Fixing device for mounting-hole-free protection plate of battery module and battery comprising fixing device

Abstract

The utility model relates to a fixing device for a mounting-hole-free protection plate of a battery module and a battery comprising the fixing device, the fixing device comprises a fixing part, the fixing part is detachably arranged at the top of a battery shell, the fixing part comprises a pressing strip arranged along the transverse direction of the battery shell, side baffles are arranged on two sides of the pressing strip, and the side baffles are arranged on the top of the battery shell. Limiting grooves for supporting the protection plate are correspondingly formed in the two side baffles, and the protection plate is clamped in the two limiting grooves in the longitudinal direction of the battery shell so as to limit transverse displacement of the protection plate; the bridge-shaped piece strides over the protection plate in the width direction of the protection plate, and the two ends of the bridge-shaped piece are detachably connected to the pressing strips close to the two side edges of the protection plate so as to limit longitudinal displacement of the protection plate; the flexible buffering piece is arranged on the pressing strip and abuts against the bottom of the protection plate. Through the combined design of the fixing piece, the bridge-shaped piece and the flexible buffering piece, effective fixing of the protection plate can be achieved, and the problems caused by gluing fixing are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of battery protection plates, and in particular to a fixing device for a protection plate without mounting holes of a battery module and a battery comprising the same. Background Art

[0002] During the production and assembly of battery modules, the protective plate is a critical component, and its stability and reliability are directly related to the safety, performance, and service life of the entire battery module. Traditionally, various methods have been used to secure the protective plate, but securing it without mounting holes presents a technical challenge. Since these protective plates lack pre-designed holes for screws or other mechanical fastening methods, traditional fastener fixing methods cannot be directly applied, limiting their installation flexibility and efficiency. Existing solutions employ gluing, where adhesives (such as epoxy resins and polyurethanes) are used to adhere the protective plate to the battery module. However, this presents several challenges. First, the gluing process requires precise control of the amount and distribution of the adhesive to ensure uniform and secure adhesion, requiring high operator skill. Second, the curing process is time-consuming, often requiring a period of time to fully cure and achieve the desired bond strength. This not only increases production line cycle time but also increases production costs. Furthermore, uncured adhesive is highly fluid and prone to overflow during handling, contaminating surrounding electrical components and structural parts of the battery module, as well as the production line environment. Therefore, how to develop a fixing device for battery module protective plates without mounting holes, simplify the operating process, improve production efficiency, reduce environmental pollution and cost increase caused by the use of glue, and adapt to the batch and automated operation requirements of battery module production lines is an urgent problem that needs to be solved. Utility Model Content

[0003] In response to the problems existing in the prior art, the first purpose of the present utility model is to provide a fixing device for a protective plate without mounting holes for a battery module, a fixing part, a bridge part and a flexible buffer part. Through the combined design of the fixing part, the bridge part and the flexible buffer part, the protective plate can be effectively fixed.

[0004] The second object of the present utility model is to provide a battery, comprising the above-mentioned fixing device, a battery housing, a battery module and a protection plate.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A fixing device for a protective plate of a battery module without mounting holes, comprising: a fixing part, which is detachably arranged on the top of the battery shell, the fixing part including a pressure strip arranged along the transverse direction of the battery shell, side baffles being arranged on both sides of the pressure strip, and limiting grooves for supporting the protective plate being correspondingly arranged on the two side baffles, the protective plate being clamped in the two limiting grooves along the longitudinal direction of the battery shell to limit the lateral displacement of the protective plate; a bridge-shaped part, which spans the protective plate in the width direction of the protective plate, and the two ends of the bridge-shaped part are detachably connected to the pressure strips near the two side edges of the protective plate to limit the longitudinal displacement of the protective plate; a flexible buffer part, which is arranged on the pressure strip and abuts against the bottom of the protective plate.

[0007] Furthermore, the bridge-shaped member is an inverted U-shaped structure, which includes a middle horizontal section and parallel vertical sections respectively connected to both ends of the horizontal section, wherein the horizontal section is located on the protective plate, and the end of each vertical section is fixed on the pressure strip.

[0008] Furthermore, at least one card block is provided at the bottom of the horizontal section, and at least one groove matching with the card block is provided at the top of the protection plate, and the card block is engaged in the groove.

[0009] Furthermore, the number of the clamping blocks is two, and the two clamping blocks are respectively located at the bottom near both sides of the horizontal section. The number of the grooves is two, and they are arranged corresponding to the two clamping blocks.

