Battery module suitable for battery with tabs on two sides

Abstract

The utility model relates to the technical field of battery modules, and provides a battery module suitable for a double-sided tab battery, which comprises a mounting box and a plurality of batteries, the mounting box is encircled to form a mounting space for mounting the batteries, one side surface of the mounting box is provided with an opening for the batteries to enter and exit from the mounting space, and the other side surface of the mounting box is provided with an opening for the batteries to enter and exit from the mounting space. The two side faces, adjacent to the opening and spaced in parallel, of the installation box are open, so that the positive electrode of the battery is connected with an external circuit from one opening, and the negative electrode of the battery is connected with the external circuit from the other opening. The utility model aims to provide a battery module capable of being matched with a battery with tabs on two sides.

Description

Technical Field

[0001] This utility model relates to the field of battery module technology, specifically to a battery module suitable for batteries with double-sided tabs. Background Technology

[0002] With the development of lithium battery technology, batteries have been continuously improved in terms of energy density, cycle life and safety, and are therefore widely used in electric vehicles, home energy storage systems and other high-power demand devices.

[0003] To further improve the energy density and discharge performance of batteries, dual-tab batteries have emerged in the market in recent years. This design allows the positive and negative electrodes to be led out from different sides, which helps to reduce the internal resistance of the battery, improve the uniformity of current distribution, and achieve higher energy transfer efficiency and heat dissipation performance.

[0004] Currently, traditional battery module designs are mostly based on single-sided tab batteries, with the positive and negative terminals leading out from the same side or a single side. This facilitates the use of centralized busbars and current distribution structures in the battery module, achieving structural compactness. However, with the introduction of double-sided tab batteries, the traditional single-sided tab module structure can hardly meet the installation and wiring requirements of double-sided tab batteries. Therefore, it is necessary to propose a battery module that can adapt to double-sided tab batteries. Utility Model Content

[0005] The main purpose of this utility model is to provide a battery module that can be adapted to batteries with two tabs on each side.

[0006] To achieve the above objectives, the present invention proposes a battery module suitable for batteries with double-sided tabs, comprising a mounting box, wherein the mounting box forms an installation space for mounting the battery, one side of the mounting box is open to allow the battery to enter and exit the installation space, and the two sides of the mounting box adjacent to and parallel to the opening are open, so that the positive terminal of the battery is connected to an external circuit from one of the openings, and the negative terminal of the battery is connected to an external circuit from the other opening.

[0007] Preferably, the mounting box includes a top plate, a bottom plate, and side plates. The top plate and the bottom plate are arranged parallel to each other and spaced apart. One side of the side plate is connected to the side of the top plate opposite to the opening. The opening is formed on the side of the mounting box parallel to the side plate, and the remaining two sides of the mounting box adjacent to the side plate form the vent.

[0008] Preferably, the battery module suitable for dual-sided tab batteries further includes multiple dual-sided tab batteries, each of which is arranged in parallel along the side plate toward the opening in the mounting space to form a battery assembly, and a buffer element is provided between every two adjacent batteries.

[0009] Preferably, a first insulating plate is provided between the battery assembly and the top plate, a second insulating plate is provided between the battery assembly and the bottom plate, and a third insulating plate is provided between the battery assembly and the side plate.

[0010] Preferably, the battery module suitable for dual-sided tab batteries further includes a sealing component for closing the opening, and a fourth insulating plate is provided between the sealing component and the battery assembly.

[0011] Preferably, the sealing component includes a sealing plate, which is arranged parallel to and spaced apart from the side plate. The top plate has a screw hole on the side facing the opening away from the opening, and the bottom plate has a screw hole on the side facing the opening away from the opening. The sealing plate has a plurality of first through holes through it along the thickness direction. The first through holes are used to cooperate with the screw holes of the top plate and the screw holes of the bottom plate to pass through bolts, thereby fixing the sealing plate to the opening.

[0012] Preferably, the enclosure further includes two fastening elements connected to the side of the enclosure plate opposite to the battery assembly, one of the fastening elements being disposed on the side of the enclosure plate facing the top plate and the other fastening element being disposed on the side of the enclosure plate facing the bottom plate. Each fastening element is provided with a second through hole, and the second through hole is provided in a one-to-one correspondence with the first through hole to allow bolts to pass through.

[0013] Preferably, the battery module suitable for dual-sided tab batteries further includes two covering elements, which are arranged one-to-one with the openings. The covering elements are used to be installed on the openings to cover the corresponding openings.

