Bag type battery capable of preventing heating expansion

Abstract

The utility model discloses a bag type battery capable of preventing heating expansion, and relates to the related technical field of bag type batteries. The battery comprises a battery main body, a clamping nut and a nut, a plurality of radiating fins are transversely fixed on two sides of the battery main body, corrugated strips are fixed between upper and lower adjacent radiating fins, electrodes are symmetrically fixed at the top of the battery main body, and mounting screws are fixed at the top ends of the electrodes. Two clamping nuts are in threaded connection with the peripheral surface of each mounting screw rod, an outer screw cylinder is fixedly communicated with the center of the top of the battery main body, and a nut is in threaded connection with the peripheral surface of the outer screw cylinder. According to the utility model, the battery main body, the clamping nut and the nut are arranged, so that the problems that the bag-type battery is easy to bulge due to heating during working and the battery is damaged due to gas generated by the internal structure of the battery are solved, and the bag-type battery has the advantages that the bag-type battery has better heat dissipation performance, and the damage of the battery is reduced after the gas is generated in the battery.

Description

Technical Field

[0001] The utility model belongs to the technical field related to pouch-type batteries, and in particular relates to a pouch-type battery capable of preventing thermal expansion. Background Art

[0002] Pouch cells are batteries that use flexible plastic film as a packaging material. They are commonly used in lithium-ion batteries and are widely used in electric vehicles, portable electronic devices, and other fields due to their lightness, flexibility, and high energy density. The pouch cell design helps reduce the risk of internal short circuits and can be manufactured in various shapes and sizes to suit different application requirements. However, in actual use, they still have the following disadvantages:

[0003] When the pouch battery is working, the battery will heat up during the discharge process. When the battery heats up, if the heat is not dissipated in time, it will cause the battery to swell. After the battery swells, it is easy to cause damage to the battery and shorten the battery life.

[0004] During the charging and discharging process of the pouch battery, the structure thereof performs charging and discharging operations due to electrochemical reactions. During the charging and discharging operation of the battery, due to temperature rise, gas is generated in the internal structure of the battery, causing damage to the battery due to gas. Utility Model Content

[0005] The purpose of the utility model is to provide a bag-type battery that prevents thermal expansion. By providing a battery body, a clamping nut and a nut, the problem that the bag-type battery is prone to bulging due to heat during operation and that the internal structure of the battery generates gas that causes damage to the battery is solved.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The utility model is a bag-type battery that prevents heat expansion, including a battery body, a clamping nut and a nut. A plurality of heat dissipation fins are laterally fixed on both sides of the battery body, and a corrugated strip is fixed between the upper and lower adjacent heat dissipation fins. Electrodes are symmetrically fixed on the top of the battery body, and a mounting screw is fixed on the top of the electrode. Two clamping nuts are threadedly connected to the outer circumference of each mounting screw. An outer screw barrel is fixedly connected to the center of the top of the battery body, and a nut is threadedly connected to the outer circumference of the outer screw barrel. During operation, charging and discharging functions are provided by the battery body, external power connection equipment is installed through the clamping nut, and the mounting nut is screwed on the outer screw barrel on the battery body.

[0008] Furthermore, the side of the corrugated strip away from the battery body is corrugated, and the corrugated strip is fixed to the outer surface of the battery body. The corrugated strip increases the surface area of ​​heat dissipation by being corrugated, thereby preventing the battery body from heating and expanding.

[0009] Furthermore, a number of triangular plates are fixed at equal intervals on both end surfaces of the battery body, and an air guide plate is fixed between the upper and lower adjacent triangular plates. The air guide plate is fixed on the surface of the battery body, and the positions of the triangular plates correspond to the heat dissipation fins on both sides of the battery body. The battery body transports air to the heat dissipation fins and corrugated strips through the air guide plates on the triangular plates.

[0010] Furthermore, a gasket is provided on one end of the two clamping nuts on the side of the same mounting screw, which are close to each other. The gasket is movably provided on the side of the mounting screw. After the mounting screw is tightened by the clamping nut and the gasket, the battery body is electrically connected to the external electrical connection structure.

[0011] Furthermore, the top end of the nut is closed, and a connecting pipe is fixedly connected to the center of the top end of the nut, and the nut is connected to the fixing sleeve via the connecting pipe.

[0012] Furthermore, the top end of the connecting pipe is fixedly connected to a fixing sleeve, the top end of the fixing sleeve is open, and a flexible film is fixed to the lower inner portion of the fixing sleeve to partially accommodate air generated in the battery body.

[0013] The utility model has the following beneficial effects:

[0014] The utility model solves the problem that the bag-type battery is prone to bulging due to heat when working by setting a battery main body. When the battery main body starts working, it is installed in the equipment that needs to be used. When the battery main body moves with the equipment in use, the air guide plate is connected to it through the triangular plate, and the air contacted on the end face of the battery main body is made to flow quickly to both sides with less resistance through the air guide plate. The heat is first dissipated through the corrugated strips, and then the heat dissipation is enhanced through the heat dissipation fins, so that the surface of the battery main body is quickly dissipated, the battery is prevented from heating and expanding, the battery main body is prevented from heating and expanding, and the bulging of the battery due to heat is reduced.

[0015] The utility model solves the problem of battery damage caused by gas generated in the internal structure of the battery by arranging a battery main body, a clamping nut and a nut. After the power connection structure and the battery main body are installed through the clamping nut, the battery starts charging and discharging operations. After gas is generated in the battery main body, the gas is transported to the connecting pipe through the outer screw barrel and then to the fixing sleeve through the connecting pipe, causing the flexible film to expand and deform, reducing the internal pressure of the battery and reducing damage to the internal structure of the battery main body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A three-dimensional diagram of a pouch-type battery assembly structure that prevents thermal expansion;

[0018] Figure 2 It is a three-dimensional diagram of the main structure of the battery;

[0019] Figure 3 It is a three-dimensional diagram of the corrugated strip structure;

[0020] Figure 4 It is a three-dimensional diagram of the clamping nut structure;

[0021] Figure 5 It is a three-dimensional diagram of the nut structure.

[0022] Reference numerals:

[0023] 1. Battery body; 101. Heat dissipation fins; 102. Corrugated strips; 103. Triangular plate; 104. Air guide plate; 105. Electrode; 106. Mounting screw; 107. Outer barrel; 2. Clamping nut; 201. Washer; 3. Nut; 301. Connecting tube; 302. Fixing sleeve; 303. Flexible film. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Specific embodiment 1

[0025] See also Figure 1-5The utility model is a pouch-type battery that prevents thermal expansion, including a battery body 1, a clamping nut 2 and a nut 3. A plurality of heat dissipation fins 101 are fixed laterally on both sides of the battery body 1. The battery body 1 provides a storage function for electric energy, and the heat on the battery body 1 is dissipated through the heat dissipation fins 101. Corrugated strips 102 are fixed between the upper and lower adjacent heat dissipation fins 101. The corrugated strips 102 increase the heat dissipation area of ​​the battery body 1 and dissipate heat from the battery body 1. Electrodes 105 are symmetrically fixed on the top of the battery body 1. The mounting screws 106 are connected through the electrodes 105. The electrodes 10 5 is fixed with a mounting screw 106, and the mounting screw 106 mounts the clamping nut 2 thereon. Two clamping nuts 2 are threadedly connected to the outer circumference of each mounting screw 106. The clamping nut 2 cooperates with the gasket 201 to clamp the component connected to the electrode 105, so that the battery body 1 is electrically connected to the external charging and power-using structure. An outer barrel 107 is fixedly connected to the center of the top of the battery body 1, and the outer barrel 107 threadably connects the nut 3 thereto. The outer circumference of the outer barrel 107 is threaded with a nut 3, and the connecting pipe 301 is connected thereto through the nut 3.

[0026] Specifically, the side of the corrugated strip 102 away from the battery body 1 is corrugated, and the corrugated strip 102 is fixed on the outer surface of the battery body 1. The corrugated strip 102 is fixed to the surface of the battery body 1 and is corrugated away from the side of the battery body 1, thereby increasing the contact area of ​​the airflow and increasing the heat dissipation effect of the battery surface.

[0027] Furthermore, a number of triangular plates 103 are fixed at equal intervals on both end surfaces of the battery main body 1, and an air guide plate 104 is fixed between the upper and lower adjacent triangular plates 103. The air guide plate 104 is fixed on the surface of the battery main body 1. The positions of the triangular plates 103 correspond to the heat dissipation fins 101 on both sides of the battery main body 1. The battery main body 1 connects the air guide plate 104 thereto through the triangular plates 103, and the air contacted on the end surface of the battery main body 1 is made to flow quickly to both sides with less resistance through the air guide plate 104, and dissipate heat through the corrugated strips 102.

[0028] The operating process of this embodiment is as follows: when the battery body 1 starts working, it is installed in the equipment that needs to be used. When the battery body 1 moves with the equipment in use, the air guide plate 104 is connected to it through the triangular plate 103, and the air contacting the end surface of the battery body 1 is made to flow quickly to both sides with less resistance through the air guide plate 104. The heat is first dissipated through the corrugated strips 102, and then the heat dissipation is enhanced by the heat dissipation fins 101, so that the surface of the battery body 1 is quickly cooled to prevent the battery body 1 from heating and expanding. Specific embodiment 2

[0029] See also Figure 1 、 2, 4, 5. On the basis of the specific embodiment 1, a gasket 201 is provided at one end of the two clamping nuts 2 on the side of the same mounting screw 106, which is close to each other. The gasket 201 is movably provided on the side of the mounting screw 106. When the mounting screw 106 is installed on the power connection structure of the battery body 1, it is clamped to the outside of the mounting screw 106 through the external power connection structure and placed between the two clamping nuts 2, so that the power connection structure is installed when working.

[0030] Specifically, the top of the nut 3 is closed, and a connecting pipe 301 is fixedly connected to the center of the top of the nut 3. The nut 3 is closed, and the connecting pipe 301 connects the nut 3 and the fixed sleeve 302.

[0031] Furthermore, the top of the connecting tube 301 is fixedly connected to a fixing sleeve 302, the top of the fixing sleeve 302 is open, and a flexible film 303 is fixed to the lower part of the fixing sleeve 302. The connecting tube 301 connects the flexible film 303 therein through the fixing sleeve 302. After gas is generated in the battery body 1 through the flexible film 303, the gas is transported to the connecting tube 301 through the outer spiral barrel 107, and then transported to the fixing sleeve 302 through the connecting tube 301, causing the flexible film 303 to expand and deform.

[0032] The operating process of this embodiment is as follows: when working, first, the wire ear of the external power connection structure is clamped to the outside of the installation screw 106 and placed between the two clamping nuts 2, so that the two gaskets 201 are respectively placed above and below the wire ear, and the two clamping nuts 2 are rotated closer to each other until the two clamping nuts 2 on the outside of the same installation screw 106 cooperate with the gasket 201 to clamp the wire ear, and the power connection structure is installed. After gas is generated in the battery body 1, the gas is transported to the connecting pipe 301 through the outer screw barrel 107, and then transported to the fixing sleeve 302 through the connecting pipe 301, so that the flexible film 303 expands and deforms, thereby reducing damage to the internal structure of the battery body 1.

[0033] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0034] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A pouch-type battery for preventing thermal expansion, comprising a battery body (1), a clamping nut (2) and a nut (3), characterized in that: A plurality of heat dissipation fins (101) are laterally fixed on both sides of the battery body (1), and corrugated strips (102) are fixed between the upper and lower adjacent heat dissipation fins (101). Electrodes (105) are symmetrically fixed on the top of the battery body (1), and mounting screws (106) are fixed on the top of the electrodes (105). Two clamping nuts (2) are threadedly connected to the outer peripheral surface of each mounting screw (106). An outer screw barrel (107) is fixedly connected to the center of the top of the battery body (1), and a nut (3) is threadedly connected to the outer peripheral surface of the outer screw barrel (107).

2. The pouch-type battery for preventing thermal expansion according to claim 1, characterized in that: The side of the corrugated strip (102) away from the battery main body (1) is corrugated, and the corrugated strip (102) is fixed on the outer surface of the battery main body (1).

3. The pouch-type battery for preventing thermal expansion according to claim 1, characterized in that: A plurality of triangular plates (103) are fixed at equal intervals on both end surfaces of the battery body (1), and an air guide plate (104) is fixed between the upper and lower adjacent triangular plates (103). The air guide plate (104) is fixed on the surface of the battery body (1), and the positions of the triangular plates (103) and the heat dissipation fins (101) on both sides of the battery body (1) correspond.

4. The pouch-type battery for preventing thermal expansion according to claim 1, characterized in that: A gasket (201) is provided at one end of the two clamping nuts (2) on the circumferential side of the same mounting screw (106) and close to each other. The gasket (201) is movably provided on the circumferential side of the mounting screw (106).

5. The pouch-type battery for preventing thermal expansion according to claim 1, characterized in that: The top end of the nut (3) is closed, and a connecting pipe (301) is fixedly connected to the center of the top end of the nut (3).

6. The pouch-type battery for preventing thermal expansion according to claim 5, characterized in that: The top end of the connecting tube (301) is fixedly connected to a fixing sleeve (302), the top end of the fixing sleeve (302) is open, and a flexible film (303) is fixed to the lower portion of the fixing sleeve (302).

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