Battery cell module fixing device

Abstract

The utility model discloses a battery cell module fixing device. The battery cell module fixing device comprises a base, a battery cell module fixing part and a battery cell module fixing part, the cross beam is arranged on the base, the cross beam is provided with a battery cell supporting side, the cross beam is in a convex shape in the direction facing the battery cell supporting side, and the edge of the cross beam is provided with a mounting positioning part; and the structural adhesive is adhered to the battery cell supporting side of the cross beam. The battery cell module fixing device disclosed by the utility model can be used for solving the problems of insufficient fixing strength or risk of falling of the battery cells in the middle of the battery cell module in the fixing mode of the battery cell module in the prior art.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium batteries, and in particular relates to a battery core module fixing device. Background Art

[0002] The safety design of the battery module is crucial in the entire battery system, especially the reliability design of the battery module machinery. When the battery module is transported by long-distance trucks and installed near the engine, the battery module is often exposed to high-intensity vibration, so the safety requirement of anti-vibration is one of the necessary requirements.

[0003] The existing method of fixing square battery cell modules is to fix the battery cell modules to the box body through screws. However, when the battery cell module is relatively large in size or the vibration intensity is high, the screw fixing method has the risk of insufficient strength or causing the battery cell in the middle of the battery cell module to fall off. Utility Model Content

[0004] The utility model provides a battery cell module fixing device, which is used to solve the problems in the prior art of insufficient fixing strength of the battery cell module or the risk of the battery cell in the middle of the battery cell module falling off.

[0005] In order to solve the above technical problems, the utility model provides a battery cell module fixing device, including: a base; a crossbeam, the crossbeam is arranged on the base, the crossbeam has a battery cell supporting side, the crossbeam is convex in the direction toward the battery cell supporting side, and the edge of the crossbeam is provided with an installation positioning portion; structural adhesive, the structural adhesive is bonded to the battery cell supporting side of the crossbeam.

[0006] Optionally, the installation positioning portion changes in a sawtooth shape along the edge of the beam, and the installation positioning portion is convex in a direction away from the beam.

[0007] Optionally, the battery cell module fixing device also includes a reinforcing beam, which is arranged on a side of the base away from the crossbeam, and the reinforcing beam includes a transverse reinforcing beam and a longitudinal reinforcing beam, and the transverse reinforcing beam and the longitudinal reinforcing beam intersect each other.

[0008] Optionally, the transverse reinforcement beam is parallel to the cross beam, and the transverse reinforcement beam has a first supporting side, and the transverse reinforcement beam is convex in a direction away from the first supporting side, and the longitudinal reinforcement beam has a second supporting side, and the longitudinal reinforcement beam is convex in a direction toward the second supporting side.

[0009] Optionally, the battery cell module fixing device further comprises an insulating film, wherein the insulating film is arranged on the battery cell supporting side of the beam, and the insulating film and the structural adhesive are located in different areas of the battery cell supporting side.

[0010] Optionally, the battery cell module fixing device further includes a buffer wall for buffering the expansion of the battery cell, and the buffer wall is fixedly connected to the crossbeam.

[0011] Optionally, the battery module fixing device further includes a screw rod, the screw rod penetrates and is connected to the buffer wall, and the tail of the screw rod is fixedly connected to the cross beam.

[0012] Optionally, transverse reinforcing ribs and longitudinal reinforcing ribs are provided on the buffer wall, and the transverse reinforcing ribs and the longitudinal reinforcing ribs cross each other.

[0013] Optionally, a structural reinforcement column is further provided on the buffer wall, and the structural reinforcement column is located between two adjacent transverse reinforcement ribs, and a reinforcement wall is connected between the structural reinforcement column and each adjacent transverse reinforcement rib.

[0014] Optionally, a shrink-proof groove is provided on the side of the buffer wall.

[0015] Compared with the prior art, the battery core module fixing device provided by the utility model has the following beneficial effects:

[0016] The battery cell module is supported on the crossbeam, and the crossbeam is raised in the direction toward the battery cell module, which can enhance the stability of the crossbeam supporting the battery cell, and the structural adhesive is bonded to the battery cell supporting side of the crossbeam, so that the crossbeam and the battery cell module are bonded by the structural adhesive. Since the structural adhesive has extremely high bonding strength, the stability of the battery cell module can be further enhanced. In summary, the battery cell module fixing device provided by the utility model can solve the problem that the fixing method of the battery cell module in the prior art has insufficient fixing strength or the battery cell in the middle of the battery cell module has the risk of falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only part of the embodiments of the utility model, rather than all of the embodiments. For ordinary technicians in this field, without paying creative work, other drawings obtained based on these drawings all fall within the scope of protection of the utility model.

