CN107069145B - Power battery heating device in electric automobile - Google Patents
Power battery heating device in electric automobile Download PDFInfo
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- CN107069145B CN107069145B CN201611136607.8A CN201611136607A CN107069145B CN 107069145 B CN107069145 B CN 107069145B CN 201611136607 A CN201611136607 A CN 201611136607A CN 107069145 B CN107069145 B CN 107069145B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 107
- 238000007600 charging Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 14
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Automation & Control Theory (AREA)
- Secondary Cells (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a power battery heating device in an electric automobile. The device is used for heating the power battery of electric automobile, and the device includes: the heating plate is arranged adjacent to one side face of the power battery and used for generating heat so as to improve the temperature of the environment where the power battery is located, wherein the heating plate is made of a material with the thermal conductivity higher than a preset threshold value; the control circuit is connected with the heating plates in a one-to-one correspondence mode and used for controlling whether the corresponding heating plates generate heat or not; and the processor is respectively connected with the at least one control circuit and used for outputting a control instruction to indicate whether the at least one control circuit controls the corresponding heating plate to generate heat. The invention solves the technical problem that the heating mode of the power battery in the electric automobile can not meet the actual application requirement in the related technology.
Description
Technical Field
The invention relates to the field of electric automobiles, in particular to a power battery heating device in an electric automobile.
Background
Because the current environmental pollution problem is increasingly serious, the technology and the industry of the electric automobile are greatly promoted and developed from the strategic heights of upgrading the automobile industry, saving energy, reducing emission and ensuring energy safety, and the electric automobile is popularized and applied. However, practical problems of some applications are also beginning to be highlighted, wherein the charge and discharge performance of the power battery in the electric vehicle is a main problem affecting the selection of the electric vehicle by users. Particularly in alpine regions, the charge-discharge performance and the service life of the power battery of the electric automobile are sharply reduced, and the driving mileage and the use cost of the automobile of a user are seriously influenced. Therefore, the power battery pack must have a reasonable, scientific and efficient heating system.
At present, the problem of heating the power battery is not sufficiently emphasized. The existing heating method mainly comprises the following steps: a battery internal heating method, a gas heating method, a hot plate heating method, a jacket heating method, a heating film heating method, and the like. The internal heating method is difficult to implement in an electric vehicle and affects the service life of the battery. The gas heating method has the problems of low heating speed and high heating energy consumption. The heating plate heating method is likely to cause uneven temperature distribution among the cells of the battery because the entire battery pack is heated. The heating method of the heating sleeve is not beneficial to the heat dissipation of the battery. The heating film heating method takes the power battery pack as a power supply and is limited by the capacity and the electric quantity of the battery.
Aiming at the technical problem that the heating mode of the power battery in the electric automobile in the related technology can not meet the practical application requirements, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides a power battery heating device in an electric automobile, which at least solves the technical problem that the heating mode of the power battery in the electric automobile in the related technology can not meet the practical application requirement.
According to an aspect of an embodiment of the present invention, there is provided a power battery heating apparatus in an electric vehicle, the apparatus being used for heating a power battery of the electric vehicle, including: the heating plate is arranged adjacent to one side face of the power battery and used for generating heat so as to improve the temperature of the environment where the power battery is located, wherein the heating plate is made of a material with the thermal conductivity higher than a preset threshold value; the control circuit is connected with the heating plates in a one-to-one correspondence mode and used for controlling whether the corresponding heating plates generate heat or not; and the processor is respectively connected with the at least one control circuit and used for outputting a control instruction to indicate whether the at least one control circuit controls the corresponding heating plate to generate heat.
Further, the apparatus further comprises: the power supply is used for providing a voltage source or a current source for at least one heating plate; and the power switch is arranged between the power supply and the at least one control circuit and is used for controlling the power supply to be connected with or disconnected from the at least one control circuit.
Furthermore, the power switch is also connected with the processor and used for being switched on or switched off according to a control instruction output by the processor.
Further, at least one slice hot plate includes first slice hot plate and second slice hot plate, and first slice hot plate sets up with power battery's first face is adjacent, and second slice hot plate sets up with power battery's second face is adjacent, and wherein, first face and second face are relative face.
Further, the at least one control circuit comprises: the first control circuit is correspondingly connected with the first heating plate; second control circuit, second control circuit corresponds with second piece hot plate and is connected, and wherein, first control circuit includes: first switch, first switch are used for controlling the break-make of first hot plate and power, and second control circuit includes: and the second switch is used for controlling the connection and disconnection of the second heating plate and the power supply.
