CN111554999A - Battery pack heat dissipation device and battery system - Google Patents
Battery pack heat dissipation device and battery system Download PDFInfo
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- CN111554999A CN111554999A CN202010317392.XA CN202010317392A CN111554999A CN 111554999 A CN111554999 A CN 111554999A CN 202010317392 A CN202010317392 A CN 202010317392A CN 111554999 A CN111554999 A CN 111554999A
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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
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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
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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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
- H01M10/63—Control systems
- H01M10/635—Control systems based on ambient temperature
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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
- H01M10/65—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
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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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
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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
- H01M10/65—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
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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
- H01M10/65—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
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
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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
- H01M10/65—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
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
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- 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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- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Automation & Control Theory (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a battery pack heat dissipation device which comprises a liquid cooling plate, a water circulation system and a box body for placing a battery pack, wherein the liquid cooling plate is arranged at the bottom of the box body; the battery system is characterized by comprising the battery pack heat dissipation device, wherein the battery pack is placed in the box body. According to the invention, the heat dissipation efficiency of heat to the outside is greatly improved by adopting a heat dissipation mode of combining the water circulation system with the liquid cooling plate, the opening and closing of the water circulation system can be adjusted according to the use state, when the temperature of the battery pack is overhigh, the water circulation system is opened, the higher the temperature is, the higher the working power of the water circulation system is adjusted to be, the transportation and dissipation of heat to the outside are accelerated, and the position of the liquid cooling plate is positioned on the box surface at the highest temperature of the battery pack box body, so that the heat dissipation efficiency is greatly improved.
Description
Technical Field
The invention relates to the technical field of battery heat dissipation, in particular to a battery pack heat dissipation device and a battery system.
Background
The new energy electric automobile is used as a new generation of transportation tool, and has incomparable advantages compared with the traditional automobile in the aspects of energy conservation and emission reduction and reduction of human dependence on traditional fossil energy.
The battery is used as a core component of the new energy electric automobile, and whether the battery can safely and reliably operate is important. On one hand, when the electric automobile is just started and climbs a slope, or in the charging and discharging processes, the battery can emit a large amount of heat. If the heat cannot be rapidly dissipated, the thermal runaway phenomenon of the battery is caused, and the battery has the danger of severe expansion and explosion in severe cases. On the other hand, when the electric automobile runs on a rugged road, friction and collision of different degrees can occur between the batteries, so that the batteries are damaged, and sparks are more likely to be generated by friction, thereby causing safety accidents.
The traditional heat management mode is mainly an air-cooled heat dissipation system, and the air-cooled heat dissipation has the advantage of simple structure, but the heat dissipation effect is not obvious, and the temperature difference of the battery pack is large; or an air-cooled heat dissipation system is matched with the phase-change material for heat dissipation, and because the temperature change of the battery is large, when the temperature of the battery is too high, the phase-change material is combined with air-cooled heat dissipation untimely, certain influence is caused on the battery, the service life of the battery is shortened, and meanwhile, certain safety risk also exists.
Disclosure of Invention
The invention aims to solve the problems that the air-cooled heat dissipation system is matched with the phase-change material for heat dissipation in the background technology, and the phase-change material is not timely combined with air-cooled heat dissipation when the temperature of the battery is overhigh due to large temperature change of the battery, so that certain influence is caused on the battery, the service life of the battery is shortened, and certain safety risk also exists; a battery pack heat dissipation device and a battery system are provided. According to the invention, the mode that the water circulation system is combined with the liquid cooling plate is adopted, the heat dissipation efficiency to the outside is greatly increased, the opening and closing of the water circulation system can be adjusted according to the use state, when the temperature of the battery pack is too high, the water circulation system is opened, the higher the temperature is, the higher the working power of the water circulation system is adjusted to be, the outward transportation and dissipation of the heat are accelerated, and the position of the liquid cooling plate is positioned on the box surface at the highest temperature of the battery pack box body, so that the heat dissipation efficiency is greatly improved.
In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a group battery heat abstractor, includes liquid cooling board, water circulating system and is used for placing the box of group battery, the liquid cooling board is installed the bottom of box, water circulating system one end is connected the water inlet of liquid cooling board, the other end are connected the delivery port of liquid cooling board. Therefore, because the box body is generally open, a lot of heat emitted by the batteries can be reserved under the box body and cannot be emitted in time, the bottom of the box body made of the original heat-radiating material is replaced by a liquid cooling plate as a fixed bottom surface, the liquid cooling plate is directly connected to the lower surface of the battery pack, and the liquid cooling plate is a common technology and absorbs the emitted heat more quickly through liquid; a water circulation system is additionally arranged to enable the liquid in the liquid cooling plate to flow, and the liquid is transported to the outside for heat dissipation after heat is absorbed, so that the heat dissipation efficiency is higher, the adopted medium is generally water, the specific heat capacity of the water is the largest, and the heat absorption effect is the best; adopt water circulating system to combine the mode of liquid cold drawing, accelerate the efficiency that the heat distributes toward the outside greatly to water circulating system's switching can be adjusted according to the user state, when the group battery high temperature, opens water circulating system, and the temperature is higher, and water circulating system work's power is transferred to higher, accelerates the heat toward outer transportation and gives off, and the position of liquid cold drawing is located the highest position case face of group battery box temperature, has promoted the radiating efficiency greatly.
Furthermore, water circulating system includes water pump, water tank and pipe, water tank one end is passed through pipe connection the delivery port of liquid cooling board, the other end passes through pipe connection the end of intaking of water pump, the play water end of water pump passes through pipe connection the water inlet of liquid cooling board. Therefore, the simpler the structure of the water circulation system is, the better the structure is, and the more convenient the arrangement of the whole structure in the actual use process is; the liquid cooling plate is characterized in that a multi-section bent liquid flow pipe is arranged on one plate to increase the heated area of liquid, the liquid flow pipe of the liquid cooling plate is provided with a water outlet and a water inlet, the water outlet is connected to an external water tank through an external pipe, the water tank is made of a heat dissipation material, the water outlet at the other end of the water tank is connected with a water pump, and the water pump is connected with the water inlet of the liquid cooling plate; water pump take the water in the water tank out after the start-up and transport the water inlet of liquid cooling board, after flowing in the liquid cooling board, the heat that the group battery distributed out is fully absorbed to water, receives the effect of water pump pressure, flows the return water mouth of water tank again, and water is taken out by the water pump once more after the cooling, so reciprocal, realizes hydrologic cycle, reaches the radiating effect of high-efficient circulation.
Furthermore, a water outlet of the liquid cooling plate is provided with a temperature sensor, and the temperature sensor is connected with the control end of the water pump; when the temperature detected by the temperature sensor exceeds a set threshold value, the control end of the water pump turns on the water pump; and when the temperature detected by the temperature sensor is lower than a set threshold value, the control end of the water pump closes the water pump. Therefore, when the water pump does not work, water in the liquid cooling plate does not flow, a temperature sensor is arranged at a water outlet of the liquid cooling plate or any position contacted with the box body, the temperature sensor is connected with a control end of the water pump, the control end of the water pump is a module or a structure for controlling the water pump to be opened or closed, the control end is connected with the temperature sensor, the temperature sensor sends the detected temperature to the control end in real time, and the control end carries out command output according to the detected temperature data; when the temperature sensor detects that the temperature data exceeds a set threshold value, after the control end receives a signal, a switch of the water pump is turned on, the water pump starts to work, and liquid in the whole water circulation system and the liquid cooling plate starts to flow so as to carry out heat output; when the box body battery does not work any more or the heating is not high, the temperature sensor detects that the temperature of the box body battery is fixed at a set threshold value, after the control end receives a signal of the temperature sensor, a control command is changed, a switch of the water pump is turned off, liquid does not flow any more, and the whole water circulation system does not work any more; at the moment, the heat dissipation process can be controlled only by the heat dissipation material of the box body, the liquid cooling and natural heat dissipation.
Further, the outer wall of box is made by the foamy copper material, will through a plurality of baffles in the box internal portion separates into a plurality of battery standing grooves. Therefore, the box body is a large open cubic box, the partition plates are additionally arranged in the box body and divide the large space into a plurality of small spaces, each small space is provided with one battery, and the batteries can be connected through the metal conducting strips, so that the battery box belongs to the mature technology and does not need to be explained; the purpose of adopting the baffle to separate is that the heat that produces between the battery can not gather together, leads to the rising of local temperature, and the box outer wall is made by foamy copper material, has fine radiating effect.
Further, the baffle is including the three-layer of laminating in proper order, the intermediate level of baffle is the heat conduction graphite flake, two skin of baffle are made by phase change material. The partition board is similar to a structure of a plywood and comprises three layers of tightly attached structures, wherein the two outer layers and the middle layer are formed by straight phase-change materials, and the phase-change materials have good temperature uniformity and heat storage performance and can ensure that the temperature difference between single batteries in the battery pack is not more than 5 ℃; the middle layer is made of heat-conducting graphite materials, the heat-conducting graphite flakes are brand-new heat-conducting and heat-dissipating materials, have unique crystal grain orientation and conduct heat uniformly along two directions, and the lamellar structure can adapt to any surface well and can accelerate heat exchange on two sides of the partition plate when used, so that the temperature in the battery pack is more balanced, and the phenomenon of local overheating cannot be caused.
Furthermore, the total thickness d of the partition board is within the range of 6 mm-8 mm. Therefore, in order to achieve tighter layout and smaller occupied space, the thickness of the adopted partition plate is not too thick, and also not too thin, which can affect the heat conduction efficiency, and the total thickness of the partition plate is more suitable from 6mm to 8 mm.
Preferably, the total thickness d of the separator is 7 mm. Thus, the thickness of the two outer layers is 3mm, the thickness of the middle layer is 1mm, and the uniform distribution is more reasonable.
The battery system comprises a battery pack and any one of the battery pack heat dissipation devices, and the battery pack is placed in the box body. Therefore, the battery pack heat radiating device is combined with the battery pack to form a usable battery system, and the battery system is high in stability and suitable for electric automobiles or electric motorcycles.
Further, the battery pack is a lithium battery pack. Therefore, the lithium battery is a good rechargeable battery, has high stability and long service life, and has better effect when used in the battery system.
Compared with the prior art, the beneficial effects are:
1. adopt water circulating system to combine the mode of liquid cold drawing, accelerate the efficiency that the heat distributes toward the outside greatly to water circulating system's switching can be adjusted according to the user state, when the group battery high temperature, opens water circulating system, and the temperature is higher, and water circulating system work's power is transferred to higher, accelerates the heat toward outer transportation and gives off, and the position of liquid cold drawing is located the highest position case face of group battery box temperature, has promoted the radiating efficiency greatly.
2. Through setting up temperature sensor, control opening of the water pump among the water circulating system stops, adjust the radiating process according to different situations for the radiating efficiency is higher, more accurate.
3. The partition plates are made of multilayer composite materials, so that the temperature difference between the single batteries in the battery pack can be guaranteed not to exceed 5 ℃, the temperature in the battery pack is more balanced, and the phenomenon of local overheating cannot be caused; the safety is higher.
Drawings
Fig. 1 is a schematic view of the overall structure of the battery pack heat sink according to the present invention.
Fig. 2 is a schematic view of the structure of the liquid-cooled panel of the present invention.
Fig. 3 is a schematic view of the overall structure of the battery system of the present invention.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it is to be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the above terms may be understood by those skilled in the art according to specific situations.
The technical scheme of the invention is further described in detail by the following specific embodiments in combination with the attached drawings:
example 1
As shown in fig. 1, the battery pack heat dissipation device includes a liquid cooling plate 2, a water circulation system 3, and a box body 1 for placing a battery pack, wherein the liquid cooling plate 2 is installed at the bottom of the box body 1, and one end of the water circulation system 3 is connected to a water inlet 21 of the liquid cooling plate 2, and the other end of the water circulation system is connected to a water outlet 20 of the liquid cooling plate 2. The water circulation system 3 comprises a water pump 5, a water tank 4 and a guide pipe 6, one end of the water tank 4 is connected with the water outlet 20 of the liquid cooling plate 2 through the guide pipe 6, the other end of the water tank is connected with the water inlet end of the water pump 5 through the guide pipe 6, and the water outlet end of the water pump 5 is connected with the water inlet 21 of the liquid cooling plate 2 through the guide pipe 6. A water outlet 20 of the liquid cooling plate 2 is provided with a temperature sensor, and the temperature sensor is connected with a control end of the water pump 5; when the temperature detected by the temperature sensor exceeds a set threshold value, the control end of the water pump 5 turns on the water pump 5; and when the temperature detected by the temperature sensor is lower than a set threshold value, the control end of the water pump 5 closes the water pump 5.
In this embodiment, the outer wall of the box body 1 is made of a foamed copper material, and the inside of the box body 1 is divided into a plurality of battery accommodating grooves 11 by a plurality of partition boards 10. The partition board 10 comprises three layers which are attached in sequence, the middle layer of the partition board 10 is a heat conduction graphite sheet, and two outer layers of the partition board 10 are made of phase change materials. The overall thickness d of the separator 10 is 7 mm.
In the embodiment, the box body 1 is a large open cubic box, the partition plates 10 are additionally arranged in the box body 1, the large space is partitioned by the partition plates 10 to form a plurality of small spaces, each small space is provided with one battery, and the batteries can be connected through metal conducting strips, so that the battery box belongs to the mature technology and does not need to be explained; the purpose of adopting baffle 10 to separate is that the heat that produces between the battery can not gather together, leads to the rising of local temperature, and the box 1 outer wall is made by foamy copper material, has fine radiating effect. The partition board 10 is similar to a plywood structure and comprises three layers of tightly attached structures, wherein the outer two layers and the middle layer are formed by tightly attaching three layers, the two outer layers are made of straight phase-change materials, and the phase-change materials have good temperature uniformity and heat storage performance and can ensure that the temperature difference between single batteries in a battery pack is not more than 5 ℃; the middle layer is made of heat-conducting graphite materials, the heat-conducting graphite flakes are brand-new heat-conducting and heat-dissipating materials, have unique crystal grain orientation and conduct heat uniformly along two directions, and the lamellar structure can adapt to any surface well and can accelerate heat exchange at two sides of the partition plate 10 when used, so that the temperature in the battery pack is more balanced, and the phenomenon of local overheating cannot be caused. In order to arrange more closely and occupy less space, the adopted partition plate 10 is not too thick and too thin, which affects the heat conduction efficiency, the thickness of the two outer layers is 3mm, the thickness of the middle layer is 1mm, and the uniform distribution is more reasonable.
Because the box body 1 is opened, a lot of heat emitted by the battery can be reserved under the box body 1 and cannot be emitted in time, a liquid cooling plate 2 is additionally arranged under the bottom surface of the box body 1 made of the original heat-radiating material, and the liquid cooling plate 2 is a common technology and can more quickly absorb the emitted heat through liquid; a water circulation system 3 is additionally arranged to enable the liquid in the liquid cooling plate 2 to flow, and the liquid is transported to the outside for heat dissipation after heat is absorbed, so that the heat dissipation efficiency is higher, the adopted medium is generally water, the specific heat capacity of the water is the largest, and the heat absorption effect is the best; adopt water circulating system 3 to combine the mode of liquid cold drawing 2, accelerate the efficiency that the heat distributes toward the outside greatly, and water circulating system 3's switching can be adjusted according to the user state, when the group battery high temperature, open water circulating system 3, the temperature is higher, the power of water circulating system 3 work is transferred to higher, accelerate the heat toward transporting outward and giving off, and the position of liquid cold drawing 2 is located the position case face that group battery box 1 temperature is the highest, has promoted the radiating efficiency greatly.
The simpler the structure of the water circulation system 3 is, the better the structure is, the more convenient the arrangement of the whole structure in the actual use process is; as shown in fig. 2, the liquid cooling plate 2 is formed by arranging a multi-section bent liquid flow pipe on a plate to increase the heated area of the liquid, the liquid flow pipe of the liquid cooling plate 2 has a water outlet 20 and a water inlet 21, the water outlet 20 is connected to an external water tank 4 through an external conduit 6, the water tank 4 is made of a heat dissipation material, the water outlet at the other end of the water tank 4 is connected to a water pump 5, and the water pump 5 is connected to the water inlet 21 of the liquid cooling plate 2; water pump 5 takes out the water in the water tank 4 after starting and transports the water inlet 21 of liquid cooling board 2, and after flowing in liquid cooling board 2, the heat that the group battery of abundant absorption of water distributed out receives the effect of 5 pressures of water pump, and in the return water mouth of water tank 4 that flows again, water is taken out by water pump 5 once more after the cooling, so reciprocal, realizes hydrologic cycle, reaches the radiating effect of high-efficient circulation. When the water pump 5 does not work, water in the liquid cooling plate 2 does not flow, a temperature sensor is arranged at a water outlet 20 of the liquid cooling plate 2 or any position in contact with the box body 1, the temperature sensor is connected with a control end of the water pump 5, the control end of the water pump 5 is a module or a structure for controlling the water pump 5 to be opened or closed, the control end is connected with the temperature sensor, the temperature sensor sends the detected temperature to the control end in real time, and the control end outputs a command according to the detected temperature data so as to control the starting and stopping of the water pump 5; when the temperature sensor detects that the temperature data exceeds a set threshold value, after the control end receives a signal, the switch of the water pump 5 is turned on, the water pump 5 starts to work, and the liquid in the whole water circulation system 3 and the liquid cooling plate 2 starts to flow so as to carry out heat output; when the battery of the box body 1 does not work any more or the heating is not high, the temperature sensor detects that the temperature of the box body is fixed at a set threshold value, after the control end receives a signal of the temperature sensor, a control command is changed, the switch of the water pump 5 is turned off, the liquid does not flow any more, and the whole water circulation system 3 does not work any more; at the moment, the heat dissipation process can be controlled only by the heat dissipation material of the box body 1, the liquid cooling and the natural heat dissipation.
Example 2
The present embodiment provides a battery system, as shown in fig. 2, including a lithium battery pack 12 and the battery pack heat dissipation device provided in embodiment 1, wherein the lithium battery pack 12 is disposed in a case 1; each battery cell in the lithium cell group 12 is evenly installed in the battery standing groove 11 of box 1 to the rational connection, also has baffle 10 to separate between the outer wall of battery and box 1. The battery pack heat sink in example 1 is combined with a battery pack to form a usable battery system, which has high stability and is suitable for electric vehicles or electric motorcycles. The lithium battery 12 is a good rechargeable battery, has high stability and long service life, and has better effect when used in the battery system.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (9)
1. The utility model provides a group battery heat abstractor, its characterized in that includes liquid cooling board, water circulating system and is used for placing the box of group battery, the liquid cooling board is installed the bottom of box, water circulating system one end is connected the water inlet of liquid cooling board, the other end is connected the delivery port of liquid cooling board.
2. The battery pack heat sink according to claim 1, wherein the water circulation system comprises a water pump, a water tank and a conduit, wherein one end of the water tank is connected to the water outlet of the liquid cooling plate through the conduit, the other end of the water tank is connected to the water inlet of the water pump through the conduit, and the water outlet of the water pump is connected to the water inlet of the liquid cooling plate through the conduit.
3. The battery pack heat sink according to claim 2, wherein the water outlet of the liquid cooling plate is provided with a temperature sensor, and the temperature sensor is connected with the control end of the water pump; when the temperature detected by the temperature sensor exceeds a set threshold value, the control end of the water pump turns on the water pump; and when the temperature detected by the temperature sensor is lower than a set threshold value, the control end of the water pump closes the water pump.
4. The battery pack heat sink according to claim 1, wherein the outer wall of the case is made of a copper foam material, and the inside of the case is partitioned into the battery receiving grooves by partitions.
5. The battery pack heat sink according to claim 4, wherein the partition comprises three layers attached in sequence, the middle layer of the partition is a heat conducting graphite sheet, and both outer layers of the partition are made of a phase change material.
6. The battery pack heat sink according to claim 4, wherein the thickness d of the spacer is in the range of 6mm ≦ d ≦ 8 mm.
7. The battery pack heat sink of claim 6, wherein the thickness d of the spacer is 7mm in size.
8. A battery system comprising a battery pack and the battery pack heat sink of any one of claims 1 to 7, wherein the battery pack is placed in the case.
9. The battery system of claim 8, wherein the battery pack is a lithium battery pack.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010317392.XA CN111554999A (en) | 2020-04-21 | 2020-04-21 | Battery pack heat dissipation device and battery system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010317392.XA CN111554999A (en) | 2020-04-21 | 2020-04-21 | Battery pack heat dissipation device and battery system |
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| CN111554999A true CN111554999A (en) | 2020-08-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113782770A (en) * | 2021-08-02 | 2021-12-10 | 佛山市飞驰汽车科技有限公司 | Fuel cell of fuel cell automobile |
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Application publication date: 20200818 |