CN113644336A - Battery box and battery pack with same - Google Patents
Battery box and battery pack with same Download PDFInfo
- Publication number
- CN113644336A CN113644336A CN202010339067.3A CN202010339067A CN113644336A CN 113644336 A CN113644336 A CN 113644336A CN 202010339067 A CN202010339067 A CN 202010339067A CN 113644336 A CN113644336 A CN 113644336A
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- liquid
- tray
- inlet
- cooling plate
- outlet
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- 239000007788 liquid Substances 0.000 claims abstract description 265
- 238000001816 cooling Methods 0.000 claims abstract description 129
- 230000008676 import Effects 0.000 claims abstract description 3
- 239000003292 glue Substances 0.000 claims description 3
- 230000008878 coupling Effects 0.000 abstract description 22
- 238000010168 coupling process Methods 0.000 abstract description 22
- 238000005859 coupling reaction Methods 0.000 abstract description 22
- 238000006073 displacement reaction Methods 0.000 abstract description 6
- 230000003993 interaction Effects 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 4
- 238000003466 welding Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000005728 strengthening Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 206010011469 Crying Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a battery box and a battery pack with the same, comprising: the tray is provided with a tray edge beam, and a liquid inlet and a liquid outlet are formed on the tray edge beam; the liquid cooling plate is connected to the bottom of the tray, the liquid cooling plate and the tray jointly define a containing cavity for containing the plurality of electric cores, and a liquid cooling plate inlet and a liquid cooling plate outlet are formed in the liquid cooling plate; first coupling hose and second coupling hose, first coupling hose are used for connecting between liquid cooling plate import and inlet, and second coupling hose is used for connecting between liquid cooling plate export and liquid outlet. According to the battery pack, the first connecting hose and the second connecting hose can absorb relative displacement generated by the liquid inlet, the liquid outlet and the liquid cooling plate in a vibration environment, and the liquid cooling plate is prevented from forming an interaction force on the liquid inlet and the liquid outlet under a vibration condition, so that the sealing performance of the battery pack can be effectively ensured, and the precision requirement of the battery pack in an assembly link is reduced.
Description
Technical Field
The invention relates to the technical field of battery manufacturing, in particular to a battery box and a battery pack with the same.
Background
The liquid cooling plate is a device used for adjusting the temperature of the battery cell in the battery pack. The liquid cooling plate is generally arranged at the top or the bottom of the battery cell in the tray of the battery pack, and the heat energy transfer is accelerated through the flow of liquid in the liquid cooling plate, so that the heating and cooling requirements of the battery cell are met.
In the related art, a liquid inlet pipe and a liquid outlet pipe of a tray are connected with a tray edge beam on the side surface of the tray in a welding mode so as to ensure the sealing performance of a battery pack. However, the liquid inlet pipe and the liquid outlet pipe are welded above the liquid cooling plate, so that the liquid cooling plate and the tray cannot be separated. Simultaneously, the feed liquor pipe and the drain pipe of tray produce the welding slag easily and splash when welding with the tray boundary beam, can not be too near from electric core during the welding, and need carry out the gas tightness after the welding and detect, so this welding process needs accomplish before the workshop section is joined in marriage to the battery package to the assembly of giving the battery package has brought inconveniently, and the tray boundary beam has hindered the laser welding of the electric core in the battery package simultaneously.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a battery box, which can absorb the relative displacement between the liquid inlet and the liquid outlet and the liquid cooling plate in the vibration environment, and reduce the precision requirement of the battery pack in the assembly process.
Another object of the present invention is to provide a battery pack having the battery box.
According to a first aspect of the embodiment of the present invention, a battery pack includes: the tray is provided with a tray edge beam, and a liquid inlet and a liquid outlet are formed in the tray edge beam; the liquid cooling plate is connected to the bottom of the tray, a containing cavity for containing a plurality of electric cores is defined by the liquid cooling plate and the tray together, and an inlet and an outlet of the liquid cooling plate are formed in the liquid cooling plate; the liquid cooling plate comprises a liquid cooling plate inlet, a liquid outlet and a first connecting hose, wherein the liquid cooling plate inlet is communicated with the liquid inlet, the liquid cooling plate inlet is communicated with the liquid outlet, the first connecting hose is used for being connected between the liquid cooling plate inlet and the liquid inlet, and the second connecting hose is used for being connected between the liquid cooling plate outlet and the liquid outlet.
According to the battery pack provided by the embodiment of the invention, the first connecting hose is connected between the inlet and the liquid inlet of the liquid cooling plate, and the second connecting hose is connected between the outlet and the liquid outlet of the liquid cooling plate, so that the first connecting hose and the second connecting hose can absorb the relative displacement generated by the liquid inlet, the liquid outlet and the liquid cooling plate in a vibration environment, and the liquid cooling plate is prevented from forming an interaction force on the liquid inlet and the liquid outlet under a vibration condition, so that the sealing performance of the battery pack can be effectively ensured, and the precision requirement of the battery pack in an assembly link is reduced.
According to some embodiments of the present invention, two ends of the first connection hose are respectively provided with a first quick coupling for connecting with the inlet of the liquid cooling plate and the liquid inlet, and two ends of the second connection hose are respectively provided with a second quick coupling for connecting with the outlet of the liquid cooling plate and the liquid outlet.
According to some embodiments of the invention, the first quick connector and the second quick connector each comprise a male connector and a female connector that are removably connected; liquid pipes are respectively arranged at the liquid inlet and the liquid outlet, the cross section of one end of each liquid pipe is rectangular and is positioned in the accommodating cavity, the other end of each liquid pipe extends out of the accommodating cavity, and one of the male connector and the female connector is arranged on the side surface or the bottom surface of one end of each liquid pipe; one ends of the first and second connection hoses are provided with the other of the male and female connectors to be mated with the one of the male and female connectors on the liquid pipe.
According to some embodiments of the invention, when the one of the male connector and the female connector is provided on a side surface of the one end of the liquid pipe, the liquid inlet and the liquid cooling plate inlet are arranged to be staggered in a height direction of the tray, and the liquid outlet and the liquid cooling plate outlet are arranged to be staggered in the height direction of the tray.
According to some embodiments of the invention, a distance between the liquid inlet and the liquid outlet is greater than a distance between the liquid cooling plate inlet and the liquid cooling plate outlet.
According to some embodiments of the present invention, the liquid-cooled plate inlet and the liquid-cooled plate outlet are respectively provided with a liquid-cooled plate pipe section, the liquid-cooled plate pipe sections of the liquid-cooled plate inlet and the liquid-cooled plate outlet are both arranged on the upper surface of the liquid-cooled plate, and the liquid-cooled plate pipe section includes one of the male connector and the female connector; the other ends of the first and second connection hoses are provided with the other of the male and female connectors.
According to some embodiments of the invention, the cross-sectional shape of the other end of the liquid tube is circular.
According to some embodiments of the present invention, two ends of the first connection hose are respectively in threaded connection with the inlet of the liquid cooling plate and the liquid inlet, and two ends of the second connection hose are respectively in threaded connection with the outlet of the liquid cooling plate and the liquid outlet.
According to some embodiments of the invention, the first connection hose has first joints at both ends thereof, respectively, and the two first joints are different in shape; and two ends of the second connecting hose are respectively provided with a second joint, and the two second joints are different in shape.
According to some embodiments of the invention, the first and second connection hoses are both plastic hoses.
According to some embodiments of the present invention, a plurality of first connection holes are formed at intervals along a circumferential direction of the tray in a bottom surface of the tray, a plurality of second connection holes are formed in the liquid-cooling plate to be vertically opposite to the plurality of first connection holes, and a plurality of screw fasteners or rivets are inserted through the plurality of second connection holes and the plurality of first connection holes to connect the liquid-cooling plate to a bottom of the tray.
According to some embodiments of the invention, the bottom surface of the tray is formed with at least one groove extending annularly along a circumference of the tray, the groove being located radially inside the plurality of first connection holes, the groove being filled with glue to seal a gap between the tray and the liquid cooling plate.
According to some embodiments of the invention, the liquid inlet and the liquid outlet are located on one of the short sides of the tray, and the liquid-cooled plate inlet and the liquid-cooled plate outlet are located at one end of the liquid-cooled plate adjacent to the short side.
A battery pack according to an embodiment of the second aspect of the invention includes: a battery case according to the embodiment of the first aspect of the invention; the battery box comprises a plurality of battery cells, wherein the battery cells are arranged in a containing cavity of the battery box side by side.
According to some embodiments of the invention, both ends of all the cells extend along the width direction of the tray to be adjacent to both long sides of the tray.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a battery box according to an embodiment of the invention;
fig. 2 is a plan view of a battery case according to an embodiment of the present invention;
fig. 3 is an exploded view of a battery case according to an embodiment of the present invention;
fig. 4 is an exploded view of another angle of the battery box according to the embodiment of the present invention;
fig. 5 is an exploded view of a battery pack according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a battery pack according to an embodiment of the present invention;
fig. 7 is a top view of a battery pack according to an embodiment of the present invention.
Reference numerals:
100: a battery box;
1: a tray; 11: a pallet edge beam; 111: a liquid inlet; 112: a liquid outlet;
12: a liquid pipe; 13: a first connection hole; 14: a groove;
2: a liquid-cooled plate; 21: a liquid cooling plate inlet; 22: a liquid cooling plate outlet;
23: a liquid-cooled plate pipe section; 24: a second connection hole;
3: a first connecting hose; 31: a first joint;
4: a second connecting hose; 41: a second joint;
5: a first quick coupling; 6: a second quick coupling;
200: a battery pack; 201: and (5) battery cores.
Detailed Description
Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.
A battery case 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 7.
As shown in fig. 1 to 7, a battery box 100 according to an embodiment of the first aspect of the present invention includes a tray 1, a liquid-cooled panel 2, a first connection hose 3, and a second connection hose 4.
Specifically, the top and the bottom of the tray 1 are both open, the side of the tray 1 is provided with a tray edge beam 11, and the tray edge beam 11 is provided with a liquid inlet 111 and a liquid outlet 112. The liquid cooling plate 2 is connected to the bottom of the tray 1, and the liquid cooling plate 2 and the tray 1 together define a containing cavity for containing a plurality of battery cells 201, and in the description of the present invention, "a plurality" means two or more. The liquid cooling plate 2 is provided with a liquid cooling plate inlet 21 and a liquid cooling plate outlet 22, the first connecting hose 3 is used for connecting between the liquid cooling plate inlet 21 and the liquid inlet 111, and the second connecting hose 4 is used for connecting between the liquid cooling plate outlet 22 and the liquid outlet 112.
For example, in the examples of fig. 1 to 7, the liquid inlet 111 and the liquid outlet 112 are spaced apart from each other on the tray edge beam 11 on one side of the tray 1 in the length direction, the liquid cooling plate 2 is installed at the bottom of the tray 1, so that the bottom plate of the tray 1 can be replaced by the liquid cooling plate 2, the energy density of the battery pack 200 is improved, and the battery cell 201 can be placed on the liquid cooling plate 2 to be in direct contact with the liquid cooling plate 2, so that heat exchange with the liquid cooling plate 2 can be better performed. A containing cavity is defined between the liquid cooling plate 2 and the tray 1, a plurality of battery cells 201 are located in the containing cavity, and a side of the liquid cooling plate 2 adjacent to the liquid inlet 111 and the liquid outlet 112 of the tray edge beam 11 is provided with a liquid cooling plate inlet 21 and a liquid cooling plate outlet 22 which are spaced apart from each other. The inlet 21 and the inlet 111 of the liquid cooling plate are connected by a first connecting hose 3, and the outlet 22 and the outlet 112 of the liquid cooling plate are connected by a second connecting hose 4. Therefore, the first connecting hose 3 and the second connecting hose 4 are made of soft materials and can deform themselves, so that the first connecting hose 3 can absorb the relative displacement of the liquid inlet 111 and the inlet 21 of the liquid cooling plate generated in the vibration environment, and the second connecting hose 4 can absorb the relative displacement of the liquid outlet 112 and the liquid cold plate outlet 22 in the vibration environment, so that the liquid cooling plate 2 can be prevented from forming an interaction force on the liquid inlet 111 and the liquid outlet 112 under the vibration condition, thereby avoiding the problem of liquid leakage between the first connecting hose 3 and the liquid inlet 111 and the liquid cooling plate inlet 21, and between the second connecting hose 4 and the liquid outlet 112 and the liquid cooling plate outlet 22, meanwhile, the manufacturing tolerance and the assembly tolerance of the liquid cooling plate 2, the liquid inlet 111 and the liquid outlet 112 in the manufacturing process can be effectively absorbed, the assembly difficulty is reduced, poor assembly is reduced, and the precision requirement of the battery pack 100 in the assembly link can be reduced.
According to the battery box 100 provided by the embodiment of the invention, the first connecting hose 3 is connected between the inlet 21 and the liquid inlet 111 of the liquid cooling plate, the second connecting hose 4 is connected between the outlet 22 and the liquid outlet 112 of the liquid cooling plate, and the first connecting hose 3 and the second connecting hose 4 can absorb the relative displacement generated by the liquid inlet 111 and the liquid outlet 112 and the liquid cooling plate 2 in a vibration environment, so that the liquid cooling plate 2 is prevented from forming an interaction force on the liquid inlet 111 and the liquid outlet 112 under a vibration condition, the sealing performance of the battery box 100 can be effectively ensured, and the precision requirement of the battery box 100 in an assembly link is reduced.
According to some embodiments of the present invention, as shown in fig. 3 and 4, the first connection hose 3 is provided at both ends thereof with first quick connectors 5 for connecting with the liquid cooling plate inlet 21 and the liquid inlet 111, respectively, and the second connection hose 4 is provided at both ends thereof with second quick connectors 6 for connecting with the liquid cooling plate outlet 22 and the liquid outlet 112, respectively. From this, through setting up first quick-operation joint 5 respectively at the both ends of first coupling hose 3, the both ends of second coupling hose 4 set up second quick-operation joint 6 respectively, through quick-operation joint's switching, realized the purpose that tray 1 and liquid cooling board 2 can be separated, make tray 1 and liquid cooling board 2 can mutual independence, the part that is located tray boundary beam 11 simultaneously can weld in advance, the welded convenience has been improved, welded reliability and gas tightness have been ensured. Moreover, the difficulty of assembling the first connection hose 3 and the second connection hose 4 can be reduced, the assembling efficiency can be improved, and the yield of the battery box 100 can be improved. In addition, the first connection hose 3 and the second connection hose 4 may be deformed by themselves, so that the manufacturing tolerance and the assembly tolerance of the liquid cooling plate 2, the liquid inlet 111 and the liquid outlet 112 in the manufacturing process can be effectively absorbed. It is understood that the specific structure, operation principle, etc. of the first quick coupling 5 and the second quick coupling 6 are well known to those skilled in the art, and will not be described herein.
Further, referring to fig. 3 and 4, each of the first and second quick connectors 5 and 6 includes a male connector and a female connector detachably connected to each other, a liquid pipe 12 is disposed at the liquid inlet 111 and the liquid outlet 112, respectively, one end of the liquid pipe 12 has a rectangular cross-sectional shape and is located in the accommodating cavity, the other end of the liquid pipe 12 extends out of the accommodating cavity, one of the male connector and the female connector is disposed at a side surface or a bottom surface of the one end of the liquid pipe 12, and the other of the male connector and the female connector is disposed at one end of the first and second connection hoses 3 and 4 to be engaged with the one of the male connector and the female connector on the liquid pipe 12.
For example, in the example of fig. 3 and 4, the side of the end of the liquid tube 12 inside the receiving chamber may be provided with one of a male connector and a female connector, and the cross-sectional shape of the end is rectangular, thereby facilitating the assembly of the male connector or the female connector. When a male joint is arranged on the side surface of the one end of the liquid pipe 12, a female joint is arranged at one end of the first connecting hose 3 and the second connecting hose 4 connected with the liquid pipe 12; when the female connector is provided at the side of the one end of the liquid tube 12, the male connectors are provided at the ends of the first and second connection hoses 3 and 4 connected to the liquid tube 12. From this, through the cooperation of female joint and male joint, and male joint or female joint are connected with the one end of first coupling hose 3 and second coupling hose 4, can realize rapid Assembly, and because the leakproofness of first coupling hose 3 and second coupling hose 4 is good to can further solve the problem of the 6 weepings of first quick-operation joint 5 and second quick-operation joint because of the vibration leads to effectively.
In alternative embodiments, the cross-sectional shape of the other end of tube 12 is circular. As shown in fig. 4, the cross-sectional shape of the end of the liquid tube 12 remote from the center of the receiving chamber is circular. This is provided to facilitate connection of the liquid pipe 12 to a component outside the battery case 100.
In some alternative embodiments, referring to fig. 3 and 6, when the one end of the liquid pipe 12 is provided at a side thereof with the one of the male connector and the female connector, the liquid inlet 111 and the liquid-cooled plate inlet 21 are arranged to be staggered in a height direction of the tray 1, and the liquid outlet 112 and the liquid-cooled plate outlet 22 are arranged to be staggered in the height direction of the tray 1. For example, in the example of fig. 3 and 6, the liquid inlet 111 and the liquid-cooled plate inlet 21 are disposed not to face each other in the up-down direction, and the liquid outlet 112 and the liquid-cooled plate outlet 22 are disposed not to face each other in the up-down direction. Accordingly, the height of the tray side member 11 can be reduced, so that the height of the battery box 100 can be reduced, the battery box 100 can be miniaturized, and the first connection hose 3 and the second connection hose 4 can be easily attached and detached.
In some alternative embodiments, as shown in fig. 3 and 6, the distance between the inlet 111 and the outlet 112 is greater than the distance between the liquid-cooled plate inlet 21 and the liquid-cooled plate outlet 22. In other words, the liquid cooling plate inlet 21 and the liquid cooling plate outlet 22 are located between the liquid inlet 111 and the liquid outlet 112, so that the overall structure of the battery box 100 can be more compact, and it can be effectively ensured that the liquid in the liquid cooling plate 2 flows to the middle of the battery cell 201, the heat energy transfer of the liquid in the liquid cooling plate 2 is accelerated, and the heating and cooling effects of the battery pack 200 are improved.
According to some embodiments of the present invention, referring to fig. 6, the liquid cooling plate inlet 21 and the liquid cooling plate outlet 22 are respectively provided with a liquid cooling plate pipe section 23, the liquid cooling plate pipe sections 23 of the liquid cooling plate inlet 21 and the liquid cooling plate outlet 22 are both disposed on the upper surface of the liquid cooling plate 2, the liquid cooling plate pipe section 23 includes one of a male connector and a female connector, and the other end of the first connection hose 3 and the other end of the second connection hose 4 are provided with the other of the male connector and the female connector. From this, through setting up liquid cooling board pipe section 23, first connecting hose 3 and second connecting hose 4 can be connected with liquid cooling board import 21 and liquid cooling board export 22 through corresponding liquid cooling board pipe section 23 more conveniently, and have guaranteed the leakproofness of connecting.
For example, in the assembly process of the battery pack 200, the plurality of battery cells 201 may be assembled on the liquid cooling plate 2, and then the electrode terminals of the plurality of battery cells 5201 are laser-welded to the connecting sheet, so as to achieve electrical connection between the electrode terminals of the plurality of battery cells 201, and then the liquid cooling plate 2 is connected to the tray 1 through the first quick coupling 5 of the first connecting hose 3 and the second quick coupling 6 of the second connecting hose 4, so as to achieve detachable assembly of the tray 1 and the liquid cooling plate 2. From this, compare with traditional tray 1's feed liquor pipe and the mode of drain pipe welding on tray boundary beam 11, the connected mode of first quick-operation joint 5 and second quick-operation joint 6 has avoided inlet 111 and liquid outlet 112 and tray boundary beam 11 welding time to produce the welding slag and has splashed, reduce the pollution to holding the electric core 201 of intracavity, and simultaneously, both satisfied inlet 111 and liquid outlet 112 and tray 1's sealed demand, avoided tray 1 or liquid cooling board 2 too early intervention assembly process again and given the limitation that the process brought at the back. It is understood that the tray 1 and the liquid cooling plate 2 can be optimally assembled according to the actual assembly requirements of the battery pack 200.
According to other embodiments of the present invention, the two ends of the first connection hose 3 may be respectively connected to the inlet 21 and the inlet 111 of the liquid cooling plate, and the two ends of the second connection hose 4 are respectively connected to the outlet 22 and the outlet 112 of the liquid cooling plate. So set up, can realize the detachable assembly of tray 1 and liquid cooling board 2 equally, reduced the installation degree of difficulty of tray 1 and liquid cooling board 2, and simple structure, the processing of being convenient for, it is with low costs.
According to some embodiments of the present invention, referring to fig. 5, the first connection hose 3 has first joints 31 at both ends thereof, respectively, the two first joints 31 having different shapes, and the second connection hose 4 has second joints 41 at both ends thereof, respectively, the two second joints 41 having different shapes. So set up, can play the foolproof effect to first coupling hose 3 and second coupling hose 4 effectively, avoid appearing the condition of first coupling hose 3 and 4 assembly errors of second coupling hose.
Optionally, the first connection hose 3 and the second connection hose 4 are both plastic hoses. The plastic hose has the characteristics of good flexibility, strong corrosion resistance, high temperature resistance and the like, and meanwhile, the plastic hose can deform, so that the manufacturing tolerance and the assembly tolerance of the liquid inlet 111 and the liquid outlet 112 of the liquid cooling plate 2 and the tray 1 in the manufacturing process can be effectively absorbed.
According to some embodiments of the present invention, the bottom surface of the tray 1 is formed with a plurality of first connection holes 13 arranged at intervals in the circumferential direction of the tray 1. A plurality of second connection holes 24 are formed in the liquid cooling plate 2 to be vertically opposite to the plurality of first connection holes 13, and a plurality of screw fasteners (not shown) or rivets (not shown) are inserted through the plurality of second connection holes 24 and the plurality of first connection holes 13 to connect the liquid cooling plate 2 to the bottom of the tray 1. For example, as shown in fig. 3 to 5, the plurality of first connection holes 13 may be uniformly spaced along the circumferential direction of the bottom surface of the tray edge beam 11, the plurality of second connection holes 24 may be uniformly spaced along the circumferential direction of the edge of the bottom surface of the liquid cooling plate 2, the plurality of first connection holes 13 and the plurality of second connection holes 24 are in one-to-one correspondence from top to bottom, and the connection between the tray 1 and the liquid cooling plate 2 may be achieved by inserting a plurality of rivets between the plurality of first connection holes 13 and the plurality of second connection holes 24. Therefore, the firmness of connection of the tray 1 and the liquid cooling plate 2 is ensured, and the tray 1 and the liquid cooling plate 2 are prevented from being separated in the use process of the battery box 100.
Further, the bottom surface of tray 1 is formed with at least one recess 14 along the annular extension of the circumference of tray 1, and recess 14 is located the radial inboard of a plurality of first connecting holes 13, and the encapsulating is in order to seal the clearance between tray 1 and the liquid cooling board 2 in the recess 14. For example, as shown in fig. 4, two grooves 14 extending annularly along the circumferential direction of the tray 1 are provided on the bottom surface of the tray 1, the two grooves 14 are provided at intervals in the radial direction of the tray 1, and the two grooves 14 are each located on the side of the plurality of first connection holes 13 facing the center of the tray 1. When the tray 1 and the liquid cooling plate 2 are installed, the gap between the tray 1 and the liquid cooling plate 2 can be sealed by glue pouring in the two grooves 14, so that the air tightness between the tray 1 and the liquid cooling plate 2 is ensured, and meanwhile, the stability of connection between the tray 1 and the liquid cooling plate 2 is further enhanced. It will be appreciated that the specific number of grooves 14 may be set according to actual design requirements to better meet practical applications.
Further, as shown in fig. 3 and 5, the liquid inlet 111 and the liquid outlet 112 are located on one of the short sides of the tray 1, and the liquid-cooled plate inlet 21 and the liquid-cooled plate outlet 22 are located at one end of the liquid-cooled plate 2 adjacent to the short side. With the arrangement, the lengths of the first connecting hose 3 and the second connecting hose 4 can be effectively shortened, and the layout regularity of parts in the battery box 100 can be ensured.
As shown in fig. 5 to 7, the battery pack 200 according to the embodiment of the second aspect of the present invention includes a battery box 100 and a plurality of battery cells 201, where the battery box 100 is the battery box 100 according to the embodiment of the first aspect of the present invention, and the plurality of battery cells 201 are arranged side by side in a receiving cavity of the battery box 100. From this, electric core 201 itself can be used as the crossbeam of strengthening battery package 200 structural strength, that is to say, need not to set up the additional strengthening who is used for strengthening its structural strength again in the battery package 200, directly through electric core 201 alright replace the additional strengthening to guarantee the structural strength of battery package 200, ensure that battery package 200 is difficult for taking place the deformation under the exogenic action.
In some alternative embodiments, referring to fig. 5 to 7, both ends of all the battery cells 201 extend to two long sides of the adjacent tray 1 along the width direction of the tray 1. For example, the tray 1 may have a rectangular frame structure, and when the two ends of all the battery cells 201 extend to two long edges of the tray 1 along the width direction of the tray 1, the surface area of the battery cells 201 is increased under the condition of constant volume, so that the heat dissipation area of the battery cells 201 is increased, the heat dissipation efficiency of the battery cells 201 is improved, the safety of the whole battery pack 200 is further improved, and the battery pack 200 is safer and more reliable.
Other constructions and operations of the battery pack 200 according to the embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (15)
1. A battery box, comprising:
the tray is provided with a tray edge beam, and a liquid inlet and a liquid outlet are formed in the tray edge beam;
the liquid cooling plate is connected to the bottom of the tray, a containing cavity for containing a plurality of electric cores is defined by the liquid cooling plate and the tray together, and an inlet and an outlet of the liquid cooling plate are formed in the liquid cooling plate;
the liquid cooling plate comprises a liquid cooling plate inlet, a liquid outlet and a first connecting hose, wherein the liquid cooling plate inlet is communicated with the liquid inlet, the liquid cooling plate inlet is communicated with the liquid outlet, the first connecting hose is used for being connected between the liquid cooling plate inlet and the liquid inlet, and the second connecting hose is used for being connected between the liquid cooling plate outlet and the liquid outlet.
2. The battery box of claim 1, wherein the first connection hose has a first quick connector at each end for connecting to the inlet of the liquid cooling plate and the liquid inlet, and the second connection hose has a second quick connector at each end for connecting to the outlet of the liquid cooling plate and the liquid outlet.
3. The battery box of claim 2, wherein the first and second quick connectors each comprise a male connector and a female connector that are removably connected;
liquid pipes are respectively arranged at the liquid inlet and the liquid outlet, the cross section of one end of each liquid pipe is rectangular and is positioned in the accommodating cavity, the other end of each liquid pipe extends out of the accommodating cavity, and one of the male connector and the female connector is arranged on the side surface or the bottom surface of one end of each liquid pipe;
one ends of the first and second connection hoses are provided with the other of the male and female connectors to be mated with the one of the male and female connectors on the liquid pipe.
4. The battery case according to claim 3, wherein when the one end of the liquid pipe is provided at a side thereof with the one of the male connector and the female connector,
the liquid inlet with the import of liquid cooling board is in the setting of staggering in the direction of height of tray, the liquid outlet with the export of liquid cooling board is in the setting of staggering in the direction of height of tray.
5. The battery box of claim 3, wherein a distance between the liquid inlet and the liquid outlet is greater than a distance between the liquid cold plate inlet and the liquid cold plate outlet.
6. The battery box of claim 3, wherein the liquid cold plate inlet and the liquid cold plate outlet are each provided with a liquid cold plate tube section, the liquid cold plate tube sections of the liquid cold plate inlet and the liquid cold plate outlet are both provided on an upper surface of the liquid cold plate, and the liquid cold plate tube section comprises one of the male connector and the female connector;
the other ends of the first and second connection hoses are provided with the other of the male and female connectors.
7. The battery case according to claim 3, wherein the other end of the liquid pipe has a circular cross-sectional shape.
8. The battery box of claim 1, wherein two ends of the first connection hose are respectively in threaded connection with the inlet of the liquid cooling plate and the liquid inlet, and two ends of the second connection hose are respectively in threaded connection with the outlet of the liquid cooling plate and the liquid outlet.
9. The battery box according to any one of claims 1 to 8, wherein both ends of the first connection hose respectively have first joints, and the two first joints are different in shape;
and two ends of the second connecting hose are respectively provided with a second joint, and the two second joints are different in shape.
10. The battery box according to any one of claims 1 to 8, wherein the first connection hose and the second connection hose are both plastic hoses.
11. The battery box according to any one of claims 1 to 8, wherein a plurality of first connection holes are formed at intervals along a circumferential direction of the tray in a bottom surface of the tray, a plurality of second connection holes are formed in the liquid-cooled plate to be vertically opposite to the plurality of first connection holes, and a plurality of screw fasteners or rivets are passed through the plurality of second connection holes and the plurality of first connection holes to connect the liquid-cooled plate to the bottom of the tray.
12. The battery box of claim 11, wherein the bottom surface of the tray is formed with at least one groove extending annularly along a circumference of the tray, the groove being located radially inward of the plurality of first connection holes, the groove being filled with glue to seal a gap between the tray and the liquid-cooled plate.
13. The battery box of claim 11, wherein said inlet port and said outlet port are located on one of the short sides of said tray, and said liquid-cooled plate inlet port and said liquid-cooled plate outlet port are located on an end of said liquid-cooled plate adjacent to said short side.
14. A battery pack, comprising:
a battery case according to any one of claims 1-13;
the battery box comprises a plurality of battery cells, wherein the battery cells are arranged in a containing cavity of the battery box side by side.
15. The battery pack of claim 14, wherein both ends of all the cells extend in the width direction of the tray to be adjacent to both long sides of the tray.
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| CN202010339067.3A CN113644336B (en) | 2020-04-26 | 2020-04-26 | Battery box and battery pack with same |
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| CN202010339067.3A CN113644336B (en) | 2020-04-26 | 2020-04-26 | Battery box and battery pack with same |
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| CN113644336B CN113644336B (en) | 2024-02-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115799710A (en) * | 2022-11-24 | 2023-03-14 | 厦门海辰储能科技股份有限公司 | Liquid cooling plate and energy storage device |
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| CN113644336B (en) | 2024-02-27 |
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