Waterproof terminal post for lithium battery

Abstract

The utility model relates to the field of lithium battery terminal post, specifically is a kind of lithium battery waterproof terminal post, including battery shell, the top of battery shell is fixedly installed with cover plate;The utility model is through setting up waterproof mechanism, connecting wire is fixed on the surface of lithium battery terminal post by bolt, the waterproof cover is moved by spring, the surface protection of lithium battery terminal post is formed to waterproof cover, after waterproof cover is in position, by holding waterproof plate and moving, the surface of positioning rod is inserted into the inside of positioning plate by positioning rod and moving driven by waterproof plate, waterproof cover and waterproof plate form closed, the surface protection of lithium battery terminal post can be formed, the problem that sealing ring on the surface of terminal post is easily caused material hardening, embrittlement or shrinkage because of overheating, loses elastic sealing ability, and further reduces the waterproof sealing effect of terminal post is solved when temperature is prone to rising in long time use of lithium battery.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery terminals, specifically a waterproof lithium battery terminal. Background Technology

[0002] Lithium-ion batteries are a type of battery that uses lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. Due to their advantages such as high energy density, long lifespan, and low self-discharge rate, they are widely used in consumer electronics, electric vehicles, energy storage systems, and other fields.

[0003] When lithium batteries are in use, they need to be connected to an external circuit via terminals. Their function is to safely and efficiently transmit the electrical energy inside the battery to the electrical device, while ensuring that the current can flow back into the battery during charging.

[0004] However, existing terminals rely solely on sealing rings for waterproofing. When lithium batteries are used for extended periods, the temperature can easily rise. At this time, the sealing rings on the terminal surface may harden, become brittle, or shrink due to overheating, losing their elastic sealing ability and thus reducing the waterproofing effect on the terminal. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, the terminal block relies solely on the sealing ring for waterproof sealing. However, when lithium batteries are used for extended periods, the temperature can easily rise. At this time, the sealing ring on the surface of the terminal block may harden, become brittle, or shrink due to overheating, losing its elastic sealing ability and thus reducing the waterproof sealing effect of the terminal block. This utility model proposes a waterproof terminal block for lithium batteries.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a lithium battery waterproof terminal block, including a battery shell, a cover plate fixedly installed on the top of the battery shell, handles installed on both sides of the top of the cover plate, a lithium battery terminal block fixedly installed on the right side of the battery shell, and a waterproof mechanism installed on the right side of the battery shell.

[0007] The waterproof mechanism includes a fixing plate, the left side of which is fixedly connected to the right side of the battery casing. Springs are fixedly connected to both the front and back sides of the fixing plate. A waterproof cover is fixedly connected to one end of each spring. The left side of the waterproof cover is slidably connected to the right side of the battery casing. The inner cavity of the waterproof cover is fitted onto the surface of the lithium battery terminal. A sealing gasket made of polyurethane is fixedly connected to the inner cavity of the waterproof cover.

[0008] Preferably, guide rods are fixedly connected to both the front and back sides of the fixing plate, and the surface of the guide rods is slidably connected to the inner cavity of the waterproof cover.

[0009] Preferably, one end of the guide rod is fixedly connected to a positioning plate, one side of the positioning plate is in contact with the surface of the waterproof cover, and the left side of the positioning plate is fixedly connected to the right side of the battery casing.

[0010] Preferably, the fixing plate has fixing slots on both the front and back sides, and the inner cavity of the fixing slot is fitted with an elastic block. One side of the elastic block is fixedly connected to the surface of the waterproof cover, and the elastic block is made of nylon.

[0011] Preferably, a waterproof plate is slidably connected to one side of the waterproof cover, and a positioning groove is provided on the left side of the waterproof plate, with the left side of the waterproof plate fitting against the right side of the battery casing.

[0012] Preferably, a positioning rod is fixedly connected to the left side of the waterproof membrane, the surface of the positioning rod is inserted into the inner cavity of the positioning plate, and the positioning rod is made of silicone rubber.

[0013] Preferably, a protective pad made of silicone is fixedly connected to the inner cavity of the positioning groove.

[0014] The advantages of this utility model are:

[0015] This invention employs a waterproof mechanism. The connecting wire is bolted to the surface of the lithium battery terminal. A spring moves the waterproof cover, protecting the terminal surface. Once in place, the waterproof plate is moved, causing a positioning rod to move and insert into the plate, creating a seal. This effectively protects the terminal surface. This design solves the problem that relying solely on a sealing ring for waterproofing is ineffective when the lithium battery temperature rises during prolonged use. Overheating can cause the sealing ring to harden, become brittle, or shrink, losing its elasticity and sealing ability, thus reducing the waterproof seal. Attached Figure Description

[0016] 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 these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the battery casing of this utility model;

[0019] Figure 3This is a schematic diagram of the structure of the waterproof cover of this utility model;

[0020] Figure 4 This is a structural schematic diagram of the waterproof membrane of this utility model.

[0021] In the diagram: 1. Battery casing; 2. Waterproof mechanism; 201. Waterproof cover; 202. Fixing plate; 203. Waterproof plate; 204. Guide rod; 205. Fixing slot; 206. Positioning plate; 207. Sealing gasket; 208. Spring; 209. Elastic block; 210. Protective pad; 211. Positioning rod; 212. Positioning groove; 3. Cover plate; 4. Handle; 5. Lithium battery terminal. Detailed Implementation

[0022] 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 scope of protection of the present utility model.

[0023] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0024] This application discloses a waterproof terminal for lithium batteries. (See also...) Figure 1 , Figure 2 and Figure 3 A waterproof terminal block for a lithium battery includes a battery casing 1, a cover plate 3 fixedly installed on the top of the battery casing 1, handles 4 installed on both sides of the top of the cover plate 3, a lithium battery terminal block 5 fixedly installed on the right side of the battery casing 1, and a waterproof mechanism 2 installed on the right side of the battery casing 1.

[0025] The waterproof mechanism 2 includes a fixing plate 202, the left side of which is fixedly connected to the right side of the battery casing 1. Springs 208 are fixedly connected to both the front and back sides of the fixing plate 202. There are four springs 208, arranged in pairs. A waterproof cover 201 is fixedly connected to one end of each spring 208. The left side of the waterproof cover 201 is slidably connected to the right side of the battery casing 1. The inner cavity of the waterproof cover 201 is fitted onto the surface of the lithium battery terminal 5. A sealing gasket 207 is fixedly connected to the inner cavity of the waterproof cover 201. The sealing gasket 207 is made of polyurethane and has a closed-cell structure with relatively small pores. The components are independent and not connected, making it difficult for water to penetrate, thus forming a natural waterproof barrier to improve the waterproof effect inside the waterproof cover 201. Before installing the connecting wire, the waterproof cover 201 is first moved by pushing it to remove the protection on the surface of the lithium battery terminal 5. Then, the connecting wire is fixed to the surface of the lithium battery terminal 5 with bolts. After the connecting wire is fixed, the waterproof cover 201 is loosened. When the waterproof cover 201 is not under force, the spring 208 restores its deformation and moves the waterproof cover 201, so that the waterproof cover 201 can re-protect the surface of the lithium battery terminal 5, thereby improving the waterproof performance of the lithium battery terminal 5.

[0026] Reference Figure 1 , Figure 2 and Figure 3 Guide rods 204 are fixedly connected to both the front and back sides of the fixing plate 202. The number of guide rods 204 is the same as that of springs 208. The surface of the guide rod 204 moves within the inner cavity of the spring 208. The surface of the guide rod 204 is slidably connected to the inner cavity of the waterproof cover 201. The guide rods 204 guide the movement of the waterproof cover 201, keeping it moving horizontally and preventing the waterproof cover 201 from shifting its position during movement. This improves the stability of the waterproof cover 201 during movement and ensures that the waterproof cover 201 can stably protect the surface of the lithium battery terminal 5.

[0027] Reference Figure 1 , Figure 2 and Figure 3 One end of the guide rod 204 is fixedly connected to a positioning plate 206. One side of the positioning plate 206 is in contact with the surface of the waterproof cover 201, and the left side of the positioning plate 206 is fixedly connected to the right side of the battery casing 1. The positioning plate 206 supports one end of the guide rod 204 to ensure the stable use of the guide rod 204. At the same time, the positioning plate 206 limits the movement of the waterproof cover 201 to prevent the waterproof cover 201 from moving too far, which could cause the inner wall of the waterproof cover 201 to collide with the surface of the lithium battery terminal 5 and affect the normal use of the lithium battery terminal 5.

[0028] Reference Figure 3The fixing plate 202 has fixing slots 205 on both the front and back sides. An elastic block 209 is engaged within the inner cavity of the fixing slot 205. One side of the elastic block 209 is fixedly connected to the surface of the waterproof cover 201. The elastic block 209 is made of nylon. Due to its high strength, high toughness, and rapid rebound properties, the elastic block 209 has a longer service life and can quickly return to its original shape after deformation, ensuring stable clamping force even after long-term use. The fixing slots 205 allow the surface of the elastic block 209 to engage with the interior of the fixing plate 202, thus fixing the position of the waterproof cover 201. This allows the waterproof cover 201 to fit snugly against the surface of the fixing plate 202 when not in use, avoiding the need for operators to push the waterproof cover 201 for extended periods and improving the installation efficiency of the lithium battery terminal 5 and external connection cable.

[0029] Reference Figure 1 , Figure 2 and Figure 3 A waterproof plate 203 is slidably connected to one side of the waterproof cover 201. A positioning groove 212 is provided on the left side of the waterproof plate 203. The left side of the waterproof plate 203 is attached to the right side of the battery casing 1. The waterproof plate 203 seals the inside of the waterproof cover 201, reduces the contact area between the lithium battery terminal 5 and the outside, and further improves the waterproof effect of the lithium battery terminal 5.

