CN203085712U - Heating and heat preservation system for electric vehicle battery - Google Patents
Heating and heat preservation system for electric vehicle battery Download PDFInfo
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- CN203085712U CN203085712U CN 201320126156 CN201320126156U CN203085712U CN 203085712 U CN203085712 U CN 203085712U CN 201320126156 CN201320126156 CN 201320126156 CN 201320126156 U CN201320126156 U CN 201320126156U CN 203085712 U CN203085712 U CN 203085712U
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Abstract
The utility model relates to a heating and heat preservation system for an electric vehicle battery. The heating and heat preservation system comprises a battery pack consisting of a plurality of battery monomers, a heating film fixedly connected with the inner wall of a battery case, a special main cable and a special charger, wherein a relay and a winter-summer change-over switch are arranged on the special main cable; three leading wires for a charger first positive pole, a charger first negative pole and a charger second negative pole are arranged at the output end of the special charger; a first positive pole N, a first negative pole L and a second negative pole E are arranged on a three-phase charging socket of the battery case; the positive pole of the heating film is connected with the first positive pole N, and the negative pole of the heating film is connected with the second negative pole E; a control end of the relay is respectively connected with a battery pack positive pole and a battery pack negative pole, and a power supply lock is arranged on a connecting wire of the battery pack positive pole and the control end of the relay. The heating and heat preservation system solves the problem of low battery charging saturation degree at low temperature, and solves the problem that the battery is incapable of being heated during driving under a low-temperature environment, so that the battery discharging saturation degree and the continuation miles of electric bicycles at low temperature are increased.
Description
Technical field
The utility model relates to the electric bicycle field, particularly a kind of heat tracing system that is used for battery of electric vehicle.
Background technology
As everyone knows, electric motor car battery charge saturation under low temperature environment can reduce greatly at present, and discharge capacity of the cell also can reduce greatly under low temperature environment.When Lead Acid Battery Used for Electric Vehicle was lower than 25 ℃ in working temperature, mileages of continuation can shorten 1% when 1 ℃ of the every decline of temperature, and battery capacity descends 25% thereupon when temperature drops to 0 ℃; Because the electric weight that charges into is few, put not thoroughly, user's mileages of continuation of electric motor car in use also can shorten greatly, to the user go on a journey bring very big constant.In order to solve this difficult problem, electric motor car " Bao Reqiang " technology of developing that the utility model is breakthrough, solved the low problem of battery of electric vehicle charge and discharge saturation in the warm low environment, thereby promote the mileages of continuation of electric motor car in low temperature environment greatly, strengthen the electric motor car competitiveness in market in the winter time.Although there be the technology of charger to battery heating film charging heating in some producer in the industry, but the circuit of battery charge and heating film heating is fully independently, do not realize " altogether just, negative altogether " or the simple structure of " bear altogether, just be not total to " of charger internal structure, thereby the charger volume that causes it to produce is big, the drawback that output is many, the structure of charging socket is also corresponding complicated a lot, and charger can not be general with the product in the industry, and cost is higher.
The utility model content
Technical problem to be solved in the utility model provides a kind of heat tracing system that is perfectly safe and is used for battery of electric vehicle reliably, this system heats cell body by adding thermal radiation, it is fixed on the battery case inwall, can be in low temperature environment provide thermal circulation insulated wall endlessly to battery during charge and discharge, battery temperature is promoted to the normal temperature state.
For solving the problems of the technologies described above, the utility model is realized as follows: a kind of heat tracing system that is used for battery of electric vehicle described in the utility model comprises the battery pack of being made up of some battery cells, be fixedly connected on the heating film on the battery case inwall, special-purpose main cables and special charger, special charger comprises rectification circuit, translation circuit, the PWM control circuit for pulse-width modulation, sampling resistor, optocoupler, electric current and Voltage Feedback control circuit, special charger still adopts the constant current that charger producer adopts in the industry, constant voltage, break away from gassing district's trickle charge stage syllogic charging work principle design, the PWM control circuit for pulse-width modulation is connected with translation circuit by switching tube, the input of electric current and Voltage Feedback control circuit is connected with charger first anodal N and the charger first negative pole L that the output of special charger is drawn by translation circuit respectively, its output is connected with optocoupler, and the other end of optocoupler is connected with the PWM control circuit for pulse-width modulation; The circuit of the charger first negative pole L that is drawn by translation circuit is provided with sampling resistor, and it is characterized in that: the output of described special charger also is provided with the charger second negative pole E that is drawn by translation circuit; The exit of the lead-out wire of the described charger second negative pole E is connected in the sampling resistor front end of special charger, circuit by the sampling resistor front end is drawn, also be provided with diverter switch on the lead-out wire of the charger second negative pole E, be used to cut off the output of the charger second negative pole E, thus the power supply of control heating film; On the lead-out wire of the charger first negative pole L, also be provided with diode in the sampling resistor rear end; Thereby constituted battery charge output by charger first anodal N and charger first negative pole L power supply, reach heating film power supply output by charger first anodal N and charger second negative pole E power supply, battery charge output and heating film power supply output have constituted the circuit structure of " altogether just, not negative altogether "; Described battery case is provided with the three-phase charging socket, and the three-phase charging socket is provided with the first anodal N, the first negative pole L and the second negative pole E; Described battery anode is connected with the first anodal N, and described battery pack negative pole is connected with the first negative pole L; Described heating film is anodal to be connected with the first anodal N, and the heating film negative pole is connected with the second negative pole E; Described special-purpose main cables is provided with relay and summer and winter change-over switch; The control end of described relay is connected with the battery pack negative pole with battery anode respectively, and the connection line of the control end of battery anode and relay is provided with the power supply lock; The first negative pole L that is provided with on one end of described summer and winter change-over switch and the three-phase charging socket is connected, the other end is connected on the relay controlled terminal, another controlled terminal of relay is connected with the second negative pole E, the connection and the disconnection that can come two controlled terminals of control relay by the control end energising or the outage of control relay.
One of them input of described electric current and Voltage Feedback control circuit is connected between the diode on sampling resistor and the charger first negative pole L lead line.
Described battery anode is provided with protective tube with the circuit that the first anodal N is connected.
The anodal circuit that is connected with the first anodal N of described heating film is provided with temperature detect switch (TDS).
The output of described special charger is provided with the charger first anodal N, the charger first negative pole L and the charger second negative pole E and docks with the first anodal N, the first negative pole L and the second negative pole E that are provided with on the three-phase charging socket of battery case respectively.
Described charger is provided with the function button switch, when ambient temperature is lower than 10 ℃, presses the function button switch, starts heating film charging heating function; When ambient temperature is higher than 10 ℃, too high for preventing the battery charge temperature, the function button switch can be upspring, stop heating film charging heating function.
Good effect of the present utility model: a kind of heat tracing system that is used for battery of electric vehicle described in the utility model has not only solved the lower low problem of environment charging battery of electric vehicle saturation of temperature, and solved in the lower environment of temperature battery of electric vehicle effectively in the problem of riding and to heat, greatly improved the discharge saturation of battery of electric vehicle in low temperature environment, the mileages of continuation of electric motor car in low temperature environment can be improved more than 35%, possess certain advanced level; The current technology of having only in this field in the warm low environment the charging battery of electric vehicle heating, not in the lower environment of temperature to the technology of battery discharge heating, can not solve the electric motor car halfway difficult problem of under low temperature environment, discharging; Battery charge output and heating film power supply output have constituted the circuit structure of " just being total to; negative altogether ", voltage, the electric current of heating film power supply output can not exert an influence to each charge parameter of battery charge output, guarantee battery be full of and do not fill bad, secure to the useful life of battery; Special charger is simple in structure, and volume is little, and the three-phase charging socket that adopts on the battery case is identical with the socket that the common electrical motor-car uses, and is convenient to buying, and cost is lower.The lead-out wire of the charger second negative pole E is provided with diverter switch, make the circuit structure of heat tracing system, even the time not with the supporting special charger of car, the universal charger that also can temporarily use same specification, same polarity in the industry comes emergent charging, brings great convenience to the bicyclist.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the wiring schematic diagram of three-phase charging socket
Fig. 2 is the wiring schematic diagram of monocell box heat tracing system
Fig. 3 is the wiring schematic diagram of double cell box heat tracing system
Fig. 4 is a charger operation principle schematic diagram
Among the figure, 1 three-phase charging socket, 2 protective tubes
3 heating films, 31 heating film a, 32 heating film b
4 temperature detect switch (TDS)s, 41 temperature detect switch (TDS) a, 42 temperature detect switch (TDS) b
5 power supplys are locked 6 relays, 7 summer and winter change-over switch
11 sampling resistors, 12 diodes
Embodiment
As shown in Figure 1 and Figure 2, as special case study on implementation, a kind of heat tracing system that is used for battery of electric vehicle described in the utility model comprises the battery pack be made up of the some battery cells that are installed on battery case inside, is fixedly connected on the heating film (3) on the battery case inwall, special-purpose main cables and special charger; Special charger comprises rectification circuit, translation circuit, the PWM control circuit for pulse-width modulation, sampling resistor (11), optocoupler, electric current and Voltage Feedback control circuit, special charger still adopts the constant current that charger producer adopts in the industry, constant voltage, break away from gassing district's trickle charge stage syllogic charging work principle design, the PWM control circuit for pulse-width modulation is connected with translation circuit by switching tube (9), an input of electric current and Voltage Feedback control circuit is connected with the charger first anodal N that the output of special charger is drawn by translation circuit, another input of electric current and Voltage Feedback control circuit is connected between the diode (12) on sampling resistor (11) and the charger first negative pole L lead line, and the output of electric current and Voltage Feedback control circuit is connected with optocoupler; The other end of optocoupler is connected with the PWM control circuit for pulse-width modulation; The output of described special charger also is provided with the charger second negative pole E that is drawn by translation circuit; The exit of the lead-out wire of the described charger second negative pole E is connected in sampling resistor (11) front end of special charger, circuit by sampling resistor (11) front end is drawn, also be provided with diverter switch (10) on the lead-out wire of the charger second negative pole E, be used to cut off the output of the charger second negative pole E, thus the power supply of control heating film (3); On the lead-out wire of the charger first negative pole L, also be provided with diode (12) in sampling resistor (11) rear end; Thereby constituted battery charge output by charger first anodal N and charger first negative pole L power supply, reach heating film power supply output by charger first anodal N and charger second negative pole E power supply, battery charge output and heating film power supply output have constituted the circuit structure of " altogether just, not negative altogether "; Described battery case is provided with three-phase charging socket (1), and three-phase charging socket (1) is provided with the first anodal N, the first negative pole L and the second negative pole E; Described battery anode is connected with the first anodal N, and the circuit that battery anode is connected with the first anodal N is provided with protective tube (2), and described battery pack negative pole is connected with the first negative pole L; Described heating film (3) is anodal to be connected with the first anodal N, the anodal circuit that is connected with the first anodal N of heating film (3) is provided with temperature detect switch (TDS) (4), the design temperature of temperature detect switch (TDS) (4) is 40 ℃, when the battery case internal temperature surpasses 40 ℃, temperature detect switch (TDS) (4) automatic disconnection, when the battery case internal temperature is lower than 40 ℃, temperature detect switch (TDS) (4) conducting automatically; Heating film (3) negative pole is connected with the second negative pole E; The control end of described relay (6) is connected with the battery pack negative pole with battery anode respectively, and the connection line of the control end of battery anode and relay (6) is provided with power supply lock (5); Described special-purpose main cables is provided with relay (6) and summer and winter change-over switch (7); One end of described summer and winter change-over switch (7) is gone up the first negative pole L that is provided with three-phase charging socket (1) and is connected, the other end is connected on relay (6) controlled terminal, another controlled terminal of relay (6) is connected with the second negative pole E, the connection and the disconnection that can come (6) two controlled terminals of control relay by the control end energising or the outage of control relay (6); This structure collectivity be the positive pole of heating film (3) and battery pack use a positive electrode structure just very jointly, and the negative pole of heating film (3) and two negative poles of battery pack negative pole for separating, connect by control circuit each other, integrated circuit has constituted just not negative altogether altogether structure.
When giving batteries charging, the charger first anodal N, the charger first negative pole L are set the output of special charger and the charger second negative E utmost point docks with the first anodal N, the first negative pole L and the second negative pole E that the three-phase charging socket (1) of battery case upward is provided with respectively; After inserting external power supply to charger, because battery anode is connected with three-phase charging socket (1) the last first anodal N, the battery pack negative pole is connected with the last first negative pole L of three-phase charging socket (1), and charger first positive pole is connected with the first anodal N, charger first negative pole is connected with the first negative pole L, constituted the charging closed loop, so charger begins to batteries charging; Be connected with three-phase charging socket (1) the last first anodal N because heating film (3) is anodal, heating film (3) negative pole is connected with the second negative pole E, and charger first positive pole is connected with the first anodal N, charger second negative pole is connected with the second negative pole E, constituted heating film (3) power supply closed loop, so heating film (3) begins to the battery pack heat tracing, charger is that heating film provides constant current constant voltage this moment; When the battery case internal temperature surpasses 40 ℃, temperature detect switch (TDS) (4) automatic disconnection, heating film (3) quits work, when the battery case internal temperature is lower than 40 ℃, temperature detect switch (TDS) (4) conducting automatically, heating film (3) works on, and guarantees that the battery case internal temperature is stable.Charger is provided with the function button switch, when ambient temperature is lower than 10 ℃, presses the function button switch, starts heating film (3) charging heating function, and heating film (3) can operate as normal; When ambient temperature is higher than 10 ℃, too high for preventing the battery charge temperature, the function button switch can be upspring, stop heating film (3) charging heating function, heating film (3) is not even if can carry out heat tracing work yet when charging.
Under riding condition, during battery discharge, be that the course of work that heating film (3) heats is by battery: opening power lock (5), the control end energising of relay (6), thus two controlled terminals of relay (6) connect; Open summer and winter change-over switch (7), its set condition is to be winter mode under summer and winter change-over switch (7) open mode, and circuit is in conducting state, i.e. the first negative pole L and the second negative pole E short circuit; Because battery anode is connected with the first anodal N, the battery pack negative pole is connected with the first negative pole L, heating film (3) is anodal to be connected with the first anodal N, heating film (3) negative pole is connected with the second negative pole E, under the state that summer and winter change-over switch (7) is opened, the first negative pole L and the second negative pole E short circuit are the closed-loop path of heating film (3) power supply thereby constitute by battery pack, and heating film (3) is started working.No matter thereby guaranteed that under any environment in the external world native system can guarantee that the battery case internal temperature is stabilized in about 40 ℃ in the process of riding.
Figure 3 shows that the wiring schematic diagram of double cell box heat tracing system, its basic structure is identical with structure shown in Figure 2, and difference is just in the wiring part of two battery pack and the wiring part of two parts heating film (3).For double cell box heat tracing system, comprise heating film a (31) and heating film b (32); Heating film a (31) and heating film b (32) are connected in parallel by the outer connector (8) of battery case, the anodal butt joint of heating film a (31) and heating film b (32), and heating film a (31) and heating film b (32) negative pole also dock; Heating film a (31) and heating film b (32) are respectively equipped with temperature detect switch (TDS) a (41) and temperature detect switch (TDS) b (42) on its anodal output circuit, thereby can guarantee that two battery case temperature inside are stable; Two battery pack series connection, series connection back battery anode is connected with the first anodal N of three-phase charging socket (1), and series connection back battery pack negative pole is connected with the first negative pole L of three-phase charging socket (1); The heating film a (31) of two groups of parallel connections connects with the first anodal N of three-phase charging socket (1) with the positive pole of heating film b (32), and the heating film a (31) of two groups of parallel connections goes up the second negative pole E that is provided with the negative pole of heating film b (32) and three-phase charging socket (1) and is connected; The wiring of the structure of remainder and monocell box heat tracing system is identical, and both are also identical for operation principle.
By carrying out the data contrast in the charging capacity of the new battery of 48V10AH under 25 ℃ the normal temperature state and under-15 ℃ the low temperature state, we find to charge under 25 ℃ normal temperature, and the charging capacity of the new battery of 48V10AH can reach about 12.5AH; And under-15 ℃ low temperature state, charge, the charging capacity of the new battery of 48V10AH only is about 7AH, compares, same group of new battery can differ more than 40% in charging capacity under 25 ℃ the normal temperature state and under-15 ℃ the low temperature state respectively.
The new battery of 48V10AH after charging under 25 ℃ the normal temperature state, is positioned under-15 ℃ the low temperature state and discharges, and it can emit the 9.9AH capacity; And with the new battery of 48V10AH after charging under-15 ℃ the low temperature state, still be positioned under-15 ℃ the low temperature state and discharge, it can emit the electricity of 6.9AH capacity, the two contrast differs about 30%.
With capacity is two battery pack of 12AH, under-5 ℃ temperature, carry out the mileages of continuation contrast, the difference of two Battery packs is that a Battery pack has increased heat tracing described in the utility model system, another is a common batteries, the result is that the mileages of continuation that the electric bicycle of heat tracing system is installed is 40Km, and the mileages of continuation that the electric bicycle of heat tracing system is not installed is 29.5Km.
With capacity is two battery pack of 20AH, under-10 ℃ temperature, carry out the mileages of continuation contrast, the difference of two Battery packs is that a Battery pack has increased heat tracing described in the utility model system, another is a common batteries, the result is that the mileages of continuation that the electric bicycle of heat tracing system is installed is 58Km, and the mileages of continuation that the electric bicycle of heat tracing system is not installed is 43Km.
A kind of its charger that adopts of heat tracing system that is used for battery of electric vehicle described in the utility model is a special charger, the charger second negative pole E of the heating film power supply output that links to each other with heating film in special charger inside, be connected on the sampling resistor front end of special charger, and on the charger first negative pole L, increase diode-isolated, battery charge output and heating film power supply output have constituted the circuit structure of " just being total to; negative altogether ", if directly using negative just altogether altogether circuit structure when charging powers simultaneously to battery and heating film, can directly influence the electric current and the Voltage Feedback control circuit of charger by the electric current of heating film, can each charge parameter of battery charge output be exerted an influence, can not satisfy the demand of battery charge, might cause battery and be not fully filled, thermal runaway, fault such as cell expansion during charging.
Because the heating film load is constant, voltage, the current constant of heating film power supply output are constant; On the charger first negative pole L, increase diode-isolated, solved to heating film power supply heating the time, the interference of electric current and Voltage Feedback control circuit; Simultaneously, because the charger second negative pole E of the heating film that links to each other with heating film power supply output is connected on the sampling resistor front end of special charger, and be prepended to electric current and Voltage Feedback control circuit, it can not exert an influence to each charge parameter of battery charge output, when having satisfied charging simultaneously to the demand for heat of battery.The lead-out wire of the charger second negative pole E is provided with diverter switch, when ambient temperature is higher than 10 ℃, can close the heating output function, prevents that battery charge is overheated.
Relevant a kind of some the special case study on implementation that are used for the heat tracing system of battery of electric vehicle of the utility model that just explain through diagrams recited above; owing to concerning the technical staff in constructed field, be easy to carry out on this basis some modifications; therefore shown in this specification is not really wanted a kind of heat tracing system that is used for battery of electric vehicle described in the utility model is confined to or in the described concrete mechanism and the scope of application; so every corresponding modify that may be utilized and equivalent, all belong to the protection range of the utility model patent.
