QC/T 1201.1-2023 PDF English
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| QC/T 1201.1-2023 | English | 600 |
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QC/T 1201.1-2023: Interchangeability of On Board Power Exchange System for electric commercial 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/QCT1201.1-2023
QC
AUTOMOBILE INDUSTRY STANDARD
ICS 43.020
CCS T 40
Compatibility of on-board battery swap system for battery
electric commercial vehicles - Part 1.Battery swap coupler
Issued on: DECEMBER 20, 2023
Implemented on: DECEMBER 20, 2023
Issued by. Ministry of Industry and Information Technology of the PRC
Compatibility of on-board battery swap system for battery
electric commercial vehicles - Part 1.Battery swap coupler
1 Scope
This document specifies the basic requirements, signal definitions, contact coupling
sequence, connection interface, terminal arrangement, size parameters of the electrical
interface of the on-board battery swapping system for pure electric commercial vehicles
with back-type battery swapping.
This document is applicable to N2 and N3 pure electric vehicles with overall battery
swapping of back-type battery systems. Other forms of battery swapping vehicles can
make reference to it.
2 Normative references
The contents of the following documents constitute essential clauses of this document
through normative references in the text. Among them, for dated references, only the
version corresponding to that date applies to this document; for undated references, the
latest version (including all amendments) applies to this document.
GB/T 19596 Terminology of electric vehicles
GB/T 37133-2018 Technical specifications of high duty cables and connectors for
electric vehicles
GB/T 40032-2021 Safety requirements of battery swap for electric vehicles
3 Terms and definitions
The terms and definitions defined in GB/T 19596, as well as the following terms and
definitions, apply to this document.
3.1
Battery swap
The process of quickly replacing the power battery system to replenish the power of
an electric vehicle through special devices or manual assistance.
Note. The time required for a complete battery swap process generally does not exceed 5
charging CAN and power CAN; the diagnostic CAN can be expanded according to
needs.
4.8 The battery swap electrical interface shall have a connection status feedback signal
and a power terminal temperature detection signal.
4.9 The battery swap electrical interface shall have a guide structure, to ensure that it
can be connected accurately and reliably.
4.10 The battery swap locking mechanism shall have a locking status feedback signal.
The locking mechanism shall have at least two status feedbacks, namely, the locking
state and the loose state, meanwhile the low level is the loose state. If there are multiple
locking mechanisms in the battery swap mechanism, their locking states shall be
detected separately, to ensure the safety of the battery swap vehicle.
4.11 The battery swap controller is responsible for detecting the state of the locking
mechanism and feedback on the power CAN bus, so that the vehicle controller or the
battery swap station control system can read the state.
4.12 The battery swap electrical interface should reserve 1 high-voltage power supply,
for power distribution of the battery cooling unit.
4.13 The low-voltage signals in the battery swap electrical interface should reserve
activation signals for the water cooling unit.
4.14 The low-voltage signals in the battery swap electrical interface shall reserve
expandable pins, to facilitate their compatibility and scalability.
4.15 The performance of the battery swapping electrical connector shall meet the
requirements of Chapters 5 ~ 7 of GB/T 37133-2018.
4.16 The battery swapping electrical connector shall have a floating mechanism and be
installed at the vehicle end.
4.17 The floating amount of the battery swapping electrical connector’s floating
mechanism shall not be less than ±8 mm in the X and Y directions; it shall not be less
than ±5 mm in the Z direction.
4.18 The tilting and guiding capacity of the battery swapping electrical connector’s
floating mechanism shall not be less than 3°.
5 Definition of the electrical interface of the battery
swapping system
5.1 Definition of electrical interface signals
5.1.1 General requirements
5.1.1.1 The battery swapping electrical connection shall be able to meet the interactive
signals of the driving electrical connection and the charging electrical connection. The
physical connection can adopt a single battery swapping connector (same port for
charging and discharging) or a dual battery swapping connector (different ports for
charging and discharging).
5.1.1.2 For the battery swapping system with a single battery swapping connector, all
low-voltage signals for driving discharge and charging shall be distributed on the two
groups of low-voltage terminals A and B respectively; they shall be relatively
independent.
5.1.1.3 For the battery swapping system with a dual battery swapping connector, all
high-voltage power signals and low-voltage signals for driving discharge shall be
arranged in one connector; all high-voltage power signals and low-voltage signals for
vehicle charging/in-station charging shall be arranged in another connector.
5.1.1.4 Regardless of the battery swapping system with a single battery swapping
connector or a dual battery swapping connector, all low-voltage signals related to
driving discharge shall be arranged on the A group terminals of the battery swapping
connector, all low-voltage signals related to charging shall be arranged on the B group
terminals of the battery swapping connector.
5.1.2 Definition of single battery swap connector signal
The battery swap system of the single battery swap connector adopts the same charging
and discharging port; shares the high-voltage power terminal. Measures shall be taken
in the battery swap battery system, to enable it to have the ability to cut off the circuit
in both directions with load, to meet the safety of the battery swap system.
The layout position of the battery swap connector in the vehicle with a single battery
swap connector shall meet the requirements of QC/T 1201.3.The electrical signal and
terminal arrangement of the battery swap connector shall meet the requirements of
Table 1.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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