[0030] Reference Figure 3 and Figure 4 A positioning rod 211 is fixedly connected to the left side of the waterproof membrane 203. The surface of the positioning rod 211 is inserted into the inner cavity of the positioning plate 206. The positioning rod 211 is made of silicone rubber. The silicone rubber positioning rod 211 has the characteristics of high elastic damping, good low-temperature flexibility, and strong chemical stability. It can improve the damping effect of the positioning rod 211 and ensure its stable use in high-temperature environments. After the surface of the positioning rod 211 is inserted into the interior of the positioning plate 206, the position of the waterproof membrane 203 can be fixed, preventing the waterproof membrane 203 from detaching from the interior of the positioning plate 206 during use and ensuring the stability of the waterproof membrane 203 during use.

[0031] Reference Figure 4 A protective pad 210 is fixedly connected to the inner cavity of the positioning groove 212. The protective pad 210 is made of silicone. The silicone protective pad 210 has sealing properties and contact flexibility, reducing friction. The protective pad 210 protects the connecting wires installed on the surface of the lithium battery terminal 5, preventing the connecting wires from being worn due to long-term contact with the inner wall of the positioning groove 212, which would affect the normal use of the lithium battery terminal 5.

[0032] Working principle: Before installing the connecting wire, the waterproof cover 201 is first moved to remove the protection on the surface of the lithium battery terminal 5. During the movement of the waterproof cover 201, the elastic locking block 209 moves synchronously. When the surface of the waterproof cover 201 is pressed against one side of the fixing plate 202, the surface of the elastic locking block 209 engages with the inside of the fixing slot 205, thus fixing the position of the waterproof cover 201. This eliminates the need for the operator to push the waterproof cover 201 for an extended period. Afterward, the connecting wire is fixed to the surface of the lithium battery terminal 5 with bolts. After the connecting wire is fixed, the waterproof cover 201 is pulled. When the waterproof cover 201 is under force, the surface of the elastic locking block 209 is compressed. When deformation occurs, the elastic locking block 209 can be disengaged from the fixed slot 205 during the movement of the waterproof cover 201, thus releasing the position fixation of the waterproof cover 201. Then, the spring 208 restores the deformation and moves the waterproof cover 201, allowing the waterproof cover 201 to re-protect the surface of the lithium battery terminal 5. After the waterproof cover 201 is in place, the waterproof plate 203 is moved by gripping it. The movement of the waterproof plate 203 moves the positioning rod 211, inserting the surface of the positioning rod 211 into the interior of the positioning plate 206, so that the waterproof cover 201 and the waterproof plate 203 form a seal, which can protect the surface of the lithium battery terminal 5 and improve the waterproof performance of the lithium battery terminal 5.

[0033] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.

[0034] 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 illustrative of the principles of this 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.

Claims

1. A waterproof terminal block for a lithium battery, comprising a battery casing (1), characterized in that: A cover plate (3) is fixedly installed on the top of the battery casing (1). A handle (4) is installed on both sides of the top of the cover plate (3). A lithium battery terminal (5) is fixedly installed on the right side of the battery casing (1). A waterproof mechanism (2) is installed on the right side of the battery casing (1). The waterproof mechanism (2) includes a fixing plate (202), the left side of which is fixedly connected to the right side of the battery casing (1), and springs (208) are fixedly connected to the front and back sides of the fixing plate (202). A waterproof cover (201) is fixedly connected to one end of the spring (208). The left side of the waterproof cover (201) is slidably connected to the right side of the battery casing (1). The inner cavity of the waterproof cover (201) is fitted onto the surface of the lithium battery terminal (5). A sealing gasket (207) is fixedly connected to the inner cavity of the waterproof cover (201). The sealing gasket (207) is made of polyurethane.

2. The waterproof terminal block for a lithium battery according to claim 1, characterized in that: Guide rods (204) are fixedly connected to both the front and back sides of the fixing plate (202), and the surface of the guide rods (204) is slidably connected to the inner cavity of the waterproof cover (201).

3. A waterproof terminal block for lithium batteries according to claim 2, characterized in that: One end of the guide rod (204) is fixedly connected to a positioning plate (206). One side of the positioning plate (206) is in contact with the surface of the waterproof cover (201), and the left side of the positioning plate (206) is fixedly connected to the right side of the battery casing (1).

4. A waterproof terminal block for lithium batteries according to claim 1, characterized in that: The fixing plate (202) has fixing slots (205) on both the front and back sides. An elastic block (209) is engaged in the inner cavity of the fixing slot (205). One side of the elastic block (209) is fixedly connected to the surface of the waterproof cover (201). The elastic block (209) is made of nylon.

5. A waterproof terminal block for a lithium battery according to claim 1, characterized in that: A waterproof plate (203) is slidably connected to one side of the waterproof cover (201). A positioning groove (212) is provided on the left side of the waterproof plate (203). The left side of the waterproof plate (203) is attached to the right side of the battery casing (1).

6. A waterproof terminal block for a lithium battery according to claim 5, characterized in that: A positioning rod (211) is fixedly connected to the left side of the waterproof membrane (203). The surface of the positioning rod (211) is inserted into the inner cavity of the positioning plate (206). The positioning rod (211) is made of silicone rubber.

7. A waterproof terminal block for a lithium battery according to claim 5, characterized in that: The inner cavity of the positioning groove (212) is fixedly connected to a protective pad (210), which is made of silicone.

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