CTP battery pack box body and battery pack
By optimizing the box structure of the CTP battery pack, integrating the side plate into the upper cover and setting a module installation slot on the bottom plate, horizontal stacking and fixing of the battery cell module is achieved, which solves the problem of low product qualification rate in the existing technology, improves assembly accuracy and avoids the risk of battery cell module collision.
Patent Information
- Application Number
- CN202422151918.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-02
AI Technical Summary
The existing CTP battery pack structure has the problem of low product qualification rate during assembly, mainly because the assembly method requires special tooling equipment and the risk of collision and falling of battery cell modules.
The CTP battery pack box structure is optimized, the second side plate and the third side plate are integrated into the upper cover, and only the first side plate is retained on one side of the bottom plate, and a module installation groove is set on the other side of the bottom plate. The module installation groove is used to fix the limit, so that the battery cell module can be horizontally stacked and glued on the base, eliminating the transfer and docking equipment, and avoiding bumps and drops.
It improves the product pass rate of the battery pack, simplifies the assembly process, avoids the risk of bumping and falling of the battery cell module during the transport process, reduces equipment costs and improves assembly accuracy.
Smart Images
Figure CN223124066U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of new energy battery equipment, and particularly relates to a CTP battery pack box body and a battery pack. Background Art
[0002] CTP, that is, Cell To PACK, is a battery cell module structure that directly integrates battery cell packs into a battery pack box body, thus eliminating the intermediate module structure, simplifying the structure of the battery pack, and further improving the space utilization rate of the battery pack.
[0003] In the related art, when assembling the existing CTP battery pack structure, first, the box body is designed and manufactured. After stacking the CTP single battery cells on the tray tooling, the assembled CTP large module is transported to the box body through clamping and suction tooling to complete the assembly.
[0004] Adopting the CTP assembly form in the related art requires equipping professional tooling for the transportation and docking of the battery cell module to ensure that the battery cell module is installed at the accurate position in the battery pack box body. The tooling equipment is large in size, high in cost, and low in efficiency. At the same time, during the transportation process, the battery cell module often needs to be placed into the box body from directly above the box body, which may pose risks of collision and dropping, resulting in a low product qualification rate. Summary of the Utility Model
[0005] The embodiment of the utility model provides a CTP battery pack box body and a battery pack, which can solve the technical problem of low product qualification rate caused by the defect of the assembly method in the existing CTP structure. The technical solution is as follows:
[0006] In a first aspect, the embodiment of the utility model provides a CTP battery pack box body, including:
[0007] A base, including a bottom plate and a first side plate disposed on one side of the bottom plate. A module installation groove is provided on the bottom plate, and the module installation groove is arranged in a direction perpendicular to the first side plate and communicates with the other side of the bottom plate.
[0008] An upper cover, including a top plate, a second side plate, and two third side plates. The second side plate is disposed on one side of the top plate. The two third side plates are symmetrically disposed on both sides of the second side plate and one end of each is connected to the second side plate. The upper cover is cover-joined to the base to form a closed space for accommodating the battery cell module, and the other ends of the two third side plates are connected to the first side plate.
[0009] Optionally, a first bolt hole is provided on the upper cover, and a second bolt hole matching the first bolt hole is provided on the base.
[0010] Optionally, a plurality of first bolt holes are provided and are evenly spaced around the edge of the top plate. A corresponding plurality of second bolt holes are provided and are evenly spaced on the top of the first side plate, the edge of the bottom plate, and in the module installation groove.
[0011] Optionally, a fitting protrusion matching the module installation groove is provided on the second side plate.
[0012] Optionally, a limiting protrusion is protrudingly provided on at least one end face of the first side plate in the horizontal direction, and the limiting protrusion extends in the vertical direction. A guiding groove matching the limiting protrusion is provided on the inner side face of the third side plate.
[0013] Optionally, a positioning pin is protrudingly provided on the bottom plate, and a pin hole matching the positioning pin is provided on the upper cover.
[0014] Optionally, a CTP high-voltage integration box is further included. The CTP high-voltage integration box is arranged between the first side plate and the module installation groove, and a wiring harness hole matching the CTP high-voltage integration box is provided on the first side plate.
