Arc shield for battery connection assembly

Abstract

The utility model relates to battery assembly technical field, concretely is electric arc isolation cover for battery connecting assembly, including battery group, the electric arc isolation cover is connected and is installed on the upper end of battery group, the electric arc isolation cover includes isolation cover cover body, install in a plurality of arc -extinguishing plate mechanism of isolation cover cover body inside and the connecting mechanism of fixed mounting in the lower end of the front and back two side walls of electric arc isolation cover, arc -extinguinguishing plate mechanism includes first arc -extinguishing plate, the second arc -extinguishing plate of fixed mounting in the lower end of first arc -extinguishing plate and the two third arc -extinguishing plates of fixed mounting in the lower surface front and back two sides of second arc -extinguishing plate. The utility model sets up electric arc isolation cover at the place of two batteries and connects each other, ensures the electric arc produced in the position of battery connection to guide elimination, prevents the further damage caused by electric arc, and electric arc isolation cover is fixedly connected in the outside of battery through friction, can conveniently dismantle, is convenient for the maintenance of battery group.

Description

Technical Field

[0001] This utility model relates to the field of battery component technology, specifically to an arc isolation cover for battery connection components. Background Technology

[0002] Battery packs have leads welded to the batteries for electrical connection of the corresponding batteries in parallel or series. The leads make electrical contact between the electrodes of the battery pack and external components. Whether it is an energy storage battery module or a power battery pack for new energy vehicles, the cells need to be connected in series or parallel through components such as connectors, busbars, and main electrode connectors.

[0003] Utility model patent with authorization announcement number CN218448174U discloses a battery connection assembly, a battery pack and its lead-out piece. The utility model includes a lead-out piece and a battery having a first electrode and a second electrode. The first electrode is located at one end of the battery and the second electrode is located at the other end of the battery. The lead-out piece includes a fixing part, an electrical contact part and a bending part. The electrical contact part is connected to the fixing part through the bending part. The bending part protrudes along the length direction of the battery and away from the battery. The lead-out piece is welded to the first electrode and / or the second electrode through the fixing part.

[0004] Although the aforementioned utility model can fix two batteries together by means of lead-out tabs, the connection point is highly susceptible to arcing due to high-voltage arcing or tip discharge during use, which is extremely dangerous. Therefore, we propose an arc-shielding cover for battery connection assemblies. Utility Model Content

[0005] This invention provides an arc shield for battery connection components to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An arc isolation cover for a battery connection assembly includes a battery pack, wherein the arc isolation cover is snapped onto the upper end of the battery pack, and the arc isolation cover includes an isolation cover body, a plurality of arc extinguishing plate mechanisms installed inside the isolation cover body, and a connecting mechanism fixedly installed on the lower ends of the front and rear side walls of the arc isolation cover. The arc-extinguishing plate mechanism includes a first arc-extinguishing plate, a second arc-extinguishing plate fixedly installed at the lower end of the first arc-extinguishing plate, and two third arc-extinguishing plates fixedly installed on the front and rear sides of the lower surface of the second arc-extinguishing plate.

[0007] As a preferred technical solution, the first arc-extinguishing plate is made of copper alloy, and the outer surface of the first arc-extinguishing plate is plated with an insulating layer.

[0008] This design utilizes the excellent thermal conductivity of copper alloys, which can quickly absorb the heat generated by the electric arc, reducing the local temperature and suppressing the continued combustion of the arc.

[0009] As a preferred technical solution, the second arc-extinguishing plate is made of FR-4 phenolic resin, and the third arc-extinguishing plate is made of alumina ceramic.

[0010] This design utilizes ceramic, which is resistant to high temperatures and has excellent insulation properties. As the bottom arc-extinguishing plate, it can directly resist the impact of electric arcs and quickly cool them.

[0011] As a preferred technical solution, a first support column is provided on both the front and rear sides of the right end inside the isolation cover, and a second support column is provided on both the front and rear sides of the left end inside the isolation cover.

[0012] This feature provides internal support for the arc-extinguishing plate mechanism and the enclosure, preventing the enclosure from deforming under pressure or the arc-extinguishing plate from shifting.

[0013] As a preferred technical solution, the first support column is longer than the second support column, and the lower ends of both the first and second support columns are wrapped with rubber sleeves.

[0014] This feature allows the rubber sleeve to cushion the contact pressure between the support post and the top of the battery pack, preventing scratches to the battery casing and enhancing contact stability.

[0015] As a preferred technical solution, the connecting mechanism includes a support plate and a rubber strip fixedly installed on the front surface of the support plate.

[0016] This feature provides structural support for the rubber strip via a support plate, ensuring the load-bearing capacity of the connection mechanism.

[0017] As a preferred technical solution, the rubber strip is tightly fitted to the outer surface of the battery pack, and both the first support column and the second support column are in contact with the top of the battery pack.

[0018] This design allows the rubber strips to fit tightly, securing the isolation cover to the battery pack laterally, while the support column contacts the top of the battery pack for longitudinal positioning.

[0019] As a preferred technical solution, the outer surface of the isolation cover is provided with anti-slip texture, and the isolation cover is made of flame-retardant ABS / PC alloy.

[0020] This feature utilizes the flame-retardant ABS / PC alloy, which combines flame retardancy, impact resistance, and insulation. It can prevent the spread of flames caused by electric arcs and protect the internal arc-extinguishing mechanism from external impacts.

[0021] Compared with the prior art, the beneficial effects of this utility model are: 1. By installing an arc isolation shield at the connection point of the two batteries, the arc generated at the battery connection point is guided and eliminated, preventing further damage caused by the arc.

[0022] 2. The arc shield is fixed to the outside of the battery by friction, which can be easily disassembled and facilitates battery pack maintenance. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the arc isolation cover in this utility model; Figure 3 This is a schematic diagram of the structure of the isolation cover body in this utility model; Figure 4 This is a schematic diagram of the arc-extinguishing plate mechanism in this utility model; Figure 5 This is a schematic diagram of the connecting mechanism in this utility model; The meanings of the labels in the diagram are as follows: 100. Battery pack; 200. Arc isolation cover; 210. Isolation cover body; 211. First support column; 212. Second support column; 220. Arc extinguishing plate mechanism; 221. First arc extinguishing plate; 222. Second arc extinguishing plate; 223. Third arc extinguishing plate; 230. Connecting mechanism; 231. Support plate; 232. Rubber strip. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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] Please see Figures 1-5 This embodiment provides a technical solution: An arc isolation cover for a battery connection assembly includes a battery pack 100, an arc isolation cover 200 is snapped onto the upper end of the battery pack 100, and the arc isolation cover 200 includes an isolation cover body 210, a plurality of arc extinguishing plate mechanisms 220 installed inside the isolation cover body 210, and a connecting mechanism 230 fixedly installed on the lower ends of the front and rear side walls of the arc isolation cover 200. The arc extinguishing plate mechanism 220 includes a first arc extinguishing plate 221, a second arc extinguishing plate 222 fixedly installed at the lower end of the first arc extinguishing plate 221, and two third arc extinguishing plates 223 fixedly installed on the front and rear sides of the lower surface of the second arc extinguishing plate 222. Through the above mechanism, an arc isolation cover 200 is covered on the outside of the battery connection assembly inside the battery pack 100, which can effectively prevent the arc generated by the battery connection assembly from causing further damage.

[0026] It should be added that the batteries inside the battery pack 100 are interconnected via a battery connection assembly.

[0027] Furthermore, such as Figure 4 As shown, the first arc-extinguishing plate 221 is made of copper alloy and has an insulating layer plated on its outer surface. The second arc-extinguishing plate 222 is made of FR-4 phenolic resin and the third arc-extinguishing plate 223 is made of alumina ceramic. The three-level material gradient combination achieves complementary functions of heat dissipation, support and high temperature resistance, thereby improving the arc-extinguishing efficiency.

[0028] In this embodiment, as Figure 3 As shown, a first support column 211 is provided on both the front and rear sides of the right end inside the isolation cover 210, and a second support column 212 is provided on both the front and rear sides of the left end inside the isolation cover 210. The first support column 211 is longer than the second support column 212. The lower ends of the first support column 211 and the second support column 212 are covered with rubber sleeves to protect the contact position between the support column and the battery.

[0029] In this embodiment, as Figure 5 As shown, the connecting mechanism 230 includes a support plate 231 and a rubber strip 232 fixedly installed on the front surface of the support plate 231. The rubber strip 232 is in close contact with the outer surface of the battery pack 100. The first support column 211 and the second support column 212 are in contact with the top of the battery pack 100. The rubber strip 232 fixes the arc isolation cover 200 to the outside of the battery pack 100 by friction.

[0030] In this embodiment, as Figure 2 As shown, the outer surface of the isolation shield 210 is provided with anti-slip texture. The isolation shield 210 is made of flame-retardant ABS / PC alloy, which increases the friction generated when the user grips the side surface of the arc isolation shield 200.

[0031] It is worth noting that the structure and working principle of the battery pack 100 involved in this embodiment are as known to those skilled in the art, and will not be described in detail here. The structure and working principle of the battery connection component involved in this embodiment are all technologies disclosed in the prior art, and will not be described in detail here.

[0032] In this embodiment, the arc isolation cover for the battery connection assembly is used by first holding the arc isolation cover 200 and inserting it into one side of the battery pack 100. The battery pack 100 on this side is equipped with the battery connection assembly. It is ensured that the first support column 211 and the second support column 212 are in contact with the top of the battery on this side of the battery pack 100. The connection mechanism 230 covers the upper side of the battery pack 100 with the arc isolation cover 200 through the friction generated by the contact between the rubber strip 232 and the side surface of the battery. When an arc occurs in the battery connection assembly, it first comes into contact with the third arc extinguishing plate 223 made of alumina ceramic. The third arc extinguishing plate 223 directly bears the high temperature and impact of the arc, and quickly cools the arc. Then the arc is transmitted along the second arc extinguishing plate 222 to the first arc extinguishing plate 221. The copper alloy plated with an insulating layer can effectively absorb and conduct heat, and the insulating layer prevents secondary conductivity, thus absorbing and mitigating the arc.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An arc shield for a battery connection assembly, comprising a battery pack (100), characterized in that: An arc isolation cover (200) is snapped onto the upper end of the battery pack (100). The arc isolation cover (200) includes an isolation cover body (210), a plurality of arc extinguishing plate mechanisms (220) installed inside the isolation cover body (210), and a connecting mechanism (230) fixedly installed on the lower ends of the front and rear side walls of the arc isolation cover (200). The arc extinguishing plate mechanism (220) includes a first arc extinguishing plate (221), a second arc extinguishing plate (222) fixedly installed at the lower end of the first arc extinguishing plate (221), and two third arc extinguishing plates (223) fixedly installed on the front and rear sides of the lower surface of the second arc extinguishing plate (222).

2. The arc shield for a battery connection assembly as described in claim 1, characterized in that: The first arc-extinguishing plate (221) is made of copper alloy, and the outer surface of the first arc-extinguishing plate (221) is plated with an insulating layer.

3. The arc shield for a battery connection assembly as described in claim 2, characterized in that: The second arc-extinguishing plate (222) is made of FR-4 phenolic resin, and the third arc-extinguishing plate (223) is made of alumina ceramic.

4. The arc shield for a battery connection assembly as described in claim 3, characterized in that: The isolation cover (210) has a first support column (211) on both the front and rear sides of the right end inside, and a second support column (212) on both the front and rear sides of the left end inside.

5. The arc shield for a battery connection assembly as described in claim 4, characterized in that: The first support column (211) is longer than the second support column (212), and the lower ends of both the first support column (211) and the second support column (212) are wrapped with rubber sleeves.

6. The arc shield for a battery connection assembly as described in claim 5, characterized in that: The connecting mechanism (230) includes a support plate (231) and a rubber strip (232) fixedly installed on the front surface of the support plate (231).

7. The arc shield for a battery connection assembly as described in claim 6, characterized in that: The rubber strip (232) is in close contact with the outer surface of the battery pack (100), and the first support column (211) and the second support column (212) are in contact with the top of the battery pack (100).

8. The arc shield for a battery connection assembly as described in claim 7, characterized in that: The outer surface of the isolation cover (210) is provided with anti-slip texture, and the isolation cover (210) is made of flame-retardant ABS / PC alloy.

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