Claims (3)
1. heat tracing system that is used for battery of electric vehicle, comprise the battery pack of forming by some battery cells, be fixedly connected on the heating film on the battery case inwall, special-purpose main cables and special charger, special charger comprises rectification circuit, translation circuit, the PWM control circuit for pulse-width modulation, sampling resistor, optocoupler, electric current and Voltage Feedback control circuit, the PWM control circuit for pulse-width modulation is connected with translation circuit by switching tube, the input of electric current and Voltage Feedback control circuit is connected with charger first anodal N and the charger first negative pole L that the output of special charger is drawn by translation circuit respectively, its output is connected with optocoupler, and the other end of optocoupler is connected with the PWM control circuit for pulse-width modulation; The circuit of the charger first negative pole L that is drawn by translation circuit is provided with sampling resistor, and it is characterized in that: the output of described special charger also is provided with the charger second negative pole E that is drawn by translation circuit; The exit of the lead-out wire of the described charger second negative pole E is connected in the sampling resistor front end of special charger, is drawn by the circuit of sampling resistor front end, also is provided with diverter switch on the lead-out wire of the charger second negative pole E; On the lead-out wire of the charger first negative pole L, also be provided with diode in the sampling resistor rear end, constituted battery charge output, reached heating film power supply output by charger first anodal N and charger second negative pole E power supply by charger first anodal N and charger first negative pole L power supply; Described battery case is provided with the three-phase charging socket, and the three-phase charging socket is provided with the first anodal N, the first negative pole L and the second negative pole E; Described battery anode is connected with the first anodal N, and described battery pack negative pole is connected with the first negative pole L; Described heating film is anodal to be connected with the first anodal N, and the heating film negative pole is connected with the second negative pole E; Described special-purpose main cables is provided with relay and summer and winter change-over switch; The control end of described relay is connected with the battery pack negative pole with battery anode respectively, and the connection line of the control end of battery anode and relay is provided with the power supply lock; The first negative pole L that is provided with on one end of described summer and winter change-over switch and the three-phase charging socket is connected, and the other end is connected on the relay controlled terminal, and another controlled terminal of relay is connected with the second negative pole E.
2. a kind of heat tracing system machine that is used for battery of electric vehicle according to claim 1 is characterized in that: one of them input of described electric current and Voltage Feedback control circuit is connected between the diode on sampling resistor and the charger first negative pole L lead line.
3. a kind of heat tracing system that is used for battery of electric vehicle according to claim 1 is characterized in that: the output of described special charger is provided with the charger first anodal N, the charger first negative pole L and the charger second negative E utmost point and docks with the first anodal N, the first negative pole L and the second negative pole E that are provided with on the three-phase charging socket of battery case respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320126156 CN203085712U (en) | 2013-03-20 | 2013-03-20 | Heating and heat preservation system for electric vehicle battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320126156 CN203085712U (en) | 2013-03-20 | 2013-03-20 | Heating and heat preservation system for electric vehicle battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203085712U true CN203085712U (en) | 2013-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320126156 Withdrawn - After Issue CN203085712U (en) | 2013-03-20 | 2013-03-20 | Heating and heat preservation system for electric vehicle battery |
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| CN (1) | CN203085712U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103165960A (en) * | 2013-03-20 | 2013-06-19 | 淮安苏能电动车有限公司 | Heating thermal insulation system for electrombile battery |
| CN110233312A (en) * | 2018-05-02 | 2019-09-13 | 杭州光力美电子科技有限公司 | A kind of electric bicycle temperature keeping accumulator box |
-
2013
- 2013-03-20 CN CN 201320126156 patent/CN203085712U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103165960A (en) * | 2013-03-20 | 2013-06-19 | 淮安苏能电动车有限公司 | Heating thermal insulation system for electrombile battery |
| CN103165960B (en) * | 2013-03-20 | 2015-03-18 | 淮安苏能电动车有限公司 | Heating thermal insulation system for electrombile battery |
| CN110233312A (en) * | 2018-05-02 | 2019-09-13 | 杭州光力美电子科技有限公司 | A kind of electric bicycle temperature keeping accumulator box |
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Granted publication date: 20130724 Effective date of abandoning: 20150318 |
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