CN110417076A - Low-power consumption module and BMS for industry repacking vehicle - Google Patents
Low-power consumption module and BMS for industry repacking vehicle Download PDFInfo
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- CN110417076A CN110417076A CN201910537431.4A CN201910537431A CN110417076A CN 110417076 A CN110417076 A CN 110417076A CN 201910537431 A CN201910537431 A CN 201910537431A CN 110417076 A CN110417076 A CN 110417076A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
- B60L58/15—Preventing overcharging
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
- H02J7/0032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits disconnection of loads if battery is not under charge, e.g. in vehicle if engine is not running
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Transportation (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Embodiment of the present invention provides a kind of low-power consumption module and BMS for industry repacking vehicle, belongs to battery management system technical field.The vehicle includes BMS, battery pack, controllable switch and DC/DC converter, the input terminal of the low-power consumption module is connect with the BMS, first output end of the low-power consumption module is connect by the controllable switch with the first end of the DC/DC converter, the second output terminal of the low-power consumption module is connect with the second end of the DC/DC converter, the third output end of the low-power consumption module is connect with the third end of the DC/DC converter, and the 4th end of the DC/DC converter is connect with the BMS；The BMS controls the DC/DC converter is connected in the low-power consumption module first end and third end in the case where detecting that the battery pack is in idle state for a long time；The DC/DC converter stops working in the case where the first end of the DC/DC converter and third end are connected so that the 4th end of the DC/DC converter exports low level.
Description
Technical field
The present invention relates to battery management system technical fields, more particularly to a kind of low-power consumption for industry repacking vehicle
Module and BMS.
Background technique
It reaches its maturity in face of increasingly serious Energy situation and environmental protection pressure and new-energy automobile development, lithium power technology
Etc. external conditions bring opportunity, lithium electricity fork truck welcoming best Market Timing.The fork truck compared with traditional lead-acid battery
On it is more obvious using the advantage of lithium electricity, first is that due to small in size, be easy arrangement, by adjusting balance weight, make vehicle center of gravity
It is lower, it is also more energy saving；Second is that due to lithium battery be it is non-maintaining, without design on the car body cleaning acid solution sewer,
Stick on anti-acid etching materials without the interior survey to battery lodge；Third is that making full use of lithium battery that can reduce storage with fast charge advantage
The selection capacity of battery, to effectively reduce the relative cost of manufacture fork truck.
Under these advantages, the demand that plumbic acid vehicle changes lithium electric car type in the market gradually increases.But it is limited to plumbic acid vehicle
Type does not consider the communication issue of vehicle and battery system when designing early period, therefore during being adapted into lithium electric car type
The integration problem of lithium battery management system can be encountered, it may be assumed that the power supply and control problem of battery management system.Present mainstream
Refiting scheme still using lithium battery PACK as an individual workpiece (lead-acid accumulator before being equivalent to repacking), PACK
In the DC/DC converter that is carried by PACK of battery management system be powered.This is just increased to the opening process of vehicle again
It switchs together, live staff generally can be because of cumbersome power-on operation step and by the DC/DC converter one in PACK
Direct-open, when fork truck is in idle situation for a long time, battery lithium battery group may be because of included DC/DC converter
The case where working always and causing electricity decline or even over-discharge occur and damage battery.
Summary of the invention
The purpose of embodiment of the present invention is to provide a kind of low-power consumption module and BMS for industry repacking vehicle
(Battery Management System, battery management system).The low-power consumption module and BMS can reduce industrial refitted car
Power consumption.
To achieve the goals above, embodiment of the present invention provides a kind of low-power consumption module for industry repacking vehicle,
The vehicle includes BMS, battery pack, controllable switch and DC/DC converter, the input terminal and the BMS of the low-power consumption module
Connection, the first output end of the low-power consumption module are connect by the controllable switch with the first end of the DC/DC converter,
The second output terminal of the low-power consumption module is connect with the second end of the DC/DC converter, the third of the low-power consumption module
Output end is connect with the third end of the DC/DC converter, and the 4th end of the DC/DC converter is connect with the BMS；
The BMS controls the low-power consumption mould in the case where detecting that the battery pack is in idle state for a long time
First end and the third end of the DC/DC converter is connected in block；
The DC/DC converter stops working in the case where the first end of the DC/DC converter and third end are connected
So that the 4th end of the DC/DC converter exports low level.
Optionally, the low-power consumption module is in the case where the controllable switch is converted to off-state by closed state,
Disconnect first end and the third end of the DC/DC converter；
The low-power consumption module is in the case where the controllable switch is converted to closed state by off-state, described in conducting
The first end and second end of DC/DC converter, first end and second end of the DC/DC converter in the DC/DC converter
In the case where conducting, start to work so that the 4th end of the DC/DC converter exports high level.
