CN112467251A - Constant-temperature high-power battery module - Google Patents

Constant-temperature high-power battery module Download PDF

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Publication number
CN112467251A
CN112467251A CN202011413755.6A CN202011413755A CN112467251A CN 112467251 A CN112467251 A CN 112467251A CN 202011413755 A CN202011413755 A CN 202011413755A CN 112467251 A CN112467251 A CN 112467251A
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China
Prior art keywords
module
temperature
fixedly connected
phase change
battery pack
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Pending
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CN202011413755.6A
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Chinese (zh)
Inventor
吴吉强
胥庆
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Hunan Dianjiangjun New Energy Co ltd
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Hunan Dianjiangjun New Energy Co ltd
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Priority to CN202011413755.6A priority Critical patent/CN112467251A/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
    • H01M10/637—Control systems characterised by the use of reversible temperature-sensitive devices, e.g. NTC, PTC or bimetal devices; characterised by control of the internal current flowing through the cells, e.g. by switching
    • 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
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/643—Cylindrical cells
    • 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
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • 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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • 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
    • H01M10/659—Means for temperature control structurally associated with the cells by heat storage or buffering, e.g. heat capacity or liquid-solid phase changes or transition
    • 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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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Secondary Cells (AREA)

Abstract

The specification discloses a constant-temperature high-power battery module, which comprises a module bottom box, wherein the bottom of an inner cavity of the module bottom box is fixedly connected with a heat-conducting silica gel sheet, the top of the heat-conducting silica gel sheet is fixedly connected with an aluminum sheet, the top of the aluminum sheet is fixedly connected with a bottom battery pack bracket, the inner cavity of the bottom battery pack bracket is provided with a fixing groove, a loading plate is arranged inside the fixing groove, the middle part of the loading plate is provided with a through groove, the inner cavity of the bottom fixing groove is provided with a battery pack, the top of the battery pack is fixedly connected with a top battery pack bracket, the top of the top battery pack bracket is fixedly connected with an aluminum sheet, the top of the aluminum sheet is fixedly connected with a PC sheet, a PTC heating module is arranged between the battery packs, the outer ring of the module bottom box is fixedly connected, the cooperation through above-mentioned structure is used and can be realized the automatic constant temperature of battery module, prolongs battery module's life.

Description

Constant-temperature high-power battery module
Technical Field
The description relates to the technical field of constant temperature of battery modules, in particular to a constant-temperature high-power battery module.
Background
At present, motor vehicle transportation becomes a main tool for people to transport materials in a long distance, short-distance material transportation and people's transportation are completed through an electric vehicle, and no matter the motor vehicle or the electric vehicle is provided with a battery module to supply power to instruments and meters on the vehicle, so as to provide power for the electric vehicle, however, when the heat distribution condition of each battery cell of the battery module in the working process is not uniform, the inconsistency of the battery module aggravating the single battery cells in the using process is caused, so that the overall performance of the battery module is reduced sharply; when the battery module is in work in the sharply cold region, the whole working performance of the battery core can also be sharply reduced. In order to keep a high performance of a battery module regardless of whether the battery module normally operates in a high temperature environment or a low temperature environment, it is necessary to provide a constant temperature high power battery module.
Description of the invention
The purpose of the present description is to provide a constant-temperature high-power battery module, so as to solve the problem that when the thermal distribution of each cell of the battery module in operation is not uniform, the inconsistency of the single cells is aggravated in the use process of the battery module, which is proposed in the above background art, so that the overall performance of the battery module is reduced sharply; when the battery module is in the work of sharp chilly area, the whole working property of electricity core also can sharply reduce to and the battery module can't reach and last constant temperature's problem.
In order to achieve the above purpose, the present specification provides the following technical solutions: a constant-temperature high-power battery module comprises a module bottom box, wherein the bottom of the inner cavity of the module bottom box is fixedly connected with a heat-conducting silica gel sheet, the top of the heat-conducting silica gel sheet is fixedly connected with an aluminum sheet, the top of the aluminum sheet is fixedly connected with a bottom battery pack bracket, the inner cavity of the bottom battery pack bracket is provided with a fixing groove, a loading plate is arranged in the fixing groove, the middle part of the loading plate is provided with a through groove, the inner cavity of the bottom fixing groove is provided with a battery pack, the top of the battery pack is fixedly connected with a top battery pack bracket, the top of the top battery pack bracket is fixedly connected with an aluminum sheet, the top of the upper aluminum sheet is fixedly connected with a PC sheet, a PTC heating module is arranged between the battery packs, the outer lane fixedly connected with phase transition module of box at the bottom of the module, the inner wall fixedly connected with constant temperature control module of box at the bottom of the module.
Preferably, a data receiver is arranged on the left side of the inner cavity of the constant temperature control module, a central processing unit is fixedly connected to the middle of the inner cavity of the constant temperature control module, and a temperature sensor is fixedly connected to the outer wall of the constant temperature control module.
Preferably, screw holes are formed in four corners of the top of the module bottom box, a clamping groove is formed in the middle of the edge of the module bottom box, a top cover is arranged above the module bottom box, a clamping block is fixedly connected to the middle of the edge of the bottom of the top cover, and screws are arranged at four corners of the top cover.
Preferably, the top cover is clamped in the inner cavity of the clamping groove through a clamping block and is fixed to the top of the module bottom box through screws at four corners.
Preferably, the PTC heating module is composed of a galvanized outer pressing plate, a stainless steel corrugated spring piece, a galvanized inner pressing plate, a single-layer aluminum heat dissipation piece, a PTC heating piece, a double-layer aluminum heat dissipation piece, a nickel-plated copper electrode terminal and a PPS high-temperature plastic electrode sheath, the PTC heating module transmits heat emitted by the PTC element to a heated object through a multi-layer heat transmission structure such as an electrode plate insulation layer and a heat conduction and heat storage plate which are arranged on the surface of the PTC heating element, the PTC thermistor is heated up by self-heating after being electrified to enable the resistance value to enter a transition region, the surface temperature of the PTC thermistor is heated at a constant value at a constant temperature which is only related to the Curie temperature and the applied voltage of the PTC thermistor and is basically unrelated to the environmental temperature, and the PTC heating module adopts the U-shaped corrugated heat dissipation piece, so that the heat dissipation rate is improved, the advantages of adhesion and mechanical are integrated, and various heat, the electric phenomenon has strong binding force, excellent heat conduction and heat dissipation performance, high efficiency, safety and reliability.
Preferably, the phase change module changes the phase of the phase change material in the phase change module from a solid state to a liquid state when the temperature of the battery pack is higher than 28 ℃, the phase change material absorbs and stores a large amount of latent heat during melting, the temperature in the box body is reduced, the phase change material stops its phase change when the temperature of the battery pack is lower than 22 ℃, the phase change material in the phase change module is cooled from the liquid state to the solid state when the temperature of the battery pack is lower than 20 ℃, the phase change material is emitted to the environment during cooling, the reverse phase change from the liquid state to the solid state is carried out, the temperature in the box body is correspondingly increased, and the phase change material stops its phase change when the temperature in the box body is higher than 26 ℃.
Preferably, the PC sheet is a lens made of polycarbonate, has a specific gravity of only 2 g per cubic centimeter, and greatly reduces the weight of the lens due to a high refractive index and a low specific gravity.
Preferably, the inner wall of the phase change module is connected with the heat-conducting silica gel sheet through heat-conducting resin.
Compared with the prior art, the beneficial effects of the description are that:
1. the constant-temperature high-power battery module comprises a PTC heating module 9, a single-layer aluminum heat dissipation element, a PTC heating element, a double-layer aluminum heat dissipation element, a nickel-plated copper electrode terminal and a PPS high-temperature plastic electrode sheath, wherein the PTC heating module 9 is composed of a galvanized outer pressing plate, a stainless steel corrugated spring sheet, a galvanized inner pressing plate, a single-layer aluminum heat dissipation element, a PTC heating sheet, a double-layer aluminum heat dissipation element, a nickel-plated copper electrode terminal and a PPS high-temperature plastic electrode sheath, the PTC heating module 9 transfers heat emitted by the PTC element to a heated object through a multi-layer heat transfer structure such as a plate electrode insulation layer and a heat conduction and storage plate which are arranged on the surface of the PTC heating element, the PTC thermistor is heated up by self-heating after being powered up, so that resistance value enters a transition area, the surface temperature of the constant-temperature PTC thermistor is only related to the Curie, the PTC heating element fully considers various thermal and electric phenomena during working, and has the advantages of strong binding force, excellent heat conduction and heat dissipation performance, high efficiency, safety and reliability.
2. This constant temperature high power battery module, phase change module 10 is being higher than 28 degrees when group battery 5 temperature, phase change material in phase change module 10 is from solid state to liquid phase transition, the in-process of melting, phase change material absorbs and stores a large amount of latent heats, make the temperature in the box descend simultaneously, be less than 22 degrees when group battery 5 temperature, phase change material will stop its phase transition, be less than 20 degrees when the temperature in the storehouse, phase change material in phase change module 10 will be cooled off to the solid state by the liquid state, in the in-process of cooling, phase change material temperature will distribute to the environment, carry out the reverse phase transition from liquid state to solid state, the corresponding improvement of temperature in the box simultaneously, it makes when the temperature in the box is higher than 26 degrees, phase change material will stop its phase transition, and then realize the automatic constant temperature of battery module, the life of extension battery module.
3. The top cover of the constant-temperature high-power battery module is clamped in the inner cavity of the clamping groove through the clamping block, and is fixed at the top of the module bottom box through the screws at four corners, so that the constant-temperature high-power battery module is convenient to disassemble and assemble
Drawings
FIG. 1 is a schematic view of the overall disassembled structure of the present disclosure;
FIG. 2 is a schematic view of the overall structure of the present description;
FIG. 3 is a schematic view of the structure of the battery support according to the present description;
FIG. 4 is a schematic diagram illustrating a thermostatic control module according to the present invention.
In the figure: 1. a module bottom box; 101. a screw hole; 102. a card slot; 2. a heat-conducting silica gel sheet; 3. aluminum sheets; 4. a battery pack support; 401. fixing grooves; 402. a loading plate; 403. a through groove; 5. a battery pack; 6. a top battery pack support; 7. aluminum sheets are coated; 8. a PC sheet; 9. a PTC heating module; 10. a phase change module; 11. a constant temperature control module; 111. a data receiver; 112. a central processing unit; 113. a temperature sensor; 12. a top cover; 121. a clamping block; 122. and (4) screws.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
Referring to fig. 1-4, a constant-temperature high-power battery module includes a module bottom case 1, a screw hole 101, a clamping groove 102, a heat-conducting silica gel sheet 2, an aluminum sheet 3, a battery pack bracket 4, a fixing groove 401, a loading plate 402, a through groove 403, a battery pack 5, a top battery pack bracket 6, an upper aluminum sheet 7, a PC sheet 8, a PTC heating module 9, a phase change module 10, a constant-temperature control module 11, a data receiver 111, a central processing unit 112, a temperature sensor 113, a top cover 12, a clamping block 121, and a screw 122.
The initial positions and the connection relations of the structures are as follows:
bottom fixedly connected with heat conduction silica gel piece 2 of box 1 inner chamber at the bottom of the module, the top fixedly connected with aluminum sheet 3 of heat conduction silica gel piece 2, aluminum sheet 3's top fixedly connected with bottom group battery support 4, fixed slot 401 has been seted up to the inner chamber of bottom group battery support 4, the inside of fixed slot 401 is provided with the loading board 402, the middle part of loading board 402 has been seted up and has been run through groove 403, the inner chamber of bottom fixed slot 401 is provided with group battery 5, the top fixedly connected with top group battery support 6 of group battery 5, aluminum sheet 7 is gone up to the top fixedly connected with of top group battery support 6, the top fixedly connected with PC piece 8 of going up aluminum sheet 7, be provided with PTC heating module 9 between the group battery 5, the outer lane fixedly connected with phase transition module 10 of box 1 at the bottom of the module.
The left side of the inner cavity of the further constant temperature control module 11 is provided with a data receiver 111, the middle part of the inner cavity of the constant temperature control module 11 is fixedly connected with a central processing unit 112, and the outer wall of the constant temperature control module 11 is fixedly connected with a temperature sensor 113.
Further, screw holes 101 have been seted up at the four corners at box 1 top at the bottom of the module, draw-in groove 102 has been seted up at the middle part at box 1 edge at the bottom of the module, and the top of box 1 at the bottom of the module is provided with top cap 12, and top cap 12 bottom edge's middle part fixedly connected with fixture block 121, top cap 12's four corners are provided with screw 122.
Further, the top cover 12 is clamped in the inner cavity of the clamping groove 102 through a clamping block 121, and is fixed on the top of the module bottom case 1 through screws 122 at four corners.
Further, the PTC heating module 9 is composed of a galvanized outer plate, a stainless steel corrugated spring sheet, a galvanized inner pressing plate, a single-layer aluminum heat dissipation member, a PTC heating sheet, a double-layer aluminum heat dissipation member, a nickel-plated copper electrode terminal and a PPS high-temperature plastic electrode sheath, the PTC heating module 9 transfers the heat generated by the PTC element to the object to be heated through a multi-layer heat transfer structure such as an electrode plate insulation layer and a heat conduction heat storage plate which are arranged on the surface of the PTC heating element, the PTC thermistor heats up by self-heating after being powered up to enable the resistance value to enter a transition region, the surface temperature of the PTC thermistor is heated at a constant temperature which is only related to the Curie temperature and the applied voltage of the PTC thermistor and is basically unrelated to the environmental temperature, and the PTC heating module 9 adopts a U-shaped corrugated heat dissipation sheet, thereby improving the heat dissipation rate, integrating the advantages of adhesion and mechanical types, and fully considering various heat generated when the PTC, The electric phenomenon has strong binding force, excellent heat conduction and heat dissipation performance, high efficiency, safety and reliability.
Further, when the temperature of the battery pack 5 is higher than 28 ℃, the phase change material in the phase change module 10 changes phase from solid to liquid, and in the process of melting, the phase change material absorbs and stores a large amount of latent heat, and simultaneously, the temperature in the box body is reduced, and when the temperature of the battery pack 5 is lower than 22 ℃, the phase change material stops its phase change, and when the temperature in the cabin is lower than 20 ℃, the phase change material in the phase change module 10 is cooled from liquid to solid, and in the process of cooling, the temperature of the phase change material is required to be dissipated to the environment, reverse phase change from liquid to solid is carried out, and simultaneously, the temperature in the box body is correspondingly increased, and when the temperature in the box body is higher than 26 ℃, the phase change material stops its phase change, so that the battery module can automatically keep constant temperature, and the service life of the battery module.
Further, the PC sheet 8 is a lens made of polycarbonate, has a specific gravity of only 2 g per cubic centimeter, and greatly reduces the weight of the lens due to a high refractive index and a low specific gravity.
Further, the inner wall of the phase change module 10 is connected with the heat conductive silicone sheet 2 through heat conductive resin.
The working principle is as follows: the bottom of the battery pack 5 is provided with an aluminum sheet 3, the bottom of the aluminum sheet is provided with a heat-conducting silica gel sheet 2, the inner wall of a phase change module 10 is connected with the heat-conducting silica gel sheet 2 through heat-conducting resin, the heat which is not easy to dissipate from the bottom of the battery pack 5 is conducted to the phase change module 10 through the heat-conducting silica gel sheet 2, the phase change module 10 changes the phase of a phase change material in the phase change module 10 from a solid state to a liquid state when the temperature of the battery pack 5 is higher than 28 ℃, the phase change material absorbs and stores a large amount of latent heat in the melting process, the temperature in the box body is reduced, the phase change material stops its phase change when the temperature of the battery pack 5 is lower than 22 ℃, the phase change material in the phase change module 10 is cooled from the liquid state to the solid state when the temperature in the bin is lower than 20 ℃, the temperature in the cooling process is dissipated, when the temperature in the box body is higher than 26 ℃, the phase change material stops the phase change of the phase change material, thereby realizing the automatic constant temperature of the battery module and prolonging the service life of the battery module, the inner wall of the module bottom box 1 is fixedly connected with a constant temperature control module 11, the left side of the inner cavity of the constant temperature control module 11 is provided with a data receiver 111, the middle part of the inner cavity of the constant temperature control module 11 is fixedly connected with a central processor 112, the outer wall of the constant temperature control module 11 is fixedly connected with a temperature sensor 113, the temperature sensor 113 can collect and upload the temperature of the battery pack 5 in real time, when the heat storage amount of the phase change module 10 is not enough to improve the temperature of the battery pack 5 to keep the constant temperature, the central processor 112 controls the circuit to start to control the PTC heating module 9 to heat the battery pack 5, and the PTC heating module 9 is composed of a galvanized, The PTC heating module 9 transmits heat emitted by the PTC element to a heated object through a multilayer heat transfer structure such as an electrode plate insulating layer, a heat conduction and heat storage plate and the like arranged on the surface of the PTC heating element, the PTC thermistor heats up by self-heating to enable the resistance value to enter a jump zone after being electrified, the surface temperature of the PTC thermistor is heated at constant temperature and is only related to the Curie temperature and the applied voltage of the PTC thermistor and is basically unrelated to the environmental temperature, and the PTC heating module 9 adopts the U-shaped corrugated radiating fin, so that the heat dissipation rate is improved, the advantages of adhesion and mechanical type are integrated, various thermal and electrical phenomena of the PTC heating element during working are fully considered, the bonding force is strong, the heat conduction and radiating performance are excellent, and the efficiency is high, is safe and reliable.
Although the embodiments of the present description have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations may be made in these embodiments without departing from the principles and spirit of the description, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides a constant temperature high power battery module, box (1) at the bottom of the module, its characterized in that: the bottom of the inner cavity of the module bottom box (1) is fixedly connected with a heat-conducting silica gel sheet (2), the top of the heat-conducting silica gel sheet (2) is fixedly connected with an aluminum sheet (3), the top of the aluminum sheet (3) is fixedly connected with a bottom battery pack support (4), the inner cavity of the bottom battery pack support (4) is provided with a fixing groove (401), a loading plate (402) is arranged inside the fixing groove (401), the middle part of the loading plate (402) is provided with a through groove (403), the inner cavity of the bottom fixing groove (401) is provided with a battery pack (5), the top of the battery pack (5) is fixedly connected with a top battery pack support (6), the top of the top battery pack support (6) is fixedly connected with an upper aluminum sheet (7), the top of the upper aluminum sheet (7) is fixedly connected with a PC sheet (8), and a PTC heating module (, the outer ring of the module bottom box (1) is fixedly connected with a phase change module (10), and the inner wall of the module bottom box (1) is fixedly connected with a constant temperature control module (11).
2. The constant-temperature high-power battery module according to claim 1, characterized in that: the left side of thermostatic control module (11) inner chamber is provided with data receiver (111), the middle part fixedly connected with central processing unit (112) of thermostatic control module (11) inner chamber, the outer wall fixedly connected with temperature sensor (113) of thermostatic control module (11).
3. The constant-temperature high-power battery module according to claim 1, characterized in that: screw holes (101) have been seted up at the four corners at box (1) top at the bottom of the module, draw-in groove (102) have been seted up at the middle part at box (1) edge at the bottom of the module, the top of box (1) at the bottom of the module is provided with top cap (12), middle part fixedly connected with fixture block (121) at top cap (12) bottom edge, the four corners of top cap (12) are provided with screw (122).
4. The constant-temperature high-power battery module according to claim 3, characterized in that: the top cover (12) is clamped in the inner cavity of the clamping groove (102) through a clamping block (121) and is fixed to the top of the module bottom box (1) through screws (122) at four corners.
5. The constant-temperature high-power battery module according to claim 1, characterized in that: the PTC heating module (9) is composed of a galvanized outer pressing plate, a stainless steel corrugated spring piece, a galvanized inner pressing plate, a single-layer aluminum heat dissipation piece, a PTC heating piece, a double-layer aluminum heat dissipation piece, a nickel-plated copper electrode terminal and a PPS high-temperature plastic electrode sheath.
6. The constant-temperature high-power battery module according to claim 1, characterized in that: the phase change module (10) is characterized in that when the temperature of the battery pack (5) is higher than 28 ℃, the phase change material in the phase change module (10) changes phase from a solid state to a liquid state, the phase change material absorbs and stores a large amount of latent heat in the melting process, meanwhile, the temperature in the box body is reduced, when the temperature of the battery pack (5) is lower than 22 ℃, the phase change material stops the phase change, when the temperature of the battery pack (5) is lower than 20 ℃, the phase change material in the phase change module (10) is cooled from the liquid state to the solid state, in the cooling process, the temperature of the phase change material is emitted to the environment, the reverse phase change from the liquid state to the solid state is carried out, meanwhile, the temperature in the box body is correspondingly increased, and when the temperature in the box body is higher than 26 ℃.
7. The constant-temperature high-power battery module according to claim 1, characterized in that: the PC sheet (8) is a lens made of polycarbonate, has a specific gravity of only 2 g per cubic centimeter, and greatly reduces the weight of the lens due to high refractive index and light specific gravity.
8. The constant-temperature high-power battery module according to claim 1, characterized in that: the inner wall of the phase change module (10) is connected with the heat conduction silica gel sheet (2) through heat conduction resin.
CN202011413755.6A 2020-12-03 2020-12-03 Constant-temperature high-power battery module Pending CN112467251A (en)

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Application publication date: 20210309