CN102074754A - Heating circuit for batteries - Google Patents
Heating circuit for batteries Download PDFInfo
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- CN102074754A CN102074754A CN 201010603669 CN201010603669A CN102074754A CN 102074754 A CN102074754 A CN 102074754A CN 201010603669 CN201010603669 CN 201010603669 CN 201010603669 A CN201010603669 A CN 201010603669A CN 102074754 A CN102074754 A CN 102074754A
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- electric current
- battery
- memory element
- current memory
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- Y02T10/7005—
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- Y02T10/7077—
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention provides a heating circuit for batteries. The batteries comprise a first battery and a second battery; the heating circuit comprises a first switching device, a second switching device, a damping element R1, a damping element R2, a switching control module and a current storage element; the first battery, the damping element R1, the current storage element and the first switching device are connected in series to form a first charging/discharging circuit; the second battery, the damping element R2, the current storage element and the second switching device are connected in series to form a second charging/discharging circuit; when the current storage element is charged/discharged, the charging/discharging direction of the second charging/discharging circuit is opposite to that of the first charging/discharging circuit; and the switching control module is electrically connected with the first switching device and the second switching device and used for controlling alternated conduction of the first switching device and the second switching device and controlling the flow of the electrical energy between the first and second batteries and the current storage element. The heating circuit has the advantage of high heating efficiency.
Description
Technical field
The invention belongs to field of power electronics, relate in particular to a kind of heater circuit of battery.
Background technology
Consider that automobile need travel under the road conditions of complexity and environmental condition, perhaps some electronic equipment need use in relatively poor environmental condition, so, just need to adapt to these complicated situations as the battery of electric motor car or electronic equipment power source.And except considering these situations, also need consider the useful life of battery and the charge-discharge performance of battery, especially when electric motor car or electronic equipment are in the low temperature environment, more need battery to have excellent low temperature charge-discharge performance and higher input and output power-performance.
Generally speaking, can cause the impedance of battery to increase under cryogenic conditions, polarization strengthens, and causes the capacity of battery to descend thus.
In order to keep the capacity of battery under cryogenic conditions, improve the charge-discharge performance of battery, the invention provides a kind of heater circuit of battery.
Summary of the invention
The objective of the invention is can cause the impedance of battery to increase under cryogenic conditions at battery, polarization strengthens, and causes the problem of the capacity decline of battery thus, and a kind of heater circuit of battery is provided.
The invention provides a kind of heater circuit that is used for battery, described battery comprises first battery and second battery, described heater circuit comprises first switching device, second switch device, damping element R1, damping element R2, switch control module and electric current memory element, described first battery, damping element R1, electric current memory element and first switching device are in series, and constitute first charge-discharge circuit; Described second battery, damping element R2, electric current memory element and second switch device are in series, constitute second charge-discharge circuit, when described electric current memory element is discharged and recharged, this second charge-discharge circuit discharge and recharge direction and described first charge-discharge circuit to discharge and recharge direction opposite; Described switch control module is electrically connected with first switching device and second switch device, be used to control first switching device and second switch device alternate conduction, with control electric energy flowing between described first battery, electric current memory element and described second battery.
In the heater circuit of battery provided by the invention, can control described first switching device and second switch device alternate conduction by switch control module, thereby realize electric energy alternately back and forth flowing between first battery, electric current memory element and second battery, thereby cause damping element R1 and damping element R2 heating, so that first battery and second battery are heated.Because with regard to the electric current memory element, second charge-discharge circuit discharge and recharge direction and described first charge-discharge circuit to discharge and recharge direction opposite, the energy that is charged into the electric current memory element by first battery can be transferred to second battery smoothly, efficiency of heating surface height.
Other features and advantages of the present invention will partly be described in detail in embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with following embodiment one, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the circuit diagram of heater circuit provided by the invention;
Fig. 2 is the waveform sequential chart of heater circuit provided by the invention;
Fig. 3 is the circuit diagram according to another heater circuit provided by the invention;
Fig. 4 is the waveform sequential chart according to another heater circuit provided by the invention; And
Fig. 5 is the circuit diagram of an execution mode of the switching device in the heater circuit provided by the invention.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated.Should be understood that embodiment described herein only is used for description and interpretation the present invention, is not limited to the present invention.
