GB/T 22068-2025 PDF English
US$515.00 · In stock · Download in 9 secondsGB/T 22068-2025: Electrically driven compressor assembly for automobile air conditioning Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB/T 22068: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 22068-2025 | English | 515 |
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Electrically driven compressor assembly for automobile air conditioning
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| GB/T 22068-2018 | English | 145 |
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Electrically Driven Compressor Assembly for Automobile Air Conditioning
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| GB/T 22068-2008 | English | 639 |
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Automobile air conditioning electrically driven compressor assembly
| Obsolete |
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GB/T 22068-2025: Electrically driven compressor assembly for automobile air conditioning---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT22068-2025
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 27.200
CCS J 73
Replacing GB/T 22068-2018
Electrically driven compressor assembly for automobile air
conditioning
Issued on. JANUARY 24, 2025
Implemented on. AUGUST 01, 2025
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative references... 5
3 Terms and definitions... 6
4 Types and basic parameters... 7
5 Technical requirements... 9
6 Test methods... 20
7 Inspection rules... 35
8 Marking, packaging, transportation and storage... 37
1 Scope
This document defines the terms and definitions of electrically driven compressor
assembly for automobile air conditioning, specifies the types, basic parameters and
technical requirements, describes the corresponding test methods, and specifies the
inspection rules as well as marking, packaging, transportation and storage.
This document applies to the manufacture of electrically driven compressor assembly
in automobile thermal management systems.
2 Normative references
The following documents are referred to in the text in such a way that some or all of
their content constitutes requirements of this document. For dated references, only the
version corresponding to that date is applicable to this document; for undated references,
the latest version (including all amendments) is applicable to this document.
GB/T 191, Packaging. Pictorial marking for handling of goods
GB/T 2423.17, Environmental testing - Part 2.Test methods - Test Ka. Salt mist
GB/T 2423.34, Environmental testing - Part 2.Test methods - Test Z/AD.
Composite temperature/humidity cyclic test
GB/T 4208, Degrees of protection provided by enclosure (IP code)
GB/T 4214.1-2017, Test method for noise of household and similar electrical
appliances - General requirements
GB/T 5773, The method of performance test for positive displacement refrigerant
compressors
GB/T 9237-2017, Refrigerating systems and heat pumps - Safety and
environmental requirements
GB/T 13306, Plate
3 Terms and definitions
For the purposes of this document, the following terms and definitions, as well as those
given in JB/T 7249 and GB/T 5773, apply.
3.1 electrically driven compressor assembly
A positive displacement refrigerant compressor device – composed of a compressor
with direct current motor driven by the electric motor and a drive controller – for
automobile thermal management systems of vapor compression refrigeration cycles.
3.2 compressor with direct current motor
A fully enclosed or semi-enclosed structure consisting of a positive displacement
refrigerant compressor and an electric motor.
3.3 drive controller
A device, connected to the main power supply of the motor vehicle, consisting of an
external control signal interface circuit, a motor control circuit, a power drive circuit
and a protection circuit, which is used to control the energy transfer and conversion
between the DC power supply and the compressor motor.
3.4 exciting force
Periodic simple harmonic vibration caused by the unbalanced mass of the electric
compressor and the pulsation of the running air flow as the vibration source.
3.5 continuous liquid durability test
Durability test that simulates the compressor being able to run continuously without
suction superheat and with a certain amount of liquid refrigerant at the suction port.
3.6 initiation of the liquid shock durability test
Durability test that simulates the compressor being able to achieve a certain number of
cycle starts with a certain amount of liquid refrigerant at the suction port.
4 Types and basic parameters
4.1 Types
4.1.1 Electrically driven compressor assemblies (hereinafter referred to as
“compressors”) are classified according to the functions as follows.
4.1.2 Compressors are classified according to the structural types as follows.
4.1.3 Compressors are classified according to the sealing types as follows.
4.1.4 Compressors are classified according to the applicable vehicle models as follows.
4.1.5 Compressors are classified according to displacement range (see Table 1 for
displacement range) as follows.
4.2 Basic parameters
See Table 1 for the basic parameters of compressor.
4.3 Nominal working conditions
See Table 2 for the nominal working conditions of compressor.
5 Technical requirements
5.1 General
5.1.1 The compressor shall be manufactured in accordance with the drawings and
technical documents approved in accordance with the prescribed procedures (or the
agreement between the user and the manufacturer).
5.1.2 The requirements and tests for integral compressors are unified with those for the
compressor with direct current motor.
5.2 Appearance
The outer surface of the compressor with direct current motor and the drive controller
shall not have any appearance defects such as oil stains, rust, sharp edges, etc. The wire
sheath shall not be broken, and the connectors shall not be deformed or damaged.
5.3 Compressor refrigerating (heating) capacity, input power, refrigerating
(heating) coefficient of performance
5.3.1 The measured compressor refrigerating (heating) capacity shall not be less than
95% of the nominal refrigerating (heating) capacity.
5.3.2 The measured input power of the compressor shall not be greater than 110% of
the nominal input power.
5.3.3 The measured compressor refrigerating (heating) coefficient of performance shall
not be less than 95% of the indicated value and shall not be less than the limit value
specified in Table 3.For compressors with direct current motor without drive controller,
the refrigerating (heating) coefficient of performance shall not be less than 110% of the
limit value specified in Table 3.
5.4.1.2 Sweep frequency noise
After the test, the sweep frequency noise value of the compressor shall meet the design
requirements of the manufacturer or the requirements agreed upon by the supplier and
the buyer.
5.4.2 Pressure pulsation
5.4.3 Vibrations
5.4.3.1 Rated speed vibration acceleration
The root mean square value of the vibration acceleration at three positions of the
compressor shall meet the design requirements of the manufacturer or the requirements
agreed upon by the supplier and the purchaser.
5.5 Exciting force
Within the allowable speed range, the measured exciting force of the electric
compressor in the horizontal front and rear (X axis), horizontal left and right (Y axis),
and vertical (Z axis) directions shall not be greater than the maximum allowable
exciting force (Fmax). The maximum allowable exciting force is calculated according to
Formula (1).
5.6 Compressor with direct current motor
5.6.1 Internal cleanliness
The internal cleanliness of the compressor with direct current motor shall meet the
following requirements.
5.6.2 Internal moisture content
Within 24 hours after the compressor with direct current motor is assembled, the
internal moisture content of the compressor with direct current motor shall not be
greater than 500×10-6 when tested according to the method in 6.6.2.
5.6.3 Tightness
The total leakage of the compressor with direct current motor shall not exceed 14 g/a.
5.6.7 Cyclic damp heat performance
After the cyclic damp heat performance test, the compressor with direct current motor
with closed suction and exhaust ports shall meet the following requirements.
5.6.8 Corrosion resistance
5.6.8.1 After the corrosion resistance test of compressors for passenger cars, the
compressor with direct current motor shall meet the following requirements.
5.6.8.2 After the corrosion resistance test, the compressor for passenger cars shall meet
the design requirements of the manufacturer or the requirements agreed upon by the
supplier and the buyer.
5.6.9 Insulation resistance of motor stator winding to enclosure
The insulation resistance of the motor stator winding to the enclosure shall meet the
following requirements.
a) After the refrigeration oil inside the compressor with direct current motor is
emptied, the insulation resistance of the motor stator winding to the enclosure
shall be greater than 50 MΩ;
b) After charging the compressor with direct current motor with refrigeration oil
(filling of refrigeration oil as specified in the compressor drawing) and
refrigerant (charging the amount of refrigerant in the compressor as per the
maximum allowable charge amount), operate it for not less than 5 minutes
after the first charge of refrigerant. The insulation resistance of the motor stator
winding to the enclosure shall be greater than 10 MΩ.
5.6.10 Withstand voltage of motor stator winding to enclosure
The insulation of the motor stator winding to the enclosure shall be able to withstand
the test voltage specified in Table 9.There shall be no breakdown, flashover or arcing
of the insulation. The leakage current shall comply with the provisions of Table 9.
6 Test methods
6.1 General
The instruments used in the test and their accuracy, as well as the allowable deviations
of the test parameters, shall comply with the provisions of GB/T 5773.
6.2 Appearance
The appearance quality and markings of electric compressors shall be inspected visually.
6.3 Tests of compressor refrigerating (heating) capacity, input power, refrigerating
(heating) coefficient of performance
Under the nominal operating conditions specified in Table 2, the test shall be carried
out in accordance with the provisions of GB/T 5773 to determine the compressor
refrigerating (heating) capacity, input power and refrigerating (heating) coefficient of
performance.
6.4 Tests of noise, pressure pulsation, and vibration
6.4.1 Noise test
6.4.1.2 Sweep frequency noise test
According to the method specified in 6.4.1.1, operate the compressor at rated speed.
When the system reaches the operating conditions specified in the noise test, reduce the
compressor speed to the minimum speed, and then increase it from the minimum speed
to the maximum speed (the speed reduction and speed increase rate is 60r/s), and record
the noise data.
6.4.2 Pressure pulsation test
6.4.2.1 Rated speed pressure pulsation test
Under the test conditions specified in Table 11, arrange the pressure pulsation sensor
on the refrigerant pipeline, 200 mm~250 mm away from the compressor suction and
exhaust ports. The pipeline bending radius is R >50 mm. Ensure a straight pipe section
of 150 mm~200 mm behind the sensor (see Figure 1); read and record the compressor
suction and exhaust pressure pulsation data.
6.4.3 Vibration test
6.4.3.1 Rated speed vibration test
While conducting the rated speed noise test, place the vibration sensors at three
locations of the compressor. the suction end, the exhaust end, and the side point of the
center point (close to the center point of the compressor); read and record the
copressor vibration data.
6.6 Compressor with direct current motor
6.6.1 Internal cleanliness
6.6.1.1 Compressors for passenger cars and semi-hermetic compressors for buses shall
be tested in accordance with the method specified in GB/T 21360.
6.6.2 Internal moisture content
6.6.2.1 Compressors for passenger cars and semi-hermetic compressors for buses shall
be tested in accordance with the method specified in GB/T 21360.
6.6.2.2 The fully enclosed scroll compressor for passenger cars shall be tested according
to the method specified in 6.2.5 of GB/T 18429-2018.The fully enclosed rotor
compressor for passenger cars shall be tested according to the method specified in 6.8
of GB/T 15765-2021.
6.6.3 Tightness test
6.6.3.1 Compressors for passenger cars and semi-hermetic compressors for buses shall
be tested in accordance with the method specified in GB/T 21360.
6.6.3.2 The fully enclosed scroll compressor for passenger cars shall be tested according
to the method specified in 6.2.1 of GB/T 18429-2018.The fully enclosed rotor
compressor for passenger cars shall be tested according to the method specified in 6.7
of GB/T 15765-2021.
6.8.2 Initiation of the liquid shock durability test
The principle diagram of the test device is shown in Figure 4.Install the compressor on
the test device system, and add a proper amount of refrigerant after vacuuming and leak
detection. The compressor is subjected to an initiation of the liquid shock durability test
according to the operating conditions specified in Table 18.The test steps are as follows.
6.10 Electromagnetic compatibility
6.10.1 Electromagnetic immunity
6.10.1.1 Electromagnetic radiation immunity
According to the provisions of GB/T 17619, carry out the electromagnetic radiation
immunity test of the compressor by using the free field method, transverse
electromagnetic wave cell (TEM) or large current injection method; alternatively, carry
out the test in accordance with the method agreed by both parties after consultation with
the user.
6.10.1.2 Electrical transient conduction immunity
Carry out the compressor electrical transient conduction immunity test in accordance
with the provisions of GB/T 21437.2 and GB/T 21437.3 or in accordance with a method
agreed upon by both parties after consultation with the user.
7 Inspection rules
7.1 Factory inspection
7.1.1 Each compressor shall be inspected and qualified by the manufacturer before
leaving the factory.
7.1.2 The factory inspection items, technical requirements and test methods for
compressors shall be in accordance with the provisions of Table 20.
7.2 Sampling inspection
7.2.1 Sampling shall be carried out in accordance with the sampling method and
sampling quantity specified by the manufacturer from the electric compressors that
have passed the factory inspection.
7.2.2 The inspection items, technical requirements and test methods for sampling
inspection shall be in accordance with the provisions of Table 20.
7.2.3 If the sampling fails, double the quantity shall be re-inspected. If there is still one
unqualified unit, the batch of products shall be inspected unit by unit.
7.3 Type inspection
7.3.1 Type inspection shall be carried out in any of the following cases.
7.3.2 Type inspection items, technical requirements and test methods shall be in
accordance with the provisions of Table 20.
8 Marking, packaging, transportation and storage
8.1 Marking
8.1.1 Each compressor shall have a permanent nameplate fixed in a prominent position.
The nameplate shall comply with the provisions of GB/T 13306 and the content of the
nameplate shall at least include.
8.1.2 The product implementation standard number shall be marked in appropriate
places (such as nameplate, product manual, etc.).
8.2 Packaging
8.2.1 The compressor shall be cleaned, dried, and rust-proofed before packaging, and
then filled with dry nitrogen or corresponding refrigerant gas (except dangerous ones)
at a pressure higher than atmospheric pressure.
8.2.2 The packaging of compressors shall comply with the requirements of GB/T 191.
Special requirement of the buyer, if any, shall be determined by both parties.
8.2.3 The compressor in the packaging box shall be securely fixed and be provided with
moisture-proof and vibration-proof measures.
8.2.4 The outside of the packaging box shall at least indicate the following.
8.3 Transportation and storage
8.3.1 The compressor shall be protected from damage during normal transportation,
loading and unloading.
8.3.2 The compressor shall be stored in a dry and ventilated environment, and there
shall be no corrosive gas around it.
8.3.3 The sealing plug shall not be pulled out when the compressor is stored. If the
sealing plug falls off or becomes loose, it shall be checked and handled in time.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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