GB/T 33341-2025 PDF English
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| GB/T 33341-2025 | English | 380 |
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The swapping battery pack rack of electric vehicle
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| GB/T 33341-2016 | English | 90 |
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General Requirements for Swapping Battery Pack Rack of Electric Vehicle
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GB/T 33341-2025: The swapping battery pack rack of electric vehicle---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/GBT33341-2025
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 29.200
CCS K 81
Replacing GB/T 33341-2016
The Swapping Battery Pack Rack of Electric Vehicle
Issued on: AUGUST 1, 2025
Implemented on: FEBRUARY 1, 2026
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 4
1 Scope... 6
2 Normative References... 6
3 Terms and Definitions... 7
4 Use Conditions... 7
5 General Requirements... 8
5.1 General requirements... 8
5.2 Connectors for battery pack rack... 8
5.3 Wiring harness... 8
5.4 Grounding... 9
5.5 Clearances and creepage distances... 9
5.6 Insulation resistance... 9
5.7 Dielectric strength... 9
6 Interchangeability Requirements... 9
7 Structure Type... 9
8 Mechanical Requirements... 10
8.1 Mechanical requirements for battery pack rack for commercial vehicle... 10
8.2 Mechanical requirements battery pack rack for passenger car... 11
9 Test Methods... 11
9.1 Test conditions... 11
9.2 General test... 11
9.3 Battery pack rack connector test... 12
9.4 Wiring harness test... 12
9.5 Grounding test... 12
9.6 Clearance and creepage distance tests... 12
9.7 Insulation resistance test... 12
9.8 Dielectric strength test... 12
9.9 Interchangeability test... 12
9.10 Structure type test... 12
9.11 Mechanical impact test... 13
10 Inspection Rules... 13
10.1 Product test classification... 13
The Swapping Battery Pack Rack of Electric Vehicle
1 Scope
This Document specifies the operating conditions, general requirements, interchangeability
requirements, structure types, mechanical requirements, inspection rules, and marking,
packaging, transportation, and storage requirements for battery pack racks used in electric
vehicle battery swap stations. It also describes the corresponding test methods.
This Document applies to the design, production, testing, and use of battery pack racks used in
battery swap stations for M1, N2, and N3 electric vehicles with rear-mounted battery swapping.
NOTE. For electric vehicle classifications, refer to GB/T 15089-2001.
2 Normative References
The provisions in following documents become the essential provisions of this Document
through reference in this Document. For the dated documents, only the versions with the dates
indicated are applicable to this Document; for the undated documents, only the latest version
(including all the amendments) is applicable to this Document.
GB/T 1231 High strength bolts with large hexagon head assemblies for steel structures
GB/T 1804-2000 General tolerances - Tolerances for linear and angular dimensions
without individual tolerance indications
GB/T 13306-2011 Plate
GB/T 16935.1-2023 Insulation coordination for equipment within low-voltage supply
systems - Part 1.Principles, requirements and tests
GB/T 18487.1-2023 Electric vehicle conductive charging system - Part 1.General
requirements
GB/T 19596-2017 Terminology of electric vehicles
GB/T 19666-2019 General rules for flame retardant and fire resistant electric wires and
cables or optical fiber cables
GB/T 19804-2005 Welding - General tolerances for welded constructions - Dimensions
for lengths and angles - Shape and position
GB/T 29317-2021 Terminology of electric vehicle charging/battery swap infrastructure
GB/T 32879-2025 Swappable battery pack connector of electric vehicle
GB 38031-2025 Electric vehicles traction battery safety requirements
QC/T 29106-2014 Technical Specification of Automobile Wire Harness
3 Terms and Definitions
For the purposes of this Document, the terms and definitions given in GB/T 19596-2017, GB/T
29317-2021 and the following apply.
3.1 Swappable battery systems; SBS
A device that consists of several cells or power battery modules, a pack, a battery information
collection unit, and related electrical and mechanical accessories, etc.
NOTE. Referred to as a battery pack.
[SOURCE. GB/T 29317-2021, 8.1.1]
3.2 Battery pack rack
A mechanical device that is used to carry a swapping battery pack.
NOTE. This typically includes a swapping battery pack connector, guides, and other positioning
mechanisms. It provides charging, storage, and monitoring functions.
4 Use Conditions
The use conditions of battery pack rack shall comply with the following conditions.
a) Ambient temperature. -20°C ~ + 65°C.
b) Relative humidity. Daily average maximum 95%, monthly average maximum 90%, with
no condensation on the surface.
c) Altitude. Not exceeding 2,000 m. For above 2,000 m, clearances and creepage distances
shall meet the requirements of GB/T 16935.1-2023.
d) The environment shall be free of explosive media, gases that corrode metals or damage
insulation, and conductive media.
5 General Requirements
5.1 General requirements
5.1.1 The battery pack rack shall have battery pack position limiting and guiding functions.
5.1.2 The battery pack rack shall be able to automatically and accurately connect to the battery
pack and prevent incorrect insertion.
5.1.3 The battery pack rack shall have electrical and communication connection functions with
the battery pack charger.
5.1.4 The battery pack rack shall have the function of detecting the battery pack's position and
storage status and may have a temperature detection function.
5.1.5 The battery pack rack should have drainage functions to prevent water from accumulating
inside the battery pack rack or flowing into electrical equipment.
5.1.6 The battery pack rack may be equipped with an automatic dust cover that automatically
closes when no battery box is present.
5.1.7 The battery pack rack should have the load capacity to safely transfer and transport the
battery pack.
5.2 Connectors for battery pack rack
The battery pack rack shall have electric connectors and may have liquid connectors. The
structure and performance shall comply with the provisions of Clause 7 of GB/T 32879-2025.
