CN203151082U - Charge-and-discharge intelligent protector for plumbic acid battery pack used for electric vehicle - Google Patents
Charge-and-discharge intelligent protector for plumbic acid battery pack used for electric vehicle Download PDFInfo
- Publication number
- CN203151082U CN203151082U CN 201320159007 CN201320159007U CN203151082U CN 203151082 U CN203151082 U CN 203151082U CN 201320159007 CN201320159007 CN 201320159007 CN 201320159007 U CN201320159007 U CN 201320159007U CN 203151082 U CN203151082 U CN 203151082U
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- charge
- electric vehicle
- discharge
- acid battery
- battery pack
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Abstract
The utility model discloses a charge-and-discharge intelligent protector for a plumbic acid battery pack used for an electric vehicle. The charge-and-discharge intelligent protector for the plumbic acid battery pack used for the electric vehicle is mainly composed of a charging balancing MOS switch circuit, a battery unit voltage detecting circuit, a charge-and-discharge MOSFET switch and a low-power-consumption microprocessor connected together successively. The charging balancing MOS switch circuit is composed of an MOS tube and a power resistor. The battery unit voltage detecting circuit is composed of resistance potential-divider networks. The charge-and-discharge MOSFET switch is composed of two groups of power MOSFETs connected in series, wherein one group of the power MOSFETs forms a charging protection switch while the other group of the power MOSFETs forms a discharging protection switch. The charge-and-discharge intelligent protector for the plumbic acid battery pack used for the electric vehicle provided by the utility model can protect the battery packs from damages and the service lifetime of the charge-and-discharge intelligent protector for the plumbic acid battery pack used for the electric vehicle is prolonged.
Description
Technical field
The utility model belongs to the electroporation field, relates to a kind of electric vehicle lead-acid battery group and discharges and recharges intellective protector.
Background technology
Electric motor car lead-acid battery group of the prior art discharges and recharges not protection, and battery pack overcharge and overdischarge often cause battery pack to be damaged or shorten useful life.
The utility model content
In order to overcome defective of the prior art, the utility model provides a kind of electric vehicle lead-acid battery group to discharge and recharge intellective protector, and batteries charging electric current, charging voltage are limited, and cell balancing is charged.To the charging interval, temperature, the charging current rate of change is monitored and is protected.Discharging current, discharge minimum voltage are detected, reach the protection thresholding, cut off output automatically, the protection battery pack is not damaged because of overdischarge.
Its technical scheme is as follows:
A kind of electric vehicle lead-acid battery group discharges and recharges intellective protector; mainly by charge balancing MOS switching circuit, battery cell voltage testing circuit, discharge and recharge switch mosfet and the low-power consumption microprocessor connects to form successively; described charge balancing MOS switching circuit is made up of metal-oxide-semiconductor and power resistor; described battery cell voltage testing circuit is made up of resistance pressure-dividing network; the described switch mosfet that discharges and recharges is composed in series by two groups of power MOSFETs, and one group is that charge protection switch, another group are discharge protection switch.
The beneficial effects of the utility model:
The utility model electric vehicle lead-acid battery group discharges and recharges intellective protector batteries charging electric current, charging voltage is limited, and cell balancing is charged.To the charging interval, temperature, the charging current rate of change is monitored and is protected.Discharging current, discharge minimum voltage are detected, reach the protection thresholding, cut off output automatically, protect battery pack not because overdischarge damages, thereby prolong the life-span of battery pack.
Description of drawings
Fig. 1 is the structural representation that the utility model electric vehicle lead-acid battery group discharges and recharges intellective protector.
Embodiment
Below in conjunction with the drawings and specific embodiments the technical solution of the utility model is done explanation in further detail.
With reference to Fig. 1; a kind of electric vehicle lead-acid battery group discharges and recharges intellective protector; mainly by charge balancing MOS switching circuit, battery cell voltage testing circuit, discharge and recharge switch mosfet and the low-power consumption microprocessor connects to form successively; described charge balancing MOS switching circuit is made up of metal-oxide-semiconductor and power resistor; under the control of microprocessor, when charging, each battery unit is carried out equalizing charge.Described battery cell voltage testing circuit directly is connected with each battery unit of lead-acid battery group, by power resistor, and small-power MOS switching tube, resistance pressure-dividing network is formed, and the voltage of each battery unit is sent to microprocessor.The described switch mosfet that discharges and recharges is composed in series by two groups of power MOSFETs, and one group is that charge protection switch, another group are discharge protection switch, and the electric current that flows through metal-oxide-semiconductor is detected.Under the control of microprocessor, control discharging and recharging.Described low-power consumption microprocessor to charge balancing MOS switching circuit, battery cell voltage testing circuit, the signal that discharges and recharges switch mosfet and provide handles in real time, detect control according to operating state to discharging and recharging, and when unusual, implement protection.