It is to be noted, unless stated otherwise, when hereinafter mentioning, term " switch control module " for arbitrarily can be according to the moment output control command (for example impulse waveform) of condition of setting or setting thus control the correspondingly controller of conducting or shutoff of connected switching device, for example can be PLC; When hereinafter mentioning, term " switch " refers to and can realize break-make control or realize the switch that break-make is controlled according to the components and parts self characteristics by the signal of telecommunication, it both can be single-way switch, for example by bidirectional switch connect with diode constitute can unidirectional conducting switch, it also can be bidirectional switch, for example the MOS type field effect transistor (Metal Oxide Semiconductor Field EffectTransistor, MOSFET) or have an IGBT of anti-and fly-wheel diode; When hereinafter mentioning, term " bidirectional switch " but refer to and can realize break-make control or realize the switch of the two-way admittance of break-make control, MOSFET or have the IGBT of anti-and fly-wheel diode for example by the signal of telecommunication according to the components and parts self characteristics; When hereinafter mentioning, unidirectional semiconductor element refers to the semiconductor element with unidirectional conducting function, for example diode etc.; When hereinafter mentioning, term " charge storage cell " refers to can realize arbitrarily the device of charge storage, for example can be electric capacity etc.; When hereinafter mentioning, term " electric current memory element " refers to arbitrarily the device that can store electric current for example can be inductance etc.; When hereinafter mentioning, term " forward " refers to the direction that energy flows to accumulator from battery, and term " oppositely " refers to the direction that energy flows to battery from accumulator; When hereinafter mentioning, term " battery " comprises primary cell (for example dry cell, alkaline battery etc.) and secondary cell (for example lithium ion battery, nickel-cadmium cell, Ni-MH battery or lead-acid battery etc.); When hereinafter mentioning, term " damping element " refer to arbitrarily by to the inhibition that flowed of electric current with the device of realization energy consumption, for example can be for resistance etc.; When hereinafter mentioning, term " major loop " refers to the loop that battery and damping element, switching device and accumulator are composed in series.
Here also of particular note, consider the different qualities of dissimilar batteries, in the present invention, " battery " can refer to not comprise the resistance of endophyte resistance and stray inductance or endophyte resistance and the less ideal battery of inductance value of stray inductance, also can refer to include the power brick of endophyte resistance and stray inductance; Therefore, those skilled in the art should be understood that, when " battery " when not comprising the less ideal battery of the resistance of endophyte resistance and stray inductance or endophyte resistance and stray inductance inductance value, damping element R1 and damping element R2 refer to the damping element of first battery and second outside batteries respectively; When " battery " is when including the power brick of endophyte resistance and stray inductance, damping element R1 and damping element R2 both can refer to the damping element of first battery and second outside batteries respectively, also can refer to the dead resistance of first power brick and the second power brick inside respectively.
In order to guarantee the useful life of battery, can under low temperature condition, heat battery, when reaching heating condition, the control heater circuit is started working, and battery is heated, and when reaching when stopping heating condition, the control heater circuit quits work.
In the practical application of battery, along with the change of environment, can be according to the ambient conditions of reality to the heating condition of battery with stop heating condition setting, to guarantee the charge-discharge performance of battery.
Fig. 1 is the circuit diagram of heater circuit provided by the invention.As shown in Figure 1, the invention provides a kind of heater circuit of battery, described battery comprises the first battery E1 and the second battery E2, described heater circuit comprises first switching device 10, second switch device 20, damping element R1, damping element R2, switch control module 100 and electric current memory element L1, the described first battery E1, damping element R1, electric current memory element L1 and first switching device 10 are in series, and constitute first charge-discharge circuit; The described second battery E2, damping element R2, electric current memory element L1 and second switch device 20 are in series, constitute second charge-discharge circuit, when described electric current memory element L1 is discharged and recharged, this second charge-discharge circuit discharge and recharge direction and described first charge-discharge circuit to discharge and recharge direction opposite; Described switch control module 100 is electrically connected with first switching device 10 and second switch device 20, be used to control first switching device 10 and second switch device 20 alternate conduction, with control electric energy flowing between the described first battery E1, electric current memory element L1 and the described second battery E2.
