Stable button cell with high energy density

Abstract

The utility model relates to the technical field of high-energy batteries, and discloses a stable high-energy-density button cell, which comprises a shell assembly, a fixed assembly, an external assembly and an electricity storage assembly, the fixed assembly is sleeved in the shell assembly, the external assembly is arranged at the top of the shell assembly, and the electricity storage assembly is arranged in the shell assembly; the internal sealing performance of the battery is improved, meanwhile, the waterproof performance of the battery is improved, and water spots of the battery are prevented from directly entering the battery through gaps to cause short circuit, so that the battery can stably provide power in an extreme environment; the energy density of the battery can be improved, the battery can store more electric energy under the condition of the same volume or weight, the method is particularly important for designing compact equipment, the cruising ability of the battery is remarkably improved on the premise that the volume and weight of the equipment are not increased, and therefore the requirement of a user for long-time use is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to high energy battery technical field more particularly to a stable high energy density button cell. BACKGROUND

[0002] Button cell is widely used in many fields because of its small size, high energy density and stable power output. In consumer electronics, button cell plays an important role in watches, calculators, remote controls, car keys and other daily necessities. However, the existing button cell cannot obtain longer battery life without increasing the size and weight, which limits the use time of the device and cannot meet the long-time use demand of users.

[0003] The reason is that, in addition to the relatively difficult change of the energy density of the battery, the internal sealing of the ordinary button cell is still lacking. In some cases, external moisture or other liquids can easily enter the battery through the gap, which may cause short circuit and increase the current sharply. Long-term use may also cause battery overheating, thermal runaway, and even fire or explosion, which poses a certain safety hazard. Therefore, it is of practical significance to optimize the existing button cell packaging structure and improve the energy density and stability. SUMMARY

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a stable high energy density button cell to solve the problems in the above background art.

[0005] The utility model provides the following technical scheme: a stable high energy density button cell, comprising a shell assembly, a fixing assembly, an external assembly and a power storage assembly, the fixing assembly at least comprising a positive plate, the positive plate being sleeved in the inside of the shell assembly, the external assembly being installed at the top of the shell assembly, the power storage assembly being arranged in the inside of the shell assembly, the external assembly comprising a sealing ring, a first fixing groove, a waterproof sealing ring and a second fixing groove, the sealing ring being fixedly connected to the outer surface of the positive plate, the first fixing groove being opened in the inside of the sealing ring, the waterproof sealing ring being movably clamped in the inside of the sealing ring and the outside of the positive plate, the second fixing groove being opened in the outside of the positive plate, and the inner surface of the positive plate being provided with a groove accommodating the power storage assembly.

[0006] Preferably, the shell assembly is provided with an insulating shell, a first clamping groove and a second clamping groove, the first clamping groove being T-shaped and opened on the inner wall of the insulating shell, and the second clamping groove being opened below the first clamping groove on the inner wall of the insulating shell.

[0007] Preferably, the fixing assembly comprises a positive plate and a snap ring, the positive plate is fixedly installed at the top of the inner cavity of the insulating shell, and the snap ring is fixedly connected to the outer surface of the positive plate and is fixedly sleeved in the first clamping groove.

[0008] Preferably, the fixing assembly comprises an L-shaped fixing ring, a circular sealing ring and a negative plate, the L-shaped fixing ring is fixedly connected below the outer surface of the snap ring of the positive plate and is fixedly sleeved in the second clamping groove, the circular sealing ring is arranged at the top of one side of the L-shaped fixing ring, and the negative plate is fixedly installed at the bottom of the insulating shell.

[0009] Preferably, the electricity storage assembly comprises a solid-state electrolyte, a diaphragm and an electrolyte storage chamber, the solid-state electrolyte is arranged in the inner cavity of the insulating shell and located at the bottom of the positive plate and the top of the negative plate, the outer portion of the solid-state electrolyte is fixedly sleeved with the diaphragm, and the diaphragm and the insulating shell form the electrolyte storage chamber.

[0010] The utility model discloses the beneficial effect is approximately as follows:

[0011] 1. The shell assembly and the fixing assembly of the utility model have respective structures and cooperation modes, which are beneficial to improving the internal sealing of the battery, enhancing the waterproof performance of the battery, avoiding water stains in the battery from directly entering the battery through gaps to cause short circuit, and enabling the battery to stably provide power in relatively severe environments.

[0012] 2. The fixing assembly and the electricity storage assembly also have reasonable function combinations, which make the structure of the electricity storage assembly more stable, enable the battery to store more electric energy under the same volume or weight, improve the energy density of the battery, are particularly important for designing compact equipment, allow the endurance of the equipment to be significantly improved without increasing the volume and weight of the equipment, and thus meet the long-time use requirements of users on electrical appliances. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a whole structure schematic view of the utility model.

[0014] Figure 2 It is a whole structure schematic view and a partial section view of the utility model.

[0015] The reference signs are as follows: 1, shell assembly; 101, insulating shell; 102, first clamping groove; 103, second clamping groove; 2, fixing assembly; 201, positive plate; 202, snap ring; 203, L-shaped fixing ring; 204, circular sealing ring; 205, negative plate; 3, external assembly; 301, sealing ring; 302, first fixing groove; 303, waterproof sealing ring; 304, second fixing groove; 4, electricity storage assembly; 401, solid-state electrolyte; 402, diaphragm; 403, electrolyte storage chamber. DETAILED DESCRIPTION

[0016] The technical solutions in the utility model will be described clearly and completely in combination with the drawings in the utility model, and the forms of each structure described in the following embodiments are only examples, and the technical solutions of the stable high-energy-density button cell involved in the utility model are not limited to each structure described in the following embodiments, and all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0017] In combination with Figure 1 With Figure 2 As shown, generally, the utility model discloses a technical solution of a stable high-energy-density button cell, comprising a shell assembly 1, a fixing assembly 2, an external assembly 3 and a power storage assembly 4, the fixing assembly 2 at least comprises a positive plate 201, the positive plate 201 is sleeved in the inside of the shell assembly 1, the external assembly 3 is installed at the top of the shell assembly 1, and the power storage assembly 4 is arranged in the inside of the shell assembly 1.

[0018] The external assembly 3 comprises a sealing ring 301, a first fixing groove 302, a waterproof sealing ring 303 and a second fixing groove 304, the sealing ring 301 is fixedly connected to the outer surface of the positive plate 201, the first fixing groove 302 is arranged in the inside of the sealing ring 301, the waterproof sealing ring 303 is movably clamped in the inside of the sealing ring 301 and the outside of the positive plate 201, the second fixing groove 304 is arranged in the outside of the positive plate 201, and the inner surface of the positive plate 201 is provided with a recess for accommodating the power storage assembly 4, the above structure completely wraps the sealing ring 301 and the waterproof sealing ring 303 in the positive plate 201 and the shell assembly 1 through the completely wrapped structure, the wrapped shell assembly 1 comprises a metal material capable of deforming, the deformation of the metal material and the deformation of the sealing material can be fully utilized, the two are matched with each other to maximize the elimination of the gap between each other, the structural strength and the sealing performance of the button cell as a whole are improved, and the positive plate 201 can utilize the internal stress change caused by the sealing structure, accommodate more solid-state electrolyte 401 by utilizing the recess on the inner surface thereof, and tightly package the solid-state electrolyte 401 in the button cell, so that the total energy of the button cell is improved to a certain extent.

[0019] The shell assembly 1 is provided with an insulating shell 101, a first clamping groove 102 and a second clamping groove 103, the first clamping groove 102 is arranged in the form of T on the inner wall of the insulating shell 101, and the second clamping groove 103 is arranged below the first clamping groove 102 on the inner wall of the insulating shell 101, and the above structure helps to completely wrap the sealing structure in the shell of the battery and fully utilize the deformation performance of the sealing material for lamination and fixation.

[0020] The fixed assembly 2 further comprises a snap ring 202, an L-shaped fixing ring 203, a circular sealing ring 204 and a negative plate 205, the positive plate 201 is fixedly installed at the top of the inner cavity of the insulating shell 101, the snap ring 202 is fixedly connected to the outer surface of the positive plate 201 and is fixedly sleeved in the first clamping groove 102, the L-shaped fixing ring 203 is fixedly connected to the outer surface of the positive plate 201 below the snap ring 202 and is fixedly sleeved in the second clamping groove 103, the circular sealing ring 204 is arranged at the top of one side of the L-shaped fixing ring 203, and the negative plate 205 is fixedly installed at the bottom of the insulating shell 101, and the above-mentioned structures can form a resultant force relationship, which will be analyzed below, and the stable overall structure also helps the battery to resist relatively severe external environment and stably output electric energy, so that the electrical appliance can be operated for a longer time.

[0021] The electricity storage assembly 4 comprises a solid-state electrolyte 401, a diaphragm 402 and an electrolyte storage chamber 403, the solid-state electrolyte 401 is arranged in the inner cavity of the insulating shell 101 and located at the bottom of the positive plate 201 and the top of the negative plate 205, and the outer part of the solid-state electrolyte 401 is fixedly sleeved with the diaphragm 402, and the diaphragm 402 and the insulating shell 101 form the electrolyte storage chamber 403, and the above-mentioned structure is arranged by referring to the existing button cell, and the purpose is to prevent the positive plate 201 and the negative plate 205 from directly contacting and causing short circuit and conducting lithium ions.

