CN203117411U - BMS current error test system - Google Patents
BMS current error test system Download PDFInfo
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- CN203117411U CN203117411U CN 201220699287 CN201220699287U CN203117411U CN 203117411 U CN203117411 U CN 203117411U CN 201220699287 CN201220699287 CN 201220699287 CN 201220699287 U CN201220699287 U CN 201220699287U CN 203117411 U CN203117411 U CN 203117411U
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- 238000012360 testing method Methods 0.000 title claims abstract description 72
- 238000001514 detection method Methods 0.000 description 5
- 239000000523 sample Substances 0.000 description 3
- 238000012937 correction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
The utility model discloses a BMS current error test system. The BMS current error test system comprises a control unit, and a current output module and a load module, which are connected with the control unit. The BMS current error test system is characterized in that the control unit is also connected with a constant temperature holding module, and the control unit, the current output module, the load module, and the constant temperature holding module form a current acquisition error test subsystem; or the control unit is also connected with the constant temperature holding module and a BMS diverter current test module, and the control unit, the current output module, the load module, the constant temperature holding module, and the BMS diverter current test module form a BMS diverter error influence test subsystem.
Description
Technical field
The utility model relates to the BMS technical field of measurement and test, is specifically related to a kind of BMS current error test macro.
Background technology
Current data in the Acquisition Circuit is the BMS(battery management system) a critical function, existing BMS is standing to be equipped with shunt and to carry out testing current.Because quality and the internal resistance resistance of shunt there are differences, the current data that BMS is gathered produces error, Gu before shunt is integrated into BMS, need earlier its error effect to be measured, has enough precision to guarantee made BMS.Other structures of BMS inside also can cause the error of current data that the current acquisition function of whole BMS is carried out error determine, are conducive to control the quality of BMS product or in system error are revised.
The error of variation of temperature BMS and shunt has bigger influence in the environment, and existing BMS and shunt current acquisition error testing are not controlled environment temperature, so that its data of surveying can not reflect the true character of BMS and shunt.
Summary of the invention
In view of this, the utility model discloses the accurate test b MS of a kind of energy current acquisition function true error or BMS shunt to the test macro of BMS current acquisition error effect degree.
The purpose of this utility model is achieved through the following technical solutions: a kind of BMS current acquisition error testing system, comprise control module and the electric current output module, the load blocks that are connected with control module, it is characterized in that: described control module also connects constant temperature and keeps module, and control module, electric current output module, load blocks, constant temperature keep module to form current acquisition error testing subsystem;
And/or
Described control module also connects constant temperature and keeps module and BMS shunt testing current module, and control module, electric current output module, load blocks, constant temperature keep module, BMS shunt testing current module to form BMS shunt error effect test subsystems.
BMS current acquisition function when described BMS current acquisition error testing system for detection of finished product BMS then should possess current acquisition error testing subsystem at least.Electric current output module and load blocks and BMS to be measured are connected into test circuit, because the resistance of BMS is less, need the working load module to prevent the test circuit short circuit.The electric current output module is under control module control, to test circuit delivered constant electric current, use the current value of electric current output module output to deduct the measured test circuit current value of BMS, be the error of BMS current acquisition function again divided by the merchant of the current value gained of electric current output module output.
When described BMS current acquisition error testing system during to BMS current acquisition error effect degree, then should possess the BMS shunt error effect test subsystems of band BMS shunt testing current module mainly for detection of the BMS shunt.Electric current output module and load blocks and BMS shunt to be measured are connected into test circuit, insert simultaneously BMS shunt testing current module in test circuit, in order to the flow through size of current of BMS shunt to be measured of test.The electric current output module is under control module control, to test circuit delivered constant electric current, use to use the current value of electric current output module output to deduct the measured test circuit current value of BMS shunt testing current module, being the BMS shunt divided by the merchant of the current value gained of electric current output module output again influences BMS current acquisition functional error.
Constant temperature keeps module then under the control of control module, for test circuit provides constant probe temperature.
It is constant temperature oven that described constant temperature keeps module.
Constant temperature oven can be isolated with test circuit and the external environment be made up of the constant temperature oven of electric current output module, BMS shunt testing current module, load blocks, BMS shunt to be measured or BMS to be measured, be convenient to make test result more accurate for it provides a constant probe temperature.More near the true character of BMS and BMS shunt, the probe temperature in the constant temperature oven is traditionally arranged to be 25 ℃ to cause 25 ℃ of following measured data.
BMS current acquisition error testing provided by the utility model system is by arranging constant temperature oven, for the test of BMS current acquisition functional error provides a stable temperature, measured data are reacted the character of BMS more truly, are conducive to the current acquisition function of BMS is done further to revise.
Described load blocks comprises the variable resistor that at least one is connected with BMS to be measured or BMS shunt to be measured.
Further, described BMS shunt testing current module comprises the voltage table in parallel with BMS shunt to be measured.
Use the magnitude of voltage at BMS shunt two ends in the voltage table test test circuit, and with its internal resistance divided by the BMS shunt, just can obtain the test circuit current value.
The utility model has comprised current acquisition error testing subsystem and BMS shunt error effect test subsystems, can be applicable to respectively that BMS finished product detection or BMS shunt detect, the two shared most equipment is changed easyly, convenient adapts to different detection demands.The utility model is by arranging constant temperature oven, for the BMS shunt provides a stable temperature to BMS current acquisition functional error influence test, make the data of surveying more near the true influence of BMS shunt in BMS, be conducive to detect the quality of BMS shunt, carry out BMS production to select up-to-standard BMS shunt.
Description of drawings
Fig. 1 is a kind of structured flowchart of BMS current error test macro.
Embodiment
Describe in further detail for the ease of it will be appreciated by those skilled in the art that below in conjunction with accompanying drawing and the utility model of embodiment:
Embodiment 1
As shown in Figure 1, present embodiment provides a kind of BMS current acquisition error testing system for detection of the disabled functional error of BMS product electric current, comprises a current acquisition error testing subsystem: constant temperature maintenance module, electric current output module, load blocks that current acquisition error testing subsystem comprises control module and is connected with control module.
Wherein, above-mentioned electric current output module is a steady current power supply; It is constant temperature oven that above-mentioned constant temperature keeps module; Above-mentioned load blocks is a variable resistor.
In the present embodiment, BMS current acquisition functional error method of testing is as follows: it is a test circuit that above-mentioned steady current power supply, variable resistor are connected with BMS to be measured, and above-mentioned test circuit is placed in the constant temperature oven.Export the electric current I of a constant to circuit by control module control steady current power supply
1, and variable resistor arranged a resistance value, simultaneously with Thermostat Temperature Control at 25 ℃.Read it the stable back of current indication on the BMS, is designated as I
2Make I
1Deduct I
2, and with the difference of gained divided by I
1, its merchant is, BMS current acquisition functional error.By in the BMS system correction formula being set, can dwindle this error.
Embodiment 2
As shown in Figure 1, present embodiment provides a kind of BMS current acquisition error testing system of test b MS shunt error effect, comprises a current acquisition error testing subsystem: control module and the constant temperature that is connected with control module keep module, electric current output module, BMS shunt testing current module, load blocks.
Wherein, above-mentioned electric current output module is a steady current power supply; It is constant temperature oven that above-mentioned constant temperature keeps module; Above-mentioned BMS shunt testing current module is voltage table; Above-mentioned load blocks is variable resistor.
In the present embodiment, test b MS shunt is as follows to the method for BMS current acquisition functional error influence: it is a test circuit that above-mentioned steady current power supply, variable resistor are connected with BMS shunt to be measured, voltage table is connected in parallel to BMS shunt two ends, and described test circuit is placed in the constant temperature oven.Export the electric current I of a constant to circuit by control module control steady current power supply
1, and variable resistor arranged a resistance value, simultaneously with Thermostat Temperature Control at 25 ℃.After the stable reading on the voltage table it is read, be designated as V.With the internal resistance of V divided by BMS shunt to be measured, the current value I of the BMS shunt of can flowing through
2Make I
1Deduct I
2, and with the difference of gained divided by I
1, its merchant is the BMS shunt to the influence of BMS current acquisition functional error.If the BMS shunt is excessive to the influence of BMS current acquisition functional error, then should not be used further to produce BMS.
More than be wherein specific implementation of the present utility model, it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these apparent replacement forms all belong to protection domain of the present utility model.
Claims (4)
1. BMS current error test macro, comprise control module and the electric current output module, the load blocks that are connected with control module, it is characterized in that: described control module also connects constant temperature and keeps module, and control module, electric current output module, load blocks, constant temperature keep module to form current acquisition error testing subsystem;
And/or
Described control module also connects constant temperature and keeps module and BMS shunt testing current module, and control module, electric current output module, load blocks, constant temperature keep module, BMS shunt testing current module to form BMS shunt error effect test subsystems.
2. BMS current error test macro according to claim 1 is characterized in that: it is constant temperature oven that described constant temperature keeps module.
3. BMS current error test macro according to claim 2, it is characterized in that: described load blocks comprises the variable resistor that at least one is connected with BMS to be measured or BMS shunt to be measured.
4. BMS current error test macro according to claim 2 is characterized in that: BMS shunt testing current module is the voltage table in parallel with the BMS shunt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220699287 CN203117411U (en) | 2012-12-18 | 2012-12-18 | BMS current error test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220699287 CN203117411U (en) | 2012-12-18 | 2012-12-18 | BMS current error test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203117411U true CN203117411U (en) | 2013-08-07 |
Family
ID=48897746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220699287 Expired - Fee Related CN203117411U (en) | 2012-12-18 | 2012-12-18 | BMS current error test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203117411U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675705A (en) * | 2013-12-13 | 2014-03-26 | 惠州市亿能电子有限公司 | Method for redundancy check of currents of power battery |
| CN103713271A (en) * | 2013-12-13 | 2014-04-09 | 惠州市亿能电子有限公司 | BMS current detection unit automatic calibration device and calibration method |
| CN106569005A (en) * | 2016-10-25 | 2017-04-19 | 奇瑞汽车股份有限公司 | Electric vehicle battery current accuracy test method |
| CN109683110A (en) * | 2019-01-22 | 2019-04-26 | 莱茵技术（上海）有限公司 | A kind of LED drive power integrated test system |
-
2012
- 2012-12-18 CN CN 201220699287 patent/CN203117411U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675705A (en) * | 2013-12-13 | 2014-03-26 | 惠州市亿能电子有限公司 | Method for redundancy check of currents of power battery |
| CN103713271A (en) * | 2013-12-13 | 2014-04-09 | 惠州市亿能电子有限公司 | BMS current detection unit automatic calibration device and calibration method |
| CN106569005A (en) * | 2016-10-25 | 2017-04-19 | 奇瑞汽车股份有限公司 | Electric vehicle battery current accuracy test method |
| CN109683110A (en) * | 2019-01-22 | 2019-04-26 | 莱茵技术（上海）有限公司 | A kind of LED drive power integrated test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20191218 |
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| CF01 | Termination of patent right due to non-payment of annual fee |