CN116454451A - Flat heat pipe type power battery system for vehicle and electric automobile - Google Patents

Flat heat pipe type power battery system for vehicle and electric automobile Download PDF

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Publication number
CN116454451A
CN116454451A CN202310204916.8A CN202310204916A CN116454451A CN 116454451 A CN116454451 A CN 116454451A CN 202310204916 A CN202310204916 A CN 202310204916A CN 116454451 A CN116454451 A CN 116454451A
Authority
CN
China
Prior art keywords
heat pipe
flat
battery
battery module
power battery
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310204916.8A
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Chinese (zh)
Inventor
张扬军
王悦齐
李炜烽
王新虎
冯科
连红奎
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.)
Tsinghua University
Original Assignee
Tsinghua University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tsinghua University filed Critical Tsinghua University
Priority to CN202310204916.8A priority Critical patent/CN116454451A/en
Publication of CN116454451A publication Critical patent/CN116454451A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • H01M10/62—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
    • H01M10/655—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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6552—Closed pipes transferring heat by thermal conductivity or phase transition, e.g. heat pipes
    • 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
    • H01M10/6561—Gases
    • H01M10/6563—Gases with forced flow, e.g. by blowers
    • 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
    • H01M10/6569—Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
    • 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

Abstract

The utility model provides a dull and stereotyped hot pipe type power battery system and electric automobile for vehicle, wherein power battery system includes battery module, cooling system, the battery module includes a plurality of electric core group, every electric core group includes a plurality of electric cores, cooling system includes dull and stereotyped heat pipe, radiating fin, a plurality of radiator fan, the battery module is connected to dull and stereotyped heat pipe, radiating fin is connected to dull and stereotyped heat pipe, a plurality of radiator fan set up to near the radiating fin for to radiating fin, dull and stereotyped heat pipe includes casing, capillary core, steam chamber, the inside packing heat exchange medium of dull and stereotyped heat pipe, the inboard of casing is close to battery module's position sets up the capillary core, the inboard of casing is kept away from battery module's part forms the steam chamber, heat exchange medium can carry out gas-liquid conversion in capillary core with the steam chamber.

Description

Flat heat pipe type power battery system for vehicle and electric automobile
Technical Field
The application relates to the technical field of new energy automobiles, and in particular relates to a flat heat pipe type power battery system for a vehicle and an electric automobile.
Background
The power battery is used as a main power source of the electric automobile, and the power output characteristic and the working temperature of the battery core in the power battery system have important influence on the performance and the safety of the electric automobile. The power battery system can work and run in a proper temperature range by reasonably integrating components such as an electric core, an electric control system and a battery management system of the power battery system, and thermal runaway can be effectively prevented. Meanwhile, the temperature states of the battery cells are guaranteed to be consistent, and the short-circuit effect which restricts the service life of the battery system can be effectively solved.
At present, a cooling system of an electric automobile power battery system mainly adopts an air cooling or liquid cooling mode. Along with the continuous improvement of the requirements of the new energy electric automobile on the rapid charging and acceleration performance, the charging and discharging multiplying power of the battery is improved, and the corresponding heat generation amount is rapidly increased, so that the temperature rise of the battery is obviously improved. The temperature difference between the cells increases due to the inconsistent heat dissipation. This places greater demands on the battery thermal management system that is required to maintain the temperature of the power battery system in a suitable temperature range.
Patent CN215644808U provides a power battery system structure, which comprises a case body and a case cover, wherein the case body is arranged in a convex shape. The bottom part of the box body is divided into seven spaces through a plurality of brackets, the first space on the left side is fixedly provided with a high-pressure box, and the rest space is provided with a module. Each space is provided with two side-by-side modules, the bottom of each module is provided with a liquid cooling system, and each liquid cooling system comprises a liquid cooling plate and a pipeline. The liquid cooling plate is made by stamping technology, and the pipeline is a corrugated pipeline and is connected in a quick-plug way. The utility model ensures that each component in the battery pack is fixed and reliable, has a feasible process, improves the mechanical performance of a battery system and improves the safety performance of the battery pack.
The power battery system provided by the above patent still adopts a traditional liquid-cooled cooling system, and the cooling efficiency and the temperature uniformity of the cooling system are difficult to meet the requirement of high-power charge and discharge. And the utility model patent does not describe or improve structural details of the battery system such as relays, sensors, fuses, etc.
Disclosure of Invention
The present application has been made in view of the state of the art described above. The utility model provides an aim at provides a dull and stereotyped hot pipe type power battery system for vehicle, this power battery system adopts hot pipe type cooling structure, and this cooling structure is based on heat pipe phase transition heat dissipation, can realize the high-efficient heat dissipation to power battery system.
Embodiments of the present application provide a flat heat pipe type power battery system for a vehicle, which includes a battery module, a cooling system,
the battery module comprises a plurality of battery cell groups, each battery cell group comprises a plurality of battery cells, the cooling system comprises a flat heat pipe, a radiating fin and a plurality of radiating fans,
the battery module is connected to the flat heat pipe, the heat dissipation fins are connected to the flat heat pipe,
the plurality of heat dissipation fans are arranged near the heat dissipation fins and used for dissipating heat of the heat dissipation fins,
the flat heat pipe comprises a shell, a capillary core and a steam cavity, the interior of the flat heat pipe is filled with heat exchange working medium,
the inner side of the shell is close to the position of the battery module, the capillary core is arranged, the part, away from the battery module, of the inner side of the shell forms the steam cavity, and the heat exchange working medium can be subjected to gas-liquid conversion in the capillary core and the steam cavity.
In at least one possible embodiment, the power cell system further comprises a battery management system connected to the battery module, the battery management system comprising a manual service switch, a plurality of voltage-temperature acquisition boards, a quick-charge connector, a positive and negative connector, a plurality of fuses.
In at least one possible embodiment, the power battery system further includes a battery system housing disposed outside the battery module and the cooling system,
the cooling system may further comprise a baffle plate,
the baffle is arranged between the battery module and the radiating fins and the radiating fan,
the battery system case is formed with a filter screen in the vicinity of the heat radiation fan.
In at least one possible embodiment, the flat plate heat pipe further comprises a plurality of support posts,
two ends of the plurality of support columns are respectively connected to the shell.
In at least one possible embodiment, the support column further forms one or more positioning holes to connect the battery module to the flat heat pipe.
In at least one possible embodiment, the height of the cell stack is H,
the height H of the radiating fins is 0.8H to 1H, and the diameter R of the radiating fan is 0.8H to 1H.
In at least one possible embodiment, the length of the flat heat pipe is L, the length direction of the heat radiating fin is identical to the width direction of the flat heat pipe,
the width B of the radiating fin extending along the length direction of the flat plate heat pipe is 0.1L to 0.2L.
In at least one possible embodiment, the heat exchange medium is acetone,
the thickness of the individual fins of the heat radiating fin is 0.1 to 1mm,
the distance between adjacent fins of the radiating fin is 2-5 mm.
In at least one possible embodiment, the flat heat pipe type power battery system for a vehicle includes one or more flat heat pipes and one or more battery modules, corresponding heat dissipation fins, a plurality of heat dissipation fans, and the battery modules are disposed at the same side of a main surface of one flat heat pipe,
the major surface of the battery module is attached to the major surface of the flat heat pipe.
Embodiments of the present application also provide an electric vehicle, including the aforementioned flat-panel heat pipe type power battery system for a vehicle,
and one end of the power battery system, provided with the radiating fins, is closer to the head direction of the electric automobile than one end of the power battery system, provided with the battery module.
Drawings
Fig. 1 is a schematic structural view of a power battery system according to an embodiment of the present application.
Fig. 2A is a top view of a power cell system according to one embodiment of the present application.
Fig. 2B is a side view of a power cell system according to one embodiment of the present application.
Fig. 3 is a schematic structural view of a housing of a power battery system according to an embodiment of the present application.
Fig. 4 is a schematic view illustrating a structure of a battery module and a cooling system of a power battery system according to an embodiment of the present application.
Fig. 5 is a schematic structural view of a flat heat pipe and a heat dissipation fin of a power battery system according to an embodiment of the present application.
Fig. 6 is a schematic cross-sectional structure of a flat heat pipe of a power battery system according to an embodiment of the present application.
Fig. 7 is a schematic view of a horizontal cross-section of a flat plate heat pipe of a power battery system according to one embodiment of the present application.
Fig. 8 is an enlarged partial schematic view of a battery management system according to one embodiment of the present application.
Description of the reference numerals
100. Battery module
110. Battery cell set
200. Cooling system
210. Flat heat pipe
211. Shell body
212. Capillary core
213. Steam cavity
214. Support column
215. Positioning hole
220. Radiating fin
230. Heat radiation fan
240. Baffle plate
300. Battery management system
310. Manual maintenance switch
320 voltage-temperature acquisition board
330. Quick-charging connector
340. Positive and negative electrode connector
350. Fuse protector
361. Pre-charging relay
362. Positive relay
363. Negative relay
370. Precharge resistor
380. Current sensor
400. Battery system housing
410. Lifting lug
420. Filter screen
Detailed Description
Exemplary embodiments of the present application are described below with reference to the accompanying drawings. It should be understood that these specific descriptions are merely illustrative of how one skilled in the art may practice the present application and are not intended to be exhaustive of all of the possible ways of practicing the present application nor to limit the scope of the present application.
Embodiments of the present application provide a flat heat pipe type power battery system (hereinafter sometimes simply referred to as "power battery system") for a vehicle, which may include a battery module 100, a cooling system 200, a battery management system 300, and a battery system case 400, as shown in fig. 1, 2A, and 2B.
Specifically, as shown in fig. 1, 2A, and 2B, the power battery system may include one or more battery modules 100, the battery modules 100 may include a plurality of battery cells 110, and the battery cells 110 may include a plurality of battery cells. For example, the power battery system in the figure is provided with two battery modules 100 in total, each battery module 100 may be provided with 8 battery cell groups 110 in the form of 4 columns and 2 rows, and each battery cell group 110 may be provided with 12 battery cells 111 inside. Of the 12 cells 111, two cells 111 may be connected in parallel to form a group, and the six parallel cells 111 may be connected in series, i.e. in a form of "2P 6S". For example, the battery module 100 adopting the above arrangement has a volumetric energy density of 375Wh/L and a mass energy density of 185Wh/kg.
Preferably, the cells selected for the cell stack 110 may be square cells of aluminum casing, typically square cells having a higher energy density than cylindrical cells. It is understood that the cells selected for the cell stack 110 do not exclude cylindrical cells.
Further, as shown in fig. 4 and 5, the cooling system 200 may include a flat heat pipe 210, a heat dissipation fin 220, and a heat dissipation fan 230. The flat heat pipe 210 may be connected to the battery module 100 and the heat dissipation fins 220. As shown in fig. 6, the flat heat pipe 210 may include a housing 211, a wick 212, and a vapor chamber 213. The outer portion of the flat heat pipe 210 is a case 211, a capillary wick 212 may be disposed at a portion of the inner side of the case 211, which is close to the battery module 100, and a steam chamber 213 may be formed at a portion of the inner side of the case 211, which is far from the battery module 100. The flat heat pipe 210 may be filled with a heat exchange medium.
As shown in fig. 5, 6, and 7, the flat heat pipe 210 may further include a plurality of support posts 214 and a plurality of positioning holes 215. As shown in fig. 7, a plurality of support columns 214 are formed on the flat heat pipe 210, and both ends thereof may be connected to the upper and lower surfaces of the housing 211, respectively, for supporting the structure of the flat heat pipe 210. The plurality of positioning holes 215 may be through holes formed at the support posts 214 to facilitate connection of the flat heat pipe 210 with the battery module 100. The positioning holes 215 are formed on the support posts 214 to avoid the influence of the positioning holes on the heat pipe structure.
The heat radiating fin 220 may be disposed at one end of the flat heat pipe 210, and the heat radiating fan 230 may be connected to the heat radiating fin 220. It is understood that the heat radiation fan 230 may be disposed near the heat radiation fin 220 instead of being directly connected to the heat radiation fin 220. Illustratively, four heat dissipation fans 230 are provided in total in fig. 4. The airflow direction of the heat radiation fan 230 may be identical to the fin extension direction of the heat radiation fin 220.
A baffle 240 may be further disposed between the heat dissipation fins 220, the heat dissipation fans 230, and the battery module 100, and the baffle 240 may be connected to the flat heat pipe 210 to isolate the battery module 100 from the external environment such as the heat dissipation fins 220, the heat dissipation fans 230, and the like.
The area of the flat heat pipe 210 connected to the battery module 100 is an endothermic evaporation area, and the area of the flat heat pipe 210 connected to the heat dissipation fins 220 is a condensation heat dissipation area. The heat exchange working medium (mainly the liquid heat exchange working medium at the capillary core 212) filled in the flat heat pipe 210 can absorb the heat generated by the battery module in the heat absorption and evaporation area to be vaporized, and the vaporized gaseous heat exchange working medium can release heat to be liquefied again in the condensation and heat dissipation area. The released heat is discharged from the power battery system by the heat radiating fins 220 and the heat radiating fan 230.
Preferably, a heat conductive adhesive may be applied between the flat heat pipe 210 and the battery module 100 disposed thereon, so that the heat transfer efficiency of the battery module 100 to the flat heat pipe 210 can be enhanced, thereby enhancing the cooling effect of the cooling system 200. Meanwhile, the heat-conducting glue can also enable the connection between the battery module 100 and the flat heat pipe 210 to be firmer.
Preferably, the thickness of the flat heat pipe 210 is 10mm, wherein the thickness of the upper and lower cases 211 of the flat heat pipe 210 may be 2mm, the thickness of the wick 212 may be 3mm, and the thickness of the vapor chamber 213 may be 3mm.
Preferably, the individual fin thickness of the heat dissipation fin 220 may be 0.1 to 1mm, and the pitch of adjacent fins may be 2 to 5mm.
Preferably, as shown in fig. 2A and 4, with the height of the battery cell group 110 being H, the height H of the heat dissipation fins 220 may be 0.8H to 1H, and the diameter R of the heat dissipation fan 230 may be 0.8H to 1H.
Preferably, as shown in fig. 5, the length direction of the heat radiating fin 220 may be identical to the width direction of the flat heat pipe 210 with the length of the flat heat pipe 210 as L. The length of the heat radiating fin 220 may be the same as the width of the flat heat pipe 210. The width B of the heat dissipation fin 220 extending along the length direction of the flat heat pipe 210 is preferably 0.1L to 0.2L.
Preferably, the capillary core 212 may be a porous capillary core formed by sintering metal powder, and the metal may be selected from simple metals such as aluminum, nickel, copper, etc.
Preferably, in combination with the working temperature range of the power battery when the electric automobile works, the heat exchange working medium in the flat heat pipe 210 can be acetone.
As shown in fig. 1, 2A, 2B, 8, the battery management system 300 may include a manual maintenance switch 310 (MSD), a plurality of voltage-temperature acquisition boards (VTBU) 320, a quick-charge connector 330, a positive-negative connector 340, one or more fuses 350, a pre-charge relay 361, a positive relay 362, a negative relay 363, a pre-charge resistor 370, a current sensor 380, and the like.
For example, as shown in fig. 2B, 2 voltage-temperature collection plates 320 may be respectively provided at both sides of each battery module 100 in this embodiment, i.e., 8 voltage-temperature collection plates 320 are provided in total. The voltage-temperature acquisition board 320 can have 12 voltage acquisition channels and 6 temperature acquisition channels, and can cover voltage and temperature information acquisition of each branch in the battery module 100, so that online equalization based on resistance energy consumption under all working conditions is realized.
It will be appreciated that the components of the battery management system 300 and their arrangement described above are exemplary and not limiting to the specific embodiments of the present application. The battery management system 300 may also include various components not shown in the figures, such as: the battery management system 300 may further include a Battery Management System (BMS) motherboard, a thermistor (PTC) connector, an on-board charger (OBC) connector, a Micro Control Unit (MCU), and the like.
By way of example, the design of the battery management system 300 may perform a variety of functions. For example: overcurrent protection, high-voltage interlocking, pre-charging loop, collision prevention and the like. And collecting information such as total voltage, total current, insulation, environment/cooling medium temperature, charging interface temperature, charging loop state and the like of the battery module. And a contactor for controlling the battery system, a thermal management system, charge and discharge control, etc. A battery system state of charge (SOC), state of health (SOH), and state of function (SOF) may be performed. And calculating parameters such as the actual capacity and the internal resistance of the battery, diagnosing faults of the battery system and carrying out corresponding fault processing.
As shown in fig. 3, the battery system case 400 has a box structure, and the battery module 100, the cooling system 200, and the battery management system 300 may be disposed inside the battery system case 400. A plurality of lugs 410 may be provided on the battery system housing 400 for mounting the power battery system inside the electric vehicle. A screen 420 may be provided at a region of the battery system housing 400 near the cooling fan 230 to facilitate the passage of cooling air flow and to block gravel or the like that may be encountered during the running of the vehicle.
The embodiment of the application also provides an electric automobile, which comprises the flat-plate heat pipe type power battery system for the automobile.
Preferably, one end of the power battery system where the heat dissipation fins 220 and the heat dissipation fan 230 are disposed may face the head of the electric vehicle, i.e., the airflow direction of the heat dissipation fan 230 may be consistent with the driving direction of the vehicle. To enhance the air flow near the heat radiating fins 220 and to enhance the heat radiating effect of the cooling system.
It is understood that electric vehicles referred to as embodiments of the present application may include pure electric vehicles and hybrid vehicles.
Some of the advantageous effects of the above-described embodiments of the present application are briefly described below.
(1) Embodiments of the present application provide a flat heat pipe power battery system for a vehicle that employs a flat heat pipe cooling system. Compared with the traditional liquid cooling type and air cooling type cooling system, the cooling system has higher cooling efficiency, can ensure that the power battery is at a proper working temperature, improves the consistency of working conditions of each battery core when the power battery works, and prevents thermal runaway from spreading when the battery core is in thermal runaway.
(2) The flat heat pipe type power battery system for the vehicle provided by the embodiment of the application discharges heat absorbed by the flat heat pipe through the radiating fins, the radiating fans and the like. The arrangement direction of the radiating fins and the radiating fans can face the direction of the vehicle head, and the air flow generated during the running of the vehicle is used for cooling and radiating the battery system.
(3) Compared with the traditional air cooling and liquid cooling heat dissipation modes, the flat heat pipe type power battery system for the vehicle, provided by the embodiment of the application, has the advantages that heat generated by the battery module can be transferred to the heat dissipation fins through the flat heat pipe, and the heat dissipation fins do not need to be transferred through gas or liquid flowing through the battery module. Therefore, the radiating fins can be separated from the battery module in a sealing way, and the battery state monitoring such as air pressure and gas detection of the battery module can be conveniently realized.
(4) The embodiment of the application provides a flat heat pipe type power battery system for a vehicle, which is characterized in that a flat heat pipe is arranged on one side of a battery module comprising a plurality of single-core groups or between two battery modules, and the whole power battery system is simple in structure, compact in structure and convenient to assemble. The side of the battery module herein may particularly refer to the side of the main surface (i.e., the surface having the largest area) thereof.
It is to be understood that in the present application, when the number of parts or members is not particularly limited, the number may be one or more, and the number herein refers to two or more. For the case where the number of parts or members is shown in the drawings and/or described in the specification as a specific number such as two, three, four, etc., the specific number is generally illustrative and not restrictive, it may be understood that a plurality, i.e., two or more, but this does not mean that the present application excludes one.
It should be understood that the above embodiments are merely exemplary and are not intended to limit the present application. Those skilled in the art can make various modifications and changes to the above-described embodiments without departing from the scope of the present application.

Claims (10)

1. A flat heat pipe type power battery system for a vehicle is characterized by comprising a battery module (100) and a cooling system (200),
the battery module (100) comprises a plurality of battery cell groups (110), each battery cell group (110) comprises a plurality of battery cells, the cooling system (200) comprises a flat heat pipe (210), a radiating fin (220) and a plurality of radiating fans (230),
the battery module (100) is connected to the flat heat pipe (210), the heat dissipation fins (220) are connected to the flat heat pipe (210),
the plurality of heat dissipation fans (230) are arranged near the heat dissipation fins (220) and used for dissipating heat of the heat dissipation fins (220),
the flat heat pipe (210) comprises a shell (211), a capillary core (212) and a steam cavity (213), the inside of the flat heat pipe (210) is filled with heat exchange working medium,
the inner side of the shell (211) is close to the position of the battery module (100) and is provided with the capillary core (212), the part, away from the battery module (100), of the inner side of the shell (211) forms the steam cavity (213), and the heat exchange working medium can be subjected to gas-liquid conversion in the capillary core (212) and the steam cavity (213).
2. The flat-panel heat pipe power battery system for a vehicle of claim 1, further comprising a battery management system (300) connected to the battery module (100), the battery management system (300) comprising a manual service switch (310), a plurality of voltage-temperature acquisition boards (320), a quick-charge connector (330), a positive-negative connector (340), a plurality of fuses (350).
3. The flat-panel heat pipe type power battery system for a vehicle according to claim 1, further comprising a battery system case (400) provided outside the battery module (100) and the cooling system (200),
the cooling system (200) further comprises a baffle (240),
the baffle plate (240) is arranged between the battery module (100) and the radiating fins (220) and the radiating fan (230),
the battery system case (400) is formed with a screen (420) in the vicinity of the cooling fan (230).
4. The flat-panel heat pipe power battery system for a vehicle according to claim 1, wherein the flat-panel heat pipe (210) further comprises a plurality of support posts (214),
both ends of the plurality of support columns (214) are respectively connected to the housing (211).
5. The flat-panel heat pipe type power battery system for a vehicle according to claim 4, wherein the support post (214) further forms one or more positioning holes (215) for connecting the battery module (100) to the flat-panel heat pipe (210).
6. The flat-panel heat pipe type power battery system for a vehicle according to claim 1, wherein the height of the cell group (110) is H,
the height H of the radiating fin (220) is 0.8H to 1H, and the diameter R of the radiating fan (230) is 0.8H to 1H.
7. The flat heat pipe type power battery system for a vehicle according to claim 1, wherein the flat heat pipe (210) has a length L, the length direction of the heat radiating fin (220) coincides with the width direction of the flat heat pipe (210),
the width B of the heat radiation fin (220) extending along the length direction of the flat heat pipe (210) is 0.1L to 0.2L.
8. The flat-plate heat pipe type power battery system for a vehicle according to claim 1, wherein the heat exchange medium is acetone,
the thickness of the individual fins of the heat radiating fin (220) is 0.1 to 1mm,
the spacing between adjacent fins of the heat radiating fin (220) is 2 to 5mm.
9. The flat heat pipe type power battery system for a vehicle according to claim 1, wherein,
the flat heat pipe type power battery system for a vehicle includes one or more flat heat pipes (210) and one or more battery modules (100), corresponding heat dissipation fins (220), a plurality of heat dissipation fans (230) and the battery modules (100) are disposed at the same side of a main surface of one flat heat pipe (210),
a main surface of the battery module (100) is attached to a main surface of the flat heat pipe (210).
10. An electric vehicle characterized by comprising the flat heat pipe type power battery system for a vehicle according to any one of claims 1 to 9,
one end of the power battery system, provided with the radiating fins (220), is closer to the head direction of the electric automobile than one end of the power battery system, provided with the battery module (100).
CN202310204916.8A 2023-03-06 2023-03-06 Flat heat pipe type power battery system for vehicle and electric automobile Pending CN116454451A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310204916.8A CN116454451A (en) 2023-03-06 2023-03-06 Flat heat pipe type power battery system for vehicle and electric automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310204916.8A CN116454451A (en) 2023-03-06 2023-03-06 Flat heat pipe type power battery system for vehicle and electric automobile

Publications (1)

Publication Number Publication Date
CN116454451A true CN116454451A (en) 2023-07-18

Family

ID=87131004

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310204916.8A Pending CN116454451A (en) 2023-03-06 2023-03-06 Flat heat pipe type power battery system for vehicle and electric automobile

Country Status (1)

Country Link
CN (1) CN116454451A (en)

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