[0018] Figure 1 This is an exploded view of a battery module fixing device provided by an embodiment of the utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of a battery module fixing device provided by an embodiment of the utility model in a certain direction;

[0020] Figure 3 It is a three-dimensional structural diagram of a battery module fixing device provided by an embodiment of the utility model in another direction;

[0021] Figure 4 This is a three-dimensional structural diagram of a crossbeam provided by an embodiment of the utility model;

[0022] Figure 5 This is a three-dimensional structural diagram of a transverse reinforcement beam provided by an embodiment of the utility model;

[0023] Figure 6 This is a three-dimensional structural diagram of a longitudinal reinforcement beam provided by an embodiment of the utility model;

[0024] Figure 7 It is a three-dimensional structural diagram of a buffer wall provided by an embodiment of the utility model in a certain direction;

[0025] Figure 8 It is a three-dimensional structural diagram of a buffer wall provided by an embodiment of the utility model in another direction.

[0026] Explanation of the accompanying drawings: 100-base, 200-crossbeam, 210-battery cell supporting side, 220-installation positioning part, 300-structural adhesive, 400-battery cell module, 500-reinforcement beam, 510-transverse reinforcement beam, 511-first supporting side, 520-longitudinal reinforcement beam, 521-second supporting side, 600-insulating film, 700-buffer wall, 710-transverse reinforcement rib, 720-longitudinal reinforcement rib, 730-structural reinforcement column, 740-reinforcement wall, 750-anti-shrinkage groove, 800-screw, 900-connecting block, 1000-binding strap, 1100-top cover. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] In order to make the description of the disclosed content more detailed and complete, the following is an illustrative description of the implementation methods and specific examples of the utility model; however, this is not the only form of implementing or using the specific examples of the utility model. Based on the examples in the utility model, all other examples obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein.

[0030] In the description of the embodiments of the present invention, "multiple" means two or more than two, and other quantifiers are similar and should be understood. The preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. In addition, the embodiments of the present invention and the features therein may be combined with each other if there is no conflict.

[0031] like Figure 1 The figure shows an exploded view of a battery module fixing device provided by an embodiment of the utility model. Figure 2 and Figure 3 The figure shows a three-dimensional structural diagram of a battery module fixing device provided by an embodiment of the utility model in different directions. The battery module fixing device includes: a base 100, a crossbeam 200 and a structural adhesive 300; Figure 4 The figure shows a three-dimensional structural diagram of a beam 200 provided by an embodiment of the utility model, wherein the beam 200 is arranged on the base 100, and the beam 200 has a battery cell supporting side 210, and the beam 200 is convex in the direction toward the battery cell supporting side 210, and an installation positioning portion 220 is arranged at the edge of the beam 200; the structural adhesive 300 is bonded to the battery cell supporting side 210 of the beam 200.

[0032] It should be noted that the base 100 can be any structure that can play a supporting role, and the specific shape and volume can be designed according to the specific needs of the application, which will not be described in detail here.

[0033] It should be noted that the cell supporting side 210 of the crossbeam 200 is the side of the crossbeam 200 close to the cell module 400, and the cell module 400 may be a module consisting of one cell or multiple cells. In order to make the crossbeam 200 support the cell module 400 more stably, the crossbeam 200 may span all the cells in the cell module 400;

[0034] In order to make the crossbeam 200 support the battery cell module 400 more stably, multiple crossbeams 200 can be set for the battery cell module 400. In order to save materials for the crossbeam 200 and reduce costs, a crossbeam 200 can be set on two opposite sides of the battery cell module 400. In this way, while fully ensuring the stability of the crossbeam 200 supporting the battery cell module 400, the material of the crossbeam 200 can be saved, thereby saving the cost of the crossbeam 200.

[0035] It should be noted that the convex shape of the beam 200 in the direction toward the cell supporting side 210 may be a convex shape with a smooth transition, that is, when the beam 200 is along the direction toward the cell supporting side 210, the cross section of the beam 200 is in the shape of a "+" ("T").

[0036] It should be noted that the installation positioning portion 220 provided on the edge of the beam 200 makes it easy to locate the position of the beam 200 when the beam 200 is connected to other structures (for example, by welding or bonding), and makes it easy to connect the beam 200 with other structures. For example, a protrusion away from the beam 200 can be provided on the edge of the beam 200. It can be understood that the protrusion can facilitate the positioning and installation of the beam 200.

[0037] It should be noted that the structural adhesive 300 can be epoxy adhesive, polyurethane adhesive, acrylate adhesive, anaerobic adhesive, organic silicone adhesive, etc., and can be selected according to the application scenario. For example, if higher bonding strength is required, it can be a Type II or above structural adhesive. If the structural adhesive 300 is required to have better heat resistance, the structural adhesive 300 can be a Type III or Type IV structural adhesive.

[0038] In this way, the cell module 400 is supported on the crossbeam 200, and the crossbeam 200 is raised in the direction toward the cell module 400, which can enhance the stability of the crossbeam 200 supporting the cell, and the structural adhesive 300 is bonded to the cell supporting side 210 of the crossbeam 200, so that the crossbeam 200 and the cell module 400 are bonded by the structural adhesive 300. Since the structural adhesive 300 has extremely high bonding strength, the stability of the cell module 400 can be further enhanced. In summary, the cell module fixing device provided by the utility model can solve the problem that the fixing method of the cell module 400 in the prior art has insufficient fixing strength or the cell in the middle of the cell module 400 has the risk of falling off.

[0039] In an optional implementation, Figure 4 As shown, the installation positioning portion 220 changes in a sawtooth shape along the edge of the beam 200 , and the installation positioning portion 220 is convex in a direction away from the beam 200 .

[0040] It should be noted that the position of the installation positioning portion 220 along the edge of the beam 200 can be set according to the specific needs of the application. For example, if other structures need to be connected only on one side of the beam 200, the installation positioning portion 220 can be set only on that side. If other structures need to be connected on both sides of the beam 200, the installation positioning portion 220 can be set on both sides of the beam 200.

[0041] It can be understood that the installation positioning portion 220 changes in a serrated shape along the edge of the beam 200. Compared with the installation positioning portion 220 protruding as a whole along the edge of the beam 200 in a direction away from the beam 200, the material used for the installation positioning portion 220 can be reduced while maintaining the positioning effect.

[0042] It should also be noted that the length of the installation positioning portion 220 can be designed as needed. For example, the length of the installation positioning portion 220 can match the length of other structures to be connected to it, or it can be shorter than the length of other structures to be connected to it, so as to save the material used for the installation positioning portion 220 and thereby save the cost of the installation positioning portion 220.

[0043] In an optional implementation, Figure 3 As shown, the battery module fixing device further includes a reinforcing beam 500, which is disposed on a side of the base 100 away from the crossbeam 200, and includes a transverse reinforcing beam 510 and a longitudinal reinforcing beam 520. Figure 5 and Figure 6 Shown are three-dimensional structural diagrams of the transverse reinforcement beam 510 and the longitudinal reinforcement beam 520 , respectively, and the transverse reinforcement beam 510 and the longitudinal reinforcement beam 520 intersect each other.

[0044] It can be understood that in this implementation, the transverse reinforcement beam 510 and the longitudinal reinforcement beam 520 are two vertical reinforcement beams. The structure of the cross-vertical reinforcement beams 500 can increase the overall stability of the battery module fixing device.

[0045] It should be noted that the length of the transverse reinforcement beam 510 and the length of the longitudinal reinforcement beam 520 can be set according to specific needs. In order to make the supporting stability of the transverse reinforcement beam 510 and the longitudinal reinforcement beam 520 better, the length of the transverse reinforcement beam 510 (here the transverse direction is referred to as the first direction) can be equal to or greater than the length of the battery cell module 400 in the first direction, and the length of the longitudinal reinforcement beam 520 (here the longitudinal direction is referred to as the second direction) can be equal to or greater than the length of the battery cell module 400 in the second direction.

[0046] In an optional implementation, Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the transverse reinforcement beam 510 is parallel to the cross beam 200, and the transverse reinforcement beam 510 has a first supporting side 511, and the transverse reinforcement beam 510 is convex in the direction away from the first supporting side 511, and the longitudinal reinforcement beam 520 has a second supporting side 521, and the longitudinal reinforcement beam 520 is convex in the direction toward the second supporting side 521.

[0047] It can be understood that the cross beam 200 and the reinforcing beam 500 are located on opposite sides of the base 100, and the cross beam 200 is provided with a protrusion in the direction toward the battery cell module 400 to enhance its supporting stability, while the longitudinal reinforcing beam 520 is perpendicular to the cross beam 200, and the longitudinal reinforcing beam 520 is provided in a protrusion shape in the direction toward its second supporting side 510, so as to support the cross beam 200 and enhance the supporting stability of the cross beam 200. In order to further increase the supporting stability of the longitudinal reinforcing beam 520, the number of the longitudinal reinforcing beams 520 can be multiple. In order to further save the material of the longitudinal reinforcing beam 520 on the basis of increasing the supporting stability, the number of the longitudinal reinforcing beams 520 can be set to two, and the two longitudinal reinforcing beams 520 are respectively located on opposite sides of the base 100.

