A bipolar horizontal battery with liquid and gas channeling prevention

Abstract

This invention discloses a bipolar horizontal battery for preventing liquid and gas leakage, comprising a casing and multiple electrode groups disposed within the casing. Each electrode group includes cross-stacked electrode plates and separators. The electrode plates have a crisscrossing mesh structure. The electrode groups are connected in series via an electrode connection assembly, and a separator is disposed between any two adjacent electrode groups. The electrode connection assembly includes a conductive plate, a conductive insert, and a slot disposed on the side wall of the separator. One end of the conductive plate is connected to an electrode plate, and the other end is connected to the conductive insert. The conductive insert is inserted into the slot, and a wire connected to the conductive insert is disposed within the slot. An electrode group fixing groove and a separator fixing groove are disposed at the bottom of the inner cavity of the casing, and a terminal block is disposed at the end of the inner cavity of the casing. The beneficial effects of this invention are: achieving a stable connection between the electrode groups and the casing while isolating the electro-hydraulic components within the electrode groups, effectively providing a good barrier effect.

Description

Technical Field

[0001] This invention relates to the field of battery technology, specifically to a bipolar horizontal battery that prevents liquid leakage and gas leakage. Background Technology

[0002] In today's society, batteries are widely used in various fields. Due to the different applications, there are various types of batteries. Among them, as a type of stacked battery, the horizontal battery can contain multiple battery cells, and is therefore usually used as a high-capacity battery. It can be used for starting automobiles, ships, construction machinery, airplanes, locomotives, etc., and can also be used in energy storage, backup power, forklifts, and various other fields.

[0003] The existing horizontal battery manufacturing process is as follows: the battery cells (a cluster of multiple individual battery cells formed by stacking and fixing bipolar plates, positive single plates, negative electrode plates, separators, etc.) and the battery casing (also called battery slot) are manufactured separately. The battery cells are then installed into the battery casing and assembled and fixed. A top cover is then installed on the top of the battery casing and the joint between the top cover and the battery casing is sealed. Finally, electrolyte is injected into the battery casing to form a complete battery.

[0004] However, horizontal batteries manufactured using the above process have at least the following drawbacks:

[0005] Achieving a tight seal between individual battery cells is challenging. Since the cells need to be connected in series, they must be linked by conductors (such as metal wires) or by welding, while simultaneously preventing electrolyte flow between the cells. Therefore, a special structure is typically designed to seal the cells and prevent electrolyte or gas leakage.

[0006] The mounting and fixing structure between the battery cell and the battery casing is quite complex, requiring a special structure to be designed for their mutual mating to ensure a secure fit and allow positive and negative terminals to be led from the battery cell to the outside of the battery casing. This mating structure design increases the overall manufacturing cost of the battery; furthermore, the additional steps required to assemble the battery cell and battery casing increase the complexity of the process and procedures. Summary of the Invention

[0007] The purpose of this invention is to provide a bipolar horizontal battery that prevents liquid and gas leakage, so as to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a bipolar horizontal battery for preventing liquid and gas leakage, comprising a casing and multiple electrode groups disposed within the casing. The electrode groups include cross-stacked electrode plates and separators. The electrode plates have a crisscrossing mesh structure. The electrode groups are connected in series sequentially via an electrode connection assembly, and a separator is disposed between any two adjacent electrode groups. The electrode connection assembly includes a conductive plate, a conductive insert plate, and a slot disposed on the side wall of the separator plate. One end of the conductive plate is connected to the electrode plate, and the other end is connected to the conductive insert plate. The conductive insert plate is inserted into the slot, and a wire connected to the conductive insert plate is disposed in the slot. An electrode group fixing groove and a separator plate fixing groove are disposed at the bottom of the inner cavity of the casing, and a terminal block is disposed at the end of the inner cavity of the casing.

[0009] Furthermore, the conductive plate and the electrode plate are connected layer by layer. One end of the conductive plate connected to the electrode plate is inserted between the upper and lower partitions. The conductive plate and the electrode plate are connected by welding to form an integral structure. Since the electrode plates and the partitions are stacked alternately, partitions are provided at the top and bottom of each layer of electrode plates. In this way, the upper and lower partitions clamp the conductive plate tightly to prevent it from falling off.

[0010] Furthermore, the slot is provided with a spring for fixing the conductive plug and a fixing plate. The fixing plate is provided with an inclined surface, which facilitates the insertion of the conductive plug into the slot and then fixes it by the spring. It is also easy to disassemble during disassembly.

[0011] Furthermore, the electrode group and the partition plate are respectively fixedly installed in the electrode group fixing groove and the partition plate fixing groove. The partition plate has a through hole corresponding to the electrode plate. The electrode plate and the partition plate are positioned and fixed by a limiting rod installed in the through hole. The limiting rod is installed in the electrode group fixing groove.

[0012] Furthermore, the edge of the electrode plate is provided with evenly distributed notches, and the conductive plate is fixed to the electrode plate through the notches.

[0013] Compared with the prior art, the beneficial effects of the present invention are: by using an integrally formed partition plate with a recessed fixing groove, the electrode connection assembly enables the sequential series connection between electrode groups while ensuring that there is no liquid or electricity leakage between the various electrode groups.

[0014] A secure connection between the electrode plate, terminal block, and partition plate is achieved by uniformly fixing the conductive insert plate onto the electrode plate. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the series connection structure of the pole group of the present invention;

[0017] Figure 2 This is a top view of the internal structure of the outer shell of the present invention;

[0018] Figure 3 This is a schematic diagram of the pole group structure of the present invention;

[0019] Figure 4 This is a schematic diagram of the connection structure of the electrode plate and electrode connection assembly of the present invention;

[0020] Figure 5 This is a schematic diagram of the electrode connection assembly.

[0021] In the diagram: 1. Housing; 2. Electrode group; 201. Electrode plate; 202. Separator; 3. Electrode connection assembly; 4. Separator plate; 5. Conductive plate; 6. Conductive insertion plate; 7. Slot; 8. Electrode group fixing slot; 9. Separator plate fixing slot; 10. Terminal block; 11. Spring; 12. Fixing plate. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figure 1-5In this embodiment of the invention, a bipolar horizontal battery for preventing liquid and gas leakage includes a casing 1 and multiple electrode groups 2 disposed within the casing 1. Each electrode group 2 includes cross-stacked electrode plates 201 and separators 202. Each electrode plate 201 includes a positive electrode plate and a negative electrode plate. The electrode group 2 composed of the positive electrode plate and separators 202 is called the positive electrode group, and the electrode group composed of the negative electrode plate and separators 202 is called the negative electrode group. The electrode plates 201 have a crisscrossing mesh structure. The electrode groups 2 are connected in series via electrode connection components 3, and a separator 4 is disposed between any two adjacent electrode groups 2. The electrode connection assembly 3 includes a conductive plate 5, a conductive insert plate 6, and a slot 7 disposed on the side wall of the partition plate 4. One end of the conductive plate 5 is connected to the electrode plate 201, and the other end is connected to the conductive insert plate 6. The conductive insert plate 6 is inserted into the slot 7, and a wire connected to the conductive insert plate 6 is disposed in the slot 7. The bottom of the inner cavity of the housing 1 is provided with an electrode group fixing groove 8 and a partition plate fixing groove 9. The end of the inner cavity of the housing 1 is provided with a terminal block 10. The terminal block 10 also includes the conductive plate 5 and the conductive insert plate 6. The terminal block also includes a positive terminal and a negative terminal disposed outside the housing 1.

[0024] It is worth noting that the conductive plate 5 is connected to the electrode plate 201 layer by layer, that is, each layer of electrode plate 201 is individually connected to the conductive plate 5. The end of the conductive plate 5 connected to the electrode plate 201 is inserted between the upper and lower partition plates 202. The conductive plate 5 and the electrode plate 201 are connected by welding to form an integral structure. Since the electrode plate 201 and the partition plate 202 are stacked alternately, a partition plate 202 is provided at the top and bottom of each layer of electrode plate 201. In this way, the upper and lower partition plates 202 clamp the conductive plate 5 to prevent it from falling off.

[0025] The slot 7 is equipped with a spring 11 for fixing the conductive plug 6 and a fixing plate 12. The fixing plate 12 has an inclined surface, which facilitates the insertion of the conductive plug 6 into the slot 7 and fixation by the spring 11. It is also easy to disassemble. The partition plate 4 fixes the conductive plug 6 by the spring 11. A connecting wire is provided inside the partition plate 4. In this way, the positive electrode group, the conductive plug 6, the partition plate 4 and the negative electrode group are connected in series.

[0026] It is worth noting that the electrode group 2 and the partition plate 4 are respectively fixedly installed in the electrode group fixing groove 8 and the partition plate fixing groove 9. The partition plate 202 has a through hole corresponding to the electrode plate 201. The electrode plate 201 and the partition plate 202 are positioned and fixed by the limiting rod 13 installed in the through hole. The limiting rod 13 is installed in the electrode group fixing groove 8. The partition plate fixing groove 9 is a concave groove. The partition plate fixing groove 9 and the partition plate 4 are interference connected. Since the partition plate 4 adopts an integral molding structure, it can effectively prevent the leakage of battery fluid between each electrode group 2.

[0027] like Figure 4 As shown, the edge of the electrode plate 201 is provided with evenly distributed notches, and the conductive plate 5 is fixed to the electrode plate 201 through the notches. The conductive plate 5 is arranged between the notches, which can increase the contact area between the conductive plate 5 and the mesh electrode plate 201, so that the conductive plate 5 can be more firmly fixed on the electrode plate 201.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A bipolar horizontal battery for preventing liquid and gas leakage, comprising a casing (1) and a plurality of electrode groups (2) disposed within the casing (1), characterized in that: The electrode group (2) includes electrode plates (201) and partition plates (202) arranged in a cross-stacked manner. The electrode plates (201) are a crisscrossing mesh structure. The electrode groups (2) are connected in series by an electrode connection assembly (3). A partition plate (4) is provided between any two adjacent electrode groups (2). The electrode connection assembly (3) includes a conductive plate (5), a conductive insert plate (6), and a slot (7) provided on the side wall of the partition plate (4). One end of the conductive plate (5) is connected to the electrode plate (201), and the other end is connected to the conductive insert plate (6). The conductive insert plate (6) is inserted into the slot (7). A wire connected to the conductive insert plate (6) is provided in the slot (7). The bottom of the inner cavity of the housing (1) is provided with an electrode group fixing groove (8) and a partition plate fixing groove (9). The end of the inner cavity of the housing (1) is provided with a terminal block (10).

2. The bipolar horizontal battery for preventing liquid and gas leakage according to claim 1, characterized in that: The conductive plate (5) is connected to the electrode plate (201) layer by layer, and one end of the conductive plate (5) connected to the electrode plate (201) is inserted between the upper and lower partition plates (202).

3. A bipolar horizontal battery for preventing liquid and gas leakage according to claim 1, characterized in that: The slot (7) is provided with a spring (11) for fixing the conductive insert (6) and a fixing plate (12), and the fixing plate (12) is provided with an inclined surface.

4. A bipolar horizontal battery for preventing liquid and gas leakage according to claim 1, characterized in that: The pole group (2) and the partition plate (4) are respectively fixed in the pole group fixing groove (8) and the partition plate fixing groove (9). The partition plate (202) has a through hole corresponding to the pole plate (201). The pole plate (201) and the partition plate (202) are positioned and fixed by a limiting rod (13) set in the through hole. The limiting rod (13) is set in the pole group fixing groove (8).

5. A bipolar horizontal battery for preventing liquid and gas leakage according to claim 1, characterized in that: The edge of the electrode plate (201) is provided with evenly distributed notches, and the conductive plate (5) is fixed to the electrode plate (201) through the notches.

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