The utility model electric vehicle lead-acid battery group discharges and recharges in the intelligent protection implement body application process; during charging; detect each battery cell voltage by the battery cell voltage testing circuit; the low-power consumption microprocessor is according to the height of voltage in the charging process; the output control signal carries out flow-dividing control to charging current for charge balancing MOS switching circuit in real time, reaches the purpose of equalizing charge.In whole charging process, microprocessor detects charging voltage, charging current size all the time, in case charging overvoltage, overcurrent, overtime etc. occur, turn-offs immediately and discharges and recharges switch mosfet accordingly, the protection battery.
During discharge, the low-power consumption microprocessor detects the size of discharging current by discharging and recharging switch mosfet, in case above the electric current of setting, send control signal immediately, turn-offs and discharges and recharges switch mosfet, reaches the purpose of overcurrent protection.
Owing to used the low-power consumption microprocessor, can set overcurrent, overvoltage protection thresholding, set overtime guard time arbitrarily, and the voice output fault type etc.
The above; it only is the preferable embodiment of the utility model; protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses, the simple change of the technical scheme that can obtain apparently or equivalence are replaced and are all fallen in the protection range of the present utility model.
Claims (1)
1. an electric vehicle lead-acid battery group discharges and recharges intellective protector; it is characterized in that; mainly by charge balancing MOS switching circuit, battery cell voltage testing circuit, discharge and recharge switch mosfet and the low-power consumption microprocessor connects to form successively; described charge balancing MOS switching circuit is made up of metal-oxide-semiconductor and power resistor; described battery cell voltage testing circuit is made up of resistance pressure-dividing network; the described switch mosfet that discharges and recharges is composed in series by two groups of power MOSFETs, and one group is that charge protection switch, another group are discharge protection switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320159007 CN203151082U (en) | 2013-04-02 | 2013-04-02 | Charge-and-discharge intelligent protector for plumbic acid battery pack used for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320159007 CN203151082U (en) | 2013-04-02 | 2013-04-02 | Charge-and-discharge intelligent protector for plumbic acid battery pack used for electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203151082U true CN203151082U (en) | 2013-08-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320159007 Expired - Fee Related CN203151082U (en) | 2013-04-02 | 2013-04-02 | Charge-and-discharge intelligent protector for plumbic acid battery pack used for electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203151082U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021998A (en) * | 2015-08-11 | 2015-11-04 | 深圳市亿通科技有限公司 | Battery voltage detection device and electronic equipment |
| CN110816302A (en) * | 2019-10-23 | 2020-02-21 | 无锡赛盈动力科技有限公司 | Charging control method for multi-module intelligent driving system of large and medium power electric vehicle |
-
2013
- 2013-04-02 CN CN 201320159007 patent/CN203151082U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021998A (en) * | 2015-08-11 | 2015-11-04 | 深圳市亿通科技有限公司 | Battery voltage detection device and electronic equipment |
| CN110816302A (en) * | 2019-10-23 | 2020-02-21 | 无锡赛盈动力科技有限公司 | Charging control method for multi-module intelligent driving system of large and medium power electric vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CU01 | Correction of utility model patent |
Correction item: Inventor Correct: Lan Xiaohong Liu Jun Fu Zhiyu False: Lan Xiaohong Liu Jun Fu Zhijun Number: 34 Page: The title page Volume: 29 |
|
| CU03 | Correction of utility model patent gazette |
Correction item: Inventor Correct: Lan Xiaohong Liu Jun Fu Zhiyu False: Lan Xiaohong Liu Jun Fu Zhijun Number: 34 Volume: 29 |
|
| ERR | Gazette correction |
Free format text: CORRECT: INVENTOR; FROM: LAN XIAOHONG LIU JUN FU ZHIJUN TO: LAN XIAOHONG LIU JUN FU ZHIYU |
|
| RECT | Rectification | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20140402 |