CN207459113U - Battery heater circuit - Google Patents
Battery heater circuit Download PDFInfo
- Publication number
- CN207459113U CN207459113U CN201721689457.3U CN201721689457U CN207459113U CN 207459113 U CN207459113 U CN 207459113U CN 201721689457 U CN201721689457 U CN 201721689457U CN 207459113 U CN207459113 U CN 207459113U
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- battery
- circuit
- switch pipe
- temperature
- managing device
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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
Abstract
The utility model discloses a kind of battery heater circuit, including：Temperature sensor, cell managing device and charging circuit.Temperature sensor is mounted in battery pack, and the real time temperature of temperature sensor detection battery pack simultaneously sends temperature signal.Cell managing device is connected with temperature sensor, and cell managing device receives the temperature signal that temperature sensor is sent.Charging circuit is connected with cell managing device.Wherein, cell managing device compares temperature signal with critical-temperature, and temperature signal is less than or equal to critical-temperature, and cell managing device control charging circuit works in high-frequency heating pattern, and charging circuit heats for battery pack；Temperature signal is higher than critical-temperature, and cell managing device control charging circuit works in charge mode, charges for battery pack.Internal resistance is big at low temperature using battery for the battery heater circuit, the characteristic more than heat, by realizing the heating to battery to the high frequency charge and discharge of battery.High-frequency ac charging heating will not have an impact battery security.
Description
Technical field
The utility model is related to battery thermal management technical fields, are heated more specifically to the battery under low temperature environment
Technical field.
Background technology
Lithium ion battery with its specific power it is high, can force density be big, long lifespan, self-discharge rate are low and storage time length etc. is excellent
Point has progressively substituted other batteries to become main Vehicular dynamic battery.Although lithium ion battery has many advantages, low
The charge-discharge performance of the lower lithium ion battery of temperature is there are larger problem, this performance to electric vehicle, especially low temperature environment
The performance of lower electric vehicle produces bigger effect.On the one hand, low temperature reduces the continual mileage of electric vehicle, because low temperature
Lower battery lithium ions diffusion rate declines, and battery discharge reaches blanking voltage soon, and the utilisable energy of battery reduces, electronic vapour
The course continuation mileage attenuation of vehicle.On the other hand, low temperature has seriously affected charging security and the charging time of battery, and low temperature charges
When, cell voltage quickly reaches the maximum blanking voltage of battery, it is likely that battery transient voltage is caused to overcharge, causes inside battery
Lithium is analysed, triggers battery short circuit, increases battery security risk.Current charge of rationing the power supply generally is carried out to battery under low temperature at present, significantly
Extend the charging time so that user experience is remarkably decreased.
China is vast in territory, and there are a large amount of mean temperatures, lower ground area, the user of low temp area use meeting during electric car
Significantly influenced be subject to charging performance of battery under low temperature.In order to improve the charging performance of battery at low temperature, generally can all consider
Battery is heated in low temperature environment, battery temperature is promoted to after suitable temperature and is charged again to battery.At present
There are outside heating method and inside heating method in the mode that battery low-temperature heat field is mainly taken.Outside heating mainly has fluid to change
Heat, Resistant heating, electric heating film heating etc., this kind of heating means are while heating in the presence of heating is slow, efficiency is low, battery
The shortcomings of internal and external temperature gradient is big.Inside heating method mainly has battery discharge heating and battery AC charging heating, battery discharge
Heating is unable to maintain that the SOC of battery.And battery AC charging heating is very suitable for battery due to heating the advantages that rapid, efficient
Heating.
Utility model content
The utility model discloses a kind of battery heater circuit, and battery is carried out by high frequency charge and discharge at low ambient temperatures
Heating.
An embodiment according to the present utility model proposes a kind of battery heater circuit, including：Temperature sensor, cell tube
Manage device and charging circuit.Temperature sensor is mounted in battery pack, and the real time temperature of temperature sensor detection battery pack is concurrent
Send temperature signal.Cell managing device is connected with temperature sensor, and cell managing device receives the temperature that temperature sensor is sent
Signal.Charging circuit is connected with cell managing device.Wherein, cell managing device compares temperature signal with critical-temperature,
Temperature signal is less than or equal to critical-temperature, and cell managing device control charging circuit works in high-frequency heating pattern, and charge electricity
It is heated for battery pack on road；Temperature signal is higher than critical-temperature, and cell managing device control charging circuit works in charge mode, is
Battery pack charges.
