CN201594116U - Measuring device of battery internal resistance - Google Patents
Measuring device of battery internal resistance Download PDFInfo
- Publication number
- CN201594116U CN201594116U CN2009202610073U CN200920261007U CN201594116U CN 201594116 U CN201594116 U CN 201594116U CN 2009202610073 U CN2009202610073 U CN 2009202610073U CN 200920261007 U CN200920261007 U CN 200920261007U CN 201594116 U CN201594116 U CN 201594116U
- Authority
- CN
- China
- Prior art keywords
- switch
- module
- battery
- internal resistance
- cell
- 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.)
- Expired - Lifetime
Links
Images
Abstract
The utility model provides a measuring device of battery internal resistance, which comprises an alternating-current detection module, a direct-current detection module, a first switching module, a second switching module, a battery pack and a control module. The alternating-current detection module is used for detecting alternating-current voltage and alternating current of the battery pack according to connection of the first switching module and transmitting the alternating-current voltage and the alternating current of the battery pack to the control module; the direct-current detection module is used for detecting direct-current voltage and direct current of the battery pack according to connection of the second switching module and transmitting the direct-current voltage and the direct current of the battery pack to the control module; and the control module is used for controlling connection or disconnection of the first switching module and the second switching module and calculating the internal resistance of the battery pack according to signal values of the alternating-current detection module and the direct-current detection module. The measuring device of the battery internal resistance can simultaneously measure alternating-current internal resistance, direct-current internal resistance and polarization internal resistance of the battery pack, and is simple and convenient.
Description
Technical field
The utility model belongs to field of batteries, relates in particular to a kind of measurement mechanism of the internal resistance of cell.
Background technology
At present, the energy source of PHEV and electric motor car mainly is the power battery pack on the car, and what the power battery pack on the car generally adopted is the mode of being connected in series.The state deterioration of certain cell directly influences the capacity status of power battery pack integral body in power battery pack, the whole volume state that also is electric battery is by a certain or several the battery capacity decisions that deterioration state is the most serious in the system, and the internal resistance of cell is an important technology index weighing battery performance.The internal resistance of cell mainly comprises interchange internal resistance, polarization resistance and DC internal resistance, polarization resistance is that electrokinetic cell is under the situation of heavy-current discharge, the internal resistance that inside battery generation chemical reaction is produced, polarization resistance has important effect for the measurement of the SOC of electrokinetic cell, and the method for accumulator internal resistance test at present comprises direct-current discharge method and ac-current inject method etc.Direct-current discharge method concrete grammar is to produce a momentary load electric current by electric battery, measure the instantaneous variation of voltage on the battery electrode column then, according to calculating the internal resistance of cell is DC internal resistance, ac-current inject method then is the ac current source that adds a constant frequency at the battery two ends, detect the battery both end voltage then, and phase differential between the two, the internal resistance that just can obtain battery according to Ohm law is the interchange internal resistance of battery.But above-mentioned two kinds of methods only can detect the interchange internal resistance or the DC internal resistance of battery.
The utility model content
There is the only problem of energy measurement battery or DC internal resistance of apparatus for measuring battery internal resistance in the utility model for solving in the prior art, provide a kind of and can measure the apparatus for measuring battery internal resistance that battery exchanges internal resistance, DC internal resistance and polarization resistance simultaneously.
The utility model provides a kind of measurement mechanism of the internal resistance of cell, comprise first switch module, the second switch module, battery, be used for the detection module that exchanges according to the alternating voltage of the conduction detection battery of described first switch module and alternating current, be used for DC voltage and DC current direct current detection module according to the conduction detection battery of described second switch module, and the conducting or the disconnection and the control module of calculating the described internal resistance of cell according to the described signal value that exchanges detection module and direct current detection module that are used to control described first, second switch module;
Described interchange detection module is electrically connected with described first switch module and described control module respectively, described direct current detection module is electrically connected with described second switch module and described control module respectively, and described battery is electrically connected with first switch module and second switch module respectively.
The measurement mechanism of the internal resistance of cell that the utility model provides with than prior art, control the conducting and the disconnection of first switch module and second switch module by control module, detect the interchange internal resistance and the DC internal resistance of battery respectively, then by exchanging the polarization resistance that internal resistance and DC internal resistance calculate battery.
Description of drawings
Fig. 1 is the structured flowchart of a kind of embodiment of the measurement mechanism of the utility model internal resistance of cell;
Fig. 2 be the utility model internal resistance of cell measurement mechanism a kind of embodiment circuit diagram;
Fig. 3 is the process flow diagram of the measuring method of the utility model internal resistance of cell.
Embodiment
Clearer for technical matters, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
As shown in Figure 1, the utility model provides a kind of measurement mechanism of the internal resistance of cell, comprises exchanging detection module 4, direct current detection module 5, first switch module 2, second switch module 3, battery and control module 6; Described interchange detection module 4 is electrically connected with described first switch module 2 and described control module 6 respectively, described direct current detection module 5 is electrically connected with described second switch module 3 and described control module 6 respectively, and described electric battery 1 is electrically connected with first switch module 2 and second switch module 3 respectively;
Described interchange detection module 4 is used for according to the alternating voltage and the alternating current of the conduction detection battery of described first switch module 2 and sends to described control module;
Described direct current detection module 5 is used for according to the DC voltage and the DC current of the conduction detection battery of described second switch module 3 and sends to described control module;
Described control module 6, the internal resistance that is used to control the conducting of described first switch module 2 and described second switch module 3 or disconnection and calculates described electric battery 1 according to the described signal value that exchanges detection module 4 and described direct current detection module 5.
Further improve, described battery can be a cell, can be electric battery 1 also, and the battery in the present embodiment is an electric battery 1, and described electric battery 1 comprises at least two cells.
Further improve, described interchange detection module 4 comprises driving source, is used to detect the alternating voltage detecting unit 42 of described electric battery alternating voltage, and the alternating current detecting unit that is used to detect the alternating current of electric battery;
Described driving source constitutes the loop by described first switch module 2 and described electric battery 1;
Described alternating current detecting unit is positioned on the loop of described driving source and described electric battery formation;
Described alternating voltage detecting unit 42 is electrically connected with described electric battery 1 by described first switch module 2.
Further improve, described first switch module 2 comprises first switch 21 and second switch 22, described first switch 21 is electrically connected with described electric battery 1 and described driving source respectively, and described second switch 22 is electrically connected with described electric battery 1 and described alternating voltage detecting unit 42 respectively;
Described first switch 21 is used for according to the control signal of control module 6 so that described driving source and described electric battery 1 constitute the loop;
Described second switch 22 is used for according to the control signal of control module 6 so that described alternating voltage detecting unit 42 detects the voltage of described electric battery.
Further improve, described alternating current detecting unit is a sampling resistor 43, and described alternating voltage detecting unit also is used to detect the voltage of sampling resistor 43 and sends to described control module 6.By detecting the voltage U 3 at sampling resistor two ends, and the resistance R3 of sampling resistor 43, calculate the size of alternating current I1.Certainly the alternating current detecting unit also adopts the current Hall sensor that alternating current is directly detected, but since smaller by driving source to the electric current meeting that electric battery encourages, not high with the detected current precision of electric current Hall element.
Be ac-excited source under the described driving source preferable case, control signal by control module 6, make first switch 21 and second switch 22 conductings, described alternating voltage detecting unit 42 detects the voltage U 1 of described electric battery 1, described alternating current detecting unit detects the electric current I 1 of described electric battery 1, just can calculate the interchange internal resistance R1 of battery resistance 1.
Further improve, direct current detection module 5 comprises large current load 51, is used to detect the DC voltage detecting unit 52 of electric battery 1 DC voltage, and the direct current detection unit that is used to detect described electric battery 1 DC current;
Described large current load 51 constitutes the loop by described second switch module 3 and described electric battery 1;
Described direct current detection unit is positioned on the loop of described large current load 51 and described electric battery 1 formation;
Described DC voltage detecting unit 52 is electrically connected with described electric battery 1 by described second switch module 3.Under the preferable case: described direct current detection unit is a current Hall sensor 53.
Further improve, described second switch module 3 comprises the 3rd switch 31 and the 4th switch 32, described the 3rd switch 31 is electrically connected with described large current load 51 and described electric battery 1 respectively, and described the 4th switch 32 is electrically connected with described DC voltage detecting unit 52 and described electric battery 1 respectively;
Described the 3rd switch 31 is used for according to the control signal of described control module 6 so that described large current load 51 and described electric battery 1 constitute the loop;
Described the 4th switch 32 is used for according to the control signal of described control module 6 so that described DC voltage detecting unit 52 detects the voltage of described electric battery 1.
Add large current load 51 by two ends in described electric battery 1, when 31 conductings of the 3rd switch, described large current load 51 constitutes the loop with described electric battery 1, by the described direct current detection unit on the loop that is positioned at described large current load 51 and described electric battery 1 formation, detect the DC current I2 of electric battery 1, when 32 conductings of the 4th switch, DC voltage detecting unit 52 detects the DC voltage U2 of electric battery 1, just can calculate the DC internal resistance R2 of battery resistance 1.
Further improve, described control module 6 is the LPC2194 single-chip microcomputer.Type to single-chip microcomputer in the utility model is less demanding, as long as this monolithic function is used to control the conducting or the disconnection of first switch module 2 and second switch module 3, and get final product according to interchange internal resistance R1, DC internal resistance R2 and the polarization resistance R that detected signal value calculates electric battery 1.
Further improve, described first switch 21, second switch 22, the 3rd switch 31 and the 4th switch 32 are gating switch, according to the control signal conducting or the disconnection of control module 6.
Further improve, described DC voltage detecting unit 52 and alternating voltage detecting unit 42 are for well known to a person skilled in the art voltage detecting circuit.
Wherein, Fig. 2 is the circuit diagram of the measurement mechanism of a kind of embodiment internal resistance of cell of the utility model, the measurement mechanism of the internal resistance of cell comprises described driving source, transistor, power resistor 8, sampling resistor 43, first switch 21, second switch 22 and described electric battery 1, electric battery 1 is electrically connected with second switch 22 input ends, the output terminal of second switch 22 is electrically connected with alternating voltage detecting unit 42, and the control end of described second switch 22 is electrically connected with described control module 6, and alternating voltage detecting unit 42 is electrically connected with described control module 6 and sampling resistor 43 respectively.21 conductings of described control module 6 controls first switch, described driving source, transistor, power resistor 8, sampling resistor 43, first switch 21 constitutes the loop with described electric battery 1, driving source described in the present embodiment is ac-excited source 7, and ac-excited signal can be injected by transistorized control end in ac-excited source 7, will produce a sinusoidal excitation electric current in the whole like this loop, sampling resistor 43 two ends will produce a driving voltage U3, and the electric battery two ends also can produce a driving voltage U1.Described control module 6 control second switch unit 22 conductings, alternating voltage detecting unit 42 detects the voltage U 1 of electric battery 1 and the voltage U 3 of sampling resistor 43.The measurement mechanism of the internal resistance of cell also comprises large current load 51, the 3rd switch 31, the 4th switch 32, current Hall sensor 53 and DC voltage detecting unit 52, the control end of described the 3rd switch 31 and the 4th switch 32 is electrically connected with control module 6 respectively, when 31 conductings of control module 6 controls the 3rd switch, described large current load 51, current Hall sensor 53 and electric battery 1 constitute the loop, produce a momentary load electric current on the loop, the DC current I2 of current Hall sensor electric battery 1, the voltage at electric battery 1 two ends also can change, when 32 conductings of control module 6 controls the 4th switch, the DC voltage detecting unit detects the DC voltage U2 of electric battery 1.
The measuring method of this internal resistance of cell may further comprise the steps:
2 conductings of control module 6 controls first switch module;
Exchanging detection module 4 detects the alternating voltage and the alternating current of electric battery 1 and sends to described control module 6;
Described first switch module 2 of control module 6 controls disconnects, 3 conductings of control second switch module;
Direct current detection module 5 detects the DC voltage and the DC current of described electric battery 1 and sends to described control module 6;
The internal resistance that described control module 6 is calculated described electric battery 1 according to the signal value of described interchange detection module 4 and described direct current detection module 5.
As shown in Figure 3, be the process flow diagram of this measuring method one embodiment, the concrete steps of this measuring method are as follows:
The S01 step, control module 6 control first switch 21 and second switch 22 conductings;
S02 step, alternating voltage detecting unit 42 detect the voltage U 1 of electric battery 1 and the voltage U 3 of sampling resistor 43, and send to control module 6;
The S03 step, control module 6 control first switches 21 and second switch 22 disconnect, and control the 3rd switch 31 and 32 conductings of the 4th switch;
The S04 step, DC voltage detecting unit 52 detects the DC voltage U2 of electric battery 1, and current Hall sensor 53 detects the DC current I2 of electric battery 1, and sends to control module 6;
The S05 step, alternating current I1=U3/R3 exchanges internal resistance R1=U1/I1;
The S06 step, DC internal resistance R2=U2/I2;
The S07 step, polarization resistance R=R1-R2, EOP (end of program).
Order for above-mentioned S02 step and S04 step can not be changed, and promptly can not measure the DC voltage and the DC current of electric battery 1 earlier, then measures the alternating voltage and the alternating current of electric battery 1 again.Because electric battery 1 when measuring DC voltage and DC current, has very big electric current through electric battery 1, corresponding variation all can take place in the temperature of electric battery, internal resistance, and then the alternating voltage and the alternating current of the electric battery of measuring again 1 are also inaccurate.
The measurement mechanism of the internal resistance of cell of the present utility model, conducting and disconnection by control module 1 control first switch module 2 and second switch module 3, can detect the interchange internal resistance and the DC internal resistance of electric battery 1 respectively, by exchanging the polarization resistance that internal resistance and DC internal resistance calculate electric battery 1, this measurement mechanism and measuring method are simple and convenient then.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. the measurement mechanism of an internal resistance of cell, it is characterized in that: comprise first switch module, the second switch module, battery, be used for the detection module that exchanges according to the alternating voltage of the conduction detection battery of described first switch module and alternating current, be used for DC voltage and DC current direct current detection module according to the conduction detection battery of described second switch module, and the conducting or the disconnection and the control module of calculating the described internal resistance of cell according to the described signal value that exchanges detection module and direct current detection module that are used to control described first, second switch module;
Described interchange detection module is electrically connected with described first switch module and described control module respectively, described direct current detection module is electrically connected with described second switch module and described control module respectively, and described battery is electrically connected with first switch module and second switch module respectively.
2. the measurement mechanism of the internal resistance of cell as claimed in claim 1, it is characterized in that: described interchange detection module comprises driving source, be used to detect the alternating voltage detecting unit of described battery alternating voltage, and the alternating current detecting unit that is used to detect the alternating current of electric battery;
Described driving source constitutes the loop by described first switch module and described battery;
Described alternating current detecting unit is positioned on the loop of described driving source and described battery formation;
Described alternating voltage detecting unit is electrically connected with described battery by described first switch module.
3. the measurement mechanism of the internal resistance of cell as claimed in claim 2, it is characterized in that: described first switch module comprises and being used for according to the control signal of described control module so that described driving source and described battery constitute first switch in loop, and is used for control signal according to described control module so that described alternating voltage detecting unit detects the second switch of described cell voltage;
Described first switch is electrically connected with described battery and described driving source respectively, and described second switch is electrically connected with described battery and described alternating voltage detecting unit respectively.
4. the measurement mechanism of the internal resistance of cell as claimed in claim 1, it is characterized in that: the direct current detection module comprises large current load, be used to detect the DC voltage detecting unit of battery DC voltage, and the direct current detection unit that is used to detect described battery DC current;
Described large current load constitutes the loop by described second switch module and described battery;
Described direct current detection unit is positioned on the loop of described large current load and described battery formation;
Described DC voltage detecting unit is electrically connected with described battery by described second switch module.
5. the measurement mechanism of the internal resistance of cell as claimed in claim 4, it is characterized in that: described second switch module comprises and being used for according to the control signal of described control module so that described large current load and described battery constitute the 3rd switch in loop, and is used for control signal according to described control module so that described DC voltage detecting unit detects the 4th switch of described cell voltage;
Described the 3rd switch is electrically connected with described large current load and described electric battery respectively, and described the 4th switch is electrically connected with described DC voltage detecting unit and described battery respectively.
6. the measurement mechanism of the internal resistance of cell as claimed in claim 4, it is characterized in that: described direct current detection unit is the current Hall sensor.
7. the measurement mechanism of the internal resistance of cell as claimed in claim 2, it is characterized in that: described alternating current detecting unit is a sampling resistor, described alternating voltage detecting unit also is used to detect the voltage of sampling resistor and sends to described control module.
8. the measurement mechanism of the internal resistance of cell as claimed in claim 1, it is characterized in that: described control module is the LPC2194 single-chip microcomputer.
9. the measurement mechanism of the internal resistance of cell as claimed in claim 3 is characterized in that: first switch and second switch are for according to the control signal conducting of control module or the gating switch of disconnection.
10. the measurement mechanism of the internal resistance of cell as claimed in claim 5 is characterized in that: the 3rd switch and the 4th switch are for according to the control signal conducting of control module or the gating switch of disconnection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202610073U CN201594116U (en) | 2009-11-30 | 2009-11-30 | Measuring device of battery internal resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202610073U CN201594116U (en) | 2009-11-30 | 2009-11-30 | Measuring device of battery internal resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201594116U true CN201594116U (en) | 2010-09-29 |
Family
ID=42776184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202610073U Expired - Lifetime CN201594116U (en) | 2009-11-30 | 2009-11-30 | Measuring device of battery internal resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201594116U (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063950A (en) * | 2012-12-19 | 2013-04-24 | 华中科技大学 | Test system and test method for electrical properties of memristor component unit |
| CN103261898A (en) * | 2010-12-10 | 2013-08-21 | 日产自动车株式会社 | Layered battery internal resistance measuring apparatus |
| CN104035040A (en) * | 2014-06-05 | 2014-09-10 | 嘉兴市恒欣电力建设有限公司 | Tramegger battery detection device |
| CN104034967A (en) * | 2014-06-05 | 2014-09-10 | 浙江工业大学 | Method for rapidly and accurately detecting internal resistance of secondary battery |
| CN104215912A (en) * | 2014-09-04 | 2014-12-17 | 奇瑞汽车股份有限公司 | Storage battery state detecting system and storage battery state detecting method |
| CN104950181A (en) * | 2014-03-31 | 2015-09-30 | 上海汽车集团股份有限公司 | Storage battery internal resistance measuring method based on change of charging current and device thereof |
| CN105277791A (en) * | 2015-11-23 | 2016-01-27 | 上海电力学院 | Method for on-line detection of internal resistance of a storage battery by performing low-direct-current discharge twice |
| CN105620291A (en) * | 2015-12-25 | 2016-06-01 | 北京新能源汽车股份有限公司 | Battery voltage detecting method, equipment and device and battery management system |
| CN106093799A (en) * | 2016-08-24 | 2016-11-09 | 上海金智晟东电力科技有限公司 | The accurate measuring systems of a kind of distribution terminal battery performance and method |
| CN106199431A (en) * | 2014-12-18 | 2016-12-07 | 神华集团有限责任公司 | A kind of exchange monitoring method based on battery electron module and system |
| JP2017150925A (en) * | 2016-02-24 | 2017-08-31 | Ntn株式会社 | Secondary battery deterioration determination device |
| CN108124465A (en) * | 2017-04-17 | 2018-06-05 | 深圳和而泰智能控制股份有限公司 | A kind of monitoring and control method and system of battery load capacity |
| CN109856557A (en) * | 2019-01-21 | 2019-06-07 | 合肥国轩高科动力能源有限公司 | A kind of on-line monitoring lithium ion battery electrochemical impedance test method |
| CN113740751A (en) * | 2020-05-27 | 2021-12-03 | 台达电子企业管理（上海）有限公司 | Battery internal resistance detection device and method |
| CN113805091A (en) * | 2020-05-27 | 2021-12-17 | 比亚迪半导体股份有限公司 | Battery pack monitoring device, management system and vehicle |
| CN116018570A (en) * | 2020-08-06 | 2023-04-25 | 三菱电机楼宇解决方案株式会社 | Control device for autonomous mobile body, and autonomous mobile body |
| WO2023207404A1 (en) * | 2022-04-26 | 2023-11-02 | 深圳市道通科技股份有限公司 | Method for measuring internal resistance of battery, and circuit for measuring internal resistance of battery |
-
2009
- 2009-11-30 CN CN2009202610073U patent/CN201594116U/en not_active Expired - Lifetime
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103261898A (en) * | 2010-12-10 | 2013-08-21 | 日产自动车株式会社 | Layered battery internal resistance measuring apparatus |
| CN103261898B (en) * | 2010-12-10 | 2015-04-08 | 日产自动车株式会社 | Layered battery internal resistance measuring apparatus and measuring method |
| CN103063950B (en) * | 2012-12-19 | 2015-05-20 | 华中科技大学 | Test method for electrical properties of memristor component unit |
| CN103063950A (en) * | 2012-12-19 | 2013-04-24 | 华中科技大学 | Test system and test method for electrical properties of memristor component unit |
| CN104950181A (en) * | 2014-03-31 | 2015-09-30 | 上海汽车集团股份有限公司 | Storage battery internal resistance measuring method based on change of charging current and device thereof |
| CN104950181B (en) * | 2014-03-31 | 2018-03-23 | 上海汽车集团股份有限公司 | Accumulator internal resistance measurement method and device based on charging current change |
| CN104035040A (en) * | 2014-06-05 | 2014-09-10 | 嘉兴市恒欣电力建设有限公司 | Tramegger battery detection device |
| CN104034967A (en) * | 2014-06-05 | 2014-09-10 | 浙江工业大学 | Method for rapidly and accurately detecting internal resistance of secondary battery |
| CN104215912B (en) * | 2014-09-04 | 2017-09-08 | 奇瑞汽车股份有限公司 | Battery condition detection system and method |
| CN104215912A (en) * | 2014-09-04 | 2014-12-17 | 奇瑞汽车股份有限公司 | Storage battery state detecting system and storage battery state detecting method |
| CN106199431B (en) * | 2014-12-18 | 2018-12-28 | 神华集团有限责任公司 | A kind of exchange monitoring method and system based on battery electron module |
| CN106199431A (en) * | 2014-12-18 | 2016-12-07 | 神华集团有限责任公司 | A kind of exchange monitoring method based on battery electron module and system |
| CN105277791A (en) * | 2015-11-23 | 2016-01-27 | 上海电力学院 | Method for on-line detection of internal resistance of a storage battery by performing low-direct-current discharge twice |
| CN105277791B (en) * | 2015-11-23 | 2018-01-26 | 上海电力学院 | DC low current secondary discharge accumulator internal resistance online test method |
| CN105620291B (en) * | 2015-12-25 | 2018-03-23 | 北京新能源汽车股份有限公司 | Detect method, unit and the battery management system of cell voltage |
| CN105620291A (en) * | 2015-12-25 | 2016-06-01 | 北京新能源汽车股份有限公司 | Battery voltage detecting method, equipment and device and battery management system |
| JP2017150925A (en) * | 2016-02-24 | 2017-08-31 | Ntn株式会社 | Secondary battery deterioration determination device |
| CN106093799A (en) * | 2016-08-24 | 2016-11-09 | 上海金智晟东电力科技有限公司 | The accurate measuring systems of a kind of distribution terminal battery performance and method |
| CN108124465A (en) * | 2017-04-17 | 2018-06-05 | 深圳和而泰智能控制股份有限公司 | A kind of monitoring and control method and system of battery load capacity |
| CN108124465B (en) * | 2017-04-17 | 2019-12-20 | 深圳和而泰智能控制股份有限公司 | Monitoring control method and system for battery loading capacity |
| CN109856557A (en) * | 2019-01-21 | 2019-06-07 | 合肥国轩高科动力能源有限公司 | A kind of on-line monitoring lithium ion battery electrochemical impedance test method |
| CN109856557B (en) * | 2019-01-21 | 2021-07-13 | 合肥国轩高科动力能源有限公司 | On-line monitoring lithium ion battery electrochemical impedance test method |
| CN113740751A (en) * | 2020-05-27 | 2021-12-03 | 台达电子企业管理（上海）有限公司 | Battery internal resistance detection device and method |
| CN113805091A (en) * | 2020-05-27 | 2021-12-17 | 比亚迪半导体股份有限公司 | Battery pack monitoring device, management system and vehicle |
| CN116018570A (en) * | 2020-08-06 | 2023-04-25 | 三菱电机楼宇解决方案株式会社 | Control device for autonomous mobile body, and autonomous mobile body |
| WO2023207404A1 (en) * | 2022-04-26 | 2023-11-02 | 深圳市道通科技股份有限公司 | Method for measuring internal resistance of battery, and circuit for measuring internal resistance of battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201594116U (en) | Measuring device of battery internal resistance | |
| CN105807230A (en) | Storage battery residual capacity and health state rapid detection method and device | |
| CN102393489B (en) | On-line monitoring control method of electric car power cell high voltage loop resistor and apparatus thereof | |
| CN105429226A (en) | High-capacity charging-discharging battery management system | |
| CN202854303U (en) | Cell internal resistance measure apparatus | |
| CN105322597B (en) | A kind of charging circuit and mobile terminal | |
| CN201100864Y (en) | Lithium battery activation detection table | |
| CN210051820U (en) | Insulation detection device and battery management system | |
| CN103063927A (en) | Earth impedance detecting circuit and method of photovoltaic inverter | |
| CN201397381Y (en) | Novel voltage internal resistance testing device for lithium ion battery | |
| CN102074984B (en) | Mobile terminal for detecting electric quantity of battery on line and detection method thereof | |
| CN103026245A (en) | Voltage measuring circuit and method | |
| CN103138025B (en) | Electric leakage detection circuit and battery system | |
| CN204068314U (en) | A kind of electri forklift quick charger | |
| CN201293825Y (en) | Device for testing battery internal resistance | |
| CN203995737U (en) | A kind of electric automobile high-voltage switching arrangement | |
| CN205246835U (en) | Lithium battery power management system based on DS2788 | |
| CN202330670U (en) | Insulation detection circuit for power battery system of electric vehicle | |
| CN102565708A (en) | Battery capacity detection system | |
| CN207752123U (en) | Single line detects the circuit of double cell series voltage | |
| CN202948104U (en) | Insulation detection circuit for battery box | |
| CN203117397U (en) | Battery leakage detection circuit | |
| CN206498211U (en) | A kind of battery control circuit | |
| CN104635119A (en) | Power system insulation monitoring method and system | |
| CN212932785U (en) | Battery test bed capable of automatically measuring insulation resistance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100929 |