A battery fixture

Abstract

The utility model relates to battery manufacturing technical field especially relates to a kind of battery fixture. Battery fixture includes jig box and two separate components, and jig box is equipped with containing cavity, first air hole and second air hole, and containing cavity is used to install battery;Two separate components are respectively installed in the opposite two inner side walls of containing cavity;Separate component includes the annular seal of being equipped with annular space, and first air hole is communicated annular space, and containing cavity includes the first space of being arranged in annular seal inside and the second space of being arranged in annular seal outside, and second air hole is communicated first space;When annular seal is inflated and sticks to the front of battery, first space does not communicate second space;When annular seal deflates and separates from the front of battery, first space communicates second space. In the utility model, the battery fixture is used for battery formation when under positive pressure environment, and battery is not prone to concave accident.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a battery fixture. Background Technology

[0002] Battery formation is a process that uses a specific charge and discharge cycle to bring a fresh battery to its optimal performance. The main purpose of battery formation is to improve battery capacity, extend battery life, and enhance battery safety.

[0003] Batteries typically undergo formation and stabilization processes using clamping fixtures or containment fixtures. Clamping fixtures hold the battery with clamps, but the clamping action can leave indentations on the battery surface, and the pressure from the clamps can be unevenly distributed. Containment fixtures have a cavity for holding the battery, connected to an external pump via a connector. Gas is injected into the cavity, creating a positive pressure environment that allows the battery to charge and discharge under this pressure. A battery consists of a casing and battery cells housed within it. Since the battery cells cannot completely fill the internal space of the casing, the casing is not supported by the cells. When the battery is formed under positive pressure, dents can easily appear around the casing. These dents not only affect battery performance but also detract from its aesthetics. Summary of the Invention

[0004] This utility model provides a battery fixture to solve the technical problem that the battery casing is prone to dents when the battery is formed under positive pressure gas confinement.

[0005] An embodiment of this utility model provides a battery fixture, including a fixture box and two partition components. The fixture box is provided with a receiving cavity, a first air hole and a second air hole. The receiving cavity is used to install a battery. The two partition components are respectively installed on the two opposite inner sidewalls of the receiving cavity. The separating component includes an annular seal with an annular space, the first vent communicating with the annular space, and the receiving cavity including a first space disposed inside the annular seal and a second space disposed outside the annular seal, the second vent communicating with the first space. When the annular seal bulges and fits against the front of the battery, the first space is not connected to the second space; When the annular seal deflates and separates from the front of the battery, the first space connects to the second space.

[0006] Optionally, the annular seal includes an annular airbag, and the annular space is disposed within the annular airbag.

[0007] Optionally, the annular seal includes an annular sealing ring that fits against the inner wall of the jig box, and the annular space is disposed between the annular sealing ring and the inner wall of the jig box.

[0008] Optionally, the separating assembly further includes an annular pressure plate and an inner pressure plate; The inner pressure plate is installed on the inner wall of the jig box and is located in the first space, and is used to press one side of the annular sealing ring against the inner wall of the jig box. The annular pressure plate is installed on the inner wall of the jig box and located in the second space, and is used to press the other side of the annular sealing ring against the inner wall of the jig box.

[0009] Optionally, the annular sealing ring includes an annular sealing portion and a first annular branch and a second annular branch connected to opposite sides of the annular sealing portion. The first annular branch has a first annular flange on the side away from the annular sealing portion, and the second annular branch has a second annular flange on the side away from the annular sealing portion. The inner pressure plate is used to press the first annular flange against the inner wall of the jig box, and the annular pressure plate is used to press the second annular flange against the inner wall of the jig box.

[0010] Optionally, an accommodating space is provided between the inner pressure plate and the inner wall of the fixture box, and the partition assembly further includes a heating element installed in the accommodating space.

[0011] Optionally, the partition assembly further includes an insulation element mounted on the inner pressure plate and located in the first space.

[0012] Optionally, the fixture box is further provided with a first through hole and a second through hole that are both connected to the receiving cavity, the first through hole being disposed opposite to the first electrode of the battery, and the second through hole being disposed opposite to the second electrode of the battery; The battery fixture further includes a first sealing ring and a second sealing ring. The first sealing ring is installed on the inner wall of the receiving cavity and is arranged around the first through hole. The second sealing ring is installed on the inner wall of the receiving cavity and is arranged around the second through hole.

[0013] Optionally, the battery fixture further includes a liquid injection tank, a liquid injection nozzle, and a liquid guiding connector; the liquid guiding connector is installed on the fixture box and is used to communicate with the inner cavity of the battery; The injection tank is provided with a storage space for storing electrolyte, and the injection nozzle is installed on the injection tank and connected to the storage space; the injection nozzle is used to connect or disconnect the liquid guide connector.

[0014] Optionally, the first air hole includes a first air inlet and a first air outlet, and the second air hole includes a second air inlet and a second air outlet; Both the first air inlet and the second air inlet extend from the first side of the fixture box, and both the first air outlet and the second air outlet extend from the second side of the fixture box. The first side and the second side are opposite sides of the fixture box.

[0015] In this invention, because the annular seal fits against the front of the battery, the middle part of the front of the battery (the part with the battery cell) faces the first space, and the four sides of the front of the battery (the parts without the battery cell) face the second space. The first space and the second space are separated by the annular seal (the first space and the second space are not connected). Therefore, when the first space is injected into a positive pressure state through the first vent, the four sides of the front of the battery will not be affected by the positive pressure, so the four sides of the front of the battery will not be dented. Since the middle part of the front of the battery is supported by the battery cell, the middle part of the front of the battery will not be dented, thus ensuring the quality and aesthetics of the battery. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model 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 a battery fixture provided in one embodiment of the present invention; Figure 2 This is a vertical sectional view of a battery fixture provided in an embodiment of the present invention; Figure 3 yes Figure 2 A magnified view of a section at point A in the middle; Figure 4 This is a cross-sectional view of a battery fixture provided in an embodiment of the present invention; Figure 5 yes Figure 4 A magnified view of a section at point B in the middle; Figure 6 This is an exploded structural diagram of the separator component of a battery fixture provided in an embodiment of this utility model.

[0018] The reference numerals in the accompanying drawings are as follows: 1. Fixture box; 11. Receiving cavity; 111. First space; 112. Second space; 12. First vent; 13. Second vent; 14. First through hole; 15. Second through hole; 16. First sealing ring; 17. Second sealing ring; 2. Separating assembly; 21. Annular seal; 211. Annular sealing ring; 2111. Annular sealing part; 2112. First annular support; 2113. Second annular support; 2114. First annular flange; 2115. Second annular flange; 210. Annular space; 22. Annular pressure plate; 23. Inner pressure plate; 24. Heating element; 25. Insulation element; 3. First guide needle; 4. Second guide needle; 5. Liquid filling tank; 51. Liquid storage space; 6. Liquid filling nozzle; 7. Liquid guiding connector; 100. Battery. Detailed Implementation

[0019] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] like Figures 1 to 6 As shown, an embodiment of the present invention provides a battery fixture, including a fixture box 1 and two partition components 2. The fixture box 1 is provided with a receiving cavity 11, a first air hole 12 and a second air hole 13. The receiving cavity 11 is used to install a battery 100. The two partition components 2 are respectively installed on the two opposite inner sidewalls of the receiving cavity 11. The separating component 2 includes an annular seal 21 with an annular space 210, the first vent 12 communicates with the annular space 210, the receiving cavity 11 includes a first space 111 disposed inside the annular seal 21 and a second space 112 disposed outside the annular seal 21, the second vent 13 communicates with the first space 111. When the annular seal 21 bulges up and fits against the front of the battery 100, the first space 111 is not connected to the second space 112; When the annular seal 21 degassing and separating from the front of the battery 100, the first space 111 connects to the second space 112.

[0021] The battery 100 is a hard-shell battery, and the two separating components 2 are symmetrically arranged. The first air hole 12 and the second air hole 13 are used to connect to an external air pump. The annular seal 21 includes, but is not limited to, an airbag, a sealing ring, etc. The second space 112 surrounds the first space 111, and the first space 111 is arranged opposite to the middle part of the front of the battery 100 (that is, opposite to the part of the battery 100 where the battery cell is assembled), and the second space 112 is arranged opposite to the four sides of the front of the battery 100 (that is, opposite to the part of the battery 100 without the battery cell).

[0022] Specifically, firstly, gas is injected into the annular space 210 through the first vent 12. When the annular seal 21 bulges and adheres to the front of the battery 100, the annular seal 21 keeps the first space 111 and the second space 112 in a non-communicating state. Then, gas is injected into the first space 111 through the second vent 13, and the first space 111 is in a positive pressure state, so that the battery 100 can complete the formation and settling steps under positive pressure. After the annular space 210 is degassed through the first vent, the annular seal 21 is no longer in contact with the front of the battery 100, and the first space 111 is connected to the second space.

[0023] In this invention, since the annular seal 21 is attached to the front of the battery 100, the middle part of the front of the battery 100 (the part with the battery cell) faces the first space 111, and the four sides of the front of the battery 100 (the parts without the battery cell) face the second space 112. The first space 111 and the second space 112 are separated by the annular seal 21 (the first space 111 and the second space 112 are not connected). Therefore, when the first space 111 is injected into a positive pressure state through the first air hole 12, the four sides of the front of the battery 100 will not be affected by the positive pressure, so the four sides of the front of the battery 100 will not be dented. Since the middle part of the front of the battery 100 is supported by the battery cell, the middle part of the front of the battery 100 will not be dented, thus ensuring the quality and aesthetics of the battery 100.

[0024] In one embodiment, the annular seal 21 includes an annular airbag (not shown in the figure), and the annular space 210 is disposed within the annular airbag.

[0025] The annular airbag can be connected to the first air hole 12 through an air nozzle. The annular airbag can be directly installed on the inner wall of the jig box 1, or it can be indirectly installed on the inner wall of the jig box 1 through a support member.

[0026] In this embodiment, the annular airbag is an integral structural component, which has good airtightness and ensures the stability of the annular airbag in separating the first space 111 and the second space 112.

[0027] In one embodiment, such as Figures 2 to 6 As shown, the annular seal 21 includes an annular sealing ring 211 that fits against the inner wall of the jig box 1, and the annular space 210 is disposed between the annular sealing ring 211 and the inner wall of the jig box 1.

[0028] The annular sealing ring 211 is a flexible component.

[0029] Specifically, when gas is introduced into the annular space 210 through the first vent 12, the middle part of the annular sealing ring 211 bulges up and fits against the front of the battery 100, and the first space 111 and the second space 112 are not in communication; when the annular space 210 is depressurized through the first vent 12, the middle part of the annular sealing ring 211 does not fit against the front of the battery 100, and the first space 111 and the second space 112 are in communication.

[0030] In this embodiment, the middle part of the annular sealing ring 211 can be set as a plane, so that the middle part of the annular sealing ring 211 can be tightly fitted with the front side of the battery 100, ensuring the stability of the annular sealing ring 211 in separating the first space 111 and the second space 112.

[0031] In one embodiment, such as Figures 2 to 6 As shown, the separating component 2 also includes an annular pressure plate 22 and an inner pressure plate 23; The inner pressure plate 23 is installed on the inner wall of the jig box 1 and is located in the first space 111. It is used to press one side of the annular sealing ring 211 against the inner wall of the jig box 1. The annular pressure plate 22 is installed on the inner wall of the jig box 1 and is located in the second space 112. It is used to press the other side of the annular sealing ring 211 against the inner wall of the jig box 1.

[0032] The annular pressure plate 22 and the inner pressure plate 23 can both be fixedly installed on the jig box 1 by fasteners such as screws and bolts.

[0033] In this embodiment, the inner pressure plate 23 can press the inner side of the annular sealing ring 211 onto the inner wall of the jig box 1, and the annular pressure plate 22 can press the outer side of the annular sealing ring 211 onto the inner wall of the jig box 1, ensuring the stability of the annular sealing ring 211 installed on the inner wall of the jig box 1, while also ensuring the sealing of the annular space 210.

[0034] In one embodiment, such as Figures 2 to 5 As shown, the annular sealing ring 211 includes an annular sealing portion 2111 and a first annular branch 2112 and a second annular branch 2113 connected to opposite sides of the annular sealing portion 2111. The first annular branch 2112 is provided with a first annular flange 2114 on the side away from the annular sealing portion 2111, and the second annular branch 2113 is provided with a second annular flange 2115 on the side away from the annular sealing portion 2111. The inner pressure plate 23 is used to press the first annular flange 2114 onto the inner wall of the jig box 1, and the annular pressure plate 22 is used to press the second annular flange 2115 onto the inner wall of the jig box 1.

[0035] Among them, the annular sealing part 2111, the first annular support 2112 and the second annular support 2113 are integrally formed parts.

[0036] In this embodiment, the inner pressure plate 23 presses the first annular flange 2114 against the inner wall of the jig box 1. The contact area between the inner pressure plate 23, the first annular flange 2114, and the inner wall of the jig box 1 is large, ensuring the stability of the inner side of the annular sealing ring 211 adhering to the inner wall of the jig box 1. The annular pressure plate 22 presses the second annular flange 2115 against the inner wall of the jig box 1. The contact area between the annular pressure plate 22, the second annular flange 2115, and the inner wall of the jig box 1 is large, ensuring the stability of the outer side of the annular sealing ring 211 adhering to the inner wall of the jig box 1.

[0037] In one embodiment, such as Figures 2 to 6 As shown, an accommodating space is provided between the inner pressure plate 23 and the inner wall of the fixture box 1, and the partition assembly 2 also includes a heating element 24 installed in the accommodating space.

[0038] The heating element 24 includes, but is not limited to, a heating plate, heating wire, etc.

[0039] In this embodiment, the heating element 24 can heat the gas in the accommodating cavity 11, so that the battery 100 is in the heated space, which improves the applicability and versatility of the battery fixture.

[0040] In one embodiment, such as Figures 2 to 6 As shown, the partition assembly 2 also includes a thermal insulation component 25 installed on the inner pressure plate 23 and located in the first space 111.

[0041] The insulation component 25 includes, but is not limited to, insulation cotton; the insulation component 25 and the heating component 24 are respectively installed on the opposite surfaces of the inner pressure plate 23.

[0042] In this embodiment, the heat insulation component 25 can achieve the technical effect of heat preservation, thereby reducing the energy loss of the battery fixture.

[0043] In one embodiment, such as Figure 1 and Figure 2 As shown, the fixture box 1 is also provided with a first through hole 14 and a second through hole 15 that are both connected to the receiving cavity 11. The first through hole 14 is disposed opposite to the first electrode of the battery, and the second through hole 15 is disposed opposite to the second electrode of the battery. The battery fixture also includes a first sealing ring 16 and a second sealing ring 17. The first sealing ring 16 is installed on the inner wall of the receiving cavity 11 and is arranged around the first through hole 14. The second sealing ring 17 is installed on the inner wall of the receiving cavity 11 and is arranged around the second through hole 15.

[0044] The first through hole 14 is installed on the top of the jig box 1, and the second through hole 15 is installed on the bottom of the jig box 1. Of the first electrode and the second electrode, one is the positive electrode of the battery 100, and the other is the negative electrode of the battery 100.

[0045] Specifically, when the battery 100 is installed in the receiving cavity 11, the top surface of the battery 100 abuts against the first sealing ring 16, thereby sealing the first through hole 14. The bottom surface of the battery 100 abuts against the second sealing ring 17, thereby sealing the second through hole 15. The first electrode of the battery 100 is located directly below the first through hole 14, and the second electrode of the battery 100 is located directly above the second through hole 15. During the battery's resting or formation process, an external first conductive element can extend into the first through hole 14 and be electrically connected to the first electrode of the battery 100, and an external second conductive element can extend into the second through hole 15 and be electrically connected to the second electrode of the battery 100, thereby completing the charging and discharging of the battery 100.

[0046] In this embodiment, the battery fixture does not need to be equipped with a first conductive component and a second conductive component, which reduces the manufacturing cost of the battery fixture and avoids problems such as air leakage and high wire resistance caused by the wiring harness in the first and second conductive components.

[0047] Furthermore, the battery fixture also includes a control board (not shown in the figure) mounted on the fixture box 1, and the control board is electrically connected to the first guide pin 3, the second guide pin 4 and the heating element 24.

[0048] In one embodiment, such as Figure 1 and Figure 2As shown, the battery fixture also includes a liquid injection tank 5, a liquid injection nozzle 6, and a liquid guiding connector 7; the liquid guiding connector 7 is installed on the fixture box 1 and is used to communicate with the inner cavity of the battery 100. The injection tank 5 is provided with a storage space 51 for storing electrolyte, and the injection nozzle 6 is installed on the injection tank 5 and connected to the storage space 51; the injection nozzle 6 is used to connect or disconnect the liquid guide connector 7.

[0049] The injection nozzle 6 is installed at the bottom of the injection tank 5, and the liquid guide connector 7 is installed at the top of the fixture box 1.

[0050] Specifically, when the battery 100 is installed in the receiving cavity 11, the outlet of the liquid guide connector 7 is directly connected to the liquid injection port of the battery 100; after the liquid injection nozzle 6 is connected to the inlet of the liquid guide connector 7, the liquid injection tank 5 can inject the electrolyte therein into the inner cavity of the battery 100.

[0051] In this embodiment, the battery fixture can also perform the electrolyte filling of the battery 100, further improving the applicability and versatility of the battery fixture.

[0052] In one embodiment, such as Figure 1 As shown, the first air hole 12 includes a first air inlet and a first air outlet, and the second air hole 13 includes a second air inlet and a second air outlet. Both the first air inlet and the second air inlet extend from the first side of the fixture box 1, and both the first air outlet and the second air outlet extend from the second side of the fixture box 1. The first side and the second side are opposite sides of the fixture box 1.

[0053] Gas can be injected into the annular space 210 through the first air inlet, and the gas in the annular space 210 can be output through the first air outlet; gas can be injected into the first space 111 or drawn into a negative pressure state through the second air inlet, and the gas in the first space 111 can be output through the second air outlet.

[0054] In this embodiment, both the first air inlet and the second air inlet extend from the first side of the fixture box 1, and both the first air outlet and the second air outlet extend from the second side of the fixture box 1, which facilitates the connection of the battery fixture and ensures the compactness and aesthetics of the battery fixture.

[0055] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A battery fixture, characterized in that, The device includes a jig box and two partition components. The jig box has a receiving cavity, a first vent, and a second vent. The receiving cavity is used to install a battery. The two partition components are respectively installed on opposite inner sidewalls of the receiving cavity. The separating component includes an annular seal with an annular space, the first vent communicating with the annular space, and the receiving cavity including a first space disposed inside the annular seal and a second space disposed outside the annular seal, the second vent communicating with the first space. When the annular seal bulges and fits against the front of the battery, the first space is not connected to the second space; When the annular seal deflates and separates from the front of the battery, the first space connects to the second space.

2. The battery fixture according to claim 1, characterized in that, The annular seal includes an annular airbag, and the annular space is disposed within the annular airbag.

3. The battery fixture according to claim 1, characterized in that, The annular seal includes an annular sealing ring that fits against the inner wall of the jig box, and the annular space is disposed between the annular sealing ring and the inner wall of the jig box.

4. The battery fixture according to claim 3, characterized in that, The partition assembly further includes an annular pressure plate and an inner pressure plate; The inner pressure plate is installed on the inner wall of the jig box and is located in the first space, and is used to press one side of the annular sealing ring against the inner wall of the jig box. The annular pressure plate is installed on the inner wall of the jig box and located in the second space, and is used to press the other side of the annular sealing ring against the inner wall of the jig box.

5. The battery fixture according to claim 4, characterized in that, The annular sealing ring includes an annular sealing portion and a first annular branch and a second annular branch connected to opposite sides of the annular sealing portion. The first annular branch has a first annular flange on the side away from the annular sealing portion, and the second annular branch has a second annular flange on the side away from the annular sealing portion. The inner pressure plate is used to press the first annular flange against the inner wall of the jig box, and the annular pressure plate is used to press the second annular flange against the inner wall of the jig box.

6. The battery fixture according to claim 4, characterized in that, A receiving space is provided between the inner pressure plate and the inner wall of the fixture box, and the partition assembly further includes a heating element installed in the receiving space.

7. The battery fixture according to claim 6, characterized in that, The partition assembly also includes an insulation component mounted on the inner pressure plate and located in the first space.

8. The battery fixture according to claim 1, characterized in that, The fixture box is also provided with a first through hole and a second through hole that are both connected to the receiving cavity. The first through hole is disposed opposite to the first electrode of the battery, and the second through hole is disposed opposite to the second electrode of the battery. The battery fixture further includes a first sealing ring and a second sealing ring. The first sealing ring is installed on the inner wall of the receiving cavity and is arranged around the first through hole. The second sealing ring is installed on the inner wall of the receiving cavity and is arranged around the second through hole.

9. The battery fixture according to claim 1, characterized in that, The battery fixture also includes a liquid injection tank, a liquid injection nozzle, and a liquid guiding connector; the liquid guiding connector is installed on the fixture box and is used to connect to the inner cavity of the battery; The injection tank is provided with a storage space for storing electrolyte, and the injection nozzle is installed on the injection tank and connected to the storage space; the injection nozzle is used to connect or disconnect the liquid guide connector.

10. The battery fixture according to claim 1, characterized in that, The first vent includes a first air inlet and a first air outlet, and the second vent includes a second air inlet and a second air outlet; Both the first air inlet and the second air inlet extend from the first side of the fixture box, and both the first air outlet and the second air outlet extend from the second side of the fixture box. The first side and the second side are opposite sides of the fixture box.

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