CN215299386U - Battery pack and electric automobile - Google Patents
Battery pack and electric automobile Download PDFInfo
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- CN215299386U CN215299386U CN202121512425.2U CN202121512425U CN215299386U CN 215299386 U CN215299386 U CN 215299386U CN 202121512425 U CN202121512425 U CN 202121512425U CN 215299386 U CN215299386 U CN 215299386U
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- battery
- battery pack
- box body
- electrically connected
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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 an electric automobile technical field especially relates to a battery package and electric automobile. The battery pack comprises a box body, battery modules and a water cooling plate, wherein at least two groups of battery modules are arranged in the box body in a first direction and are electrically connected, each battery module comprises at least two battery cell stacking bodies which are arranged in a second direction and are electrically connected, each battery cell stacking body comprises a plurality of single battery cells which are arranged in the first direction and are electrically connected, the second direction is vertical to the first direction, and the first direction and the second direction are both parallel to the plane where the length direction of the box body is located, so that the battery cell stacking bodies with proper quantity and the battery modules with proper quantity can be conveniently selected according to the installation space of the whole vehicle, the energy density of the battery pack is improved, and the connection mode in the battery pack can be simplified; the plane of the water cooling plate is parallel to the plane of the length direction of the box body, and the water cooling plate is arranged in the box body and positioned above all the battery modules so as to conveniently disassemble, assemble and maintain the battery modules in the battery pack.
Description
Technical Field
The utility model relates to an electric automobile technical field especially relates to a battery package and electric automobile.
Background
The battery pack is used as an important component of an electric automobile, and the weight energy density ratio or the volume energy density ratio of the battery pack is one of important indexes for measuring the performance of the battery pack. The existing battery pack is mainly formed by assembling a plurality of monomer battery cores into a battery module and then packaging a plurality of battery modules into the battery pack. In addition, the water-cooling plate in the existing battery pack is mostly arranged below the battery module (electric core or battery module), so that the battery module in the battery pack is not convenient to disassemble, assemble and maintain, and the labor and time cost is increased.
Therefore, a battery pack having high energy density is urgently needed to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a battery package, energy density is big, and connected mode is simple, and is convenient for carry out dismouting and maintenance, and is with low costs to the battery module in the battery package.
Another object of the utility model is to provide an electric automobile, through using above-mentioned battery package, can guarantee under the high condition of whole car battery energy density, realize whole car lightweight design.
In order to realize the purpose, the following technical scheme is provided:
in a first aspect, a battery pack is provided, including:
a box body;
the battery module comprises at least two groups of battery modules which are arranged in a first direction and are electrically connected in the box body, the battery module comprises at least two battery cell stacking bodies which are arranged in a second direction and are electrically connected, each battery cell stacking body comprises a plurality of single battery cells which are arranged in the first direction and are electrically connected, the second direction is vertical to the first direction, and the first direction and the second direction are both parallel to the plane of the length direction of the box body;
the plane of the water cooling plate is parallel to the plane of the box body in the length direction, and the water cooling plate is arranged in the box body and positioned above all the battery modules.
As an alternative to the battery pack, in one of the cell stack bodies, adjacent two of the unit cells are connected in series.
As an alternative to the battery pack, in one of the cell stacked bodies, two adjacent single cells are bonded to each other by a double-sided adhesive tape.
As an alternative to the battery pack, the double-sided adhesive tape has a thickness of 0.01mm or more.
As an alternative to the battery pack, a heat insulating material is provided between adjacent two of the unit cells in one of the cell stacked bodies.
As an alternative to the battery pack, the thickness of the heat insulating material ranges from 1mm to 20 mm.
As an alternative to the battery pack, the battery pack further includes a heat transfer medium disposed between the battery module and the water-cooling plate.
As an alternative of the battery pack, the battery pack further includes a sampling terminal, and the sampling terminal is inserted between two adjacent battery cell stacked bodies in each group of the battery modules.
As an alternative to the battery pack, the sampling terminal is located above the battery module.
As an alternative of the battery pack, the battery pack further includes a flexible circuit board, and the sampling terminals on the plurality of sets of battery modules are electrically connected through the flexible circuit board.
In a second aspect, an electric vehicle is provided, comprising a chassis and a battery pack as described in any one of the above, the battery pack being disposed on the chassis.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a battery pack, including the box, battery module and water-cooling board, at least two sets of battery modules arrange and the setting of electricity connection along first direction in the box, battery module includes at least two electric core stacks of arranging and electricity connection along the second direction, electric core stack includes a plurality of monomer electric cores of arranging and electricity connection along first direction, the second direction is mutually perpendicular with first direction, and first direction and second direction all are parallel with box length direction place plane, be convenient for select the battery stack of suitable quantity and the battery module of suitable quantity according to whole car installation space, improve battery pack energy density, and can simplify the connected mode in the battery pack; the plane of the water cooling plate is parallel to the plane of the length direction of the box body, and the water cooling plate is arranged in the box body and positioned above all the battery modules so as to conveniently disassemble, assemble and maintain the battery modules in the battery pack.
The utility model provides an electric automobile through using above-mentioned battery package, can guarantee under the high condition of whole car battery energy density, realizes whole car lightweight design.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is an exploded schematic view of a battery pack according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a plurality of groups of battery modules according to an embodiment of the present invention;
fig. 3 is an exploded schematic view of a resistor module according to an embodiment of the present invention;
fig. 4 is an exploded schematic view of a chassis according to an embodiment of the present invention.
Reference numerals:
100-a chassis;
1-a box body; 11-a frame; 12-an upper cover plate; 13-lower cover plate;
2-a battery module; 21-a cell stack; 211-cell core;
3-water cooling plate;
4-a heat-conducting medium;
5-a sampling terminal;
6-flexible circuit board.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution of the present invention is further described below by referring to the drawings and the detailed description.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
As shown in fig. 1 to 3, the present embodiment provides a battery pack, including a case 1, battery modules 2 and a water-cooling plate 3, where at least two sets of battery modules 2 are arranged in a first direction and electrically connected in the case 1, each battery module 2 includes at least two cell stacks 21 arranged in a second direction and electrically connected, each cell stack 21 includes a plurality of unit cells 211 arranged in the first direction and electrically connected, the second direction is perpendicular to the first direction, and the first direction and the second direction are both parallel to a plane where a length direction of the case 1 is located, so that a suitable number of the cell stacks 21 and a suitable number of the battery modules 2 are selected according to an installation space of a whole vehicle, energy density of the battery pack is improved, and a connection manner in the battery pack is simplified; the plane of water-cooling board 3 place is parallel with 1 length direction place plane of box, and water-cooling board 3 sets up in box 1 and is located all battery module 2's top to in battery package battery module 2 carry out dismouting and maintenance.
In short, a plurality of single battery cells 211 arranged in a first direction and electrically connected to each other form a battery cell stack 21, and the width of the battery cell stack 21, that is, the width of a single battery module 2, can be adjusted by selecting different numbers of single battery cells 211; at least two electric core pile bodies 21 arranged along the second direction and electrically connected form a group of battery modules 2, the length of the battery modules 2 can be adjusted by selecting the electric core pile bodies 21 with different quantities, and finally, the battery modules 2 with proper quantities can be selected according to the installation space of the whole vehicle, so that the layout mode of the battery modules 2 can be better and reasonably arranged, the energy density of a battery pack is improved, and the connection mode between the battery modules 2 is simplified.
Illustratively, the size of the battery module 2 can be flexibly designed according to the requirements of the whole vehicle, and the length: 300 mm-2500 mm, width: 30 mm-150 mm, height: 70 mm-200 mm.
Preferably, the case 1 includes a frame 11, an upper cover plate 12 and a lower cover plate 13, and the upper cover plate 12 and the lower cover plate 13 are detachably provided to cover upper and lower end surfaces of the frame 11 to form a receiving cavity to receive the battery module 2.
The water cooling plate 3 is arranged above the battery module 2, so that the battery module 2 can be directly disassembled or maintained after the cover plate 13 is directly disassembled, and the operation efficiency is improved. Optionally, the battery pack further includes a heat conducting medium 4, and the heat conducting medium 4 is disposed between the battery module 2 and the water cooling plate 3. The exhaust of electric core pile body 21 can be towards whole car below, reduces the thermal runaway risk, improves whole car security.
Preferably, in one cell stack 21, two adjacent unit cells 211 are connected in series. Specifically, in the single cell stack body 21, the electrical connection line connects a plurality of unit cells 211 arranged in an S-shape in series in the first direction. In one set of the battery modules 2, the end portions of the adjacent two cell stack bodies 21 are electrically connected. The electrical connection wires of the plurality of sets of battery modules 2 connect the plurality of sets of battery modules 2 arranged in the first direction in series in an S-shape.
Optionally, in one cell stack body 21, two adjacent single battery cells 211 are bonded by a double-sided adhesive tape to ensure the connection strength between the single battery cells 211. Preferably, the thickness of the double-sided adhesive tape is greater than or equal to 0.01mm, so that the connection strength between the monomer battery cells 211 is ensured. Note that, in the case of ensuring the connection strength between the unit cells 211, the smaller the thickness of the double-sided adhesive tape, the better.
Optionally, in one cell stack body 21, a thermal insulation material is disposed between two adjacent single battery cells 211, so as to reduce the thermal conduction of the two adjacent single battery cells 211 on the surface, avoid the thermal expansion of the cell stack body 21 to increase the thickness of the cell stack body in the first direction, and reduce the risk of thermal runaway. Preferably, the thickness of the heat insulating material ranges from 1mm to 20 mm.
Optionally, the battery pack further includes a sampling terminal 5, and the sampling terminal 5 is inserted between two adjacent battery cell stacked bodies 21 in each group of battery modules 2. The sampling terminal 5 is used for collecting data information of the battery module 2 so as to manage the battery pack. Preferably, sampling terminal 5 is located the top of battery module 2, and on the one hand sampling terminal 5 of being convenient for is connected with the battery management system electricity, and on the other hand is convenient for the exhaust of battery module 2 towards the below of battery module 2, reduces the thermal runaway risk, improves the security.
Further, the battery pack further comprises a flexible circuit board 6, and the sampling terminals 5 on the plurality of groups of battery modules 2 are electrically connected through the flexible circuit board 6.
As shown in fig. 4, the present embodiment further provides an electric vehicle, which includes a chassis 100 and the battery pack as described above, where the battery pack is disposed on the chassis 100. Preferably, the frame 11 of the box 1 of the battery pack is integrated on the frame of the chassis 100, and the chassis 100 and the box 1 share one frame structure, so that the weight of the electric vehicle can be reduced, a larger installation space can be provided for the battery module 2, the energy density of the battery is improved, and the endurance mileage of the electric vehicle is increased.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A battery pack, comprising:
a box body (1);
the battery module (2) is arranged in the box body (1) in a first direction and electrically connected with at least two groups of battery modules (2), the battery module (2) comprises at least two battery cell stacking bodies (21) which are arranged in a second direction and electrically connected with each other, each battery cell stacking body (21) comprises a plurality of single battery cells (211) which are arranged in the first direction and electrically connected with each other, the second direction is perpendicular to the first direction, and the first direction and the second direction are both parallel to the plane where the length direction of the box body (1) is located;
the plane of the water cooling plate (3) is parallel to the plane of the box body (1) in the length direction, and the water cooling plate (3) is arranged in the box body (1) and is positioned above all the battery modules (2).
2. The battery pack according to claim 1, wherein in one of the cell stack bodies (21), two adjacent unit cells (211) are connected in series.
3. The battery pack according to claim 2, wherein in one of the cell stack bodies (21), two adjacent unit cells (211) are bonded to each other by a double-sided adhesive.
4. The battery pack of claim 3, wherein the double-sided adhesive tape has a thickness greater than or equal to 0.01 mm.
5. The battery pack according to claim 2, wherein a heat insulating material is provided between adjacent two of the unit cells (211) in one of the cell stack bodies (21).
6. The battery pack according to claim 5, wherein the thermal insulation material has a thickness ranging from 1mm to 20 mm.
7. Battery pack according to any of claims 1 to 6, characterized in that the battery pack further comprises a heat conducting medium (4), the heat conducting medium (4) being arranged between the battery modules (2) and the water-cooled plate (3).
8. The battery pack according to any one of claims 1 to 6, further comprising sampling terminals (5), wherein the sampling terminals (5) are inserted between two adjacent cell stacks (21) in each group of the battery modules (2).
9. The battery pack according to claim 8, further comprising a flexible circuit board (6), wherein the sampling terminals (5) on the plurality of sets of battery modules (2) are electrically connected through the flexible circuit board (6).
10. An electric vehicle, characterized in that it comprises a chassis (100) and a battery pack according to any one of claims 1-9, said battery pack being arranged on said chassis (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121512425.2U CN215299386U (en) | 2021-07-05 | 2021-07-05 | Battery pack and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121512425.2U CN215299386U (en) | 2021-07-05 | 2021-07-05 | Battery pack and electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215299386U true CN215299386U (en) | 2021-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121512425.2U Active CN215299386U (en) | 2021-07-05 | 2021-07-05 | Battery pack and electric automobile |
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| Country | Link |
|---|---|
| CN (1) | CN215299386U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116802889A (en) * | 2022-02-21 | 2023-09-22 | 宁德时代新能源科技股份有限公司 | Battery, electric device, method and equipment for preparing battery |
| WO2023185289A1 (en) * | 2022-04-02 | 2023-10-05 | 合肥国轩高科动力能源有限公司 | Cell-to-pack battery system |
-
2021
- 2021-07-05 CN CN202121512425.2U patent/CN215299386U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116802889A (en) * | 2022-02-21 | 2023-09-22 | 宁德时代新能源科技股份有限公司 | Battery, electric device, method and equipment for preparing battery |
| WO2023185289A1 (en) * | 2022-04-02 | 2023-10-05 | 合肥国轩高科动力能源有限公司 | Cell-to-pack battery system |
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