CN112490538A - Immersion type liquid cooling battery module with integrated liquid cooling plate and graphite flake - Google Patents

Immersion type liquid cooling battery module with integrated liquid cooling plate and graphite flake Download PDF

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Publication number
CN112490538A
CN112490538A CN202011522378.XA CN202011522378A CN112490538A CN 112490538 A CN112490538 A CN 112490538A CN 202011522378 A CN202011522378 A CN 202011522378A CN 112490538 A CN112490538 A CN 112490538A
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module
battery
liquid
plate
graphite sheet
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Inventor
杨书廷
李垒
李秋洋
华显
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Henan Power Battery Innovation Center Co ltd
Battery Research Institute Of Henan Co ltd
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Henan Power Battery Innovation Center Co ltd
Battery Research Institute Of Henan Co ltd
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Priority to CN202011522378.XA priority Critical patent/CN112490538A/en
Publication of CN112490538A publication Critical patent/CN112490538A/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
    • H01M10/65—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
    • H01M10/6554—Rods or plates
    • 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
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • 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
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • 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
    • H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
    • 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)
  • Battery Mounting, Suspending (AREA)
  • Secondary Cells (AREA)

Abstract

本发明涉及浸泡式液冷电池模组技术领域，特别是涉及一种带有集成液冷板和石墨片的浸泡式液冷电池模组，电池芯体散热效果差，一种带有集成液冷板和石墨片的浸泡式液冷电池模组，包括电池模组本体，电池模组本体包括模组底板、模组外壳、模组内壳、电池和模组盖板，模组外壳内壁贴附第一石墨片，模组内壳与模组盖板、模组外壳与模组底板之间构成浸泡液体通道，模组盖板上设有浸泡液体加注孔和堵头，模组底板包括冷却液通道、循环液进液口和循环液出液口，模组外壳上设置膨胀机构，电池包括多个单体电池，各单体电池外贴附第二石墨片，各单体电池之间贴附隔热毡，使电池芯体快速散热，在浸泡式液冷电池模组技术领域具有良好的发展前景。

Figure 202011522378

The invention relates to the technical field of immersed liquid-cooled battery modules, in particular to an immersed liquid-cooled battery module with an integrated liquid-cooling plate and a graphite sheet, and the battery core body has poor heat dissipation effect. The submerged liquid-cooled battery module of plate and graphite sheet, including the battery module body, the battery module body includes the module bottom plate, the module outer shell, the module inner shell, the battery and the module cover plate, and the inner wall of the module shell is attached The first graphite sheet, the immersion liquid channel is formed between the inner shell of the module and the cover plate of the module, the outer shell of the module and the bottom plate of the module. The liquid channel, the circulating liquid inlet and the circulating liquid outlet, an expansion mechanism is set on the module shell, the battery includes a plurality of single cells, each single cell is attached with a second graphite sheet, and each single cell is pasted between the cells. The thermal insulation felt is attached to quickly dissipate heat from the battery core, and it has a good development prospect in the technical field of immersion liquid-cooled battery modules.

Figure 202011522378

Description

Immersion type liquid cooling battery module with integrated liquid cooling plate and graphite flake
Technical Field
The invention relates to the technical field of immersion type liquid cooling battery modules, in particular to an immersion type liquid cooling battery module with an integrated liquid cooling plate and a graphite sheet.
Background
With the popularization of new energy automobiles, the lithium ion battery industry is rapidly developed. But simultaneously, based on the requirements of the user side on quick charging and long cycle life of the battery, higher requirements are put forward on the uniformity of the temperature field of each battery monomer; meanwhile, the new energy automobile has higher and higher requirements on long endurance mileage, the energy density of the battery is higher and higher, and the requirement on thermal management of the battery is higher and higher; batteries are required to meet adaptability requirements of severe environments, and the requirement for inhibiting thermal runaway of batteries is increasing.
The uniformity of the surface temperature field of the battery is improved, the temperature consistency of battery monomers in the battery module is improved, the surface heat transfer efficiency of the battery monomers is improved, all the battery monomers are in a proper working temperature region, and the method is the key for solving the heat management problem of the high-energy-density battery; the key to solve the problems of long-term operation and local high temperature in high-rate charge and discharge of the battery under severe working conditions is to prevent the battery electrode from being oxidized; when thermal runaway of the battery monomer occurs, the thermal runaway region is physically isolated, even if the thermal runaway of the monomer occurs, heat released by the battery monomer can be absorbed to prevent thermal runaway diffusion, and even if the bulge of the battery monomer cracks, combustion can be prevented, which is the key for solving the problems.
At present, the heat dissipation mode of the battery module mainly comprises natural cooling, air cooling, liquid cooling, direct cooling of a refrigerant and the like. Natural cooling and air cooling are greatly limited by the environment and are not suitable for high-temperature and low-temperature environments. Liquid cooling and refrigerant direct cooling environmental suitability are good, but at present liquid cooling all is that liquid passes through liquid pipeline contact battery bottom or side, carries out the heat exchange through insulating heat conduction rubber and battery indirect contact, and battery core temperature uniformity is poor, and is relatively poor to the suppression effect that battery core thermal runaway takes place and spreads.
Disclosure of Invention
In view of the above situation, the present invention provides an immersion type liquid cooling battery module with an integrated liquid cooling plate and a graphite sheet, which solves the problems of poor heat dissipation effect and poor thermal runaway suppression effect of a battery core.
The technical scheme is that the immersion type liquid-cooled battery module with the integrated liquid-cooled plate and graphite sheets comprises a battery module body, wherein the battery module body comprises a module bottom plate and a liquid-cooled battery module, the liquid-cooled battery module comprises a module outer shell which is hermetically fixed on the module bottom plate, a module inner shell which is sleeved in the module outer shell, a battery which is sleeved in the module inner shell and a module cover plate which is encapsulated at the upper part of the module outer shell, the first graphite sheet is attached to the inner wall of the module outer shell, the graphite sheet evens out the temperature difference of immersion liquid through the self high heat conduction characteristic, an immersion liquid channel which surrounds the outside of the battery is formed between the module inner shell and the module cover plate as well as between the module outer shell and the module bottom plate, an immersion liquid filling hole is arranged on the module cover plate and is plugged through an end cap, and the immersion liquid, the heat exchange with the battery is realized, the soaking liquid is liquid which has good fluidity, good insulation property, good flame retardance and oxidation resistance and can directly soak the battery within the temperature condition range of-60-200 ℃, the module bottom plate comprises a cooling liquid channel, a circulating liquid inlet and a circulating liquid outlet, the cooling liquid flows in the cooling liquid channel to exchange heat with the soaking liquid in the soaking liquid channel, an expansion mechanism is arranged on a module shell, the expansion mechanism is a metal sheet with a deformation structure and is welded and fixed on the module shell, and the metal sheet is absorbed according to the change of the volume of liquid in a cavity at different temperatures, the battery comprises a plurality of single batteries, a second graphite sheet is attached outside each single battery, high-performance heat insulation materials are attached among the single batteries, the temperature uniformity of the single batteries is effectively improved, and the thermal runaway diffusion of the single batteries is effectively inhibited, and a heat insulation felt for heat insulation is attached between the single batteries.
Furthermore, the graphite flakes including the first graphite flake and the second graphite flake are high-toughness artificially synthesized graphite flakes, the graphite flakes have the characteristics of high heat conductivity coefficient, high toughness and soaking liquid resistance, a temperature field consistent with the temperature of the module bottom plate is established through self high heat conductivity characteristics, and the soaking liquid is driven to generate horizontal natural convection, so that the module bottom plate has high heat transfer efficiency in heating and cooling.
Furthermore, the expansion mechanism is formed by punching a thin metal plate with the thickness of 0.15mm-0.5mm through the opening on the end part or the side edge or the top of the module shell by welding.
Still further, the module inner shell includes the curb plate that extends on length direction, the riser that extends on width direction and the battery backup pad of bottom, the battery sets up inside the module inner shell and installs in bottom battery backup pad, the full through-hole of equipartition in curb plate and the battery backup pad for realize fully contacting between soaking liquid and the battery and carry out the heat transfer, set up the long screw mounting hole that extends on vertical direction on the riser respectively, the position that corresponds with the long screw mounting hole on the module bottom plate is equipped with battery fixing thread blind hole respectively, long screw mounting hole and battery fixing thread blind hole department set up long screw and connect fixed battery to the module shell in.
Furthermore, the battery support plate is a support plate with a raised structure on the surface.
Furthermore, the battery is externally provided with an outer shell, the outer surface of the outer shell is provided with an insulating outer shell formed by an insulating layer, and the second graphite sheet is positioned outside the insulating outer shell.
Furthermore, module mounting holes are formed in two ends of the module bottom plate respectively, and external screws are arranged at the module mounting holes to mount the battery module and equipment and fix the module in the battery pack.
Furthermore, a module positive and negative electrode connector and a signal connector are respectively arranged at two ends of the battery module body, positive and negative electrode fastening screws are arranged at the end part of the battery and matched with the positive and negative electrode connectors, positive and negative electrode fastening nuts are arranged on the module inner shell and matched with the signal connector, and the signal connector is used for transmitting signals such as the internal temperature and the internal pressure of the battery.
Further, the coolant passage is a porous passage with a plurality of communicating pore-like structures.
The invention has the technical effects that the soaking liquid is directly soaked and contacted with the battery monomer in the module, the surface heat exchange coefficient of the battery is high, the contact area is large, the effective contact distribution is uniform and reliable, the heat dissipation efficiency is high, the heat dissipation performance is stable and reliable, the surface temperature of the battery under the condition of large-multiplying-power charging and discharging can be effectively reduced, and the probability of occurrence of the service life attenuation problem and the thermal runaway problem of the battery caused by high local temperature of the battery is reduced; the bottom of the module is integrated with a cooling liquid channel bottom plate, heat exchange is carried out between cooling liquid in the cooling liquid channel and soaking liquid, the cooling or heating process of the soaking liquid in the module is completed, and the module is simple in structure and low in cost; the soaking liquid can effectively inhibit the battery electrode from being oxidized under the severe working condition for a long time and causing thermal runaway due to local high temperature; meanwhile, the soaking liquid can effectively inhibit combustion, explosion and thermal runaway transfer diffusion when the thermal runaway occurs; the problem that a battery module is cooled or heated quickly is effectively solved, so that the temperature of the battery is uniform and is kept in a proper working temperature area, the oxidization of a battery electrode is inhibited, the thermal runaway occurrence of a battery core is inhibited, the thermal runaway diffusion is inhibited when the thermal runaway occurs, and the combustion and explosion of the battery core are inhibited.
Drawings
FIG. 1 is a left side view of the assembly structure of the present invention.
FIG. 2 is a right side view of the assembly structure of the present invention.
Fig. 3 is a schematic view of the overall structure of the present invention.
FIG. 4 is a schematic view of the inner housing of the module of the present invention.
FIG. 5 is a schematic side view of the inner housing of the module of the present invention.
Fig. 6 is an enlarged schematic view of the expanded configuration of the present invention.
Fig. 7 is a schematic view of the structure of the first graphite sheet in the housing of the module of the present invention.
Fig. 8 is a schematic view of the battery assembly structure of the present invention.
FIG. 9 is a schematic cross-sectional view of a coolant channel according to the present invention.
In the figure: 1-module cover plate, 2-positive and negative connectors, 3-signal connectors, 4-circulating liquid inlet, 5-circulating liquid outlet, 6-module outer shell, 7-module bottom plate, 8-module inner shell, 9-positive and negative fastening nuts, 10-battery, 11-positive and negative fastening screws, 12-long screws, 13-module mounting hole, 14-battery fixing threaded blind hole, 15-expansion structure, 16-plug, 17-vertical plate, 18-through hole, 19-long screw mounting hole, 20-side plate, 21-battery support plate, 22-first graphite sheet, 23-second graphite sheet, 24-heat insulation felt, 25-information acquisition conductive composite plate and 26-cooling liquid channel.
Detailed Description
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 in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The first embodiment is as follows: as shown in fig. 1 to 9, an immersion type liquid-cooled battery module with integrated liquid-cooled plate and graphite sheet comprises a battery module body, wherein the battery module body comprises a module bottom plate 7 and a liquid-cooled battery module, the liquid-cooled battery module comprises a module outer shell 6 hermetically fixed on the module bottom plate 7, a module inner shell 8 sleeved in the module outer shell 6, a battery 10 sleeved in the module inner shell 8, and a module cover plate 1 packaged on the upper part of the module outer shell 6, the inner wall of the module outer shell 6 is attached with a first graphite sheet 22, the graphite sheet flattens the temperature difference of immersion liquid by the self high heat conduction characteristic, the module inner shell 8, the module cover plate 1, the module outer shell 6 and the module bottom plate 7 form an immersion liquid channel encircling the outside of the battery 10, the module cover plate 1 is provided with an immersion liquid filling hole and is blocked by a plug 16, the battery pack comprises a module bottom plate 7, a module shell 6 and a battery, wherein the module bottom plate 7 comprises a cooling liquid channel 26, a circulating liquid inlet 4 and a circulating liquid outlet 5 inside, the cooling liquid channel 26 is a porous channel with a plurality of communicated pore-shaped structures, cooling liquid flows in the cooling liquid channel to exchange heat with soaking liquid in a soaking liquid channel, the module shell 6 is provided with an expansion mechanism 15, the expansion mechanism 15 is a metal sheet with a deformation structure and is welded and fixed on the module shell 6, and the battery 10 comprises a plurality of single batteries, each attached second graphite flake 23 outside the battery cell, attached high performance thermal insulation material between the battery cell, effectively promote battery cell temperature homogeneity, effectively restrain battery cell thermal runaway diffusion, each attached thermal-insulated felt 24 that is used for thermal-insulated between the battery cell, the graphite flake including first graphite flake and second graphite flake is high tenacity synthetic graphite flake, the graphite flake has high coefficient of thermal conductivity, high toughness, resistant soaking liquid's characteristic, establish the temperature field unanimous with module bottom plate temperature through self high thermal conductivity characteristic, drive soaking liquid takes place the horizontal direction natural convection, make the module bottom plate all have high heat transfer efficiency in heating and cooling, expansion mechanism 15 is formed by module shell 6 at tip or side or top trompil welding punching press 0.15mm-0.5mm thick thin metal sheet.
Example two: on the basis of the first embodiment, the module inner housing 8 includes a side plate 20 extending in the length direction, a vertical plate 7 extending in the width direction, and a battery support plate 21 at the bottom, the battery 10 is disposed inside the module inner housing 8 and mounted on the battery support plate 21 at the bottom, through holes 18 are uniformly distributed on the side plate 20 and the battery support plate 21 for achieving sufficient contact between the soaking liquid and the battery 10 for heat exchange, long screw mounting holes 19 extending in the vertical direction are respectively formed in the vertical plate 17, battery fixing threaded blind holes 14 are respectively formed in positions of the module bottom plate 7 corresponding to the long screw mounting holes 19, long screws 12 are arranged at the positions of the long screw mounting holes 19 and the battery fixing threaded blind holes 14 for connecting and fixing the battery 10 to the module outer housing 6, and the battery support plate 21 is a support plate with a protruding structure on the surface.
In the above embodiment, the battery 10 is externally provided with a case and the outer surface of the case is provided with an insulating case formed of an insulating layer.
In the above embodiment, the two ends of the module bottom plate 7 are respectively provided with the module mounting holes 13, and the module mounting holes 13 are used for mounting the battery module and the equipment by arranging external screws, so as to fix the module to the battery pack.
In the above embodiment, the two ends of the battery module body are respectively provided with the module positive and negative connectors 2 and the signal connector 3, the end of the battery 10 is provided with the positive and negative fastening screws 11 to be matched with the positive and negative connectors 2, the module inner shell 8 is provided with the positive and negative fastening nuts 9 to be matched with the signal connector 3, and the signal connector 3 is used for transmitting signals such as the internal temperature and pressure of the battery.
The invention has the technical effects that the soaking liquid is directly soaked and contacted with the battery monomer in the module, the surface heat exchange coefficient of the battery is high, the contact area is large, the effective contact distribution is uniform and reliable, the heat dissipation efficiency is high, the heat dissipation performance is stable and reliable, the surface temperature of the battery under the condition of large-multiplying-power charging and discharging can be effectively reduced, and the probability of occurrence of the service life attenuation problem and the thermal runaway problem of the battery caused by high local temperature of the battery is reduced; the bottom of the module is integrated with a cooling liquid channel bottom plate, heat exchange is carried out between cooling liquid in the cooling liquid channel and soaking liquid, the cooling or heating process of the soaking liquid in the module is completed, and the module is simple in structure and low in cost; the soaking liquid can effectively inhibit the battery electrode from being oxidized under the severe working condition for a long time and causing thermal runaway due to local high temperature; meanwhile, the soaking liquid can effectively inhibit combustion, explosion and thermal runaway transfer diffusion when the thermal runaway occurs; the problem that a battery module is cooled or heated quickly is effectively solved, so that the temperature of the battery is uniform and is kept in a proper working temperature area, the oxidization of a battery electrode is inhibited, the thermal runaway occurrence of a battery core is inhibited, the thermal runaway diffusion is inhibited when the thermal runaway occurs, and the combustion and explosion of the battery core are inhibited.
The present invention has been described in detail with reference to the specific embodiments and examples, but these are not intended to limit the present invention. Many variations and modifications may be made by one of ordinary skill in the art without departing from the principles of the present invention, which should also be considered as within the scope of the present invention.

Claims (8)

1.一种带有集成液冷板和石墨片的浸泡式液冷电池模组，包括电池模组本体，其特征在于，所述电池模组本体包括模组底板（7）和液冷电池模组，所述液冷电池模组包括密封固定于模组底板（7）上的模组外壳（6）、套设安装于模组外壳（6）内的模组内壳（8）、套设安装于模组内壳（8）内的电池（10）和封装于模组外壳（6）上部的模组盖板（1），所述模组外壳（6）内壁贴附第一石墨片（22），所述模组内壳（8）与模组盖板（1）、模组外壳（6）与模组底板（7）之间为环绕在电池（10）外部的浸泡液体通道，所述模组盖板（1）上设有浸泡液体加注孔并通过设置堵头（16）进行封堵，所述模组底板（7）包括内部的冷却液通道（22）、循环液进液口（4）和循环液出液口（5），所述模组外壳（6）上设置膨胀机构（15），所述电池（10）包括多个单体电池，各所述单体电池外贴附第二石墨片（23），各所述单体电池之间贴附隔热毡（24）。1. An immersed liquid-cooled battery module with an integrated liquid-cooling plate and a graphite sheet, comprising a battery module body, characterized in that the battery module body comprises a module base plate (7) and a liquid-cooled battery module. The liquid-cooled battery module comprises a module outer shell (6) sealed and fixed on the module base plate (7), a module inner shell (8) sleeved and installed in the module outer shell (6), and sleeved The battery (10) installed in the module inner casing (8) and the module cover plate (1) encapsulated in the upper part of the module casing (6), the inner wall of the module casing (6) is attached with a first graphite sheet ( 22), between the module inner shell (8) and the module cover plate (1), the module outer shell (6) and the module bottom plate (7) is a soaking liquid channel surrounding the outside of the battery (10), so The module cover plate (1) is provided with an immersion liquid filling hole and is blocked by setting a plug (16), and the module bottom plate (7) includes an internal cooling liquid channel (22), a circulating liquid inlet A port (4) and a circulating liquid outlet (5), an expansion mechanism (15) is provided on the module casing (6), and the battery (10) includes a plurality of single cells, each of which is external to the single cell. A second graphite sheet (23) is attached, and a heat insulating felt (24) is attached between the single cells. 2.根据权利要求1所述的一种带有集成液冷板和石墨片的浸泡式液冷电池模组，其特征在于，所述膨胀机构（15）由模组外壳（6）在端部或侧边或顶部开孔焊接带有变形结构的冲压薄板形成，所述冲压薄板的厚度在0.15mm-0.5mm之间。2. An immersion liquid-cooled battery module with an integrated liquid-cooling plate and a graphite sheet according to claim 1, wherein the expansion mechanism (15) is formed by the module casing (6) at the end It is formed by welding a punched sheet with a deformed structure on the side or top of the hole, and the thickness of the punched sheet is between 0.15mm-0.5mm. 3.根据权利要求1或2所述的一种带有集成液冷板和石墨片的浸泡式液冷电池模组，其特征在于，所述模组内壳（8）包括在长度方向上延伸的侧板（20）、在宽度方向上延伸的立板（7）和底部的电池支撑板（21），所述电池（10）设置于模组内壳（8）内部且安装于底部电池支撑板（21）上，所述侧板（20）和电池支撑板（21）上均布满通孔（18），所述立板（17）上分别设置在竖直方向上延伸的长螺钉安装孔（19），所述模组底板（7）上与长螺钉安装孔（19）相对应的位置分别设有电池固定螺纹盲孔（14），所述长螺钉安装孔（19）与电池固定螺纹盲孔（14）处设置长螺钉（12）连接固定电池（10）至模组外壳（6）内。3. An immersion type liquid-cooled battery module with an integrated liquid-cooling plate and a graphite sheet according to claim 1 or 2, wherein the inner shell (8) of the module comprises a lengthwise extension The side plate (20), the vertical plate (7) extending in the width direction and the battery support plate (21) at the bottom, the battery (10) is arranged inside the module inner shell (8) and installed on the bottom battery support On the plate (21), the side plate (20) and the battery support plate (21) are covered with through holes (18), and the vertical plate (17) is respectively provided with long screws extending in the vertical direction for installation Holes (19), the positions corresponding to the long screw mounting holes (19) on the module base plate (7) are respectively provided with battery fixing thread blind holes (14), and the long screw mounting holes (19) are fixed with the battery. A long screw (12) is arranged at the threaded blind hole (14) to connect and fix the battery (10) into the module housing (6). 4.根据权利要求3所述的一种带有集成液冷板和石墨片的浸泡式液冷电池模组，其特征在于，所述电池支撑板（21）为表面带有凸起结构的支撑板。4. An immersion liquid-cooled battery module with an integrated liquid-cooling plate and a graphite sheet according to claim 3, wherein the battery support plate (21) is a support with a raised structure on the surface plate. 5.根据权利要求1所述的一种带有集成液冷板和石墨片的浸泡式液冷电池模组，其特征在于，所述电池（10）外部设有外壳且外壳的外表面设有绝缘层形成的绝缘外壳。5. An immersed liquid-cooled battery module with an integrated liquid-cooling plate and a graphite sheet according to claim 1, wherein the battery (10) is provided with a casing outside and the outer surface of the casing is provided with a casing. An insulating shell formed by an insulating layer. 6.根据权利要求1所述的一种带有集成液冷板和石墨片的浸泡式液冷电池模组，其特征在于，所述模组底板（7）的两端分别设置模组安装孔（13）。6 . An immersed liquid-cooled battery module with an integrated liquid-cooling plate and a graphite sheet according to claim 1 , wherein module mounting holes are respectively provided at both ends of the module base plate ( 7 ). 7 . (13). 7.根据权利要求1所述的一种带有集成液冷板和石墨片的浸泡式液冷电池模组，其特征在于，所述电池模组本体两端分别设有模组正负极接插件（2）和信号接插件（3），所述电池（10）端部设置正负极紧固螺钉（11）与正负极接插件（2）配合，所述模组内壳（8）上设置正负极紧固螺母（9）与信号接插件（3）配合，所述电池（10）上方设置信息采集导电复合板（25）。7. The immersed liquid-cooled battery module with an integrated liquid-cooling plate and a graphite sheet according to claim 1, characterized in that, both ends of the battery module body are respectively provided with positive and negative terminals of the module. A plug-in (2) and a signal connector (3), the battery (10) ends are provided with positive and negative electrode fastening screws (11) to cooperate with the positive and negative electrode connectors (2), the module inner shell (8) A positive and negative electrode fastening nut (9) is arranged on the upper part to cooperate with the signal connector (3), and an information collection conductive composite plate (25) is arranged above the battery (10). 8.根据权利要求1所述的一种带有集成液冷板和石墨片的浸泡式液冷电池模组，其特征在于，所述冷却液通道（26）为带有多个连通孔状结构的多孔通道。8 . The immersion type liquid-cooled battery module with integrated liquid-cooling plate and graphite sheet according to claim 1 , wherein the cooling liquid channel ( 26 ) has a plurality of communicating hole-like structures. 9 . porous channels.
CN202011522378.XA 2020-12-22 2020-12-22 Immersion type liquid cooling battery module with integrated liquid cooling plate and graphite flake Pending CN112490538A (en)

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