In one embodiment, charging circuit include charger and heater circuit, heater circuit include battery charger,
Battery charging freewheeling circuit, battery discharging circuit and battery discharge freewheeling circuit.
In one embodiment, cell managing device control charging circuit works in high-frequency heating pattern, and battery charges electric
Road and battery discharging circuit are with high frequency alternate conduction and disconnection, and battery pack high frequency charge and discharge are to be heated, cell managing device
Control charging circuit works in charge mode, and battery charger turns on always and battery discharging circuit disconnects always, battery pack
Carry out trickle charge.
In one embodiment, heater circuit includes：Capacitance, first switch pipe and second switch pipe, the first diode and
Second diode, the first inductance and the second inductance, between the output terminal and battery pack of heater circuit insertion charger.
In one embodiment, capacitance, first switch pipe, the first inductance and the second inductance and battery pack series connection, are formed
Battery charger.Second diode, the first inductance and the second inductance and battery pack series connection, form battery charging afterflow electricity
Road.Second switch pipe, the first inductance and the second inductance and battery pack series connection, form battery discharging circuit.Capacitance, the one or two
Pole pipe, the first inductance and the second inductance and battery pack series connection, form battery discharge freewheeling circuit.
In one embodiment, cell managing device includes heating controller and driving circuit.Driving circuit is connected to
One switching tube and second switch pipe, the conducting and disconnection of driving circuit control first switch pipe and second switch pipe.Computer heating control
Device sends control signal according to the operating mode that cell managing device determines to driving circuit, in high-frequency heating pattern, heating control
The charging and discharging currents of device sampling battery bag processed are sent out by hysteresis comparator and driving circuit to first switch pipe and second switch pipe
Complementary drive signal is sent, first switch pipe and second switch pipe are with high frequency alternate conduction and disconnection, and battery pack is with high frequency charge and discharge
Electricity, in charge mode, by driving circuit control, first switch pipe turns on control unit always, second switch pipe disconnects always,
Battery pack trickle charge.
In one embodiment, first switch pipe and second switch pipe are MOSFET or IGBT.
The utility model mainly has the advantages that：
A kind of ac high frequency heater circuit is embedded in circuit for charging machine, charger can realize the low-temperature heat of battery
Function, while do not influence charger charges normal function.Low temperature exchange heating mode is first turned under low temperature, battery is carried out
Ac high frequency heats, and effectively avoids the formation of dendrite when battery low temperature charges, and improves battery charging security, and not
Battery life can be caused to decay.
The capacitance and inductance of selection can carry out energy exchange, the not additional consumed energy of circuit, merely with battery with battery
Internal resistance carries out battery exchanging the heat generated during charge and discharge the heating of from-inner-to-outer, and energy loss is small, efficient, warm raising speed
Degree is fast, and entire battery temperature uniformity is high in battery temperature-rise period.
By the control of switch tube and the type selecting of inductance, the size and frequency of alternating current can be controlled, disclosure satisfy that
The design requirement of wider range.
By controlling the consistent of battery charging and discharging energy in each ac cycle, ensure that battery does not consume in heating process
Self-energy, by the use of power grid as battery heat energy source.
Internal resistance is big at low temperature using battery for the battery heater circuit of the utility model simultaneously, and the characteristic more than heat passes through
Heating to battery is realized to the high frequency charge and discharge of battery.High-frequency ac charging heating will not generate shadow to battery security
It rings.The utility model can be obviously improved the charging performance and charge efficiency of battery under low temperature environment, and safe and reliable.
Description of the drawings
The above and other feature of the utility model, property and advantage will be by with reference to the accompanying drawings and examples
It describing and becomes apparent, reference numeral identical in the accompanying drawings always shows identical feature, wherein：
Fig. 1 discloses the battery charging strategy that the battery heater circuit of an embodiment according to the present utility model uses.
Fig. 2 discloses the structure diagram of the battery heater circuit of an embodiment according to the present utility model.
Fig. 3 discloses the circuit diagram of the battery heater circuit of an embodiment according to the present utility model.
The work that Fig. 4 discloses cell managing device in the battery heater circuit of an embodiment according to the present utility model is former
Manage schematic diagram.
The battery heater circuit that Fig. 5 discloses an embodiment according to the present utility model is worked under high-frequency heating pattern,
Battery pack charges and the state of inductive energy storage.
The battery heater circuit that Fig. 6 discloses an embodiment according to the present utility model is worked under high-frequency heating pattern,
Battery pack charge and inductance release can state.
The battery heater circuit that Fig. 7 discloses an embodiment according to the present utility model is worked under high-frequency heating pattern,
Battery pack is discharged and the state of inductive energy storage.
The battery heater circuit that Fig. 8 discloses an embodiment according to the present utility model is worked under high-frequency heating pattern,
Battery pack discharge and inductance release can state.
The battery heater circuit that Fig. 9 discloses an embodiment according to the present utility model is worked under high-frequency heating pattern,
Flow through the cyclically-varying schematic diagram of the electric current of battery pack.
Specific embodiment
Fig. 1 discloses the battery charging strategy that the battery heater circuit of an embodiment according to the present utility model uses.For
Extend the service life of battery, shorten the charging time of battery, when under for cryogenic conditions, directly battery should not be filled
Electricity, but first battery is heated.Refering to what is shown in Fig. 1, critical-temperature can be set in the charging strategy of the utility model, work as electricity
When pond temperature is less than or equal to the critical-temperature set, charging circuit is operated in high-frequency heating pattern, passes through the high frequency to battery
Charge and discharge heat battery, gradually rise battery temperature.When battery temperature is higher than the critical-temperature set, charging circuit
Normal charge mode is converted to, battery is carried out to continue charging.
Fig. 2 discloses the structure diagram of the battery heater circuit of an embodiment according to the present utility model.As shown in Fig. 2,
The battery heater circuit includes：Temperature sensor 102, cell managing device 104 and charging circuit 106.Temperature sensor 102 is pacified
In battery pack 202, temperature sensor 102 detects the real time temperature of battery pack 202 and sends temperature signal.Battery management fills
It puts 104 to be connected with temperature sensor 102, cell managing device 104 receives the temperature signal that temperature sensor 102 is sent.It charges
The input of circuit 106 is connected to AC power, and the output of charging circuit 106 is connected to battery pack 202.Charging circuit 106 also with
Cell managing device 104 connects.Battery heater circuit shown in Fig. 2 uses battery charging strategy shown in FIG. 1.Battery management fills
It puts 104 temperature signal compares with critical-temperature, temperature signal is less than or equal to critical-temperature, and cell managing device 104 is controlled
Charging circuit 106 processed works in high-frequency heating pattern, and charging circuit 106 is so that battery pack carries out high frequency charge and discharge with for battery pack
202 heating.Temperature signal is higher than critical-temperature, and cell managing device 104 controls charging circuit 106 to work in charge mode, is
Battery pack 202 carries out continuing charging.
In one embodiment, charging circuit include charger and heater circuit, heater circuit include battery charger,
Battery charging freewheeling circuit, battery discharging circuit and battery discharge freewheeling circuit.Cell managing device control charging circuit work
When high-frequency heating pattern, with high frequency alternate conduction and disconnection, battery pack high frequency fills for battery charger and battery discharging circuit
It discharges to be heated.When cell managing device control charging circuit works in charge mode, battery charger turns on always
And battery discharging circuit disconnects always, battery pack carries out trickle charge.Fig. 3 discloses an embodiment according to the present utility model
The circuit diagram of battery heater circuit.In the embodiment shown in fig. 3, battery charger, battery charging freewheeling circuit, battery are put
The specific composition that the heater circuit that circuit and battery discharge freewheeling circuit are formed includes is as follows：Heater circuit includes：Capacitance
C2, first switch pipe K1 and second switch pipe K2, the first diode D1 and the second diode D2, the first inductance L1 and the second inductance
L2, between the output terminal and battery pack of heater circuit insertion charger.In the embodiment shown in fig. 3, the input terminal of charger
It is connected to AC power, the input terminal of charger has AC/DC converters (mark is in figure).The output terminal of charger
Export DC power supply, the output terminal of charger has DC/DC converters (mark is in figure).In AC/DC converters and
Between DC/DC converters, isolation capacitance C1 is provided with.In the embodiment shown in fig. 3, battery pack is marked by E, in battery pack E
EMC wave filters are provided between the first inductance L1 and the second inductance L2 of heater circuit (mark is in figure).
