CN112014641A - Method and device for testing finished automobile insulation resistance detection precision of electric automobile - Google Patents
Method and device for testing finished automobile insulation resistance detection precision of electric automobile Download PDFInfo
- Publication number
- CN112014641A CN112014641A CN201910452593.8A CN201910452593A CN112014641A CN 112014641 A CN112014641 A CN 112014641A CN 201910452593 A CN201910452593 A CN 201910452593A CN 112014641 A CN112014641 A CN 112014641A
- Authority
- CN
- China
- Prior art keywords
- insulation resistance
- value
- vehicle
- variable resistor
- resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/025—Measuring very high resistances, e.g. isolation resistances, i.e. megohm-meters
-
- 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
Abstract
The invention provides a method and a device for testing the finished automobile insulation resistance detection precision of an electric automobile, wherein the testing method comprises the steps of calculating a fault critical value of the finished automobile insulation resistance according to the electric automobile terminal voltage under a preset charge state SOC; setting an upper limit value of a value range of the variable resistor under the SOC according to a fault critical value, and connecting the variable resistor between the positive pole of the vehicle and the vehicle body ground in parallel; adjusting the resistance value of the variable resistor according to a preset step length to obtain a measured value of the insulation resistance of the whole vehicle and a read value of the insulation resistance of the whole vehicle reported by the ECU, and calculating to obtain the measurement precision of the insulation resistance of different whole vehicles under the preset SOC; and obtaining and recording the measurement precision of the insulation resistance of different finished vehicles under different SOCs. According to the scheme, when the insulation resistance value of the whole vehicle is in a low state, the detection precision of the insulation resistance of the whole vehicle within the full SOC range can be tested, the integrity of test data and test results is guaranteed, and the accuracy of reporting insulation faults is finally guaranteed.
Description
Technical Field
The invention relates to the field of automobiles, in particular to a method and a device for testing the detection precision of the insulation resistance of an electric automobile.
Background
Insulation faults of the electric automobile can cause high-voltage electricity exposure and personal injury. The detection precision of the insulation resistance of the whole vehicle directly influences the detection and report of the insulation fault of the vehicle. In the prior art, a method for testing the detection precision of the insulation resistance of the whole vehicle is not available, and the accuracy of insulation fault detection and reporting is difficult to ensure.
Disclosure of Invention
The embodiment of the invention provides a method and a device for testing the finished automobile insulation resistance detection precision of an electric automobile, which are used for solving the problems that the accuracy of insulation fault detection and reporting is difficult to ensure due to the lack of a method for testing the finished automobile insulation resistance detection precision in the prior art.
In order to solve the above technical problem, an embodiment of the present invention provides the following technical solutions:
one embodiment of the invention provides a method for testing finished automobile insulation resistance detection precision of an electric automobile, which comprises the following steps:
calculating a fault critical value of the insulation resistance of the whole vehicle according to the voltage of the electric vehicle terminal under the preset charge state SOC;
setting an upper limit value of a value range of the variable resistor under the SOC according to the fault critical value, and connecting the variable resistor between the positive pole of the vehicle and the vehicle body ground in parallel;
adjusting the resistance value of the variable resistor according to a preset step length, obtaining a measured value of the insulation resistance of the whole vehicle and a read value of the insulation resistance of the whole vehicle reported by an ECU (electronic control unit) under the condition of different resistance values of the variable resistor, and calculating the measurement accuracy of the insulation resistance of different whole vehicles under the preset SOC according to the measured value and the read value;
and obtaining and recording the measurement precision of the insulation resistance of different finished vehicles under different SOCs.
Further, the step of calculating the fault critical value of the insulation resistance of the whole vehicle includes:
and measuring the end voltage of the electric vehicle, and calculating to obtain the fault critical value of the insulation resistance of the whole vehicle by multiplying the end voltage of the electric vehicle by a preset numerical value.
Further, the step of obtaining the measured value of the insulation resistance of the whole vehicle includes:
adjusting the resistance value of the variable resistor within the range from 0 to the upper limit value of the variable resistor according to a preset step length;
and under different resistance values of the variable resistor, obtaining a measured value of the insulation resistance of the whole vehicle obtained by an insulation resistance tester, wherein the insulation resistance tester is connected between the anode of the vehicle and the ground of the vehicle body.
Further, the step of calculating the measurement accuracy of the insulation resistance of different vehicles under the preset SOC includes:
and reading the read value of the whole vehicle insulation resistance reported by the ECU, and calculating the detection precision of the insulation resistance according to the read value and the measured value of the whole vehicle insulation resistance.