[0010] Furthermore, a first fixing hole is provided at the end of the vertical section, and a second fixing hole corresponding to the first fixing hole is provided on the pressure strip, and the first fixing hole is connected to the second fixing hole by a bolt.

[0011] Furthermore, the pressure strip is provided with a plurality of through holes at regular intervals along its length direction for heat dissipation of the battery module.

[0012] Furthermore, the number of the fixing members is two, and the two fixing members are arranged on the top of the battery housing at a certain interval along the longitudinal direction of the battery housing.

[0013] Furthermore, a plurality of first connection holes are provided at both ends of the pressure strip, and a plurality of second connection holes corresponding to the first connection holes are provided on the side of the battery housing, and the first connection holes are connected to the second connection holes by bolts.

[0014] Furthermore, the flexible buffer is one or more of foam, foam or rubber.

[0015] A battery comprises: the above-mentioned fixing device; a battery shell, the top of the battery shell is open and a battery shell cover is detachably provided on the top, and the fixing device is arranged on the top of the battery shell; a battery module, the battery module is arranged in the internal space of the battery shell, the fixing device is located above the battery module and pressed onto the battery module; a protective plate, the protective plate is fixed in the fixing device, one end of the protective plate is electrically connected to the battery module, and the other end of the protective plate is electrically connected to the battery shell.

[0016] The utility model has the following advantages:

[0017] 1. Compared to traditional gluing methods, the present invention's fixing device for battery module protective plates without mounting holes solves the problems of weak fixation, glue residue, long curing time, and difficulty in disassembly and replacement caused by gluing. Through the combined design of fixing parts, bridge parts, and flexible buffer parts, the protective plate can be effectively fixed, ensuring stability while avoiding the problems caused by gluing. At the same time, the design of the device enables production line employees to perform batch operations, improving production efficiency and reducing production costs.

[0018] 2. Through the inverted U-shaped structure and detachable connection of the bridge, as well as the retaining groove design of the pressure strip and side baffles, this utility model achieves comprehensive restraint of the six degrees of freedom of the protective plate, effectively securing it and ensuring its fixed strength. This comprehensive restraint not only improves the stability and reliability of the protective plate in the battery module, but also further enhances the overall performance of the battery, including safety, reliability, and durability. This fixing device and the battery used in it have broad application prospects in the battery manufacturing field. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the fixing device for the protective plate without mounting holes of the battery module of the present invention.

[0020] Figure 2 It is a three-dimensional structural schematic diagram of the fixing device for the protective plate without mounting holes of the battery module and the battery housing of the present invention.

[0021] Figure 3 This is a three-dimensional exploded view of a fixing device for a battery module protection plate without mounting holes according to the present invention.

[0022] Figure 4 It is a three-dimensional structural diagram of the fixing piece of the present utility model.

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the bridge-shaped member of the present invention.

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the protection plate of the present utility model.

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of a battery with a fixing device for a battery module without a mounting hole protection plate according to the present invention.

[0026] Among them, 1 is a fixing part, 101 is a pressure strip, 101a is a second fixing hole, 101b is a through hole, 101c is a first connecting hole, 102 is a side baffle, 102a is a limiting groove, 2 is a bridge-shaped part, 201 is a horizontal section, 201a is a block, 202 is a vertical section, 202a is a first fixing hole, 3 is a flexible buffer part, 4 is a battery shell, 401 is a second connecting hole, 402 is an opening, 403 is a power socket, 404 is a display screen, 5 is a protection board, 501 is a groove, 502 is a voltage acquisition interface, 503 is a battery negative electrode interface, 504 is a protection board output negative electrode interface, and 6 is a battery module. DETAILED DESCRIPTION

[0027] The following description is essentially only exemplary and is not intended to limit the present invention, its application, or use. It will be further understood that the terms "comprise" and / or "comprising" specify the existence of the features, wholes, steps, operations, elements and / or parts described when used in this specification, but do not exclude the existence of one or more other features, wholes, steps, operations, elements, parts and / or their groups or add one or more other features, wholes, steps, operations, elements, parts and / or their groups. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. It will be understood that when an element, component and / or part is referred to as "connected to another element, component and / or part", it can be directly connected to another element, component and / or part, or there can be an intermediate element. It will be understood that although the terms "first", "second" and the like can be used to describe various elements, components and / or parts in this article, these elements, components and / or parts should not be limited by these terms. These terms are only used to distinguish an element, component or part from another element, component or part. Therefore, the first element, component or part discussed below can be referred to as the second element, component or part without departing from the teachings of the present invention. Unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the relevant field and / or the context of this specification, and will not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein.

[0028] It should be understood that, in order to clearly show the contents therein, the drawings herein are not drawn to scale, and the same or similar reference numerals indicate the same or similar components or parts. In addition, it should be understood that any embodiments described in this application and the technical features included therein can be combined with each other.

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0030] like Figure 1-6FIG. 1 shows a fixing device for a battery module protective plate without mounting holes, comprising a fixing member 1, a bridge member 2, and a flexible buffer member 3, which together form a locking space for fixing the protective plate 5. In the figure, X represents the longitudinal direction of the battery housing 4, and Y represents the transverse direction of the battery housing 4. The fixing member 1 is detachably mounted on the top of the battery housing 4, which has an opening 402 and is equipped with a battery cover (not shown). The fixing member 1 includes a bead 101 disposed along the transverse direction of the battery housing 4. The length of the bead 101 is substantially the same as the width of the battery housing 4, ensuring that the bead 101 can be securely attached to the top of the battery housing 4 and improving the reliability of the fixation. A plurality of first connection holes 101c are provided at both ends of the bead 101, and a plurality of second connection holes 401 corresponding to the first connection holes 101c are provided on the side of the battery housing 4. The first connection holes 101c are connected to the second connection holes 401 by bolts. The ends of the bead 101 can also be fixed to the top side of the battery housing 4 by, for example, keying, riveting, or other connection methods. The material of the pressure strip 101 can be steel, aluminum or other metals to adapt to different application scenarios and performance requirements. Side baffles 102 are provided on both sides of the pressure strip 101. The two side baffles 102 are correspondingly provided with limiting grooves 102a for supporting the protective plate 5. The length of the side baffles 102 can be the same as or different from the length of the pressure strip 101. The length of the side baffles 102 must be greater than the width of the protective plate 5, thereby providing a stable support base for the protective plate 5. The side baffles 102 are located below the protective plate 5 and ensure that the length of the side baffles 102 is greater than the width of the protective plate 5. The protective plate 5 can be clamped in the two limiting grooves 102a along the longitudinal direction of the battery housing 4 to limit the lateral displacement of the protective plate 5 and enhance the stability of the structure. The retaining grooves 102a extend downward from the top of the side guard 102. The depth of the grooves is less than the height of the side guard 102. This means that when the protective plate 5 is engaged between the two retaining grooves 102a, a certain gap remains between its bottom and the pressure strip 101. This space is reserved for the installation of the flexible buffer 3, further enhancing the shock absorption effect and assembly flexibility. In an embodiment not shown, rubber washers are installed on the inner sidewalls of the retaining grooves 102a to effectively prevent wear or damage to the protective plate 5 during the engagement process, further enhancing the durability and protective performance of the device.

[0031] There are two fixing members 1, which are arranged at a certain interval along the longitudinal direction of the battery housing 4 on the top of the battery housing 4. The fixing members 1 not only secure the protective plate 5 to limit its lateral displacement, but also press the fixing members 1 against the top of the battery module 6, effectively preventing the battery module 6 from loosening or shifting due to vibration or external forces. The number of fixing members 1 can be two, three, four, five, six, etc., and can be configured according to the size of the battery module 6 to make the entire battery structure more stable.

[0032] like Figure 1 、 2 As shown in Figures 3 and 5, the bridge member 2 spans the protective plate 5 in the width direction of the protective plate 5, and the two ends of the bridge member 2 are detachably connected to the molding 101 near the two side edges of the protective plate 5 to limit the longitudinal displacement of the protective plate 5. The bridge member 2 is an inverted U-shaped structure, which includes a middle horizontal section 201 and parallel vertical sections 202 respectively connected to the two ends of the horizontal section 201, wherein the horizontal section 201 is located on the protective plate 5, and the ends of each vertical section 202 are fixed to the molding 101, thereby forming a stable support structure. The two ends can be fixed to the surface of the molding 101 by, for example, bolts, keyed rivets or other connection methods. The vertical section 202 of the inverted U-shaped bridge member 2 is substantially perpendicular to the molding 101, thereby forming a connecting port for receiving the protective plate 5 between the horizontal section 201 of the bridge member 2 and the molding 101. At least one latch 201a is provided at the bottom of the horizontal section 201, and at least one groove 501 is provided at the top of the protective plate 5 to mate with the latch 201a. The latch 201a is engaged in the groove 501. There are two latches 201a, located at the bottom near both sides of the horizontal section 201. There are two grooves 501, each corresponding to the two latches 201a. This design not only enhances the stability of the engagement but also further locks the position of the protective plate 5, preventing it from moving in any direction. The number of latches 201a and grooves 501 can be one, three, four, or other, depending on the size of the protective plate 5. A first fixing hole 202a is provided at the end of the vertical section 202, and a second fixing hole 101a corresponding to the first fixing hole 202a is provided on the pressure strip 101. The first fixing hole 202a is connected to the second fixing hole 101a by bolts, ensuring the reliability and durability of the entire fixing device.

