CN205384360U - BMS current parameter calibrating device - Google Patents
BMS current parameter calibrating device Download PDFInfo
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- CN205384360U CN205384360U CN201620082458.0U CN201620082458U CN205384360U CN 205384360 U CN205384360 U CN 205384360U CN 201620082458 U CN201620082458 U CN 201620082458U CN 205384360 U CN205384360 U CN 205384360U
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Abstract
The utility model discloses a BMS current parameter calibrating device, including connecting gradually the large current output equipment of looping in, first shunt and BM current detection unit. Large current output equipment has positive terminal and negative pole end, the input of first shunt with the positive terminal of large current output equipment is connected, the output of first shunt with the input of BMS current detection unit is connected, the output of BMS current detection unit with the negative pole end of large current output equipment is connected, BMS current parameter calibrating device still includes with first shunt parallel connection, is used for carrying out the voltage detection unit that detects to the partial pressure of first shunt. The utility model discloses but the reference current of refined calculation large current output equipment output for BMS's current parameter calibration provides high accuracy reference current, improves the precision of BMS current parameter calibration greatly and does not require the heavy current equipment or the big current detection equipment of high accuracy, realizes with low costsly.
Description
Technical field
This utility model relates to a kind of calibrating installation, particularly relates to a kind of BMS current parameters calibrating installation.
Background technology
BMS (BatteryManagementSystem, battery management system) one of main function is current detecting, the accuracy of current detecting influences whether SOC (StateofCharge, battery capacity) estimation and current failure detection (charging and discharging currents is too high) etc., BMS producer current parameters calibration process in producing BMS process is proposed harsher requirement by this.
The principle of BMS current parameters calibration is: export big electric current by High-current output equipment as current source, again through checking of great current equipment Inspection High-current output equipment output big electric current as reference current, the big electric current of the current detecting unit detection High-current output equipment output of BMS is as detection electric current, by being compared by the detection electric current of reference current with BMS detection, calibrate the current parameters of BMS according to comparative result.
Therefore, precision in order to ensure BMS current detecting, BMS produces calibration process needs a high-accuracy heavy-current equipment to export high-precision reference current (only minority producer can accomplish), due to this kind of equipment price costliness, the current source that most of BMS producers service precision is poor, such as needing output 500A, the actual output of equipment is likely to only 490A, and reference current accuracy directly affects the calibration accuracy of BMS current parameters.
On the other hand, the checking of great current equipment price measuring big electric current is higher, BMS producer seldom individually purchases checking of great current equipment to be made for ensureing BMS correcting current precision with High-current output equipment simultaneously, and the precision of this current parameters calibration resulting in BMS is unable to reach comparatively ideal state.
In sum, the BMS current parameters calibrating installation of prior art obtains high-precision reference current and carries out the calibration of current parameters for BMS when being unable to reach low cost.
Utility model content
The purpose of this utility model is to overcome weak point of the prior art, it is provided that a kind of low cost, high-precision BMS current parameters calibrating installation.
The purpose of this utility model is achieved through the following technical solutions:
A kind of BMS current parameters calibrating installation, for being calibrated BMS current parameters, including being in turn connected to form the High-current output equipment in loop, the first diverter and BMS current detecting unit；
Described High-current output equipment has positive terminal and negative pole end, the input of described first diverter is connected with the positive terminal of described High-current output equipment, the outfan of described first diverter is connected with the input of described BMS current detecting unit, and the outfan of described BMS current detecting unit is connected with the negative pole end of described High-current output equipment；
Described BMS current parameters calibrating installation also includes being connected in parallel with the first diverter, voltage detection unit for the dividing potential drop of the first diverter is detected.
As this utility model one preferred version, described first diverter model is 1000A/100mv.
As this utility model one preferred version, described BMS current detecting unit is Hall element.
As this utility model one preferred version, described BMS current detecting unit is the second diverter.
As this utility model one preferred version, described voltage detection unit is circuit tester.
As this utility model one preferred version, described circuit tester voltage acquisition precision is 0.001mv.
Compared with prior art, this utility model has the advantage that
1, this utility model replaces the high-accuracy heavy-current detection equipment of prior art by the first diverter and voltage detection unit, can accurately calculate the reference current of High-current output equipment output, current parameters for BMS calibrates offer high-precision reference electric current, is greatly improved the precision of BMS current parameters calibration.
2, this utility model adopts the first diverter and voltage detection unit accurately to calculate the reference current of High-current output equipment output, makes the calibration of BMS current parameters not require high-precision high-current equipment or checking of great current equipment, it is achieved cost is low.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the BMS current parameters calibrating installation of this utility model one embodiment.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, this utility model is described in further detail, but embodiment of the present utility model is not limited to this.
As it is shown in figure 1, be the schematic diagram of the BMS current parameters calibrating installation 10 of this utility model one embodiment.A kind of BMS current parameters calibrating installation 10, for being calibrated the current parameters of BMS, including High-current output equipment the 100, first diverter 200 and the BMS current detecting unit 300 that are in turn connected to form loop.
High-current output equipment 100 has positive terminal 110 and negative pole end 120, the input of the first diverter 200 is connected with the positive terminal 110 of High-current output equipment, the outfan of the first diverter 200 is connected with the input of BMS current detecting unit 300, and the outfan of BMS current detecting unit 300 is connected with the negative pole end 120 of High-current output equipment 100.BMS current parameters calibrating installation 10 also includes being connected in parallel with the first diverter 200, voltage detection unit 400 for the dividing potential drop of the first diverter 200 is detected.In the present embodiment, described voltage detection unit 400 is circuit tester.
In this utility model, between High-current output equipment 100 to BMS current detecting unit 300, the first diverter 200 is accessed by adopting, then use circuit tester that the first diverter 200 is carried out voltage detecting, the voltage detected finally by circuit tester and the resistance of diverter, to the reference current value that converts, obtain high-precision reference current value.In actual applications, can by the resistance value of the first diverter 200 be arranged in host computer, and by the magnitude of voltage input of circuit tester detection to host computer, ginseng is calculated by examining current value by the magnitude of voltage of the host computer resistance according to the first diverter 200 and circuit tester detection, again reference current value is issued in BMS, the current value that reference current value and current detecting unit thereof detect is compared by BMS, calibrates current parameters according to comparative result.Can also by the resistance value of the first diverter 200 be arranged in BMS, and by the magnitude of voltage input of circuit tester detection to BMS, the magnitude of voltage detected by the BMS resistance according to the first diverter 200 and circuit tester calculates ginseng by examining current value, again the current value that reference current value and current detecting unit thereof detect is compared, calibrate current parameters according to comparative result.
When the model of the first diverter 200 adopted is 1000A/100mv, namely the first diverter 200 exports electric current when being 1000A, the voltage at the first diverter 200 two ends is 100mv, so when the voltage at point first-class device 200 two ends is 1mv, corresponding output electric current is 10A.
So when the first diverter 200 that the circuit tester 400 adopting voltage acquisition precision to be 0.001mv goes test model to be 1000A/100mv, the current detection accuracy that can be obtained the first diverter 200 two ends by the conversion rule of above-mentioned 1mv voltage correspondence 10A electric current is 10mA, thus reach high-precision current detecting purpose, thus meeting the demand of BMS current parameters calibration accuracy.
So, more high-precision circuit tester is adopted to remove the voltage at test the first diverter 200 two ends, will be more high by the precision of the obtained reference current that converts, thus can meet the needs of the BMS current parameters calibration accuracy of different size, substantially increase practicality of the present utility model.
In this utility model one embodiment, BMS current detecting unit 300 is Hall element.In another embodiment of the present utility model, BMS current detecting unit 300 is the second diverter.
Above-described embodiment is this utility model preferably embodiment; but embodiment of the present utility model is also not restricted to the described embodiments; other any without departing from the change made under spirit of the present utility model and principle, modification, replacement, combination, simplification; all should be the substitute mode of equivalence, be included within protection domain of the present utility model.
Claims (6)
1. a BMS current parameters calibrating installation, for being calibrated BMS current parameters, it is characterised in that include being in turn connected to form the High-current output equipment in loop, the first diverter and BMS current detecting unit；
Described High-current output equipment has positive terminal and negative pole end, the input of described first diverter is connected with the positive terminal of described High-current output equipment, the outfan of described first diverter is connected with the input of described BMS current detecting unit, and the outfan of described BMS current detecting unit is connected with the negative pole end of described High-current output equipment；
Described BMS current parameters calibrating installation also includes being connected in parallel with the first diverter, voltage detection unit for the dividing potential drop of the first diverter is detected.
2. BMS current parameters calibrating installation according to claim 1, it is characterised in that described first diverter model is 1000A/100mv.
3. BMS current parameters calibrating installation according to claim 1, it is characterised in that described BMS current detecting unit is Hall element.
4. BMS current parameters calibrating installation according to claim 1, it is characterised in that described BMS current detecting unit is the second diverter.
5. BMS current parameters calibrating installation according to claim 1, it is characterised in that described voltage detection unit is circuit tester.
6. BMS current parameters calibrating installation according to claim 5, it is characterised in that described circuit tester voltage acquisition precision is 0.001mv.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620082458.0U CN205384360U (en) | 2016-01-26 | 2016-01-26 | BMS current parameter calibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620082458.0U CN205384360U (en) | 2016-01-26 | 2016-01-26 | BMS current parameter calibrating device |
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| CN205384360U true CN205384360U (en) | 2016-07-13 |
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| CN201620082458.0U Active CN205384360U (en) | 2016-01-26 | 2016-01-26 | BMS current parameter calibrating device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107688161A (en) * | 2017-06-29 | 2018-02-13 | 惠州市蓝微新源技术有限公司 | The calibration of BMS a kind of and method of testing |
| CN111007393A (en) * | 2020-03-10 | 2020-04-14 | 广东电网有限责任公司佛山供电局 | High-voltage circuit breaker loop resistance test circuit |
-
2016
- 2016-01-26 CN CN201620082458.0U patent/CN205384360U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107688161A (en) * | 2017-06-29 | 2018-02-13 | 惠州市蓝微新源技术有限公司 | The calibration of BMS a kind of and method of testing |
| CN111007393A (en) * | 2020-03-10 | 2020-04-14 | 广东电网有限责任公司佛山供电局 | High-voltage circuit breaker loop resistance test circuit |
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