Battery pack
By using an open structure to fix the conductive busbar in the battery pack, the problem of poor heat dissipation in the closed mounting cavity is solved, achieving efficient heat dissipation of the conductive busbar and the battery assembly, and improving the space utilization of the battery pack.
Patent Information
- Application Number
- CN202423167496.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-12-20
AI Technical Summary
The enclosed mounting cavity cannot meet the heat dissipation requirements of the conductive busbar, resulting in low space utilization of the battery pack.
An open structure is used instead of a closed mounting cavity. The conductive busbar is fixed through the open structure, and heat is dissipated directly from the open area, with the liquid cooling component assisting in heat dissipation.
It improves the heat dissipation efficiency of the busbar, reduces the burden on the liquid cooling components, improves the heat dissipation efficiency of the battery components, and prevents the busbar from detaching.
Smart Images
Figure CN223693273U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to battery pack technical field, concretely relates to a battery pack. BACKGROUND
[0002] When the battery pack is applied to a large vehicle, the battery pack of the large vehicle is usually provided with two battery modules in front and back, and the two battery modules are connected in series by a conductive row with a long length. In order to fix the conductive row, a mounting bracket is usually welded on the bottom plate or the side wall of the battery pack box body, or a buckle is installed, so that additional space is needed for the mounting bracket and the mounting buckle, resulting in low space utilization of the battery pack.
[0003] At present, in order to reduce the use of mounting brackets and buckles, recesses are arranged on the edges of the cover plate and the box body in the circumferential direction, and when the cover plate and the box body are buckled, the recesses of the cover plate and the box body can form a mounting cavity for fixing the conductive row.
[0004] However, in actual use, the closed mounting cavity cannot meet the heat dissipation requirement of the conductive row. SUMMARY
[0005] Therefore, the utility model provides a battery pack to solve the problem that the closed mounting cavity cannot meet the heat dissipation requirement of the conductive row.
[0006] In a first aspect, the utility model provides a battery pack, which comprises:
[0007] a box body provided with a bottom plate and a cover body which are installed in cooperation, and the bottom plate and the cover body surround a containing cavity suitable for installing a battery assembly;
[0008] an open structure arranged at the edge of at least one side of the bottom plate;
[0009] a conductive row arranged in the open structure;
[0010] a plurality of fixing structures arranged in the open structure and used for fixing the conductive row.
[0011] Advantages: in the utility model, the mounting groove used in the prior art is replaced by the open structure, so that the heat of the conductive row can be directly dissipated outward from the opening of the open structure in actual use, thereby meeting the heat dissipation requirement of the conductive row. At the same time, the burden of the liquid cooling assembly in the battery pack is reduced, and a part of the heat dissipation amount can be transferred to the battery assembly, so that the heat dissipation efficiency of the battery assembly is improved. In addition, the fixing structure can fix the conductive row in the open structure, so that the conductive row is prevented from separating from the open structure in use. BRIEF DESCRIPTION OF DRAWINGS
[0012] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the related art, the accompanying drawings needed to be used in the description of the specific embodiments or the related art will be briefly introduced. Obviously, the accompanying drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the premise that they do not pay any creative effort.
[0013] Figure 1 The overall structure diagram of the battery pack in the embodiments of the present application is shown in the figure.
[0014] Figure 2 The internal structure diagram of the battery pack in the embodiments of the present application is shown in the figure. Figure 1
[0015] Figure 3 The enlarged schematic diagram of the G part in the embodiments of the present application is shown in the figure. Figure 2
[0016] Figure 4 The structural schematic diagram of the battery pack in the embodiments of the present application without the installed conductive row is shown in the figure. Figure 3
[0017] The structural schematic diagram of the open structure in the embodiments of the present application is shown in the figure. Figure 5 Figure 3 The structural schematic diagram of the open structure in the embodiments of the present application is shown in the figure.
[0018] Figure 6 Figure 5 The structural schematic diagram of the open structure in the embodiments of the present application is shown in the figure.
[0019] Figure 7 The structural schematic diagram of the fixed binding rib in the embodiments of the present application is shown in the figure.
[0020] Explanation of the reference signs:
[0021] 1, box body; 11, bottom plate; 12, cover body;
[0022] 2, open structure; 21, first baffle; 22, second baffle; 23, support piece;
[0023] 3, conductive row;
[0024] 4, fixed structure; 41, fixed binding rib; 411, tight binding port; 412, insertion end; 42, fixed hole; 43, protective sleeve. Specific embodiments
[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.
[0026] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0027] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements, it can be wireless connection, or it can be wired connection. For ordinary workers in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0028] In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as there is no conflict between them.
[0029] When the battery pack is applied to a large vehicle, the battery pack of the large vehicle is usually provided with two battery modules in front and back, and the two battery modules are connected in series by a conductive row 3 of a relatively long length. In order to fix the conductive row 3, mounting brackets are usually welded on the bottom plate 11 or the side wall of the battery pack box body 1, or buckles are installed, so that additional space needs to be reserved for the mounting brackets and the mounting buckles, resulting in low space utilization of the battery pack. At present, in order to reduce the use of mounting brackets and mounting buckles, recesses are arranged on the edge of the cover plate and the box body 1 in the circumferential direction, and when the cover plate and the box body 1 are buckled, the recesses of the cover plate and the recesses of the box body 1 can form mounting cavities for fixing the conductive row 3. However, in the actual use process, the closed mounting cavities are difficult to meet the heat dissipation demand of the conductive row 3.
[0030] Therefore, the battery pack is provided, so as to solve the problem that the closed installation cavity is difficult to meet the heat dissipation requirement of the conductive row 3.
[0031] The embodiments of the utility model are described below in combination with Figures 1 to 7 , the embodiments of the utility model are described below in combination with
[0032] According to the embodiments of the utility model, on the one hand, a battery pack is provided, which comprises a box body 1, an open structure 2, a conductive row 3 and a fixing structure 4.
[0033] Specifically, in the embodiment, the box body 1 is provided with a bottom plate 11 and a cover 12 which are installed in cooperation, and the bottom plate 11 and the cover 12 surround a containing cavity which is suitable for installing a battery assembly. Of course, a liquid cooling assembly can also be arranged in the containing cavity, and the liquid cooling assembly can dissipate heat for the battery assembly and the conductive row 3. In the embodiment, the arrangement position and the installation mode of the battery assembly and the liquid cooling assembly are not limited, and a person skilled in the art can change them according to actual conditions, as long as the same technical effects can be achieved.
[0034] Further, in the embodiment, the open structure 2 is arranged at the edge of at least one side of the bottom plate 11. Generally, the bottom plate 11 is in a rectangular structure, so the open structure 2 can be arranged on the long side or the wide side of the bottom plate 11 according to actual conditions. In the embodiment, since two battery modules are connected in series, the open structure 2 can be arranged on the long side of the bottom plate 11. The open structure 2 can be provided with an opening at the top, so that the heat of the conductive row 3 can be dissipated outward from the opening at the top.
[0035] Further, in the embodiment, the conductive row 3 is arranged in the open structure 2, and a plurality of fixing structures 4 are arranged in the open structure 2, and the fixing structures 4 can fix the conductive row 3. Of course, the fixing structures 4 need to be made of insulating materials.
[0036] Further, as for the type of the fixing structure 4, the conductive row 3 and the open structure 2 can be fixedly connected or detachably connected. As for the fixed connection, welding, bonding and the like can be adopted. As for the detachable connection, the screw hole mode, the buckle and slot mode, and the magnetic sheet attraction mode can be adopted.
[0037] The detachable connection mode is exemplified as follows. For example, a fixed plate can be additionally arranged at the bottom of the open structure 2, and the number of the fixed plate can be changed by those skilled in the art according to actual conditions, such as 1, 2, 3, 4, etc., a screw hole is arranged on the fixed plate, another screw hole is arranged on the conductive strip 3 corresponding to the screw hole, and then the screw is sequentially threaded through the screw hole on the fixed plate and the screw hole on the conductive strip 3, so as to connect the open structure 2 and the conductive strip 3. Further, when the buckle and the card slot are used for fixing, a buckle can be additionally arranged on the open structure 2, and the number of the buckle can be changed by those skilled in the art according to actual conditions, such as 1, 2, 3, 4, etc., a card slot capable of cooperating with the buckle is arranged on the conductive strip 3 corresponding to the buckle, and then the buckle on the open structure 2 is directly embedded into the card slot on the conductive strip 3, so as to connect the open structure 2 and the conductive strip 3. When the magnetic attraction is used for fixing, a magnetic sheet can be additionally arranged on the open structure 2, and the number of the magnetic sheet can be changed by those skilled in the art according to actual conditions, such as 1, 2, 3, 4, etc., a magnetic sheet capable of attracting the magnetic sheet is arranged on the conductive strip 3 corresponding to the magnetic sheet, and then the magnetic sheet on the open structure 2 is directly aligned and embedded into the magnetic sheet on the conductive strip 3, so as to magnetically connect the open structure 2 and the conductive strip 3.
[0038] Of course, the embodiment only exemplifies the fixed connection mode and the detachable connection mode, but does not limit the same, and those skilled in the art can change it according to actual conditions, as long as the same technical effect can be achieved.
[0039] In this way, the open structure 2 is used to replace the installation groove in the prior art, in actual use, the heat of the conductive strip 3 can be directly dissipated outward from the opening of the open structure 2, so that the heat dissipation demand of the conductive strip 3 can be met. At the same time, the burden of the liquid cooling assembly in the battery pack is reduced, and a part of the heat dissipation amount can be transferred to the battery assembly, so as to improve the heat dissipation efficiency of the battery assembly. In addition, the fixing structure 4 can fix the conductive strip 3 in the open structure 2, so as to prevent the conductive strip 3 from being separated from the open structure 2 in use.
[0040] Further, in an optional embodiment, the open structure 2 comprises a first baffle 21 and a second baffle 22.
[0041] Specifically, in the embodiment, the first baffle 21 is arranged at the outer edge of the bottom plate 11, for example, can be arranged at the outer edge along the length direction of the bottom plate 11, the first baffle 21 is arranged along the vertical direction, so that the first baffle 21 and the bottom plate 11 form an "L" type structure. Further, the second baffle 22 is arranged at the inner side of the bottom plate 11, the second baffle 22 is arranged along the vertical direction, the second baffle 22 corresponds to the first baffle 21, and the second baffle 22 and the first baffle 21 are parallel to each other, and a space for mounting the conductive row 3 is arranged between the second baffle 22 and the first baffle 21. That is, the first baffle 21 and the second baffle 22 together form a mounting groove with the bottom plate 11 for mounting the conductive row 3. The first baffle 21 and the second baffle 22 are groove walls of the mounting groove.
[0042] Further, in the embodiment, the support 23 is arranged on the bottom plate 11 and located in the space, and the support 23 is arranged with a gap at least with one of the first baffle 21 and the second baffle 22. The first baffle 21, the second baffle 22 and the support 23 surround to form the open structure 2.
[0043] That is, the support 23 is arranged at the bottom of the mounting groove to support the conductive row 3, but the support 23 is not completely sealed and connected with the first baffle 21 and the second baffle 22, and the support 23 can be arranged with a gap between the first baffle 21 and the second baffle 22.
[0044] Of course, the mounting mode of the support 23 is only illustrative in the embodiment, but is not limited thereto, and those skilled in the art can change it according to the actual situation, as long as it can achieve the same technical effect.
[0045] In this way, by arranging a gap in the inside of the open structure 2, the heat of the conductive row 3 can not only be dissipated outward from the opening of the open structure 2, but also be dissipated outward from the two sides of the open structure 2, that is, from the gaps between the support 23 and the first baffle 21 and the second baffle 22, so that the heat dissipation capacity of the open structure 2 can be further improved. Moreover, when the heat passes through the liquid cooling assembly inside the cabinet 1, it can also be cooled by the liquid cooling assembly, so that the heat dissipation demand of the conductive row 3 can be met.
[0046] Further, in a preferred embodiment, from the above mounting mode of the support 23, a more preferred embodiment is selected, that is, the support 23 is in close contact with the first baffle 21, and a gap is arranged between the support 23 and the second baffle 22.
[0047] In this way, the support 23 is in close contact with the first baffle 21, and since the first baffle 21 is located at the outer edge of the bottom plate 11, the overall structural strength of the outer edge of the box body 1 can be improved, and damage to the internal battery assembly caused by the battery pack under the action of external force impact can be prevented. Moreover, a gap is provided between the support 23 and the second baffle 22, so that the overall structural strength of the outer edge of the box body 1 is improved, and the heat dissipation capacity of the open structure 2 is not affected, and the heat dissipation requirement of the conductive row 3 can still be met.
[0048] Further, in an optional embodiment, in the vertical direction, the height of the second baffle 22 is A, and the height of the conductive row 3 is B, and the value of A / B is between 0.5 and 1.5. The height unit of the second baffle 22 and the height unit of the conductive row 3 are both mm.
[0049] Further, in an optional embodiment, in the vertical direction, the height of the first baffle 21 is C, and the value of A / C is between 1 and 2. Similarly, the height unit of the first baffle 21 is mm.
[0050] Further, in an optional embodiment, the thickness of the first baffle 21 is D, and the thickness of the second baffle 22 is F, and the value of D / F is between 0.5 and 1. Similarly, the thickness unit of the first baffle 21 and the thickness unit of the second baffle 22 are both mm.
[0051] Further, in an optional embodiment, the plurality of fixing structures 4 can be arranged in close contact. As a preferred embodiment, the adjacent two fixing structures 4 can be arranged with a spacing.
[0052] In this way, the adjacent two fixing structures 4 are arranged with a spacing, so that the conductive row 3 can be fixed in the length direction in sections, thereby reducing the number of fixing structures 4 used while ensuring the stability of the conductive row 3. Moreover, the adjacent two fixing structures 4 are arranged with a spacing, so that the area of the fixing structure 4 covering the conductive row 3 can be reduced, thereby avoiding affecting the heat dissipation of the conductive row 3.
[0053] Further, in an optional embodiment, the fixing structure 4 comprises a fixing binding rib 41 and a fixing hole 42.
[0054] Specifically, in the embodiment, the fixing binding wire 41 is provided with at least one end provided with a tight binding port 411 and the other end provided with an insertion end 412 adapted to be inserted into the tight binding port 411. The tight binding port 411 is provided with an elastic protrusion, and the inner side of the fixing binding wire 41 is provided with a slanted groove adapted to embed the elastic protrusion. After the insertion end 412 is inserted into the tight binding port 411, the one-way protrusion is also embedded in the corresponding slanted groove, thereby realizing the binding function.
[0055] Further, in the embodiment, the fixing hole 42 is arranged on the support 23 and the second baffle 22, and the fixing hole 42 is arranged on the support 23 and the second baffle 22.
[0056] In use, the insertion end 412 of the fixing binding wire 41 sequentially passes through the fixing hole 42 on the support 23 and the second baffle 22, and the tight binding port 411 is larger than the gap between the support 23 and the second baffle 22, so that the tight binding port 411 is clamped between the support 23 and the second baffle 22. Then the insertion end 412 of the fixing binding wire 41 enters the tight binding port 411 to form an annular binding belt for fixing the conductive row 3, thereby realizing the binding of the conductive row 3.
[0057] In this way, the embodiment fixes the conductive row 3 by arranging the tight binding port 411 on the support 23 and the second baffle 22 and then by the fixing binding wire 41. Compared with the traditional fixing method, such as arranging a welding bracket, installing a buckle and other processes and materials in the box 1, no secondary welding or processing is needed, which can reduce the defects of the finished product of the box 1 and improve the production efficiency and yield of the battery pack to a certain extent.
[0058] Further, in an optional embodiment, the fixing structure 4 further comprises a protective sleeve 43 sleeved on the conductive row 3. The protective sleeve 43 matches the conductive row 3, and the annular binding belt is bound on the outer circumference of the protective sleeve 43. It should be noted that the protective sleeve 43 needs to be made of insulating material to ensure that the battery pack can work normally.
[0059] In this way, the embodiment can prevent the fixing binding wire 41 from causing structural damage to the conductive row 3 during installation, and can also prevent the fixing binding wire 41 from being burned when a large current passes through the conductive row 3, thereby playing a certain protection role. At the same time, the protective sleeve 43 indirectly increases the contact area of the fixing binding wire 41 and the conductive row 3, which can further fix the conductive row 3 and improve the stability of the conductive row 3.
[0060] Further, in an optional embodiment, the bottom plate 11 is a liquid cooling plate.
[0061] In this way, the bottom plate 11 is arranged as a liquid cooling plate, and the heat generated by the electrically conductive row 3 during operation can be directly absorbed from the gap by the liquid cooling plate, and compared with the commonly used closed mounting cavity, the heat dissipation effect of the electrically conductive row 3 can be further improved.
[0062] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.
Claims
1. A battery pack, characterized by, The utility model relates to a battery pack fixing device, including: A box (1) is provided with mutually cooperate installation bottom plate (11) and cover (12), bottom plate (11) and cover (12) surround the cavity that is suitable for installing battery assembly is formed; Open structure (2) is arranged in the edge of bottom plate (11) at least one side; Conductive row (3) is arranged in open structure (2); A plurality of fixed structure (4) is arranged in open structure (2), and the conductive row (3) is fixed.
2. The battery pack of claim 1, wherein, The open structure (2) includes: First baffle (21) is arranged in the outer edge of bottom plate (11); Second baffle (22) is arranged in the inner side of bottom plate (11);Second baffle (22) and first baffle (21) are correspondingly arranged, and second baffle (22) and first baffle (21) are parallel to each other, and a space is arranged between second baffle (22) and first baffle (21); Support (23) is arranged on bottom plate (11) and is located in the space;Support (23) is provided with a gap at least with one of first baffle (21), second baffle (22); First baffle (21), second baffle (22) and support (23) surround and form open structure (2).
3. The battery pack of claim 2, wherein, Support (23) is in close contact with first baffle (21), and a gap is arranged between support (23) and second baffle (22).
4. The battery pack of claim 2 or 3, wherein, In the vertical direction, the height of the second baffle (22) is A, the height of the conductive row (3) is B, and the value of A / B is between 0.5 and 1.
5.
5. The battery pack of claim 4, wherein, In the vertical direction, the height of the first baffle (21) is C, and the value of A / C is between 1 and 2.
6. The battery pack of claim 2 or 3, wherein, The thickness of the first baffle (21) is D, the thickness of the second baffle (22) is F, and the value of D / F is between 0.5 and 1.
7. The battery pack of claim 2 or 3, wherein, The adjacent two fixed structures (4) are arranged at intervals.
8. The battery pack of claim 7, wherein, The fixed structure (4) includes: At least one fixed binding rib (41), one end of the fixed binding rib (41) is provided with a tight binding port (411), the other end of the fixed binding rib (41) is provided with an insertion end (412) suitable for inserting the tight binding port (411); Fixing hole (42) is opened on support (23), second baffle (22); The insertion end (412) of the fixed binding rib (41) passes through the fixing hole (42) on the support (23) and the second baffle (22) in turn, the tight binding port (411) is larger than the gap between the support (23) and the second baffle (22), so that the tight binding port (411) is clamped between the support (23) and the second baffle (22);After the insertion end (412) of the fixed binding rib (41) enters the tight binding port (411), an annular binding belt for fixing the conductive row (3) is formed.
9. The battery pack of claim 8, wherein, The fixed structure (4) further includes: A protective sleeve (43) is sleeved on the conductive bar (3); the protective sleeve (43) is matched with the conductive bar (3), and the annular binding belt is bound outside the protective sleeve (43) in the circumferential direction.
10. The battery pack of any one of claims 1-3, wherein, The bottom plate (11) is a liquid cooling plate.