CN202513261U - Heat management device for power battery of electric automobile - Google Patents
Heat management device for power battery of electric automobile Download PDFInfo
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- CN202513261U CN202513261U CN2012201027987U CN201220102798U CN202513261U CN 202513261 U CN202513261 U CN 202513261U CN 2012201027987 U CN2012201027987 U CN 2012201027987U CN 201220102798 U CN201220102798 U CN 201220102798U CN 202513261 U CN202513261 U CN 202513261U
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- heating
- power battery
- switching tube
- electric automobile
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a heat management device for a power battery of an electric automobile. The heat management device comprises a central processing unit, a power supply, a heating module, a heating control module and a temperature detection module. The central processing unit is respectively connected with the heating control module and the temperature detection module, the heating module is respectively connected with the power supply and the heating control module, and the temperature detection module and the heating module are arranged on the power battery of the electric automobile. The heat management device can collect temperature of the power battery when the power battery works. When the temperature of the power battery is smaller than the allowed lowest temperature value of the power battery, the power battery is heated so that the working temperature of the power battery is within an allowed temperature range, the using performance of the power battery is guaranteed, and the service life of the power battery is prolonged.
Description
Technical field
The utility model relates to electric automobile power battery administrative skill field, relates in particular to a kind of electric automobile power battery heat management device.
Background technology
At present, the capacity and the temperature of the electrokinetic cell of electric automobile have direct relation, when temperature is lower than certain value, can cause the electrokinetic cell capacity to descend.In practical application, electrokinetic cell recycles at low temperatures and shortens the useful life that can cause electrokinetic cell.Consider to substitute the variations in temperature of bringing season that be necessary to design a kind of electric automobile power battery heat management device, the assurance electrokinetic cell is worked under the low temperature in the winter time in suitable temperature range.
Chinese patent publication number CN1606189; Open day on 04 13rd, 2005; The name of invention is called power battery management system; This application case discloses a kind of power battery management system, and it comprises one group of rechargeable battery module, main power source supervising device, input and display device and the communication bus that is connected each parts.The main power source supervising device is provided with 220VAC charging port, output port of power source and vehicle-mounted 12V power port, and the charge and discharge process of each battery module can kept watch on and control to this main power source supervising device.Each battery module is provided with independently charge-discharge circuit; This charge-discharge circuit comprises charge circuit, discharge loop and a micro-control unit MCU, and this micro-control unit MCU connects and Control current signal acquisition circuit, voltage signal acquisition circuit, temperature signal collection circuit, charging protection control circuit and discharge prevention control circuit.Its weak point is that when ambient temperature was low, the working temperature that can't guarantee electrokinetic cell caused the electrokinetic cell capacity to descend in the temperature range that allows, the shortening in useful life.
The utility model content
The purpose of the utility model be overcome when electrokinetic cell when ambient temperature is lower than it and allows to work under minimum temperature value; The electrokinetic cell capacity descends, and the technical problem that shorten useful life provides a kind of electric automobile power battery heat management device; It can gather electrokinetic cell when electrokinetic cell is worked temperature; When temperature of powered cell is lower than the minimum temperature value of its permission, electrokinetic cell is heated, the working temperature that makes electrokinetic cell is in the temperature range that allows; Guarantee the serviceability of electrokinetic cell, prolonged the useful life of electrokinetic cell.
In order to address the above problem, the utility model adopts following technical scheme to be achieved:
A kind of electric automobile power battery heat management device of the utility model; Comprise CPU, power supply, heating module, heating control module and temperature detecting module; Said CPU links to each other with temperature detecting module with heating control module respectively; Said heating module links to each other with heating control module with power supply respectively, and said temperature detecting module and heating module are arranged on the electric automobile power battery.
In the present technique scheme, power supply is the heating module power supply.Temperature detecting module detects the temperature value of electrokinetic cell, and sends it to CPU, and CPU is judged the temperature value that receives.When temperature value was lower than preset threshold, CPU was sent enabling signal and is given heating control module, and heating control module starts heating module heating electrokinetic cell; When temperature value was higher than preset threshold, CPU was sent stop signal and is given heating control module, and heating control module control heating module stops to heat electrokinetic cell.
As preferably; Said heating control module comprises switching tube and switching tube drive circuit; Said power supply, heating module and switching tube are connected into a heating circuit; Said switching tube drive circuit one end links to each other with the switch controlled end, and the switching tube drive circuit other end links to each other with CPU.CPU is through the break-make of switching tube drive circuit control switch pipe, thus the work of control heating module.
As preferably, said switching tube is a N channel enhancement FET.N channel enhancement FET has that noise is little, low in energy consumption, the advantage of safety operation area field width.
As preferably, said a kind of electric automobile power battery heat management device also comprises protective tube, and said power supply, heating module, protective tube and switching tube are connected into a heating circuit.Protective tube plays overcurrent protection in heating circuit.
As preferably; Said heating control module comprises that also switching tube drives buffer circuit; The end that said switching tube drives buffer circuit links to each other with switching tube drive circuit input; The other end that switching tube drives buffer circuit links to each other with CPU, and said switching tube drive circuit output links to each other with the switch controlled end.Switching tube drives buffer circuit can suppress system noise, improves antijamming capability.
As preferably, said heating control module also comprises loop detection circuit, and said loop detection circuit one end links to each other with CPU, and the other end of loop detection circuit links to each other with an end of heating module.Loop detection circuit detects whether normally of heating circuit.
As preferably; Said heating control module also comprises loop detection buffer circuit; Said loop is detected buffer circuit one end and is linked to each other with the loop detection circuit output; The other end that buffer circuit is detected in the loop links to each other with CPU, and said loop detection circuit input links to each other with an end of heating module.Buffer circuit is detected in the loop can suppress system noise, improves antijamming capability.
As preferably; Said a kind of electric automobile power battery heat management device also comprises voltage detection module; Said voltage detection module links to each other with CPU; Said power supply is composed in series by several electrokinetic cells of electric automobile, and said voltage detection module links to each other with several electrokinetic cells through the voltage acquisition line.Voltage detection module detects the voltage of each electrokinetic cell, and when 1 or 1 above electrokinetic cell magnitude of voltage were lower than minimum discharge voltage, heating module was not worked, and avoids damaging electrokinetic cell.
As preferably; Said temperature detecting module and voltage detection module are the part of the BMS system of management battery in the electric automobile; Said CPU links to each other with the main control chip of BMS system through the CAN transmission circuit, and said temperature detecting module links to each other with main control chip respectively with voltage detection module.The voltage and the temperature information of each electrokinetic cell of BMS system monitoring, and communicate by letter with CPU through the CAN transmission circuit, the heating control command sent.
As preferably, said heating module is a ptc heater.Ptc heater have constant temperature heating, energy-conservation, security performance good, the advantage of long service life.
The beneficial effect of the utility model is: the temperature that when electrokinetic cell is worked, can gather electrokinetic cell; When temperature of powered cell is lower than the minimum temperature value of its permission; Electrokinetic cell is heated; The working temperature that makes electrokinetic cell has guaranteed the serviceability of electrokinetic cell in the temperature range that allows, prolonged the useful life of electrokinetic cell.
Description of drawings
Fig. 1 is that a kind of circuit theory of the utility model connects block diagram.
Among the figure: 1, CPU, 2, power supply, 3, heating module, 4, heating control module; 5, temperature detecting module, 6, switching tube, 7, the switching tube drive circuit, 8, protective tube; 9, switching tube drives buffer circuit, and 10, loop detection circuit, 11, the loop detects buffer circuit, 12, voltage detection module; 13, electrokinetic cell, 14, the BMS system, 15, the CAN transmission circuit, 16, main control chip.
Embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technical scheme of the utility model.
Embodiment: a kind of electric automobile power battery heat management device of present embodiment; As shown in Figure 1; Comprise that 14,6 heating modules of 15,1 BMS system of 2,1 CAN transmission circuit of 1,1 power supply of 1 CPU 3 reach and heating module 3 corresponding 6 heating control module 4 and 6 protective tubes 8; Power supply 2 is composed in series by 6 electrokinetic cells 13 of electric automobile; Heating control module 4 comprises that switching tube 6, switching tube drive circuit 7, switching tube drive buffer circuit 9, loop detection circuit 10 and loop and detect buffer circuit 11; BMS system 14 comprises main control chip 16, temperature detecting module 5 and voltage detection module 12, and heating module 3 is a ptc heater, and switching tube 6 is a N channel enhancement FET.The positive pole of power supply 2 links to each other with 6 heating module 3 one ends; Protective tube 8 one ends that the other end of 6 heating modules 3 is corresponding with it respectively link to each other; The other end of 6 protective tubes 8 links to each other with the drain electrode of its corresponding switch pipe 6 respectively, and the source electrode of 6 switching tubes 6 links to each other with the negative pole of power supply 2.The output of CPU 1 drives buffer circuit 9 through 6 switching tubes and links to each other with the input of 6 switching tube drive circuits 7; The output of 6 switching tube drive circuits 7 links to each other with the grid of its corresponding switch pipe 6 respectively; The input of CPU 1 detects buffer circuit 11 through 6 loops and links to each other with the output of 6 loop detection circuits 10, and the input of 6 loop detection circuits 10 links to each other with the drain electrode of its corresponding switch pipe 6 respectively.CPU 1 is communicated by letter with main control chip 16 through CAN transmission circuit 15; Main control chip 16 links to each other with voltage detection module 12 with temperature detecting module 5 respectively; 6 heating modules 3 are installed in respectively on the corresponding electrokinetic cell 13; 6 temperature sensors in the temperature detecting module 5 are installed in respectively on the corresponding electrokinetic cell 13, and voltage detection module 12 links to each other with 6 electrokinetic cells 13 through the voltage acquisition line.
1 electrokinetic cell 13 of each heating module 3 heating, protective tube 8 plays overcurrent protection in heating circuit.Temperature detecting module 5 in the BMS system 14 is monitored the temperature information and the information of voltage of each electrokinetic cell 13 respectively with voltage detection module 12, and sends it to main control chip 16, and 16 pairs of temperature values that receive of main control chip and magnitude of voltage are judged.
When the voltage of each electrokinetic cell 13 all is higher than 2.8V (minimum discharge voltage); And when the temperature that 1 or 1 above electrokinetic cell 13 is arranged is lower than 5 ℃; Main control chip 16 sends the heating control command through CAN transmission circuit 15 to CPU 1; The switching tube drive circuit 7 that 1 pair of temperature of CPU is lower than in 5 ℃ the electrokinetic cell 13 pairing heating control module 4 transmits control signal, and switching tube drive circuit 7 applies forward voltage on the grid of corresponding switch pipe 6, the heating circuit conducting that power supply 2 and heating module 3, protective tube 8 and switching tube 6 are connected into; Heating module 3 is started working, the electrokinetic cell 13 that heating is corresponding.Simultaneously, corresponding loop detection circuit 10 detects whether normally of these heating circuits, and detects buffer circuit 11 through the loop and send signals and give CPU 1.When heating circuit does not have normally, CPU 1 control switch tube drive circuit 7 stops on the grid of corresponding switch pipe 6 and applies voltage, breaks off heating circuit, and sends warning messages through CAN transmission circuit 15 to main control chip 16.
When the temperature of each electrokinetic cell 13 all is higher than 5 ℃; When perhaps having the voltage of 1 or 1 above electrokinetic cell 13 to be lower than 2.8V (minimum discharge voltage); Main control chip 16 sends to CPU 1 through CAN transmission circuit 15 and stops the heating order; CPU 1 is sent stop signal and is given switching tube drive circuit 7, and switching tube drive circuit 7 stops to apply voltage on the grid of switching tube 6, and power supply 2 breaks off with the heating circuit that heating module 3, protective tube 8 and switching tube 6 are connected into; Heating module 3 quits work, and stops to heat electrokinetic cell 13.Simultaneously, whether loop detection circuit 10 detects each heating circuit and normally breaks off, and detects buffer circuit 11 transmission signals through the loop and give CPU 1.Do not break off when heating circuit is normal, CPU 1 is sent warning message through CAN transmission circuit 15 to main control chip 16.
Temperature when the utility model makes electrokinetic cell 13 work stops heating work when the voltage of electrokinetic cell 13 is lower than minimum discharge voltage in the temperature range that allows, guaranteed the serviceability of electrokinetic cell 13, has prolonged the useful life of electrokinetic cell 13.
Claims (10)
1. electric automobile power battery heat management device; It is characterized in that: comprise CPU (1), power supply (2), heating module (3), heating control module (4) and temperature detecting module (5); Said CPU (1) links to each other with temperature detecting module (5) with heating control module (4) respectively; Said heating module (3) links to each other with heating control module (4) with power supply (2) respectively, and said temperature detecting module (5) and heating module (3) are arranged on the electric automobile power battery (13).