Wherein, when described switch control module 100 can reach preset value at the electric current among the described electric current memory element L1, control described first switching device 10 and second switch device 20 and carry out the on off state switching, for example first switching device 10 switches to off state by conducting state, and second switch device 20 switches to conducting state by off state, flows into another battery thereby make by the electric energy of a battery storage in electric current memory element L1.The generation of the electric current that the mobile meeting of this electric energy is accompanied by, by constantly making electric current flow through damping element R1 and damping element R2, this damping element R1 and damping element R2 can produce heat, thereby the first battery E1 and the second battery E2 are heated.
Fig. 2 is the waveform sequential chart of heater circuit provided by the invention.The concrete course of work of heater circuit provided by the invention is described below in conjunction with Fig. 2.At first, 10 conductings of switch control module 100 controls first switching device, second switch device 20 disconnect, and the first battery E1 gives electric current memory element L1 charging, and the electric current in the electric current memory element L1 slowly increases (shown in the time period t among Fig. 2 1).Electric current I in electric current memory element L1
L1When increasing to preset value, switch control module 100 controls first switching device 10 disconnects, 20 conductings of second switch device, electric current memory element L1 fills its energy of storing to the second battery E2, and the electric current in the electric current memory element L1 slowly reduces (shown in time period t 2).Afterwards, after the energy release of electric current memory element L1 finished, the second battery E2 transferred the charging to electric current memory element L1, the electric current I in the electric current memory element L1
L1Slowly increase the interior electric current I of electric current memory element L1 this moment
L1Flow to and the flow direction opposite (shown in time period t 3) in time period t 1 and the t2.Afterwards, the electric current I in electric current memory element L1
L1When increasing to preset value, 10 conductings of switch control module 100 controls first switching device, second switch device 20 disconnect, and electric current memory element L1 fills its energy of storing to the first battery E1, the electric current I in the electric current memory element L1
L1Slowly reduce (shown in time period t 4, this moment, this heating circuit was finished a complete work period).So move in circles, make electric current continue to flow overdamp element R1 and damping element R2, this damping element R1 and damping element R2 can produce heat, thereby the first battery E1 and the second battery E2 are heated, till heating finishes.It should be noted that the U among Fig. 2
L1Represent the voltage of electric current memory element L1, this voltage U
L1Electric current I in electric current memory element L1
L1Forward increases or when oppositely reducing, is the forward steady state value; Electric current I in electric current memory element L1
L1Forward reduces or when oppositely increasing, is reverse steady state value.
In the above course of work of heater circuit of the present invention, can make electric current between the described first battery E1 and the second battery E2, alternately back and forth flow, realized the alternately heating of two batteries, efficiency of heating surface height.In addition; the existence of electric current memory element 1 can limit the size of current of flow through first and second batteries and first and second switching devices; also can limit by the size of current of described preset value to flow through first and second batteries and first and second switching devices; thereby the electric current of feasible flow through first and second batteries and first and second switching devices is less, has reached the purpose of protecting first and second batteries and first and second switching devices.
Fig. 3 is the circuit diagram according to another heater circuit provided by the invention.Preferably, as shown in Figure 3, heater circuit of the present invention also can comprise electric current memory element L2, and the described first battery E1, damping element R1, electric current memory element L2 and second switch device 20 are in series, and constitute the 3rd charge-discharge circuit; The described second battery E2, damping element R2, electric current memory element L2 and first switching device 10 are in series, constitute the 4th charge-discharge circuit, when described electric current memory element L2 is discharged and recharged, the 3rd charge-discharge circuit discharge and recharge direction and described the 4th charge-discharge circuit to discharge and recharge direction opposite; Described switch control module 100 is also by control first switching device 10 and second switch device 20 alternate conduction, with control electric energy flowing between the described first battery E1, electric current memory element L1, electric current memory element L2 and the described second battery E2.
When described switch control module can reach preset value at the electric current among described electric current memory element L1 or the electric current memory element L2, control described first switching device 10 and second switch device 20 and carry out the on off state switching.Fig. 4 is the waveform sequential chart of another heater circuit provided by the invention.The concrete course of work of another heater circuit provided by the invention is described below in conjunction with Fig. 4.
