CN203859556U - Lithium battery management device based on clamping voltage balance - Google Patents
Lithium battery management device based on clamping voltage balance Download PDFInfo
- Publication number
- CN203859556U CN203859556U CN201420201608.6U CN201420201608U CN203859556U CN 203859556 U CN203859556 U CN 203859556U CN 201420201608 U CN201420201608 U CN 201420201608U CN 203859556 U CN203859556 U CN 203859556U
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- circuit
- controller
- battery management
- lithium battery
- pincers
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The utility model relates to the technical field of battery management, in particular to a lithium battery management device based on clamping voltage balance. The lithium battery management device based on clamping voltage balance is characterized by comprising a controller, a charging circuit connected with the controller, a clamping voltage balance circuit connected with the controller, an overvoltage protection circuit connected with the controller, an overcurrent protection circuit connected with the controller and a temperature detection circuit connected with the controller, wherein a voltage-variable circuit, a voltage-reduction rectifying circuit and at least two sub charging loops are arranged in the charging circuit, the voltage-reduction rectifying circuit is connected with the output end of the voltage-variable circuit, the sub charging loops are connected with the output end of the voltage-reduction rectifying circuit, a relay is arranged in each sub charging loop, each relay is connected with the controller and used for controlling the connection and disconnection of the corresponding sub charging loop, and the clamping voltage balance circuit comprises at least two voltage balance loops and a reference power supply which is used for supplying a voltage threshold to each voltage balance loop. Compared with the prior art, the lithium battery management device based on clamping voltage balance has the remarkable advantages of being reasonable in structure, safe, reliable and the like.
Description
Technical field:
The utility model relates to battery management technical field, and specifically one can make many group cells equalizing charge in battery pack, and then improves the lithium battery management devices based on pincers-pressed type equilibrium of efficiency for charge-discharge and battery.
Background technology:
Along with the development of microelectric technique, power supply has been proposed to very high requirement, the significant advantages such as lithium battery is high with its operating voltage, energy density is large, volume is little, self-discharge rate is low, memory-less effect, obtain applying more and more widely.The voltage of single lithium battery cell is limited, in order to meet the user demand of the electrokinetic cells such as such as electric motor car, the general form that multiple batteries series connection is used that adopts of existing rechargeable battery realizes, and due to the difference of each cell on self-discharge characteristics in battery pack, can cause each cell its dump energy difference after electric discharge finishes in battery pack, cause the difference of the residual capacity of cell in battery pack, this different can be outstanding all the more along with discharging and recharging the increase of number of times, cause the reduction of battery pack whole volume and the shortening in useful life, very harmful to rechargeable battery.In addition, battery pack produces heat in charge and discharge process, too high when heat, easily damages battery, the useful life of image battery pack.
Summary of the invention:
The utility model, for the shortcoming and defect existing in prior art, proposes one and can make many group cells equalizing charge in battery pack, and then improves the lithium battery management devices based on pincers-pressed type equilibrium of efficiency for charge-discharge and battery.
The utility model can reach by following measures:
A kind of lithium battery management devices based on pincers-pressed type equilibrium, it is characterized in that comprising controller, the charging circuit being connected with controller, the pincers that are connected with controller are pressed equalizing circuit, the overvoltage crowbar being connected with controller, the current foldback circuit being connected with controller and the temperature sensing circuit being connected with controller, in wherein said charging circuit, be provided with transforming circuit, the step-down rectifying circuit being connected with transforming circuit output, the at least two way charge circuits that are connected with step-down rectifying circuit output, in every sub-charge circuit, be equipped be connected with controller for controlling the relay of corresponding sub-charge circuit break-make, described pincers are pressed equalizing circuit to comprise two-way electric voltage equalization loop at least and are sent into the reference power source of voltage threshold for electric voltage equalization loop, Xiang Mei road, wherein in electric voltage equalization loop, every road, be provided with the comparator of series connection successively, equalizer switch, adjusting resistance, and for exporting the balanced detector that returns upper voltage data, wherein equalizer switch adopts relay to realize, the control contact of equalizer switch is connected with controller, the output of detector is connected with controller.
In the utility model middle controller, be provided with and adopt the control chip of chip microcontroller and the address encoding circuit being connected with control chip, address encoding circuit for the above sub-charging circuit of the two-way to charging circuit and pincers press in equalizing circuit electric voltage equalization loop more than two-way one by one correspondence be assigned to geocoding.
In the utility model, temperature sensing circuit is provided with temperature sensor, and the signal output part of temperature sensor is connected with controller, for the temperature information to controller feedback battery pack.
In the utility model, be also provided with the sound light alarming circuit being connected with controller, sound light alarming circuit for outwards exporting sound and light alarm signal under abnormality.
In the utility model middle controller, be provided with the communication interface circuit being connected with microcontroller chip, for connecting lithium battery management devices and outside host computer.
The utility model in use, cell in battery pack to be charged is connected with charging circuit neutron charge circuit, sub-charge circuit more than two-way charges to cell in battery pack respectively, pincers press electric voltage equalization the loop more than two-way in equalizing circuit to be connected on respectively corresponding cell two ends simultaneously, comparator in electric voltage equalization loop gathers the output voltage of this cell and the output voltage of reference power source, and export comparative result, detector on electric voltage equalization loop can adopt the instrument such as voltmeter or ammeter to realize, parameter on the electric voltage equalization loop of collection is sent into controller, controller to interpretation of result after, control the disconnection of the above sub-charging circuit of two-way in charging circuit, make each cell in lithium battery group to be charged can obtain balanced magnitude of voltage.
The utility model compared with prior art, can efficient balance battery pack in the charging voltage value of each cell, and then effectively extend the useful life of battery pack, there is the significant advantages such as rational in infrastructure, safe and reliable.
Brief description of the drawings:
Accompanying drawing 1 is structural representation of the present utility model.
Accompanying drawing 2 is structural representations of charging circuit in the utility model.
Accompanying drawing 3 is structural representations that in the utility model, pincers are pressed equalizing circuit.
Reference numeral: controller 1, charging circuit 2, pincers are pressed equalizing circuit 3, overvoltage crowbar 4, current foldback circuit 5, temperature sensing circuit 6, transforming circuit 7, step-down rectifying circuit 8, sub-charge circuit 9, relay 10, electric voltage equalization loop 11, reference power source 12, comparator 13, equalizer switch 14, adjusting resistance 15, detector 16.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is further described.
As accompanying drawing 1, shown in accompanying drawing 2 and accompanying drawing 3, the utility model proposes a kind of lithium battery management devices based on pincers-pressed type equilibrium, it is characterized in that comprising controller 1, the charging circuit 2 being connected with controller 1, the pincers that are connected with controller 1 are pressed equalizing circuit 3, the overvoltage crowbar 4 being connected with controller 1, the current foldback circuit 5 being connected with controller 1 and the temperature sensing circuit 6 being connected with controller 1, in wherein said charging circuit 2, be provided with transforming circuit 7, the step-down rectifying circuit 8 being connected with transforming circuit 7 outputs, the at least two way charge circuits 9 that are connected with step-down rectifying circuit 8 outputs, in every sub-charge circuit 9, be equipped be connected with controller 1 for controlling the relay 10 of corresponding sub-charge circuit break-make, described pincers are pressed equalizing circuit 3 to comprise two-way electric voltage equalization loop 11 at least and are sent into the reference power source 12 of voltage threshold for electric voltage equalization loop, Xiang Mei road 11, wherein in electric voltage equalization loop, every road 11, be provided with the comparator 13 of series connection successively, equalizer switch 14, adjusting resistance 15, and for exporting the balanced detector 16 that returns upper voltage data, wherein equalizer switch 14 adopts relay to realize, the control contact of equalizer switch is connected with controller 1, the output of detector 16 is connected with controller.
In the utility model middle controller 1, be provided with and adopt the control chip of chip microcontroller and the address encoding circuit being connected with control chip, address encoding circuit for the above sub-charging circuit of the two-way to charging circuit and pincers press in equalizing circuit electric voltage equalization loop more than two-way one by one correspondence be assigned to geocoding.
In the utility model, temperature sensing circuit 6 is provided with temperature sensor, and the signal output part of temperature sensor is connected with controller 1, for feed back the temperature information of battery pack to controller 1.
In the utility model, be also provided with the sound light alarming circuit being connected with controller 1, sound light alarming circuit for outwards exporting sound and light alarm signal under abnormality.
In the utility model middle controller 1, be provided with the communication interface circuit being connected with microcontroller chip, for connecting lithium battery management devices and outside host computer.
The utility model in use, cell in battery pack to be charged is connected with charging circuit 2 neutron charge circuits 9, sub-charge circuit 9 more than two-way charges to cell in battery pack respectively, pincers press electric voltage equalization the loop 11 more than two-way in equalizing circuit 3 to be connected on respectively corresponding cell two ends simultaneously, comparator in electric voltage equalization loop 11 gathers the output voltage of this cell and the output voltage of reference power source 12, and export comparative result, detector on electric voltage equalization loop 11 can adopt the instrument such as voltmeter or ammeter to realize, parameter on the electric voltage equalization loop of collection is sent into controller 1, controller 1 is to after interpretation of result, control the disconnection of the above sub-charge circuit 9 of two-way in charging circuit 2, make each cell in lithium battery group to be charged can obtain balanced magnitude of voltage.
The utility model compared with prior art, can efficient balance battery pack in the charging voltage value of each cell, and then effectively extend the useful life of battery pack, there is the significant advantages such as rational in infrastructure, safe and reliable.
Claims (5)
1. the lithium battery management devices based on pincers-pressed type equilibrium, it is characterized in that comprising controller, the charging circuit being connected with controller, the pincers that are connected with controller are pressed equalizing circuit, the overvoltage crowbar being connected with controller, the current foldback circuit being connected with controller and the temperature sensing circuit being connected with controller, in wherein said charging circuit, be provided with transforming circuit, the step-down rectifying circuit being connected with transforming circuit output, the at least two way charge circuits that are connected with step-down rectifying circuit output, in every sub-charge circuit, be equipped be connected with controller for controlling the relay of corresponding sub-charge circuit break-make, described pincers are pressed equalizing circuit to comprise two-way electric voltage equalization loop at least and are sent into the reference power source of voltage threshold for electric voltage equalization loop, Xiang Mei road, wherein in electric voltage equalization loop, every road, be provided with the comparator of series connection successively, equalizer switch, adjusting resistance, and for exporting the balanced detector that returns upper voltage data, wherein equalizer switch adopts relay to realize, the control contact of equalizer switch is connected with controller, the output of detector is connected with controller.
2. a kind of lithium battery management devices based on pincers-pressed type equilibrium according to claim 1, is characterized in that being provided with and adopting the control chip of chip microcontroller and the address encoding circuit being connected with control chip in controller.
3. a kind of lithium battery management devices based on pincers-pressed type equilibrium according to claim 1, is characterized in that temperature sensing circuit is provided with temperature sensor, and the signal output part of temperature sensor is connected with controller.
4. a kind of lithium battery management devices based on pincers-pressed type equilibrium according to claim 1, is characterized in that being also provided with the sound light alarming circuit being connected with controller.
5. a kind of lithium battery management devices based on pincers-pressed type equilibrium according to claim 1, is characterized in that being provided with in middle controller the communication interface circuit being connected with microcontroller chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420201608.6U CN203859556U (en) | 2014-04-24 | 2014-04-24 | Lithium battery management device based on clamping voltage balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420201608.6U CN203859556U (en) | 2014-04-24 | 2014-04-24 | Lithium battery management device based on clamping voltage balance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203859556U true CN203859556U (en) | 2014-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420201608.6U Expired - Fee Related CN203859556U (en) | 2014-04-24 | 2014-04-24 | Lithium battery management device based on clamping voltage balance |
Country Status (1)
| Country | Link |
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| CN (1) | CN203859556U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872741A (en) * | 2014-04-02 | 2014-06-18 | 芜湖三木电子科技有限公司 | Lithium battery management device based on clamping voltage balance |
-
2014
- 2014-04-24 CN CN201420201608.6U patent/CN203859556U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872741A (en) * | 2014-04-02 | 2014-06-18 | 芜湖三木电子科技有限公司 | Lithium battery management device based on clamping voltage balance |
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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: 20141001 Termination date: 20150424 |
|
| EXPY | Termination of patent right or utility model |