Battery cell fixing structure and battery module

Abstract

The utility model relates to the technical field of energy storage power supplies, in particular to a battery cell fixing structure and a battery module, which comprise a base and a battery assembly placed on the base, and are characterized in that a plurality of pressing plates are distributed at the top of the battery assembly at intervals, and limiting structures are arranged between the pressing plates and a bracket of the battery assembly; according to the utility model, the pressing plate is adopted to abut against and position the top of the battery assembly, so that the installation stability of the battery assembly can be greatly improved, and a limiting structure is also arranged between the pressing plate and the battery assembly, so that the battery assembly is prevented from being damaged. The limiting structure is used for carrying out movement limiting on the pressing plate on the battery assembly in the X direction and the Y direction, so that the limiting and fixing effects of the pressing plate on the battery assembly are guaranteed, in addition, the mode that the screw rods are connected in a penetrating mode is adopted, assembling and disassembling are easy, the assembling stability is improved, and meanwhile the convenience of the assembling technology is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage power supply, in particular to a fixing structure of an electric core and a battery module. Background Art

[0002] In today's era of rapid technological development, battery modules have become an indispensable part of many devices, whether it is electric vehicles, portable electronic devices or energy storage systems, the stability and safety of battery modules are crucial to the performance of the entire device. Therefore, the fixing method of battery modules has become an issue that cannot be ignored.

[0003] The traditional fixing method is mainly to fix the plastic bracket of the module directly to the device housing. For details, please refer to the energy storage power supply disclosed in the existing Chinese patent announcement number "CN116613446A". The energy storage power supply includes a housing, a battery pack and an electrical component. The battery pack also includes a battery component bracket and a battery component arranged in the battery component bracket, wherein the battery component bracket can be made of polycarbonate (PC) or polypropylene.

[0004] However, the reliability of this method is not high, and the plastic bracket is prone to deformation or damage, which in turn affects the stability of the battery module and may even pose a threat to the safety of the product. Utility Model Content

[0005] The purpose of the utility model is to solve the above-mentioned shortcomings in the prior art and to propose a battery core fixing structure and a battery module.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A battery cell fixing structure is designed to fix a battery assembly, comprising a base, pressure plates are spaced apart on the top of the battery assembly, and a limiting structure is provided between the pressure plate and the bracket of the battery assembly;

[0008] Among them, a connecting piece is also passed through the pressure plate, and a locking piece is arranged at the bottom of the base. The connecting piece is used to connect with the locking piece to press the pressure plate against the top of the battery assembly, and there are multiple pressure plates.

[0009] Furthermore, the limiting structure includes a limiting portion formed on the end surface of the pressure plate, the limiting portion protrudes from the upper surface of the pressure plate to the lower surface thereof, and a groove matched with the limiting portion is provided on the bracket of the battery assembly.

[0010] Furthermore, the limiting structure also includes a positioning protrusion formed at the bottom of the pressure plate, and there are at least two positioning protrusions distributed along the bottom of the pressure plate. The two positioning protrusions are respectively clamped on the outside of the brackets on both sides of the battery assembly.

[0011] Furthermore, the positioning protrusion is a protrusion formed by stamping the upper surface of the pressing plate downward.

[0012] Furthermore, a reinforcement ring is integrally formed on the top of the pressing plate, and a box-type structural component is jointly constructed between the reinforcement ring and the pressing plate.

[0013] Furthermore, the connecting member is a screw rod penetrating the end surface of the pressing plate, and a limiting platform is fixedly provided on the top of the screw rod.

[0014] Furthermore, the locking member is a nut arranged below the base, and one end of the screw rod passes through the base and is threadedly connected to the nut.

[0015] Furthermore, a plurality of rectangular grooves are provided at the bottom of the base, a fixing plate is fixedly installed on one side of the nut, the fixing plate is placed in the rectangular groove, and an enclosure is also provided on the inner side of the base, and the battery assembly is placed in the enclosure.

[0016] Furthermore, two rollers are fixedly mounted on one side of the bottom of the base, and two supporting feet are fixedly mounted on the other side.

[0017] In addition, the utility model also proposes a battery module, including the fixing structure of the battery core as claimed in claim 1, a battery assembly and an inverter, wherein the battery assembly is installed on the base, and the inverter is installed above the pressure plate.

[0018] The utility model proposes a fixing structure of a battery cell and a battery module, the beneficial effects of which are: in the utility model, a pressure plate is used to perform interference positioning on the top of the battery assembly, which can greatly improve the installation stability of the battery assembly; secondly, a limiting structure is provided between the pressure plate and the battery assembly, and the limiting structure is used to limit the movement of the pressure plate in the X and Y directions on the battery assembly, thereby ensuring the limiting and fixing effect of the pressure plate on the battery assembly; in addition, the utility model adopts a screw rod for penetrating connection, which is simple to assemble and disassemble, and ensures the convenience of the assembly process while improving the assembly stability; the overall structural design is reasonable, and the reliability and safety of the use of existing battery assemblies are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the explosion structure of the utility model;

[0020] Figure 2 for Figure 1A schematic diagram of the enlarged structure of area A;

[0021] Figure 3 This is a schematic diagram of the locking member structure of the utility model.

[0022] In the figure: 1. base; 11. enclosure; 12. roller; 13. support foot; 2. battery assembly; 21. groove; 3. pressure plate; 31. reinforcement ring; 4. limiting structure; 41. limiting part; 42. positioning protrusion; 5. connecting piece; 6. locking piece; 61. fixing plate. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Reference Figure 1-3 An embodiment of the utility model discloses a fixing structure of a battery cell, which is used to fix a battery assembly 2. Specifically, the fixing structure includes a base 1, and pressure plates 3 are distributed at intervals on the top of the battery assembly 2. A limiting structure 4 is arranged between the pressure plate 3 and the bracket of the battery assembly 2, wherein the pressure plate 3 is provided with a plurality of;

[0025] The pressing plate 3 is also provided with a connecting member 5 , and the bottom of the base 1 is provided with a locking member 6 . The connecting member 5 is used to be connected with the locking member 6 to press the pressing plate 3 against the top of the battery assembly 2 .

[0026] In some embodiments, the limiting structure 4 in the utility model includes a limiting portion 41 formed on the end surface of the pressure plate 3, and the limiting portion 41 protrudes from the upper surface of the pressure plate 3 to its lower surface, and a groove 21 compatible with the limiting portion 41 is provided on the bracket of the battery assembly 2. Specifically, the limiting portion 41 described in this embodiment has a semi-columnar structure. Of course, the groove 21 has an arc structure. During installation, the limiting portions 41 on multiple pressure plates 3 are first placed in the groove 21 of the bracket in turn to achieve positioning of the pressure plate 3.

[0027] Based on the above embodiments, the limiting structure 4 in this embodiment also includes a positioning protrusion 42 formed at the bottom of the pressure plate 3, and there are at least two positioning protrusions 42 distributed along the bottom of the pressure plate 3. The two positioning protrusions 42 are respectively clamped on the outside of the brackets on both sides of the battery assembly 2.

[0028] Specifically, the positioning protrusion 42 is a protrusion formed by stamping downward from the upper surface of the pressure plate 3, that is, when installing and positioning the pressure plate 3, the limiting portion 41 is first positioned in the groove 21 of the bracket. In this process, the positioning protrusions 42 on both sides need to be aligned with the two sides of the bracket, so as to achieve the positioning of the pressure plate 3 in the X and Y directions, reduce the activity space of the pressure plate 3 on the bracket, and improve the stability of the assembly connection. Furthermore, in the present embodiment, four positioning protrusions 42 are provided at the bottom of each pressure plate 3, and are distributed on both sides of the pressure plate 3 in groups of two.

[0029] Furthermore, in this embodiment, a reinforcement ring 31 is integrally formed on the top of the pressure plate 3, and a box-type structural member is jointly constructed between the reinforcement ring 31 and the pressure plate 3. The reinforcement ring 31 is designed to enhance the strength of the entire pressure plate 3 to improve the stability of positioning and fixation. The reinforcement ring 31 described in this embodiment is formed by the upward flange of the pressure plate 3.

[0030] In some embodiments, the connecting member 5 in the utility model is a screw rod penetrated on the end surface of the pressing plate 3, and a through hole for the screw rod to penetrate is opened on the end surface of the pressing plate 3, wherein a limiting platform is fixedly provided on the top of the screw rod, and the limiting platform is used to resist the upper surface of the pressing plate 3 so as to apply downward pressure to the pressing plate 3.

[0031] In some embodiments, the locking member 6 in the present invention is a nut disposed below the base 1 , and one end of the screw rod passes through the base 1 and is threadedly connected to the nut.

[0032] In addition, based on the above embodiment, in this embodiment, a plurality of rectangular grooves are opened at the bottom of the base 1, and a fixing plate 61 is fixedly installed on one side of the nut, and the fixing plate 61 is placed in the rectangular groove, that is, the screw is passed through the pressure plate 3 during installation, and then the bottom of the screw is threadedly connected to the nut under the base 1, so that the pressure plate 3 is fastened to the top of the battery assembly 2. The setting of the fixing plate 61 can increase the locking force area, improve the convenience of the connection between the screw and the nut and the force stability. Specifically, the nut described in this embodiment is riveted to form with the fixing plate 61.

[0033] On the basis of the above embodiment, in order to further position the battery assembly 2, in this embodiment, an enclosure 11 is further provided on the inner side of the base 1, and the battery assembly 2 is placed in the enclosure 11. The enclosure 11 forms a growth direction structure for sleeve-mounting the battery assembly 2, thereby further improving the limiting ability of the battery assembly 2.

[0034] Furthermore, two rollers 12 are fixedly installed on one side of the bottom of the base 1 described in this embodiment, and two supporting feet 13 are fixedly installed on the other side. When the energy storage power supply needs to be moved, one side of the supporting foot 13 can be lifted to make it off the ground. At this time, the energy storage power supply can be moved freely, which greatly improves the portability.

[0035] In addition, the utility model also proposes a battery module, including the above-mentioned battery cell fixing structure, a battery assembly 2 and an inverter, wherein the battery assembly 2 is installed on the base 1. The inverter in this embodiment is not shown in the figure. Specifically, the inverter is installed above the pressure plate 3. The specific installation method of the battery assembly 2 has been described above and will not be repeated here. Since the weight of the battery assembly 2 is greater than that of the inverter, arranging the battery assembly 2 on the base 1 can play a role in adjusting the center of gravity of the battery module, and the heavier battery assembly 2 can support the inverter.

[0036] In summary, the pressure plate 3 is used in the utility model to perform resistance positioning on the top of the battery assembly 2, which can greatly improve the installation stability of the battery assembly 2. Secondly, a limiting structure 4 is also arranged between the pressure plate 3 and the battery assembly 2. The limiting structure 4 is used to limit the movement of the pressure plate 3 in the X and Y directions on the battery assembly 2, thereby ensuring the limiting and fixing effect of the pressure plate 3 on the battery assembly 2. In addition, the utility model adopts a screw rod for penetration connection, which is simple to assemble and disassemble. While improving the assembly stability, it ensures the convenience of the assembly process. The overall structural design is reasonable, which improves the reliability and safety of the existing battery assembly 2.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A battery cell fixing structure for fixing a battery assembly (2), characterized in that: It comprises a base (1), pressure plates (3) are distributed at intervals on the top of the battery assembly (2), and a limiting structure (4) is arranged between the pressure plate (3) and the bracket of the battery assembly (2); The pressure plate (3) is also provided with a connecting piece (5), and the bottom of the base (1) is provided with a locking piece (6), and the connecting piece (5) is used to connect with the locking piece (6) so as to make the pressure plate (3) contact with the top of the battery assembly (2).

2. A battery core fixing structure according to claim 1, characterized in that: The limiting structure (4) comprises a limiting portion (41) formed on the end surface of the pressing plate (3), the limiting portion (41) protruding from the upper surface of the pressing plate (3) toward the lower surface thereof, and a groove (21) adapted to the limiting portion (41) is provided on the bracket of the battery assembly (2), wherein the pressing plate (3) is provided with a plurality of such grooves.

3. A battery core fixing structure according to claim 2, characterized in that: The limiting structure (4) also includes a positioning protrusion (42) formed at the bottom of the pressing plate (3), and at least two positioning protrusions (42) are distributed along the bottom of the pressing plate (3), and the two positioning protrusions (42) are respectively clamped on the outside of the brackets on both sides of the battery assembly (2).

4. A battery core fixing structure according to claim 3, characterized in that: The positioning protrusion (42) is a protrusion formed by punching the upper surface of the pressing plate (3) downward.

5. A battery core fixing structure according to any one of claims 1 to 4, characterized in that: A reinforcing ring (31) is also integrally formed on the top of the pressing plate (3), and a boxed structural component is jointly constructed between the reinforcing ring (31) and the pressing plate (3).

6. The fixing structure of a battery cell according to claim 1, characterized in that: The connecting member (5) is a screw rod that passes through the end surface of the pressing plate (3), and a limiting platform is fixedly arranged on the top of the screw rod.

7. A battery core fixing structure according to claim 6, characterized in that: The locking member (6) is a nut arranged below the base (1); one end of the screw rod passes through the base (1) and is threadedly connected to the nut.

8. A battery core fixing structure according to claim 7, characterized in that: A plurality of rectangular grooves are provided at the bottom of the base (1); a fixing plate (61) is fixedly mounted on one side of the nut; the fixing plate (61) is placed in the rectangular groove; and a retaining portion (11) is also provided on the inner side of the base (1); the battery assembly (2) is placed in the retaining portion (11).

9. The battery cell fixing structure according to claim 1, characterized in that: Two rollers (12) are fixedly mounted on one side of the bottom of the base (1), and two supporting legs (13) are fixedly mounted on the other side.

10. A battery module, characterized in that: It comprises a battery cell fixing structure as claimed in any one of claims 1 to 9, a battery assembly (2) and an inverter, wherein the battery assembly (2) is mounted on the base (1), and the inverter is mounted above the pressure plate (3).

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