At first, 10 conductings of switch control module 100 controls first switching device, second switch device 20 disconnect, and the first battery E1 gives electric current memory element L1 charging, and the second battery E2 gives electric current memory element L2 charging, the electric current I in electric current memory element L1 and the L2
L1, I
L2Slowly increase (shown in the time period t among Fig. 4 1).Electric current I in electric current memory element L1 or L2
L1Or I
L2When increasing to preset value, switch control module 100 controls first switching device 10 disconnects, 20 conductings of second switch device, electric current memory element L1 fills its energy of storing to the second battery E2, electric current memory element L2 fills its energy of storing to the first battery E1, the electric current I in electric current memory element L1 and the L2
L1, I
L2Slowly reduce (shown in time period t 2).Afterwards, after the energy release of electric current memory element L1 and L2 finished, the second battery E2 transferred the charging to electric current memory element L1, and the first battery E1 transfers the charging to electric current memory element L2, the electric current I that electric current memory element L1 and L2 are interior
L1, I
L2Slowly increase the current direction in this moment electric current memory element L1 and the L2 and the flow direction opposite (shown in time period t 3) in time period t 1 and the t2.Afterwards, the electric current I in electric current memory element L1 or L2
L1Or I
L2When increasing to preset value, 10 conductings of switch control module 100 controls first switching device, second switch device 20 disconnect, electric current memory element L1 fills its energy of storing to the first battery E1, electric current memory element L2 fills its energy of storing to the second battery E2, the electric current I in electric current memory element L1 and the L2
L1, I
L2Slowly reduce (shown in time period t 4, this moment, this heating circuit was finished a complete work period).So move in circles, till heating finishes.It should be noted that the U among Fig. 4
L1And U
L2Represent the voltage of electric current memory element L1 and L2 respectively, this voltage U
L1Electric current I in electric current memory element L1
L1Forward increases or when oppositely reducing, is the forward steady state value; Electric current I in electric current memory element L1
L1Forward reduces or when oppositely increasing, is reverse steady state value.Voltage U
L2Also be like this.
In this heater circuit, all be in charging and discharging process all the time by setting up an electric current memory element L2, make win battery E1 and the second battery E2, impedance component R1 and impedance component R2 all have electric current to flow through all the time, more increase the heat efficiency.As for the electric current of flow through first and second batteries and first and second switching devices, also can obtain restriction by electric current memory element L1 and L2 and preset value, first and second batteries and first and second switching devices are protected.
In addition, need to prove, above " preset value " that occurs should be set according to the electric current that other components and parts/assemblies in the first battery E1, the second battery E2 and the heater circuit can bear, the setting of this value should take into account the efficiency of heating surface simultaneously and the first battery E1 and the second battery E2 do not caused damage, and also should consider volume, weight and the cost of heater circuit simultaneously.
Fig. 5 is the circuit diagram of an execution mode of the switching device in the heater circuit provided by the invention.As shown in Figure 5, described first switching device 10 and/or second switch device 20 can comprise K switch 11 and with the unidirectional semiconductor element D11 of these K switch 11 reverse parallel connections, described switch control module 100 is electrically connected with K switch 11, is used for coming by the turn-on and turn-off of control switch K11 the forward branch road turn-on and turn-off of control switch device 10.Turn-on and turn-off control to this K switch 11 can be carried out in the mesh region shown in Fig. 2 and Fig. 4.
Heater circuit provided by the present invention possesses following advantage:
(1) because with regard to the electric current memory element, second charge-discharge circuit discharge and recharge direction and described first charge-discharge circuit to discharge and recharge direction opposite, therefore electric energy can flow by replacing back and forth between first battery, electric current memory element and second battery, the electric current that is produced makes damping element R1 and damping element R2 generate heat by this, thereby first and second batteries are heated, realized the alternately heating of first and second batteries, efficiency of heating surface height.
(2) because the metering function of electric current memory element and the break-make that switch control module can come the control switch device according to preset value, thereby can the size of current of flow through first and second batteries and first and second switching devices be limited, avoid big electric current to damage first and second batteries and switching device.
(3) when using the double-current memory element, can make no matter when all be in charging and discharging state in first and second batteries, impedance component R1 and impedance component R2 all have electric current to flow through all the time, more increase the heat efficiency.
Though the present invention is disclosed by the foregoing description, yet the foregoing description is not that any the technical staff in the technical field of the invention without departing from the spirit and scope of the present invention, should do various changes and modification in order to qualification the present invention.Therefore protection scope of the present invention should be as the criterion with the scope that appended claims was defined.
