Positioning structure and battery pack
By using a combined structure of spherical parts and a storage tank on the end plate and liquid-cooled plate of the battery module, the problem of difficulty in adjusting the battery module and high friction is solved, and more labor-saving sliding and more efficient alignment is achieved.
Patent Information
- Application Number
- CN202420367251.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-27
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-02-27
AI Technical Summary
When the battery module is assembled into the battery box, the end plate screw holes are deep, and the hole alignment cannot be seen intuitively with the naked eye, which makes adjustment difficult and friction difficult.
The combined structure of a spherical member and a storage tank is adopted. The spherical member is arranged in the storage tank and can rotate 360°. The friction between the end plate and the liquid-cooled plate is reduced by rotating the spherical member, thereby achieving more labor-saving relative sliding.
It reduces the difficulty and friction of adjusting the battery module, and improves the efficiency of hole alignment and assembly production efficiency.
Smart Images
Figure CN222619965U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of batteries, in particular to a positioning structure. Background Art
[0002] When the battery module is installed in the battery box, first hoist the battery module onto the liquid cooling plate, then align the screw holes of the end plate and the liquid cooling plate and tighten the screws. Since the screw holes of the end plate are deep, the hole alignment cannot be visually seen with the naked eye. In the related art, positioning holes and protrusions are used for positioning, but since the battery module is heavy, generally 60 to 70 kg, when the battery module is translated to make the positioning holes and protrusions match, the friction between the end plate and the liquid cooling plate is large, and the adjustment is difficult. Utility Model Content
[0003] The embodiment of the utility model provides a positioning structure, which can translate the battery module to make the positioning hole and the protrusion match, thereby solving the technical problem that the friction between the end plate and the liquid cooling plate is large and the adjustment is difficult.
[0004] In a first aspect, an embodiment of the present utility model provides a positioning structure, comprising:
[0005] A battery module having an end plate, wherein the end plate has a first positioning portion;
[0006] A liquid cooling plate, the liquid cooling plate having a second positioning portion, the second positioning portion cooperating with the first positioning portion to position the end plate relative to the liquid cooling plate;
[0007] The first positioning portion includes a receiving groove provided on the end plate and a spherical member rotatably clamped in the receiving groove, and the second positioning portion is a matching groove provided on the liquid cooling plate; or
[0008] The second positioning portion includes a receiving groove provided on the liquid cooling plate and a spherical member rotatably clamped in the receiving groove, and the first positioning portion is a matching groove provided on the end plate.
[0009] In one embodiment, a bushing is embedded in the receiving groove, the spherical member is rotatably clamped in the bushing, and a portion of the spherical member protrudes out of the plane where the notch of the receiving groove is located.
[0010] In one embodiment, the receiving groove and the bushing are interference fit.
[0011] In one embodiment, the bushing has a first surface, and the first surface is arranged away from the bottom of the receiving groove; the first surface is flush with the surface where the notch of the receiving groove is located.
[0012] In one embodiment, the bushing has a first surface, the first surface is arranged away from the bottom of the receiving groove, and the first surface is located in the receiving groove.
[0013] In one embodiment, a gap is provided between the surface of the portion of the spherical member located inside the bushing and the bushing, and the width of the gap is 0.05-0.2 mm.
[0014] In one embodiment, the center of the spherical component is located in the receiving groove, and the vertical distance from the center of the spherical component to the surface where the notch of the receiving groove is located is 1 / 20D-1 / 8D, wherein D is the diameter of the spherical component.
[0015] In one embodiment, the spherical member includes a solid sphere, a hollow sphere or a semi-hollow sphere.
[0016] In one embodiment, the number of the first positioning portions is at least two, and the second positioning portions correspond to the first positioning portions one by one.
[0017] In a second aspect, an embodiment of the present invention provides a battery pack, comprising the positioning structure described in the second aspect above.
[0018] Beneficial effects of the embodiments of the utility model:
[0019] In an embodiment of the utility model, after the battery cell module is hoisted onto the liquid cooling plate, if the first positioning portion and the second positioning portion are not aligned accurately, the end plate and the liquid cooling plate will be separated from each other due to the spherical member, and since the spherical member is rotatably clamped in the receiving groove, that is, the spherical member is clamped in the receiving groove, and the spherical member can rotate 360° relative to the receiving groove, in the process of adjusting the relative position of the end plate and the liquid cooling plate until the two are positioned by the first and second positioning portions, the protrusion of the prior art is fixed, and when the end plate or the liquid cooling plate is moved, the protrusion acts as a resistance to the end plate or the liquid cooling plate, and the friction is large. In the present application, since the spherical member is clamped in the receiving groove and can rotate 360° in the receiving groove, when the end plate or the liquid cooling plate is moved, the rotation of the spherical member reduces the friction between the end plate and the liquid cooling plate, thereby making the relative sliding of the end plate and the liquid cooling plate more labor-saving, thereby reducing the difficulty of adjustment. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.
[0021] Figure 1 It is a top view of the end plate and the liquid cooling plate provided in the embodiment of the utility model after being matched;
[0022] Figure 2 yes Figure 1 Sectional view of AA in the middle;
[0023] Figure 3 yes Figure 2 Enlarged view of middle B;
[0024] Figure 4 It is a partial exploded view of the end plate and the liquid cooling plate provided in the embodiment of the utility model;
[0025] Figure 5 It is a three-dimensional diagram of the end plate and the liquid cooling plate provided in the embodiment of the utility model;
[0026] Figure 6 It is a stereoscopic diagram of the matching of the bushing and the spherical member provided in the embodiment of the utility model. Description of the drawings:
[0028] 01-battery module, 011-first hole position, 012-end plate, 013-matching groove; 02-liquid cooling plate, 021-second hole position, 022-receiving groove, 023-bushing, 024-spherical part. DETAILED DESCRIPTION
[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model. In the utility model, unless otherwise stated, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.
[0030] See also Figure 1-3 , the embodiment of the present application provides a positioning structure. In some embodiments, the positioning structure may include:
[0031] The battery module 01 has an end plate 012, and the end plate 012 has a first positioning portion;
[0032] The liquid cooling plate 02 has a second positioning portion, and the second positioning portion is matched with the first positioning portion in a concave-convex manner to position the end plate 012 relative to the liquid cooling plate 02.
[0033] Specifically, the second positioning portion includes a receiving groove 022 provided on the liquid cooling plate 02 and a spherical member 024 rotatably clamped in the receiving groove 022 , and the first positioning portion is a matching groove 013 provided on the end plate 012 .
[0034] It can be understood that in some embodiments, the structure of the first positioning portion and the structure of the second positioning portion can be interchangeable, as long as the installation and positioning between the end plate 012 and the liquid cooling plate 02 can be achieved through the cooperation between the first positioning portion and the second positioning portion. Exemplarily, the first positioning portion may include a receiving groove 022 provided on the end plate 012 and a spherical member 024 rotatably clamped in the receiving groove 022. In this case, the second positioning portion may be a matching groove 013 provided on the liquid cooling plate 02.
[0035] It can be understood that in the embodiment of the present application, the spherical part 024 is rotatably clamped in the receiving groove 022, which means that a part of the spherical part 024 is clamped in the receiving groove 022, and the remaining part protrudes from the receiving groove 022, and the shape of the matching groove 013 is adapted to the shape of the part of the spherical part 024 protruding from the receiving groove 022.
[0036] In some embodiments, first holes 011 are respectively provided on both sides of the end plate 012 along the length direction; and second holes 021 are provided on the liquid cooling plate 02 corresponding to the first holes 011. After the first holes 011 and the second holes 021 are aligned with each other, fasteners are provided to penetrate the end plate 012 and the liquid cooling plate 02 to fix the end plate 012 to the liquid cooling plate 02. Exemplarily, the first holes 011 and the second holes 021 can both be screw holes, and correspondingly, the fasteners can be bolts.
[0037] In the embodiment of the present application, after the first positioning portion and the second positioning portion are aligned, the first hole position 011 and the second hole position 021 are aligned. The alignment of the first hole position 011 and the second hole position 021 is achieved by the alignment of the first positioning portion and the second positioning portion, which can reduce the difficulty of aligning the first hole position 011 and the second hole position 021, improve the hole alignment efficiency, and thus improve the assembly and production efficiency. In the process of hoisting the battery cell module onto the liquid cooling plate 02 and aligning the first positioning portion with the second positioning portion, the end plate 012 and the liquid cooling plate 02 will be separated from each other by the spherical member 024, and then in the process of adjusting the relative position of the end plate 012 and the liquid cooling plate 02 until the two are positioned by the first and second positioning portions, the protrusion of the prior art is fixed, and when the end plate 012 or the liquid cooling plate 02 is moved, the protrusion acts as a resistance to the end plate 012 or the liquid cooling plate 02, and the friction is large. In the present application, since the spherical member 024 is stuck in the receiving groove 022 and can rotate 360° in the receiving groove 022, when the end plate 012 or the liquid cooling plate 02 is moved, the rotation of the spherical member 024 reduces the friction between the end plate 012 and the liquid cooling plate 02, thereby making the relative sliding of the end plate 012 and the liquid cooling plate 02 more labor-saving, thereby reducing the difficulty of adjustment. In addition, the provision of the spherical member 024 can also prevent the problem of aluminum chips generated by the friction between the end plate 012 and the liquid cooling plate 02 being transferred to the bottom of the battery pack and worn, resulting in insulation failure of the battery pack.
[0038] See also Figure 2-3 and Figure 6 In some embodiments, a bushing 023 is embedded in the receiving groove 022 , and the spherical member 024 is rotatably clamped in the bushing 023 , and a portion of the spherical member 024 protrudes out of the plane where the notch of the receiving groove 022 is located.
[0039] In some embodiments, the bushing 023 is located in the receiving groove 022, and the end of the bushing 023 away from the plane where the notch of the receiving groove 022 is located is a closed end, while the end close to the notch of the receiving groove 022 is an open end. In this way, the spherical part 024 and the bushing 023 have better compatibility.
[0040] In some embodiments, the outer shape of the bushing 023 can be cylindrical, cubic, flat-topped cone or flat-topped triangular prism. In this way, the contact area between the bushing 023 and the receiving groove 022 is large, and the bushing 023 is firmly stuck in the receiving groove 022.
[0041] Furthermore, the bushing 023 is made of self-lubricating plastic, for example, one or more of PEEK, POM or PPS.
[0042] Furthermore, except for the outer surface of the opening, the outer surface of the remaining part of the bushing 023 matches the interior of the receiving groove 022, and because the bushing 023 is an elastic body, the bushing 023 can be stably and firmly embedded in the receiving groove 022.
[0043] See also Figure 2 and 3 In some embodiments, the receiving groove 022 is interference-fitted with the bushing 023. It can be understood that the setting of the interference-fit between the receiving groove 022 and the bushing 023 can make the bushing 023 and the receiving groove 022 firmly connected.
[0044] In some embodiments, the bushing 023 has a first surface, which is disposed away from the bottom of the receiving groove 022; the first surface is flush with the surface where the notch of the receiving groove 022 is located. It can be understood that the bushing 023 is embedded in the receiving groove 022, and the opening of the bushing 023 is flush with the notch of the receiving groove 022, so that the spherical member 024 can be stably and firmly located in the bushing 023.
[0045] In some embodiments, the bushing 023 has a first surface, the first surface is disposed away from the bottom of the receiving groove 022, and the first surface is located in the receiving groove 022. It can be understood that the bushing 023 can also be embedded in the receiving groove 022, and the first surface is located in the receiving groove 022. In this case, the spherical member 024 is clamped in the bushing 023, and the spherical member 024 partially protrudes to the outside of the notch of the receiving groove 022.
[0046] In some embodiments, the bushing 023 has a first surface, the first surface is disposed away from the bottom of the receiving groove 022, and the first surface is located outside the receiving groove 022. It can be understood that the bushing 023 is partially embedded in the receiving groove 022, and the first surface is located outside the receiving groove 022. When the first positioning portion and the second positioning portion cooperate to position, there is a gap between the end plate 012 and the liquid cooling plate 02. The distance of the gap is the portion of the bushing 023 exposed outside the receiving groove 022. At this time, it is conducive to the circulation of hot air and the heat dissipation effect is good.
[0047] In some embodiments, a gap is provided between the surface of the portion of the spherical member 024 located inside the bushing 023 and the bushing 023, and the width of the gap is 0.05-0.2 mm, for example, it may be 0.05 mm, 0.07 mm, 0.09 mm, 0.1 mm, 0.12 mm, 0.14 mm, 0.16 mm, 0.18 mm, 0.2 mm, etc. Within the range of the gap, the spherical member 024 can rotate inside the bushing 023 while the bushing 023 can clamp the spherical member 024 to prevent the spherical member 024 from slipping off the bushing 023.
[0048] In some embodiments, the center of the spherical part 024 is located in the receiving groove 022, and the vertical distance from the center of the spherical part to the surface where the groove of the receiving groove 022 is located is 1 / 20D-1 / 8D, for example, it can be 1 / 20D, 3 / 50D, 2 / 25D, 9 / 100D, 1 / 10D, 3 / 25D, 1 / 8D, etc., wherein D is the diameter of the spherical part 024. Within the vertical distance range, the spherical part 024 can rotate in the bushing 023 while the bushing 023 can clamp the spherical part 024. At the same time, the spherical part 024 outside the receiving groove 022 can be well matched with the matching groove 013 to realize the positioning of the end plate 012 and the liquid cooling plate 02.
[0049] In some embodiments, after the mating groove 013 and the mating spherical part 024 are mated, the gap between the surface of the part of the spherical part 024 located in the mating groove 013 and the mating groove 013 is 0.05-0.2mm, for example, it can be 0.05mm, 0.07mm, 0.09mm, 0.1mm, 0.12mm, 0.14mm, 0.16mm, 0.18mm, 0.2mm, etc.
[0050] See also Figure 4 In some embodiments, the spherical member 024 includes a solid sphere, a hollow sphere, or a semi-hollow sphere. It is understood that the spherical member 024 is a regular sphere, so that the spherical member 024 can be easily rotated in the receiving groove 022, thereby achieving labor-saving and efficient positioning of the end plate 012 and the liquid cooling plate 02. It is also understood that the material of the spherical member 024 can be an alloy, and exemplarily, the spherical member 024 is a steel ball.
[0051] In some embodiments, the number of the first positioning portions is at least two, and the second positioning portions correspond one-to-one to the first positioning portions.
[0052] See also Figure 2 and 5 In some embodiments, at least two first positioning portions may be arranged at intervals along the width direction of the end plate 012. Further, at least two first positioning portions may be arranged at equal intervals along the width direction of the end plate 012.
[0053] Based on the same inventive concept, an embodiment of the present application also provides a battery pack, including the above-mentioned positioning structure.
[0054] The description of the positioning structure is as above and will not be repeated here.
[0055] The embodiments of the present invention are described in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of the present invention. At the same time, for technicians in this field, according to the idea of the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.
Claims
1. A positioning structure, characterized in that: include: A battery module having an end plate, wherein the end plate has a first positioning portion; A liquid cooling plate, the liquid cooling plate having a second positioning portion, the second positioning portion cooperating with the first positioning portion to position the end plate relative to the liquid cooling plate; The first positioning portion includes a receiving groove provided on the end plate and a spherical member rotatably clamped in the receiving groove, and the second positioning portion is a matching groove provided on the liquid cooling plate; or The second positioning portion includes a receiving groove provided on the liquid cooling plate and a spherical member rotatably clamped in the receiving groove, and the first positioning portion is a matching groove provided on the end plate.
2. The positioning structure according to claim 1, characterized in that: A bushing is embedded in the receiving groove, and the spherical piece is rotatably clamped in the bushing. A part of the spherical piece protrudes out of the plane where the notch of the receiving groove is located.
3. The positioning structure according to claim 2, characterized in that: The receiving groove is interference fit with the bushing.
4. The positioning structure according to claim 2, characterized in that: The bushing has a first surface, and the first surface is arranged away from the bottom of the receiving groove; the first surface is flush with the surface where the notch of the receiving groove is located.
5. The positioning structure according to claim 2, characterized in that: The bushing has a first surface, the first surface is arranged away from the bottom of the receiving groove, and the first surface is located in the receiving groove.
6. The positioning structure according to claim 2, characterized in that: A gap is provided between the surface of the portion of the spherical member located inside the bushing and the bushing, and the width of the gap is 0.05-0.2 mm.
7. The positioning structure according to any one of claims 1 to 6, characterized in that: The center of the spherical component is located in the receiving groove, and the vertical distance from the center of the spherical component to the surface where the notch of the receiving groove is located is 1 / 20D-1 / 8D, wherein D is the diameter of the spherical component.
8. The positioning structure according to claim 7, characterized in that: The spherical member includes a solid sphere, a hollow sphere or a semi-hollow sphere.
9. The positioning structure according to claim 1, characterized in that: The number of the first positioning portions is at least two, and the second positioning portions correspond to the first positioning portions one by one.
10. A battery pack, characterized in that: It comprises the positioning structure described in any one of claims 1 to 9.