Further, the first switch and the second switch are transistor switches, the control command comprises a first level and a second level, and the processor is connected with the first switch and the second switch and used for outputting the first level or the second level to the first switch and outputting the first level or the second level to the second switch.
Further, the apparatus further comprises: and the temperature sensor is arranged on the surface or inside the power battery and used for monitoring the temperature of the power battery, and the temperature sensor is also connected with the processor and used for sending the temperature to the processor.
Further, the apparatus further comprises: the processor is a battery management unit BMU of the electric automobile.
Further, the battery management unit BMU is further provided with a signal receiving terminal, and the battery management unit BMU is configured to receive the control signal through the signal receiving terminal to generate the control command.
Further, the power battery is electrically connected with the at least one heating plate and is connected with the battery management unit BMU, and is used for receiving a power supply instruction of the battery management unit BMU so as to provide power for the at least one heating plate.
In the embodiment of the invention, at least one heating plate is arranged adjacent to one side surface of the power battery and used for generating heat to improve the temperature of the environment where the power battery is located, wherein the heating plate is made of a material with the thermal conductivity higher than a preset threshold value; the control circuit is connected with the heating plates in a one-to-one correspondence mode and used for controlling whether the corresponding heating plates generate heat or not; the processor is respectively connected with the at least one control circuit and used for outputting a control instruction to indicate whether the at least one control circuit controls the corresponding heating plate to generate heat, so that the technical problem that the heating mode of the power battery in the electric automobile cannot meet the actual application requirement in the related technology is solved, and the technical effect of meeting the heating requirement of the power battery in the electric automobile is further realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic diagram of an alternative power battery heating arrangement in an electric vehicle according to an embodiment of the present invention;
fig. 2 is a schematic diagram of another alternative power battery heating apparatus in an electric vehicle according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
According to an aspect of an embodiment of the present invention, there is provided a power battery heating apparatus in an electric vehicle.
Fig. 1 is a schematic diagram of an alternative power battery heating apparatus in an electric vehicle according to an embodiment of the present invention, as shown in fig. 1, the apparatus including:
the heating plate is arranged adjacent to one side face of the power battery and used for generating heat so as to improve the temperature of the environment where the power battery is located, wherein the heating plate is made of a material with the thermal conductivity higher than a preset threshold value; the control circuit is connected with the heating plates in a one-to-one correspondence mode and used for controlling whether the corresponding heating plates generate heat or not; and the processor is respectively connected with the at least one control circuit and used for outputting a control instruction to indicate whether the at least one control circuit controls the corresponding heating plate to generate heat.
The embodiment is characterized in that at least one heating plate is arranged adjacent to one side surface of the power battery and used for generating heat to improve the temperature of the environment where the power battery is located, wherein the heating plate is made of a material with the thermal conductivity higher than a preset threshold value; the control circuit is connected with the heating plates in a one-to-one correspondence mode and used for controlling whether the corresponding heating plates generate heat or not; the processor is respectively connected with the at least one control circuit and used for outputting a control instruction to indicate whether the at least one control circuit controls the corresponding heating plate to generate heat, so that the technical problem that the heating mode of the power battery in the electric automobile cannot meet the actual application requirement in the related technology is solved, and the technical effect of meeting the heating requirement of the power battery in the electric automobile is further realized.
Preferably, the apparatus further comprises: the power supply is used for providing a voltage source or a current source for at least one heating plate; and the power switch is arranged between the power supply and the at least one control circuit and is used for controlling the power supply to be connected with or disconnected from the at least one control circuit.
Preferably, the power switch is further connected to the processor for turning on or off according to a control command output by the processor.
Preferably, at least a slice hot plate includes first slice hot plate and second slice hot plate, and first slice hot plate sets up with power battery's first face is adjacent, and second slice hot plate sets up with power battery's second face is adjacent, and wherein, first face and second face are relative face.
Preferably, the at least one control circuit comprises: the first control circuit is correspondingly connected with the first heating plate; second control circuit, second control circuit corresponds with second piece hot plate and is connected, and wherein, first control circuit includes: first switch, first switch are used for controlling the break-make of first hot plate and power, and second control circuit includes: and the second switch is used for controlling the connection and disconnection of the second heating plate and the power supply.
Preferably, the first switch and the second switch are transistor switches, the control command includes a first level and a second level, and the processor is connected to the first switch and the second switch and configured to output the first level or the second level to the first switch and output the first level or the second level to the second switch.
Preferably, the apparatus further comprises: and the temperature sensor is arranged on the surface or inside the power battery and used for monitoring the temperature of the power battery, and the temperature sensor is also connected with the processor and used for sending the temperature to the processor.
Preferably, the apparatus further comprises: the processor is a battery management unit BMU of the electric automobile.
Preferably, the battery management unit BMU is further provided with a signal receiving terminal, and the battery management unit BMU is configured to receive the control signal through the signal receiving terminal to generate the control command.
Preferably, the power battery is electrically connected with the at least one heating plate and connected with the battery management unit BMU, and is used for receiving a power supply instruction of the battery management unit BMU to provide power for the at least one heating plate.
Fig. 2 is a schematic diagram of another alternative power battery heating device in an electric vehicle according to an embodiment of the present invention, which can be taken as a preferred embodiment of the above-mentioned embodiments. As shown in fig. 2, the apparatus includes: heating plate 1, heating plate 2, switch K1, switch K2, switch K0, total control switch K, battery management unit BMU, sensor.
The battery in fig. 2 is a power battery cell or a series module of a plurality of battery cells of an electric vehicle. The heating sheets 1 and 2 are made of a heating material having a high temperature rise speed, and can rapidly generate a large amount of heat when current is passed through the heating sheets for heating the battery. The master control switch K is a master control switch of the battery unit, and the on-off of the master control switch K is controlled by the battery management unit BMU. The switch K0 is a control switch for charging the battery, and the on/off of the switch is controlled by the battery management unit BMU. The switch K1 is a control switch of the heater chip 1, and is turned on and off by the battery management unit BMU. The switch K2 is a control switch of the heater chip 2, and is turned on and off by the battery management unit BMU. The sensors can comprise temperature sensors, current sensors and voltage sensors, and each sensor can correspondingly acquire real-time temperature, current and voltage information of the battery and transmit the real-time temperature, current and voltage information to the BMU as a control strategy judgment basis. The battery management unit BMU is a controller of the battery for collecting battery information and transmitting a charging, discharging or heating control signal. The DC + and the DC-are the connecting terminals of the anode and the cathode of the battery and are used for being externally connected with a charging power supply. CANH and CANL are CAN communication positive and negative connecting terminals for connecting a battery management system BMS. 12V + and 12V-are low-voltage auxiliary power supply connecting terminals for externally connecting an auxiliary power supply.
The vehicle-mounted power battery can be formed by connecting N battery units in parallel. The battery management system BMS is connected via the CANH and CANL buses and 12V + and 12V-terminals, and the external power supply, i.e. the charger, is connected via DC + and DC-. The low-voltage auxiliary power supply is provided by a charger. In the charging process, the BMS is responsible for issuing a charging command to the BMU of the battery unit, collecting information such as temperature, voltage and current collected by the BMU, and sending a charging state and a charging demand to the charger through the CAN bus.
When the heating device provided by the embodiment is used, the temperature threshold T0 for starting the heating system can be set for the BMU firstly, the switches K0, K1 and K2 are in an off state before the charging of the battery is started, and the BMU controls the master control switch K to be closed when the charging is started. When the BMU detects that the ambient temperature of the battery is higher than T0 through the sensor, the switch K0 is closed, and a battery charging program is started to charge the battery. When the BMU detects that the ambient temperature of the battery is equal to or less than T0 through the sensor, the heating power supply mode may be selected according to the battery voltage. The heating power supply mode includes: external power heating and battery heating. When the battery voltage is less than the voltage threshold U0, the external power heating mode is initiated: the switch K0 is opened and the switches K1 and K2 are closed to heat the heater chip 1 and the heater chip 2. When the battery voltage is greater than the equal voltage threshold U0, a battery heating mode is initiated: the switches K are opened and the switches K0, K1 and K2 are closed to heat the heater chip 1 and the heater chip 2. The BMU monitors the battery temperature, voltage and current in real time during charging, and continues to monitor the ambient temperature of the battery when the ambient temperature of the battery returns to T0.
The order of the embodiments of the present application described above does not represent the merits of the embodiments.
In the above embodiments of the present application, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present application and it should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.
Claims (5)
1. A power battery heating device in an electric automobile is characterized in that the device is used for heating a power battery of the electric automobile, and comprises:
the heating plate is arranged adjacent to one side face of the power battery and used for generating heat to improve the temperature of the environment where the power battery is located, wherein the heating plate is made of a material with the thermal conductivity higher than a preset threshold value;
the control circuit is connected with the at least one heating plate in a one-to-one correspondence manner and is used for controlling whether the corresponding heating plate generates heat or not;
the processor is respectively connected with the at least one control circuit and used for outputting a control instruction to indicate whether the at least one control circuit controls the corresponding heating plate to generate heat or not;
the at least one heating plate comprises a first heating plate and a second heating plate, the first heating plate is arranged adjacent to a first surface of the power battery, the second heating plate is arranged adjacent to a second surface of the power battery, and the first surface and the second surface are opposite;
the power supply is used for providing a voltage source or a current source for the at least one heating plate;
the power switch is arranged between the power supply and the at least one control circuit and is used for controlling the power supply and the at least one control circuit to be switched on or switched off;
the power switch is also connected with the processor and used for being switched on or switched off according to the control instruction output by the processor;
the at least one control circuit comprises: the first control circuit is correspondingly connected with the first heating plate; a second control circuit, the second control circuit with the second piece hot plate corresponds and is connected, wherein, first control circuit includes: the first switch is used for controlling the connection and disconnection of the first heating plate and the power supply, and the second control circuit comprises: the second switch is used for controlling the connection and disconnection of the second heating plate and the power supply;
wherein the apparatus further comprises: the processor is a Battery Management Unit (BMU) of the electric automobile;
in the charging process, a battery management system BMS is responsible for issuing a charging command to a battery management unit BMU, collecting the temperature, the voltage and the current collected by the battery management unit BMU, and sending the charging state and the charging demand to a charger through a CAN bus, wherein the charger is an external power supply.
2. The apparatus of claim 1, wherein the first switch and the second switch are transistor switches, wherein the control instructions comprise a first level and a second level,
the processor is connected to the first switch and the second switch, and is configured to output the first level or the second level to the first switch and output the first level or the second level to the second switch.
3. The apparatus of claim 1, further comprising:
the temperature sensor is arranged on the surface or inside the power battery and used for monitoring the temperature of the power battery, wherein the temperature sensor is also connected with the processor and used for sending the temperature to the processor.
4. The apparatus according to claim 1, wherein the battery management unit BMU is further provided with a signal receiving terminal, and the battery management unit BMU is configured to receive a control signal through the signal receiving terminal to generate the control command.
5. The apparatus of claim 1, wherein the power battery is electrically connected to the at least one heating plate and to the battery management unit BMU for receiving a power command from the battery management unit BMU to provide power to the at least one heating plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611136607.8A CN107069145B (en) | 2016-12-09 | 2016-12-09 | Power battery heating device in electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611136607.8A CN107069145B (en) | 2016-12-09 | 2016-12-09 | Power battery heating device in electric automobile |
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| Publication Number | Publication Date |
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| CN107069145A CN107069145A (en) | 2017-08-18 |
| CN107069145B true CN107069145B (en) | 2020-04-24 |
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| CN201611136607.8A Active CN107069145B (en) | 2016-12-09 | 2016-12-09 | Power battery heating device in electric automobile |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2718888A1 (en) * | 1994-04-15 | 1995-10-20 | Schliffer Albert | Heating process for heating motor vehicle battery using electric heating plates fitted to sides of battery |
| US5756227A (en) * | 1994-11-18 | 1998-05-26 | Honda Giken Kogyo Kabushiki Kaisha | Battery assembly with temperature control mechanism |
| CN203932258U (en) * | 2014-05-27 | 2014-11-05 | 江苏奥新新能源汽车有限公司 | A kind of heating of battery system |
| CN105818708A (en) * | 2016-04-21 | 2016-08-03 | 东软集团股份有限公司 | Battery charging system and method |
| CN105870542A (en) * | 2016-06-13 | 2016-08-17 | 重庆长安汽车股份有限公司 | Power battery low-temperature charging heating system |
-
2016
- 2016-12-09 CN CN201611136607.8A patent/CN107069145B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2718888A1 (en) * | 1994-04-15 | 1995-10-20 | Schliffer Albert | Heating process for heating motor vehicle battery using electric heating plates fitted to sides of battery |
| US5756227A (en) * | 1994-11-18 | 1998-05-26 | Honda Giken Kogyo Kabushiki Kaisha | Battery assembly with temperature control mechanism |
| CN203932258U (en) * | 2014-05-27 | 2014-11-05 | 江苏奥新新能源汽车有限公司 | A kind of heating of battery system |
| CN105818708A (en) * | 2016-04-21 | 2016-08-03 | 东软集团股份有限公司 | Battery charging system and method |
| CN105870542A (en) * | 2016-06-13 | 2016-08-17 | 重庆长安汽车股份有限公司 | Power battery low-temperature charging heating system |
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| CN107069145A (en) | 2017-08-18 |
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