[0015] Optionally, a plurality of suction cups are provided on the top plate, and the plurality of suction cups are evenly spaced.
[0016] Optionally, reinforcing ribs extending in a direction perpendicular to the second side plate are provided on the top plate.
[0017] In a second aspect, an embodiment of the present utility model provides a battery pack, including the CTP battery pack box body described in the first aspect above, and further including a battery cell module arranged in the closed space. The battery cell module includes a plurality of single battery cells, and the plurality of single battery cells are stacked in a direction perpendicular to the first side plate and are fitted and installed at the bottom in the module installation groove.
[0018] The beneficial effects brought by the technical solution provided by the embodiment of the present utility model at least include:
[0019] Using the CTP battery pack box body provided by the embodiments of the present utility model, compared with the traditional CTP battery pack, when transporting the battery cell modules, it is necessary to stack them first and then lift and transfer them to the battery pack box body. The structure of the box body is optimized. Most of the box body railings such as the second side plate and the third side plate are integrated into the upper cover. Only the first side plate is reserved on one side of the bottom plate to facilitate the covering and positioning installation. At the same time, a module installation groove communicating with the other end face of the bottom plate is provided. Through the module installation groove for limit fixation, combined with the structure without railings on multiple sides, the battery cell modules can be directly and quickly glued and stacked horizontally on the base, saving the process of transporting the assembled battery cell modules into the box. There is no need to set up special transportation and docking equipment, and it also avoids the risks of bumping and dropping of the battery cell modules during transportation, and can effectively solve the technical problem of low product qualification rate caused by the defect of the assembly method in the existing CTP structure. Description of the Drawings
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0021] Figure 1 is an exploded perspective view of the CTP battery pack box body provided by the embodiments of the present utility model;
[0022] Figure 2 is a schematic structural diagram of the base provided by the embodiments of the present utility model;
[0023] Figure 3 is a top view structural diagram of the base provided by the embodiments of the present utility model;
[0024] Figure 4 is a schematic bottom view structure diagram of the upper cover provided by the embodiments of the present utility model;
[0025] Figure 5 is a top view of the internal structure of the battery pack provided by the embodiments of the present utility model.
[0026] In the figure: 1 - base; 2 - upper cover; 3 - battery cell module; 11 - bottom plate; 12 - first side plate; 13 - second bolt hole; 14 - CTP high-voltage integration box; 21 - top plate; 22 - second side plate; 23 - third side plate; 24 - first bolt hole; 25 - pin hole; 31 - single battery cell; 111 - module installation groove; 112 - positioning pin; 121 - limit protrusion; 122 - wire harness hole; 211 - suction cup; 212 - reinforcing rib; 221 - fitting protrusion; 231 - guiding groove. Detailed Embodiments
[0027] To make the objectives, technical solutions, and advantages of the present utility model clearer, the following will further describe the embodiments of the present utility model in detail in conjunction with the accompanying drawings.
[0028] Figure 1 is an exploded perspective view of the CTP battery pack box body provided by an embodiment of the present utility model; Figure 2 is a schematic structural view of the base provided by an embodiment of the present utility model; Figure 3 is a top view structural view of the base provided by an embodiment of the present utility model; Figure 4 is a bottom view structural view of the upper cover provided by an embodiment of the present utility model; Figure 5 is a top view of the internal structure of the battery pack provided by an embodiment of the present utility model. As Figures 1 to 5 shown, an embodiment of the present utility model provides a CTP battery pack box body, including a base 1 and an upper cover 2.
[0029] Among them, the base 1 includes a bottom plate 11 and a first side plate 12 provided on one side of the bottom plate 11. A module installation groove 111 is provided on the bottom plate 11, and the module installation groove 111 is arranged in a direction perpendicular to the first side plate 12 and communicates with the other side of the bottom plate 11.
[0030] The upper cover 2 includes a top plate 21, a second side plate 22, and two third side plates 23. The second side plate 22 is provided on one side of the top plate 21, the two third side plates 23 are symmetrically arranged on both sides of the second side plate 22 and one end is connected to the second side plate 22, and the upper cover 2 is covered and connected to the base 1 to form a closed space for accommodating the battery cell module 3, and the other ends of the two third side plates 23 are connected to the first side plate 12.
[0031] In the embodiment of the present utility model, on the base 1 of the CTP battery pack box body, only a first side plate 12 connected vertically is provided on one side of the bottom plate 11, and on the bottom surface of the upper cover 2, a second side plate 22 and two third side plates 23 connected to each other are respectively provided, wherein the second side plate 22 is of the same size as the first side plate 12. After the upper cover 2 is covered and connected to the base 1, the other ends of the two third side plates 23 are connected to the first side plate 12, forming a side enclosure structure surrounded in sequence by the first side plate 12, the third side plate 23, the second side plate 22, and the other third side plate 23, which together with the top plate 21 and the bottom plate 11 define a closed space for accommodating the battery cell module 3. When using this base 1 for installing the battery cell module 3 into the box, since the first side plate 12 is only provided on one side of the bottom plate 11, a box body railing structure is formed in other directions on the horizontal plane. At the same time, a strip-shaped module installation groove 111 perpendicular to the first side plate 12 is provided on the side of the bottom plate 11 opposite to the first side plate 12. Multiple single battery cells 31 can be directly inserted into the module installation groove 111 in sequence along the horizontal direction through the opening on the other side of the bottom plate 11, realizing rapid stacking on the bottom plate 11, and bonding to form the battery cell module 3 by means of gluing or the like. After the subsequent binding, copper busbar series-parallel connection, and internal devices such as wire harnesses of the battery cell module 3 are installed inside the box body, finally, the upper cover 2 is covered on the base 1 and fixedly connected to complete the assembly of the battery pack.
[0032] When using the CTP battery pack box body provided by the embodiment of the present utility model, compared with the traditional CTP battery pack, which requires stacking first and then hoisting and transferring to the battery pack box body during the transfer of the battery cell module. Its box body structure is optimized, integrating most of the box body railings such as the second side plate 22 and the third side plate 23 on the upper cover 2, only retaining the first side plate 12 on one side of the bottom plate 11 for convenient covering and positioning installation, and at the same time setting the module installation groove 111 communicating with the other end face of the bottom plate 11. Through the limiting and fixing of the module installation groove 111, and in cooperation with the multi-sided railing-free setting structure, the battery cell module 3 can be directly and rapidly glued and stacked horizontally on the base 1, saving the process of transferring the battery cell module 3 into the box after stacking and forming, eliminating the need to set up dedicated transfer and docking equipment, and also avoiding the risks of bumping and dropping of the battery cell module 3 during the transfer process, and effectively solving the technical problem of low product qualification rate caused by the defect of the assembly method in the existing CTP structure.
[0033] Optionally, the upper cover 2 is provided with first bolt holes 24, and the base 1 is provided with second bolt holes 13 that match the first bolt holes 24. Exemplarily, in the embodiment of the present utility model, the upper cover 2 is provided with a plurality of first bolt holes 24 that penetrate longitudinally, and are evenly spaced around the edge of the top plate 21. Correspondingly, a plurality of second bolt holes 13 on the lower base 1 are also correspondingly provided, and are evenly spaced on the top of the first side plate 12, the edge of the bottom plate 11, and the module installation groove 111. After the upper cover 2 is correspondingly closed on the base 1, the upper cover 2 is locked and fixed by screwing a plurality of long bolts into the coaxially corresponding first bolt holes 24 and second bolt holes 13, with firm connection and simple processing procedures.
[0034] Optionally, the second side plate 22 is provided with a fitting protrusion 221 that matches the module installation groove 111. Exemplarily, in the embodiment of the present utility model, since the opening of the module installation groove 111 is recessed in the bottom plate 11, by additionally providing a fitting protrusion 221 on the second side plate 22, the fitting protrusion 221 will be embedded into the side opening of the module installation groove 111 after being correspondingly closed in place. While improving the overall sealing performance of the CTP battery pack box body, it can also play a role of limiting and guiding during the closing process, ensuring that the upper cover 2 can be accurately closed in place and improving the assembly accuracy.
[0035] Optionally, at least one end face of the first side plate 12 in the horizontal direction protrudes with a limiting protrusion 121, and the limiting protrusion 121 extends in the vertical direction. A guiding groove 231 that matches the limiting protrusion 121 is provided on the inner side surface of the third side plate 23. Exemplarily, in the embodiment of the present utility model, when the upper cover 2 is covered in place, the "C" - shaped structure formed by its two third side plates 23 and the top plate 21 will be mutually attached to the top surface and two side end faces of the first side plate 12. By providing limiting protrusions 121 arranged longitudinally on both side end faces of the first side plate 12, during the process of covering the upper cover 2, only when the limiting protrusions 121 are accurately embedded into the guiding grooves 231 on the inner side surface of the third side plate 23 can the upper cover 2 be smoothly covered downward on the base 1. Through this matching guiding structure, the assembly accuracy of the CTP battery pack box body is further improved.
[0036] Optionally, a positioning pin 112 protrudes from the bottom plate 11, and a pin hole 25 that matches the positioning pin 112 is provided on the upper cover 2. Exemplarily, in the embodiment of the present utility model, the positioning pin 112 is provided on the other side of the bottom plate 11 away from the first side plate 12. Together with the module installation groove 111, it serves as a positioning structure on the other side of the bottom plate 11 corresponding to the fitting protrusion 221 and the pin hole 25 on the upper cover 2. Cooperating with the limiting protrusion 121 on the first side plate 12 and the guiding groove 231 on the upper cover, multi - point positioning during the process of covering the upper cover 2 is achieved, ensuring accurate covering in place and further improving the assembly accuracy of the CTP battery pack box body.
[0037] Optionally, it further includes a CTP high-voltage integration box 14. The CTP high-voltage integration box 14 is arranged between the first side plate 12 and the module installation groove 111, and a wiring harness hole 122 matching the CTP high-voltage integration box 14 is arranged on the first side plate 12. Exemplarily, in the embodiment of the present invention, by arranging the CTP high-voltage integration box 14, after the battery cell modules 3 are stacked and formed, tied, the copper bars are connected in series and parallel, and the wiring harness is connected, the internal wiring harness can be centrally arranged in the CTP high-voltage integration box 14, avoiding redundant arrangement in the battery pack box body, and at the same time, it can be led out through the wiring harness hole 122 on the first side plate 12, or a corresponding connector can be installed on the wiring harness hole 122 for connection to achieve the electrical connection between the battery pack and external devices.
[0038] Optionally, a plurality of suction cups 211 are arranged on the top plate 21, and the plurality of suction cups 211 are evenly spaced. Exemplarily, in the embodiment of the present invention, after the battery cell modules 3 are put into the box and the CTP battery pack housing is assembled to form a battery pack, a clamping and suction tooling can be used to adsorb the top plate 21 at multiple points to fix the battery pack to achieve the overall transportation of the battery pack, ensuring the clamping and adsorption stability during the transportation process.
[0039] Optionally, a reinforcing rib 212 extending in a direction perpendicular to the second side plate 22 is arranged on the top plate 21. Exemplarily, in the embodiment of the present invention, since the top plate 21 is the main stress part during the transportation and adsorption process of the entire CTP battery pack housing and the formed battery pack, a reinforcing rib 212 structure is arranged at the intervals of the plurality of suction cups 211 to improve the overall mechanical strength of the top plate 21, ensuring that it will not be deformed due to frequent stress during the transportation process, and improving the service life of the CTP battery pack box body.
[0040] Reference Figure 5 , the embodiment of the present invention also provides a battery pack, including as Figures 1 to 4The CTP battery pack box body further includes a battery cell module 3 disposed in the enclosed space. The battery cell module 3 includes a plurality of single battery cells 31. The plurality of single battery cells 31 are stacked in a direction perpendicular to the first side plate 12 and the bottom is fitted and installed in the module installation groove 111. Exemplarily, when the CTP battery pack box body provided by the embodiment of the present invention is used for integrated installation of CTP large modules to form a battery pack, compared with the conventional CTP battery pack, when transporting the battery cell module, it is necessary to stack it first and then hoist and transfer it to the battery pack box body. The box body structure is optimized. Most of the box body fences such as the second side plate 22 and the third side plate 23 are integrated into the upper cover 2. Only the first side plate 12 is reserved on one side of the bottom plate 11 for convenient lid closing and positioning installation. At the same time, a module installation groove 111 communicating with the other end face of the bottom plate 11 is provided. Through the limiting and fixing of the module installation groove 111 and in cooperation with the structure of no fences on multiple sides, the battery cell module 3 can be directly stacked horizontally on the base 1 by rapid gluing, saving the process of transporting the battery cell module into the box after stacking. There is no need to correspondingly set up special transportation and docking equipment, and it also avoids the risks of bumping and dropping of the battery cell module 3 during transportation, and can effectively solve the technical problem of low product qualification rate caused by the defect of the assembly method in the prior art CTP structure.
[0041] Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meanings understood by those of ordinary skill in the art to which the present invention belongs. The "first", "second" and similar terms used in the description and claims of the present patent application for the invention do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, the terms such as "a" or "one" do not denote a quantity limitation, but mean that there is at least one. The terms such as "comprising" or "including" mean that the elements or objects appearing before "comprising" or "including" cover the elements or objects listed after "comprising" or "including" and their equivalents, and do not exclude other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left", "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.
[0042] The above are only optional embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A CTP battery pack box body, characterized in that, Comprising: A base (1), including a bottom plate (11) and a first side plate (12) disposed on one side of the bottom plate (11). A module installation groove (111) is provided on the bottom plate (11), and the module installation groove (111) is arranged in a direction perpendicular to the first side plate (12) and communicates with the other side of the bottom plate (11). An upper cover (2), including a top plate (21), a second side plate (22), and two third side plates (23). The second side plate (22) is disposed on one side of the top plate (21). The two third side plates (23) are symmetrically disposed on both sides of the second side plate (22) and one end is connected to the second side plate (22). The upper cover (2) is connected to the base (1) in a covering manner to form a closed space for accommodating the battery cell module (3), and the other ends of the two third side plates (23) are connected to the first side plate (12).
2. The CTP battery pack box according to claim 1, characterized in that, A first bolt hole (24) is provided on the upper cover (2), and a second bolt hole (13) matching the first bolt hole (24) is provided on the base (1).
3. The CTP battery pack box according to claim 2, wherein, There are multiple first bolt holes (24), which are evenly spaced around the edge of the top plate (21). Correspondingly, there are multiple second bolt holes (13), which are evenly spaced on the top of the first side plate (12), the edge of the bottom plate (11), and in the module installation groove (111).
4. A CTP battery pack housing according to claim 1, characterized in that, A fitting protrusion (221) matching the module installation groove (111) is provided on the second side plate (22).
5. The CTP battery pack box according to claim 1, wherein A limiting protrusion (121) protrudes on at least one end face of the first side plate (12) in the horizontal direction, and the limiting protrusion (121) extends in the vertical direction. A guiding groove (231) matching the limiting protrusion (121) is provided on the inner side surface of the third side plate (23).
6. The CTP battery pack box according to claim 1, wherein, A positioning pin (112) protrudes on the bottom plate (11), and a pin hole (25) matching the positioning pin (112) is provided on the upper cover (2).
7. The CTP battery pack box according to any one of claims 1 to 6, characterized in that, It further includes a CTP high-voltage integration box (14). The CTP high-voltage integration box (14) is disposed between the first side plate (12) and the module installation groove (111), and a wire harness hole (122) matching the CTP high-voltage integration box (14) is provided on the first side plate (12).
8. The CTP battery pack box according to any one of claims 1 to 6, characterized in that, Multiple suction cups (211) are provided on the top plate (21), and the multiple suction cups (211) are evenly spaced.
9. The CTP battery pack box according to any one of claims 1 to 6, characterized in that, A reinforcing rib (212) extending in a direction perpendicular to the second side plate (22) is provided on the top plate (21).
10. A battery pack, comprising the CTP battery pack housing according to any one of claims 1 to 6, characterized in that, It further includes a battery cell module (3) disposed in the closed space. The battery cell module (3) includes multiple single battery cells (31), and the multiple single battery cells (31) are stacked in a direction perpendicular to the first side plate (12) and the bottom is fittingly installed in the module installation groove (111).