CN110095730A - Battery performance detection and assessment device during a kind of new-energy automobile Second-hand Vehicle Transaction - Google Patents

Battery performance detection and assessment device during a kind of new-energy automobile Second-hand Vehicle Transaction Download PDF

Info

Publication number
CN110095730A
CN110095730A CN201910322229.XA CN201910322229A CN110095730A CN 110095730 A CN110095730 A CN 110095730A CN 201910322229 A CN201910322229 A CN 201910322229A CN 110095730 A CN110095730 A CN 110095730A
Authority
CN
China
Prior art keywords
module
detection
battery
discharge
inner casing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201910322229.XA
Other languages
Chinese (zh)
Other versions
CN110095730B (en
Inventor
黄艳玲
金雷
郭大民
王立刚
金艳秋
修玲玲
江利民
孙佳宝
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Liaoning Provincial College of Communications
Original Assignee
Liaoning Provincial College of Communications
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Liaoning Provincial College of Communications filed Critical Liaoning Provincial College of Communications
Priority to CN201910322229.XA priority Critical patent/CN110095730B/en
Publication of CN110095730A publication Critical patent/CN110095730A/en
Application granted granted Critical
Publication of CN110095730B publication Critical patent/CN110095730B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/392Determining battery ageing or deterioration, e.g. state of health

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Secondary Cells (AREA)
  • Tests Of Electric Status Of Batteries (AREA)

Abstract

The invention discloses battery performance detections during a kind of new-energy automobile Second-hand Vehicle Transaction and assessment device, including detecting shell, the detection inner casing and battery being socketed in detection shell, the display screen for showing detection data and assessing data is connected on the side wall of the detection shell, movable button is installed on detection shell below display screen, the outside of button is cased with the first spring to connect with detection inner casing, detect fixing circuit board on the outer wall of inner casing, it will test and increase damping between shell and detection inner casing, protection is internal, to battery during carrying out charge and discharge, the data that current sampling module and voltage sample module will test are transmitted to signal conversion module, the analog-to-digital conversion of signal conversion module progress data, the process of test and result data are converted into visual information and send display screen to, test result into Row assessment, the battery parameters completely new with same model compare, and show on a display screen.

Description

Battery performance detection and assessment device during a kind of new-energy automobile Second-hand Vehicle Transaction
Technical field
The present invention relates to a kind of battery detection equipment, in particular to electricity during a kind of new-energy automobile Second-hand Vehicle Transaction Pond performance detection and assessment device.
Background technique
Existing battery performance detection machine, mainly for detection of overcurrent, voltage, capacity, internal resistance, charging, discharge temp, Battery cycle life is able to satisfy each producer and detects to the production of high, medium and low battery.New energy car battery is a requirement High-quality, the product of high safety, consumer often do not know the performance of battery when in use, lead to the work of battery when in use Dreamboat is often not achieved in efficiency, sometimes even blindly using the generation that can also cause battery explosion event, life safety Will receive damage, thus the performance of electrolytic cell be also it is vital, battery performance detects battery in second-hand new-energy automobile Performance.
There are certain drawbacks in existing detection machine, power consumption is more serious when in use, and cruising ability difference is compared to poor, no Have a function of shatter-resistant, when unexpected situation occurs, is easy to drop detection machine, influences the normal use in work, it cannot handle in time Data detected are printed and are saved.
The non-isolated direct sampling of sampling resistor working method is detected, when high current works, element self-temperature is increased, and is caused Error varies with temperature and changes, and present equipment is controlled using unit piece, and no check and evaluation function needs professional to pass through number Make artificial assessment according to analysis to be not suitable for, accurate assessment can not be provided.
Summary of the invention
Invention be designed to provide a kind of new-energy automobile Second-hand Vehicle Transaction during battery performance detection filled with assessment It sets, has the advantages that damping, evaluation function, to solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme: during a kind of new-energy automobile Second-hand Vehicle Transaction Battery performance detection and assessment device, including detection shell, the detection inner casing and battery that are socketed in detection shell, the inspection It surveys and is connected on the side wall of shell for showing detection data and assessing the display screen of data, the detection shell below display screen On movable button is installed, the outside of button is cased with the first spring to connect with detection inner casing, detects solid on the outer wall of inner casing Determine circuit board, level change occurs for the contact on circuit board and button contacts;
The detection shell and the gap location detected between inner casing install damping at equal intervals, and damping includes elastic rubber Blob of viscose and second spring, elastic block rubber and second spring are connected with detection shell and the opposite outer wall of detection inner casing side by side It connects;
The partition of the compartment is horizontally installed in the middle part of the detection inner casing, the inside for detecting inner casing is divided into monitor station under Monitor station is hung with cell terminal at the top of upper monitor station, is hung with temperature sensor at the top of lower monitor station;
The battery is placed in monitor station or lower monitor station, and the top both ends of battery, which are connected with, to connect with internal cell piece Junction block, the side wall of battery are connected with the temperature detection cylinder for extending to cell piece gap location, and temperature sensor is inserted into temperature detection Internal temperature of battery is detected in cylinder, cell terminal is inserted into junction block, detects voltage, internal resistance, appearance in battery charge and discharge process Amount, internal pressure, self-discharge rate data.
Further, soldering has rectification module, filter module, charge and discharge protecting module, discharge load, electric current on circuit board Sampling module, voltage sample module, signal conversion module and processor;
Wherein, the output end of rectification module connects with filter module, and the output end of filter module connects with battery, the input of battery End connects with charge and discharge protecting module, and output end and temperature sensor, discharge load, current sampling module and the voltage of battery are adopted Egf block connects, and the output end of temperature sensor, current sampling module and voltage sample module connects with signal conversion module, letter The output end of number conversion module connects with processor, and the output end and display screen of processor connect;
The rectification module is used for the alternating current for providing Alternating Current Unit, is transformed into 48V 24V direct current electricity output;
The filter module is obtained for effectively filtering out to the frequency other than the frequency point or the frequency point of specific frequency in power supply The power supply signal of frequency is complied with standard to one, stable electric current charges;
The charge and discharge protecting module is used for during charge and discharge, flows through the high-power FET of each control of discharge Electric current it is almost the same, the electric current for flowing through the high-power FET of each charge control is also almost the same, avoids because of a large amount of electricity Stream is flowed through and breakdown is burnt;
The discharge load is for obtaining motor, engine of electric current etc. in discharge process;
The current sampling module is used for the data acquisition module of real-time measurement battery electric current during charge or discharge, The isolation and sensing of signal are realized using high-accuracy current transformer;
The voltage sample module is used for the data acquisition module of real-time measurement battery voltage during charge or discharge;
The signal conversion module is used for current sampling module voltage sample module information, and carries out signal level conversion, so Transformation result is transmitted to processor afterwards and carries out program processing.
Further, button input changes the voltage value of rectification module.
Further, circuit board is additionally provided with contrast module, the battery of detection with the completely new battery parameters of model into Row comparison, and show on a display screen.
Compared with prior art, the beneficial effects of the present invention are:
During this new-energy automobile Second-hand Vehicle Transaction battery performance detection with assessment device, will test shell and detection inner casing it Between increase damping, when outside is shaken, damping absorbs the impact force of vibration, and protection is internal, exists to battery During carrying out charge and discharge, detection mode is simple, the data transmission that current sampling module and voltage sample module will test To signal conversion module, signal conversion module carries out the analog-to-digital conversion of data, and the process of test and result data are converted to can Visual information sends display screen to, at this point, operator, can monitor entire test process and test result by display screen, surveys Test result is assessed, and the battery parameters completely new with same model compare, and show on a display screen.
Detailed description of the invention
Fig. 1 is whole Facad structure figure of the invention;
Fig. 2 is detection device internal structure chart of the invention;
Fig. 3 is battery structure figure of the invention;
Fig. 4 is module connection figure of the invention.
In figure: 1, detecting shell;11, display screen;12, button;121, the first spring;2, inner casing is detected;21, circuit board; 211, rectification module;212, filter module;213, charge and discharge protecting module;214, discharge load;215, current sampling module; 216, voltage sample module;217, signal conversion module;218, processor;22, partition;23, upper monitor station;231, battery wire Column;24, lower monitor station;241, temperature sensor;3, battery;31, junction block;32, temperature detection cylinder;4, damping;41, bullet Property rubber block;42, second spring.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, battery performance detection and assessment device, including inspection during a kind of new-energy automobile Second-hand Vehicle Transaction The detection inner casing 2 and battery 3 surveying shell 1, being socketed in detection shell 1, detect and are connected on the side wall of shell 1 for showing Detection data and the display screen 11 for assessing data are equipped with movable button 12 on the detection shell 1 of the lower section of display screen 11, press Button 12 can be used to control device and be turned on or off, and control output voltage size etc., the outside of button 12 be cased with The first spring 121 for connecting of detection inner casing 2 detects fixing circuit board 21 on the outer wall of inner casing 2, the contact on circuit board 21 with press Level change occurs for the contact of button 12.
Referring to Fig. 2, detection shell 1 and the gap location detected between inner casing 2 install damping 4, damping at equal intervals Mechanism 4 includes elastic block rubber 41 and second spring 42, elastic block rubber 41 and second spring 42 side by side with detection shell 1 and inspection It surveys the opposite outer wall of inner casing 2 to be attached, will test and increase damping between shell 1 and detection inner casing 2, be shaken in outside When, damping 4 absorbs the impact force of vibration, and protection is internal;The middle part of detection inner casing 2 is horizontally installed with the compartment Partition 22, detection inner casing 2 inside be divided into monitor station 23 and lower monitor station 24, the top of upper monitor station 23 is hung with battery Binding post 231, the top of lower monitor station 24 are hung with temperature sensor 241, and cell terminal 231 and temperature sensor 241 are right Battery carries out the detection in performance.
Referring to Fig. 3, battery 3 is placed in monitor station 23 or lower monitor station 24, carried out not on different monitor stations Same detection, the top both ends of battery 3 are connected with the junction block 31 to connect with internal cell piece, and the side wall of battery 3, which is connected with, to be prolonged The temperature detection cylinder 32 of cell piece gap location is extended to, temperature sensor 241 is inserted into 3 inside temperature of detection battery in temperature detection cylinder 32 Degree, cell terminal 231 are inserted into junction block 31, are detected voltage in 3 charge and discharge process of battery, internal resistance, capacity, internal pressure, are put certainly Electric rate data, detection mode are simple.
Referring to Fig. 4, on circuit board 21 soldering have rectification module 211, filter module 212, charge and discharge protecting module 213, Discharge load 214, current sampling module 215, voltage sample module 216, signal conversion module 217 and processor 218.
Wherein, the input of button 12 changes the voltage value of rectification module 211, the output end and filter module of rectification module 211 212 connect, and the output end of filter module 212 connects with battery 3, and the input terminal of battery 3 connects with charge and discharge protecting module 213, The output end of battery 3 and temperature sensor 241,216 phase of discharge load 214, current sampling module 215 and voltage sample module It connects, output end and 217 phase of signal conversion module of temperature sensor 241, current sampling module 215 and voltage sample module 216 It connects, the output end of signal conversion module 217 connects with processor 218, and the output end and display screen 11 of processor 218 connect, electricity Road plate 21 is additionally provided with contrast module, and the battery 3 of detection battery 3 parameters completely new with same model compare, and are showing It is shown on screen 11.
Rectification module 211 is used for the alternating current for providing Alternating Current Unit, is transformed into 48V 24V direct current electricity output.
Filter module 212 is used to effectively filter out the frequency other than the frequency point or the frequency point of specific frequency in power supply, The power supply signal for complying with standard frequency is obtained, stable electric current charges.
Charge and discharge protecting module 213 is used for during charge and discharge, flows through the high-power field-effect of each control of discharge The electric current of pipe is almost the same, and the electric current for flowing through the high-power FET of each charge control is also almost the same, avoids because a large amount of Electric current is flowed through and breakdown is burnt.
Discharge load 214 is for obtaining motor, engine of electric current etc. in discharge process.
Current sampling module 215 is used for the data acquisition module of electric current during charge or discharge of real-time measurement battery 3 Block realizes the isolation and sensing of signal using high-accuracy current transformer.
Voltage sample module 216 is used for the data acquisition module of voltage during charge or discharge of real-time measurement battery 3 Block.
Signal conversion module 217 is used for 215 voltage sample module of current sampling module, 216 information, and carries out signal level Then transformation result is transmitted to processor 218 and carries out program processing by conversion.
Working principle: to battery 3 during carrying out charge and discharge, current sampling module 215 and voltage sample module 216 The data that will test are transmitted to signal conversion module 217, and signal conversion module 217 carries out the analog-to-digital conversion of data, will test Process and result data be converted to visual information and send display screen 11 to, at this point, operator, can be supervised by display screen 11 Depending on entire test process and test result, test result is assessed, and battery 3 parameters completely new with same model carry out pair Than, and shown on display screen 11.
In conclusion battery performance detection is filled with assessment during new-energy automobile Second-hand Vehicle Transaction proposed by the present invention It sets, will test and increase damping between shell 1 and detection inner casing 2, when outside is shaken, damping 4 is by the impact of vibration Power is absorbed, and protection is internal, and to battery 3 during carrying out charge and discharge, detection mode is simple, current sampling module 215 The data that will test with voltage sample module 216 are transmitted to signal conversion module 217, and signal conversion module 217 carries out data Analog-to-digital conversion, the process of test and result data are converted into visual information and send display screen 11 to, at this point, operator, Entire test process and test result can be monitored by display screen 11, test result is assessed, the completely new electricity with same model 3 parameters of pond compare, and show on display screen 11.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims (4)

1. battery performance detection and assessment device during a kind of new-energy automobile Second-hand Vehicle Transaction, which is characterized in that including inspection It surveys shell (1), be socketed in the detection inner casing (2) and battery (3) detected in shell (1), on the side wall of detection shell (1) It is connected with for showing detection data and assessing the display screen (11) of data, on the detection shell (1) below display screen (11) It is equipped with movable button (12), the outside of button (12) is cased with the first spring (121) to connect with detection inner casing (2), detection Fixing circuit board (21) on the outer wall of inner casing (2), the contact on circuit board (21) is contacted with button (12) occurs level change;
Detection shell (1) and the gap location detected between inner casing (2) install damping (4), damping at equal intervals It (4) include elastic block rubber (41) and second spring (42), elastic block rubber (41) and second spring (42) are outer with detection side by side Shell (1) and detection inner casing (2) opposite outer wall are attached;
The partition (22) of the compartment is horizontally installed in the middle part of detection inner casing (2), the inside of detection inner casing (2) is divided into Monitor station (23) and lower monitor station (24) are hung with cell terminal (231) at the top of upper monitor station (23), lower monitor station (24) Top be hung with temperature sensor (241);
The battery (3) is placed in monitor station (23) or lower monitor station (24), the top both ends of battery (3) be connected with it is interior The junction block (31) that portion's cell piece connects, the side wall of battery (3) are connected with the temperature detection cylinder for extending to cell piece gap location (32), battery (3) internal temperature is detected in temperature sensor (241) insertion temperature detection cylinder (32), cell terminal (231) is inserted Enter in junction block (31), detects voltage, internal resistance, capacity, internal pressure, self-discharge rate data in battery (3) charge and discharge process.
2. battery performance detection is filled with assessment during a kind of new-energy automobile Second-hand Vehicle Transaction according to claim 1 It sets, it is characterised in that: soldering has rectification module (211), filter module (212), charge and discharge protecting module on circuit board (21) (213), discharge load (214), current sampling module (215), voltage sample module (216), signal conversion module (217) and place It manages device (218);
Wherein, the output end of rectification module (211) connects with filter module (212), the output end and battery of filter module (212) (3) connect, the input terminal of battery (3) connects with charge and discharge protecting module (213), the output end and temperature sensor of battery (3) (241), discharge load (214), current sampling module (215) and voltage sample module (216) connect, temperature sensor (241), The output end of current sampling module (215) and voltage sample module (216) connects with signal conversion module (217), signal conversion The output end of module (217) connects with processor (218), and the output end and display screen (11) of processor (218) connect;
The rectification module (211) is used for the alternating current for providing Alternating Current Unit, is transformed into 48V 24V direct current Output;
The filter module (212) is for effectively filtering the frequency other than the frequency point or the frequency point of specific frequency in power supply It removes, obtains the power supply signal for complying with standard frequency, stable electric current charges;
The charge and discharge protecting module (213) is used for during charge and discharge, flows through the high-power field of each control of discharge The electric current of effect pipe is almost the same, and the electric current for flowing through the high-power FET of each charge control is also almost the same, avoid because A large amount of electric currents are flowed through and breakdown are burnt;
The discharge load (214) is for obtaining motor, engine of electric current etc. in discharge process;
The current sampling module (215) for real-time measurement battery (3) during charge or discharge electric current data Acquisition module realizes the isolation and sensing of signal using high-accuracy current transformer;
The voltage sample module (216) for real-time measurement battery (3) during charge or discharge voltage data Acquisition module;
The signal conversion module (217) is used for current sampling module (215) voltage sample module (216) information, and carries out Then transformation result is transmitted to processor (218) and carries out program processing by signal level conversion.
3. battery performance detection is filled with assessment during a kind of new-energy automobile Second-hand Vehicle Transaction according to claim 1 It sets, it is characterised in that: button (12) input changes the voltage value of rectification module (211).
4. battery performance detection is filled with assessment during a kind of new-energy automobile Second-hand Vehicle Transaction according to claim 1 Set, it is characterised in that: circuit board (21) is additionally provided with contrast module, the battery (3) of detection with the completely new battery of model (3) items Parameter compares, and shows on display screen (11).
CN201910322229.XA 2019-04-22 2019-04-22 Battery performance detection and evaluation device in new energy automobile second-hand vehicle transaction process Active CN110095730B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910322229.XA CN110095730B (en) 2019-04-22 2019-04-22 Battery performance detection and evaluation device in new energy automobile second-hand vehicle transaction process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910322229.XA CN110095730B (en) 2019-04-22 2019-04-22 Battery performance detection and evaluation device in new energy automobile second-hand vehicle transaction process

Publications (2)

Publication Number Publication Date
CN110095730A true CN110095730A (en) 2019-08-06
CN110095730B CN110095730B (en) 2024-03-29

Family

ID=67445401

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910322229.XA Active CN110095730B (en) 2019-04-22 2019-04-22 Battery performance detection and evaluation device in new energy automobile second-hand vehicle transaction process

Country Status (1)

Country Link
CN (1) CN110095730B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112433168A (en) * 2020-11-04 2021-03-02 湖南银联湘北铜业有限公司 Waste battery detection device

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080284444A1 (en) * 2007-05-15 2008-11-20 Qinglan Li Method for on-line measurement of battery internal resistance, current operational module, and on-line measurement instrument for battery internal resistance
US20100097733A1 (en) * 2007-12-14 2010-04-22 E Tomimbang Wendell Arc fault circuit interrupter, systems, apparatus and methods of detecting and interrupting electrical faults
CN103754133A (en) * 2014-01-26 2014-04-30 方贵龙 Parallel high-power electromobile direct-current charging power system based on STM32
CN105337417A (en) * 2015-11-26 2016-02-17 国家电网公司 Circuit breaker controller comprising distributed type power distribution network and working method of circuit breaker controller
CN106291202A (en) * 2016-09-23 2017-01-04 国家电网公司 A kind of electrical characteristic test device of transformer station low voltage surge arrester
CN107144792A (en) * 2017-04-19 2017-09-08 杭州金秋汽车储能科技有限公司 A kind of performance of lithium ion battery detecting system
CN208314076U (en) * 2018-06-11 2019-01-01 国网江苏省电力有限公司沭阳县供电分公司 A kind of hand-held DCR of Transformer automatic testing equipment
CN210465641U (en) * 2019-04-22 2020-05-05 辽宁省交通高等专科学校 Battery performance detection and evaluation device in new energy automobile second-hand car transaction process

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080284444A1 (en) * 2007-05-15 2008-11-20 Qinglan Li Method for on-line measurement of battery internal resistance, current operational module, and on-line measurement instrument for battery internal resistance
US20100097733A1 (en) * 2007-12-14 2010-04-22 E Tomimbang Wendell Arc fault circuit interrupter, systems, apparatus and methods of detecting and interrupting electrical faults
CN103754133A (en) * 2014-01-26 2014-04-30 方贵龙 Parallel high-power electromobile direct-current charging power system based on STM32
CN105337417A (en) * 2015-11-26 2016-02-17 国家电网公司 Circuit breaker controller comprising distributed type power distribution network and working method of circuit breaker controller
CN106291202A (en) * 2016-09-23 2017-01-04 国家电网公司 A kind of electrical characteristic test device of transformer station low voltage surge arrester
CN107144792A (en) * 2017-04-19 2017-09-08 杭州金秋汽车储能科技有限公司 A kind of performance of lithium ion battery detecting system
CN208314076U (en) * 2018-06-11 2019-01-01 国网江苏省电力有限公司沭阳县供电分公司 A kind of hand-held DCR of Transformer automatic testing equipment
CN210465641U (en) * 2019-04-22 2020-05-05 辽宁省交通高等专科学校 Battery performance detection and evaluation device in new energy automobile second-hand car transaction process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112433168A (en) * 2020-11-04 2021-03-02 湖南银联湘北铜业有限公司 Waste battery detection device

Also Published As

Publication number Publication date
CN110095730B (en) 2024-03-29

Similar Documents

Publication Publication Date Title
KR101470553B1 (en) Apparatus and method for measuring isolation resistance of battery
CN105759147B (en) A kind of integrated testing device of cell management system of electric automobile
CN104220887A (en) Insulation resistance measurement device having malfunction self-diagnosis function, and method for self-diagnosing malfunction by using same
TW201413272A (en) Method and device for detecting state-of-health (SOH) of batteries
CN202339393U (en) Insulation detector of power battery system of electric vehicle
CN106546858A (en) A kind of detection method and device of distribution network failure type based on transient state component
CN106842108A (en) A kind of portable car-mounted direct current energy meter on-line measuring device
CN202025054U (en) Portable creepage current electrified detecting system for support insulator
CN206781546U (en) Multifunctional motor-driven automobile high-voltage electricity gas box
CN110095730A (en) Battery performance detection and assessment device during a kind of new-energy automobile Second-hand Vehicle Transaction
CN207528886U (en) A kind of lead-acid accumulator on-line monitoring is safeguarded and early warning system
CN205920161U (en) Two -way power with internal resistance of cell measurement function
CN210465641U (en) Battery performance detection and evaluation device in new energy automobile second-hand car transaction process
CN110308314A (en) Low-voltage anti-theft electric switch and its electricity anti-theft method
CN111092257A (en) Intelligent lithium ion battery
CN106323358A (en) High-voltage transmission line wireless current temperature monitoring device
CN213181938U (en) Lead-acid storage battery parameter monitoring device and system
CN214845491U (en) Charging connector detection circuit and battery replacement cabinet
CN212646946U (en) Zinc oxide arrester leakage current recorder
CN212229087U (en) Partial discharge live diagnosis and positioning device
CN210090644U (en) Monitoring device for vehicle-mounted storage battery
CN109591601B (en) Self-diagnosis current divider circuit for vehicle
CN209179842U (en) A kind of oil filter
CN108919979A (en) A kind of magnetic detection switching chargeable wireless mouse
CN111812538A (en) Power battery evaluation system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant