Assembling structure of lithium battery

Abstract

The utility model relates to the technical field of lithium battery assembly, in particular to an assembly structure of a lithium battery, which comprises a protective shell. When the assembly structure of the lithium battery is used, a heat dissipation groove is formed in the surface of the protective shell, a heat dissipation sheet is mounted in the protective shell, one side of the heat dissipation sheet is attached to the surface of a placement frame to dissipate heat of a mounting groove in the placement frame, and the placement frame is mounted at the top of a damping plate; the heat generated by the lithium battery in the mounting groove can be transferred out through the cooling fins, so that a proper temperature range is kept in the mounting groove, and a heat dissipation channel is provided for the protective shell in the process that the placement frame dissipates heat through the cooling fins; and heat generated by the lithium battery in the placement frame is effectively transferred to the external environment, a dustproof net is installed in a heat dissipation groove, dust and small particles can be effectively prevented from entering the protection shell to damage the lithium battery in the placement frame, and therefore the heat dissipation effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery assembly, in particular to an assembly structure of a lithium battery. Background Art

[0002] The background technology of lithium battery assembly structure mainly focuses on the design and manufacturing process of batteries, aiming to improve energy density, cycle life, safety and cost efficiency. This structure usually involves combining positive electrode materials, negative electrode materials, separators and electrolytes in a specific way to form single cells. Single cells are then combined into battery packs in series and parallel to meet the voltage and capacity requirements of different applications.

[0003] The utility model disclosed in the Chinese utility model patent application disclosure CN205882078U discloses an assembly structure of a lithium battery, including a plurality of plate-shaped lithium battery cells arranged and fixed together in sequence, the same side of the plurality of plate-shaped lithium battery cells is respectively provided with a positive battery pole ear and a negative battery pole ear, and the positions of the positive battery pole ear and the negative battery pole ear on two adjacent plate-shaped lithium battery cells are opposite, the plurality of plate-shaped lithium battery cells are sequentially connected in series through a plurality of electrical connectors, and a pole ear spacing space is provided between the remaining two non-connected battery pole ears between two adjacent plate-shaped lithium battery cells, and the assembly structure also includes an insulating shielding plate arranged at the upper ends of the plurality of positive battery pole ears and negative battery pole ears, and the insulating shielding plate is provided with a plurality of baffles corresponding to the positions of the pole ear spacing spaces for inserting into the pole ear spacing spaces. The structure of this case is simple and easy to implement, easy to assemble, and has good practicality.

[0004] However, the device lacks the function of heat dissipation. When in use, the heat generated by the battery during the charging and discharging process may not be effectively dissipated, thereby causing the internal temperature of the battery to rise, which may lead to a decline in battery performance, because high temperature will affect the chemical stability of the electrolyte and the reaction kinetics of the electrode material. Moreover, overheating may trigger a thermal runaway reaction inside the battery, causing the battery to swell, leak, or even catch fire or explode, resulting in the battery being unable to dissipate heat. Not only that, the device also lacks an explosion-proof function. When in use, if the internal pressure of the battery is too high, an explosion may occur without an explosion-proof function, causing damage to the equipment and the human body. Moreover, when the internal pressure of the battery increases, the battery performance may decline, the capacity may be reduced, and the battery life may be shortened, resulting in a battery explosion. Summary of the invention

[0005] The purpose of the utility model is to provide an assembly structure of a lithium battery to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A lithium battery assembly structure comprises a protective shell, a protective cover is clamped on the top of the protective shell, an explosion-proof disk is fixedly connected to the bottom of the protective shell, a safety valve is fixedly connected to the outer surface of the protective shell, a placement frame is clamped inside the protective shell, a pressure relief groove is provided at the bottom of the placement frame, a heat sink is fixedly connected to the inner surface of the protective shell, and a heat dissipation groove is provided on one side of the protective shell.

[0008] Preferably, a handle is fixedly connected to the upper surface of the protective shell, fixing holes are opened on both sides of the protective shell, and fixing threads are threadedly connected inside the fixing holes.

[0009] Preferably, a partition is fixedly connected inside the placement frame, and a mounting groove is provided inside the placement frame.

[0010] Preferably, a dustproof net is fixedly connected inside the heat dissipation slot, and a sealant is fixedly connected to one side of the dustproof net.

[0011] Preferably, a fixing groove is fixedly connected to the bottom of the installation groove, and a pole ear is fixedly connected inside the fixing groove.

[0012] Preferably, a shock-absorbing plate is fixedly connected to the bottom of the protective shell, and a placement frame is fixedly connected to the top of the shock-absorbing plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The assembly structure of a lithium battery has a heat dissipation groove on the surface of a protective shell when in use, a heat sink is installed inside the protective shell, one side of the heat sink is attached to the surface of a placement frame to dissipate heat from the installation slot inside the placement frame, and the placement frame is installed on the top of a shock-absorbing plate, and the heat generated by the lithium battery in the installation slot can be transferred out through the heat sink, so that the installation slot is kept in a suitable temperature range, and in the process of heat dissipation by the placement frame through the heat sink, a heat dissipation channel is provided for the protective shell, so that the heat generated by the lithium battery in the placement frame is effectively transferred to the external environment, and a dustproof net is installed inside the heat dissipation groove, which can effectively prevent dust and tiny particles from entering the interior of the protective shell to damage the lithium battery in the placement frame, thereby achieving a heat dissipation effect.

[0015] The assembly structure of a lithium battery has an explosion-proof plate connected to the bottom of a protective cover installed on the top of a protective shell when in use. When the internal pressure of a lithium battery in a placement frame inside the protective shell increases abnormally, the explosion-proof plate will automatically rupture under the maximum pressure to release internal gas and heat to reduce the pressure of the protective shell and prevent the protective shell from rupturing due to excessive pressure. A safety valve is installed on the surface of the protective shell. When the pressure of a lithium battery installed in a mounting groove is too high, the safety valve will automatically open and release excess gas along the pressure relief groove opened at the bottom of the placement frame to prevent the internal pressure of the protective shell from being too high and causing an explosion, thereby achieving an explosion-proof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the protective shell of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the installation slot of the utility model;

[0019] Figure 4 It is a schematic diagram of the protective cover structure of the utility model.

[0020] In the figure: 1. Protective shell; 2. Protective cover; 3. Explosion-proof disk; 4. Safety valve; 5. Placement frame; 6. Pressure relief groove; 7. Heat sink; 8. Heat sink; 9. Handle; 10. Fixing hole; 11. Fixing thread; 12. Partition; 13. Installation groove; 14. Dustproof net; 15. Sealant; 16. Fixing groove; 17. Ear; 18. Shock-absorbing plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 4 As shown, a technical solution provided by the utility model:

[0023] A lithium battery assembly structure includes a protective shell 1, a protective cover 2 is clamped on the top of the protective shell 1, an explosion-proof plate 3 is fixedly connected to the bottom of the protective shell 1, a safety valve 4 is fixedly connected to the outer surface of the protective shell 1, a placement frame 5 is clamped inside the protective shell 1, a pressure relief groove 6 is provided at the bottom of the placement frame 5, a heat sink 7 is fixedly connected to the inner surface of the protective shell 1, and a heat dissipation groove 8 is provided on one side of the protective shell 1. The protective shell 1 is used to protect the internal structure from physical damage from the outside. The protective cover 2 is installed on the top of the protective shell 1 to protect the environmental seal inside the protective shell 1 and prevent external moisture and impurities from entering the battery. The explosion-proof plate 3 is connected to the bottom of the protective cover 2, and when the internal pressure of the lithium battery in the placement frame 5 inside the protective shell 1 increases abnormally, the explosion-proof plate 3 will automatically rupture at the maximum pressure to release the internal gas And heat, to reduce the pressure of the protective shell 1 to prevent the protective shell 1 from bursting due to excessive pressure. A safety valve 4 is installed on the surface of the protective shell 1. When the pressure of the lithium battery in the installation groove 13 is too high, the safety valve 4 will automatically open and release excess gas along the pressure relief groove 6 opened at the bottom of the placement frame 5. The inside of the protective shell 1 is connected to a prevention frame for installing the lithium battery inside for fixed assembly. A pressure relief groove 6 is opened at the bottom of the placement frame 5 for exhausting when the pressure of the lithium battery is too high. A heat sink 7 is installed on the inner surface of the protective shell 1, which can transfer the heat generated by the lithium battery in the installation groove 13 to keep the installation groove 13 in a suitable temperature range. Heat dissipation grooves 8 are opened on both sides of the protective shell 1 to dissipate the heat inside the protective shell 1, which has achieved the purpose of assembling lithium batteries.

[0024] In this embodiment, preferably, a handle 9 is fixedly connected to the upper surface of the protective shell 1, fixing holes 10 are provided on both sides of the protective shell 1, and fixing threads 11 are connected to the fixing holes 10. When in use, the handle 9 is connected to the top of the protective shell 1, and the protective shell 1 can be lifted and moved by the handle 9, or the protective cover 2 can be opened by the handle 9. Fixing holes 10 are provided on both sides of the protective shell 1, and the protective shell 1 and the protective cover 2 can be fixed together by the fixing threads 11. After the fixing threads 11 are inserted into the fixing holes 10 provided on the protective cover 2 and tightened, the two are connected and fixed together, and the function of fixing the protective cover 2 has been achieved;

[0025] In this embodiment, preferably, a partition 12 is fixedly connected inside the placement frame 5, and a mounting groove 13 is opened inside the placement frame 5. When in use, the partition 12 is connected inside the placement frame 5 to separate the lithium batteries in the mounting groove 13, ensuring that each monomer works independently without affecting each other, and provides support for the lithium batteries, and also helps to disperse the heat between the batteries, reducing the risk of local overheating. The mounting groove 13 is connected inside the placement frame 5 to install and fix the battery in the placement frame 5, which has achieved the effect of isolating the battery;

