Staggered battery module

Abstract

The present application belongs to the technical field of power battery, and particularly relates to a staggered battery module, comprising a plurality of single batteries, a bottom cover, a top cover and a plurality of connecting pipes, the plurality of single batteries are arranged in a staggered manner, the bottom cover is arranged at the bottom of the plurality of single batteries, the top cover is arranged at the top of the plurality of single batteries, and the plurality of connecting pipes are connected between the bottom cover and the top cover. Compared with the prior art, the present application increases the stress points of the module, balances the stress, can form a long module, and can increase the grouping efficiency of the module.

Description

Technical Field

[0001] This invention belongs to the field of power battery technology, and particularly relates to a misaligned battery module. Background Technology

[0002] Power battery modules refer to battery devices that provide mechanical power. Currently, power battery modules are widely used in various industries, such as pure electric vehicles, hybrid power devices, plug-in hybrid electric vehicles, ships, rail transportation, solar energy, and wind power generation systems.

[0003] Typically, a battery module consists of a frame structure formed by welding two end plates and two side plates, which enclose the battery pack to form the module. The battery module is then fixed to the housing through four holes on the end plates. Existing module structures have many components, and the components are generally fixed to the housing at four points on both sides. Therefore, the stress is mainly concentrated at these four points, making it unsuitable for making long modules. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a staggered battery module that increases the number of stress points in the module, balances the stress, and can be made into a long module while increasing the module assembly efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A staggered battery module includes a plurality of individual batteries, a bottom cover, a top cover, and a plurality of connecting tubes. The plurality of individual batteries are staggered among themselves. The bottom cover is placed on the bottom of the plurality of individual batteries, the top cover is placed on the top of the plurality of individual batteries, and the plurality of connecting tubes are connected between the bottom cover and the top cover.

[0006] It should be noted that this invention arranges several individual battery cells in a staggered manner and connects and fixes the bottom cover and top cover with several connecting tubes to form a staggered battery module. This module has multiple locking points, which have a balancing force function. Therefore, the module can be made into a long module, either as a single long module or by directly splicing several modules together. In addition, this battery module has fewer parts and materials, and the assembly process is simple. It eliminates the welding process for end plates and side plates, improving production and assembly efficiency and reducing costs.

[0007] As an improvement to the staggered battery module of the present invention, the bottom cover is provided with a plurality of staggered first grooves, and a first crossbeam is provided between two adjacent first grooves. The crossbeam separates two adjacent first grooves, so that the individual battery cells can be fixed in the first grooves without moving, thereby improving the stability of the entire battery module.

[0008] As an improvement to the staggered battery module described in this invention, a first mounting hole is provided on the left side of one first groove and the right side of the other first groove in two adjacent first grooves. The first mounting holes are distributed at left-right intervals, so that the battery module can have multiple force-bearing points, and the force-bearing points are evenly distributed, which can balance the force.

[0009] As an improvement to the staggered battery module described in this invention, a first support plane is provided at the bottom edge of the first groove in the width direction. The first support plane is for limiting and supporting the individual battery cells disposed inside the groove.

[0010] As an improvement to the staggered battery module of the present invention, the upper cover is provided with a plurality of second grooves whose positions, shapes and sizes match those of the first groove, and a second crossbeam is provided between two adjacent second grooves. The second crossbeam has the same function as the first crossbeam, separating two adjacent second grooves, so that the individual battery cells are fixed in the second grooves and do not move, thereby improving the stability of the battery module.

[0011] As an improvement to the staggered battery module described in this invention, in two adjacent second grooves, a second mounting hole matching the first mounting hole is provided on the left side of one second groove and the right side of the other second groove. The second mounting holes cooperate with the first mounting holes and are distributed at intervals on the left and right sides, so that the battery module can have multiple force-bearing points, and the force-bearing points are evenly distributed to balance the force.

[0012] As an improvement to the misaligned battery module described in this invention, a locking groove is provided on the top of the upper cover at the position corresponding to the second mounting hole. The locking groove is provided to provide a position for the locking bolt. When the battery module of this invention is installed into the housing, the locking bolt sequentially passes through the second mounting hole, the connecting pipe, and the first mounting hole, thereby locking the battery module onto the housing.

[0013] As an improvement to the misaligned battery module described in this invention, a second support plane is provided at the top edge of the second groove in both the length and width directions. The second support plane is used to constrain and fix the individual battery cells.

[0014] As an improvement to the misaligned battery module of the present invention, one end of the connecting tube is inserted into the first mounting hole, and the other end of the connecting tube is inserted into the second mounting hole.

[0015] As an improvement to the staggered battery module described in this invention, a cutout is provided at the bottom of the bottom cover. The cutout at the bottom of the bottom cover is used to provide thermal management space for the module.

[0016] The beneficial effects of this invention are as follows: This invention provides a staggered battery module, including a plurality of individual batteries, a bottom cover, a top cover, and a plurality of connecting tubes. The plurality of individual batteries are arranged in a staggered manner. The bottom cover is placed on the bottom of the plurality of individual batteries, the top cover is placed on the top of the plurality of individual batteries, and the plurality of connecting tubes connect the bottom cover and the top cover. Compared with the prior art, this invention increases the force-bearing points of the module, balances the force, and can be made into a long module, thereby increasing the module assembly efficiency. Attached Figure Description

[0017] Fig. 1 This is a schematic diagram of the structure of the present invention.