[0022] In the technical scheme disclosed by the utility model, the circular sealing ring 204 and the waterproof sealing ring 303 are arranged at the top inside the insulating shell 101, and a full-coating structure is adopted, when the battery is assembled, the position is better fitted to the contact surface of the two components, can fully bear the convergence force applied during assembly, and the elastic deformation of the sealing ring can better adapt to the shape of the components, so as to help improve the sealing performance of the battery, and also improve the waterproof performance of the battery, so as to avoid the direct entry of the battery water stain into the battery through the gap to cause short circuit; as a technical feature for optimizing the energy density of the battery, the snap ring 202 and the L-shaped fixing ring 203 arranged by the utility model can help the positive plate 201 and the insulating shell 101 to be embedded, especially the L-shaped fixing ring 203 and the snap ring 202 not only can apply restraint force to the solid-state electrolyte 401 wrapped by the diaphragm 402 and resist the internal stress, but also, when they are restrained relative to each other, the resultant force formed by the L-shaped fixing ring 203 under the constraint of the outer insulating shell 101 makes the solid-state electrolyte 401 more tend to the positive plate 201, reduces the pressure on the negative plate 205, and the overall stress relationship is relatively more reasonable, further improves the stability of the battery as a whole, and the recess at the bottom of the positive plate 201 also helps to increase the capacity of the solid-state electrolyte 401 inside the battery, so that the battery has higher electric energy reserve.

[0023] In the description of the present application, it is necessary to explain that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, which can be mechanical connection or electrical connection, or the communication inside two elements, or direct connection, "up", "down", "left", "right" and the like are only used to represent relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change; the utility model discloses an embodiment of the drawings, only relate to the structure involved in the embodiment of the present disclosure, other structures can refer to the usual design, under the condition of no conflict, the same embodiment and different embodiments of the utility model can be combined with each other;The above only for preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model, should be included in the protection scope of the utility model.

Claims

1. A stable high-energy-density coin cell, comprising a casing assembly (1), a fixing assembly (2), an external assembly (3), and an energy storage assembly (4), characterized in that: The fixing component (2) includes at least a positive electrode plate (201), which is sleeved inside the housing component (1). The external component (3) is installed on the top of the housing component (1). The energy storage component (4) is disposed inside the housing component (1), and the inner surface of the positive electrode plate (201) is provided with a groove for accommodating the energy storage component (4). The external component (3) includes a sealing ring (301), a first fixing groove (302), a waterproof sealing ring (303), and a second fixing groove (304). The sealing ring (301) is fixedly connected to the outer surface of the positive electrode (201). The first fixing groove (302) is opened inside the sealing ring (301). The waterproof sealing ring (303) is movably engaged between the inside of the sealing ring (301) and the outside of the positive electrode (201). The second fixing groove (304) is opened outside the positive electrode (201).

2. The stable high-energy-density coin cell according to claim 1, characterized in that: The housing assembly (1) has an insulating shell (101), a first slot (102) and a second slot (103). The first slot (102) is T-shaped and located on the inner wall of the insulating shell (101). The second slot (103) is located below the first slot (102) on the inner wall of the insulating shell (101).

3. The stable high-energy-density coin cell according to claim 1, characterized in that: The fixing component (2) also includes a retaining ring (202). The positive electrode (201) is fixedly installed on the top of the inner cavity of the insulating shell (101). The retaining ring (202) is fixedly connected to the outer surface of the positive electrode (201) and is fixedly sleeved in the first retaining groove (102).

4. The stable high-energy-density coin cell according to claim 1, characterized in that: The fixing component (2) further includes an L-shaped fixing ring (203), a circular sealing ring (204), and a negative electrode plate (205). The L-shaped fixing ring (203) is fixedly connected in an L-shape to the lower part of the retaining ring (202) on the outer surface of the positive electrode plate (201), and the L-shaped fixing ring (203) is fixedly sleeved in the second retaining groove (103). The circular sealing ring (204) is located on the top of one side of the L-shaped fixing ring (203), and the negative electrode plate (205) is fixedly installed at the bottom of the insulating shell (101).

5. The stable high-energy-density coin cell according to claim 1, characterized in that: The energy storage component (4) includes a solid electrolyte (401), a diaphragm (402), and an electrolyte storage chamber (403). The solid electrolyte (401) is disposed in the inner cavity of the insulating shell (101) and located at the bottom of the positive electrode (201) and the top of the negative electrode (205). The diaphragm (402) is fixedly sleeved on the outside of the solid electrolyte (401). An electrolyte storage chamber (403) is formed between the diaphragm (402) and the insulating shell (101).

Images