[0026] In this embodiment, preferably, a dustproof net 14 is fixedly connected inside the heat dissipation slot 8, and a sealant 15 is fixedly connected to one side of the dustproof net 14. When in use, the dustproof net 14 is connected inside the heat dissipation slot 8 to prevent external dust and impurities from entering the protective shell 1 to damage the battery placed in the frame 5. The sealant 15 is connected to one side of the dustproof net 14 to ensure that the dustproof net 14 forms a tight seal with the heat dissipation slot 8 to prevent dust from entering the protective shell 1 through the edge of the dustproof net 14, thereby achieving a dustproof effect;

[0027] In this embodiment, preferably, a fixing groove 16 is fixedly connected to the bottom of the mounting groove 13, and a pole ear 17 is fixedly connected inside the fixing groove 16. When in use, the fixing groove 16 is connected to the bottom of the mounting groove 13 for mounting the battery in the fixing groove 16 for assembly, and the pole ear 17 is connected inside the fixing groove 16 for connecting the positive and negative electrodes of the battery and conducting the current from the inside of the battery to the external circuit, thereby achieving the function of connecting the positive and negative electrodes of the battery;

[0028] In this embodiment, preferably, a shock-absorbing plate 18 is fixedly connected to the bottom of the protective shell 1, and a placement frame 5 is fixedly connected to the top of the shock-absorbing plate 18. When in use, the shock-absorbing plate 18 is installed at the bottom of the protective shell 1 to absorb and mitigate the impact of external shocks and vibrations on the battery and protect the internal structure of the battery from damage. The placement frame 5 is connected to the top of the shock-absorbing plate 18 to achieve the shock-absorbing effect.

[0029] When a lithium battery assembly structure of the present embodiment is in use, a heat dissipation groove 8 is opened on the surface of the protective shell 1, and a heat sink 7 is installed inside the protective shell 1. One side of the heat sink 7 is attached to the surface of the placement frame 5 to dissipate heat from the mounting groove 13 inside the placement frame 5. The placement frame 5 is installed on the top of the shock-absorbing plate 18. The heat generated by the lithium battery in the mounting groove 13 can be transferred out through the heat sink 7, so that the installation groove 13 can be kept in a suitable temperature range. In the process of heat dissipation by the placement frame 5 through the heat sink 7, a heat dissipation channel is provided for the protective shell 1, so that the heat generated by the lithium battery in the placement frame 5 is effectively transferred to the external environment. A dustproof net 14 is installed inside the heat dissipation groove 8, which can effectively block dust and micro Small particles enter the interior of the protective shell 1 and damage the lithium battery inside the placement frame 5, thereby achieving the effect of heat dissipation. The bottom of the protective cover 2 installed on the top of the protective shell 1 is connected to the explosion-proof plate 3. When the internal pressure of the lithium battery in the placement frame 5 inside the protective shell 1 increases abnormally, the explosion-proof plate 3 will automatically rupture under the maximum pressure to release the internal gas and heat to reduce the pressure of the protective shell 1 and prevent the protective shell 1 from rupturing due to excessive pressure. A safety valve 4 is installed on the surface of the protective shell 1. When the pressure of the lithium battery installed in the installation groove 13 is too high, the safety valve 4 will automatically open along the pressure relief groove 6 opened at the bottom of the placement frame 5 to release excess gas to prevent the internal pressure of the protective shell 1 from being too high and exploding, thereby achieving an explosion-proof effect.

[0030] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A lithium battery assembly structure, characterized in that: The protective shell (1) comprises a protective cover (2) clamped on the top of the protective shell (1), an explosion-proof disk (3) fixedly connected to the bottom of the protective shell (1), a safety valve (4) fixedly connected to the outer surface of the protective shell (1), a placement frame (5) clamped inside the protective shell (1), a pressure relief groove (6) provided at the bottom of the placement frame (5), a heat sink (7) fixedly connected to the inner surface of the protective shell (1), and a heat dissipation groove (8) provided on one side of the protective shell (1).

2. The assembly structure of a lithium battery according to claim 1, characterized in that: A handle (9) is fixedly connected to the upper surface of the protective shell (1), fixing holes (10) are provided on both sides of the protective shell (1), and fixing threads (11) are threadedly connected inside the fixing holes (10).

3. The lithium battery assembly structure according to claim 1, characterized in that: A partition plate (12) is fixedly connected inside the placement frame (5), and a mounting groove (13) is provided inside the placement frame (5).

4. The lithium battery assembly structure according to claim 1, characterized in that: A dustproof net (14) is fixedly connected inside the heat dissipation slot (8), and a sealant (15) is fixedly connected to one side of the dustproof net (14).

5. The lithium battery assembly structure according to claim 3, characterized in that: A fixing groove (16) is fixedly connected to the bottom of the installation groove (13), and a pole ear (17) is fixedly connected inside the fixing groove (16).

6. The lithium battery assembly structure according to claim 1, characterized in that: A shock absorbing plate (18) is fixedly connected to the bottom of the protective shell (1), and a placement frame (5) is fixedly connected to the top of the shock absorbing plate (18).

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