[0018] Fig. 2 This is a schematic diagram of the bottom cover structure in this invention.

[0019] Fig. 3 This is a schematic diagram of the structure of the upper cover in this invention.

[0020] Wherein: 1-Single battery, 2-Bottom cover, 3-Top cover, 4-Connecting tube, 21-First groove, 22-First crossbeam, 23-First mounting hole, 24-First support plane, 25-Slit, 31-Second groove, 32-Second crossbeam, 33-Second mounting hole, 34-Locking groove, 35-Second support plane. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0022] like Figs. 1-3 As shown, a staggered battery module includes several individual batteries 1, a bottom cover 2, a top cover 3, and several connecting tubes 4. The individual batteries 1 are arranged in a staggered manner. The bottom cover 2 is placed on the bottom of the individual batteries 1, and the top cover 3 is placed on top of the individual batteries 1. The connecting tubes 4 connect the bottom cover 2 and the top cover 3. The bottom cover 2 and the top cover 3 are made of the same non-metallic material. The connecting tubes 4 are metal parts, preferably aluminum tubes, and an insulating layer can be applied to the surface of the metal connecting parts, such as by spraying insulating adhesive or applying an insulating film.

[0023] Furthermore, the bottom cover 2 is provided with a plurality of staggered first grooves 21, and a first crossbeam portion 22 is provided between two adjacent first grooves 21. In two adjacent first grooves 21, a first mounting hole 23 is provided on the left side of one first groove 21 and the right side of the other first groove 21. In the width direction of the first groove 21, a first support plane 24 is provided on its bottom edge.

[0024] Furthermore, the upper cover 3 is provided with a plurality of second grooves 31 that match the position, shape, and size of the first groove 21, and a second crossbeam portion 32 is provided between adjacent second grooves 31. In two adjacent second grooves 31, a second mounting hole 33 matching the first mounting hole 23 is provided on the left side of one second groove 31 and the right side of the other second groove 31. A locking groove 34 is provided on the top of the upper cover 3 at the position corresponding to the second mounting hole 33. A second support plane 35 is provided on the top edge of the second groove 31 in both the length and width directions.

[0025] Furthermore, one end of the connecting pipe 4 is inserted into the first mounting hole 23, and the other end of the connecting pipe 4 is inserted into the second mounting hole 33. Both the first mounting hole 23 and the second mounting hole 33 are stepped holes.

[0026] Furthermore, the bottom of the cover 2 is provided with a cutout 25.

[0027] The specific connection method of this invention is as follows: First, the bottom of the single battery cell 1 is placed into the first groove 21 of the bottom cover 2, and the bottom surface of the single battery cell is glued to the first supporting plane 24; then, the connecting tube 4 is inserted into the first mounting hole 23 in sequence, and then the top cover 3 is assembled along the connecting tube 4, and the upper part of the single battery cell 1 is attached to the second supporting plane 35 and glued together. The bottom cover 2, the single battery cell 1, and the top cover 3 are connected as one unit by glue. Among them, the connecting tube 4 connects the top cover 3 and the bottom cover 2, and it can be seen that the second mounting hole 33 of the top cover 3, the hollow cavity of the connecting tube 4, and the first mounting hole 23 of the bottom cover 2 are connected. When the module is placed in the box, the module can be locked to the box by passing bolts through these three.

[0028] Based on the disclosure and teachings of the foregoing specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments described above, and any obvious improvements, substitutions, or modifications made by those skilled in the art based on the present invention are within the scope of protection of the present invention. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the present invention.

Claims

1. A staggered battery module, characterized in that: The device includes several square battery cells, a bottom cover, a top cover, and several connecting tubes. The square battery cells are arranged in a staggered manner. The bottom cover is placed on the bottom of the square battery cells, and the top cover is placed on the top of the square battery cells. The connecting tubes connect the bottom cover and the top cover. The connecting tubes are made of metal and have an insulating layer on their surface. The bottom cover is provided with a plurality of staggered first grooves, and a first crossbeam is provided between two adjacent first grooves. The first crossbeam separates two adjacent first grooves, so that the battery cell is fixed in the first groove and does not move. In two adjacent first grooves, a first mounting hole is provided on the left side of one first groove and the right side of the other first groove. A first support plane is provided on the bottom edge of the first groove in the width direction. The top cover is provided with a plurality of second grooves that match the position, shape and size of the first groove. A second crossbeam is provided between two adjacent second grooves to separate the two adjacent second grooves, so that the battery cell is fixed in the second groove and does not move. In two adjacent second grooves, a second mounting hole matching the first mounting hole is provided on the left side of one second groove and the right side of the other second groove. The first mounting hole and the second mounting hole are distributed at intervals from left to right, so that the battery module has multiple force points and the force points are evenly distributed and balanced. A second support plane is provided on the top edge of the second groove in the length and width directions. The top of the upper cover has a locking groove at the position corresponding to the second mounting hole, which provides a position for the locking bolt. The second mounting hole of the upper cover, the hollow cavity of the connecting tube, and the first mounting hole of the bottom cover are connected. One end of the connecting tube is inserted into the first mounting hole, and the other end of the connecting tube is inserted into the second mounting hole. When the battery module is installed into the box, the locking bolt passes through the second mounting hole, the connecting tube, and the first mounting hole in sequence, thereby locking the battery module onto the box.

2. The staggered battery module according to claim 1, characterized in that: The bottom of the cover has a cut.

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