Further, the upper limit value of the variable resistor is obtained by adding a fault critical value of the insulation resistor of the whole vehicle and a preset resistance value.
One embodiment of the present invention further provides a device for testing finished vehicle insulation resistance detection precision of an electric vehicle, including:
the first calculating unit is used for calculating a fault critical value of the insulation resistance of the whole vehicle according to the voltage of the electric vehicle terminal under the preset charge state SOC;
the setting processing unit is used for setting the upper limit value of the value range of the variable resistor under the SOC according to the fault critical value and connecting the variable resistor between the positive pole of the vehicle and the vehicle body ground in parallel;
the measurement calculation unit is used for adjusting the resistance value of the variable resistor according to a preset step length, obtaining a measured value of the insulation resistance of the whole vehicle and a read value of the insulation resistance of the whole vehicle reported by the ECU under the condition of different resistance values of the variable resistor, and calculating the measurement accuracy of the insulation resistance of different whole vehicles under the preset SOC according to the measured value and the read value;
and the recording unit is used for acquiring and recording the measurement precision of the insulation resistance of the whole vehicle under different SOCs.
Further, the first calculating unit is further configured to measure the voltage of the electric vehicle terminal, and calculate the fault critical value of the insulation resistance of the entire vehicle by multiplying the voltage of the electric vehicle terminal by a preset value.
Further, the measurement calculation unit is further configured to adjust the resistance value of the variable resistor within a range from 0 to an upper limit value of the variable resistor according to a preset step length;
and under different resistance values of the variable resistor, obtaining a measured value of the insulation resistance of the whole vehicle obtained by an insulation resistance tester, wherein the insulation resistance tester is connected between the anode of the vehicle and the ground of the vehicle body.
Further, the measurement and calculation unit is further configured to read a read value of the insulation resistance of the entire vehicle reported by the ECU, and calculate the detection accuracy of the insulation resistance according to the read value and the measured value of the insulation resistance of the entire vehicle.
Further, the setting and processing unit is further configured to calculate an upper limit value of the variable resistor, where the upper limit value of the variable resistor is calculated by adding a fault critical value of the insulation resistor of the entire vehicle to a preset resistance value.
The invention has the beneficial effects that:
according to the scheme, when the insulation resistance value of the whole vehicle is in a low state, the insulation resistance value detection precision in the full SOC range is tested, the integrity of test data and test results is guaranteed, and the accuracy of insulation fault reporting is finally guaranteed.
Drawings
Fig. 1 is a schematic diagram illustrating a method for testing finished automobile insulation resistance detection accuracy of an electric automobile according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a device for testing finished automobile insulation resistance detection accuracy of an electric automobile according to an embodiment of the present invention.
Description of reference numerals:
21-a first calculation unit; 22-setting a processing unit; 23-a measurement calculation unit; 24-recording unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The invention provides a method and a device for testing the finished automobile insulation resistance detection precision of an electric automobile, aiming at the problems that the prior art lacks a method for testing the finished automobile insulation resistance detection precision and the accuracy of insulation fault detection and reporting is difficult to guarantee.
As shown in fig. 1, an embodiment of the present invention provides a method for testing finished vehicle insulation resistance detection accuracy of an electric vehicle, including:
and 11, measuring the end voltage of the electric vehicle under a certain preset charge state SOC, and calculating the fault critical value of the insulation resistance of the whole vehicle according to the end voltage.
Optionally, the fault critical value of the finished automobile insulation resistance is calculated by multiplying the electric vehicle terminal voltage by a preset value.
Specifically, the fault critical value of the insulation resistance of the whole vehicle is calculated according to a first formula; wherein the first formula is: r0 ═ T0 × V0.
Wherein, R0 represents the fault critical value of the insulation resistance of the whole vehicle, V0 represents the voltage of the electric vehicle terminal, the unit is volt, and T0 is a preset value, and the unit is ohm/volt.
It should be noted that the value of T0 may be set according to an empirical value or according to actual measurement results of different vehicle types, for example, T0 may be 500 Ω/V.
And 12, setting an upper limit value of a value range of the variable resistor under the SOC according to the fault critical value, and connecting the variable resistor between the positive pole of the vehicle and the vehicle body ground in parallel.
Optionally, the upper limit value of the variable resistor is obtained by adding a fault critical value of the insulation resistor of the entire vehicle to a preset resistance value.
