CN219163549U - Battery pack - Google Patents
Battery pack Download PDFInfo
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- CN219163549U CN219163549U CN202223469361.XU CN202223469361U CN219163549U CN 219163549 U CN219163549 U CN 219163549U CN 202223469361 U CN202223469361 U CN 202223469361U CN 219163549 U CN219163549 U CN 219163549U
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- tray
- battery pack
- post
- battery
- bottom plate
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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 discloses a battery pack, which comprises a tray and a battery core, wherein the tray comprises a bottom plate and a plurality of convex ribs, and the convex ribs are arranged at the top of the bottom plate at intervals; the plurality of battery cells are arranged in the tray in an array manner along the length direction and the width direction of the tray; the bottom of electric core is equipped with utmost point post and explosion-proof valve, and the bottom of electric core is supported and is leaned on in a plurality of protruding muscle to make the utmost point post be located between two adjacent protruding muscle, and the bottom of electric core, bottom plate and two adjacent protruding muscle between surround and have the exhaust passage, explosion-proof valve orientation is in the exhaust passage and be linked together with the exhaust passage. According to the battery pack, the bottom of the battery core is abutted against the plurality of convex ribs, and the polar column of the battery core and the explosion-proof valve are arranged downwards, so that the polar column is positioned between two adjacent convex ribs, and therefore the Z-direction utilization space can be saved; simultaneously, be linked together with the explosion-proof valve through the exhaust passage in the bottom of tray, high-temperature gas can outwards be discharged through the exhaust passage to improve the security of battery package after thermal runaway greatly.
Description
Technical Field
The utility model relates to the field of batteries, in particular to a battery pack.
Background
In recent years, the appearance of new energy automobiles plays a great role in promoting social development and environmental protection, and a power battery pack is a rechargeable battery which is a power source of the new energy automobiles and is widely applied to the field of the new energy automobiles.
In the existing battery pack, positive and negative poles of the battery cell are arranged upwards, and after the battery cell is out of control, high-temperature gas is discharged to an upper cover of the battery pack, so that the temperature at the bottom of a whole vehicle cab is directly increased; meanwhile, the pole of the battery cell faces upwards, so that the space utilization rate of the automobile chassis is low.
Disclosure of Invention
The utility model aims to overcome the defect that in the prior art, positive and negative poles of a battery cell are upwards arranged to cause the temperature at the bottom of a whole vehicle cockpit to be increased, and the space utilization rate of an automobile chassis is low.
The utility model solves the technical problems by the following technical scheme:
a battery pack, comprising:
the tray comprises a bottom plate and a plurality of convex ribs, and the convex ribs are arranged at the top of the bottom plate at intervals;
the battery cells are arranged in the tray in an array manner along the length and width directions of the tray;
the bottom of electricity core is equipped with utmost point post and explosion-proof valve, the bottom of electricity core support and lean on in a plurality of protruding muscle, so that the utmost point post is located adjacent two between the protruding muscle, just the bottom of electricity core bottom plate with it has the exhaust passage to surround between the adjacent two protruding muscle, explosion-proof valve orientation in the exhaust passage and with the exhaust passage is linked together.
In this scheme, adopt above-mentioned structural style, all set up down the utmost point post and the explosion-proof valve of a plurality of electric core, and support the bottom of electric core on a plurality of protruding muscle for the utmost point post is down and lie in between two adjacent protruding muscle, thereby can save Z and to utilizing the space, realize that vehicle chassis's space utilization is higher. Meanwhile, the bottom of the tray is communicated with the explosion-proof valve through the exhaust channel, and after the battery cell is out of control, high-temperature gas can be discharged outwards through the exhaust channel without directly raising the temperature of the bottom of the automobile cab, so that the safety of the battery pack after the battery cell is out of control is greatly improved.
Preferably, a pole region is further enclosed between the bottom of the battery core, the bottom plate and the adjacent two protruding ribs, the pole region is separated from the exhaust channel by the protruding ribs, and the pole is located in the pole region.
In this scheme, adopt above-mentioned structural style, thereby lean on in a plurality of protruding muscle through the bottom of electric core and be formed with utmost point post region and exhaust passage, thereby utmost point post region is used for holding the utmost point post in order to save Z and to utilizing the space, and exhaust passage is used for discharging high temperature gas in order to improve the security of battery package. Meanwhile, the pole column region and the exhaust channel are separated by the convex ribs, so that high-temperature gas in the exhaust channel cannot flow into the pole column region, and the safety of the battery pack is further improved.
Preferably, the battery pack further comprises an insulating support member, wherein the insulating support member is arranged between the tray and the plurality of battery cells, and the insulating support member extends into the pole column region so that a gap is formed between the pole column and the tray.
In this scheme, adopt above-mentioned structural style, insulating support spare has good insulating effect, sets up insulating support spare between tray and electric core for have the clearance and can not produce the contact between utmost point post and the tray, improved the security of battery package greatly.
Preferably, the insulating support member has a plurality of through holes, the battery pack further includes a plurality of pole connection pieces, the poles extend into the through holes, and two ends of the pole connection pieces extend into the two through holes and are connected with the poles in the two through holes.
In this scheme, adopt above-mentioned structural style, it is more convenient to utilize the utmost point post connection piece to realize that electric core is connected. Meanwhile, the pole connecting piece stretches into the through hole, so that the pole connecting piece is connected with the pole and has a gap with the tray, and the safety of the battery pack is improved. And the insulating support piece is provided with the through hole, so that the installation is realized, the structure is simple, and the processing and the manufacturing are convenient.
Preferably, the pole connecting piece is made of aluminum; and/or the pole connecting piece is welded to the pole.
In the scheme, the structure is adopted, so that the electric conduction performance is good, and the cost is low. Meanwhile, the connection strength between the pole connecting piece and the pole is high, and the safety and stability of the battery pack are further improved.
Preferably, the bottom of the insulating support facing the bottom plate is provided with at least one step part, and the step part is abutted against the convex rib and/or the bottom plate.
In the scheme, the insulating support piece is propped against the tray through the step part by adopting the structure, so that the installation and the connection are very convenient; and the gap between the pole connecting piece positioned in the through hole and the tray is ensured, so that the safety and the stability are higher.
Preferably, the insulating support is adhered to the tray; and/or the battery cell is adhered to the insulating support.
In this scheme, adopt above-mentioned structural style, adopt the mode of bonding to be connected, the installation is connected very conveniently, and has further strengthened joint strength, effectively avoids producing the skew dislocation phenomenon in the in-process of using, has improved the safety and stability of battery package greatly.
Preferably, the battery pack further comprises a plurality of liquid cooling plates, wherein cooling flow channels are formed in the liquid cooling plates, the plurality of liquid cooling plates and the plurality of battery cells are alternately stacked and arranged in the tray along the length and/or width directions of the tray, so that both sides of any one battery cell are provided with the liquid cooling plates.
In this scheme, adopt above-mentioned structural style, through being provided with the liquid cooling board in the both sides of electric core, the both sides of electric core will correspond the cooling runner of liquid cooling board for the produced high temperature of electric core can carry out the heat exchange with the coolant liquid in the cooling runner, thereby can reduce the temperature of electric core, effectively prevent the temperature of electric core too high, improve the temperature homogeneity of battery package, promote the security and the life of battery package greatly.
Preferably, the plurality of ribs and the bottom plate are integrally formed.
In this scheme, adopt above-mentioned structural style, adopt integrated into one piece processing preparation, processing preparation is convenient, and connection structure intensity is high, has improved the stability of tray greatly.
Preferably, the bottom plate and/or the convex ribs are/is provided with a weight-reducing cavity.
In this scheme, adopt above-mentioned structural style, can effectively alleviate the whole weight of tray through subtracting the heavy chamber, reduce the cost of battery package.
On the basis of conforming to the common knowledge in the field, the above preferred conditions can be arbitrarily combined to obtain the preferred examples of the utility model.
The utility model has the positive progress effects that:
according to the battery pack, the bottom of the battery core is abutted against the plurality of convex ribs, and the polar column of the battery core and the explosion-proof valve are arranged downwards, so that the polar column is positioned between two adjacent convex ribs, and therefore the Z-direction utilization space can be saved; simultaneously, be linked together with the explosion-proof valve through the exhaust passage in the bottom of tray, high-temperature gas can outwards be discharged through the exhaust passage to improve the security of battery package after thermal runaway greatly.
Drawings
Fig. 1 is a schematic perspective view of a battery pack according to an embodiment of the present utility model.
Fig. 2 is a schematic top view of a battery pack according to an embodiment of the present utility model, in which a liquid cooling plate is omitted.
Fig. 3 is a schematic cross-sectional view of fig. 2 along line A-A.
Fig. 4 is a schematic structural view of a tray according to an embodiment of the present utility model.
Fig. 5 is a schematic cross-sectional view of fig. 4 along line B-B.
Fig. 6 is a schematic view of a portion of a battery pack according to an embodiment of the present utility model, in which a tray and a liquid cooling plate are omitted.
Fig. 7 is a partial enlarged view of a portion C in fig. 6.
Fig. 8 is a schematic diagram of an exploded structure of a battery cell and a liquid cooling plate according to an embodiment of the utility model.
Fig. 9 is a schematic structural diagram of a liquid cooling plate according to an embodiment of the present utility model.
Reference numerals illustrate:
battery cell 1
Explosion-proof valve 12
Weight-reducing chamber 25
Through hole 31
Detailed Description
The utility model will now be more fully described by way of example only and with reference to the accompanying drawings, but the utility model is not thereby limited to the scope of the examples.
As shown in fig. 1 to 9, an embodiment of the present utility model discloses a battery pack mounted on an automobile chassis. The battery pack comprises a battery core 1 and a tray 2, wherein the tray 2 comprises a bottom plate 21 and a plurality of convex ribs 22, and the convex ribs 22 are arranged at the top of the bottom plate 21 at intervals; the plurality of battery cells 1 are arranged in the tray 2 in an array manner along the length direction and the width direction of the tray 2; the bottom of the battery cell 1 is provided with a pole 11 and an explosion-proof valve 12, the bottom of the battery cell 1 is abutted against a plurality of convex ribs 22, so that the pole 11 is positioned between two adjacent convex ribs 22, an exhaust channel 24 is surrounded among the bottom of the battery cell 1, the bottom plate 21 and the two adjacent convex ribs 22, and the explosion-proof valve 12 faces the exhaust channel 24 and is communicated with the exhaust channel 24.
The protruding muscle 22 interval of a plurality of sets up at the top of bottom plate 21, with the utmost point post 11 and the explosion-proof valve 12 of a plurality of electric core 1 all set up downwards, and with the bottom of electric core 1 support lean on a plurality of protruding muscle 22 for utmost point post 11 is down and lie in between two adjacent protruding muscle 22, thereby can save Z and to utilize the space, realize that automobile chassis's space utilization is higher. Simultaneously, a plurality of protruding muscle 22 all rise from the top of bottom plate 21, the bottom of electric core 1, the bottom plate 21 and enclose between two adjacent protruding muscle 22 and have exhaust passage 24, be linked together with explosion-proof valve 12 through exhaust passage 24 in the bottom of tray 2, after electric core 1 thermal runaway, high temperature gas can outwards discharge through exhaust passage 24 and can not direct automobile cockpit bottom temperature rise to improve the security of battery package after thermal runaway greatly.
As shown in fig. 2, 3, 4 and 5, a pole region 23 is further surrounded between the bottom of the battery cell 1, the bottom plate 21 and two adjacent ribs 22, the pole region 23 is separated from the exhaust channel 24 by the ribs 22, and the pole 11 is located in the pole region 23. The convex ribs 22 are arranged at the top of the bottom plate 21 at intervals and are upwards protruded, the bottom of the battery cell 1 is propped against the convex ribs 22, so that a pole column region 23 and an exhaust channel 24 are formed, the pole column region 23 is used for accommodating the pole column 11 to save Z-direction utilization space, and the exhaust channel 24 is used for exhausting high-temperature gas to improve the safety of the battery pack. The pole region 23 and the exhaust channel 24 are separated by the ribs 22, so that high-temperature gas in the exhaust channel 24 will not flow into the pole region 23, and the safety of the battery pack is further improved.
In this embodiment, two poles 11 and an explosion-proof valve 12 are disposed at the bottom of each cell 1, the two poles 11 are respectively a positive electrode and a negative electrode, and the explosion-proof valve 12 is located between the two poles 11. The bottom of each cell 1 abuts against the four ribs 22 and two pole regions 23 and one exhaust passage 24 are formed, and the two pole regions 23 and the one exhaust passage 24 correspond to the two poles 11 and the one explosion-proof valve 12, respectively.
The ribs 22 and the bottom plate 21 may be integrally formed. The bottom plate 21 and the convex ribs 22 are manufactured by adopting integrated forming, so that the processing and the manufacturing are convenient, the strength of the connecting structure is high, and the stability of the tray 2 is greatly improved. Of course, in other embodiments, a split structure is formed between the protruding rib 22 and the bottom plate 21, and the protruding rib 22 and the bottom plate 21 are detachably connected, so that the installation position of the protruding rib 22 can be adjusted according to the size of the battery cell 1.
Wherein the bottom plate 21 and/or the ribs 22 are provided with weight-reducing cavities 25. The weight of the whole tray 2 can be effectively reduced through the weight reducing cavity 25, and the cost of the battery pack is reduced.
As shown in fig. 2, 3, 6 and 7, the battery pack further includes an insulating support 3, the insulating support 3 is disposed between the tray 2 and the plurality of electric cells 1, and the insulating support 3 extends into the pole region 23, so that a gap is formed between the pole 11 and the tray 2. The insulating support 3 has good insulating effect, and the insulating support 3 is arranged between the tray 2 and the battery cell 1, so that a gap is formed between the pole 11 and the tray 2 without contact, and the safety of the battery pack is greatly improved.
The insulating support 3 has a plurality of through holes 31, and the battery package still includes a plurality of post connection pieces 4, and the post 11 stretches into in the through holes 31, and the both ends of post connection piece 4 stretch into respectively in two through holes 31 and are connected with the post 11 in two through holes 31. The pole connecting piece 4 stretches into the two through holes 31 and is used for connecting the poles 11 of the two adjacent electric cores 1, the electric connection among the plurality of electric cores 1 which are arrayed along the length and/or the width direction of the tray 2 is realized through the plurality of pole connecting pieces 4, and the electric cores 1 are more conveniently connected by utilizing the pole connecting piece 4. Meanwhile, the pole connecting piece 4 stretches into the through hole 31, so that the pole connecting piece 4 is connected with the pole 11 and has a gap with the tray 2, and the safety of the battery pack is improved. And the insulating support piece 3 is provided with the through hole 31, so that the installation is realized, the structure is simple, and the processing and the manufacturing are convenient.
The pole connecting piece 4 is made of aluminum, and has good conductivity and low cost. Of course, other conductive materials may be used for the pole connection piece 4. The pole connecting piece 4 is welded on the pole 11, so that the connecting strength between the pole connecting piece 4 and the pole 11 is high, and the safety and stability of the battery pack are further improved.
In the present embodiment, the insulating support 3 has at least one step 32 toward the bottom of the bottom plate 21, and the step 32 is abutted against the bead 22 and/or the bottom plate 21. The insulating support 3 is propped against the tray 2 through the step part 32, so that the installation and the connection are very convenient; and the clearance between the pole connecting piece 4 and the tray 2 at the through hole 31 is ensured, so that the safety and the stability are higher.
Wherein, the inner wall surface of through-hole 31 has the portion of leaning on of inwards extending, and pole connection piece 4 is located the through-hole and laminating is leaned on in the portion of leaning on for pole connection piece 4 installs more accurately, simple to operate, and guarantees to have the clearance between pole connection piece 4 and the tray 2, and safety and stability is higher.
The insulating support 3 is glued to the tray 2. The insulating support piece 3 is connected with the tray 2 in an adhering mode, so that the mounting connection is very convenient, the connection strength between the insulating support piece 3 and the tray 2 is further enhanced, the phenomenon that the insulating support piece 3 is offset and misplaced in the using process is effectively avoided, and the safety and the stability of the battery pack are greatly improved.
The cell 1 is glued to an insulating support 3. The electric core 1 adopts the mode of bonding to be connected with insulating support piece 3, and the installation is connected very conveniently, and has further strengthened the joint strength between insulating support piece 3 and the electric core 1, effectively avoids producing skew dislocation phenomenon between electric core 1 and the insulating support piece 3 in the in-process of using, has improved the safety and stability of battery package greatly.
As shown in fig. 1, 8 and 9, the battery pack further includes a plurality of liquid cooling plates 5, cooling channels are provided in the liquid cooling plates 5, and the plurality of liquid cooling plates 5 and the plurality of battery cells 1 are stacked and arranged in the tray 2 in a crossing manner along the length and/or width directions of the tray 2, so that both sides of any one of the battery cells 1 are provided with the liquid cooling plates 5. The liquid cooling plate 5 is connected to an external cooling system for supplying a cooling liquid so that the cooling liquid can flow into the cooling flow passage of the liquid cooling plate 5. Through being provided with liquid cooling board 5 in the both sides of electric core 1, the both sides of electric core 1 will correspond the cooling runner of liquid cooling board 5 for the produced high temperature of electric core 1 can carry out the heat exchange with the coolant liquid in the cooling runner, thereby can reduce the temperature of electric core 1, effectively prevent the temperature of electric core 1 too high, improve the temperature homogeneity of battery package, promote the security and the life of battery package greatly.
In this embodiment, two ends of the liquid cooling plates 5 are exposed out of the outer surface of the electric core 1 and are provided with connection joints, and two adjacent liquid cooling plates 5 are connected through the connection joints, so that cooling flow channels of a plurality of liquid cooling plates 5 are communicated. And is connected with an external cooling system through a connecting joint.
While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the utility model, but such changes and modifications fall within the scope of the utility model.
Claims (10)
1. A battery pack, comprising:
the tray comprises a bottom plate and a plurality of convex ribs, and the convex ribs are arranged at the top of the bottom plate at intervals;
the battery cells are arranged in the tray in an array manner along the length and width directions of the tray;
the bottom of electricity core is equipped with utmost point post and explosion-proof valve, the bottom of electricity core support and lean on in a plurality of protruding muscle, so that the utmost point post is located adjacent two between the protruding muscle, just the bottom of electricity core bottom plate with it has the exhaust passage to surround between the adjacent two protruding muscle, explosion-proof valve orientation in the exhaust passage and with the exhaust passage is linked together.
2. The battery pack of claim 1, wherein a post region is further defined between the bottom of the cell, the bottom plate, and two adjacent ribs, the post region and the exhaust channel are separated by the ribs, and the post is located in the post region.
3. The battery pack of claim 2 further comprising an insulating support disposed between the tray and the plurality of cells, the insulating support extending into the post region such that there is a gap between the post and the tray.
4. The battery pack of claim 3, wherein the insulating support has a plurality of through holes, the battery pack further comprises a plurality of post connecting pieces, the posts extend into the through holes, and two ends of the post connecting pieces extend into the two through holes and are connected with the posts in the two through holes.
5. The battery pack of claim 4, wherein the post tab is aluminum; and/or the pole connecting piece is welded to the pole.
6. A battery pack as claimed in claim 3, wherein the insulating support has at least one step in the bottom towards the base plate, the step fitting against the bead and/or the base plate.
7. The battery pack of claim 3, wherein the insulating support is bonded to the tray; and/or the battery cell is adhered to the insulating support.
8. The battery pack according to claim 1, further comprising a plurality of liquid cooling plates, wherein cooling channels are formed in the liquid cooling plates, and the plurality of liquid cooling plates and the plurality of electric cells are stacked in the tray in a crossing manner along the length and/or width direction of the tray, so that the liquid cooling plates are arranged on both sides of any one electric cell.
9. The battery pack of claim 1, wherein a plurality of said ribs are integrally formed with said base plate.
10. The battery pack of claim 1, wherein the bottom plate and/or the ribs have a weight-reducing cavity therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223469361.XU CN219163549U (en) | 2022-12-22 | 2022-12-22 | Battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223469361.XU CN219163549U (en) | 2022-12-22 | 2022-12-22 | Battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219163549U true CN219163549U (en) | 2023-06-09 |
Family
ID=86640972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223469361.XU Active CN219163549U (en) | 2022-12-22 | 2022-12-22 | Battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219163549U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023246922A1 (en) * | 2022-06-23 | 2023-12-28 | 比亚迪股份有限公司 | Battery pack and vehicle |
-
2022
- 2022-12-22 CN CN202223469361.XU patent/CN219163549U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023246922A1 (en) * | 2022-06-23 | 2023-12-28 | 比亚迪股份有限公司 | Battery pack and vehicle |
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