Optionally, the low-power consumption module includes:
First resistor, one end of the first resistor is for external+12V DC electricity；
Silicon-controlled, the silicon-controlled first input end is connect with the other end of the first resistor；
First capacitor, one end of the first capacitor are connect with the silicon-controlled first input end, the first capacitor
The other end connect with the second silicon-controlled input terminal；
First triode, the collector of first triode are connect with the second silicon-controlled input terminal, and described
The base stage of one triode is connect with the BMS, the emitter ground connection of first triode.
Optionally, the BMS is controlled described low in the case where detecting that the battery pack is in idle state for a long time
The first end of the DC/DC converter is connected in power consumption module and third end specifically includes:
The BMS exports high level signal to first triode.
Optionally, the low-power consumption module further comprises:
Second resistance, one end of the second resistance are connect with the first silicon-controlled output end, the second resistance
The other end connect with the first output end of the low-power consumption module；
Optocoupler, the first input end of the optocoupler are connect with the first silicon-controlled output end, and the first of the optocoupler
Output end is connect with the first output end of the low-power consumption module, the second output terminal of the optocoupler and the low-power consumption module
Second output terminal connection；
3rd resistor, one end of the 3rd resistor are connect with the second input terminal of the optocoupler, the 3rd resistor
The other end is connect with the silicon-controlled second output terminal, the other end of the 3rd resistor also with the low-power consumption module
The connection of three output ends.
Optionally, the low-power consumption module further comprises: diode, anode and the 3rd resistor of the diode
Other end connection, the cathode of the diode connect with the third output end of the low-power consumption module.
It on the other hand, include as any of the above-described the present invention also provides a kind of BMS for industry repacking vehicle, the BMS
The low-power consumption module.
Through the above technical solutions, provided by the present invention for industry repacking vehicle low-power consumption module and BMS by
When detecting that battery pack is in idle state for a long time, closes DC/DC converter and keeps the state of a control of DC/DC converter,
So as to avoid in stock idle, DC/DC converter work always caused by battery capacity decline, cell damage the problems such as
Generation, while also reducing the energy consumption of vehicle.
The other feature and advantage of embodiment of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is to further understand for providing to embodiment of the present invention, and constitute part of specification, with
Following specific embodiment is used to explain the present invention embodiment together, but does not constitute the limit to embodiment of the present invention
System.In the accompanying drawings:
Fig. 1 is the connection relationship of the low-power consumption module for reequiping industrial vehicle according to embodiment of the present invention
Figure；
Fig. 2 is the circuit diagram of the low-power consumption module for reequiping industrial vehicle according to embodiment of the present invention.
Specific embodiment
It is described in detail below in conjunction with specific embodiment of the attached drawing to embodiment of the present invention.It should be understood that
Embodiment that the specific embodiments described herein are merely illustrative of the invention is not intended to restrict the invention implementation
Mode.
In embodiments of the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, top, bottom "
Usually for direction shown in the drawings either for it is vertical, vertically or on gravity direction for each component it is mutual
Positional relationship describes word.
In addition, if relating to the description of " first ", " second " etc. in embodiment of the present invention, it should " first ", " second "
Deng description be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated
The quantity of technical characteristic." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one and be somebody's turn to do
Feature.It in addition, the technical solution between each embodiment can be combined with each other, but must be with ordinary skill people
Based on member can be realized, this technical solution will be understood that when the combination of technical solution appearance is conflicting or cannot achieve
Combination be not present, also not the present invention claims protection scope within.
It is the company of the low-power consumption module for industry repacking vehicle according to embodiment of the present invention as shown in Figure 1
Connect relational graph.In Fig. 1, which may include BMS10, battery pack BT, controllable switch K and DC/DC converter 20.DC/DC
Converter 20 can be used for the supply voltage of conversion battery group BT to be powered to BMS20.The input of the low-power consumption module 30
End is connect with BMS10, and the first output end of low-power consumption module 30 is connected by the first end of controllable switch K and DC/DC converter 20
It connects, the second output terminal of low-power consumption module 30 is connect with the second end of DC/DC converter 20, the third output of low-power consumption module 30
End is connect with the third end of DC/DC converter 20, and the 4th end of DC/DC converter 20 is connect with BMS10.
In the case where detecting that battery pack BT is in idle state for a long time, control low-power consumption module 30 is connected BMS10
The first end of DC/DC converter 20 and third end；
DC/DC converter 20 in the case where the first end of DC/DC converter 20 and third end are connected, stop working so that
The 4th end for obtaining DC/DC converter 20 exports low level, thus in the case where not having to that controllable switch K is turned off manually, so that should
DC/DC converter 20 stops powering to BMS10.