[0033] In an unillustrated embodiment, the horizontal section 201 of the bridge member 2 comprises a telescopic section and a sleeve section, with the telescopic section slidably connected to the sleeve section. This sliding connection allows for flexible adjustment of the length of the horizontal section 201, ensuring that the bridge member 2 can accommodate protective panels 5 of varying widths. This allows for fine-tuning of the bridge member 2 without replacing the entire bridge member 2. To accommodate adjustment of the length of the horizontal section 201, multiple second fixing holes 101a in the pressure strip 101 can be configured as needed to ensure they can be bolted to the first fixing holes 202a at different locations.

[0034] like Figure 1 and Figure 3As shown, the flexible buffer 3 is mounted on the pressure strip 101 and abuts the bottom of the protective plate 5, providing critical cushioning and protection. It reduces the impact and vibration that the protective plate 5 may experience during installation or use, thereby improving the safety and stability of the entire battery module 6. The flexible buffer 3 is made of one or more of foam, foam, or rubber.

[0035] like Figure 1-4 As shown, the holding strip 101 is provided with a plurality of through holes 101b at regular intervals along its length for dissipating heat from the battery module 6. To prevent the holding strip 101 from obstructing the heat dissipation of the battery module 6, the heat generated by the battery module 6 during operation is dissipated to the outside through these through holes 101b, effectively reducing the temperature inside the battery while improving the operating efficiency and safety of the battery module 6.

[0036] like Figure 7 As shown, a battery comprises: the aforementioned fixing device; a battery housing 4, the top of which is open to form an opening 402 and a removable battery shell cover is provided on the top thereof; the fixing device is disposed on the top of the battery housing 4, wherein the side of the battery housing 4 also has a power socket 403 for outputting power from the battery module 6 and a display screen 404 for displaying the power level. The battery module 6, as the core energy unit of the battery, is disposed within the interior space of the battery housing 4. The fixing device is located above the battery module 6 and is pressed against the battery module 6, ensuring the stability and reliability of the battery module 6 during operation. The protection board 5 is fixed in the fixing device. It is not only a bridge between the battery module 6 and the external circuit, but also protects the battery module 6 from damage. One end of the protection board 5 is electrically connected to the battery module 6, and the other end of the protection board 5 is electrically connected to the battery housing 4. One end of the protection board 5 has a voltage acquisition interface 502 for real-time monitoring of the voltage status of the battery module 6, and the other end has a protection board output negative electrode interface 504 to ensure the stability and safety of the battery output. The side of the protection board 5 is provided with a battery negative electrode interface 503 for external connection of the battery. The shape of the bridge member 2 needs to be adjusted accordingly according to the position of the above-mentioned interface to avoid the bridge member 2 blocking any interface.

[0037] Based on the above-mentioned fixing device for the protective plate of the battery module without mounting hole and the battery including the same, during installation, the battery module 6 is placed inside the battery shell 4, the fixing part 1 is placed on the top along its longitudinal direction according to the size of the battery shell 4, and fixed with bolts, and the flexible buffer part 3 is placed on the pressure strip 101 of the fixing part 1. Then, the protective plate 5 is inserted into the limiting groove 102a of the side baffle 102 of the fixing part 1 along the longitudinal direction of the battery shell 4 to limit the lateral movement of the protective plate 5, and then the bridge part 2 is placed across the protective plate 5, the block 201a is inserted into the groove 501 of the protective plate 5, and the vertical section 202 of the bridge part 2 is connected to the pressure strip 101 by bolts to limit the longitudinal displacement of the protective plate 5. Subsequently, the two ends of the protective plate 5 are electrically connected to the battery module 6 and the battery shell 4 respectively. Finally, the battery shell cover is placed on the top of the battery shell 4 and fixed. After the installation is completed, an inspection test is carried out to ensure that all components are installed correctly and the battery can work normally.

[0038] In general, the fixing device for the protective plate without mounting holes of the battery module of the present invention solves the problems of loose fixation, glue residue, long curing time and difficulty in disassembly and replacement caused by gluing, compared with the traditional gluing fixing method. Through the combined design of the fixing parts, the bridge-shaped parts and the flexible buffer parts, the effective fixation of the protective plate can be achieved, which not only ensures the stability but also avoids the problems caused by gluing. At the same time, the design of the device enables production line employees to carry out batch operations, improves production efficiency and reduces production costs. The utility model realizes comprehensive constraints on the six degrees of freedom of the protective plate through the inverted U-shaped structure and detachable connection method of the bridge-shaped part, as well as the limit groove design of the pressure strip and the side baffle, thereby effectively achieving fixation and ensuring the fixing strength of the protective plate. This comprehensive constraint not only improves the stability and reliability of the protective plate in the battery module, but also further enhances the overall performance of the battery, including safety, reliability and durability. The fixing device and the battery used in it have broad application prospects in the field of battery manufacturing.

[0039] The above embodiments are preferred implementation methods of the present invention, but the implementation methods of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A fixing device for a battery module protective plate without mounting holes, characterized in that: include: A fixing member, the fixing member being detachably mounted on the top of the battery housing, the fixing member comprising a pressure strip arranged along the transverse direction of the battery housing, side baffles being provided on both sides of the pressure strip, and limiting grooves for supporting a protective plate correspondingly provided on the two side baffles, the protective plate being snapped into the two limiting grooves along the longitudinal direction of the battery housing to limit the lateral displacement of the protective plate; a bridge-shaped member, the bridge-shaped member spanning the protection plate in the width direction of the protection plate, and the two ends of the bridge-shaped member being detachably connected to the pressure strips near the two side edges of the protection plate to limit the longitudinal displacement of the protection plate; A flexible buffer is provided on the pressure strip and abuts against the bottom of the protection plate.

2. A fixing device for a battery module protective plate without mounting holes according to claim 1, characterized in that: The bridge-shaped member is an inverted U-shaped structure, which includes a middle horizontal section and parallel vertical sections respectively connected to the two ends of the horizontal section, wherein the horizontal section is located on the protective plate, and the end of each vertical section is fixed on the pressure strip.

3. A fixing device for a battery module protective plate without mounting holes according to claim 2, characterized in that: At least one clamping block is provided at the bottom of the horizontal section, and at least one groove matched with the clamping block is provided at the top of the protection plate, and the clamping block is clamped in the groove.

4. A fixing device for a battery module protective plate without mounting holes according to claim 3, characterized in that: There are two clamping blocks, which are respectively located at the bottom near both sides of the horizontal section. There are two grooves, which are arranged corresponding to the two clamping blocks.

5. A fixing device for a battery module protective plate without mounting holes according to claim 2, characterized in that: A first fixing hole is provided at the end of the vertical section, and a second fixing hole corresponding to the first fixing hole is provided on the pressure strip, and the first fixing hole is connected to the second fixing hole by a bolt.

6. A fixing device for a battery module protective plate without mounting holes according to claim 1, characterized in that: The pressure strip is provided with a plurality of through holes at regular intervals along its length direction for heat dissipation of the battery module.

7. A fixing device for a battery module protective plate without mounting holes according to claim 1, characterized in that: The number of the fixing members is two, and the two fixing members are arranged at a certain interval on the top of the battery housing along the longitudinal direction of the battery housing.

8. The fixing device for a battery module protective plate without mounting holes according to claim 1, characterized in that: A plurality of first connection holes are provided at both ends of the pressure strip, a plurality of second connection holes corresponding to the first connection holes are provided on the side of the battery housing, and the first connection holes are connected to the second connection holes by bolts.

9. The fixing device for a battery module protective plate without mounting holes according to claim 1, characterized in that: The flexible buffer is one or more of foam, foam or rubber.

10. A battery, characterized in that: include: The fixing device according to any one of claims 1 to 9; A battery housing, wherein the top of the battery housing is open and a battery housing cover is detachably provided on the top thereof, and the fixing device is disposed on the top of the battery housing; a battery module, wherein the battery module is disposed in the interior space of the battery housing, and the fixing device is located above the battery module and pressed onto the battery module; A protection plate is fixed in the fixing device, one end of the protection plate is electrically connected to the battery module, and the other end of the protection plate is electrically connected to the battery housing.

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