CN110208715A - A kind of method and automobile batteries management system measuring automobile batteries packet state of charge - Google Patents
A kind of method and automobile batteries management system measuring automobile batteries packet state of charge Download PDFInfo
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- CN110208715A CN110208715A CN201910589480.2A CN201910589480A CN110208715A CN 110208715 A CN110208715 A CN 110208715A CN 201910589480 A CN201910589480 A CN 201910589480A CN 110208715 A CN110208715 A CN 110208715A
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- current divider
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- resistance
- bms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
-
- 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]
- G01R31/385—Arrangements for measuring battery or accumulator variables
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Sustainable Energy (AREA)
- Power Engineering (AREA)
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- Secondary Cells (AREA)
- Tests Of Electric Status Of Batteries (AREA)
Abstract
The invention discloses a kind of method for measuring automobile batteries packet state of charge, specifically: BMS controller controls controllable switch closure, allows the Calibrated current I that constant-current source is constant to current divider0, meanwhile, BMS testing current module detects the voltage U at current divider resistance both ends0, temperature sensor detection current divider resistance temperature T0；Calculate temperature T0When, current divider resistanceCalculated result is recorded in BMS controller；The temperature and resistance of a series of current divider resistance can be obtained by repeating the above steps；When automobile main relay is closed, after accessing high pressure, BMS testing current module detects the voltage U at current divider resistance both endst, temperature sensor record temperature Tt, the electric current I of current divider resistance at this time can be calculated according to the data that BMS controller storest.The present invention solve the problems, such as can not precise measurement electric current, realize the accurate estimation to battery state of charge SOC.
Description
Technical field
The present invention relates to technical field of new energy more particularly to a kind of methods for measuring automobile batteries packet state of charge
And automobile batteries management system.
Background technique
Lithium battery has been widely used for new-energy automobile.To battery state of charge SOC (Status of Capacity)
Estimation, be battery management system BMS (Battery Management System) most important component part.But due to
Battery structure is complicated, and the state-of-charge of battery is influenced by factors such as discharge current, internal temperature of battery, self discharge, agings, made
The estimation for obtaining SOC is difficult.
Currently, the most commonly used is Ah integration method, formula for the evaluation method of SOC are as follows:
Wherein, CNFor battery rated capacity, I is battery current, and η is charge-discharge electric power.
In order to estimate SOC with Ah integration method, it is necessary to precise measurement electric current.In other words, in this SOC Measurement Algorithm, point
The resistance accuracy requirement for flowing device is relatively high.
In fact, following reason directly influences current measurement precision, so as to cause the deviation of SOC:
1) it in resistance production process, once completing resistance trimming in production line, is considered as its resistance value and is no longer sent out in life cycle
Changing.But the current divider resistance of on-vehicle battery is changed with temperature change, is changed with time aging.
2) currently, all improving the survey of SOC by temperature model and Ageing Model using the SOC Measurement Algorithm of current integration
Try precision.This Ageing Model is in the process of development, to be tested by a small amount of product exemplar.That is, obtained with test
Material aging curve replaces the aging curves of all current divider resistance in the product life cycle.In fact, in the actual environment,
The resistance value aging curve of each current divider can't be completely consistent with Experimental Calibration curve.Therefore, such test method can not
The resistance value that can be accurately obtained in each current divider resistance ageing process, it is also not possible to temperature drift and reality caused by obtaining because of aging
The variation of resistance value, in this way measurement certainly exist error.
Then, the aging of most of battery management system BMS negligible resistances usually in life cycle.
Summary of the invention
Of the existing technology in order to solve the problems, such as, the invention proposes a kind of sides for measuring automobile batteries packet state of charge
Method and automobile batteries management system.
The technical scheme adopted by the invention is that:
A method of current divider is accessed power battery pack trunk roads, into one by measurement automobile batteries packet state of charge
Step includes:
S1: when automobile starting, automobile carries out self-test；
S2: during automobile self-test, main relay is not closed, and BMS controller allows constant-current source by control controllable switch closure
To current divider one constant Calibrated current I0, meanwhile, BMS testing current module also detects the voltage U at current divider resistance both ends0,
Temperature sensor detects current divider resistance temperature T0；
S3: temperature T is calculated0When, current divider resistanceAnd calculated result is recorded in BMS controller；
S4: when automobile main relay closure, according to step S1 to step S3, will be stored in BMS controller after accessing high pressure
The temperature of current divider resistance calculated with resistance, obtain the real-time temperature drift of current divider resistance:
Wherein, R1It is current divider in temperature T1The measurement resistance at moment, R2It is current divider in temperature T2The measurement electricity at moment
Resistance；
S5: according to the temperature and resistance of temperature drift formula or the current divider resistance of BMS control storage, can be appointed
The current divider resistance value R at one temperature momentt；
The voltage U at S6:BMS testing current module detection current divider resistance both endst, temperature sensor record temperature
Tt, calculate electric current I at this timet:
S7: the current divider resistance current flow I measured according to step S6tBattery pack state of charge can be calculated
Preferably, being stored in the temperature of the current divider resistance of BMS controller and the survey of resistance described in step S4
Amount process further comprises:
S41: after automobile flameout disconnects main relay, BMS controller controls controllable switch closure, allows constant-current source to current divider
Constant Calibrated current I is provided3, meanwhile, BMS testing current module detects the voltage U at current divider resistance both ends3, temperature sensor
Record the temperature T on current divider3；
S42: temperature T is calculated3When, current divider resistanceAnd calculated result is recorded in BMS controller；
S43: when separator resistance returns to normal temperature state from high load capacity working condition, keeping enough frequency acquisitions, according to
Step S41 obtains complete " temperature-resistance " table to step S42 method.
Preferably, more measurements of temperature drift TCR are averaged in step S4.
Preferably, the temperature of the current divider resistance of BMS controller and resistance real-time update.
A kind of automobile batteries management system, the method for implementing a kind of above-mentioned measurement automobile batteries packet state of charge,
Including current divider, BMS testing current module, temperature sensor and BMS controller, current divider accesses power battery pack trunk roads,
BMS testing current module is used to one constant Calibrated current of current divider, detect the voltage at current divider resistance both ends, and temperature passes
Sensor is for detecting current divider resistance temperature, and BMS controller is for controlling the work of BMS testing current module, storage BMS electric current survey
The detection and calculated result of die trial block.
Preferably, current divider resistive voltage test point is in a left side using resistance center as middle line at current divider resistive edge both ends
Right symmetric arrays.
Preferably, temperature sensor is located at as far as possible close to current divider resistive surface and center.
Compared with prior art, the beneficial effects of the present invention are:
Present invention on-line proving current divider actual resistance in life cycle solves to divide to promote current detection accuracy
Flow the problem that the resistance value in device resistance ageing process cannot be accurate；To automobile in whole life cycle battery discharge, charging, function
Rate calculates, SOC is calculated etc., as long as can solve the influence of aging bring with current related test and calculating.
Certainly, it implements any of the products of the present invention and does not necessarily require achieving all the advantages described above at the same time.
Detailed description of the invention
Fig. 1 is BMS testing current flow chart of the invention；
Fig. 2 is automobile batteries management system schematic diagram of the invention；
Fig. 3 is the setting schematic diagram of the current divider test point of one embodiment of the invention；
Fig. 4 is the setting schematic diagram of the current divider test point of one embodiment of the invention；
Fig. 5 is the setting schematic diagram of the current divider test point of one embodiment of the invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to each reality of the invention
The mode of applying is explained in detail.
Embodiment one
With reference to Fig. 1 and Fig. 2, a method of current divider is accessed power battery pack by measurement automobile batteries packet state of charge
Trunk roads, further comprising:
S1: when automobile starting, automobile carries out self-test；
S2: during automobile self-test, main relay is not closed, and BMS controller allows constant-current source by control controllable switch closure
To current divider one constant Calibrated current I0, meanwhile, BMS testing current module also detects the voltage U at current divider resistance both ends0,
Temperature sensor detects current divider resistance temperature T0；
S3: temperature T is calculated0When, current divider resistanceAnd calculated result is recorded in BMS controller；
S4: when automobile main relay closure, according to step S1 to step S3, will be stored in BMS controller after accessing high pressure
The temperature of current divider resistance calculated with resistance, obtain the real-time temperature drift of current divider resistance:
Wherein, R1It is current divider in temperature T1The measurement resistance at moment, R2It is current divider in temperature T2The measurement electricity at moment
Resistance；
S5: according to the temperature and resistance of temperature drift formula or the current divider resistance of BMS control storage, can be appointed
The current divider resistance value R at one temperature momentt；
The voltage U at S6:BMS testing current module detection current divider resistance both endst, temperature sensor record temperature
Tt, calculate electric current I at this timet:
S7: the current divider resistance current flow I measured according to step S6tBattery pack state of charge can be calculated
As can be seen calculated from the above process, R at this timetIt is (the R by constantly accumulating in real time in circuit beforet′、Tt′)
(t ' expression test the R calculatedtAny time before).That is, according to the (R of recordt′、Tt′) calculating, both disappeared
In addition to the influence of temperature, the influence of resistance aging is also eliminated, then electric current is namely accurately worth.And the accurate survey of electric current
Amount is the instantaneous power for accurately calculating battery in real time, mean power, efficiency for charge-discharge, battery SOC and accurate control battery longevity
Life provides condition.
In the present embodiment, in step S2, during not the time of resistance test can only be automobile self-test, it is also possible to automobile
After lower electricity, after unlock, after charging etc., guarantee as far as possible in each different temperature range sampling, it is ensured that the accuracy of resistance temperature drift.
As one embodiment, the temperature and resistance of the current divider resistance of BMS controller are stored in described in step S4
The measurement process of resistance value further comprises: S41: after automobile flameout disconnects main relay, BMS controller control controllable switch is closed
It closes, constant-current source is allowed to provide constant Calibrated current I to current divider3, meanwhile, BMS testing current module detects current divider resistance two
The voltage U at end3, temperature sensor record current divider on temperature T3；S42: temperature T is calculated3When, current divider resistance
And calculated result is recorded in BMS controller；S43: it when current divider resistance returns to normal temperature state from high load capacity working condition, protects
Enough frequency acquisitions are held, obtain complete " temperature-resistance " table according to step S41 to step S42 method.
The present embodiment is by after automobile flameout, and current divider returns to normal temperature state from high load capacity working condition, so as to
It obtains than more complete " temperature-resistance " table.Two group informations are selected from " temperature-resistance " table, then available current divider electricity
The temperature drift formula of resistance.Certainly, if keeping enough frequency acquisitions, accurate and complete " temperature-resistance " table can be obtained,
When measuring electric current device resistance temperature, so that it may know the resistance information of electric current device.It is sampled not after automobile flameout
It is necessary condition of the invention, can be sampled under other conditions, is as long as obtaining two groups of " temperature-resistance " information
Can, because current divider resistance its temperature drift in normal range of temperature is linear change.
As one embodiment, in step S4, more measurements of temperature drift TCR are averaged.
As one embodiment, the temperature Yu resistance real-time update of the current divider resistance of BMS controller.The present embodiment
Real-time update be not necessarily meant to refer at every moment update, but then triggered according to some cycles or when reaching certain condition
It is updated after update mechanism, such as each automobile flameout.
Embodiment two
With reference to Fig. 1 and Fig. 2, a kind of automobile batteries management system, for implementing a kind of measurement automobile described in embodiment one
The method of battery pack state of charge, including current divider, BMS testing current module, temperature sensor and BMS controller, current divider
Power battery pack trunk roads are accessed, BMS testing current module is used for one constant Calibrated current of current divider, detection current divider
The voltage at resistance both ends, temperature sensor is for detecting current divider resistance temperature, and BMS controller is for controlling BMS testing current
Module work, the detection and calculated result of storage BMS testing current module.
As shown in Fig. 2, several black dots on current divider are several test points of current divider.Current divider resistive voltage is surveyed
Pilot is at current divider resistive edge both ends, using resistance center as middle line, symmetrical arrangement.Calibration with current signal point can be with being intended to minute
Flow device resistance both ends.Temperature sensor improves temperature measurement accuracy as close as possible to resistive surface and resistance center.Meet
The current divider test point for stating requirement has very much.
As shown in Figure 3 and Figure 4, when main relay disconnects, the setting of two kinds of possible current divider test points, they are only shown
Current divider and BMS testing current module.
As shown in figure 5, a kind of setting of possible current divider test point, they show only point when main relay is closed
Flow device, PDU (relay) and BMS testing current module.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of protection of the claims
Subject to.
Claims (7)
1. a kind of method for measuring automobile batteries packet state of charge, which is characterized in that current divider is accessed power battery pack trunk
Road, further comprising:
S1: when automobile starting, automobile carries out self-test；
S2: during automobile self-test, main relay is not closed, BMS controller by control controllable switch closure, allow constant-current source to point
Flow device one constant Calibrated current I0, meanwhile, BMS testing current module also detects the voltage U at current divider resistance both ends0, temperature
Sensor detects current divider resistance temperature T0；
S3: temperature T is calculated0When, current divider resistanceAnd calculated result is recorded in BMS controller；
S4: when automobile main relay is closed, after accessing high pressure, according to step S1 to step S3, point of BMS controller will be stored in
The temperature of stream device resistance is calculated with resistance, obtains the real-time temperature drift of current divider resistance:
Wherein, R1It is current divider in temperature T1The measurement resistance at moment, R2It is current divider in temperature T2The measurement resistance at moment:
S5: according to the temperature and resistance of temperature drift formula or the current divider resistance of BMS control storage, any temperature can be obtained
Spend the current divider resistance value R at momentt；
The voltage U at S6:BMS testing current module detection current divider resistance both endst, temperature sensor record temperature Tt, meter
Calculate electric current I at this timet:
S7: the current divider resistance current flow I measured according to step S6tBattery pack state of charge can be calculated
2. a kind of method for measuring automobile batteries packet state of charge according to claim 1, which is characterized in that in step S4
The temperature of current divider resistance for being stored in BMS controller and the measurement process of resistance further comprise:
S41: after automobile flameout disconnects main relay, BMS controller controls controllable switch closure, and constant-current source is allowed to provide to current divider
Constant Calibrated current I3, meanwhile, BMS testing current module detects the voltage U at current divider resistance both ends3, temperature sensor record
Temperature T on current divider3；
S42: temperature T is calculated3When, current divider resistanceAnd calculated result is recorded in BMS controller；
S43: when separator resistance returns to normal temperature state from high load capacity working condition, enough frequency acquisitions are kept, according to step
S41 obtains complete " temperature-resistance " table to step S42 method.
3. a kind of method for measuring automobile batteries packet state of charge according to claim 1, which is characterized in that step S4
In, more measurements of temperature drift TCR are averaged.
4. a kind of method for measuring automobile batteries packet state of charge according to claim 2, which is characterized in that BMS control
The temperature and resistance real-time update of the current divider resistance of device.
5. a kind of automobile batteries management system, for implementing one kind as described in any one of claim 1 to claim 4
The method for measuring automobile batteries packet state of charge, which is characterized in that including current divider, BMS testing current module, temperature sensor
With BMS controller, current divider accesses power battery pack trunk roads, and BMS testing current module is used for constant to current divider one
Calibrated current, the voltage for detecting current divider resistance both ends, temperature sensor is for detecting current divider resistance temperature, BMS controller
For controlling the detection and calculated result of the work of BMS testing current module, storage BMS testing current module.
6. a kind of automobile batteries management system according to claim 5, which is characterized in that current divider resistive voltage test point
At current divider resistive edge both ends, using resistance center as middle line, symmetrical arrangement.
7. a kind of automobile batteries management system according to claim 5, which is characterized in that temperature sensor is located at current divider
Resistive surface.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910589480.2A CN110208715B (en) | 2019-07-02 | 2019-07-02 | Method for measuring charge state of automobile battery pack and automobile battery management system |
| PCT/CN2019/124032 WO2021000520A1 (en) | 2019-07-02 | 2019-12-09 | Method for measuring status of capacity of automobile battery pack and automobile battery management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910589480.2A CN110208715B (en) | 2019-07-02 | 2019-07-02 | Method for measuring charge state of automobile battery pack and automobile battery management system |
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| CN110208715A true CN110208715A (en) | 2019-09-06 |
| CN110208715B CN110208715B (en) | 2021-09-17 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111679118A (en) * | 2020-06-11 | 2020-09-18 | 同济大学 | A real-time online detection method of current signal considering resistance drift of resistance |
| WO2021000520A1 (en) * | 2019-07-02 | 2021-01-07 | 上海禾他汽车科技有限公司 | Method for measuring status of capacity of automobile battery pack and automobile battery management system |
| CN112858768A (en) * | 2021-01-07 | 2021-05-28 | 力高(山东)新能源技术有限公司 | Circuit and method for improving current detection precision of current divider |
| CN112904072A (en) * | 2021-01-14 | 2021-06-04 | 福建时代星云科技有限公司 | Current precision detection method, system, equipment and medium for vehicle-mounted battery |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113447693B (en) * | 2021-05-27 | 2022-03-29 | 蚌埠市双环电子集团股份有限公司 | Current detection splitter for new energy automobile battery management system |
| CN117445757B (en) * | 2023-10-23 | 2024-05-14 | 安徽能通新能源科技有限公司 | Lithium battery capacity management system and method based on energy measurement technology |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052130A (en) * | 2014-07-04 | 2014-09-17 | 山东大学 | Lithium iron phosphate battery power management system and working method for service robot |
| CN106093793A (en) * | 2016-07-28 | 2016-11-09 | 河南许继仪表有限公司 | A kind of SOC estimation method based on battery discharge multiplying power and device |
| CN106501721A (en) * | 2016-06-03 | 2017-03-15 | 湘潭大学 | A kind of lithium battery SOC estimation method based on biological evolution |
| CN106526304A (en) * | 2016-10-31 | 2017-03-22 | 成都雅骏新能源汽车科技股份有限公司 | Shunting type digital current sensor for new energy electric vehicle |
| CN106597316A (en) * | 2017-02-03 | 2017-04-26 | 贵阳安达科技能源有限公司 | Battery back SOC calculation method |
| CN206161730U (en) * | 2016-10-31 | 2017-05-10 | 成都雅骏新能源汽车科技股份有限公司 | New forms of energy electric motor car shunting digit current sensor |
| CN206431199U (en) * | 2017-02-17 | 2017-08-22 | 烟台海博电气设备有限公司 | A kind of lithium battery BMS system power detection modules |
| CN107677883A (en) * | 2017-10-20 | 2018-02-09 | 厦门马恒达汽车零部件有限公司 | A kind of current sensor adjustment in accuracy device and method |
| CN107728094A (en) * | 2017-10-23 | 2018-02-23 | 宁德时代新能源科技股份有限公司 | Current calibration coefficient measuring device and method, and current detecting device and method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08103003A (en) * | 1994-09-29 | 1996-04-16 | Suzuki Motor Corp | Residual battery capacity detector for motor operated vehicle |
| DE102005029096A1 (en) * | 2005-06-23 | 2007-01-04 | Robert Bosch Gmbh | Battery condition detection for car batteries |
| CN102004226B (en) * | 2010-09-30 | 2013-06-05 | 中山大学 | Pure electrical vehicle battery pack state-of-charge (SOC) estimation device and method |
| CN203455460U (en) * | 2013-07-02 | 2014-02-26 | 上海汽车集团股份有限公司 | Current calculation circuit |
| CN103901349B (en) * | 2014-03-11 | 2016-05-25 | 江苏大学 | A kind of power battery pack electric quantity measuring system |
| CN107589291A (en) * | 2016-07-06 | 2018-01-16 | 深圳市沃特玛电池有限公司 | Electric automobile current detecting system and method |
| CN110208715B (en) * | 2019-07-02 | 2021-09-17 | 上海禾他汽车科技有限公司 | Method for measuring charge state of automobile battery pack and automobile battery management system |
-
2019
- 2019-07-02 CN CN201910589480.2A patent/CN110208715B/en active Active
- 2019-12-09 WO PCT/CN2019/124032 patent/WO2021000520A1/en active Application Filing
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052130A (en) * | 2014-07-04 | 2014-09-17 | 山东大学 | Lithium iron phosphate battery power management system and working method for service robot |
| CN106501721A (en) * | 2016-06-03 | 2017-03-15 | 湘潭大学 | A kind of lithium battery SOC estimation method based on biological evolution |
| CN106093793A (en) * | 2016-07-28 | 2016-11-09 | 河南许继仪表有限公司 | A kind of SOC estimation method based on battery discharge multiplying power and device |
| CN106526304A (en) * | 2016-10-31 | 2017-03-22 | 成都雅骏新能源汽车科技股份有限公司 | Shunting type digital current sensor for new energy electric vehicle |
| CN206161730U (en) * | 2016-10-31 | 2017-05-10 | 成都雅骏新能源汽车科技股份有限公司 | New forms of energy electric motor car shunting digit current sensor |
| CN106597316A (en) * | 2017-02-03 | 2017-04-26 | 贵阳安达科技能源有限公司 | Battery back SOC calculation method |
| CN206431199U (en) * | 2017-02-17 | 2017-08-22 | 烟台海博电气设备有限公司 | A kind of lithium battery BMS system power detection modules |
| CN107677883A (en) * | 2017-10-20 | 2018-02-09 | 厦门马恒达汽车零部件有限公司 | A kind of current sensor adjustment in accuracy device and method |
| CN107728094A (en) * | 2017-10-23 | 2018-02-23 | 宁德时代新能源科技股份有限公司 | Current calibration coefficient measuring device and method, and current detecting device and method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021000520A1 (en) * | 2019-07-02 | 2021-01-07 | 上海禾他汽车科技有限公司 | Method for measuring status of capacity of automobile battery pack and automobile battery management system |
| CN111679118A (en) * | 2020-06-11 | 2020-09-18 | 同济大学 | A real-time online detection method of current signal considering resistance drift of resistance |
| CN112858768A (en) * | 2021-01-07 | 2021-05-28 | 力高(山东)新能源技术有限公司 | Circuit and method for improving current detection precision of current divider |
| CN112858768B (en) * | 2021-01-07 | 2022-12-16 | 力高(山东)新能源技术股份有限公司 | Circuit and method for improving current detection precision of current divider |
| CN112904072A (en) * | 2021-01-14 | 2021-06-04 | 福建时代星云科技有限公司 | Current precision detection method, system, equipment and medium for vehicle-mounted battery |
| CN112904072B (en) * | 2021-01-14 | 2024-03-01 | 福建时代星云科技有限公司 | Method, system, equipment and medium for detecting current precision of vehicle-mounted battery |
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| CN110208715B (en) | 2021-09-17 |
| WO2021000520A1 (en) | 2021-01-07 |
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