CN207731114U - A kind of high-precision automatic battery pack simulating device - Google Patents
A kind of high-precision automatic battery pack simulating device Download PDFInfo
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- CN207731114U CN207731114U CN201721890518.2U CN201721890518U CN207731114U CN 207731114 U CN207731114 U CN 207731114U CN 201721890518 U CN201721890518 U CN 201721890518U CN 207731114 U CN207731114 U CN 207731114U
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Abstract
Utility model aims to solve above-mentioned simulated battery group voltage accuracy of the existing technology is low, load capacity is poor, voltage can not transformation the problem of, provide a kind of high-precision automatic battery pack simulating device, including controller, digital isolator and digital analog converter；The controller is connect with host computer, and controller is connected with several digital isolators, and each digital isolator is connect with a digital analog converter；Output end of the output end of digital analog converter as battery simulator；It is connected with SPI interface on controller, and is connect with digital isolator by SPI interface.
Description
Technical field
The utility model is related to field of batteries, more particularly to a kind of high-precision automatic battery pack simulating device.
Background technology
With the development of electric vehicle, battery management system is how to ensure battery to the module closed always in vehicle module
Management can be convenient, flexible test its voltage accuracy under each voltage have become the emphasis and technology hardly possible of industry concern
Point.Existing battery management method and there are the problem of it is as follows：Simulated battery scheme 1：Pass through electric resistance partial pressure by high voltage power supply
After be supplied to battery management system carry out voltage sample, actual test come out voltage value had with obtained voltage is actually divided
Tens millivolts of error has very big hidden danger to battery management system, and adjusting voltage every time can only be by adjusting high-voltage electricity
Source carries out voltage, can not be independently controlled per single-unit simulated battery voltage；Simulated battery scheme 2：By using disconnecting switch
The Pattern completion battery of power supply is simulated, during actual use the ripple voltage of general precision can be in 50mV or more, cell voltage
It is uncontrollable, for the very big influence of battery management system sampling precision；Simulated battery scheme 3：It is programmable high-precision to open
Powered-down source is saved in satisfactory product cost price nearly 1w RMB one, 100 string simulated battery prices will in 100w or so,
It cannot be used for volume production；Simulated battery scheme 4：It is connected using true battery to simulate, battery wants power consumption, battery consumption during the test
Conductance causes voltage change, and in addition true battery causes cell voltage consistency poor in use since capacity volume variance is different.
Utility model content
Utility model aims to solve above-mentioned simulated battery group voltage accuracy of the existing technology is low, energy is loaded
Force difference, voltage can not transformation the problem of, provide a kind of high-precision automatic battery pack simulating device.
Technical solution adopted by the utility model to solve its technical problems is：A kind of high-precision automatic battery pack simulation
Device, including controller, digital isolator and digital analog converter；The controller is connect with host computer, if controller is connected with
Dry digital isolator, each digital isolator are connect with a digital analog converter；The output end of digital analog converter is as battery mould
The output end of quasi- device；It is connected with SPI interface on controller, and is connect with digital isolator by SPI interface.
Preferably, the digital isolator is the isolation SPI communication chips with isolated power supply.
Preferably, the digital isolator is the digital isolator of model ADuM5401.
Preferably, the input supply terminal of the digital isolator is connect with controller, it is digital isolator by controller
Power supply, the out-put supply end of digital isolator are connect with digital analog converter power end, are powered for digital analog converter
Preferably, the signal input part of the digital isolator is connect with SPI interface, signal output end and digital-to-analogue conversion
Device connects.
Preferably, the digital analog converter is the digital analog converter of model AD5683R.
Preferably, the controller selects MCU micro-control units.
Preferably, the controller is connected by the input supply terminal of TDK ferrite beans signal wire and digital isolator
It connects.
The beneficial effects of the utility model：（1）Minimum 1/ is exported using 16 high-precision analog-digital chips of AD5683R
216The battery voltage signal of error, voltage accuracy are improved significantly, and reach ± 2；（2）Use the isolation with isolated power supply
SPI communication chips effectively realize the independent control to single-unit simulated battery voltage by chip select terminal, and quickly adjusting 16 is high-precision
Spend the output voltage of analog-digital converter；（3）The communication between host computer and battery analog controller is realized by controller.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the electric operation control circuit figure of the utility model.
Specific implementation mode
Below by specific embodiment, and in conjunction with attached drawing, the technical solution of the utility model is made further specifically
It is bright.
A kind of high-precision automatic battery pack simulating device, as shown in Figure 1, including controller, digital isolator and digital-to-analogue
Converter.Controller is connect with host computer, is realized by controlling bus CAN logical between host computer and battery analog controller
News.Controller selects MCU micro-control units, is connected with several digital isolators, each digital isolator and a digital-to-analogue conversion
Device connects.
Digital isolator is the isolation SPI communication chips with isolated power supply, model ADuM5401.ADuM5401 chips are
The four-way digital isolator of the isolated DC/DC converters of integrated isoPower, the DC-DC converter is based on ADI companies
ICoupler technologies, using 5.0 V（5.0V input power）Or 3.3 V voltages（3.3V power supply）When, it is possible to provide highest 500
MW adjusts isolation power, in low-power consumption isolation design, without using DC-DC converter is individually isolated, utilize
ICoupler chip-scale transformer technologies, can simultaneously isolated logic signal and DC/DC converters magnetic element, it is possible to provide it is small
Size, completely isolated solution.
As shown in Fig. 2, being connected with SPI interface on MCU micro-control units, and it is connect with digital isolator by SPI interface.
MCU micro-control units are defeated by TDK ferrite beans signal wire, that is, MMZ2012R600ATD25 signal wires and digital isolator
Enter power end connection, TDK ferrite beans signal wire the power supply signal of MCU micro-control units is filtered after be digital isolation
Device is powered.Digital isolator out-put supply end is connect with digital analog converter power end, is powered for digital analog converter.Digital isolator
Signal input part is connect with SPI interface, the signal end connection that signal output end is connect with digital analog converter, MCU micro-control units
Chip select terminal by the way that SPI communication chips are isolated realizes the independent control to single-unit simulated battery voltage.The model of digital analog converter
For AD5683R, 16 high-precision analog-digital chip output minimums 1/2 of AD5683R16The battery voltage signal of error so that
The voltage accuracy of battery pack simulating device is improved significantly.The output end of each digital analog converter as battery simulator one
A output end.
Embodiment described above is a kind of preferable scheme of the utility model, not makees any shape to the utility model
Limitation in formula also has other variants and remodeling on the premise of not exceeding the technical scheme recorded in the claims.
Claims (8)
1. a kind of high-precision automatic battery pack simulating device, which is characterized in that turn including controller, digital isolator and digital-to-analogue
Parallel operation；The controller is connect with host computer, and controller is connected with several digital isolators, each digital isolator and a number
Mode converter connects；Output end of the output end of digital analog converter as battery simulator；SPI interface is connected on controller,
And it is connect with digital isolator by SPI interface.
2. a kind of high-precision automatic battery pack simulating device according to claim 1, which is characterized in that the number isolation
Device is the isolation SPI communication chips with isolated power supply.
3. a kind of high-precision automatic battery pack simulating device according to claim 2, which is characterized in that the number isolation
Device is the digital isolator of model ADuM5401.
4. a kind of high-precision automatic battery pack simulating device according to claim 2, which is characterized in that the number isolation
The input supply terminal of device is connect with controller, by controller be digital isolator power, the out-put supply end of digital isolator with
Digital analog converter power end connects, and powers for digital analog converter.
5. a kind of high-precision automatic battery pack simulating device according to claim 1, which is characterized in that the number isolation
The signal input part of device is connect with SPI interface, and signal output end is connect with digital analog converter.
6. a kind of high-precision automatic battery pack simulating device according to claim 5, which is characterized in that the digital-to-analogue conversion
Device is the digital analog converter of model AD5683R.
7. a kind of high-precision automatic battery pack simulating device according to claim 1, which is characterized in that the controller choosing
With MCU micro-control units.
8. a kind of high-precision automatic battery pack simulating device according to claim 1, which is characterized in that the controller is logical
The input supply terminal for crossing TDK ferrite beans signal wire and digital isolator connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721890518.2U CN207731114U (en) | 2017-12-28 | 2017-12-28 | A kind of high-precision automatic battery pack simulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721890518.2U CN207731114U (en) | 2017-12-28 | 2017-12-28 | A kind of high-precision automatic battery pack simulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207731114U true CN207731114U (en) | 2018-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721890518.2U Active CN207731114U (en) | 2017-12-28 | 2017-12-28 | A kind of high-precision automatic battery pack simulating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109445355A (en) * | 2018-12-13 | 2019-03-08 | 中国电子科技集团公司第五十八研究所 | A kind of isolated form sampling SIP |
-
2017
- 2017-12-28 CN CN201721890518.2U patent/CN207731114U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109445355A (en) * | 2018-12-13 | 2019-03-08 | 中国电子科技集团公司第五十八研究所 | A kind of isolated form sampling SIP |
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Address after: 6 / F, Xintu building, 451 Internet of things street, Binjiang District, Hangzhou City, Zhejiang Province, 310051 Patentee after: Zhejiang Zero run Technology Co.,Ltd. Address before: 6 / F, Xintu building, 451 Internet of things street, Binjiang District, Hangzhou City, Zhejiang Province, 310051 Patentee before: ZHEJIANG LEAPMOTOR TECHNOLOGY Co.,Ltd. |