When needing to restart the DC/DC converter 20, (disconnection recloses) controllable switch K, low-power consumption can be reset manually
Module 30 in the case where controllable switch K is converted to off-state by closed state, disconnect DC/DC converter 20 first end and
Third end.
Low-power consumption module 30 is in the case where controllable switch K is converted to closed state by off-state, conducting DC/DC transformation
The first end and second end of device 20, the DC/DC converter is the case where the first end and second end of DC/DC converter 20 is connected
Under, it starts to work so that the 4th end of DC/DC converter 20 exports high level, so that the DC/DC converter 20 is again
It powers to BMS10.
In this embodiment, it for the specific structure of the low-power consumption module 30, can be for example shown in Fig. 2.In Fig. 2
In, which may include first resistor R1, silicon-controlled RL, first capacitor C1 and the first triode Q1.
One end of first resistor R1 can be used for external+12V DC electricity；The first input end of silicon-controlled RL can be with first
The other end of resistance R1 connects；One end of first capacitor C1 can be connect with the first input end of silicon-controlled RL, first capacitor C1
The other end can be connect with the second input terminal of silicon-controlled RL；The collector of first triode Q1 can be with the of silicon-controlled RL
The connection of two input terminals, the base stage of the first triode Q1 can be connect with BMS10, the emitter ground connection of the first triode Q1.
Further, which may further include second resistance R2, optocoupler IC1 and 3rd resistor R3.
One end of second resistance R2 can be connect with the first output end of silicon-controlled RL, and the other end of second resistance R2 can be with low-power consumption
First output end of module 30 connects；The first input end of optocoupler IC1 can be connect with the first output end of silicon-controlled RL, optocoupler
The first output end of IC1 can be connect with the first output end of low-power consumption module 30, the second output terminal of optocoupler IC1 can with it is low
The second output terminal of power consumption module 30 connects；One end of 3rd resistor R3 is connect with the second input terminal of optocoupler IC1,3rd resistor
The other end of R3 is connect with the second output terminal of silicon-controlled RL, and the other end of 3rd resistor R3 can also be with low-power consumption module 30
The connection of third output end.
Further, which may further include diode D1.The anode of diode D1 can be with
It is connect with the other end of 3rd resistor R3, the cathode of diode D1 can be connect with the third output end of low-power consumption module 30.
Based on the circuit structure of low-power consumption module 30 as illustrated in FIG. 2, in this embodiment, " BMS10 is being detected
In the case that battery pack BT is in idle state for a long time, the first end of DC/DC converter 20 is connected in control low-power consumption module 30
With third end " operation then can for BMS10 to the first triode Q1 export high level signal.In the BMS10 to the one or three pole
Pipe Q1 export high level in the case where, the first triode Q1 conducting so that silicon-controlled RL input terminal (first input end and
Second input terminal) conducting；Due to the device property of silicon-controlled RL, in the case where input terminal is switched on, output end can be also connected,
So that node U1 is low level (voltage value not necessarily 0), at this point, the first output end of optocoupler IC1 and second output terminal are disconnected
It opens, so that the first end and second end of DC/DC converter 20 disconnects；The first end and second end of the DC/DC converter 20
When disconnection, the 4th end of DC/DC converter 20 exports low level, to stop powering to BMS10.
BMS10 exports low level in the case where being stopped power supply, to the first triode Q1, but due to silicon-controlled RL's
Device property, in output in the state of switched on, even if input terminal is disconnected, output end still can be held on shape
State, unless the voltage of output end is lower than conducting voltage (the generally 0.5V to 1.5V) of silicon-controlled RL.
When needing to restart BMS10, controllable switch K can be disconnected, so that the voltage (section of the output end of silicon-controlled RL
Point U1) it is lower than conducting voltage, to disconnect the output end；After output end disconnection, controllable switch K is reclosed, so that section
The voltage of point U1 is high level, so that optocoupler IC1 be connected；In the case where optocoupler IC1 is in the conductive state, DC/DC transformation
The first end and second end of device 20 is connected, to export high level to BMS10 to realize the operation powered to the BMS10.
On the other hand, the present invention also provides a kind of BMS for industry repacking vehicle, which may include such as above-mentioned
One low-power consumption module 30.
Through the above technical solutions, provided by the present invention for industry repacking vehicle low-power consumption module and BMS by
When detecting that battery pack is in idle state for a long time, closes DC/DC converter and keeps the state of a control of DC/DC converter,
So as to avoid in stock idle, DC/DC converter work always caused by battery capacity decline, cell damage the problems such as
Generation, while also reducing the energy consumption of vehicle.
The optional embodiment of example of the present invention is described in detail in conjunction with attached drawing above, still, embodiment of the present invention is not
The detail being limited in above embodiment can be to of the invention real in the range of the technology design of embodiment of the present invention
The technical solution for applying mode carries out a variety of simple variants, these simple variants belong to the protection scope of embodiment of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, embodiment of the present invention
To various combinations of possible ways, no further explanation will be given.
It will be appreciated by those skilled in the art that realizing that all or part of the steps in above embodiment method is can to lead to
Program is crossed to instruct relevant hardware and complete, which is stored in a storage medium, including some instructions use so that
One (can be single-chip microcontroller, chip etc.) or processor (processor) execute each embodiment the method for the application
All or part of the steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic or disk etc. are various can store journey
The medium of sequence code.
In addition, any combination can also be carried out between a variety of different embodiments of embodiment of the present invention, as long as its
Without prejudice to the thought of embodiment of the present invention, embodiment of the present invention disclosure of that equally should be considered as.
Claims (7)
1. a kind of low-power consumption module for industry repacking vehicle, the vehicle includes BMS, battery pack, controllable switch and DC/DC
Converter, which is characterized in that the input terminal of the low-power consumption module is connect with the BMS, and the first of the low-power consumption module is defeated
Outlet is connect by the controllable switch with the first end of the DC/DC converter, the second output terminal of the low-power consumption module
It is connect with the second end of the DC/DC converter, the of the third output end of the low-power consumption module and the DC/DC converter
The connection of three ends, the 4th end of the DC/DC converter is connect with the BMS；
The BMS controls the low-power consumption module and leads in the case where detecting that the battery pack is in idle state for a long time
Lead to first end and the third end of the DC/DC converter；
The DC/DC converter in the case where the first end of the DC/DC converter and third end are connected, stop working so that
The 4th end for obtaining the DC/DC converter exports low level.
2. low-power consumption module according to claim 1, which is characterized in that the low-power consumption module the controllable switch by
In the case that closed state is converted to off-state, first end and the third end of the DC/DC converter are disconnected；
The DC/ is connected in the case where the controllable switch is converted to closed state by off-state in the low-power consumption module
The first end and second end of DC converter, the DC/DC converter are connected in the first end and second end of the DC/DC converter
In the case where, it starts to work so that the 4th end of the DC/DC converter exports high level.
3. low-power consumption module according to claim 1, which is characterized in that the low-power consumption module includes:
First resistor, one end of the first resistor is for external+12V DC electricity；
Silicon-controlled, the silicon-controlled first input end is connect with the other end of the first resistor；
First capacitor, one end of the first capacitor are connect with the silicon-controlled first input end, the first capacitor it is another
One end is connect with the second silicon-controlled input terminal；
First triode, the collector of first triode are connect with the second silicon-controlled input terminal, and the described 1st
The base stage of pole pipe is connect with the BMS, the emitter ground connection of first triode.
4. low-power consumption module according to claim 3, which is characterized in that the BMS is when detecting the battery group leader
Between in the case where the idle state, control the DC/DC converter is connected in the low-power consumption module first end and third end
It specifically includes:
The BMS exports high level signal to first triode.
5. low-power consumption module according to claim 3, which is characterized in that the low-power consumption module further comprises:
Second resistance, one end of the second resistance are connect with the first silicon-controlled output end, the second resistance it is another
One end is connect with the first output end of the low-power consumption module；
Optocoupler, the first input end of the optocoupler are connect with the first silicon-controlled output end, the first output of the optocoupler
End is connect with the first output end of the low-power consumption module, and the second of the second output terminal of the optocoupler and the low-power consumption module
Output end connection；
3rd resistor, one end of the 3rd resistor are connect with the second input terminal of the optocoupler, the 3rd resistor it is another
End is connect with the silicon-controlled second output terminal, and the other end of the 3rd resistor is also defeated with the third of the low-power consumption module
Outlet connection.
6. low-power consumption module according to claim 5, which is characterized in that the low-power consumption module further comprises: two poles
The anode of pipe, the diode is connect with the other end of the 3rd resistor, the cathode of the diode and the low-power consumption mould
The third output end of block connects.
7. a kind of BMS for industry repacking vehicle, which is characterized in that the BMS includes as described in claim 1 to 6 is any
Low-power consumption module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910537431.4A CN110417076B (en) | 2019-06-20 | 2019-06-20 | Low power module for industrial retrofit vehicle and BMS |
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| CN201910537431.4A CN110417076B (en) | 2019-06-20 | 2019-06-20 | Low power module for industrial retrofit vehicle and BMS |
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| CN110417076B CN110417076B (en) | 2023-02-03 |
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