CN216648483U - Battery module and battery pack - Google Patents
Battery module and battery pack Download PDFInfo
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- CN216648483U CN216648483U CN202123152374.XU CN202123152374U CN216648483U CN 216648483 U CN216648483 U CN 216648483U CN 202123152374 U CN202123152374 U CN 202123152374U CN 216648483 U CN216648483 U CN 216648483U
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- end 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 relates to the technical field of batteries, and provides a battery module and a battery pack. The battery module includes: at least two batteries; a first end plate; the first end plate and the second end plate are arranged oppositely to clamp the battery; the first fixing piece is connected with the first end plate, the first fixing piece is connected with the second end plate, and at least part of the first fixing piece is positioned at the top end or the bottom end of the battery; the second fixing piece is connected with the first end plate and the second end plate and is positioned at the side end of the battery; wherein, the intensity of first mounting and second mounting is different. Because at least part of the first fixing member is positioned at the top end or the bottom end of the battery, and the second fixing member is positioned at the side end of the battery, the first end plate and the second end plate can be fixed from different positions of the battery, so that the battery is reliably fixed between the first end plate and the second end plate, and the stability of the battery module is improved.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery module and a battery pack.
Background
In the related art, the battery module is mostly fixed by a plurality of straps, that is, the straps form a closed structure along the circumferential direction of the battery module to fix each battery. However, the plurality of straps fix the batteries in the same direction, so that the problem of looseness is easily caused.
SUMMERY OF THE UTILITY MODEL
The utility model provides a battery module and a battery pack, which are used for improving the performance of the battery module.
According to a first aspect of the present invention, there is provided a battery module including:
at least two batteries;
a first end plate;
the first end plate and the second end plate are arranged oppositely to clamp the battery;
the first fixing piece is connected with the first end plate, the first fixing piece is connected with the second end plate, and at least part of the first fixing piece is positioned at the top end or the bottom end of the battery;
the second fixing piece is connected with the first end plate and the second end plate, and the second fixing piece is positioned at the side end of the battery;
wherein, the intensity of first mounting and second mounting is different.
The battery module comprises at least two batteries, a first end plate, a second end plate, a first fixing piece and a second fixing piece, wherein the first fixing piece and the second fixing piece with different strengths fix the batteries between the first end plate and the second end plate. Because at least part of the first fixing member is positioned at the top end or the bottom end of the battery, and the second fixing member is positioned at the side end of the battery, the first end plate and the second end plate can be fixed from different positions of the battery, so that the battery is reliably fixed between the first end plate and the second end plate, and the stability of the battery module is improved.
According to a second aspect of the present invention, a battery pack is provided, which includes the above battery module.
The battery pack comprises a battery module, wherein the battery module comprises at least two batteries, a first end plate, a second end plate, a first fixing piece and a second fixing piece, and the first fixing piece and the second fixing piece with different strengths fix the batteries between the first end plate and the second end plate. Because at least part of the first fixing member is positioned at the top end or the bottom end of the battery, and the second fixing member is positioned at the side end of the battery, the first end plate and the second end plate can be fixed from different positions of the battery, so that the battery is reliably fixed between the first end plate and the second end plate, and the stability of the battery module is improved.
Drawings
For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may be arranged differently as is known in the art. Further, in the drawings, like reference characters designate the same or similar parts throughout the several views. Wherein:
fig. 1 is a schematic view illustrating the structure of a battery module according to an exemplary embodiment;
fig. 2 is a partial structural view illustrating a battery module according to an exemplary embodiment.
The reference numerals are explained below:
10. a battery; 11. a pole assembly; 12. a bus bar; 20. a first end plate; 30. a second end plate; 40. a first fixing member; 41. a fastener; 50. a second fixing member; 60. and a buffer structure.
Detailed Description
The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is, therefore, to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.
In the description of the present disclosure, unless otherwise explicitly specified or limited, the terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, reference to "the" object or "an" object is also intended to mean one of many such objects possible.
The terms "connected," "secured," and the like are to be construed broadly and unless otherwise stated or indicated, and for example, "connected" may be a fixed connection, a removable connection, an integral connection, an electrical connection, or a signal connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood by those skilled in the art as the case may be.