Battery charger, battery charging freewheeling circuit, battery discharging circuit and battery discharge freewheeling circuit respectively constitute
It is as follows：
Capacitance C2, first switch pipe K1, the first inductance L1 and the second inductance L2 and battery pack E series connection, form battery and fill
Circuit.
Second diode D2, the first inductance L1 and the second inductance L2 and battery pack E series connection, form battery charging afterflow
Circuit.
Second switch pipe K2, the first inductance L1 and the second inductance L2 and battery pack E series connection, form battery discharging circuit.
Capacitance C2, the first diode D1, the first inductance L1 and the second inductance L2 and battery pack E series connection, form battery and put
Electric freewheeling circuit.
The work that Fig. 4 discloses cell managing device in the battery heater circuit of an embodiment according to the present utility model is former
Manage schematic diagram.Refering to what is shown in Fig. 4, cell managing device includes heating controller 141 and driving circuit 142.Driving circuit 142 connects
First switch pipe K1 and second switch pipe K2 are connected to, driving circuit 142 controls leading for first switch pipe K1 and second switch pipe K2
On and off is opened.In one embodiment, first switch pipe K1 and second switch pipe K2 is MOSFET or IGBT.Heating controller
141 send control signal according to the operating mode that cell managing device determines to driving circuit 142：Under high-frequency heating pattern,
The charging and discharging currents of 141 sampling battery bag of heating controller, by hysteresis comparator and driving circuit 142 to first switch pipe K1
Complementary drive signal, first switch pipe and second switch pipe are sent with high frequency alternate conduction and disconnection with second switch pipe K2,
Battery pack is with high frequency charge and discharge.Under charge mode, control unit 141 controls first switch pipe K1 to begin by driving circuit 142
Conducting, second switch pipe K2 are disconnected always eventually, battery pack trickle charge.
The battery heater circuit that Fig. 5~Fig. 8 discloses an embodiment according to the present utility model works in high-frequency electrically heated mold
The circuit diagram of each state under formula.Under high-frequency heating pattern, charging circuit is operated in constant pressure output mode to maintain
The voltage stabilization of capacitance C2, and the voltage of capacitance C2 voltage versus cell bags is slightly higher.
The battery heater circuit that Fig. 5 discloses an embodiment according to the present utility model is worked under high-frequency heating pattern,
Battery pack charges and the state of inductive energy storage.State shown in Fig. 5 is known as battery charging phase, the stage 1 is here labeled as, in electricity
Pond charging stage (stage 1), battery charger work.First switch pipe K1 is turned on, second switch pipe K2 shut-offs, and capacitance C2 is
Battery pack charges, and charging current flows through first switch pipe K1, the first inductance L1, battery pack anode, battery pack by capacitance C2 anodes
Cathode, the second inductance L2, finally flow back to capacitance C2 cathode.Since the energy storage of inductance acts on, charging current is gradually increased.When
When charging current increases to the max-thresholds of setting, heating controller driving first switch pipe K1 shut-offs, second switch pipe K2 is led
It is logical, into the battery charging freewheeling period (stage 2) shown in Fig. 6.
The battery heater circuit that Fig. 6 discloses an embodiment according to the present utility model is worked under high-frequency heating pattern,
Battery pack charge and inductance release can state.State shown in Fig. 6 is known as battery charging freewheeling period, is here labeled as the stage 2,
In battery charging freewheeling period (stage 2), the work of battery charging freewheeling circuit.First switch pipe K1 is turned off, second switch pipe K2
Conducting, since inductive current cannot be mutated, inductance continues as battery charging.Charging current is flowing through battery pack just by the first inductance L1
Pole, battery pack cathode, the second inductance L2, the second diode D2, finally flow back to the first inductance L1.Inductance releases energy, and charge electricity
Stream is gradually reduced.When electric current is reduced to 0, battery pack enters discharge regime.
The battery heater circuit that Fig. 7 discloses an embodiment according to the present utility model is worked under high-frequency heating pattern,
Battery pack is discharged and the state of inductive energy storage.State shown in Fig. 7 is known as the battery discharge stage, the stage 3 is here labeled as, in electricity
Tank discharge stage (stage 3), battery discharging circuit work.First switch pipe K1 is turned off, and second switch pipe K2 conductings, battery pack is certainly
Electric discharge, discharge current flow through the first inductance L1, second switch pipe K2, the second inductance L2 by battery pack anode, finally flow back to battery
Bag cathode.Since the energy storage of inductance acts on, discharge current is gradually increased.When discharge current increases to the max-thresholds of setting
When, heating controller driving first switch pipe K1 conductings, second switch pipe K2 shut-offs, into battery discharge afterflow shown in Fig. 8
Stage (stage 4).
The battery heater circuit that Fig. 8 discloses an embodiment according to the present utility model is worked under high-frequency heating pattern,
Battery pack discharge and inductance release can state.State shown in Fig. 8 is known as battery discharge freewheeling period, is here labeled as the stage 4,
In battery discharge freewheeling period (stage 4), the work of battery discharge freewheeling circuit.First switch pipe K1 is turned on, second switch pipe K2
Shut-off, since inductive current cannot be mutated, battery pack continues to discharge to capacitance C2, and discharge current flows through first by battery pack anode
Inductance L1, the first diode D1, capacitance C2 anodes, capacitance C2 cathode, the second inductance L2, finally flow back to battery pack cathode.Inductance
It releases energy, discharge current is gradually reduced.When electric current is reduced to 0, battery pack reenters the battery charging phase shown in Fig. 5
(stage 1) starts the cyclic process of a new round.
The battery heater circuit that Fig. 9 discloses an embodiment according to the present utility model is worked under high-frequency heating pattern,
Flow through the cyclically-varying schematic diagram of the electric current of battery pack.Stage 1, stage 2, stage 3 and stage 4 distinguish corresponding diagram 5, Fig. 6, figure
7 and working condition shown in Fig. 8.Heat control unit utilizes hysteresis comparator, switches first at the peak value of current charging and discharging
The drive signal of switching tube K1 and second switch pipe K2.In fig.9, abscissa be time t, ordinate be electric current i, stage 1, rank
Section 2, stage 3 and stage 4 form a cycle T.Enter next cycle after a cycle.It was shown in FIG. 9 for two weeks
Phase, the time of 2T is as example in total.
The utility model has the characteristics that following and advantage：
A kind of ac high frequency heater circuit is embedded in the charge circuit, and charging circuit can realize the low-temperature heat of battery
Function, while do not influence charging circuit charges normal function.First turned under low temperature low temperature exchange heating mode, to battery into
Row ac high frequency heats, and effectively avoids the formation of dendrite when battery low temperature charges, and improves battery charging security, and
Battery life will not be caused to decay.
The capacitance and inductance of selection can carry out energy exchange, the not additional consumed energy of circuit, merely with battery with battery
Internal resistance carries out battery exchanging the heat generated during charge and discharge the heating of from-inner-to-outer, and energy loss is small, efficient, warm raising speed
Degree is fast, and entire battery temperature uniformity is high in battery temperature-rise period.
By the control of switch tube and the type selecting of inductance, the size and frequency of alternating current can be controlled, disclosure satisfy that
The design requirement of wider range.
By controlling the consistent of battery charging and discharging energy in each ac cycle, ensure that battery does not consume in heating process
Self-energy, by the use of power grid as battery heat energy source.
Internal resistance is big at low temperature using battery for the battery heater circuit of the utility model, the characteristic more than heat, by electricity
The heating to battery is realized in the high frequency charge and discharge in pond.High-frequency ac charging heating will not have an impact battery security.This
Utility model can be obviously improved the charging performance and charge efficiency of battery under low temperature environment, and safe and reliable.
Above-described embodiment, which is available to, is familiar with person in the art to realize or using the utility model, be familiar with ability
The personnel in domain can in the case where not departing from the utility model thought of the utility model, above-described embodiment is made various modifications or
Variation, thus the scope of protection of the utility model is not limited by above-described embodiment, and should meet claims to mention
Inventive features maximum magnitude.
