CN110085949B - Battery module and electric automobile - Google Patents

Battery module and electric automobile Download PDF

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Publication number
CN110085949B
CN110085949B CN201910487822.XA CN201910487822A CN110085949B CN 110085949 B CN110085949 B CN 110085949B CN 201910487822 A CN201910487822 A CN 201910487822A CN 110085949 B CN110085949 B CN 110085949B
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China
Prior art keywords
temperature
battery module
cover plate
control instruction
battery
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Active
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CN201910487822.XA
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Chinese (zh)
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CN110085949A (en
Inventor
汪秀山
袁承超
劳力
马俊峰
王扬
周鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Jianghuai Huating battery system Co.,Ltd.
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Sinoev Hefei Technologies Co Ltd
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Priority to CN201910487822.XA priority Critical patent/CN110085949B/en
Publication of CN110085949A publication Critical patent/CN110085949A/en
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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
    • H01M10/613—Cooling or keeping cold
    • 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
    • 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
    • H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
    • 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
    • H01M10/635—Control systems based on ambient temperature
    • 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
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
    • 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
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
    • H01M10/6571—Resistive heaters
    • 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
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
    • H01M10/6572—Peltier elements or thermoelectric devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Secondary Cells (AREA)
  • Automation & Control Theory (AREA)

Abstract

The application provides a battery module and electric automobile, battery module include temperature regulation unit, first temperature sensor, second temperature sensor, a plurality of electric core and be used for fixing the first apron and the second apron of a plurality of electric cores. Measure the inside temperature and the outside temperature of battery module respectively through first temperature sensor and second temperature sensor, and then obtain the inside temperature of battery module and the difference in temperature of outside temperature, carry out temperature regulation to the peripheral electric core in a plurality of electric cores through establishing the temperature regulation unit who corresponds the position with second temperature sensor, adjust the outside temperature of battery module to the inside temperature that makes battery module and the difference in temperature of outside temperature are located the settlement scope. Adopt battery module and electric automobile that this application provided, the too big problem of inside temperature and the outside temperature difference of temperature that can improve battery module.

Description

Battery module and electric automobile
Technical Field
The application relates to the field of new energy, particularly, relate to a battery module and electric automobile.
Background
The development of new energy is trending, and the performance of the power battery module as a main energy supply device in the new energy directly influences the development of the whole industry. At present, for a power battery module, the problem that the temperature difference between the internal temperature and the external temperature of the battery module is too large exists. Once the temperature difference is too large, not only the service life of the battery module is shortened, but also the power supply efficiency of the battery module is reduced.
In view of this, how to improve the problem of excessive temperature difference between the internal temperature and the external temperature of the battery module is needed to be solved.
Disclosure of Invention
The application provides a battery module and electric automobile.
In a first aspect, the present application provides a battery module, including a temperature adjustment unit, a first temperature sensor, a second temperature sensor, a plurality of battery cells, and a first cover plate and a second cover plate for fixing the plurality of battery cells;
the plurality of cells are disposed between the first cover plate and the second cover plate;
the first temperature sensor is arranged at a position among the plurality of battery cells and used for detecting the internal temperature of the battery module;
the second temperature sensor is arranged at the position of a peripheral battery cell in the plurality of battery cells and used for detecting the external temperature of the battery module;
the temperature adjusting unit is arranged at a position corresponding to the second temperature sensor and used for receiving a control instruction generated according to the internal temperature and the external temperature and adjusting the temperature of a peripheral electric core of the battery module according to the control instruction, so that the temperature difference between the internal temperature and the external temperature of the battery module is within a set range.
Optionally, the temperature adjustment unit comprises a housing, a connector, a heater and a refrigerator;
the shell is connected with the first cover plate and the second cover plate through the connecting piece;
the heater and the refrigerator are arranged inside the shell;
when the temperature difference between the internal temperature and the external temperature exceeds a set range and the external temperature is lower than the internal temperature, the heater receives a heating control instruction, and the heater is used for heating a peripheral electric core of the battery module according to the heating control instruction;
when the temperature difference between the internal temperature and the external temperature exceeds a set range and the external temperature is higher than the internal temperature, the refrigerator receives a cooling control instruction, and the refrigerator is used for cooling the peripheral electric core of the battery module according to the cooling control instruction.
Optionally, the first cover plate and the second cover plate are respectively provided with a slide way, and the slide way on the first cover plate extends from one side of the first cover plate to the opposite side;
the slide way on the second cover plate extends from one side of the second cover plate to the opposite side;
the connecting piece is respectively connected with the slide ways on the first cover plate and the second cover plate in a sliding mode and used for driving the temperature adjusting unit to move close to or far away from the battery cell according to a control instruction.
Optionally, the heater comprises a heating resistor.
Optionally, the refrigerator comprises a semiconductor refrigerator.
Optionally, the temperature adjustment unit further comprises a wire, and the housing comprises a through hole;
one end of the lead is respectively connected with the heater and the refrigerator through holes, the other end of the lead is connected with the power supply through a switch, and the switch is used for supplying the electric quantity of the power supply to the heater or the refrigerator according to a control instruction so as to regulate and control the temperature.
Optionally, the casing further includes a radiation protection layer, and the radiation protection layer is coated on the outer surface of the casing and is used for absorbing heat generated by the battery core.
Optionally, the radiation protection layer comprises an aluminum foil layer and a polyester alkene layer;
the aluminum foil layer is coated on the outer surface of the shell, and the polyester alkene layer is coated on the surface, far away from the shell, of the aluminum foil layer.
In a second aspect, the present application provides an electric vehicle, including a controller and the battery module of the first aspect, wherein the controller is electrically connected to the battery module;
the first temperature sensor is used for detecting the internal temperature of the battery module and sending the internal temperature to the controller;
the second temperature sensor is used for detecting the external temperature of the battery module and sending the external temperature to the controller;
the controller is used for calculating the temperature difference between the internal temperature and the external temperature according to the received internal temperature and the received external temperature, judging whether the temperature difference is within a set range, and if the temperature difference is not within the set range, sending a control instruction to the temperature adjusting unit;
the temperature adjusting unit is used for receiving the control instruction and adjusting the temperature of the peripheral electric core of the battery module according to the control instruction, so that the temperature difference between the internal temperature and the external temperature of the battery module is within the set range.
Optionally, the control instruction includes a movement position of the temperature adjustment unit and an adjustment power corresponding to the movement position, and the temperature adjustment unit is configured to adjust the temperature of a peripheral battery cell of the battery module according to the control instruction through the following steps:
moving to a movement position contained in the control instruction according to the control instruction;
and adjusting the temperature according to the control instruction by using the adjusting power contained in the control instruction so as to enable the temperature difference between the internal temperature and the external temperature to be within a set range.
The application provides a battery module and electric automobile, through setting up first temperature sensor and second temperature sensor respectively between the inside electric core of battery module and peripheral electric core detect the inside temperature and the outside temperature of battery module, then carry out the temperature regulation and control to the peripheral electric core of battery module through the control command that temperature regulation unit generated according to inside temperature and outside temperature to the difference in temperature that makes inside temperature and outside temperature is located the settlement within range. Thereby the difference in temperature of the inside temperature of control battery module and outside temperature effectively, and then improved the life of battery, guaranteed the energy supply efficiency of battery.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below. It is appreciated that the following drawings depict only certain embodiments of the application and are therefore not to be considered limiting of its scope. For a person skilled in the art, it is possible to derive other relevant figures from these figures without inventive effort.
Fig. 1 is a schematic structural diagram of a battery module according to an embodiment of the present disclosure;
fig. 2 is an exploded schematic view of a battery module according to an embodiment of the present disclosure;
fig. 3 is an exploded schematic view of a temperature adjustment unit according to an embodiment of the present disclosure;
fig. 4 is a schematic partial structure diagram of a battery module according to an embodiment of the present disclosure;
fig. 5 is a schematic block diagram of a process of adjusting the temperature of the peripheral electric core of the battery module by the temperature adjustment unit according to the control instruction according to the embodiment of the application.
Icon: 10-a temperature regulating unit; 100-a housing; 101-a connector; 102-a heater; 103-a refrigerator; 104-a wire; 105-a via; 11-electric core; 12-a first cover plate; 120-a slide; 13-second cover plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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 application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it is to be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like, refer to orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships that the products of the application conventionally position when in use, or the orientations or positional relationships that are conventionally understood by those skilled in the art, and are used for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is also to be noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be interpreted broadly, for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
The following detailed description of embodiments of the present application will be made with reference to the accompanying drawings.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a battery module according to an embodiment of the present disclosure, and fig. 2 is a schematic structural diagram of an explosion of the battery module according to the embodiment of the present disclosure. The battery module comprises a temperature adjusting unit 10, a first temperature sensor, a second temperature sensor, a plurality of battery cells 11, and a first cover plate 12 and a second cover plate 13 for fixing the plurality of battery cells 11.
The plurality of battery cells 11 are disposed between the first cover plate 12 and the second cover plate 13.
In this embodiment, the shapes of the first cover plate 12 and the second cover plate 13 may be flexibly set, for example, the first cover plate 12 and the second cover plate 13 may be square, and the plurality of battery cells 11 may be arranged together according to a square area defined by the first cover plate 12 and the second cover plate 13.
The first temperature sensor is disposed at a position between the plurality of battery cells 11, and is configured to detect an internal temperature of the battery module.
In this embodiment, the position where the first temperature sensor is disposed may be a gap between the middle position cell 11 and the surrounding cells 11 in the plurality of cells 11, and the internal temperature of the battery module may refer to a temperature around the middle position cell 11 in the plurality of cells 11. In other embodiments, the first temperature sensors may be multiple ones, and are disposed between the battery cells 11 located near the middle of the multiple battery cells 11, and the internal temperature of the battery module may be determined by an average value of the temperatures collected by the multiple first temperature sensors.
The second temperature sensor is arranged at a position where the peripheral cell 11 is located in the plurality of cells 11, and is used for detecting the external temperature of the battery module.
In this embodiment, the second temperature sensor may be disposed at a position on the outermost battery cell 11 of the plurality of battery cells 11, and a plurality of second temperature sensors may be disposed on each side of the battery module in which the plurality of battery cells 11 are arranged according to the area determined by the first cover plate 12 and the second cover plate 13. The external temperature of battery module can be a plurality of, and the external temperature of different positions can be acquireed at the second temperature sensor who corresponds the position by the setting, and the difference in temperature of the internal temperature of different positions and external temperature can be calculated by different external temperatures and same internal temperature and obtain, and different positions can have different differences in temperature promptly.
The temperature adjusting unit 10 is disposed at a position corresponding to the second temperature sensor, and is configured to receive a control instruction generated according to the internal temperature and the external temperature, and adjust the temperature of the peripheral battery cell 11 of the battery module according to the control instruction, so that the temperature difference between the internal temperature and the external temperature of the battery module is within a set range.
In this embodiment, the temperature adjustment unit 10 may be multiple, the number of the temperature adjustment unit 10 may be the same as the number of the second temperature sensors, the setting position of the temperature adjustment unit 10 may correspond to the position of the second temperature sensor, and the peripheral battery cell 11 in the corresponding position may be temperature-adjusted according to the control instruction, so that the temperature difference of the corresponding position is within the setting range.
Referring to fig. 3, fig. 3 is an exploded schematic view of a temperature adjustment unit 10 according to an embodiment of the present disclosure. The temperature adjusting unit 10 may include a case 100, a connector 101, a heater 102, and a refrigerator 103.
The housing 100 is connected to the first cover plate 12 and the second cover plate 13 through the connecting member 101.
The heater 102 and the refrigerator 103 are disposed inside the case 100.
When the temperature difference between the internal temperature and the external temperature exceeds a set range and the external temperature is lower than the internal temperature, the heater 102 receives a heating control instruction, and the heater 102 is configured to heat the peripheral battery cell 11 of the battery module according to the heating control instruction.
When the temperature difference between the internal temperature and the external temperature exceeds a set range and the external temperature is higher than the internal temperature, the refrigerator 103 receives a cooling control instruction, and the refrigerator 103 is used for cooling the peripheral battery cell 11 of the battery module according to the cooling control instruction.
In this embodiment, the heater 102 and the refrigerator 103 may be integrated inside the housing 100, and the two devices may be isolated from each other by using an insulating material.
Referring to fig. 4, fig. 4 is a partial schematic structural view of a battery module according to an embodiment of the present disclosure, where the first cover plate 12 and the second cover plate 13 are respectively provided with a slide 120, and the slide 120 on the first cover plate 12 extends from one side of the first cover plate 12 to the opposite side.
The runners 120 on the second cover plate 13 extend from one side of the second cover plate 13 to the opposite side.
The connecting member 101 is slidably connected to the sliding ways 120 of the first cover plate 12 and the second cover plate 13, respectively, and the connecting member 101 is configured to drive the temperature adjustment unit 10 to move closer to or away from the battery cell 11 according to a control instruction.
In this embodiment, the extending direction of the slide 120 may be opposite to the extending direction, and may also be understood as extending to the direction of the battery cell 11 closest to the slide 120. The connecting member 101 may be a slider, and the first cover plate 12 and the second cover plate 13 may be provided with a slide 120 slidably connected to the slider, so that the slider may drive the temperature adjusting unit 10 to move toward or away from the battery cell 11. In other embodiments, the connecting member 101 may also be a pulley, and sliding rails that are matched with the pulley may be disposed on the first cover plate 12 and the second cover plate 13, so that the pulley may drive the temperature adjustment unit 10 to move toward or away from the battery cell 11.
Further, in the present embodiment, the heater 102 may be heated by using a heating resistor as a heating element, and in other embodiments, may be heated by using an infrared quartz heating tube or the like as a heating element.
Further, in this embodiment, the refrigerator 103 may use the semiconductor refrigerator 103 as a cooling element to cool down, and in other embodiments, a cooling system (composed of a compressor, a condenser, a throttling component, and an evaporator) may also be used to cool down the peripheral electric core 11 of the battery module.
Referring to fig. 3 again, the temperature adjustment unit 10 further includes a wire 104, and the housing 100 includes a through hole 105.
One end of the lead wire 104 is connected with the heater 102 and the refrigerator 103 through a through hole 105, and the other end is connected with a power supply through a switch, wherein the switch is used for providing the electric quantity of the power supply to the heater 102 or the refrigerator 103 according to a control instruction to perform temperature regulation and control.
Further, the casing 100 further includes a radiation protection layer, and the radiation protection layer is coated on the outer surface of the casing 100 and is used for absorbing heat generated by the battery cell 11.
Further, the radiation protective layer may include an aluminum foil layer and a polyester olefin layer.
The aluminum foil layer is coated on the outer surface of the shell 100, and the polyester alkene layer is coated on the surface of the aluminum foil layer far away from the shell 100.
In this embodiment, the radiation-proof layer can prevent the surface material of the temperature adjustment unit 10 from reflecting the heat emitted from the battery cell 11, so as not to affect the temperature of the battery cell.
The embodiment of the application further provides an electric automobile, including controller and aforementioned battery module, the controller with the battery module electricity is connected.
The first temperature sensor is used for detecting the internal temperature of the battery module and sending the internal temperature to the controller.
The second temperature sensor is used for detecting the external temperature of the battery module and sending the external temperature to the controller.
The controller is used for calculating the temperature difference between the internal temperature and the external temperature according to the received internal temperature and the received external temperature, judging whether the temperature difference is within a set range, and if the temperature difference is not within the set range, sending a control instruction to the temperature adjusting unit 10.
The temperature adjusting unit 10 is configured to receive the control instruction, and adjust the temperature of the peripheral electric core 11 of the battery module according to the control instruction, so that the temperature difference between the internal temperature and the external temperature of the battery module is within the set range.
Referring to fig. 5, fig. 5 is a schematic block diagram illustrating a process flow of the temperature adjustment unit 10 according to a control instruction to adjust the temperature of the peripheral electric core 11 of the battery module according to the embodiment of the present application. This step includes step S201 and step S202.
And step S201, moving to a moving position contained in the control command according to the control command.
In the present embodiment, the control command issued by the controller may include the movement position of the temperature adjustment unit 10, for example, the movement positions of the temperature adjustment unit 10 may be L1, L2, and L3, wherein the distances from the L1, L2, and L3 to the battery cells 11 may be sequentially reduced (i.e., sequentially closer to the battery cells 11).
Step S202, adjusting the temperature according to the control instruction by the adjusting power contained in the control instruction so as to enable the temperature difference between the internal temperature and the external temperature to be within a set range.
In this embodiment, the control instruction may further include the adjustment power of the temperature adjustment unit 10 at different positions. For example, the temperature adjusting unit 10 may have powers of Q1, Q2, and Q3 in cooling, wherein powers of Q1, Q2, and Q3 are sequentially increased, and the temperature adjusting unit 10 may have powers of Q4, Q5, and Q6 in heating, wherein powers of Q4, Q5, and Q6 are sequentially increased.
In the present embodiment, when the temperature adjusting unit 10 is located at the position L1, the corresponding cooling and heating powers may be Q1 and Q4, respectively; when the temperature adjusting unit 10 is located at the position L2, the corresponding cooling and heating powers may be Q2 and Q5, respectively; when the temperature adjusting unit 10 is located at the position L3, the corresponding cooling and heating powers may be Q3 and Q6, respectively. For example, the setting range of the temperature difference between the internal temperature and the external temperature is 2 ℃, if the internal temperature is lower than the external temperature and the temperature difference is between 2 ℃ and 5 ℃, it can be considered that the temperature difference is small, the controller can send a control command to the temperature adjustment unit 10 to move the temperature adjustment unit to an L1 which is far away from the battery cell 11, and the peripheral battery cell 11 of the battery module is cooled by using Q1 with relatively small power; if the internal temperature is lower than the external temperature and the temperature difference is between 5 ℃ and 10 ℃, the temperature difference is considered to be medium, the controller can send a control instruction to the temperature adjusting unit 10 to enable the temperature adjusting unit 10 to move to the L2 with a medium distance from the battery cell 11, and the Q2 with corresponding medium power is adopted to cool the peripheral battery cell 11 of the battery module; if inside temperature is less than the outside temperature this moment, and the difference in temperature exceeds 10 ℃, can regard this moment the difference in temperature great, the controller can send control command to temperature regulation unit 10, makes it move to the L3 department that is close apart from electric core 11 position distance to adopt the great Q3 of corresponding power to cool down peripheral electric core 11 of battery module.
Similarly, if the internal temperature is higher than the external temperature, a control command (which may include one of L1 and Q4, L2 and Q5, L3 and Q6) may be correspondingly issued according to a specific value of the temperature difference to heat the peripheral cell 11 of the battery module. By adopting the distance and power dividing method, different control instructions can be selected to send decisions according to different conditions, so that the adjusting efficiency of the temperature adjusting unit 10 is higher. In other embodiments of the present embodiment, the distance from the temperature adjustment unit 10 to the battery cell 11 and the adjustment power in the control instruction may have a linear relationship (for example, the closer the temperature adjustment unit 10 is to the battery cell 11, the greater the adjustment power). In other embodiments, the power of the temperature adjustment unit 10 may be unchanged, the distance from the battery cell 11 is changed according to the control instruction, or the distance from the temperature adjustment unit 10 to the battery cell 11 is unchanged, and the adjustment power is changed according to the control instruction.
To sum up, adopt battery module and electric automobile that this application provided, can carry out temperature regulation through the peripheral electric core of temperature regulation unit to battery module to make battery module's inside temperature and outside temperature be located the settlement within range, guaranteed battery module's steady operating condition, prolonged battery module's life.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (8)

1. A battery module is characterized by comprising a temperature adjusting unit, a first temperature sensor, a second temperature sensor, a plurality of battery cells, and a first cover plate and a second cover plate which are used for fixing the battery cells;
the plurality of cells are disposed between the first cover plate and the second cover plate;
the first temperature sensor is arranged at a position among the plurality of battery cells and used for detecting the internal temperature of the battery module;
the second temperature sensor is arranged at the position of a peripheral battery cell in the plurality of battery cells and used for detecting the external temperature of the battery module;
the temperature adjusting unit is arranged at a position corresponding to the second temperature sensor and used for receiving a control instruction generated according to the internal temperature and the external temperature and adjusting the temperature of a peripheral electric core of the battery module according to the control instruction so as to enable the temperature difference between the internal temperature and the external temperature of the battery module to be within a set range;
the temperature adjusting unit comprises a shell, a connecting piece, a heater and a refrigerator;
the shell is connected with the first cover plate and the second cover plate through the connecting piece;
the heater and the refrigerator are arranged inside the shell;
when the temperature difference between the internal temperature and the external temperature exceeds a set range and the external temperature is lower than the internal temperature, the heater receives a heating control instruction, and the heater is used for heating a peripheral electric core of the battery module according to the heating control instruction;
when the temperature difference between the internal temperature and the external temperature exceeds a set range and the external temperature is higher than the internal temperature, the refrigerator receives a cooling control instruction, and the refrigerator is used for cooling the peripheral electric core of the battery module according to the cooling control instruction;
the first cover plate and the second cover plate are respectively provided with a slide way, and the slide way on the first cover plate extends from one side of the first cover plate to the opposite side;
the slide way on the second cover plate extends from one side of the second cover plate to the opposite side;
the connecting piece is respectively connected with the slide ways on the first cover plate and the second cover plate in a sliding mode and used for driving the temperature adjusting unit to move close to or far away from the battery cell according to a control instruction.
2. The battery module according to claim 1, wherein the heater comprises a heating resistor.
3. The battery module according to claim 1, wherein the refrigerator comprises a semiconductor refrigerator.
4. The battery module according to claim 1, wherein the temperature adjusting unit further comprises a lead, and the housing comprises a through-hole;
one end of the lead is respectively connected with the heater and the refrigerator through holes, the other end of the lead is connected with the power supply through a switch, and the switch is used for supplying the electric quantity of the power supply to the heater or the refrigerator according to a control instruction so as to regulate and control the temperature.
5. The battery module according to claim 1, wherein the housing further comprises a radiation protection layer, and the radiation protection layer is coated on an outer surface of the housing and is used for absorbing heat generated by the battery core.
6. The battery module according to claim 5, wherein the radiation protective layer comprises an aluminum foil layer and a polyester olefin layer;
the aluminum foil layer is coated on the outer surface of the shell, and the polyester alkene layer is coated on the surface, far away from the shell, of the aluminum foil layer.
7. An electric vehicle, characterized by comprising a controller and the battery module according to any one of claims 1 to 6, wherein the controller is electrically connected with the battery module;
the first temperature sensor is used for detecting the internal temperature of the battery module and sending the internal temperature to the controller;
the second temperature sensor is used for detecting the external temperature of the battery module and sending the external temperature to the controller;
the controller is used for calculating the temperature difference between the internal temperature and the external temperature according to the received internal temperature and the received external temperature, judging whether the temperature difference is within a set range, and if the temperature difference is not within the set range, sending a control instruction to the temperature adjusting unit;
the temperature adjusting unit is used for receiving the control instruction and adjusting the temperature of the peripheral electric core of the battery module according to the control instruction, so that the temperature difference between the internal temperature and the external temperature of the battery module is within the set range.
8. The electric vehicle according to claim 7, wherein the control command includes a movement position of the temperature adjustment unit and an adjustment power corresponding to the movement position, and the temperature adjustment unit is configured to adjust the temperature of the peripheral electric core of the battery module according to the control command through the following steps:
moving to a movement position contained in the control instruction according to the control instruction;
and adjusting the temperature according to the control instruction by using the adjusting power contained in the control instruction so as to enable the temperature difference between the internal temperature and the external temperature to be within a set range.
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CN111293248B (en) * 2020-02-26 2022-03-29 重庆工业职业技术学院 New energy automobile power battery cooling system and cooling control method
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CN115483416B (en) * 2022-06-30 2023-04-25 华北电力大学 System and method for testing external temperature field of SOFC (solid oxide Fuel cell) stack
CN115360449A (en) * 2022-09-15 2022-11-18 厦门海辰储能科技股份有限公司 Detection tool, temperature checking method and energy storage device

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