Claims (7)
1. the heater circuit of a battery, described battery comprises first battery (E1) and second battery (E2), it is characterized in that, this heater circuit comprises first switching device (10), second switch device (20), damping element R1, damping element R2, switch control module (100) and electric current memory element L1
Described first battery (E1), damping element R1, electric current memory element L1 and first switching device (10) are in series, and constitute first charge-discharge circuit;
Described second battery (E2), damping element R2, electric current memory element L1 and second switch device (20) are in series, constitute second charge-discharge circuit, when described electric current memory element L1 is discharged and recharged, this second charge-discharge circuit discharge and recharge direction and described first charge-discharge circuit to discharge and recharge direction opposite;
Described switch control module (100) is electrically connected with first switching device (10) and second switch device (20), be used to control first switching device (10) and second switch device (20) alternate conduction, with control electric energy flowing between described first battery (E1), electric current memory element L1 and described second battery (E2).
2. heater circuit according to claim 1 is characterized in that, described damping element R1 and damping element R2 are respectively described first battery (E1) and the inner dead resistance of second battery (E2), and described electric current memory element L1 is an inductance.
3. heater circuit according to claim 1, it is characterized in that, described switch control module (100) is used for when the electric current of described electric current memory element L1 reaches preset value, controls described first switching device (10) and second switch device (20) and carries out the on off state switching.
4. heater circuit according to claim 1 is characterized in that, this heater circuit also comprises electric current memory element L2,
Described first battery (E1), damping element R1, electric current memory element L2 and second switch device (20) are in series, and constitute the 3rd charge-discharge circuit;
Described second battery (E2), damping element R2, electric current memory element L2 and first switching device (10) are in series, constitute the 4th charge-discharge circuit, when described electric current memory element L2 is discharged and recharged, the 3rd charge-discharge circuit discharge and recharge direction and described the 4th charge-discharge circuit to discharge and recharge direction opposite;
Described switch control module (100) is also by control first switching device (10) and second switch device (20) alternate conduction, with control electric energy flowing between described first battery (E1), electric current memory element L1, electric current memory element L2 and described second battery (E2).
5. heater circuit according to claim 4 is characterized in that, described electric current memory element L2 is an inductance.
6. heater circuit according to claim 4, it is characterized in that, described switch control module (100) is used for when the electric current of described electric current memory element L1 or electric current memory element L2 reaches preset value, controls described first switching device (10) and second switch device (20) and carries out the on off state switching.
7. according to the described heater circuit of each claim among the claim 1-6, it is characterized in that, described first switching device (10) and/or second switch device (20) comprise K switch 11 and with the unidirectional semiconductor element D11 of these K switch 11 reverse parallel connections, described switch control module (100) is electrically connected with K switch 11, is used for coming by the turn-on and turn-off of control switch K11 the forward branch road turn-on and turn-off of control switch device (10).
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010603669 CN102074754B (en) | 2010-12-23 | 2010-12-23 | Heating circuit for batteries |
| PCT/CN2011/074436 WO2012013065A1 (en) | 2010-07-30 | 2011-05-20 | Battery heating circuit |
| EP20110166882 EP2413454A1 (en) | 2010-07-30 | 2011-05-20 | Battery heating circuit |
| US13/187,874 US8829856B2 (en) | 2010-07-30 | 2011-07-21 | Circuits and methods for heating batteries in parallel using resonance components in series |
| TW100140588A TWI477027B (en) | 2010-12-23 | 2011-11-07 | Battery heating circuit |
| HK11112703.0A HK1158377A1 (en) | 2010-12-23 | 2011-11-23 | Battery heating circuit |