[0014] Preferably, the covering element has multiple through holes, the top plate is bent toward the bottom plate to form an upper connecting plate, the bottom plate is bent toward the top plate to form a lower connecting plate, and the upper connecting plate and the lower connecting plate are respectively formed with screw holes along the thickness direction, so as to cooperate with the through holes of the covering element to pass through bolts, thereby fixing the covering element to the mounting box.

[0015] Preferably, the top plate and the bottom plate are each formed with a plurality of heat dissipation grooves along the thickness direction.

[0016] In the technical solution of this utility model, by setting the mounting box, one side of the mounting box is open to allow the battery to enter and exit the mounting space, and the two sides of the mounting box adjacent to the opening are open respectively. The positive terminal of the battery with double-sided tabs is connected to the external circuit through one of the openings, and the negative terminal of the battery with double-sided tabs is connected to the external circuit through the other opening, thereby making it suitable for batteries with double-sided tabs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a battery module according to an embodiment of the present invention, applicable to batteries with double-sided tabs;

[0019] Figure 2 A schematic diagram of a battery module suitable for dual-sided tab batteries after removing the sealing plate and one of the covering elements;

[0020] Figure 3 for Figure 2 A schematic diagram after removing the fourth insulating plate and fastening components.

[0021] Explanation of icon numbers:

[0022] 1-Mounting box; 101-Top plate; 101a-Upper connecting plate; 102-Bottom plate; 102a-Lower connecting plate; 103-Side plate; 103a-Side connecting plate; 2-Battery; 3-Enclosure plate; 31-Wire hole; 32-Pull buckle; 4-Fastening element; 5-Covering element; 6-Insulating plate; 7-Heat dissipation channel; 8-Fourth insulating plate; 9-Opening; 10-Open opening; 11-Aluminum busbar.

[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0026] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0029] This invention proposes a battery module suitable for batteries with double-sided tabs.

[0030] Please refer to Figures 1 to 3 This battery module, suitable for batteries with dual-sided tabs, includes a mounting box 1. The mounting box 1 forms a mounting space for mounting batteries 2. One side of the mounting box 1 has an opening 9 for the battery 2 to enter and exit the mounting space. The two sides of the mounting box 1 adjacent to and parallel to the opening 9 have openings 10, allowing the positive terminal of the battery 2 to be connected to an external circuit through one opening 10, and the negative terminal of the battery 2 to be connected to an external circuit through the other opening 10. In this embodiment, the mounting box 1 is a metal structure, and the batteries 2 are connected in series or parallel via aluminum busbars 11. The openings 10 facilitate the installation of the aluminum busbars 11.

[0031] In the technical solution of this utility model, by setting the mounting box 1, one side of the mounting box 1 has an opening 9, which allows the battery 2 to enter and exit the mounting space. The two sides of the mounting box 1 adjacent to the opening 9 are respectively open 10. The positive terminal of the battery 2 with double-sided tabs is connected to the external circuit through one of the openings 10, and the negative terminal of the battery 2 with double-sided tabs is connected to the external circuit through the other opening 10, thereby making it suitable for batteries 2 with double-sided tabs.

[0032] Preferably, the mounting box 1 includes a top plate 101, a bottom plate 102, and side plates 103. The top plate 101 and the bottom plate 102 are arranged parallel to each other and spaced apart. One side of the side plate 103 is connected to the side of the top plate 101 opposite to the opening 9, and the other side of the side plate 103, spaced apart from each other, is connected to the side of the bottom plate 102 opposite to the opening 9. The side of the mounting box 1 parallel to the side plate 103 forms the opening 9, and the remaining two sides of the mounting box 1 adjacent to the side plate 103 form the opening 10. In this embodiment, the top plate 101, the bottom plate 102, and the side plates 103 are integrally formed. The top plate 101, the bottom plate 102, and the side plates 103 are all sheet metal structural parts. The remaining two sides are the two sides of the mounting box 1 in directions other than the top plate 101, the bottom plate 102, the side plates 103, and the opening 9.

[0033] Preferably, the battery module suitable for double-sided tab batteries further includes multiple double-sided tab batteries 2. Each battery 2 is arranged in parallel along the side plate 103 towards the opening 9 within the mounting space to form a battery assembly. A buffer element is provided between every two adjacent batteries 2. The buffer element effectively absorbs vibrations during use and transportation, providing cushioning protection to prevent damage from external forces and extending the battery's lifespan. In this embodiment, the buffer element is a sheet-like structure; more specifically, the buffer element is an EVA cotton structure.

[0034] Specifically, at least two batteries 2 are connected in parallel via the aluminum busbar 11 to form a battery pack, and multiple battery packs are connected in parallel to form the battery assembly. When the batteries 2 are connected in parallel via the aluminum busbar 11, the positive terminals of the batteries 2 in the same battery pack face the same opening 10 to be connected in parallel via the aluminum busbar 11, and the negative terminals of the batteries 2 in the same battery pack face the same opening 10 to be connected in parallel via the aluminum busbar 11. When the batteries 2 are connected in series via the aluminum busbar 11, the batteries 2 in the same battery pack are arranged alternately along the side plate 103 toward the opening 9, and the positive terminal of one battery 2 in the battery pack and the negative terminal of the adjacent battery 2 face the same opening 10 to be connected in series via the aluminum busbar 11.

[0035] Preferably, a first insulating plate is provided between the battery assembly and the top plate 101, a second insulating plate is provided between the battery assembly and the bottom plate 102, and a third insulating plate is provided between the battery assembly and the side plate 103. The first, second, and third insulating plates are provided to prevent short circuits or electrical contact between the battery 2 and the metal sheet metal. One side of the first insulating plate is used to adhere to the side of the top plate 101 facing the bottom plate 102, and the other side of the first insulating plate is used to adhere to the side of the battery assembly facing the top plate 101. One side of the second insulating plate is used to adhere to the side of the bottom plate 102 facing the top plate 101, and the other side of the second insulating plate is used to adhere to the side of the battery assembly facing the bottom plate 102.

[0036] Specifically, the side plate 103 is provided with an abutting element on the side facing the opening 9, one side of the third insulating plate is used to adhere to the side of the battery assembly facing the side plate 103, and the other side of the third insulating plate is used to adhere to the side of the abutting element away from the side plate 103.

[0037] Preferably, the battery module suitable for bi-sided tab batteries further includes a sealing component for closing the opening 9, and a fourth insulating plate is disposed between the sealing component and the battery assembly. The sealing component is provided to close the opening 9, preventing dust and other debris from entering the installation space through the opening 9.

[0038] Preferably, the sealing component includes a sealing plate 3, which is arranged parallel to and spaced apart from the side plate 103. The top plate 101 has a screw hole on its side facing the opening 9, away from the opening 9. The bottom plate 102 also has a screw hole on its side facing the opening 9, away from the opening 9. The sealing plate 3 has multiple first through holes extending along its thickness direction. These first through holes engage with the screw holes in the top plate 101 and the bottom plate 102 to allow bolts to pass through, thereby fixing the sealing plate 3 to the opening 9. In this embodiment, the sealing plate 3 has two pull tabs 32 on its side facing away from the battery assembly, allowing an operator to pull the sealing plate 3 and remove it from the opening 9. The sealing plate 3 also has two wire holes 31 for power cables to pass through.

[0039] Preferably, the sealing component further includes two fastening elements 4 connected to the side of the sealing plate 3 facing away from the battery assembly. One fastening element 4 is located on the side of the sealing plate 3 facing the top plate 101, and the other fastening element 4 is located on the side of the sealing plate 3 facing the bottom plate 102. Each fastening element 4 has a second through hole, which corresponds to the first through hole to allow bolts to pass through. In this embodiment, the fastening element 4 is a strip-shaped structure, with two fastening elements 4 arranged parallel and spaced apart. One end of each fastening element 4 faces one of the openings 10, and the other end extends towards the other opening 10. The fastening element 4 is integrally formed with the sealing plate 3.

[0040] Preferably, the battery module suitable for bifacial tab batteries further includes two covering elements 5, each corresponding to one of the openings 10. The covering elements 5 are installed on the openings 10 to cover the corresponding openings 10. In this embodiment, an insulating plate 6 is provided between the covering element 5 and the battery assembly, and the insulating plate 6 is spaced apart from the battery assembly. The covering element 5 is a plate-shaped structure, and the covering element 5 forms multiple heat dissipation grooves 7 along the thickness direction of the plate.

[0041] Specifically, the battery module suitable for bi-sided tab batteries further includes two parallel and spaced limiting strips. The limiting strips are connected to the side of the top plate 101 facing the bottom plate 102. The limiting strips are used to clamp the battery assembly on both sides facing the opening 10. The limiting strips are also used to abut against the side of the insulating plate 6 facing the battery assembly, so that the insulating plate 6 is spaced apart from the battery assembly.

[0042] Preferably, the covering element 5 has multiple through holes, the top plate 101 is bent toward the bottom plate 102 to form an upper connecting plate 101a, and the bottom plate 102 is bent toward the top plate 101 to form a lower connecting plate 102a. The upper connecting plate 101a and the lower connecting plate 102a each have screw holes along their thickness direction to mate with the through holes of the covering element 5 and allow bolts to pass through, thereby fixing the covering element 5 to the mounting box 1. Specifically, the side plate 103 is bent toward the opening 9 to form a side connecting plate 103a. One end of the upper connecting plate 101a and the lower connecting plate 102a facing the side connecting plate 103a has a chamfered transition structure, and both ends of the side connecting plate 103a have chamfered transition structures.

[0043] Preferably, the top plate 101 and the bottom plate 102 are each formed with a plurality of heat dissipation slots 7 extending through the plate thickness direction. The plurality of heat dissipation slots 7 are provided to dissipate the heat generated by the battery 2 from the mounting space.

[0044] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A battery module suitable for double-sided tab batteries, characterized in that, The device includes a mounting box that encloses a mounting space for mounting a battery. One side of the mounting box is open to allow the battery to enter and exit the mounting space. The two sides of the mounting box that are adjacent to and parallel to the opening are also open, so that the positive terminal of the battery is connected to an external circuit through one of the openings and the negative terminal of the battery is connected to an external circuit through the other opening.

2. The battery module suitable for a double-sided tab battery according to claim 1, characterized in that, The mounting box includes a top plate, a bottom plate, and side plates. The top plate and the bottom plate are arranged parallel to each other and spaced apart. One side of the side plate is connected to the side of the top plate opposite to the opening. The other side of the side plate, which is spaced apart from the top plate, is connected to the side of the bottom plate opposite to the opening. The side of the mounting box parallel to the side plate forms the opening, and the remaining two sides of the mounting box adjacent to the side plate form the vent.

3. The battery module suitable for double-sided tab batteries according to claim 2, characterized in that, It also includes multiple batteries with double-sided tabs, and each of the batteries is arranged in parallel along the side plate toward the opening in the installation space to form a battery assembly, with a buffer element provided between every two adjacent batteries.

4. The battery module suitable for double-sided tab batteries according to claim 3, characterized in that, A first insulating plate is provided between the battery assembly and the top plate, a second insulating plate is provided between the battery assembly and the bottom plate, and a third insulating plate is provided between the battery assembly and the side plate.

5. The battery module suitable for a double-sided tab battery according to claim 2, characterized in that, It also includes a sealing component for closing the opening, and a fourth insulating plate is disposed between the sealing component and the battery assembly.

6. The battery module suitable for a double-sided tab battery according to claim 5, characterized in that, The sealing component includes a sealing plate, which is arranged parallel to and spaced apart from the side plate. The top plate has a screw hole on the side facing the opening away from the opening, and the bottom plate has a screw hole on the side facing the opening away from the opening. The sealing plate has a plurality of first through holes through it along the thickness direction. The first through holes are used to cooperate with the screw holes of the top plate and the screw holes of the bottom plate to pass through bolts, thereby fixing the sealing plate to the opening.

7. The battery module suitable for a double-sided tab battery according to claim 6, characterized in that, The enclosure also includes two fastening elements connected to the side of the enclosure plate opposite to the battery assembly. One of the fastening elements is located on the side of the enclosure plate facing the top plate, and the other fastening element is located on the side of the enclosure plate facing the bottom plate. Each fastening element is provided with a second through hole, which corresponds to the first through hole to allow bolts to pass through.

8. The battery module suitable for a double-sided tab battery according to claim 2, characterized in that, It also includes two covering elements, which are provided one-to-one with the openings. The covering elements are used to be installed on the openings to cover the corresponding openings.

9. The battery module suitable for a double-sided tab battery according to claim 8, characterized in that, The covering element has multiple through holes. The top plate is bent toward the bottom plate to form an upper connecting plate, and the bottom plate is bent toward the top plate to form a lower connecting plate. The upper connecting plate and the lower connecting plate each have screw holes along the thickness direction, which are used to engage with the through holes of the covering element to allow bolts to pass through, thereby fixing the covering element to the mounting box.

10. The battery module suitable for a bifacial tab battery according to any one of claims 2-9, characterized in that, The top plate and the bottom plate are each formed with multiple heat dissipation slots along the thickness direction.

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