5.3 Wiring harness
5.3.1 The low-voltage wiring harness for the battery pack rack shall comply with the provisions
of Clause 4 in QC/T 29106-2014.
5.3.2 The power cables for the battery pack rack shall be able to withstand the dielectric strength
test in 9.8; and no insulation breakdown or flashover shall occur during the test.
5.3.3 The flame retardancy and fire resistance of the cables for the battery pack rack shall
comply with the provisions of GB/T 19666-2019 and shall be heat-resistant, waterproof,
corrosion-resistant, and anti-oxidation.
5.3.4 Power cables and low-voltage wiring harnesses shall be bundled and isolated separately,
and routed smoothly.
5.3.5 Signal cables shall be shielded and twisted in pairs to prevent interference.
5.4 Grounding
5.4.1 The battery pack rack’s frame, electrical components, and connector metal casings shall
be effectively grounded, with a connection impedance of no greater than 0.1 Ω.
5.4.2 The battery pack rack’s metal frame shall be equipped with grounding bolts with a
diameter of no less than 8 mm and marked with a grounding mark.
6 Interchangeability Requirements
6.1 Battery pack racks of the same type shall be interchangeable.
6.2 The interface signal definitions of electric connectors shall be consistent.
6.3 The cooling medium of the liquid connector shall consist of 50% ethylene glycol and 50%
water, and other specifications shall be consistent.
6.4 The load-bearing surface of battery pack rack for commercial vehicle s shall be flat.
7 Structure Type
7.1 The surface of the battery pack rack must be free of obvious burrs, flash, or similar sharp
edges. Components shall be complete and clearly labeled.
7.2 Mechanical interfaces of the battery pack rack, where dimensional deviations are not
indicated, shall comply with tolerance Grade-m in GB/T 1804-2000 for metal cutting or general
stamping dimension. Welded structural dimensions shall comply with the provisions of
tolerance Grade-A in Tables 1 and 2 of GB/T 19804-2005.
7.3 Battery pack racks for commercial vehicle using connectors specified in Appendix A of
GB/T 32879-2025 shall meet the following requirements.
a) They shall be equipped with four electric connectors;
b) The layout and dimensions of the electric connectors, limiters, and guides shall comply
with the provisions of Appendix A.
NOTE. Limiters and guides include both coarse and fine guides.
c) After coarse guide positioning is completed, the fine guide shall be within the positioning
range. After fine guide positioning is completed, the guide positioning device of the
electric connector shall be within the positioning range.
8 Mechanical Requirements
8.1 Mechanical requirements for battery pack rack for commercial vehicle
8.1.1 After the battery pack rack and battery pack are coupled completely, the matching
clearance between the guide mechanism and the battery pack shall be no greater than 5 mm.
8.1.2 The vertical height of the guide mechanism of the battery pack rack shall match the battery
pack.
8.1.3 After undergoing the mechanical impact test in accordance with 9.11.1, the battery pack
rack shall meet the following requirements.
a) The battery pack rack shall show no visible cracks;
b) The connector shall show no visible cracks, no apparent looseness during installation,
and no visible deformation of the connector terminals;
c) The insulation resistance shall meet the requirements of 5.6.
8.2 Mechanical requirements battery pack rack for passenger car
8.2.1 After the battery pack rack and battery pack for passenger car are coupled completely, the
matching clearance between the guide mechanism and the battery pack shall be no greater than
5 mm.
8.2.2 When high-strength bolts are used to connect load-bearing components, the high-strength
bolts, nuts, and washers shall comply with the provisions of GB/T 1231.
9 Test Methods
9.1 Test conditions
9.1.1 Unless otherwise specified, specimens shall be tested at an ambient temperature of
(25±5)°C and a relative humidity of 5% ~ 95%.
9.1.2 The accuracy of all test instruments and equipment shall be at least one magnitude higher
than the accuracy of the parameter being measured, or the error shall be less than 1/3 of the
allowable error of the parameter being measured.
9.2 General test
Visually inspect whether the battery pack rack has position limiting and guiding devices,
whether has anti-incorrect insertion devices for connection to the battery pack; whether has
electrical connections and communication junction interfaces with the battery pack charger;
whether has battery pack status monitoring devices; whether has temperature detection devices,
drainage devices, and dust covers; and whether is capable of safely supporting the battery pack.
9.3 Battery pack rack connector test
Battery pack rack connector tests shall be conducted in accordance with the provisions of
Clause 8 of GB/T 32879-2025.
9.4 Wiring harness test
9.4.1 Low-voltage wiring harness test shall be conducted in accordance with the provisions of
Clause 5 in QC/T 29106-2014.
9.4.2 Flame retardancy and fire resistance tests for battery pack rack cables shall be conducted
in accordance with the provisions of GB/T 19666-2019.
9.5 Grounding test
Perform the grounding test in the following steps.
a) Use a gauge or vernier caliper to measure the diameter of the grounding bolt and check
the grounding mark.
b) Use an electric bridge, ground resistance tester, or digital low-resistance tester to measure
the resistance between any conductive part within the battery pack rack and the main
grounding point. The number of measurement points shall be at least 3 (including the
furthest point).
9.6 Clearance and creepage distance tests
Clearance and creepage distance tests shall be conducted in accordance with the provisions of
6.8 in GB/T 16935.1-2023.
9.7 Insulation resistance test
It shall be conducted in accordance with the provisions of 12.2 in GB/T 18487.1-2023.
9.8 Dielectric strength test
It shall be conducted in accordance with the provisions of 12.3 in GB/T 18487.1-2023.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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