CN218385627U - Power battery pack for battery thermal runaway protection and vehicle - Google Patents
Power battery pack for battery thermal runaway protection and vehicle Download PDFInfo
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- CN218385627U CN218385627U CN202222261687.7U CN202222261687U CN218385627U CN 218385627 U CN218385627 U CN 218385627U CN 202222261687 U CN202222261687 U CN 202222261687U CN 218385627 U CN218385627 U CN 218385627U
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- battery
- battery pack
- fireproof plate
- thermal runaway
- upper cover
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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 power battery pack and a vehicle for protecting thermal runaway of a battery, which comprises a battery core group and a conductive bar, wherein the battery core group comprises a plurality of battery cores, each battery core is connected with the conductive bar, and each battery core is provided with an explosion-proof valve; the battery pack comprises a battery pack upper cover, a battery fireproof plate and a battery pack base; the battery pack upper cover is connected with the battery pack base to form a closed space; the battery fireproof plate, the conductive bar and the electric core group are arranged in the closed space; the battery fireproof plate is connected with the battery pack upper cover, and a plurality of independent exhaust spaces are formed between the battery fireproof plate and the battery pack upper cover; the exhaust space is communicated with the atmosphere outside the power battery pack through an exhaust piece; and the battery fireproof plate is provided with an opening communicated with the exhaust space at a position corresponding to the explosion-proof valve on the battery core. When electric core emergence thermal runaway, the utility model discloses can prevent that other electric cores receive high temperature gas's influence on every side to play the purpose that the separation heat stretchs.
Description
Technical Field
The utility model belongs to the technical field of the new energy automobile battery, concretely relates to power battery package and vehicle of battery thermal runaway protection.
Background
With the increasing prominence of the safety problem of the battery, the thermal runaway protection of the lithium battery gradually becomes an industry attack and customs problem, and the arrangement commonly adopted in the industry at present is to reserve a gap between the upper cover of the battery pack and the top of the battery cell, so that on one hand, the height and the size of the battery pack are not favorably reduced; on the other hand, when the battery core is out of control thermally, the out-of-control thermally generated gas in the battery pack can diffuse to the periphery, so that a directional exhaust channel cannot be formed, and the high-temperature gas influences the surrounding normal battery core, thereby causing thermal spread in the battery pack. For example, in the patent of thermal protection system for power battery (application number: 201911121732.5), a gap is reserved between the battery module and the upper cover, so that a fixed flow channel cannot be formed for thermal runaway high-temperature gas exhaust, and the height space of the battery pack cannot be saved.
Therefore, it is necessary to develop a power battery pack and a vehicle with battery thermal runaway protection.
Disclosure of Invention
An object of the utility model is to provide a power battery package and vehicle of battery thermal runaway protection, when electric core takes place the thermal runaway, can prevent around electric core receive high temperature gas's influence to play the thermal stretch purpose of separation.
On the first hand, the power battery pack for protecting the thermal runaway of the battery comprises a battery core group and a conductive bar, wherein the battery core group comprises a plurality of battery cells, each battery cell is connected through the conductive bar, and each battery cell is provided with an explosion-proof valve; the battery pack comprises a battery pack upper cover, a battery fireproof plate and a battery pack base;
the battery pack upper cover is connected with the battery pack base to form a closed space;
the battery fireproof plate, the conductive bar and the electric core group are arranged in the closed space;
the battery fireproof plate is connected with the battery pack upper cover, and a plurality of independent exhaust spaces are formed between the battery fireproof plate and the battery pack upper cover;
the exhaust space is communicated with the atmosphere outside the power battery pack through an exhaust piece;
and the battery fireproof plate is provided with an opening communicated with the exhaust space at a position corresponding to the explosion-proof valve on the battery core.
Optionally, the upper surface of the battery fireproof plate is bonded on the upper cover of the battery pack, the lower surface of the battery fireproof plate is bonded on the conductive bar, and the conductive bar is welded on the battery core; the inner side space of the upper cover of the battery pack can be saved, so that the overall height of the battery pack is reduced.