| US13/747,378 US9083196B2 (en) | 2010-07-30 | 2013-01-22 | Circuits and methods for heating batteries in parallel using resonance components in series |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010603669 CN102074754B (en) | 2010-12-23 | 2010-12-23 | Heating circuit for batteries |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102074754A true CN102074754A (en) | 2011-05-25 |
| CN102074754B CN102074754B (en) | 2012-05-02 |
Family
ID=44033179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010603669 Active CN102074754B (en) | 2010-07-30 | 2010-12-23 | Heating circuit for batteries |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN102074754B (en) |
| HK (1) | HK1158377A1 (en) |
| TW (1) | TWI477027B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103213508A (en) * | 2012-01-18 | 2013-07-24 | 比亚迪股份有限公司 | Driving control system of electric vehicle |
| WO2013107371A1 (en) * | 2012-01-18 | 2013-07-25 | Shenzhen Byd Auto R&D Company Limited | Electric vehicle running control system |
| CN108767345A (en) * | 2018-02-13 | 2018-11-06 | 南京博兰得电子科技有限公司 | A kind of battery preheating device and method |
| CN113746152A (en) * | 2020-05-29 | 2021-12-03 | 比亚迪股份有限公司 | Battery energy processing device and vehicle |
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|---|---|---|---|---|
| US5990661A (en) * | 1998-04-30 | 1999-11-23 | Daimlerchrysler Corporation | Circulating current battery heater |
| US6072301A (en) * | 1998-10-20 | 2000-06-06 | Chrysler Corporation | Efficient resonant self-heating battery electric circuit |
| US6340879B1 (en) * | 1999-02-03 | 2002-01-22 | Nokia Mobile Phones Ltd. | Device for reactivating an electric battery |
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| US5646534A (en) * | 1995-01-06 | 1997-07-08 | Chrysler Corporation | Battery monitor for electric vehicles |
| CN1864300B (en) * | 2003-10-03 | 2010-12-15 | 布莱克和戴克公司 | Methods of discharge control for a battery pack of a cordless power tool system, a cordless power tool system and battery pack adapted to provide over-discharge protection and discharge control |
| CN201667552U (en) * | 2010-03-30 | 2010-12-08 | 比亚迪股份有限公司 | Battery heating apparatus |
-
2010
- 2010-12-23 CN CN 201010603669 patent/CN102074754B/en active Active
-
2011
- 2011-11-07 TW TW100140588A patent/TWI477027B/en active
- 2011-11-23 HK HK11112703.0A patent/HK1158377A1/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5990661A (en) * | 1998-04-30 | 1999-11-23 | Daimlerchrysler Corporation | Circulating current battery heater |
| US6072301A (en) * | 1998-10-20 | 2000-06-06 | Chrysler Corporation | Efficient resonant self-heating battery electric circuit |
| US6340879B1 (en) * | 1999-02-03 | 2002-01-22 | Nokia Mobile Phones Ltd. | Device for reactivating an electric battery |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103213508A (en) * | 2012-01-18 | 2013-07-24 | 比亚迪股份有限公司 | Driving control system of electric vehicle |
| WO2013107371A1 (en) * | 2012-01-18 | 2013-07-25 | Shenzhen Byd Auto R&D Company Limited | Electric vehicle running control system |
| WO2013107373A1 (en) * | 2012-01-18 | 2013-07-25 | Shenzhen Byd Auto R&D Company Limited | Electric vehicle running control system |
| US9126499B2 (en) | 2012-01-18 | 2015-09-08 | Shenzhen Byd Auto R&D Company Limited | Electric vehicle running control system |
| US9263778B2 (en) | 2012-01-18 | 2016-02-16 | Shenzhen Byd Auto R&D Company Limited | Electric vehicle running control system |
| CN108767345A (en) * | 2018-02-13 | 2018-11-06 | 南京博兰得电子科技有限公司 | A kind of battery preheating device and method |
| CN113746152A (en) * | 2020-05-29 | 2021-12-03 | 比亚迪股份有限公司 | Battery energy processing device and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| HK1158377A1 (en) | 2012-07-13 |
| TW201251261A (en) | 2012-12-16 |
| CN102074754B (en) | 2012-05-02 |
| TWI477027B (en) | 2015-03-11 |
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Effective date of registration: 20200103 Address after: 518119 1 Yanan Road, Kwai Chung street, Dapeng New District, Shenzhen, Guangdong Patentee after: SHENZHEN BYD MICROELECTRONICS Co.,Ltd. Address before: BYD 518118 Shenzhen Road, Guangdong province Pingshan New District No. 3009 Patentee before: BYD Co.,Ltd. |
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Address after: 518119 No.1 Yan'an Road, Kuiyong street, Dapeng New District, Shenzhen City, Guangdong Province Patentee after: BYD Semiconductor Co.,Ltd. Address before: 518119 No.1 Yan'an Road, Kuiyong street, Dapeng New District, Shenzhen City, Guangdong Province Patentee before: BYD Semiconductor Co.,Ltd. Address after: 518119 No.1 Yan'an Road, Kuiyong street, Dapeng New District, Shenzhen City, Guangdong Province Patentee after: BYD Semiconductor Co.,Ltd. Address before: 518119 No.1 Yan'an Road, Kuiyong street, Dapeng New District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN BYD MICROELECTRONICS Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |