CN209786026U - battery pack and shell thereof - Google Patents
battery pack and shell thereof Download PDFInfo
- Publication number
- CN209786026U CN209786026U CN201920795545.4U CN201920795545U CN209786026U CN 209786026 U CN209786026 U CN 209786026U CN 201920795545 U CN201920795545 U CN 201920795545U CN 209786026 U CN209786026 U CN 209786026U
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- heat exchange
- plate
- battery pack
- shell
- groove
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to a battery pack and a shell thereof, wherein, the shell comprises an upper shell and a lower shell; the lower shell comprises a bottom plate and a side wall which is fixedly arranged above the bottom plate along the circumferential direction, and the bottom plate is provided with a connecting part extending to the outside of the side wall; the bottom plate comprises an upper heat exchange plate and a lower heat exchange plate which are fixed in a sealing mode, at least one of the upper heat exchange plate and the lower heat exchange plate is provided with a groove, a heat exchange channel is formed between the upper heat exchange plate and the lower heat exchange plate through the groove, and the heat exchange channel is used for placing a heat exchange medium to exchange heat with the battery module in the shell; the connecting part is provided with a liquid inlet and a liquid outlet which are respectively communicated with the two ends of the heat exchange channel. The shell can reduce the weight and the volume of the battery pack so as to achieve the purpose of light weight and facilitate the installation of the battery pack.
Description
Technical Field
The utility model relates to a battery package technical field, concretely relates to battery package and casing thereof.
Background
The battery pack is internally provided with components such as a battery module and a heat exchange pipeline, wherein the heat exchange pipeline is used for exchanging heat for the battery module; the other type is that the heat exchange tube sets up to including the feed liquor pipe, drain pipe and communicate many liquid cooling pipes between feed liquor pipe and drain pipe, the pipe wall of liquid cooling pipe is thinner, can effectively reduce the whole weight of this battery package, nevertheless because the diapire of liquid cooling pipe and feed liquor pipe, the diapire of drain pipe no longer the coplanar, consequently, still be equipped with the silicon bubble cotton between the diapire of liquid cooling pipe and battery package casing, be used for supporting the liquid cooling pipe, avoid it to take place to warp, therefore, its shared space also does not reduce.
As is well known, how to reduce the weight and volume of a battery pack at the same time to achieve the purpose of light weight is a technical problem to be solved by those skilled in the art because of the limited installation space.
SUMMERY OF THE UTILITY MODEL
the utility model aims at providing a battery package and casing thereof can reduce the weight and the volume of battery package simultaneously to realize lightweight purpose, the installation of the battery package of being convenient for.
In order to solve the above technical problem, the present invention provides a battery pack case, which includes an upper case and a lower case; the lower shell comprises a bottom plate and a side wall which is fixedly arranged above the bottom plate along the circumferential direction, and the bottom plate is provided with a connecting part which extends to the outside of the side wall; the bottom plate comprises an upper heat exchange plate and a lower heat exchange plate which are fixed in a sealing mode, at least one of the upper heat exchange plate and the lower heat exchange plate is provided with a groove, a heat exchange channel is formed between the upper heat exchange plate and the lower heat exchange plate through the groove, and the heat exchange channel is used for placing a heat exchange medium to exchange heat with the battery module in the shell; the connecting part is provided with a liquid inlet and a liquid outlet which are respectively communicated with the two ends of the heat exchange channel.
The bottom plate of the lower shell is formed by mutually sealing and fixing two heat exchange plates (an upper heat exchange plate and a lower heat exchange plate), wherein the upper heat exchange plate is the heat exchange plate facing to one side of the upper shell, and the lower heat exchange plate is the heat exchange plate far away from one side of the upper shell. At least one of the two heat exchange plates is provided with a groove, the groove can form a heat exchange channel between the two heat exchange plates, namely, at least one groove is arranged between the lower surface of the upper heat exchange plate and the upper surface of the lower heat exchange plate, and the heat exchange channel is used for introducing a heat exchange medium to exchange heat (heat or cool) with the battery module in the shell.
The bottom plate that this casing has integrated heat transfer passageway and lower casing is as an organic whole, need not to establish heat transfer parts in addition in the casing, can simplify the overall structure of battery package, make the overall structure of battery package lighter, be convenient for arrange parts such as battery module in limited space to under the same arrangement condition, can reduce the whole volume of this battery package, the installation of this battery package of being convenient for.
The bottom plate is provided with a connecting part extending to the outside of the side wall, the connecting part is provided with a liquid inlet and a liquid outlet, wherein the liquid inlet and the liquid outlet are respectively communicated with the two ends of the heat exchange channel, so that the two ends of the heat exchange channel form a liquid inlet end and a liquid outlet end respectively. Specifically, heat transfer medium can be let in the heat transfer passageway from the inlet by the outside in, then flow through the heat transfer passageway and take place the heat transfer with the battery module in the battery package after, discharge from the liquid outlet again to realize the circulation of heat transfer medium in the heat transfer passageway. That is to say, the liquid inlet and the liquid outlet of heat transfer passageway are located the outside of lateral wall, can avoid the liquid inlet, the liquid outlet to interfere with other parts in the casing of battery package with the connection of outside pipeline, are convenient for installation operation.
Optionally, the lower heat exchange plate has a thickness greater than a thickness of the upper heat exchange plate.
Optionally, the lower heat exchange plate is provided with the groove.
Optionally, the upper heat exchange plate and the lower heat exchange plate are fixed by brazing.
Optionally, a sealing strip is further arranged between the upper shell and the top end of the side wall, a flanging is arranged on the upper shell downwards, and the height of the flanging is larger than the thickness of the sealing strip.
Optionally, at least one of the lower terminal surface of the upper shell and the upper end surface of the side wall is provided with a sealing groove for pouring silica gel along the circumferential direction of the sealing groove, and the silica gel can exceed the end surface of the sealing groove after being solidified to form the sealing strip.
Optionally, the upper housing is provided with the sealing groove.
Optionally, a groove wall of the sealing groove and an end face of the sealing groove are in smooth transition.
Optionally, the lower shell is further provided with a fixing support, and the battery module is fixed to the fixing support through bolts.
In addition, the utility model also provides a battery pack, which comprises a battery module and the shell, wherein the battery module is positioned in the shell; the battery module with the lower casing is fixed, just battery module with it is equipped with the heat conduction pad to press from both sides between the heat transfer passageway of bottom plate.
The technical effect of the battery pack with the housing is similar to that of the housing, and is not repeated herein for saving space.
Drawings
fig. 1 is a schematic structural diagram of a battery pack according to an embodiment of the present invention;
FIG. 2 is a top view of the base plate of FIG. 1;
FIG. 3 is a top view of the lower heat exchange plate of FIG. 1;
Fig. 4 is a schematic view of a connection structure of the upper case and the lower case of fig. 1.
In the accompanying fig. 1-4, the reference numerals are illustrated as follows:
1-upper shell, 11-flanging; 2-lower shell, 21-bottom plate, 211-upper heat exchange plate, 212-lower heat exchange plate, 213-groove, 214-connecting part, 215-liquid inlet, 216-liquid outlet, 22-side wall; 3-a battery module; 4-sealing strips; 5-a heat conducting pad; 6-mounting bolts.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1-4, fig. 1 is a schematic structural diagram of a battery pack according to an embodiment of the present invention; FIG. 2 is a top view of the base plate of FIG. 1; FIG. 3 is a top view of the lower heat exchange plate of FIG. 1; fig. 4 is a schematic view of a connection structure of the upper case and the lower case of fig. 1.
The embodiment of the utility model provides a battery pack and casing thereof, wherein, as shown in fig. 1, the battery pack comprises a casing and a battery module 3 positioned in the casing, specifically, the casing of the battery pack comprises an upper casing 1 and a lower casing 2, the lower casing 2 comprises a bottom plate 21 and a side wall 22 which is fixedly arranged above the bottom plate 21 along the circumferential direction, the bottom plate 21 comprises an upper heat exchange plate 211 and a lower heat exchange plate 212 which are fixed in a sealing way; in last heat transfer board 211 and lower heat transfer board 212, at least one is equipped with recess 213, and recess 213 forms the heat transfer passageway between last heat transfer board 211 and lower heat transfer board 212, and the heat transfer passageway is used for placing heat transfer medium in order to carry out the heat transfer with the battery module 3 that is located the casing to it is equipped with heat conduction pad 5 to press from both sides between the heat transfer passageway of battery module 3 and bottom plate 21, in order to protect battery module 3. Meanwhile, as shown in fig. 1 to 3, the bottom plate 21 is provided with a connecting portion 214 extending to the outside of the side wall 22, and the connecting portion 214 is provided with a liquid inlet 215 and a liquid outlet 216 communicating with both ends of the heat exchange channel.
In detail, the bottom plate 21 of the lower casing 2 is formed by mutually sealing and fixing two heat exchange plates (an upper heat exchange plate 211 and a lower heat exchange plate 212), wherein the upper heat exchange plate 211 is a heat exchange plate facing to one side of the upper casing 1, and the lower heat exchange plate 212 is a heat exchange plate facing away from one side of the upper casing 1. At least one of the two heat exchange plates is provided with a groove 213, the groove 213 can form a heat exchange channel between the two heat exchange plates, that is, at least one of the two heat exchange plates is provided with the groove 213 to form the heat exchange channel between the lower surface of the upper heat exchange plate 211 and the upper surface of the lower heat exchange plate 212, and the heat exchange channel is used for introducing a heat exchange medium to exchange heat (heat or cool) with the battery module 3 located in the housing.
This casing has integrated heat transfer passageway and lower casing 2's bottom plate 21 as an organic whole, need not to establish heat transfer parts in addition in the casing, can simplify the overall structure of battery package, make the overall structure of battery package lighter, be convenient for arrange parts such as battery module 3 in limited space to under the same arrangement condition, can reduce the whole volume of this battery package, the installation of this battery package of being convenient for.
the bottom plate 21 is provided with a connecting portion 214 extending to the outside of the side wall 22, the connecting portion 214 is provided with a liquid inlet 215 and a liquid outlet 216, wherein the liquid inlet 215 and the liquid outlet 216 are respectively communicated with two ends of the heat exchange channel, so that two ends of the heat exchange channel respectively form a liquid inlet end and a liquid outlet end. Specifically, the heat exchange medium may be introduced into the heat exchange channel from the liquid inlet 215 from the outside, then flows through the heat exchange channel, exchanges heat with the battery module 3 in the battery pack, and is discharged from the liquid outlet 216, so as to realize circulation of the heat exchange medium in the heat exchange channel. That is to say, the liquid inlet 215 and the liquid outlet 216 of the heat exchange channel are disposed on the outer side of the side wall 22, so that interference between external pipelines connected to the liquid inlet 215 and the liquid outlet 216 and other components in the housing of the battery pack can be avoided, and the installation and arrangement of the components in the battery pack are facilitated.
In the above embodiment, the thickness of the lower heat exchange plate 212 is greater than that of the upper heat exchange plate 211, and the battery module 3 is disposed on one side of the upper heat exchange plate 211 and exchanges heat with the heat exchange channel, so that the thickness of the upper heat exchange plate 211 is relatively thin, which can ensure a good heat exchange effect, and the thickness of the lower heat exchange plate 212 is relatively thick, which can ensure the strength of the bottom plate 21 of the housing.
Further, as shown in fig. 3, the lower heat exchange plate 212 is provided with a groove 213, or in this embodiment, the groove 213 may be further provided on the upper heat exchange plate 211, or the upper heat exchange plate 211 and the lower heat exchange plate 212 are respectively provided with a partial groove, and after the upper heat exchange plate 211 and the lower heat exchange plate 212 are fixed, the partial groove of the upper heat exchange plate 211 corresponds to the partial groove of the lower heat exchange plate 212 to form the heat exchange channel.
When the groove 213 is formed in the lower heat exchange plate 212, the strength of the upper heat exchange plate 211 can be ensured while the thickness of the upper heat exchange plate 211 is relatively thin. In addition, the grooves 213 are formed in the lower heat exchange plate 212, so that the manufacturing process can be simplified compared with the case that the upper heat exchange plate 211 and the lower heat exchange plate 212 are respectively formed with partial grooves.
In the above embodiment, the upper heat exchange plate 211 and the lower heat exchange plate 212 are fixed by brazing, specifically, after the groove 213 is processed, brazing filler metal is laid on the lower surface of the upper heat exchange plate 211 and the upper surface of the lower heat exchange plate 212 (avoiding the position of the groove 213), and then the brazing filler metal is melted and welded at high temperature, so that the lower surface of the upper heat exchange plate 211 and the upper surface of the lower heat exchange plate 212 are fixed in a sealing manner, and thus the groove 213 forms the heat exchange channel, which may be arranged in a serpentine shape as shown in fig. 3, so as to cool the battery module 3 in the housing.
Of course, in the above embodiment, the upper heat exchange plate 211 and the lower heat exchange plate 212 are both configured as a split structure, but in this embodiment, the upper heat exchange plate 211 and the lower heat exchange plate 212 may also be configured as an integrated structure, the groove 213 is configured to form a hole structure in the inner wall of the integrated structure, specifically, two through holes may be formed at one end of the integrated structure, and a water channel for communicating the two through holes is provided at the other end, the water channel may be a peripheral pipeline or a water tank disposed on the side wall 22 of the integrated structure, and the outer wall of the water tank is covered to form a seal. Therefore, the upper heat exchange plate 211 and the lower heat exchange plate 212 are arranged to be of a split structure, so that the processing technology can be simplified, and the processing cost can be reduced.
in the above embodiment, as shown in fig. 4, a sealing strip 4 is further disposed between the upper shell 1 and the top end of the side wall 22, and the upper shell 1 is provided with a flange 11 downward, and the height of the flange 11 is greater than the thickness of the sealing strip 4. Go up casing 1 and casing 2 sealed setting down, can avoid inside entering dust, guarantee inside clean, it is specific, turn-ups 11 can provide the guard action to sealing strip 4 from the outside, when carrying out the water impact test, turn-ups 11 can block the direct impact of water to sealing strip 4, protection sealing strip 4, prolongs its life.
In the above embodiment, at least one of the lower end surface of the upper case 1 and the upper end surface of the sidewall 22 is provided with a sealing groove for pouring silica gel along the circumferential direction thereof, and the silica gel can exceed the end surface of the sealing groove after being solidified to form the sealing strip 4. In detail, at least one of the lower end surface of the upper casing 1 (the end surface facing one side of the lower casing 2) and the upper end surface of the side wall 22 (the end surface facing one side of the upper casing 1) is provided with a sealing groove for filling silica gel, and particularly, when the operation is performed, the sealing groove is filled with silica gel and the silica gel protrudes out of the end surface of the sealing groove, when the silica gel is solidified, a silica gel strip can be formed, the end surface protruding out of the sealing groove is the sealing strip 4, and when the upper casing 1 and the lower casing 2 are fixed through the mounting bolt 6, the silica gel strip is in a compression state, so that the sealing effect between the upper casing 1 and the lower casing 2 is realized.
That is to say, in this embodiment, need not to establish sealing strip 4 in addition, directly pour into silica gel in the seal groove, wait that silica gel solidification back can form above-mentioned sealing strip 4, so set up, need not to consider the size, the shape scheduling problem of sealing strip 4, simplify manufacturing process and flexibility good.
in the above embodiment, the lower end surface of the upper casing 1 is provided with the above sealing groove, and of course, the upper end surface of the sidewall 22 may also be provided with the above sealing groove, or the upper casing 1 and the sidewall 22 are respectively provided with partial sealing grooves, that is, the sealing grooves of the upper casing 21 and the sidewall 22 are both filled with silica gel. When locating last casing 1 with the seal groove, when installing casing 2 down, if install parts such as battery module 3 of battery package in casing 2 down in, can carry out the encapsulating operation to the seal groove of last casing 1, treat that the inside part of casing 2 is installed and accomplish the back down, the silica gel in the seal groove of last casing 1 can solidify into the silica gel strip (be above-mentioned sealing strip 4), then with last casing 1 back-off in the upper surface of casing 2's lateral wall 22 down, it can to fix through construction bolt 6. So set up, the installation of casing 2 and the encapsulating operation of last casing 1 can go on simultaneously down, effectively promote the installation effectiveness of battery package.
Further, smooth transition between the cell wall of seal groove and the terminal surface of seal groove can avoid sealing strip 4 to cause the damage to it because the edges and corners between the cell wall of seal groove and the terminal surface when the extrusion, guarantees the life of this sealing strip 4, and then ensures the sealed effect of this sealing strip 4.
In the above embodiment, the lower case 2 is further provided with fixing brackets for fixing the battery modules 3, which are fixed by bolts. Specifically, this fixed bolster can be fixed with the diapire of casing 2 down or fixed all with lateral wall 22, does not do the restriction here to this fixed bolster is corresponding with arranging of heat transfer passageway, in order to guarantee the heat transfer effect between heat transfer passageway can and battery module 3.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A case of a battery pack, characterized by comprising an upper case (1) and a lower case (2);
the lower shell (2) comprises a bottom plate (21) and a side wall (22) fixedly arranged above the bottom plate (21) along the circumferential direction, and the bottom plate (21) is provided with a connecting part (214) extending out of the side wall (22);
The bottom plate (21) comprises an upper heat exchange plate (211) and a lower heat exchange plate (212) which are fixed in a sealing mode, at least one of the upper heat exchange plate (211) and the lower heat exchange plate (212) is provided with a groove (213), a heat exchange channel is formed between the upper heat exchange plate (211) and the lower heat exchange plate (212) through the groove (213), and the heat exchange channel is used for placing a heat exchange medium to exchange heat with the battery module (3) located in the shell;
The connecting part (214) is provided with a liquid inlet (215) and a liquid outlet (216) which are respectively communicated with the two ends of the heat exchange channel.
2. The battery pack housing according to claim 1, wherein the lower heat exchanger plate (212) has a thickness greater than the thickness of the upper heat exchanger plate (211).
3. A battery pack housing according to claim 2, wherein the lower heat exchanger plate (212) is provided with said groove (213).
4. The battery pack case according to claim 1, wherein the upper heat exchange plate (211) and the lower heat exchange plate (212) are fixed by brazing.
5. The battery pack shell according to any one of claims 1 to 4, wherein a sealing strip (4) is further arranged between the upper shell (1) and the top end of the side wall (22), a flanging (11) is arranged downwards on the upper shell (1), and the height of the flanging (11) is greater than the thickness of the sealing strip (4).
6. The battery pack case according to claim 5, wherein at least one of the lower end surface of the upper case (1) and the upper end surface of the side wall (22) is provided with a sealing groove for pouring silicone rubber along the circumferential direction thereof, and the silicone rubber can exceed the end surface of the sealing groove after being solidified to form the sealing strip (4).
7. The battery pack case according to claim 6, wherein the upper case (1) is provided with the sealing groove.
8. the battery pack case of claim 7, wherein the groove wall of the sealing groove is in smooth transition with the end face of the sealing groove.
9. The battery pack case according to any one of claims 1 to 4, wherein the lower case (2) is further provided with a fixing bracket, and the battery module (3) is fixed to the fixing bracket by bolts.
10. A battery pack, characterized by comprising a battery module (3) and a housing according to any one of claims 1-9, the battery module (3) being located within the housing;
The battery module (3) is fixed with the lower shell (2), and a heat conducting pad (5) is clamped between the battery module (3) and the heat exchange channel of the bottom plate (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920795545.4U CN209786026U (en) | 2019-05-29 | 2019-05-29 | battery pack and shell thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920795545.4U CN209786026U (en) | 2019-05-29 | 2019-05-29 | battery pack and shell thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209786026U true CN209786026U (en) | 2019-12-13 |
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ID=68788280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920795545.4U Active CN209786026U (en) | 2019-05-29 | 2019-05-29 | battery pack and shell thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209786026U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114762179A (en) * | 2020-01-31 | 2022-07-15 | 松下知识产权经营株式会社 | Electricity storage module |
-
2019
- 2019-05-29 CN CN201920795545.4U patent/CN209786026U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114762179A (en) * | 2020-01-31 | 2022-07-15 | 松下知识产权经营株式会社 | Electricity storage module |
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