Optionally, the plurality of battery cores are arranged in multiple rows along the set direction, so that the overall height of the battery pack can be reduced.
Optionally, a plurality of rows of openings are formed in the battery fireproof plate, each opening corresponds to the explosion-proof valve on each battery cell one by one, and the size of each opening is larger than that of each opening of each explosion-proof valve; the non-hole-opening area on the battery fireproof plate corresponds to the position of the conductive bar; when the battery core is out of thermal runaway, all gas exhausted by the explosion-proof valve on the battery core can be ensured to smoothly pass through the opening of the battery fireproof plate and enter the exhaust space.
Optionally, a plurality of transverse protrusions are arranged on the battery pack upper cover, and the transverse protrusions are respectively arranged in one-to-one correspondence with the plurality of rows of openings on the battery fireproof plate; the non-protruding area of the battery pack upper cover is correspondingly bonded with the non-hole area on the battery fireproof plate, so that the transverse protrusion and the battery fireproof plate form the exhaust space; when a certain electric core is out of control due to heat, all gas exhausted by the explosion-proof valve on the electric core can be ensured to smoothly pass through the opening of the fireproof plate of the battery and enter the corresponding exhaust space, and the surrounding electric core can be effectively prevented from being influenced by high-temperature gas.
Optionally, the conductive bar is welded on the top of the battery core and connected in a welding manner, so that reliable connection between the conductive bar and the battery core can be ensured.
Optionally, the bottom of the battery core is bonded to the battery pack base and connected in a bonding manner, so that reliable connection between the battery core and the battery pack base can be ensured.
Optionally, the peripheral edge of the battery pack upper cover is combined with the battery pack base through the sealing surface, and reliable sealing connection between the battery pack upper cover and the battery pack base can be ensured through combination of the sealing surface.
Optionally, the exhaust member is arranged on the base of the battery pack, so that reliable fixation of the exhaust member can be ensured, one end of the exhaust member is communicated with the exhaust space, and the other end of the exhaust member is communicated with the atmosphere outside the power battery pack, so that the exhaust member smoothly exhausts the gas in the exhaust space to the outside of the power battery pack.
Second aspect, a vehicle, adopt like the utility model discloses a power battery package of battery thermal runaway protection.
The utility model has the advantages of it is following: power battery package of battery thermal runaway protection, through building a directional thermal runaway high temperature gas emission passageway between battery package upper cover, battery PLASTIC LAMINATED, the electric core, when electric core takes place the thermal runaway, the trompil that the explosion-proof valve on the electric core was discharged all gas and passed the battery PLASTIC LAMINATED gets into this exhaust space, arrange outside the power battery package by the exhaust member on the battery package base again, gas can effectively avoid normal electric core around through the route, electric core receives high temperature gas's influence around effectively having prevented, thereby play the effect of thermal runaway protection.
Drawings
FIG. 1 is an explanatory view of the present embodiment;
fig. 2 is a schematic structural view of an upper cover of the battery pack in the present embodiment;
FIG. 3 is a schematic structural view of a fire-proof plate for a battery according to the present embodiment;
fig. 4 is a schematic diagram illustrating arrangement of battery cells and connection between the battery cells and a conductive bar in this embodiment;
in the figure: 1-battery pack upper cover, 11-bulge, 12-non-bulge area, 2-battery fireproof plate, 21, hole, 22, non-hole area, 3-conductive bar, 4-battery core and 5-battery pack base.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to fig. 4, in this embodiment, a power battery pack for protecting battery thermal runaway includes a battery pack upper cover 1, a battery fireproof plate 2, a conductive bar 3, a battery pack 4, and a battery pack base 5. The electric core group 4 comprises a plurality of electric cores, each electric core is connected with the corresponding electric conduction bar 3, and each electric core is provided with an explosion-proof valve. The battery pack upper cover 1 is connected with the battery pack base 5 to form a closed space. The battery fireproof plate 2, the conductive bar 3 and the electric core group 4 are sequentially arranged in the closed space from top to bottom. The battery fireproof plate 2 is connected with the battery pack upper cover 1, and a plurality of independent exhaust spaces are formed between the battery fireproof plate 2 and the battery pack upper cover 1. The exhaust space is communicated with the atmosphere outside the power battery pack through an exhaust member (such as a one-way valve, not shown in the figure). And an opening 21 communicated with the exhaust space is formed in the position, corresponding to the anti-explosion valve on the battery cell, of the battery fireproof plate 2.
When a certain electric core takes place the thermal runaway, the trompil 21 that the explosion-proof valve on the electric core was discharged and gets into in the exhaust space corresponding with this electric core, and outside the power battery package was arranged to the exhaust member on the battery package base 5 again, normal electric core around can effectively being avoided by the route to gas, has effectively prevented around that electric core from receiving high temperature gas's influence to play the effect of thermal runaway protection.
In this embodiment, the upper surface of the battery fireproof plate 2 is bonded on the battery pack upper cover 1, the lower surface of the battery fireproof plate 2 is bonded on the conductive bar 3, and the conductive bar 3 is welded on the electric core. The arrangement mode can save the inner side space of the upper cover of the battery pack, and effectively reduces the overall height of the power battery pack.
As shown in fig. 1, in this embodiment, the plurality of battery cells are arranged in multiple rows along a set direction, and the overall height of the battery pack can be reduced by using the arrangement manner of the battery cells.
As shown in fig. 3, in this embodiment, a plurality of rows of openings 21 are formed in the battery fireproof plate 2, each opening 21 corresponds to an explosion-proof valve on each battery cell one by one, and the size of the opening 21 is larger than that of the opening of the explosion-proof valve; the non-perforated area 22 of the battery flame shield 2 corresponds to the position of the electrical conductor bar 3. When the battery core is out of thermal runaway, all gas exhausted by the explosion-proof valve on the battery core can be ensured to smoothly pass through the corresponding opening 21 on the battery fireproof plate 2 and enter the corresponding exhaust space.
As shown in fig. 2, in this embodiment, a plurality of transverse protrusions 11 are disposed on the battery pack upper cover 1, and the plurality of transverse protrusions 11 are respectively disposed in one-to-one correspondence with a plurality of rows of openings 21 on the battery fireproof plate 2; the non-protruding area 12 of the battery pack upper cover 1 is bonded to the non-perforated area 22 of the battery fire-protecting plate 2, so that the lateral protrusion 11 and the battery fire-protecting plate 2 form the exhaust space therebetween. When a certain electric core is out of control due to heat, all gas exhausted by the explosion-proof valve on the electric core can smoothly pass through the open hole 21 of the battery fireproof plate 2 and enter the exhaust space corresponding to the electric core, so that other surrounding electric cores can be effectively prevented from being influenced by high-temperature gas.
As shown in fig. 4, in this embodiment, the conductive bar 3 is welded on the top of the battery cells, and all the battery cells are connected in series and in parallel through the conductive bar 3. The conductive bar 3 is connected with the battery cell in a welding mode, so that the reliable connection between the conductive bar 3 and the battery cell can be ensured.
As shown in fig. 1, in this embodiment, the bottom of the battery cell is bonded to the battery pack base 5, and the battery cell and the battery pack base 5 are connected in a bonding manner, so that reliable connection between the battery cell and the battery pack base 5 can be ensured.
As shown in fig. 1, in the present embodiment, the peripheral edge of the battery pack upper cover 1 is coupled to the battery pack base 5 by a sealing surface, and the battery pack upper cover 1 and the battery pack base 5 can be reliably and hermetically connected by the sealing surface.
In this embodiment, the exhaust member is disposed on the battery pack base 5, so as to ensure reliable fixation of the exhaust member, ensure that one end of the exhaust member is communicated with the exhaust space, and ensure that the other end of the exhaust member is communicated with the atmosphere outside the power battery pack, so that the exhaust member smoothly exhausts the gas in the exhaust space to the outside of the power battery pack.
In this embodiment, a vehicle adopts the power battery pack for protecting against thermal runaway of a battery as described in this embodiment.
The above embodiments are preferred embodiments of the method of the present invention, but the method of the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.
Claims (10)
1. A power battery pack for protecting a battery from thermal runaway comprises a battery core group (4) and a conducting bar (3), wherein the battery core group (4) comprises a plurality of battery cells, the battery cells are connected through the conducting bar (3), and each battery cell is provided with an explosion-proof valve; the method is characterized in that: the battery pack is characterized by also comprising a battery pack upper cover (1), a battery fireproof plate (2) and a battery pack base (5);
the battery pack upper cover (1) is connected with the battery pack base (5) to form a closed space;
the battery fireproof plate (2), the conductive bar (3) and the electric core group (4) are arranged in the closed space;
the battery fireproof plate (2) is connected with the battery pack upper cover (1), and a plurality of independent exhaust spaces are formed between the battery fireproof plate (2) and the battery pack upper cover (1);
the exhaust space is communicated with the atmosphere outside the power battery pack through an exhaust piece;
and an opening (21) communicated with the exhaust space is formed in the position, corresponding to the explosion-proof valve on the battery cell, on the battery fireproof plate (2).
2. The power battery pack for battery thermal runaway protection of claim 1, wherein: the upper surface of the battery fireproof plate (2) is bonded on the battery pack upper cover (1), the lower surface of the battery fireproof plate (2) is bonded on the conductive bar (3), and the conductive bar (3) is welded on the battery core.
3. The power battery pack for battery thermal runaway protection according to claim 1 or 2, wherein: the plurality of battery cores are arranged in a plurality of rows along a set direction.
4. The power battery pack for battery thermal runaway protection of claim 3, wherein: a plurality of rows of openings (21) are formed in the battery fireproof plate (2), the openings (21) correspond to the explosion-proof valves on the battery cores one by one, and the size of each opening (21) is larger than that of each explosion-proof valve; the non-hole area (22) on the battery fireproof plate (2) corresponds to the position of the conductive bar (3).
5. The power battery pack for battery thermal runaway protection of claim 4, wherein: a plurality of transverse bulges (11) are arranged on the battery pack upper cover (1), and the transverse bulges (11) are respectively arranged in one-to-one correspondence with the plurality of rows of openings (21) on the battery fireproof plate (2); the non-protruding area (12) of the battery pack upper cover (1) is correspondingly bonded with the non-opening area (22) of the battery fireproof plate (2), so that the transverse protrusion (11) and the battery fireproof plate (2) form the exhaust space.
6. The power battery pack for battery thermal runaway protection as claimed in claim 1 or 2 or 4 or 5, wherein: the conductive bar (3) is welded on the top of the battery core.
7. The power battery pack for battery thermal runaway protection of claim 6, wherein: the bottom of the battery core is bonded on the battery pack base (5).
8. The power battery pack for battery thermal runaway protection as claimed in claim 1 or 2 or 4 or 5 or 7, wherein: the peripheral edge of the battery pack upper cover (1) is combined with the battery pack base (5) through a sealing surface.
9. The power battery pack for battery thermal runaway protection of claim 8, wherein: the exhaust piece is arranged on the battery pack base (5).
10. A vehicle, characterized in that: a power battery pack employing the battery thermal runaway protection of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222261687.7U CN218385627U (en) | 2022-08-26 | 2022-08-26 | Power battery pack for battery thermal runaway protection and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222261687.7U CN218385627U (en) | 2022-08-26 | 2022-08-26 | Power battery pack for battery thermal runaway protection and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218385627U true CN218385627U (en) | 2023-01-24 |
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ID=84969215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222261687.7U Active CN218385627U (en) | 2022-08-26 | 2022-08-26 | Power battery pack for battery thermal runaway protection and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218385627U (en) |
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2022
- 2022-08-26 CN CN202222261687.7U patent/CN218385627U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 401133 room 208, 2 house, 39 Yonghe Road, Yu Zui Town, Jiangbei District, Chongqing Patentee after: Deep Blue Automotive Technology Co.,Ltd. Address before: 401133 room 208, 2 house, 39 Yonghe Road, Yu Zui Town, Jiangbei District, Chongqing Patentee before: CHONGQING CHANGAN NEW ENERGY AUTOMOBILE TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |