CN116544562A - Lithium ion battery pack thermal management device - Google Patents
Lithium ion battery pack thermal management device Download PDFInfo
- Publication number
- CN116544562A CN116544562A CN202310831363.9A CN202310831363A CN116544562A CN 116544562 A CN116544562 A CN 116544562A CN 202310831363 A CN202310831363 A CN 202310831363A CN 116544562 A CN116544562 A CN 116544562A
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- China
- Prior art keywords
- battery
- air
- battery pack
- box
- pressure plate
- Prior art date
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 21
- 239000011229 interlayer Substances 0.000 claims abstract description 35
- 239000012530 fluid Substances 0.000 claims abstract description 27
- 230000001105 regulatory effect Effects 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 12
- 230000033228 biological regulation Effects 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 8
- 230000004888 barrier function Effects 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 230000017525 heat dissipation Effects 0.000 abstract description 10
- 230000001276 controlling effect Effects 0.000 description 15
- 238000010438 heat treatment Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
-
- 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
- H01M10/6561—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
- H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
- H01M10/663—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an air-conditioner or an engine
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/258—Modular batteries; Casings provided with means for assembling
-
- 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 invention relates to the technical field of battery pack thermal management, and discloses a lithium ion battery pack thermal management device, which comprises a battery box and a battery pack, wherein the battery pack is formed by combining two groups of identical battery modules, each battery module consists of a plurality of U-shaped structures, and each U-shaped structure comprises two groups of side parts and a plurality of groups of middle parts; a heat conduction interlayer is arranged between two groups of battery modules in the battery packs, and a plurality of groups of battery packs are arranged in a row; according to the lithium ion battery pack thermal management device, through the U-shaped combination design of the two battery modules in the battery pack, the channels for fluid flow can be arranged in the battery pack, meanwhile, the heat dissipation area in the battery pack is increased, the distance between the channels for fluid flow and any position in the battery pack is reduced within a certain range, and when temperature control fluid is conveyed in the fluid channels in the battery pack, the temperature control treatment can be effectively and rapidly carried out in the battery pack.
Description
Technical Field
The invention relates to the technical field of thermal management of battery packs, in particular to a thermal management device of a lithium ion battery pack.
Background
The battery thermal management is based on the optimal charge-discharge temperature interval of a specific battery according to the influence of temperature on the battery performance and combining the electrochemical characteristics and the heat generation mechanism of the battery, and solves the problem of heat dissipation or thermal runaway caused by the operation of the battery under the condition of overhigh or overlow temperature so as to improve the overall performance of the battery.
The power energy source of the new energy automobile is a battery module installed in an automobile chassis, the temperature of the battery module can be increased after one end of operation is carried out for a long time, the temperature increase range is higher in hot weather, the battery is affected by low-temperature environment in severe cold weather, the service performance of the battery can be directly reduced, the battery is thermally managed and used in the new energy automobile, the operation capacity of the automobile battery can be improved, and the operation safety of the automobile battery is improved.
The battery module at present is formed by square group battery combination, battery module's heat dissipation includes forced air cooling heat dissipation and liquid cooling heat dissipation, forced air cooling heat dissipation is installed the radiator fan in battery module's vertical or lateral direction and is dispelled the heat, liquid cooling heat dissipation is at battery module's surface arrangement liquid cooling pipeline, utilize low temperature fluid to block up battery module and dispel the heat, battery module is in the low temperature state then in carrying battery module with the heat that the internal-combustion engine produced, carry out preheating treatment, but current battery module's combination mode is difficult to adopt above-mentioned control by temperature change mode to carry out high efficiency control by temperature change processing to battery module's inside, therefore current new energy battery is when the operation, the control by temperature change effect is not good, in severe cold weather, automobile battery's performance decline is comparatively obvious.
Disclosure of Invention
In order to solve the problems that the combination mode of the existing battery module is difficult to carry out high-efficiency temperature control treatment on the inside of the battery module, so that the temperature control effect is poor when the existing new energy battery is operated, and the service performance of the automobile battery is obviously reduced in severe cold weather, the invention is realized by the following technical scheme: the heat management device of the lithium ion battery pack comprises a battery box and a battery pack, wherein the battery pack is formed by combining two groups of identical battery modules, the battery modules are formed by a plurality of U-shaped structures, the U-shaped structures comprise two groups of side parts and a plurality of groups of middle parts, and the structural design of the battery modules can be used for installing a heat-conducting fluid channel structure in the battery pack when the battery pack is assembled, and meanwhile, the area of the heat-conducting fluid channel structure is increased;
a heat conduction interlayer is arranged between two groups of battery modules in the battery pack and used for controlling and managing the temperature inside the battery pack, a plurality of groups of battery packs are arranged in a row, and heat conduction separators are arranged between the battery packs and the inner wall of the battery box and between the battery packs in adjacent rows and used for controlling and managing the temperature of the side surfaces of the battery packs;
the heat conduction interlayer and the heat conduction interlayer are internally provided with fluid channels.
Further, two side parts in the battery module are longer and shorter, the shorter side parts are the same as the middle part, and the longer side parts are more than the middle part by the width of the bottom edge of the battery module;
the two adjacent groups of battery packs in the same row are symmetrically distributed along the contact surface, the fluid channels inside the heat conduction interlayer in the two adjacent groups of battery packs are communicated, and the heat conduction interlayer in the plurality of groups of battery packs can be connected and combined together by the structural design of the battery module when the plurality of groups of battery packs are arranged in the same row, so that the interlayer between the adjacent battery packs is reduced, and the arrangement compactness of the battery packs is improved.
Still include, air-supply line one and air-supply line two, all be equipped with air pump equipment in air-supply line one and the air-supply line two, air-supply line one is the cooling tuber pipe, can with battery box external environment's air intercommunication, also can be connected with air refrigeration plant, air-supply line two is the hot-blast pipe, can be connected with the hot air-out tuber pipe of automobile internal-combustion engine, also can be connected with air heating equipment, air-supply line one and air-supply line two can with heat conduction interlayer and heat conduction baffle's inside intercommunication, air-supply line one and air-supply line two are close to the one end of battery box is equipped with the regulation and control case of regulation cooling air and hot-blast mixed flow, can avoid the hot air directly to carry out high temperature preheating to the group battery, is favorable to reducing the security risk that the group battery preheated.
Further, the heat conducting interlayer and the heat conducting interlayer are internally provided with a plurality of flow channels, so that fluid can uniformly flow through the inner side surface of the battery module.
Further, a regulating chamber is arranged in the regulating box, a disc-shaped outer disc is fixedly arranged in the regulating chamber, an air inlet I and an air outlet I are formed in the surface of the outer disc, and the air inlet I is communicated with the air inlet pipe I;
an inner disc is rotatably arranged in the outer disc, a motor module for controlling the inner disc to rotate is arranged in the regulating chamber, the outer surface of the inner disc is attached to the inner surface of the outer disc, an air inlet II and an air outlet II are formed in the surface of the inner disc, the air inlet II corresponds to the air inlet I, and the air outlet II corresponds to the air outlet I;
the side surface of the inner disc, which is close to one side of the air inlet pipe II, is eccentrically provided with a mixed flow port, one end of the air inlet pipe II, which is positioned in the regulating and controlling box, is communicated with a guide pipe, a port, which is far away from one end of the air inlet pipe II, is attached to the side surface of the inner disc, and the port is positioned on a circular track, which is formed by the mixed flow port and rotates along the axis of the inner disc.
By rotating the inner disk, the low-temperature air can be independently conveyed into the battery box, or the mixed low-temperature air and high-temperature air can be conveyed into the battery box.
Furthermore, the regulating box is internally provided with a flow mixing chamber, the flow mixing chamber is communicated with the air outlet, a guide plate is arranged in the flow mixing chamber, and a plurality of guide plates are combined to form a U-shaped channel for improving the mixing effect of low-temperature air and high-temperature air.
Further, be equipped with the reposition of redundant personnel case between the regulation and control case with the battery case, mix the flow room with be equipped with the connector between the reposition of redundant personnel case, the reposition of redundant personnel case with be equipped with a plurality of connection pipes between the battery case, a plurality of connect the siphunculus respectively with a plurality of heat conduction interlayer and heat conduction baffle switch-on, the battery case is inside to be equipped with the air-out board with one side that the group battery kept away from the connection pipe, the outside of air-out board is equipped with the heating panel, the side and the battery case fixed connection of heating panel for with the reposition of redundant personnel of accuse temperature air carry a plurality of connect in the siphunculus.
Further, a pressure plate is arranged in the shunt box, side pressing plates are arranged on the pressure plate in a sliding and sealing mode along two side edges of the distribution direction of the connecting pipes, a plurality of blocking plates are rotatably arranged on the surface of the pressure plate or the surface of the side pressing plate, and the blocking plates correspond to the connecting pipes;
and a linkage assembly for triggering the pressure plate to be pressed and moved is arranged between the side pressure plate and the pressure plate.
The side pressure plate and the pressure plate are combined, so that the pressure intensity in the space of the pressure plate and the side pressure plate far away from one side of the connecting pipe is approximately the same, and the air flow velocity and the air flow rate entering the connecting pipes are approximately the same.
Further, the linkage assembly includes:
the support is fixedly arranged on the inner surface of the shunt box, a plurality of groups of support are distributed at the positions where the two groups of side pressing plates are connected with the pressure plates, and a cavity is formed in the support;
the guide rod is fixedly arranged on the surface of the pressure plate and extends into the cavity in the support;
the stop block is slidably mounted in the support along the vertical direction of the guide rod body, a guide pillar is arranged on the side surface of the stop block, an adjusting groove is formed in the side surface of one end of the side pressing plate, which penetrates through the pressure plate, the adjusting groove is a chute, and the guide pillar is located in the adjusting groove.
The linkage assembly is designed, and after the side pressure plate is pressed and moved, the movement restriction of the pressure plate can be relieved through the linkage assembly, so that the pressure plate is pressed and moved, and the pressure in the space, away from the connecting pipe, of the pressure plate and the side pressure plate can be ensured to be approximately the same.
Further, be equipped with the elasticity pillar between pressure board and the side pressure board with the internal surface of reposition of redundant personnel case, the elasticity pillar is installed inside the cylinder, through the inside atmospheric pressure intensity of cylinder in the regulation elasticity pillar, can adjust the velocity of flow in the control by temperature change air admission joint pipe.
Further, the battery pack thermal management device further comprises a temperature sensor and a controller, wherein the temperature sensor is arranged on the surface of the battery pack in the battery box, and the controller is used for receiving a temperature monitoring signal of the temperature sensor and controlling the starting and stopping of the air pump equipment in the first air inlet pipe and the second air inlet pipe and the starting and stopping of the motor module in the control box.
Compared with the prior art, the invention has the following beneficial effects:
according to the lithium ion battery pack heat management device, through the U-shaped combined design of the two battery modules in the battery pack, the channels for fluid flow can be arranged in the battery pack, meanwhile, the heat dissipation area in the battery pack is increased, the distance between the channels for fluid flow and any position in the battery pack is reduced within a certain range, when temperature control fluid is conveyed in the fluid channels in the battery pack, the temperature control treatment can be effectively and rapidly carried out in the battery pack, the heat management effect in the battery pack is good, meanwhile, the combination and collocation of any two battery modules can be realized through the design of the battery modules, and the universality of the battery modules is improved.
Drawings
FIG. 1 is a schematic diagram of a thermal management device assembly of a battery pack according to the present invention;
FIG. 2 is a schematic view of a battery pack assembly structure according to the present invention;
FIG. 3 is a schematic view illustrating an internal structure of a thermal management device of a battery pack according to the present invention;
FIG. 4 is a schematic view of the internal structure of the control box of the present invention;
FIG. 5 is a side view of the inner structure of the outer and inner disks of the present invention;
FIG. 6 is a top view of the internal structure of the manifold of the present invention;
FIG. 7 is a schematic view of the structure of FIG. 6A according to the present invention;
FIG. 8 is a schematic view of the internal cross-sectional structure of a thermally conductive separator plate of the present invention;
fig. 9 is a schematic view showing an arrangement and combination structure of cylindrical battery cells in the battery module according to the present invention;
fig. 10 is a perspective view illustrating an assembled structure of cylindrical battery cells in the battery module according to the present invention;
fig. 11 is a schematic view showing the structure of an array of regular polygonal battery cells in the battery module according to the present invention.
In the figure: 1. a battery box; 11. a heat dissipation plate; 2. a battery pack; 21. a battery module; 211. a side portion; 212. an intermediate portion; 3. a thermally conductive barrier; 4. a thermally conductive separator plate; 41. an air outlet plate; 5. a flow passage; 6. an air inlet pipe I; 7. an air inlet pipe II; 71. a conduit; 8. a control box; 81. a regulation chamber; 811. a motor module; 82. a mixing chamber; 821. a deflector; 83. a connection port; 9. an outer disk; 91. an air inlet I; 92. an air outlet I; 10. an inner disk; 101. an air inlet II; 102. an air outlet II; 103. a mixing port; 12. a shunt box; 121. a pressure plate; 1211. a closure plate; 122. a side pressure plate; 123. a connecting pipe; 124. an elastic support; 13. a support; 131. a guide rod; 132. a stop block; 133. and an adjusting groove.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
An embodiment of the lithium ion battery pack thermal management device is as follows:
embodiment one: referring to fig. 1-3 and fig. 8-11, a thermal management device for a lithium ion battery pack includes a battery box 1 and a battery pack 2, the battery pack 2 is formed by combining two identical battery modules 21, the battery modules 21 are formed by a plurality of U-shaped structures, the plurality of U-shaped structures include two groups of side portions 211 and a plurality of groups of middle portions 212, the battery modules 21 are formed by arranging a plurality of battery cells, the cross-sectional shapes of the battery cells are circular or regular polygons, the battery modules 21 with the plurality of U-shaped structures are formed by arranging the battery cells in a combined manner, and the structural design of the battery modules 21 can be used for installing a heat-conducting fluid channel structure inside the battery pack 2 when the battery pack 2 is assembled, and meanwhile, the area of the heat-conducting fluid channel structure is increased.
The heat conduction interlayer 3 is arranged between two groups of battery modules 21 in the battery pack 2 and used for controlling and managing the temperature inside the battery pack 2, a plurality of groups of battery packs 2 are arranged in a row, and heat conduction separators 4 are arranged between the battery packs 2 and the inner wall of the battery box 1 and between the battery packs 2 in the adjacent row and used for controlling and managing the temperature of the side surfaces of the battery packs 2.
The two side portions 211 of the battery module 21 are longer and shorter, the shorter side portions 211 are longer than the middle portion 212, and the longer side portions 211 are one more width of the bottom edge of the battery module 21 than the middle portion 212.
The two adjacent battery packs 2 in the same row are symmetrically distributed along the contact surface, the fluid channels inside the heat conduction interlayer 3 in the two adjacent battery packs 2 are communicated, and the structural design of the battery module 21 can enable the heat conduction interlayer 3 in the plurality of battery packs 2 to be connected and combined together when the plurality of battery packs 2 are arranged in the same row, thereby being beneficial to reducing the interlayer between the adjacent battery packs 2 and improving the arrangement compactness of the battery packs 2.
The heat conduction interlayer 3 and the heat conduction separator 4 are internally provided with fluid channels, and the heat conduction interlayer 3 and the heat conduction separator 4 are internally provided with a plurality of flow channels 5, so that fluid can uniformly flow through the inner side surfaces of the battery modules 21.
Embodiment two: referring to fig. 1, 3-5, a thermal management device for a lithium ion battery pack includes a battery box 1 and a battery pack 2, the battery pack 2 is formed by combining two identical battery modules 21, the battery modules 21 are formed by a plurality of U-shaped structures, the plurality of U-shaped structures include two groups of side portions 211 and a plurality of groups of middle portions 212, and the structural design of the battery modules 21 can be used for installing a heat-conducting fluid channel structure inside the battery pack 2 when the battery pack 2 is assembled, and meanwhile, the area of the heat-conducting fluid channel structure is increased.
A heat conduction interlayer 3 is arranged between two groups of battery modules 21 in the battery packs 2 and used for controlling and managing the temperature inside the battery packs 2, a plurality of groups of battery packs 2 are arranged in a row, and heat conduction separators 4 are arranged between the battery packs 2 and the inner wall of the battery box 1 and between the battery packs 2 in the adjacent row and used for controlling and managing the temperature of the side surfaces of the battery packs 2; the heat conduction interlayer 3 and the heat conduction interlayer 4 are internally provided with fluid channels.
The air inlet pipe I6 and the air inlet pipe II 7 are respectively provided with air pump equipment, the air inlet pipe I6 and the air inlet pipe II 7 are internally provided with air pump equipment, the air inlet pipe I6 is a cooling air pipe and can be communicated with air in the external environment of the battery box 1, the air inlet pipe II 7 is a hot air pipe and can be connected with a hot air outlet pipe of an automobile internal combustion engine and also can be connected with air heating equipment, the air inlet pipe I6 and the air inlet pipe II 7 can be communicated with the inside of the heat conducting interlayer 3 and the heat conducting partition plate 4, one ends, close to the battery box 1, of the air inlet pipe I6 and the air inlet pipe II 7 are provided with a regulating box 8 for regulating mixed flows of cooling air and hot air, so that the hot air can be prevented from directly preheating the battery pack 2 at a high temperature, and the safety risk of preheating the battery pack 2 can be reduced.
A regulating chamber 81 is arranged in the regulating box 8, a disc-shaped outer disc 9 is fixedly arranged in the regulating chamber 81, an air inlet I91 and an air outlet I92 are formed in the surface of the outer disc 9, and the air inlet I91 is communicated with the air inlet pipe I6; the inner disc 10 is rotatably arranged in the outer disc 9, a motor module 811 for controlling the inner disc 10 to rotate is arranged in the regulating and controlling chamber 81, the outer surface of the inner disc 10 is attached to the inner surface of the outer disc 9, the surface of the inner disc 10 is provided with an air inlet II 101 and an air outlet II 102, the air inlet II 101 corresponds to the air inlet I91, and the air outlet II 102 corresponds to the air outlet I92.
The side surface of the inner disc 10, which is close to one side of the air inlet pipe II 7, is eccentrically provided with a mixed flow port 103, one end of the air inlet pipe II 7, which is positioned in the regulating and controlling box 8, is communicated with a guide pipe 71, a port, which is far away from one end of the air inlet pipe II 7, of the guide pipe 71 is attached to the side surface of the inner disc 10, the port is positioned on a circular track, which is formed by rotating the mixed flow port 103 along the axis of the inner disc 10, and low-temperature air can be independently conveyed into the battery box 1 or mixed low-temperature air and high-temperature air can be conveyed into the battery box 1 through rotating the inner disc 10.
The regulating box 8 is internally provided with a mixed flow chamber 82, the mixed flow chamber 82 is communicated with an air outlet I92, the inside of the mixed flow chamber 82 is provided with guide plates 821, and a plurality of guide plates 821 are combined to form a U-shaped channel for improving the mixing effect of low-temperature air and high-temperature air.
The battery pack thermal management device further comprises a temperature sensor and a controller, wherein the temperature sensor is arranged on the surface of the battery pack 2 in the battery box 1, and the controller is used for receiving temperature monitoring signals of the temperature sensor and controlling the starting and stopping of the air pump equipment in the first air inlet pipe 6 and the second air inlet pipe 7 and the starting and stopping of the motor module 811 in the control box 8.
Embodiment III: referring to fig. 1, 3 and 6-7, a thermal management device for a lithium ion battery pack includes a battery box 1 and a battery pack 2, the battery pack 2 is formed by combining two identical battery modules 21, the battery modules 21 are formed by a plurality of U-shaped structures, the plurality of U-shaped structures include two sets of side portions 211 and a plurality of sets of middle portions 212, and the structural design of the battery modules 21 can be used for installing a heat-conducting fluid channel structure inside the battery pack 2 when the battery pack 2 is assembled, and meanwhile, the area of the heat-conducting fluid channel structure is increased.
A heat conduction interlayer 3 is arranged between two groups of battery modules 21 in the battery packs 2 and used for controlling and managing the temperature inside the battery packs 2, a plurality of groups of battery packs 2 are arranged in a row, and heat conduction separators 4 are arranged between the battery packs 2 and the inner wall of the battery box 1 and between the battery packs 2 in the adjacent row and used for controlling and managing the temperature of the side surfaces of the battery packs 2; the heat conduction interlayer 3 and the heat conduction interlayer 4 are internally provided with fluid channels.
Still include, air-supply line one 6 and air-supply line two 7, the one end that air-supply line one 6 and air-supply line two 7 are close to battery box 1 is equipped with the regulation and control case 8 of adjusting cooling air and hot-blast mixed flow, can avoid the hot air to directly preheat group battery 2 high temperature, is favorable to reducing the security risk that group battery 2 preheated.
Be equipped with reposition of redundant personnel case 12 between regulation and control case 8 and the battery case 1, be equipped with connector 83 between mixed flow room 82 and the reposition of redundant personnel case 12, be equipped with a plurality of connection pipes 123 between reposition of redundant personnel case 12 and the battery case 1, a plurality of connection pipes 123 switch on with a plurality of heat conduction interlayer 3 and heat conduction baffle 4 respectively, the inside side that is kept away from the connection pipe 123 of battery pack 2 of same row of battery case 1 is equipped with out aerofoil 41, the outside of out aerofoil 41 is equipped with heating panel 11, the side and the battery case 1 fixed connection of heating panel 11 for with the reposition of redundant personnel of accuse temperature air carry in a plurality of connection pipes 123.
The inside of the shunt box 12 is provided with a pressure plate 121, side pressing plates 122 are arranged on the two side edges of the pressure plate 121 along the distribution direction of the plurality of connecting pipes 123 in a sliding and sealing mode, a plurality of blocking plates 1211 are rotatably arranged on the surface of the pressure plate 121 or the surface of the side pressing plates 122, and the blocking plates 1211 correspond to the connecting pipes 123; a linkage assembly for triggering the pressure plate 121 to move under pressure by the side pressure plate 122 is arranged between the side pressure plate 122 and the pressure plate 121.
The linkage assembly includes: the multiple groups of supports 13 are fixedly arranged on the inner surface of the shunt box 12, the multiple groups of supports 13 are distributed at the positions where the two groups of side pressure plates 122 are connected with the pressure plates 121, and a cavity is formed in the supports 13; a guide rod 131 fixedly installed on the surface of the pressure plate 121, the guide rod 131 extending into the cavity inside the support 13.
The stop block 132 is slidably mounted in the support 13 along the vertical direction of the rod body of the guide rod 131, a guide pillar is arranged on the side surface of the stop block 132, an adjusting groove 133 is formed in the side surface of one end of the side pressing plate 122 penetrating through the pressure plate 121, the adjusting groove 133 is a chute, and the guide pillar is located in the adjusting groove 133.
The linkage assembly is designed, when the side pressing plate 122 is pressed and moved, the movement restriction of the pressure plate 121 can be released through the linkage assembly, so that the pressure plate 121 is pressed and moved, and the pressure in the space of the side pressing plate 122 and the side pressing plate 121 far from the connecting pipe 123 can be ensured to be approximately the same.
The side pressure plate 122 and the pressure plate 121 are combined, so that the pressure in the space of the pressure plate 121 and the side pressure plate 122 away from the connecting pipe 123 is approximately the same, and the air flow rate entering the connecting pipes 123 are approximately the same.
Elastic support columns 124 are arranged between the pressure plates 121 and the side pressure plates 122 and the inner surface of the shunt box 12, the elastic support columns 124 are arranged inside the air cylinders, and the flow rate of temperature-controlled air entering the connecting pipe 123 can be adjusted by adjusting the air pressure intensity inside the air cylinders in the elastic support columns 123.
The working principle of the battery pack thermal management device is as follows:
before the battery pack 2 in the battery box 1 works, the battery pack 2 is installed in the battery box 1 according to the combination mode of the battery modules 21 and the arrangement mode of the battery pack 2 in fig. 1 and 2, the air inlet end of the air inlet pipe I6 can be communicated with the external air environment or communicated with air refrigerating equipment, and the air inlet pipe II 7 can be communicated with a hot exhaust pipe of an internal combustion engine of an automobile or communicated with special air heating equipment.
When the battery pack 2 in the battery box 1 is in operation, the temperature sensor on the surface of the battery pack 2 can monitor the temperature of the battery pack 2 in operation, and when the temperature of the battery pack 2 exceeds the set standard proper temperature range, the temperature sensor sends a monitoring signal to the controller, and the controller controls the air pump equipment in the air inlet pipe I6 and/or the air inlet pipe II 7 to be started.
When the temperature inside the battery pack 2 is too high, only the air pump device inside the first air inlet pipe 6 is started at this time, the first air inlet pipe 6 can convey low-temperature air into the regulating box 8, at this time, the duct 71 and the mixing port 103 on the side surface of the inner disk 10 are in a non-contact state, and the low-temperature air can directly enter the mixing chamber 82 through the outer disk 9 and the inner disk 10 and enter the split box 12 through the connecting port 83.
The low-temperature air enters the split box 12, air pressure is generated on one side, away from the connecting pipe 123, of the pressure plate 121 and the side pressure plate 122 in the split box 12 until the air pressure pushes the side pressure plate 122 to move, and when the side pressure plate 122 moves, the stop block 132 is driven to move through the cooperation of the adjusting groove 133 and the guide post on the side surface of the stop block 132, so that the stop block 132 is separated from the guide rod 131, at the moment, the movement of the pressure plate 121 is not limited any more, and the pressure plate 121 and the side pressure plate 122 move towards the direction of the connecting pipe 123.
The final connecting pipe 123 is in contact with the pressure plate 121 or the blocking plate 1211 on the surface of the side pressure plate 122, and pushes away the blocking plate 1211, at this time, the low-temperature air is split into a plurality of connecting pipes 123, and then enters the heat conducting interlayer 3 and the heat conducting separator 4, the low-temperature air flows in a plurality of flow channels 5 in the heat conducting interlayer 3 and the heat conducting separator 4, and the heat generated by the battery module 21 is taken away, so that the overall temperature of the battery pack 2 is subjected to heat dissipation and temperature reduction treatment, and the battery pack 2 is kept in a proper operating temperature environment.
When the temperature inside the battery pack 2 is too low, the air pump devices in the first air inlet pipe 6 and the second air inlet pipe 7 are started at the moment, the motor module 811 is controlled to be started, the motor module 811 is used for driving the inner disc 10 to rotate, the overlapping caliber of the second air inlet 101 and the first air inlet 91 is reduced, meanwhile, the guide pipe 71 is communicated with the mixed flow port 103, the motor module 811 is controlled to drive the rotating angle of the inner disc 10, the size of the overlapping caliber of the guide pipe 71 and the mixed flow port 103 can be adjusted, so that the mixing ratio of low-temperature air and high-temperature air is controlled, and the air temperature after the low-temperature air and the high-temperature air are mixed is controlled.
The low-temperature air and the high-temperature air enter the mixed flow chamber 82 through the air outlet II 102 and the air outlet I92, when the air flows in a channel formed by the guide plates 821, the low-temperature air and the high-temperature air are fully mixed, the mixed air enters the heat conducting interlayer 3 and the heat conducting partition plate 4 through the flow dividing box 12, so that the battery module 21 can be preheated, and after the battery pack 2 is restored to a proper operating temperature, the controller controls the air pump equipment in the air inlet pipe I6 and the air inlet pipe II 7 to be closed.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (10)
1. The utility model provides a lithium ion battery group thermal management device, includes battery box (1) and group battery (2), its characterized in that: the battery pack (2) is formed by combining two identical battery modules (21), the battery modules (21) are formed by a plurality of U-shaped structures, and the U-shaped structures comprise two groups of edge parts (211) and a plurality of groups of middle parts (212);
a heat conduction interlayer (3) is arranged between two groups of battery modules (21) in the battery pack (2), a plurality of groups of battery packs (2) are arranged in a row, and heat conduction interlayers (4) are arranged between the battery packs (2) and the inner wall of the battery box (1) and between the battery packs (2) in adjacent rows;
the heat conduction interlayer (3) and the heat conduction interlayer (4) are internally provided with fluid channels.
2. The lithium ion battery pack thermal management device according to claim 1, wherein two side portions (211) of the battery modules (21) are longer and shorter, the shorter side portions (211) are the same length as the middle portion (212), and the longer side portions (211) are one more width of the bottom side of the battery module (21) than the middle portion (212);
two adjacent groups of battery packs (2) in the same row are symmetrically distributed along the contact surface, and fluid channels inside the heat conducting interlayer (3) in the two adjacent groups of battery packs (2) are communicated.
3. The lithium ion battery pack thermal management apparatus of claim 1 or 2, further comprising: air-supply line one (6) and air-supply line two (7), air-supply line one (6) are the cooling tuber pipe, air-supply line two (7) are the hot-blast main, air-supply line one (6) and air-supply line two (7) can with the inside intercommunication of heat conduction interlayer (3) and heat conduction baffle (4), air-supply line one (6) and air-supply line two (7) are close to one end of battery case (1) is equipped with regulation and control case (8) of regulation cooling air and hot-blast mixed flow.
4. A lithium ion battery pack thermal management device according to claim 3, wherein the thermally conductive barrier (3) and the thermally conductive barrier (4) are internally provided with a plurality of flow channels (5).
5. A lithium ion battery pack thermal management device according to claim 3, wherein a regulating chamber (81) is arranged in the regulating box (8), a disc-shaped outer disc (9) is fixedly arranged in the regulating chamber (81), an air inlet I (91) and an air outlet I (92) are formed in the surface of the outer disc (9), and the air inlet I (91) is communicated with the air inlet pipe I (6);
an inner disc (10) is rotatably arranged in the outer disc (9), the outer surface of the inner disc (10) is attached to the inner surface of the outer disc (9), an air inlet II (101) and an air outlet II (102) are formed in the surface of the inner disc (10), the air inlet II (101) corresponds to the air inlet I (91), and the air outlet II (102) corresponds to the air outlet I (92);
the utility model discloses a water heater, including inner disc (10), air-supply line (7), inner disc (10) are close to the lateral surface eccentric formula of seting up of air-supply line two (7) one side has mixed flow mouth (103), air-supply line two (7) are located one end switch-on of regulation and control case (8) inside has pipe (71), pipe (71) keep away from the port laminating of air-supply line two (7) one end is in the lateral surface of inner disc (10), the port is located mix flow mouth (103) are followed on the circular orbit of inner disc (10) axle center pivoted.
6. The lithium ion battery pack thermal management device according to claim 5, wherein a mixed flow chamber (82) is arranged inside the regulating box (8), the mixed flow chamber (82) is communicated with the air outlet I (92), a guide plate (821) is arranged inside the mixed flow chamber (82), and a plurality of guide plates (821) are combined to form a U-shaped channel.
7. The lithium ion battery pack thermal management device according to claim 6, wherein a split flow box (12) is arranged between the regulating box (8) and the battery box (1), a connection port (83) is arranged between the mixed flow chamber (82) and the split flow box (12), a plurality of connection pipes (123) are arranged between the split flow box (12) and the battery box (1), and the plurality of connection pipes (123) are respectively communicated with the plurality of heat conducting interlayer (3) and the heat conducting partition plate (4).
8. The lithium ion battery pack thermal management device according to claim 7, wherein a pressure plate (121) is arranged in the shunt box (12), side pressing plates (122) are mounted on two side edges of the pressure plate (121) along the distribution direction of the plurality of connecting pipes (123) in a sliding and sealing mode, a plurality of blocking plates (1211) are mounted on the surface of the pressure plate (121) or the surface of the side pressing plate (122) in a rotating mode, and the blocking plates (1211) correspond to the connecting pipes (123);
and a linkage assembly for triggering the pressure plate (121) to move under pressure is arranged between the side pressure plate (122) and the pressure plate (121).
9. The lithium ion battery pack thermal management apparatus of claim 8, wherein the linkage assembly comprises:
the multiple groups of supports (13) are fixedly arranged on the inner surface of the distribution box (12), the multiple groups of supports (13) are distributed at the positions where the two groups of side pressure plates (122) are connected with the pressure plates (121), and a cavity is formed in the supports (13);
a guide rod (131) fixedly mounted on the surface of the pressure plate (121), the guide rod (131) extending into a cavity inside the support (13);
the stop block (132) is slidably mounted in the support (13) along the vertical direction of the rod body of the guide rod (131), a guide pillar is arranged on the side surface of the stop block (132), an adjusting groove (133) is formed in the side surface of one end of the side pressure plate (122) penetrating through the pressure plate (121), the adjusting groove (133) is a chute, and the guide pillar is located in the adjusting groove (133).
10. The lithium ion battery pack thermal management device according to claim 8, wherein elastic struts (124) are provided between the pressure plate (121) and the side pressure plate (122) and the inner surface of the split case (12), and the elastic struts (124) are installed inside the cylinder.
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| CN202310831363.9A CN116544562B (en) | 2023-07-07 | 2023-07-07 | Lithium ion battery pack thermal management device |
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| CN202310831363.9A CN116544562B (en) | 2023-07-07 | 2023-07-07 | Lithium ion battery pack thermal management device |
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| CN112886098A (en) * | 2021-03-05 | 2021-06-01 | 上海工程技术大学 | Energy storage battery combined cooling device |
| CN113745691A (en) * | 2021-08-12 | 2021-12-03 | 海南大学 | Heat dissipation type multi-cooling chassis of new energy automobile |
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| KR20120096133A (en) * | 2011-02-22 | 2012-08-30 | 주식회사 엘지화학 | Cooling member of improved cooling efficiency and battery module employed with the same |
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| CN116544562B (en) | 2023-10-13 |
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