Further, in the description of the present disclosure, it is to be understood that the directional words "upper", "lower", "inner", "outer", etc., which are described in the exemplary embodiments of the present disclosure, are described at the angles shown in the drawings, and should not be construed as limiting the exemplary embodiments of the present disclosure. It will also be understood that, in this context, when an element or feature is referred to as being "on", "under", or "inner", "outer" with respect to another element(s), it can be directly on "," under ", or" inner "," outer "with respect to the other element(s), or indirectly on", "under", or "inner", "outer" with respect to the other element(s) via intervening elements.
An embodiment of the present invention provides a battery module, referring to fig. 1 and 2, the battery module includes: at least two batteries 10; a first end plate 20; a second end plate 30, the first end plate 20 being disposed opposite to the second end plate 30 to hold the battery 10; a first fixing member 40, the first fixing member 40 being connected to the first end plate 20, the first fixing member 40 being connected to the second end plate 30, at least a portion of the first fixing member 40 being located at a top end or a bottom end of the battery 10; a second fixing member 50, the second fixing member 50 being connected to the first end plate 20, the second fixing member 50 being connected to the second end plate 30, the second fixing member 50 being located at a side end of the battery 10; wherein, the strength of the first fixing member 40 and the second fixing member 50 is different.
The battery module according to one embodiment of the present invention includes at least two batteries 10, a first end plate 20, a second end plate 30, a first fixing member 40, and a second fixing member 50, and the first fixing member 40 and the second fixing member 50 having different strengths fix the respective batteries 10 between the first end plate 20 and the second end plate 30. Since at least a portion of the first fixing member 40 is located at the top or bottom end of the battery 10 and the second fixing member 50 is located at the side end of the battery 10, the fixing of the first and second end plates 20 and 30 can be achieved from different positions of the battery 10, so that the battery 10 is reliably fixed between the first and second end plates 20 and 30, thereby improving the stability of the battery module.
It should be noted that the battery module includes a plurality of batteries 10, and the plurality of batteries 10 are sequentially stacked in a predetermined direction to form a stacked module. The battery 10 has a top end, a bottom end and side ends, the top end and the bottom end being disposed opposite to each other, and the side ends being disposed around the top end and the bottom end, thereby connecting the top end and the bottom end, for example, the battery 10 may have a substantially rectangular structure, at this time, the side ends include 4 surfaces, it is further understood that the stack module is placed on the ground, the bottom end of the battery 10 is in contact with the ground, the bottom ends of the plurality of batteries 10 form the bottom end of the stack module, the top ends of the plurality of batteries 10 form the top end of the stack module, and accordingly, the side ends of the stack module are disposed around the bottom end and the top end of the stack module.
The battery 10 includes a cell and an electrolyte, and a minimum unit capable of performing an electrochemical reaction such as charge/discharge. The battery cell refers to a unit formed by winding or laminating a stack including a first electrode, a separator, and a second electrode. When the first electrode is a positive electrode, the second electrode is a negative electrode. Wherein the polarities of the first electrode and the second electrode can be interchanged. The battery cell is arranged in the battery shell, the battery 10 comprises a pole component 11, the pole component 11 is arranged on the battery shell, and the pole component 11 is electrically connected with the battery cell.
In one embodiment, the first fastener 40 is a first cable tie and the second fastener 50 is a second cable tie.
In one embodiment, the two ends of the first fixing member 40 can be connected to the first end plate 20 and the second end plate 30, respectively, and at least a portion of the first fixing member 40 is located at the top end or the bottom end of the battery 10, so that on the basis of ensuring that the first fixing member 40 reliably connects the first end plate 20 and the second end plate 30, the problem of heavy weight caused by the overlong first fixing member 40 can be avoided. One end of the first fixing member 40 may be connected to a first side of the first end plate 20 adjacent to the battery 10, or one end of the first fixing member 40 may be connected to a second side of the first end plate 20 facing away from the battery 10, or one end of the first fixing member 40 may be connected between the first side and the second side of the first end plate 20, for example, the top or the bottom of the first end plate 20. The other end of the first fixing member 40 may be connected to a first side of the second end plate 30 close to the battery 10, or the other end of the first fixing member 40 may be connected to a second side of the second end plate 30 away from the battery 10, or the other end of the first fixing member 40 may be connected between the first side and the second side of the second end plate 30, for example, the top or the bottom of the second end plate 30.