Claims (7)
1. a kind of battery heater circuit, which is characterized in that including：
Temperature sensor, in battery pack, the real time temperature of temperature sensor detection battery pack simultaneously sends temperature signal；
Cell managing device is connected with temperature sensor, and cell managing device receives the temperature signal that temperature sensor is sent；
Charging circuit is connected with cell managing device；
Wherein, cell managing device compares temperature signal with critical-temperature, and temperature signal is less than or equal to critical-temperature, electricity
Pond managing device control charging circuit works in high-frequency heating pattern, and charging circuit heats for battery pack；Temperature signal is higher than and faces
Boundary's temperature, cell managing device control charging circuit work in charge mode, charge for battery pack.
2. battery heater circuit as described in claim 1, which is characterized in that the charging circuit includes charger and heating electricity
Road, heater circuit include battery charger, battery charging freewheeling circuit, battery discharging circuit and battery discharge freewheeling circuit.
3. battery heater circuit as claimed in claim 2, which is characterized in that cell managing device control charging circuit works in
High-frequency heating pattern, battery charger and battery discharging circuit are with high frequency alternate conduction and disconnection, battery pack high frequency charge and discharge
To be heated, cell managing device control charging circuit works in charge mode, and battery charger turns on and battery always
Discharge circuit disconnects always, and battery pack carries out trickle charge.
4. battery heater circuit as claimed in claim 3, which is characterized in that the heater circuit includes：Capacitance, first switch
Pipe and second switch pipe, the first diode and the second diode, the first inductance and the second inductance, heater circuit insertion charger
Between output terminal and battery pack.
5. battery heater circuit as claimed in claim 4, which is characterized in that
Capacitance, first switch pipe, the first inductance and the second inductance and battery pack series connection, form battery charger；
Second diode, the first inductance and the second inductance and battery pack series connection, form battery charging freewheeling circuit；
Second switch pipe, the first inductance and the second inductance and battery pack series connection, form battery discharging circuit；
Capacitance, the first diode, the first inductance and the second inductance and battery pack series connection, form battery discharge freewheeling circuit.
6. battery heater circuit as claimed in claim 4, which is characterized in that the cell managing device includes heating controller
And driving circuit；
Driving circuit is connected to first switch pipe and second switch pipe, driving circuit control first switch pipe and second switch pipe
Conducting and disconnection；
Heating controller sends control signal according to the operating mode that cell managing device determines to driving circuit, in high-frequency heating
Pattern, the charging and discharging currents of heating controller sampling battery bag, by hysteresis comparator and driving circuit to first switch pipe and
Second switch pipe sends complementary drive signal, and first switch pipe and second switch pipe are with high frequency alternate conduction and disconnection, battery
Bag is with high frequency charge and discharge, and in charge mode, control unit controls first switch pipe to turn on always by driving circuit, second switch
Pipe disconnects always, battery pack trickle charge.
7. battery heater circuit as claimed in claim 4, which is characterized in that the first switch pipe and second switch pipe are
MOSFET or IGBT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721689457.3U CN207459113U (en) | 2017-12-07 | 2017-12-07 | Battery heater circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721689457.3U CN207459113U (en) | 2017-12-07 | 2017-12-07 | Battery heater circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207459113U true CN207459113U (en) | 2018-06-05 |
Family
ID=62276444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721689457.3U Active CN207459113U (en) | 2017-12-07 | 2017-12-07 | Battery heater circuit |
Country Status (1)
| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808173A (en) * | 2018-07-31 | 2018-11-13 | 北京航空航天大学 | Combined heated device and method inside and outside a kind of lithium ion battery low temperature |
| CN113948796A (en) * | 2020-07-17 | 2022-01-18 | 本田技研工业株式会社 | Temperature rising device |
-
2017
- 2017-12-07 CN CN201721689457.3U patent/CN207459113U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808173A (en) * | 2018-07-31 | 2018-11-13 | 北京航空航天大学 | Combined heated device and method inside and outside a kind of lithium ion battery low temperature |
| CN113948796A (en) * | 2020-07-17 | 2022-01-18 | 本田技研工业株式会社 | Temperature rising device |
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