[0048] It can be further understood that the transverse reinforcement beam 510 is perpendicular to and intersects the longitudinal reinforcement beam 520 , thereby making the installation structure of the longitudinal reinforcement beam 520 more stable.

[0049] In an optional implementation, when there are multiple battery cell modules 400, a cross beam reinforcement beam 510 can be disposed between two adjacent battery cell modules 400, thereby making the connection between the two battery cell modules 400 more stable and preventing the battery cells from falling off from the fixed module.

[0050] In an optional implementation, Figure 1 As shown, the battery cell module fixing device further includes an insulating film 600 , which is disposed on the battery cell supporting side 210 of the beam 200 , and the insulating film 600 and the structural adhesive 300 are located in different areas of the battery cell supporting side 210 .

[0051] It is understandable that if the insulating film 600 and the structural adhesive 300 are mixed together, the insulating film 600 will affect the bonding effect of the structural adhesive 300. Therefore, the insulating film 600 and the structural adhesive 300 are arranged in different areas of the battery cell support side. While ensuring the insulation of the battery cell module 400 and the beam 200, the reliability of the bonding of the structural adhesive 300 to the battery cell module 400 can also be ensured.

[0052] In an optional implementation, the battery module fixing device further includes a buffer wall 700. Figure 7 FIG. 7 is a three-dimensional structural diagram of a buffer wall 700 provided in an embodiment of the present utility model, which is used to buffer the expansion of the battery cell. Figure 2 and Figure 3 As shown, the buffer wall 700 is fixedly connected to the crossbeam 200 .

[0053] It should be noted that the buffer wall 700 can be any wall-like structure that can play a buffering role. For example, the buffer wall 700 can be a wall-like structure made of elastic material. The buffer wall 700 can also have a multi-layer structure, and the multi-layer structures are interconnected and have gaps, so as to achieve the buffering effect of the buffer wall 700.

[0054] In an optional implementation, the fixed connection between the buffer wall 700 and the crossbeam 200 may be a detachable connection to facilitate maintenance and replacement of the buffer wall 700 and the crossbeam 200 .

[0055] In an optional implementation, in order to make the buffer wall 700 have a better buffering effect on the expansion of the battery cell, the buffer wall 700 may abut against the side of the battery cell where the expansion is most severe.

[0056] In an optional implementation, in order to make the battery cell module 400 more reliably fixed, a binding strap 1000 may be provided on the periphery of the battery cell module 400 and the buffer wall 700 , and the battery cell module 400 and the buffer wall 700 are fastened together by the binding strap 1000 .

[0057] In an optional implementation, Figures 1 to 3 As shown, the battery module fixing device further includes a screw 800 , which penetrates and is connected to the buffer wall 700 , and the tail of the screw 800 is fixedly connected to the crossbeam 200 .

[0058] In an optional implementation, in order to facilitate the connection between the screw 800 and the beam 200, a connecting block 900 can be set between the screw 800 and the beam 200 to connect the screw 800 and the beam 200 through the connecting block 900. In order to facilitate the connection between the connecting block 900 and the beam 200, an installation positioning component can be set on the edge of the connecting block 900.

[0059] In an optional implementation, Figure 7 As shown, the buffer wall 700 is provided with transverse reinforcing ribs 710 and longitudinal reinforcing ribs 720, and the transverse reinforcing ribs 710 and the longitudinal reinforcing ribs 720 are intersecting with each other.

[0060] It can be understood that the transverse reinforcement ribs 710 are perpendicular to the longitudinal reinforcement ribs 720, and the cross beam reinforcement ribs 710 cross the longitudinal reinforcement ribs 720. This structure in which the transverse reinforcement ribs 710 and the longitudinal reinforcement ribs 720 cross vertically can effectively enhance the structural stability of the buffer wall 700, so that the buffer wall 700 can effectively suppress the expansion of the battery cell when the battery cell expands.

[0061] In an optional implementation, Figure 7As shown, a structural reinforcement column 730 is also provided on the buffer wall 700 . The structural reinforcement column 730 is located between two adjacent transverse reinforcement ribs 710 , and a reinforcement wall 740 is connected between the structural reinforcement column 730 and each adjacent transverse reinforcement rib 710 .

[0062] It is understandable that in order to make the structural reinforcement column 730 have a better effect of reinforcing the structure of the buffer wall 700, the structural reinforcement column 730 can be arranged in the middle position of two adjacent transverse reinforcement ribs 710;

[0063] Optionally, in order to save the material of the structural reinforcement column 730 and reduce the overall mass of the battery module fixing device, the structural reinforcement column 730 can be set as a hollow structure as a whole;

[0064] It can be understood that by connecting the reinforcing wall 740 between the structural reinforcing column 730 and the adjacent transverse reinforcing rib 710 , the stability of the overall structure of the buffer wall 700 can be enhanced by the reinforcing wall 740 ;

[0065] In an optional implementation, in order to further enhance the stability of the buffer wall 700 structure, the height of the transverse reinforcing rib 710 may be flush with the height of the reinforcing wall 740 at the connection between the transverse reinforcing rib 710 and the reinforcing wall 740 .

[0066] In an optional implementation, Figure 8 The three-dimensional structure diagram of the buffer wall 700 in another direction is shown. Figure 7 and Figure 8 As shown, a shrink-proof groove 750 is provided on the side of the buffer wall 700 .

[0067] It is understandable that the anti-shrinkage groove 750 is provided on the side of the buffer wall 700 to prevent the buffer wall 700 from expanding due to excessive heat during casting and shrinking during cooling, so that the shape structure will not change significantly to affect the overall structure of the battery module fixing device.

[0068] It should be noted that the anti-shrinkage groove 750 arranged on the side of the buffer wall 700 can be arranged on the side away from the battery cell module 400, or on the side close to the battery cell module 400. In order to effectively prevent the shrinkage of the buffer wall 700, the anti-shrinkage groove 750 can be arranged on the side of the buffer wall 700 close to the battery cell module 400 and on the side away from the battery cell module 400.

[0069] In an optional implementation, Figures 1 to 3 As shown, the battery cell module fixing device further includes a top cover 1100 , which abuts against the battery cell module 400 , and the top cover 1100 and the base 100 are respectively located on two opposite sides of the battery cell module 400 .

[0070] The technical solution provided by the present invention is introduced in detail above. The principle and implementation mode of the present invention are explained by using specific examples in the present invention. The description of the above embodiments is only used to help understand the structure and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

[0071] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A battery cell module fixing device, characterized in that: include: Pedestal; A crossbeam, the crossbeam is arranged on the base, the crossbeam has a battery cell supporting side, the crossbeam is convex in a direction toward the battery cell supporting side, and an installation positioning portion is arranged at an edge of the crossbeam; Structural adhesive, the structural adhesive is bonded to the battery cell supporting side of the crossbeam.

2. The battery module fixing device according to claim 1, characterized in that: The installation positioning portion changes in a sawtooth shape along the edge of the crossbeam, and the installation positioning portion is convex in a direction away from the crossbeam.

3. The battery module fixing device according to claim 1, characterized in that: It also includes a reinforcing beam, which is arranged on a side of the base away from the cross beam. The reinforcing beam includes a transverse reinforcing beam and a longitudinal reinforcing beam, and the transverse reinforcing beam and the longitudinal reinforcing beam intersect each other.

4. The battery module fixing device according to claim 3, characterized in that: The transverse reinforcement beam is parallel to the cross beam, and the transverse reinforcement beam has a first supporting side, and the transverse reinforcement beam is convex in a direction away from the first supporting side, and the longitudinal reinforcement beam has a second supporting side, and the longitudinal reinforcement beam is convex in a direction toward the second supporting side.

5. The battery module fixing device according to claim 1, characterized in that: It also includes an insulating film, which is arranged on the battery cell supporting side of the beam, and the insulating film and the structural adhesive are located in different areas of the battery cell supporting side.

6. The battery module fixing device according to claim 1, characterized in that: It also includes a buffer wall for buffering the expansion of the battery core, and the buffer wall is fixedly connected to the crossbeam.

7. The battery module fixing device according to claim 6, characterized in that: It also includes a screw rod, which penetrates and is connected to the buffer wall, and the tail of the screw rod is fixedly connected to the cross beam.

8. The battery module fixing device according to claim 6, characterized in that: The buffer wall is provided with transverse reinforcing ribs and longitudinal reinforcing ribs, and the transverse reinforcing ribs and the longitudinal reinforcing ribs intersect each other.

9. The battery module fixing device according to claim 8, characterized in that: A structural reinforcement column is also provided on the buffer wall. The structural reinforcement column is located between two adjacent transverse reinforcement ribs, and a reinforcement wall is connected between the structural reinforcement column and each adjacent transverse reinforcement rib.

10. The battery core module fixing device according to claim 6, characterized in that: The side edge of the buffer wall is provided with an anti-shrinkage groove.

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