Specifically, the first fastener 40 may be snapped, glued, riveted, or otherwise connected to the first end panel 20 by a fastener 41, as shown in FIG. 2. The first fastener 40 may snap, adhere, rivet, or be attached to the second end panel 30 by a fastener 41. The fasteners 41 may be screws, bolts, keys, or the like. The first fixing member 40 may be connected with the first end plate 20 by at least two fasteners 41. The first fixing member 40 may be connected with the second end plate 30 by at least two fasteners 41.
At least a portion of the first fixing member 40 is located at the top or bottom end of the battery 10, i.e., at least a portion of the first fixing member 40 is located at the top or bottom end of the stacked module. In this embodiment, the top end and the bottom end of the stacking module may have the first fixing member 40. Alternatively, the top end of the stacking module may have the first fixing member 40 as described above, as shown in fig. 1. Alternatively, the bottom end of the stacking module may have the first fixing member 40.
In one embodiment, the first fixing member 40 may be disposed around the top end of the battery 10, the first end plate 20, the bottom end of the battery 10, and the second end plate 30, so as to fix the first end plate 20 and the second end plate 30 in the first fixing member 40, and at this time, the first fixing member 40 forms a circumferentially closed structure. The first fixing member 40 may be fixedly coupled to the first end plate 20, and the first fixing member 40 may be fixedly coupled to the second end plate 30. Alternatively, the first fixing member 40 and the first end plate 20 may be connected only in contact, and the first fixing member 40 and the second end plate 30 may be connected only in contact.
In one embodiment, the two ends of the second fixing member 50 can be connected to the first end plate 20 and the second end plate 30, respectively, and at least a portion of the second fixing member 50 is located at a side portion of the battery 10, so that the problem of weight increase due to the overlong second fixing member 50 can be avoided on the basis of ensuring that the second fixing member 50 is reliably connected to the first end plate 20 and the second end plate 30. One end of the second fixing member 50 may be connected to a first side of the first end plate 20 adjacent to the battery 10, or one end of the second fixing member 50 may be connected to a second side of the first end plate 20 facing away from the battery 10, or one end of the second fixing member 50 may be connected between the first side and the second side of the first end plate 20. The other end of the second fixing member 50 may be connected to a first side of the first end plate 20 close to the battery 10, or the other end of the second fixing member 50 may be connected to a second side of the first end plate 20 away from the battery 10, or the other end of the second fixing member 50 may be connected between the first side and the second side of the first end plate 20.
Specifically, the second fixing member 50 may be snapped, bonded, riveted, or connected by a fastener to the first end plate 20. The second fastener 50 may snap, adhere, rivet, or be attached with a fastener to the second end panel 30. The fasteners may be screws, bolts, keys, etc. The first fixing member 40 may be connected with the first end plate 20 by at least two fasteners. The first fixing member 40 may be connected to the second end plate 30 by at least two fasteners.
In one embodiment, as shown in fig. 1, the second fixing member 50 is disposed around the side end of the battery 10 to fix the first and second end plates 20 and 30 in the second fixing member 50. The second fixing member 50 forms a circumferentially closed structure, and the second fixing member 50 is disposed around the side ends of the battery module, so that the first and second end plates 20 and 30 reliably fix the battery 10. The second fixing member 50 may be fixedly coupled to the first end plate 20 and the second fixing member 50 may be fixedly coupled to the second end plate 30, or the second fixing member 50 may be coupled to the first end plate 20 only in contact and the second fixing member 50 may be coupled to the second end plate 30 only in contact.
The first fixing member 40 and the second fixing member 50 have different strengths, that is, the first fixing member 40 and the second fixing member 50 may be made of the same material, but have different structural strengths, for example, a metal material or a plastic material. Alternatively, the first fixing member 40 and the second fixing member 50 may be made of different materials, so that the strength of the first fixing member 40 and the second fixing member 50 is not the same.
The first fixing member 40 and the second fixing member 50 have different strengths so as to prevent the battery 10 from being excessively pressed, and the first fixing member 40 and the second fixing member 50 can be matched to achieve reliable fixing of the battery module to a certain extent.
It should be noted that the first fixing member 40 and the second fixing member 50 are made of different materials, the material of the first fixing member 40 may be a metal material, and the material of the second fixing member 50 may be a plastic material.
In one embodiment, the strength of the first fixing member 40 may be greater than that of the second fixing member 50, so that the fixing requirement of the battery 10 may be met on the basis of ensuring reliable fixing of the battery module, and the problem of damage to the battery 10 is avoided.
In one embodiment, the second fixing member 50 includes a buffer portion so that a buffer space is formed between the second fixing member 50 and the battery 10 to prevent the second fixing member 50 from damaging the battery 10. The buffer part may be in direct contact with the battery 10, or the second fixing member 50 may have a certain gap from the battery 10.
The second fixing member 50 may include only the buffer portion, for example, the second fixing member 50 may be made of an elastic material, such as plastic. Alternatively, the second mount 50 may include a rigid portion and a buffer portion, the buffer portion facing the battery 10, the rigid portion may be made of a metal material, and the buffer portion may be made of an elastic material.
In one embodiment, the second fixing member 50 is a plastic band, which not only enables the second fixing member 50 to have a certain buffering capacity and avoid damaging the battery 10, but also reduces the weight of the battery module due to the relatively low weight of the second fixing member 50.
In one embodiment, the post assembly 11 of the battery 10 may be located at the top end of the battery 10.
In one embodiment, the pole assembly 11 of the battery 10 is located at the side end of the battery 10, so as to prevent the first fixing member 40 from damaging the pole assembly 11.
The individual cells 10 of the battery module can be connected in series or in parallel by means of a bus bar 12, i.e. the bus bar 12 connects the two pole assemblies 11 of two cells 10. When the second fixing member 50 includes the buffer portion, the second fixing member 50 prevents damage to the pole post assembly 11, the bus bar 12, and information output elements such as a Flexible Printed Circuit (FPC), and improves the structural reliability of the battery module as a whole.
In one embodiment, the pole assembly 11 is disposed on the surface of the battery 10 perpendicular to the stacking direction of the respective batteries 10 of the battery module, so that the second fixing member 50 can be prevented from damaging the pole assembly 11.
The battery 10 may have a substantially rectangular structure, and the lateral ends of the battery 10 include two opposite large surfaces and two opposite small surfaces, the large surfaces of the adjacent batteries 10 being oppositely disposed, and the pole assembly 11 may be disposed on the large surfaces. The battery 10 may include two pole assemblies 11, and the two pole assemblies 11 may be disposed on two large surfaces, respectively, or the two pole assemblies 11 may be disposed on one large surface at the same time, which is not limited herein. The pole assemblies 11 are located at the end sides of the large surface, thereby facilitating the connection of adjacent cells 10 by the bus bar 12.
In one embodiment, a projection of the pole assembly 11 toward the surface of the second fixing member 50 is at least partially misaligned with the second fixing member 50, so that the second fixing member 50 is disposed away from the pole assembly 11, and the battery module is prevented from being damaged by vibration.
In one embodiment, the first fixing member 40 is a steel band, so that the strength of the first fixing member 40 can be secured, thereby improving the stability of the battery module.
In one embodiment, the first fastener 40, and/or the second fastener 50 is at least two, thereby ensuring a secure fastening of the first end plate 20 and the second end plate 30.
Referring to fig. 1, the number of the first fixing members 40 may be at least two, for example, 3, the first fixing member 40 is located at the top end of the battery 10, the number of the second fixing members 50 is one, and the second fixing member 50 is located near the bottom end of the battery 10, so as to avoid the pole assembly 11.
In one embodiment, as shown in fig. 1 and 2, the battery module further includes: and at least one buffer structure 60, wherein the buffer structure 60 is positioned between the first fixing member 40 and the battery 10, so that the first fixing member 40 is prevented from damaging the battery 10. At least two buffer structures 60 may be spaced apart from one first fixing member 40 and the battery 10. The cushioning structure 60 may be a rectangular block structure.
In one embodiment, the buffer structure 60 may be made of an insulating material such as foam, rubber, etc., and the buffer space is provided, so that the electrical connection between the first fixing member 40 and the battery 10 can be avoided.
In some embodiments, it is not excluded that the battery module may include side plates, which may be two, connected to the first and second end plates 20 and 30 to form an installation space in which the respective batteries 10 are placed, and the second fixing member 50 may be wound around the side plates.
It should be noted that the first end panel 20 and the second end panel 30 may be identical in structure or the first end panel 20 and the second end panel 30 may not be identical in structure.
An embodiment of the utility model also provides a battery pack, which comprises the battery module.
The battery pack according to one embodiment of the present invention includes a battery module including at least two batteries 10, a first end plate 20, a second end plate 30, a first fixing member 40, and a second fixing member 50, and the first fixing member 40 and the second fixing member 50 having different strengths fix the respective batteries 10 between the first end plate 20 and the second end plate 30. Since at least a portion of the first fixing member 40 is located at the top or bottom end of the battery 10 and the second fixing member 50 is located at the side end of the battery 10, the fixing of the first and second end plates 20 and 30 can be achieved from different positions of the battery 10, so that the battery 10 is reliably fixed between the first and second end plates 20 and 30, thereby improving the stability of the battery module.
In one embodiment, the battery pack further comprises a battery box, the battery modules are arranged in the battery box, and at least two battery modules can be arranged in the battery box. The heat-conducting structure glue can be arranged between the battery module and the battery box body, so that the battery module can be connected with the heat exchange plate of the battery box body through the heat-conducting structure glue. And heat-conducting structural adhesive can be arranged between the battery module and the top cover of the battery box body.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice in the art to which the disclosure pertains. It is intended that the specification and example embodiments be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (12)
1. A battery module, comprising:
at least two batteries (10);
a first end plate (20);
a second end plate (30), the first end plate (20) being disposed opposite the second end plate (30) to clamp the battery (10);
a first securing member (40), the first securing member (40) being connected to the first end plate (20), the first securing member (40) being connected to the second end plate (30), at least a portion of the first securing member (40) being located at a top end or a bottom end of the cell (10);
a second fixing member (50), the second fixing member (50) being connected to the first end plate (20), the second fixing member (50) being connected to the second end plate (30), the second fixing member (50) being located at a side end of the battery (10);
wherein the first fixing member (40) and the second fixing member (50) have different strengths.
2. The battery module according to claim 1, wherein the strength of the first fixing member (40) is greater than the strength of the second fixing member (50).
3. The battery module according to claim 1, wherein the second fixing member (50) includes a buffer portion.
4. The battery module according to claim 1, wherein both ends of the first fixing member (40) connect the first end plate (20) and the second end plate (30), respectively.
5. The battery module according to claim 1, wherein the second fixing member (50) is provided around the side ends of the battery (10) to fix the first and second end plates (20, 30) in the second fixing member (50).
6. The battery module according to any one of claims 1 to 5, wherein the first fixing member (40) is a steel tie and the second fixing member (50) is a plastic tie.
7. The battery module according to any one of claims 1 to 5, characterized in that the battery (10) comprises a pole assembly (11), the pole assembly (11) being located at a lateral end of the battery (10).
8. The battery module according to claim 7, wherein the post assembly (11) is provided to a surface of the battery (10) perpendicular to a stacking direction of each of the batteries (10) of the battery module.
9. The battery module according to claim 8, wherein a projection of the pole assembly (11) onto the surface of the second fixing member (50) is at least partially misaligned with the second fixing member (50).
10. The battery module according to any one of claims 1 to 5, wherein the first fixing member (40), and/or the second fixing member (50) is at least two.
11. The battery module according to any one of claims 1 to 5, further comprising:
at least one cushioning structure (60), said cushioning structure (60) being located between said first mount (40) and said battery (10).
12. A battery pack, comprising the battery module according to any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123152374.XU CN216648483U (en) | 2021-12-15 | 2021-12-15 | Battery module and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123152374.XU CN216648483U (en) | 2021-12-15 | 2021-12-15 | Battery module and battery pack |
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| CN216648483U true CN216648483U (en) | 2022-05-31 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023193334A1 (en) * | 2022-04-06 | 2023-10-12 | 宁德时代新能源科技股份有限公司 | Battery and electrical device |
| WO2024093001A1 (en) * | 2022-11-04 | 2024-05-10 | 厦门海辰储能科技股份有限公司 | Battery module, energy storage device, and electric device |
-
2021
- 2021-12-15 CN CN202123152374.XU patent/CN216648483U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023193334A1 (en) * | 2022-04-06 | 2023-10-12 | 宁德时代新能源科技股份有限公司 | Battery and electrical device |
| WO2024093001A1 (en) * | 2022-11-04 | 2024-05-10 | 厦门海辰储能科技股份有限公司 | Battery module, energy storage device, and electric device |
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