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GB/T 40032-2021 PDF in English


GB/T 40032-2021 (GB/T40032-2021, GBT 40032-2021, GBT40032-2021)
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GB/T 40032-2021: PDF in English (GBT 40032-2021)

GB/T 40032-2021
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.020
CCS T 40
Safety requirements of battery swap for electric
vehicles
ISSUED ON: APRIL 30, 2021
IMPLEMENTED ON: NOVEMBER 01, 2021
Issued by: State Administration for Market Regulation;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3 
Introduction ... 4 
1 Scope ... 5 
2 Normative references ... 5 
3 Terms and definitions ... 5 
4 Safety requirements ... 7 
4.1 General requirements... 7 
4.2 Vehicle requirements ... 8 
4.3 Component requirements ... 9 
5 Test methods ... 10 
5.1 General ... 10 
5.2 Appearance, structure and function inspection ... 10 
5.3 Vehicle test ... 11 
5.4 Component test ... 12 
6 Inspection rules ... 13 
Annex A (normative) Test record sheet of vehicle ... 15 
Bibliography ... 18 
Safety requirements of battery swap for electric
vehicles
1 Scope
This Standard specifies the specific safety requirements, test methods and
inspection rules for battery swappable electric vehicles (or "vehicles" for short).
This Standard applies to M1 pure electric vehicles that can be battery swapped.
2 Normative references
The following referenced documents are indispensable for the application of
this document. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any
amendments) applies.
GB 18384-2020, Electric vehicles safety requirements
GB/T 19596, Terminology of electric vehicles
GB/T 28382-2012, Battery electric passenger cars - Specifications
GB/T 30038, Road Vehicles - Degrees of Protection (IP-Code) - Protection
of Electrical Equipment Against Foreign Objects, Water and Access
GB/T 37133-2018, Technical specifications of high duty cables and
connectors for electric vehicles
GB 38031-2020, Electric vehicles traction battery safety requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions defined in GB/T
19596 as well as the followings apply.
3.1 battery swap
a process of realizing the electric energy supplement of electric vehicles
through special devices or manual assistance to quickly replace the power
battery
4.1.2.2 The battery swap mechanism and the battery swap connector shall be
firmly connected. There shall be a structure or design to prevent incorrect
coupling.
4.1.2.3 The battery swap mechanism shall have both the automatic unlocking
function and manual unlocking function of the dedicated device. Two or more
steps shall be used to unlock. The process shall be continuous and reliable.
Avoid maloperation.
NOTE: The operation of screwing the thread with a tool is regarded as a multi-step
unlocking.
4.1.2.4 The electrical interface shall have the correct electrical connection and
disconnection sequence. Avoid unexpected high and low voltage circuit
conduction during battery swap.
4.1.2.5 When the coolant in the cooling interface (if any) leaks accidentally, it
shall not cause electrical interface insulation failure or other safety hazards. The
cleanliness of the cooling interface and cooling system shall meet the design
requirements of the vehicle manufacturer.
4.2 Vehicle requirements
4.2.1 Battery swap operation
4.2.1.1 Electric vehicles shall be tested for battery swap operation in
accordance with 5.3.2. See Table 1 for the number of battery swap operations.
Table 1 -- Number of battery swaps
4.2.1.2 During the test, electric vehicles and battery packs shall not have
failures that cannot be swappable.
4.2.1.3 During the test, the battery pack shall not show any structural damage
such as deformation, cracking that would cause the failure of battery swap.
4.2.1.4 During the test, the battery swap mechanism shall not be damaged,
such as being corroded, deformed, cracked, loosened, fell off, which may cause
the failure of the swap.
4.2.1.5 During the test, there shall be no failures such as connection failure at
the battery swap connector.
4.3.1.5 During and after the test, the battery swap mechanism shall not be
damaged, such as being deformed, cracked, loosened, fell off.
4.3.1.6 During and after the test, there shall be no connection failures in the
electrical interface. The cooling interface shall not have sealing failure.
4.3.2 Battery swap connector
4.3.2.1 The battery swap connector shall be tested in accordance with
5.4.2~5.4.5.
4.3.2.2 Test according to 5.4.2. There shall be no dielectric breakdown or arc
phenomenon in the electrical interface.
4.3.2.3 Test according to 5.4.3. The insulation resistance between the
conductors, between the conductor and the shell, between the conductor and
the shielding layer of the electrical interface shall not be less than 100MΩ.
4.3.2.4 Test according to 5.4.4. The degree of protection of the electrical
interface shall meet the requirements of IPX7 and IPX9K.
4.3.2.5 Test according to 5.4.5. The temperature rise of the electrical interface
without temperature monitoring shall not be greater than 50K. The electrical
interface with temperature monitoring shall meet the requirements of the vehicle
manufacturer.
5 Test methods
5.1 General
5.1.1 Unless otherwise required, component tests shall be carried out under the
following environmental conditions:
a) Ambient temperature: 23°C±5°C;
b) Relative humidity: 15%~90%;
c) Atmospheric pressure: 86kPa~106kPa.
5.1.2 All measuring instruments and equipment shall have sufficient accuracy.
The accuracy shall be at least one order of magnitude higher than the accuracy
of the measured index or the error shall be less than one-third of the allowable
error of the measured parameter.
5.2 Appearance, structure and function inspection
Check the appearance, structure and function by observation or manual
operation.
5.3 Vehicle test
5.3.1 Test plan
5.3.1.1 The vehicle test includes battery swap operation test, road driving test
and waterproof test.
5.3.1.2 One vehicle and one battery pack shall be provided for all vehicle test
items. It can also be equipped with multiple vehicles and multiple battery packs
to assist in the test.
5.3.1.3 During the whole vehicle test, the consumable parts can be maintained
or replaced in accordance with the regulations of the vehicle manufacturer.
5.3.2 Battery swap operation test
5.3.2.1 It shall use the battery swap equipment that is in accordance with the
vehicle design objectives to carry out the battery swap operation test.
5.3.2.2 The battery swap operation test shall be evenly distributed within the
vehicle road test mileage. Multiple tests can be concentrated in one test cycle
of battery swap operation. The number of battery swap operations performed
in a test cycle shall not be greater than one-tenth of the number specified in
4.2.1.1.
5.3.2.3 Perform appearance, structure and function inspections after the battery
swap operation test.
5.3.3 Road driving test
5.3.3.1 The road driving test shall be carried out in accordance with the
requirements of 4.9.1 in GB/T 28382-2012.
5.3.3.2 Perform appearance, structure and function inspections after road
driving test.
5.3.4 Waterproof test of vehicle
5.3.4.1 The waterproof test of the vehicle shall be carried out after the whole
vehicle battery swap operation and road driving test are all finished. Carry out
the test according to the vehicle waterproof test method specified in 6.3 of GB
18384-2020.
5.3.4.2 After the simulated cleaning test, the vehicle is placed still for 24h.
Check whether the vehicle has an insulation alarm.
......
 
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.