CN105896665A - Super-low power-consumption control circuit for new energy power lithium battery pack - Google Patents
Super-low power-consumption control circuit for new energy power lithium battery pack Download PDFInfo
- Publication number
- CN105896665A CN105896665A CN201610329165.2A CN201610329165A CN105896665A CN 105896665 A CN105896665 A CN 105896665A CN 201610329165 A CN201610329165 A CN 201610329165A CN 105896665 A CN105896665 A CN 105896665A
- Authority
- CN
- China
- Prior art keywords
- unit
- battery
- resistance
- pmos
- circuit
- 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.)
- Pending
Links
Classifications
-
- 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
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3835—Arrangements for monitoring battery or accumulator variables, e.g. SoC involving only voltage measurements
-
- 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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
-
- 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
Abstract
The invention provides a super-low power-consumption control circuit for a new energy power lithium battery pack. The control circuit comprises a battery voltage sampling unit used for monitoring the running state of each single battery in the battery pack in real time and monitoring the voltage of each single battery in the battery unit, a processing unit used for receiving the detection result from a detection unit, and a switch control unit used for controlling the on and off of a detection unit circuit. According to the super-low power-consumption control circuit, the switch control unit is provided, so that when the detection unit needs to detect the battery unit, the switch control unit controls the detection unit to be connected with the battery unit, and the detection unit works normally; when the detection unit does not need to detect the battery unit, the switch control unit controls the detection unit to be disconnected from the battery unit, and the detection unit does not work, so that the power consumption of the detection unit is reduced; the discrete degree and the balance degree of each single battery in the battery pack are improved; the reliability and the safety of the battery pack, and the charging-discharging efficiency of the battery are improved; and the cost is lowered.
Description
Technical field
The present invention relates to the voltage detecting circuit of set of cells, low particularly to a kind of lithium battery group
Power consuming voltage detection control circuit.
Background technology
The generally voltage of lithium-ion-power cell monomer is relatively low, if driving whole as energy source and power
Car, then need tens joint cells the most hundreds of joint cell to connect, and forms battery
Rated voltage is can be only achieved, for driving motor after group (PACK).
Owing to lithium ion battery is very sensitive to overdischarge and overcharge, if to lithium ion battery
Overdischarge or overcharge may result in lithium ion eventual failure, even cause danger, additionally
All of cell concordance in group and balance are required the highest by set of cells (PACK), as
It is the poorest that fruit exists, uneven, by saturated for the depth of discharge and charging having influence on whole set of cells
Degree, affects VMT Vehicle-Miles of Travel.So all cells must be carried out accurate voltage with
Track is measured.
And the current voltage collection circuit of major part power battery pack in industry, all use directly survey
Amount pattern, in set of cells, all of cell direct physical is connected to respective testing circuit,
The testing result of each monomer is directly output to processor by each testing circuit, it is achieved each battery list
The detection process of body.Do not detecting or during battery storage, each testing circuit still with each monomer
Battery keeps physical couplings, owing to testing circuit itself consumes electricity, and each detection
The consumption power consumption of circuit has and differs to property, in the middle of long-time storage or application process, and system
Meeting accumulation different power consumption, causes the degree of unbalancedness between each battery, ultimately results in the discrete of set of cells
And affect use mileage and service life.
Summary of the invention
For above-mentioned the deficiencies in the prior art, it is an object of the invention to provide a kind of low in energy consumption,
Reliability height and safety high one new forms of energy dynamic lithium battery group super low-power consumption control circuit.
To achieve these goals, the present invention is by the following technical solutions:
A kind of new forms of energy dynamic lithium battery super low-power consumption control circuit, it includes, battery unit,
For exporting electric energy；Detector unit, is connected with described battery unit, is used for detecting described battery
The voltage of unit, sends detection structure to processing unit；Processing unit, travels control for vehicle
System, receives the testing result of described detector unit；Switch control unit, is used for controlling described inspection
Survey the break-make of element circuit.
Preferably, described switch control unit is set to intelligent switching control circuit, described intelligence
Can ON-OFF control circuit be connected with described detector unit, for controlling described detection cell circuit
Break-make.
Preferably, described intelligent switching control circuit includes the first NMOS tube NM1, a PMOS
Pipe PM1, the grid of described first NMOS tube NM1 is connected with described processing unit, and described
The source electrode of one NMOS tube NM1 is connected to the ground, and the drain electrode of described first NMOS tube NM1 is with described
The grid of the first PMOS PM1 is connected, the source electrode of described first PMOS PM1 and described electricity
The positive pole of pond monomer is connected, the drain electrode of described first PMOS PM1 and described voltage detecting list
Unit is connected.
Preferably, also include the first resistance R1, the second resistance R2, the 3rd resistance R3, the 4th
Resistance R4 and the first diode D1, described first resistance R1 one end is connected with processing unit,
The grid of the other end and the first NMOS tube NM1 is connected, one end of described second resistance R2 and the
The grid of one NMOS tube NM1 is connected, and the other end is connected to the ground；Described first diode D1's
Negative pole is connected with the drain electrode of described first NMOS tube NM1, and described first diode D1 is just
Pole is connected with one end of described 3rd resistance R3, and the other end of described 3rd resistance R3 is with described
The grid of the first PMOS PM1 is connected, one end and described first of described 4th resistance R4
The grid of PMOS PM1 is connected, the other end of described 4th resistance R4 and a described PMOS
The source electrode of pipe PM1 is connected.
Preferably, a described NOMS pipe NM1 is set to N-channel enhancement mode metal-oxide-semiconductor.
Preferably, described first PMOS PM1 is set to P-channel enhancement type metal-oxide-semiconductor.
Preferably, described first diode D1 is set to isolating diode.
Preferably, described battery unit is set to the set of cells that several cells are connected into,
The corresponding described cell of described switch control unit is arranged.
Compared to prior art, the present invention, by having additional switch control unit, works as detector unit
When needing that cell is carried out voltage detecting, switch control unit controls the circuit of detector unit
Path, makes detector unit battery cell can be carried out voltage detecting；When detector unit need not
Battery cell is detected, as set of cells be in shipping storage shape need not detection time, switch
Control unit controls detection cell circuit and disconnects, each cell and detector unit in making set of cells
It is off, decreases the power consumption of detection cell circuit self, promote and control set of cells
In the discrete and degree of balance of each cell, improve the reliability of set of cells, safety and
Battery efficiency, has saved cost.
Accompanying drawing explanation
Fig. 1 is the circuit structure block diagram of the present invention；
Fig. 2 is the circuit theory diagrams of the present invention；
In figure: 1, battery unit；2, switch control unit；3, voltage detection unit；4、
Processing unit.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with
Drawings and Examples, are further elaborated to the present invention.Should be appreciated that this place is retouched
The specific embodiment stated only in order to explain the present invention, is not intended to limit the present invention.
As it is shown in figure 1, the present invention provides a kind of new forms of energy dynamic lithium battery group super low-power consumption to control
Circuit, single including battery unit 1, switch control unit 2, voltage detection unit 3 and process
Unit 4；Battery unit 1, as new forms of energy power, is used for driving motor；Voltage detection unit 3
It is connected with battery unit 1, for the voltage of tracking measurement battery unit 1, and by measurement result
Output is to processing unit 4；Switch control unit 2 turns in working order,.
As in figure 2 it is shown, battery unit 1 includes multiple cell Un, multiple battery cells
Un is composed in series set of cells, to reach to drive the rated voltage needed for motor.In the present invention,
Battery uses lithium ion battery, in real work, selects cell Un's as required
Quantity.
Voltage detection unit 3 includes multiple electric with cell Un voltage detecting one to one
Road, processing unit 4 is set to central processing unit, each voltage detecting circuit on the one hand and each
The positive pole of cell Un, negative pole are connected, and are on the other hand connected with central processing unit, are used for
Detect the voltage of each cell Un and testing result is flowed to central processing unit.Central authorities
Processor is mainly used in the live signal of receiving test circuit and signal is carried out AD modulus turns
Changing, the data coordinating master control program to obtain testing circuit AD analog digital conversion implement computing,
By the operation result an ancient swallowtailed flag Based Intelligent Control real to low consumption circuit switch to digital signal, to realize
To lowest power consumption control.
Owing to testing circuit itself consumes electricity, and each testing circuit consumes power consumption and has not
Concordance, in long-time storage or application process, can cause the degree of unbalancedness between each battery,
Ultimately result in the discrete of set of cells and affect use mileage and service life.Therefore, in order to effectively
Controlling the power consumption of testing circuit self, in lifting control set of cells, each cell is discrete and equal
Weighing apparatus degree.Being provided with switch control unit 2, switch control unit 2 is set to intelligent switching control
Circuit, for controlling the break-make of each testing circuit, when each testing circuit needs each cell
When carrying out voltage detecting, it is path that ON-OFF control circuit controls each testing circuit, makes each detection electricity
Road normally works and detects each cell；When set of cells is in shipping storage state, respectively
When testing circuit need not detect each cell, ON-OFF control circuit controls each detection
Circuit is open circuit, and the most each testing circuit and each cell are in the state of disconnection, decrease
Degree of unbalancedness between the power consumption of each testing circuit self and each battery.
ON-OFF control circuit includes the first NMOS tube NM1, the first PMOS PM1, the first electricity
Resistance R1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4 and the first diode D1；
Wherein, one end of the first resistance R1 is connected with central processing unit, the other end of the first resistance R1
It is connected with the grid of the first NMOS tube NM1；One end of second resistance R2 and the first NMOS tube
The grid of NM1 is connected, the other end of the second resistance R2 and the source electrode phase of the first NMOS tube NM1
Even；The source electrode of the first NMOS tube NM1 is connected to the ground, the drain electrode of the first NMOS tube NM1 and the
The negative pole of one diode D1 is connected；The positive pole of the first diode D1 and the one of the 3rd resistance D3
End is connected；The other end of the 3rd resistance R3 and the grid of the first PMOS PM1 are connected；4th
One end of resistance R4 is connected with the grid of the first PMOS PM1, another of the 4th resistance R4
End is connected with the source electrode of the first PMOS PM1；The source electrode of the first PMOS PM1 and battery list
The positive pole output of body Un is connected, and the drain electrode of the first PMOS PM1 is defeated with voltage detecting circuit
Enter end to be connected.
When testing circuit is in detection duty, central processing unit is to the first NMOS tube NM1
Output high level pulse signal, the first NMOS tube NM1 is in forward bias conducting state, with
Time the negative pole current potential of the first diode D1 is dragged down, now the negative pole of the first diode D1 is electronic
Gesture is about reference point ground 0 current potential；First diode D1 forward conduction, the first PMOS PM1
Vgs less than its cut-in voltage, the first PMOS PM1 also forward bias turns on so that inspection
Slowdown monitoring circuit is in channel status, and testing circuit normally works.
When testing circuit is in non-detection duty, central processing unit is to the first NMOS tube
NM1 output low level pulse signal or shutdown signal output, the first NMOS tube NM1 is in cuts
Only state, the first PMOS PM1 is also at cut-off state so that testing circuit is in disconnection
State, testing circuit does not works, thus each cell Un in set of cells and voltage
Testing circuit is in intelligent switch state or departs from from circuit system, it is achieved the intelligence of super low-power consumption
Energy on-off control, this circuit has ultralow inner resistance and high speed break-make control characteristic.
In the present embodiment, the first NMOS tube NM1 uses N-channel enhancement mode MOSFET pipe,
First PMOS PM1 uses P-channel enhancement type MOSFET pipe, and its internal resistance is low, and power consumption is little,
The power consumption of circuit self has dropped；First diode D1 uses isolating diode；It addition, pass through
It is parallel with the 3rd resistance R3, the 4th resistance R4 and the first PMOS is carried out dividing potential drop, prevent
One PMOS PM1 is damaged because of overvoltage.Owing to the monomer voltage of new forms of energy lithium ion battery exists
Below 4.2V, in electrokinetic cell system is applied, changing need to be through the series connection ability of multiple batteries
Reach the voltage platform of application level, and each cell must be adopted by control circuit
Collection and control, often increase one-level series voltage the most some higher, for preventing the high pressure of high batteries
Be there is the risk punctured in the cell voltage of low joint number, add in every batteries consumption control circuit
Isolating diode, to strengthen the reliability of system and hidden qualitative.
The above, the only present invention preferably detailed description of the invention, but the protection model of the present invention
Enclosing and be not limited thereto, any those familiar with the art is in the skill that the invention discloses
In the range of art, the change that can readily occur in or replacement, all should contain in protection scope of the present invention
Within.Therefore, protection scope of the present invention should be as the criterion with scope of the claims.
Claims (8)
1. a new forms of energy dynamic lithium battery super low-power consumption control circuit, it is characterised in that: include,
Battery unit, is used for exporting electric energy；
Detector unit, is connected with described battery unit, for detecting the voltage of described battery unit,
Send detection structure to processing unit；
Processing unit, travels for vehicle and controls, receive the testing result of described detector unit；
Switch control unit, for controlling the break-make of described detection cell circuit.
A kind of new forms of energy dynamic lithium battery super low-power consumption the most according to claim 1 controls
Circuit, it is characterised in that: described switch control unit is set to intelligent switching control circuit, institute
State intelligent switching control circuit to be connected with described detector unit, be used for controlling described detector unit electricity
The break-make on road.
A kind of new forms of energy dynamic lithium battery super low-power consumption the most according to claim 2 controls
Circuit, it is characterised in that: described intelligent switching control circuit includes the first NMOS tube NM1,
First PMOS PM1；The grid of described first NMOS tube NM1 is connected with described processing unit,
The source electrode of described first NMOS tube NM1 is connected to the ground, the drain electrode of described first NMOS tube NM1
It is connected with the grid of described first PMOS PM1；The source electrode of described first PMOS PM1 with
The positive pole of described cell is connected, the drain electrode of described first PMOS PM1 and described voltage
Detector unit input is connected.
A kind of new forms of energy dynamic lithium battery super low-power consumption the most according to claim 3 controls
Circuit, it is characterised in that: also include the first resistance R1, the second resistance R2, the 3rd resistance R3,
4th resistance R4 and the first diode D1；Described first resistance R1 one end and processing unit phase
Even, the grid of the other end and the first NMOS tube NM1 is connected；One end of described second resistance R2
Being connected with the grid of the first NMOS tube NM1, the other end is connected to the ground；Described first diode
The negative pole of D1 is connected with the drain electrode of described first NMOS tube NM1, described first diode D1
Positive pole be connected with one end of described 3rd resistance R3；The other end of described 3rd resistance R3 with
The grid of described first PMOS PM1 is connected；One end of described 4th resistance R4 and described the
The grid of one PMOS PM1 is connected, the other end and described first of described 4th resistance R4
The source electrode of PMOS PM1 is connected.
A kind of new forms of energy dynamic lithium battery super low-power consumption the most according to claim 4 controls
Circuit, it is characterised in that: a described NOMS pipe NM1 is set to N-channel enhancement mode MOS
Pipe.
A kind of new forms of energy dynamic lithium battery super low-power consumption the most according to claim 5 controls
Circuit, it is characterised in that: described first PMOS PM1 is set to P-channel enhancement type MOS
Pipe.
A kind of new forms of energy dynamic lithium battery super low-power consumption the most according to claim 6 controls
Circuit, it is characterised in that: described first diode D1 is set to isolating diode.
8. surpass according to a kind of new forms of energy dynamic lithium battery described in claim 1 to 7 any one
Low power consumpting controling circuit, it is characterised in that: described battery unit is set to several cells
The set of cells being connected into, the corresponding described cell of described switch control unit is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610329165.2A CN105896665A (en) | 2016-05-17 | 2016-05-17 | Super-low power-consumption control circuit for new energy power lithium battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610329165.2A CN105896665A (en) | 2016-05-17 | 2016-05-17 | Super-low power-consumption control circuit for new energy power lithium battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105896665A true CN105896665A (en) | 2016-08-24 |
Family
ID=56716556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610329165.2A Pending CN105896665A (en) | 2016-05-17 | 2016-05-17 | Super-low power-consumption control circuit for new energy power lithium battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105896665A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107128191A (en) * | 2017-05-05 | 2017-09-05 | 郑州轻工业学院 | A kind of electric automobile lithium-ion-power cell group voltage synchronous Acquisition Circuit and its control method |
| CN107482728A (en) * | 2017-09-04 | 2017-12-15 | 东莞钜威动力技术有限公司 | The battery signal Acquisition Circuit and cell managing device of power-consumption balance |
| CN108808749A (en) * | 2017-04-26 | 2018-11-13 | 奥动新能源汽车科技有限公司 | Battery management system |
| CN110297188A (en) * | 2019-07-24 | 2019-10-01 | 国网河北省电力有限公司邢台供电分公司 | Monitored System of Industrial Storage Cell |
| WO2023108540A1 (en) * | 2021-12-16 | 2023-06-22 | 宁德时代新能源科技股份有限公司 | Voltage measurement circuit and method, and circuit board and control module |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102331561A (en) * | 2011-09-16 | 2012-01-25 | 深圳桑达国际电子器件有限公司 | Battery voltage detection circuit and battery management system |
| JP2014183682A (en) * | 2013-03-21 | 2014-09-29 | Seiko Epson Corp | Voltage detection circuit and electronic apparatus |
| CN205846755U (en) * | 2016-05-17 | 2016-12-28 | 福建万众百源实业有限公司 | A kind of new forms of energy dynamic lithium battery group super low-power consumption control circuit |
-
2016
- 2016-05-17 CN CN201610329165.2A patent/CN105896665A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102331561A (en) * | 2011-09-16 | 2012-01-25 | 深圳桑达国际电子器件有限公司 | Battery voltage detection circuit and battery management system |
| JP2014183682A (en) * | 2013-03-21 | 2014-09-29 | Seiko Epson Corp | Voltage detection circuit and electronic apparatus |
| CN205846755U (en) * | 2016-05-17 | 2016-12-28 | 福建万众百源实业有限公司 | A kind of new forms of energy dynamic lithium battery group super low-power consumption control circuit |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808749A (en) * | 2017-04-26 | 2018-11-13 | 奥动新能源汽车科技有限公司 | Battery management system |
| CN107128191A (en) * | 2017-05-05 | 2017-09-05 | 郑州轻工业学院 | A kind of electric automobile lithium-ion-power cell group voltage synchronous Acquisition Circuit and its control method |
| CN107482728A (en) * | 2017-09-04 | 2017-12-15 | 东莞钜威动力技术有限公司 | The battery signal Acquisition Circuit and cell managing device of power-consumption balance |
| CN110297188A (en) * | 2019-07-24 | 2019-10-01 | 国网河北省电力有限公司邢台供电分公司 | Monitored System of Industrial Storage Cell |
| CN110297188B (en) * | 2019-07-24 | 2021-12-10 | 国网河北省电力有限公司邢台供电分公司 | Storage battery monitoring system |
| WO2023108540A1 (en) * | 2021-12-16 | 2023-06-22 | 宁德时代新能源科技股份有限公司 | Voltage measurement circuit and method, and circuit board and control module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105896665A (en) | Super-low power-consumption control circuit for new energy power lithium battery pack | |
| CN104037926B (en) | A kind of embedded device multiple feed device and intelligent switch method thereof | |
| CN101552482B (en) | Charge and discharge control circuit and battery device | |
| KR101547005B1 (en) | Apparatus and method for estimating state of charging of battery | |
| CN105071453A (en) | Battery management system | |
| CN105356528A (en) | Battery management system | |
| CN102955134B (en) | A kind of online test method of accumulator health status and device | |
| CN110780210B (en) | Battery pack internal short circuit detection method and device and electric automobile | |
| CN105759221A (en) | Power battery group management system with internal resistance monitoring function | |
| CN103698713A (en) | Method for assessing SOH (state of health) of lithium ion battery | |
| CN104155609B (en) | A kind of maintenance-free lead accumulator lossless detection method and nondestructive testing instrument | |
| CN105553030A (en) | Uninterruptable power supply management system of lithium battery | |
| CN106443490A (en) | A fault diagnosis system for battery short-circuiting | |
| CN110780219B (en) | Battery pack internal short circuit detection method and device and electric automobile | |
| CN106042977A (en) | Electromobile power reduction control method and system based on battery cell open-circuit voltage | |
| CN203632319U (en) | Lithium battery charging/discharging management system | |
| CN207481815U (en) | Electric system above and below electric automobile high-voltage | |
| CN205846755U (en) | A kind of new forms of energy dynamic lithium battery group super low-power consumption control circuit | |
| CN103884985A (en) | Detection method of storage battery performance | |
| CN211239354U (en) | Main loop control circuit of energy storage equipment | |
| CN110780225B (en) | Battery pack internal short circuit detection method and device and electric automobile | |
| CN206894270U (en) | Battery management system | |
| CN104655973A (en) | Method and device for detecting battery module short circuit in UPS system | |
| CN107340480A (en) | A kind of intelligent automobile storage battery sensor | |
| CN211127198U (en) | Open-circuit follow current device for accumulator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160824 |