2. a kind of electric automobile power battery heat management device according to claim 1; It is characterized in that: said heating control module (4) comprises switching tube (6) and switching tube drive circuit (7); Said power supply (2), heating module (3) and switching tube (6) are connected into a heating circuit; Said switching tube drive circuit (7) one ends link to each other with switching tube (6) control end, and switching tube drive circuit (7) other end links to each other with CPU (1).
3. a kind of electric automobile power battery heat management device according to claim 2 is characterized in that: said switching tube (6) is a N channel enhancement FET.
4. according to claim 2 or 3 described a kind of electric automobile power battery heat management devices; It is characterized in that: also comprise protective tube (8), said power supply (2), heating module (3), protective tube (8) and switching tube (6) are connected into a heating circuit.
5. according to claim 2 or 3 described a kind of electric automobile power battery heat management devices; It is characterized in that: said heating control module (4) comprises that also switching tube drives buffer circuit (9); The end that said switching tube drives buffer circuit (9) links to each other with switching tube drive circuit (7) input; The other end that switching tube drives buffer circuit (9) links to each other with CPU (1), and said switching tube drive circuit (7) output links to each other with switching tube (6) control end.
6. according to claim 2 or 3 described a kind of electric automobile power battery heat management devices; It is characterized in that: said heating control module (4) also comprises loop detection circuit (10); Said loop detection circuit (10) one ends link to each other with CPU (1), and the other end of loop detection circuit (10) links to each other with an end of heating module (3).
7. a kind of electric automobile power battery heat management device according to claim 6; It is characterized in that: said heating control module (4) also comprises loop detection buffer circuit (11); Said loop is detected buffer circuit (11) one ends and is linked to each other with loop detection circuit (10) output; The other end that buffer circuit (11) is detected in the loop links to each other with CPU (1), and said loop detection circuit (10) input links to each other with an end of heating module (3).
8. according to claim 1 or 2 or 3 described a kind of electric automobile power battery heat management devices; It is characterized in that: also comprise voltage detection module (12); Said voltage detection module (12) links to each other with CPU (1); Said power supply (2) is composed in series by several electrokinetic cells (13) of electric automobile, and said voltage detection module (12) links to each other with several electrokinetic cells (13) through the voltage acquisition line.
9. a kind of electric automobile power battery heat management device according to claim 8; It is characterized in that: said temperature detecting module (5) and voltage detection module (12) are the part of the BMS system (14) of management battery in the electric automobile; Said CPU (1) links to each other with the main control chip (16) of BMS system (14) through CAN transmission circuit (15), and said temperature detecting module (5) links to each other with main control chip (16) respectively with voltage detection module (12).
10. according to claim 1 or 2 or 3 described a kind of electric automobile power battery heat management devices, it is characterized in that: said heating module (3) is a ptc heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201027987U CN202513261U (en) | 2012-03-19 | 2012-03-19 | Heat management device for power battery of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201027987U CN202513261U (en) | 2012-03-19 | 2012-03-19 | Heat management device for power battery of electric automobile |
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| Publication Number | Publication Date |
|---|---|
| CN202513261U true CN202513261U (en) | 2012-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201027987U Expired - Fee Related CN202513261U (en) | 2012-03-19 | 2012-03-19 | Heat management device for power battery of electric automobile |
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| Country | Link |
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| CN (1) | CN202513261U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253384A (en) * | 2016-08-12 | 2016-12-21 | 辽宁比科新能源股份有限公司 | A kind of battery balanced device with heating function |
| CN108574127A (en) * | 2017-03-13 | 2018-09-25 | 黄志明 | A kind of constant temperature digital battery and its constant temperature working method |
| CN110649350A (en) * | 2019-09-30 | 2020-01-03 | 江西优特汽车技术有限公司 | Heating system for power battery |
-
2012
- 2012-03-19 CN CN2012201027987U patent/CN202513261U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253384A (en) * | 2016-08-12 | 2016-12-21 | 辽宁比科新能源股份有限公司 | A kind of battery balanced device with heating function |
| CN108574127A (en) * | 2017-03-13 | 2018-09-25 | 黄志明 | A kind of constant temperature digital battery and its constant temperature working method |
| CN110649350A (en) * | 2019-09-30 | 2020-01-03 | 江西优特汽车技术有限公司 | Heating system for power battery |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121031 Termination date: 20190319 |