Specifically, the upper limit value of the variable resistor is calculated according to a third formula; wherein the third formula is: the upper limit of the variable resistance is R0+ R1.
Wherein R0 represents the fault critical value of the insulation resistance of the whole vehicle, and R1 represents a preset resistance value.
It should be noted that the value of R1 may be set according to an empirical value or according to actual measurement results of different vehicle types, for example, R1 may be 500k Ω.
And step 13, adjusting the resistance value of the variable resistor according to a preset step length, obtaining the measured value of the insulation resistance of the whole vehicle and the read value of the insulation resistance of the whole vehicle reported by the ECU under the condition of different resistance values of the variable resistor, and calculating the measurement precision of the insulation resistance of the whole vehicle under the preset SOC according to the measured value and the read value.
Alternatively, the resistance of the variable resistor is adjusted within a range from 0 to the upper limit value of the variable resistor, for example, the preset step may be set to 500 Ω, and the resistances of the variable resistor are set to 0 Ω, 500 Ω, 1000 Ω, 1500 Ω … … in sequence from 0 to a resistance closest to but not exceeding the upper limit value of the variable resistor.
And under each resistance value of the set variable resistor, respectively measuring and obtaining the measured value of the insulation resistance of the whole vehicle by using an insulation resistance tester, reading the read value of the insulation resistance of the whole vehicle reported by the ECU, and calculating the measurement precision of the insulation resistance of different whole vehicles under the preset SOC according to the measured value and the read value.
It should be noted that the ECU is a controller for detecting the internal insulation of the electric vehicle, and can monitor and report the insulation resistance of the entire vehicle.
Optionally, the step of calculating the measurement accuracy of the insulation resistance of different vehicles under the preset SOC includes:
and reading the read value of the whole vehicle insulation resistance reported by the ECU, and calculating the detection precision of the insulation resistance according to the read value and the measured value of the whole vehicle insulation resistance.
Specifically, the detection precision of the insulation resistance is calculated according to a second formula; wherein the second formula is: the detection accuracy of the insulation resistance is (1-R/Rt) × 100%.
And R represents a read value of the insulation resistance of the whole vehicle reported by the ECU, and Rt represents a measured value of the insulation resistance of the whole vehicle.
And step 14, obtaining and recording the measurement precision of the insulation resistance of different finished vehicles under different SOCs.
In this way, the steps 11 to 13 can be respectively repeated according to different SOCs, so that the measurement accuracy of the insulation resistance of the whole vehicle under different SOCs can be obtained.
Alternatively, the SOC may be set to 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100% respectively, and the test of the above steps may be performed, to finally obtain the test result of the insulation resistance value detection accuracy in the vicinity of the insulation fault critical value in the full SOC range.
The method for testing the finished automobile insulation resistance detection precision of the electric automobile in the embodiment can test the insulation resistance detection precision in the full SOC range when the finished automobile insulation resistance is in a lower state, so that the integrity of test data and test results is ensured, and the accuracy of insulation fault reporting is finally ensured.
As shown in fig. 2, an embodiment of the present invention further provides a device for testing finished vehicle insulation resistance detection accuracy of an electric vehicle, including:
the first calculating unit 21 is configured to calculate a fault critical value of an insulation resistance of the entire vehicle according to an electric vehicle terminal voltage in a preset state of charge SOC;
the setting processing unit 22 is used for setting an upper limit value of a value range of the variable resistor under the SOC according to the fault critical value and connecting the variable resistor between the positive pole of the vehicle and the vehicle body ground in parallel;
the measurement calculation unit 23 is configured to adjust the resistance value of the variable resistor according to a preset step length, obtain a measured value of the insulation resistance of the entire vehicle and a read value of the insulation resistance of the entire vehicle reported by the ECU under the condition of different resistance values of the variable resistor, and calculate measurement accuracy of the insulation resistance of the entire vehicle under the preset SOC according to the measured value and the read value;
alternatively, the measurement calculation unit 23 adjusts the resistance value of the variable resistor within a range from 0 to the upper limit value of the variable resistor, for example, the preset step may be set to 500 Ω, and the resistance values of the variable resistor are set to 0 Ω, 500 Ω, 1000 Ω, 1500 Ω … … in sequence from 0 to a resistance value closest to but not exceeding the upper limit value of the variable resistor. And under each resistance value of the set variable resistor, respectively measuring by using an insulation resistance tester to obtain a measured value of the insulation resistance of the whole vehicle.
And the recording unit 24 is used for acquiring and recording the measurement accuracy of the insulation resistance of the whole vehicle under different SOCs.
Further, the first calculating unit 21 is further configured to measure the voltage of the electric vehicle terminal, and calculate the fault critical value of the insulation resistance of the entire vehicle by multiplying the voltage of the electric vehicle terminal by a preset value.
Specifically, the fault critical value of the insulation resistance of the whole vehicle is calculated according to a first formula, wherein the first formula is as follows: r0 ═ T0 × V0;
wherein, R0 represents the fault critical value of the insulation resistance of the whole vehicle, V0 represents the voltage of the electric vehicle terminal, the unit is volt, and T0 is a preset value, and the unit is ohm/volt.
It should be noted that the value of T0 may be set according to an empirical value or according to actual measurement results of different vehicle types, for example, T0 may be 500 Ω/V.
Further, the setting processing unit 22 is further configured to calculate an upper limit value of the variable resistor, where the upper limit value of the variable resistor is obtained by adding a fault critical value of the insulation resistance of the entire vehicle to a preset resistance value.
Specifically, the upper limit value of the variable resistor is calculated according to a third formula, where the third formula is: the upper limit value of the variable resistance is R0+ R1;
wherein R0 represents the fault critical value of the insulation resistance of the whole vehicle, and R1 represents a preset resistance value.
It should be noted that the value of R1 may be set according to an empirical value or according to actual measurement results of different vehicle types, for example, R1 may be 500k Ω.
Further, the measurement and calculation unit 23 is further configured to read a read value of the insulation resistance of the entire vehicle reported by the ECU, and calculate measurement accuracies of insulation resistances of different entire vehicles under the preset SOC according to the measured value and the read value.
It should be noted that the ECU is a controller for detecting insulation inside the electric vehicle, and may monitor and report the insulation resistance of the entire vehicle, and calculate the detection accuracy of the insulation resistance according to the read value and the measured value of the insulation resistance of the entire vehicle.
Specifically, the detection accuracy of the insulation resistance is calculated according to a second formula, wherein the second formula is as follows: the detection precision of the insulation resistance is (1-R/Rt) × 100%;
and R represents a read value of the insulation resistance of the whole vehicle reported by the ECU, and Rt represents a measured value of the insulation resistance of the whole vehicle.
Alternatively, the recording unit 24 may set the SOCs to 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100% respectively for testing, and finally obtain a test result of the insulation resistance value detection accuracy in the vicinity of the insulation fault critical value in the full SOC range.
It should be noted that, the device for testing the finished automobile insulation resistance detection precision of the electric automobile in the above embodiment can test the insulation resistance detection precision in the full SOC range when the finished automobile insulation resistance is in a low state, so as to ensure the integrity of the test data and the test result, and finally ensure the accuracy of the insulation fault reporting.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.
Claims (10)
1. A method for testing finished automobile insulation resistance detection precision of an electric automobile is characterized by comprising the following steps:
calculating a fault critical value of the insulation resistance of the whole vehicle according to the voltage of the electric vehicle terminal under the preset charge state SOC;
setting an upper limit value of a value range of the variable resistor under the SOC according to the fault critical value, and connecting the variable resistor between the positive pole of the vehicle and the vehicle body ground in parallel;
adjusting the resistance value of the variable resistor according to a preset step length, obtaining a measured value of the insulation resistance of the whole vehicle and a read value of the insulation resistance of the whole vehicle reported by an ECU (electronic control unit) under the condition of different resistance values of the variable resistor, and calculating the measurement accuracy of the insulation resistance of different whole vehicles under the preset SOC according to the measured value and the read value;
and obtaining and recording the measurement precision of the insulation resistance of different finished vehicles under different SOCs.
2. The test method according to claim 1, wherein the step of calculating the fault threshold value of the insulation resistance of the whole vehicle comprises:
and measuring the end voltage of the electric vehicle, and calculating to obtain the fault critical value of the insulation resistance of the whole vehicle by multiplying the end voltage of the electric vehicle by a preset numerical value.
3. The test method according to claim 1, wherein the step of obtaining a measurement of the insulation resistance of the entire vehicle comprises:
adjusting the resistance value of the variable resistor within the range from 0 to the upper limit value of the variable resistor according to a preset step length;
and under different resistance values of the variable resistor, obtaining a measured value of the insulation resistance of the whole vehicle obtained by an insulation resistance tester, wherein the insulation resistance tester is connected between the anode of the vehicle and the ground of the vehicle body.
4. The test method according to claim 1,
the step of calculating the measurement precision of the insulation resistance of different finished vehicles under the preset SOC comprises the following steps:
and reading the read value of the whole vehicle insulation resistance reported by the ECU, and calculating the detection precision of the insulation resistance according to the read value and the measured value of the whole vehicle insulation resistance.
5. The test method according to claim 1, wherein the upper limit value of the variable resistor is calculated by adding a fault critical value of the insulation resistance of the whole vehicle to a preset resistance value.
6. The utility model provides a whole car insulation resistance of electric automobile detects testing arrangement of precision which characterized in that includes:
the first calculating unit is used for calculating a fault critical value of the insulation resistance of the whole vehicle according to the voltage of the electric vehicle terminal under the preset charge state SOC;
the setting processing unit is used for setting the upper limit value of the value range of the variable resistor under the SOC according to the fault critical value and connecting the variable resistor between the positive pole of the vehicle and the vehicle body ground in parallel;
the measurement calculation unit is used for adjusting the resistance value of the variable resistor according to a preset step length, obtaining a measured value of the insulation resistance of the whole vehicle and a read value of the insulation resistance of the whole vehicle reported by the ECU under the condition of different resistance values of the variable resistor, and calculating the measurement accuracy of the insulation resistance of the whole vehicle under the preset SOC according to the measured value and the read value;
and the recording unit is used for acquiring and recording the measurement precision of the insulation resistance of the whole vehicle under different SOCs.
7. The testing device of claim 6, wherein the first calculating unit is further configured to measure the voltage of the electric vehicle terminal, and calculate the fault critical value of the insulation resistance of the entire vehicle by multiplying the voltage of the electric vehicle terminal by a preset value.
8. The testing device of claim 6, wherein the measurement calculating unit is further configured to adjust the resistance value of the variable resistor within a range from 0 to an upper limit value of the variable resistor according to a preset step length;
and under different resistance values of the variable resistor, obtaining a measured value of the insulation resistance of the whole vehicle obtained by an insulation resistance tester, wherein the insulation resistance tester is connected between the anode of the vehicle and the ground of the vehicle body.
9. The testing device of claim 6, wherein the measurement and calculation unit is further configured to read a read value of the insulation resistance of the entire vehicle reported by the ECU, and calculate the detection accuracy of the insulation resistance according to the read value and the measured value of the insulation resistance of the entire vehicle.
10. The testing device of claim 6, wherein the setting processing unit is further configured to calculate an upper limit value of the variable resistor, and the upper limit value of the variable resistor is calculated by adding a fault critical value of the insulation resistance of the entire vehicle to a preset resistance value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910452593.8A CN112014641B (en) | 2019-05-28 | 2019-05-28 | Method and device for testing insulation resistance detection precision of whole electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910452593.8A CN112014641B (en) | 2019-05-28 | 2019-05-28 | Method and device for testing insulation resistance detection precision of whole electric automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112014641A true CN112014641A (en) | 2020-12-01 |
| CN112014641B CN112014641B (en) | 2023-09-15 |
Family
ID=73501039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910452593.8A Active CN112014641B (en) | 2019-05-28 | 2019-05-28 | Method and device for testing insulation resistance detection precision of whole electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112014641B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104142475A (en) * | 2013-05-06 | 2014-11-12 | 广州汽车集团股份有限公司 | Device and method for evaluating insulation detecting module |
| CN105259458A (en) * | 2015-11-26 | 2016-01-20 | 北京闪信鼎中技术有限公司 | Device and method for verifying insulation monitoring accuracy and leakage protection of battery pack management system |
| CN105277787A (en) * | 2015-09-30 | 2016-01-27 | 上海凌翼动力科技有限公司 | Method and system for predicting insulation resistor fault of electric car |
| CN105911353A (en) * | 2016-04-15 | 2016-08-31 | 广州汽车集团股份有限公司 | Automobile insulation resistance detection circuit and method |
| CN106248254A (en) * | 2016-07-29 | 2016-12-21 | 广州视源电子科技股份有限公司 | The detection method of thermometer board sample circuit precision, Apparatus and system |
| CN106707116A (en) * | 2016-11-29 | 2017-05-24 | 北京理工华创电动车技术有限公司 | Electric automobile body insulation detection system and method |
| CN207662966U (en) * | 2017-12-04 | 2018-07-27 | 宝沃汽车（中国）有限公司 | Battery pack insulating resistor detecting circuit, battery management system and electric vehicle |
| CN109142920A (en) * | 2018-08-09 | 2019-01-04 | 香港生产力促进局 | It is configurable to the battery simulation system and method for detection BMS function |
| CN109188304A (en) * | 2018-09-03 | 2019-01-11 | 奇瑞汽车股份有限公司 | A kind of power battery pack system SOC method for testing precision |
-
2019
- 2019-05-28 CN CN201910452593.8A patent/CN112014641B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104142475A (en) * | 2013-05-06 | 2014-11-12 | 广州汽车集团股份有限公司 | Device and method for evaluating insulation detecting module |
| CN105277787A (en) * | 2015-09-30 | 2016-01-27 | 上海凌翼动力科技有限公司 | Method and system for predicting insulation resistor fault of electric car |
| CN105259458A (en) * | 2015-11-26 | 2016-01-20 | 北京闪信鼎中技术有限公司 | Device and method for verifying insulation monitoring accuracy and leakage protection of battery pack management system |
| CN105911353A (en) * | 2016-04-15 | 2016-08-31 | 广州汽车集团股份有限公司 | Automobile insulation resistance detection circuit and method |
| CN106248254A (en) * | 2016-07-29 | 2016-12-21 | 广州视源电子科技股份有限公司 | The detection method of thermometer board sample circuit precision, Apparatus and system |
| CN106707116A (en) * | 2016-11-29 | 2017-05-24 | 北京理工华创电动车技术有限公司 | Electric automobile body insulation detection system and method |
| CN207662966U (en) * | 2017-12-04 | 2018-07-27 | 宝沃汽车（中国）有限公司 | Battery pack insulating resistor detecting circuit, battery management system and electric vehicle |
| CN109142920A (en) * | 2018-08-09 | 2019-01-04 | 香港生产力促进局 | It is configurable to the battery simulation system and method for detection BMS function |
| CN109188304A (en) * | 2018-09-03 | 2019-01-11 | 奇瑞汽车股份有限公司 | A kind of power battery pack system SOC method for testing precision |
Non-Patent Citations (3)
| Title |
|---|
| 叶方标等: "电动汽车绝缘电阻测量及其误差分析", 《客车技术与研究》 * |
| 祝小冬等: "锂离子电池组管理系统硬件电路设计与台架试验", 《电池工业》 * |
| 赵志刚等: "电动汽车绝缘电阻检测系统设计与研究", 《工业仪表与自动化装置》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112014641B (en) | 2023-09-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108333429B (en) | Power battery management system, and device and method for detecting insulation resistance of power battery | |
| CN103158576B (en) | The method and system of battery current Measurement and calibration | |
| US6359441B1 (en) | Electronic battery tester | |
| CN108398645A (en) | A kind of electric automobile insulation impedance detection method | |
| EP1821112A1 (en) | Method and apparatus for monitoring the condition of a battery by measuring its internal resistance | |
| US20120221269A1 (en) | Method and system for determining dc bus leakage | |
| IL293176B2 (en) | Method for determining a state value of a traction battery | |
| JP2004191373A (en) | Electronic battery tester | |
| US20100100345A1 (en) | System and method for identifying issues in current and voltage measurements | |
| CN106997007B (en) | Insulation resistance measuring device and method for electric automobile direct-current high-voltage system | |
| JP2014134467A (en) | Secondary battery state diagnostic method | |
| KR20150020270A (en) | Estimating the state of charge of a battery | |
| CN103713264A (en) | Battery management system SOC estimation precision test system and test method | |
| CN111308381A (en) | Health state evaluation method for power battery of pure electric bus | |
| CN104977534A (en) | Method for estimating state-of-health of battery and device thereof | |
| CN112014641B (en) | Method and device for testing insulation resistance detection precision of whole electric automobile | |
| CN111976542B (en) | SOC estimation method and device for lead-acid battery of electric vehicle | |
| CN111781526B (en) | Method and device for detecting vehicle battery and battery detection equipment | |
| CN112240954A (en) | Insulation detection circuit and method | |
| CN113156192A (en) | Current sampling device of high-voltage system of new energy vehicle | |
| AU2012371210A1 (en) | Method and system for determining DC bus leakage | |
| CN114264886B (en) | Rapid measurement method for super capacitor parameters | |
| CN110716140A (en) | Electric vehicle lithium battery electric quantity detection method based on temperature measurement | |
| US20240110991A1 (en) | Insulation resistance testing device and insulation resistance testing method | |
| CN108917889B (en) | Fuel gauge testing system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |