CN206450814U - A kind of test system of distribution power automation terminal battery management - Google Patents
A kind of test system of distribution power automation terminal battery management Download PDFInfo
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- CN206450814U CN206450814U CN201720058741.4U CN201720058741U CN206450814U CN 206450814 U CN206450814 U CN 206450814U CN 201720058741 U CN201720058741 U CN 201720058741U CN 206450814 U CN206450814 U CN 206450814U
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Abstract
The utility model provides a kind of test system of distribution power automation terminal battery management, BMS modules are connected with control module, BMS modules are used for by controlling first switch and second switch break-make, control lithium battery group discharge and recharge, and the charging and discharging currents and voltage of monitoring lithium battery group, and send the lithium battery group charging and discharging currents and voltage of monitoring to control module, the lithium battery group charging and discharging currents and voltage that control module is obtained, the service data information of charge-discharge machine, the service data information transfer of BMS modules is to PC, the data message that PC display is obtained, and by lithium battery group charging and discharging currents and voltage, the service data information of charge-discharge machine, service data information and the threshold value of BMS modules are compared, assess the performance of tested distribution power automation terminal.System can show detection BMS module relevant informations in real time；Simulate the state parameters, the functional status to detect BMS modules such as lithium battery voltage, electric current, temperature.
Description
Technical field
The utility model is related to distribution automation field, more particularly to a kind of survey of distribution power automation terminal battery management
Test system.
Background technology
The problem of present age of rapid economic development, global warming, scarcity of resources equal energy source and environment, annoyings us, due to
The features such as lithium battery high specific energy in itself, it is increasingly becoming one of preferred eco-friendly power source.In distribution power automation terminal, battery pack can
Powered after a loss of power for distribution power automation terminal power supply, it is ensured that the normal operation of critical component in terminal, increase its reliability.By
In many disadvantages of lead-acid battery, lithium battery gradually replaces traditional lead-acid battery group, and distribution is applied to certainly as stand-by power supply
In dynamicization terminal.Lithium battery group is in use, must be by battery management system (Battery Management System, BMS)
Management, BMS mainly carries monitoring lithium battery voltage, temperature, the parameter information such as charging and discharging currents, and realize balanced, control,
The functions such as data transfer.Externally linked up " brain " it may be said that BMS is lithium battery, its Reliability Assurance standby lithium pond group
Normal operation.But it is very different that current distribution power automation terminal matches somebody with somebody BMS, therefore before BMS networks, it is necessary to detected.Mesh
It is preceding to distribution power automation terminal with BMS detection still based on artificial, detection efficiency is relatively low.
The content of the invention
In order to overcome above-mentioned deficiency of the prior art, the purpose of this utility model is that there is provided a kind of power distribution automation
The test system of terminal battery management, including：PC, control module, BMS modules, lithium battery group, charge-discharge machine, discharge and recharge
Loop；
Lithium battery group includes：It is connected in series between multiple lithium batteries, lithium battery；
Charge-discharge machine is provided with control module connection end, and charge output end, charging input end, output end of discharging, electric discharge input
End；
BMS modules include：Discharge and recharge incoming end one, discharge and recharge incoming end two, the first diode, the second diode, first
Switch, second switch；
Charging and discharging circuit is provided with charging and discharging circuit one, charging and discharging circuit two；
Electric discharge output end and charging input end are connected to the discharge and recharge incoming end of BMS modules by charging and discharging circuit one respectively
One；Discharge and recharge incoming end one, lithium battery group positive pole, the first diode anode, first switch first end is connected simultaneously；
Charging output end and electric discharge input are connected to the discharge and recharge incoming end of BMS modules by charging and discharging circuit two respectively
Two；Discharge and recharge incoming end two, lithium battery group negative pole, the second diode anode, the end of second switch second is connected simultaneously；One or two pole
Tube cathode, the end of first switch second, the second diode cathode, second switch first end is connected simultaneously；BMS control modules connection end
It is connected with control module；
BMS modules are connected with control module, and BMS modules are used to, by controlling first switch and second switch break-make, control
Lithium battery group discharge and recharge, and the charging and discharging currents and voltage of lithium battery group are monitored, and the lithium battery group discharge and recharge of monitoring is electric
Stream and voltage are sent to control module；
Control module includes：PC connects extreme, charge and discharge control module 11, communication check module；
The control module connection end connection of charge and discharge control module and charge-discharge machine, charge and discharge control module is filled for acquisition
The service data information of Electrical Discharge Machine；
Communication check module is connected with BMS modules, and the lithium battery group that communication check module is used to receive the transmission of BMS modules is filled
Discharge current and voltage；
PC is even extremely connected with PC, for the lithium battery group charging and discharging currents and voltage for obtaining control module, is filled
The service data information of Electrical Discharge Machine, the service data information transfer of BMS modules is to PC, and the lithium battery group that PC display is obtained is filled
Discharge current and voltage, the service data information of charge-discharge machine, the service data information of BMS modules, and by lithium battery group charge and discharge
Electric current and voltage, the service data information of charge-discharge machine, service data information and the threshold value of BMS modules are compared, and are assessed
The performance of tested distribution power automation terminal.
Preferably, in addition to：Digital regulation resistance for simulated battery state of temperature；
Control module also includes：Temperature detecting module, digital regulation resistance control module,
Digital regulation resistance control module is connected with digital regulation resistance, and digital regulation resistance control module is used to set digital current potential
Device exports different resistance signals to simulate different temperatures value, is detected for BMS modules；
BMS modules are connected with digital regulation resistance and temperature detecting module respectively, and BMS modules are used to detect digital regulation resistance mould
The temperature information of plan, and the temperature information of detection is sent to control module, the temperature information that control module detects BMS modules
The temperature information set with digital regulation resistance is compared, to detect the temperature detecting function of BMS modules.
Preferably, in addition to：First programmable power supply；
First programmable power supply is connected with control module, and the first programmable power supply is used to replace a certain lithium electricity in lithium battery group
Pond, and simulation output one saves the voltage of lithium battery abnormality；
Control module also includes：Balanced detection module；
Balanced detection module is used for the simulated battery voltage for adjusting the first programmable power supply, exports the first programmable power supply
Simulated battery voltage meet equilibrium condition, the balanced unlatching situation of observation BMS modules, and detect the equilibrium electricity under current state
Stream.
Preferably, BMS modules also include：Single lithium battery detection module；
Single lithium battery detection module is used to detect the voltage of each section lithium battery in lithium battery group, and will often save lithium battery
Voltage PC is transferred to by control module；
Control module also includes：Voltage detection module；
Voltage detection module be used for detect in lithium battery group it is each section lithium battery voltage, and by it is every section lithium battery voltage
It is transferred to PC；
PC is used for the often section lithium battery voltage detected according to BMS modules, and the often section lithium battery that control module is detected
Voltage is contrasted, and assesses detection function of the BMS modules for every section lithium battery voltage.
Preferably, charging and discharging circuit includes：Short-circuit protection detects circuit；
Short-circuit protection detection circuit includes：Short-circuit relay and electric capacity；
One end of short-circuit relay is connected with charging and discharging circuit one, and the other end of short-circuit relay passes through capacitance connection charge and discharge
Electrical circuit two；
Control module also includes：Charge and discharge protecting module；
Charge and discharge protecting module is connected with short-circuit relay control end, and charge and discharge protecting module is used for control module and exports short
Short-circuit relay in road signal, control charging and discharging circuit, detects BMS module short circuit defencive functions.
Preferably, in addition to：Second programmable power supply；
Second programmable power supply is connected with control module, and the second programmable power supply is used to be system power supply, and detects BMS moulds
The power consumption of block；
Control module also includes：Consumption detection module；
It is BMS module for power supply that consumption detection module, which is used for by the second programmable power supply, detects the work electricity of BMS modules
Stream, and PC is transferred to, to detect BMS module dissipation situations.
Preferably, in addition to：Fan；
Control module also includes：System temperature detects control module；
System temperature detection control module is used for the operating temperature of system, when temperature exceedes threshold value, system temperature detection
Control module control fan is opened, and system is radiated.
Preferably, charge and discharge control module is additionally operable to control charge-discharge machine electric to lithium with fixed current value to lithium battery group
Pond group discharge and recharge, and fixed current value is sent to PC；
BMS modules detect charging and discharging currents, and the charging and discharging currents of detection are sent into PC by control module；
Charging and discharging currents are detected, and the charging and discharging currents of detection are sent to PC；
The charging and discharging currents that PC is used to detect fixed current value with BMS modules are compared, to detect BMS modules
Current sense function.
Preferably, control module also includes：Reserved expanding communication interface end, RS485 communication links are reserved in display screen connection end
Connect end.
Preferably, lithium battery group includes：The lithium battery that 16 sections are connected in series；
BMS modules pass through RS485, or RS322 connections with control module；
BMS modules are connected with charge-discharge machine by CAN.
As can be seen from the above technical solutions, the utility model has advantages below：
Distribution power automation terminal can show detection BMS module relevant informations in real time with the test system of battery management；Mould
Intend the state parameters, the functional status to detect BMS modules such as lithium battery voltage, electric current, temperature.The system detection means is more
Sample, it is to avoid the hidden danger that single detection failure is brought, can accurately rapid feedback BMS module informations to PC, Comprehensive Evaluation BMS moulds
The quality problems of block；
Brief description of the drawings
In order to illustrate more clearly of the technical solution of the utility model, the required accompanying drawing used in description will be made below
Simply introduce, it should be apparent that, drawings in the following description are only some embodiments of the present utility model, for this area
For those of ordinary skill, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the overall schematic of the test system of distribution power automation terminal battery management；
Fig. 2 is A portions enlarged drawing in Fig. 1.
Embodiment
, below will fortune to enable utility model purpose of the present utility model, feature, advantage more obvious and understandable
With specific embodiment and accompanying drawing, the technical scheme that the utility model is protected is clearly and completely described, it is clear that below
Described embodiment is only a part of embodiment of the utility model, and not all embodiment.Based on the reality in this patent
Example is applied, all other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made all belongs to
The scope protected in this patent.
The present embodiment provides a kind of test system of distribution power automation terminal battery management, as depicted in figs. 1 and 2, bag
Include：PC 5, control module 1, BMS modules 2, lithium battery group 4, charge-discharge machine 3, charging and discharging circuit；Lithium battery group 4 includes：It is multiple
It is connected in series between lithium battery, lithium battery；
Charge-discharge machine 3 is provided with control module connection end 35, and charge output end 31, charging input end 32, output end 33 of discharging,
Discharge input 34；
BMS modules 2 include：Discharge and recharge incoming end 1, discharge and recharge incoming end 2 22, the pole of the first diode the 23, the 2nd 2
Pipe 24, first switch 25, second switch 26；Charging and discharging circuit is provided with charging and discharging circuit 1, charging and discharging circuit 2 85；
Electric discharge output end 33 and charging input end 32 are connected to the discharge and recharge of BMS modules by charging and discharging circuit 1 respectively
Incoming end 1；Discharge and recharge incoming end 1, lithium battery group positive pole, the anode of the first diode 23, the first end of first switch 25 is same
When connect；
Charging output end 31 and electric discharge input 34 are connected to the discharge and recharge of BMS modules 2 by charging and discharging circuit two respectively
Incoming end 2 22；Discharge and recharge incoming end 2 22, lithium battery group negative pole, the anode of the second diode 24, the end of second switch 26 second is same
When connect；The negative electrode of first diode 23, the end of first switch 25 second, the negative electrode of the second diode 24, the first end of second switch 26 is same
When connect；The connection end of BMS control modules 2 is connected with control module 1；
BMS modules 2 are connected with control module 1, and BMS modules 2 are used for by controlling first switch 25 and second switch 26 logical
It is disconnected, control the discharge and recharge of lithium battery group 4, and monitoring lithium battery group 4 charging and discharging currents and voltage, and by the lithium battery group of monitoring
Charging and discharging currents and voltage are sent to control module 1；
Control module 1 includes：PC connects extreme, charge and discharge control module 11, communication check module 12；
Charge and discharge control module 11 is connected with the control module connection end 35 of charge-discharge machine, and charge and discharge control module 11 is used for
Obtain the service data information of charge-discharge machine；
Communication check module 12 is connected with the connection end 25 of BMS modules 2, and communication check module 12 is used to receive BMS modules 2
The charging and discharging currents of lithium battery group 4 and voltage of transmission；
PC is even extremely connected with PC 5, for the lithium battery group charging and discharging currents and voltage for obtaining control module, is filled
The service data information of Electrical Discharge Machine, the service data information transfer of BMS modules is to PC, and the lithium battery group that PC display is obtained is filled
Discharge current and voltage, the service data information of charge-discharge machine, the service data information of BMS modules, and by lithium battery group charge and discharge
Electric current and voltage, the service data information of charge-discharge machine 3, service data information and the threshold value of BMS modules 2 are compared, and are commented
Estimate the performance of tested distribution power automation terminal.
In the present embodiment, the lithium battery that lithium battery group 4 is connected in series using 16 sections；BMS modules 2 pass through with control module 1
RS485, or RS322 connections；BMS modules 2 are connected with charge-discharge machine 3 by CAN.
System also includes：Digital regulation resistance 10 for simulated battery state of temperature；
Digital regulation resistance 10 can use PTC thermistor, or NTC thermistor.
PTC (Positive Temperature CoeffiCient) refers to that resistance is sharply increased at a certain temperature, had
There are the thermistor phenomenon or material of positive temperature coefficient, steady temperature sensor can be dedicated as.NTC(Negative
Temperature CoeffiCient) refer to that rising resistance with temperature has exponent relation reduction, the temperature-sensitive with negative temperature coefficient
Resistance phenomenon and material.
Control module 1 also includes：Temperature detecting module, digital regulation resistance control module 13, digital regulation resistance control module
13 are connected with digital regulation resistance 10, and digital regulation resistance control module 13 is used to set digital regulation resistance 10 to export different resistance letters
Number to simulate different temperatures value, detected for BMS modules 2；
BMS modules 2 are connected with digital regulation resistance 10 and temperature detecting module respectively, and BMS modules 2 are used to detect digital current potential
The temperature information of device simulation, and the temperature information of detection is sent to control module 1, control module 1 detects BMS modules 2
The temperature information that temperature information is set with digital regulation resistance 10 is compared, to detect the temperature detecting function of BMS modules 2.
System also includes：First programmable power supply 6；First programmable power supply 6 is connected with control module 1, and first may be programmed
Power supply 6 is used to replace lithium battery 41 in lithium battery group 4, and the voltage of the abnormality of simulation output lithium battery 41；Control module 1 is also
Including：Balanced detection module；Balanced detection module is used for the simulated battery voltage for adjusting the first programmable power supply, makes first can compile
The simulated battery voltage of journey power supply output meets equilibrium condition, the balanced unlatching situation of observation BMS modules, and detects under current state
Euqalizing current.
BMS modules 2 also include：Single lithium battery detection module；
Single lithium battery detection module is used to detect the voltage of each section lithium battery in lithium battery group, and will often save lithium battery
Voltage PC is transferred to by control module；Control module 1 also includes：Voltage detection module；Voltage detection module is used to examine
The voltage of each section lithium battery in lithium battery group is surveyed, and the voltage of every section lithium battery is transferred to PC 5；PC 5 is used for basis
The often section lithium battery voltage that BMS modules 1 are detected, and the often section lithium battery voltage of control module detection are contrasted, and assess BMS
Detection function of the module for every section lithium battery voltage.
Charging and discharging circuit includes：Short-circuit protection detects circuit；Short-circuit protection detection circuit includes：Short-circuit relay and electricity
Hold；One end of short-circuit relay is connected with charging and discharging circuit one, and the other end of short-circuit relay is returned by capacitance connection discharge and recharge
Road two；
Control module 1 also includes：Charge and discharge protecting module；Charge and discharge protecting module is connected with short-circuit relay control end,
Charge and discharge protecting module is used for short-circuit relay in control module output short-circuit signal, control charging and discharging circuit, detects BMS modules
2 short-circuit protection functions.
System also includes：Second programmable power supply 7；Second programmable power supply 7 is connected with control module 1, and second may be programmed
Power supply 7 is used to be system power supply, and detects the power consumption of BMS modules 2；
Control module 1 also includes：Consumption detection module；It is BMS that consumption detection module, which is used for by the second programmable power supply,
Module for power supply, detects the operating current of BMS modules, and is transferred to PC, to detect BMS module dissipation situations.
System also includes：Fan 9；Control module 1 also includes：System temperature detects control module；System temperature detection control
Molding block is used for the operating temperature of system, when temperature exceedes threshold value, and system temperature detection control module control fan 9 is opened,
System is radiated.
Charge and discharge control module is additionally operable to control charge-discharge machine 3 and lithium battery group is filled with fixed current value to lithium battery group
Electric discharge, and fixed current value is sent to PC 5；BMS modules 2 detect charging and discharging currents, and will be detected by control module
Charging and discharging currents be sent to PC；Charging and discharging currents are detected, and the charging and discharging currents of detection are sent to PC 5, PC 5 is used
It is compared in the charging and discharging currents for detecting fixed current value with BMS modules, to detect the current detecting work(of BMS modules
Energy.
Control module 1 also includes：Reserved expanding communication interface end, RS485 communication connections end is reserved in display screen connection end.
The function of control module 1 can so be extended.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Identical similar portion is referred to mutually between the difference of embodiment, each embodiment.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or new using this practicality
Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can in other embodiments be realized in the case where not departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (10)
1. a kind of test system of distribution power automation terminal battery management, it is characterised in that including：PC, control module,
BMS modules, lithium battery group, charge-discharge machine, charging and discharging circuit；
Lithium battery group includes：It is connected in series between multiple lithium batteries, lithium battery；
Charge-discharge machine is provided with control module connection end, and charge output end, charging input end, output end of discharging, and discharge input；
BMS modules include：Discharge and recharge incoming end one, discharge and recharge incoming end two, the first diode, the second diode, first switch,
Second switch；
Charging and discharging circuit is provided with charging and discharging circuit one, charging and discharging circuit two；
Electric discharge output end and charging input end are connected to the discharge and recharge incoming end one of BMS modules by charging and discharging circuit one respectively；
Discharge and recharge incoming end one, lithium battery group positive pole, the first diode anode, first switch first end is connected simultaneously；
Charging output end and electric discharge input are connected to the discharge and recharge incoming end two of BMS modules by charging and discharging circuit two respectively；
Discharge and recharge incoming end two, lithium battery group negative pole, the second diode anode, the end of second switch second is connected simultaneously；First diode
Negative electrode, the end of first switch second, the second diode cathode, second switch first end is connected simultaneously；BMS control modules connection end with
Control module is connected；
BMS modules are connected with control module, and BMS modules are used for by controlling first switch and second switch break-make, control lithium electricity
Pond group discharge and recharge, and monitoring lithium battery group charging and discharging currents and voltage, and by the lithium battery group charging and discharging currents of monitoring and
Voltage is sent to control module；
Control module includes：PC connects extreme, charge and discharge control module 11, communication check module；
The control module connection end connection of charge and discharge control module and charge-discharge machine, charge and discharge control module is used to obtain discharge and recharge
The service data information of machine；
Communication check module is connected with BMS modules, and communication check module is used for the lithium battery group discharge and recharge for receiving the transmission of BMS modules
Electric current and voltage；
PC is even extremely connected with PC, for the lithium battery group charging and discharging currents and voltage for obtaining control module, discharge and recharge
The service data information of machine, the service data information transfer of BMS modules is to PC, the lithium battery group discharge and recharge of PC display acquisition
Electric current and voltage, the service data information of charge-discharge machine, the service data information of BMS modules, and lithium battery group discharge and recharge is electric
Stream and voltage, the service data information of charge-discharge machine, service data information and the threshold value of BMS modules are compared, and assess tested
The performance of distribution power automation terminal.
2. the test system of distribution power automation terminal battery management according to claim 1, it is characterised in that
Also include：Digital regulation resistance for simulated battery state of temperature；
Control module also includes：Temperature detecting module, digital regulation resistance control module,
Digital regulation resistance control module is connected with digital regulation resistance, and digital regulation resistance control module is used to set digital regulation resistance defeated
Go out different resistance signals to simulate different temperatures value, detected for BMS modules；
BMS modules are connected with digital regulation resistance and temperature detecting module respectively, and BMS modules are used to detect digital regulation resistance simulation
Temperature information, and the temperature information of detection is sent to control module, temperature information and number that control module detects BMS modules
The temperature information that word potentiometer is set is compared, to detect the temperature detecting function of BMS modules.
3. the test system of distribution power automation terminal battery management according to claim 1, it is characterised in that
Also include：First programmable power supply；
First programmable power supply is connected with control module, and the first programmable power supply is used to replace a certain lithium battery in lithium battery group,
And simulation output one saves the voltage of lithium battery abnormality；
Control module also includes：Balanced detection module；
Balanced detection module is used for the simulated battery voltage for adjusting the first programmable power supply, the mould for exporting the first programmable power supply
Intend cell voltage and meet equilibrium condition, the balanced unlatching situation of observation BMS modules, and detect the euqalizing current under current state.
4. the test system of distribution power automation terminal battery management according to claim 3, it is characterised in that
BMS modules also include：Single lithium battery detection module；
Single lithium battery detection module be used for detect in lithium battery group it is each section lithium battery voltage, and by it is every section lithium battery electricity
Pressure is transferred to PC by control module；
Control module also includes：Voltage detection module；
Voltage detection module is used to detect the voltage of each section lithium battery in lithium battery group, and the voltage of every section lithium battery is transmitted
To PC；
PC is used for the often section lithium battery voltage detected according to BMS modules, and the often section lithium battery voltage that control module is detected
Contrasted, assess detection function of the BMS modules for every section lithium battery voltage.
5. the test system of distribution power automation terminal battery management according to claim 1, it is characterised in that
Charging and discharging circuit includes：Short-circuit protection detects circuit；
Short-circuit protection detection circuit includes：Short-circuit relay and electric capacity；
One end of short-circuit relay is connected with charging and discharging circuit one, and the other end of short-circuit relay is returned by capacitance connection discharge and recharge
Road two；
Control module also includes：Charge and discharge protecting module；
Charge and discharge protecting module is connected with short-circuit relay control end, and charge and discharge protecting module is believed for control module output short-circuit
Number, short-circuit relay in control charging and discharging circuit detects BMS module short circuit defencive functions.
6. the test system of distribution power automation terminal battery management according to claim 1, it is characterised in that
Also include：Second programmable power supply；
Second programmable power supply is connected with control module, and the second programmable power supply is used to be system power supply, and detects BMS modules
Power consumption；
Control module also includes：Consumption detection module；
It is BMS module for power supply that consumption detection module, which is used for by the second programmable power supply, detects the operating current of BMS modules, and
PC is transferred to, to detect BMS module dissipation situations.
7. the test system of distribution power automation terminal battery management according to claim 1, it is characterised in that
Also include：Fan；
Control module also includes：System temperature detects control module；
System temperature detection control module is used for the operating temperature of system, when temperature exceedes threshold value, system temperature detection control
Module control fan is opened, and system is radiated.
8. the test system of distribution power automation terminal battery management according to claim 1, it is characterised in that
Charge and discharge control module be additionally operable to control charge-discharge machine to lithium battery group with fixed current value to lithium battery group discharge and recharge,
And fixed current value is sent to PC；
BMS modules detect charging and discharging currents, and the charging and discharging currents of detection are sent into PC by control module；
Charging and discharging currents are detected, and the charging and discharging currents of detection are sent to PC；
The charging and discharging currents that PC is used to detect fixed current value with BMS modules are compared, to detect the electricity of BMS modules
Current detection functionality.
9. the test system of distribution power automation terminal battery management according to claim 1, it is characterised in that
Control module also includes：Reserved expanding communication interface end, RS485 communication connections end is reserved in display screen connection end.
10. the test system of distribution power automation terminal battery management according to claim 1, it is characterised in that
Lithium battery group includes：The lithium battery that 16 sections are connected in series；
BMS modules pass through RS485, or RS322 connections with control module；
BMS modules are connected with charge-discharge machine by CAN.
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| CN201720058741.4U CN206450814U (en) | 2017-01-17 | 2017-01-17 | A kind of test system of distribution power automation terminal battery management |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459646A (en) * | 2018-12-26 | 2019-03-12 | 深圳市智锂能源科技有限公司 | A kind of lithium battery group analog machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459646A (en) * | 2018-12-26 | 2019-03-12 | 深圳市智锂能源科技有限公司 | A kind of lithium battery group analog machine |
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