Liquid injection auxiliary tool of battery
By using electrolyte bags and guide tubes as auxiliary tooling during battery formation, the problem of insufficient electrolyte content after battery formation is solved, and the battery sealing is improved with ease and performance enhancement when replenishing electrolyte.
Patent Information
- Application Number
- CN202520009955.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-02
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-01-02
AI Technical Summary
In existing technologies, the electrolyte content decreases after battery formation, leading to reduced battery performance. Furthermore, the process of replenishing the electrolyte is difficult and can easily cause the electrolyte to come into contact with air, further reducing performance.
Design a battery electrolyte injection auxiliary tooling, which places an electrolyte bag inside a gas bag. After formation, the electrolyte bag releases electrolyte to replenish the electrolyte in the battery, maintaining the battery's airtightness. The electrolyte is guided into the battery through a guide tube. The electrolyte formula can be adjusted to improve performance.
Replenishing the electrolyte consumed during formation while ensuring battery sealing increases the electrolyte content within the battery, simplifies operation, prevents electrolyte from contacting air, and improves battery performance.
Smart Images
Figure CN223884607U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a battery field especially is related to a battery's injection auxiliary frock. BACKGROUND
[0002] The battery consumes certain electrolyte when forming, makes the electrolyte content in the battery reduce, reduces the performance of the battery. Since the battery has been sealed before forming, the process of secondary injection of the battery is more difficult. In the related art, when supplementing the liquid to the battery, not only the seal of the battery needs to be broken, but also the operation is difficult, and the electrolyte of the battery can contact with the water vapor in the air, thereby reducing the performance of the battery. Therefore, there is room for improvement. SUMMARY
[0003] The utility model discloses at least one of the technical problems in the prior art. To this end, one purpose of the utility model is to provide a battery's injection auxiliary frock, by making electrolyte bag be placed in the gas bag, can make the battery after forming, the electrolyte bag releases the electrolyte to supplement the electrolyte in the battery, does not need to break the seal of the battery, supplements the electrolyte consumed in the case where guaranteeing the sealability of the battery after forming, makes the electrolyte content in the battery sufficient, improves the battery performance, and the electrolyte formula of supplementing can be different from the electrolyte before forming to adjust the electrolyte formula in the battery finally to improve the performance of the battery.
[0004] The battery's injection auxiliary frock according to the utility model embodiment, including: gas bag, the gas bag is suitable for connecting in one side of the battery and is used for buffering the gas generated in the forming process of the battery, electrolyte bag, the electrolyte bag is stored with electrolyte and is placed in the gas bag, the electrolyte bag can release the electrolyte, and the electrolyte is supplemented in the battery.
[0005] The battery's injection auxiliary frock according to the utility model embodiment, by making electrolyte bag be placed in the gas bag, can make the battery after forming, the electrolyte bag releases the electrolyte to supplement the electrolyte in the battery, does not need to break the seal of the battery, supplements the electrolyte consumed in the case where guaranteeing the sealability of the battery after forming, makes the electrolyte content in the battery sufficient, improves the battery performance, and the electrolyte formula of supplementing can be different from the electrolyte before forming to adjust the electrolyte formula in the battery finally to improve the performance of the battery.
[0006] According to some embodiments of the utility model, the electrolyte bag is fixedly connected with the gas bag.
[0007] According to some embodiments of the present application, the electrolyte bag comprises a containing part and a fixing part, the containing part has a containing cavity for storing the electrolyte, and the fixing part is connected to one side of the containing part and fixed to the air bag by a hot melting method.
[0008] According to some embodiments of the present application, the air bag is adapted to be connected to one side of the battery along a first direction, the distance between the electrolyte bag and the battery in the first direction is d, the width of the air bag in the first direction is W1, and the ratio of d to W1 is greater than 1 / 5.
[0009] According to some embodiments of the present application, the air bag is adapted to be connected to one side of the battery along a first direction, the width of the air bag in the first direction is W1, the length of the air bag in a second direction is L1, the second direction is perpendicular to the first direction, the width of the electrolyte bag in the first direction is W2, the length of the electrolyte bag in the second direction is L2, the ratio of W2 to W1 ranges from 0.2 to 0.7, and the ratio of L2 to L1 ranges from 0.2 to 0.7.
[0010] According to some embodiments of the present application, the electrolyte bag has a weak part, and the electrolyte bag is adapted to release electrolyte at the weak part.
[0011] According to some embodiments of the present application, the weak part is formed with a notch.
[0012] According to some embodiments of the present application, a flow guide pipe is provided, one end of the flow guide pipe is connected to the electrolyte bag, the other end of the flow guide pipe is connected to the battery, and the flow guide pipe is used to guide the electrolyte in the electrolyte bag into the battery.
[0013] According to some embodiments of the present application, the electrolyte bag has a weak part, the electrolyte bag is adapted to release electrolyte at the weak part, and the weak part is opposite to the pipe opening of the flow guide pipe.
[0014] According to some embodiments of the present application, the other end of the flow guide pipe is adapted to be connected to the upper part of the battery.
[0015] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0016] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
[0017] Figure 1is an assembly view of the battery using the liquid injection auxiliary tool according to some embodiments of the present application.
[0018] Figure 2 is Figure 1 the battery assembled by the liquid injection auxiliary tool used in the battery according to some embodiments of the present application.
[0019] Figure 3 is an assembly view of another battery using the liquid injection auxiliary tool according to some embodiments of the present application.
[0020] Figure 4 is Figure 3 the battery assembled by the liquid injection auxiliary tool used in the battery according to some embodiments of the present application.
[0021] Reference Signs:
[0022] 100, liquid injection auxiliary tool;
[0023] 10, gas bag;
[0024] 20, electrolyte bag; 21, containing part; 22, fixing part; 23, containing cavity; 24, weak part; 25, notch;
[0025] 30, flow guide pipe;
[0026] 40, battery; 41, shell; 42, electrode assembly; 43, tab. DETAILED DESCRIPTION
[0027] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.
[0028] The liquid injection auxiliary tool 100 of the battery 40 according to embodiments of the present application is described below with reference to Figures 1-4
[0029] The liquid injection auxiliary tool 100 of the battery 40 according to embodiments of the present application, with reference to Figures 1-4 , comprises a gas bag 10 and an electrolyte bag 20.
[0030] The gas bag 10 is adapted to be connected to one side of the battery 40 and used to buffer the gas generated in the formation process of the battery 40. By using the liquid injection auxiliary tool 100 for the battery 40 comprising the gas bag 10, the gas generated in the formation process of the battery 40 can be discharged into the gas bag 10, and the risk of excessive pressure in the battery 40 is avoided under the condition of ensuring the sealing of the battery 40.
[0031] For example, the battery 40 can include a shell 41, which can be an aluminum plastic film, an electrode assembly 42 disposed in the shell 41, and a tab 43 connected to the electrode assembly 42 and partially located outside the shell 41. The tab 43 of the battery 40 can be disposed on the same side of the battery 40 or on the opposite side of the battery 40.
[0032] For example, the battery 40 can be a soft-pack battery 40, and the shell 41 of the battery 40 and the shell 41 of the air bag 10 are both aluminum plastic films and are integrally formed. Before the battery 40 is formed, the periphery of the aluminum plastic film is sealed to ensure the sealing of the battery 40.
[0033] The electrolyte bag 20 stores electrolyte and is placed in the air bag 10. The electrolyte bag 20 can release electrolyte to supplement the electrolyte in the battery 40. By allowing the electrolyte bag 20 to release electrolyte to supplement the electrolyte in the battery 40, the amount of electrolyte in the battery 40 can be increased, and the performance of the battery 40 can be improved. By placing the electrolyte in the air bag 10, the process of supplementing the electrolyte in the battery 40 can be simple and convenient without breaking the seal of the battery 40, and the battery 40 can always be in a sealed state to avoid contact between the electrolyte and water vapor in the air when the electrolyte is injected.
[0034] According to the embodiments of the utility model, the injection auxiliary tool 100 for the battery 40 is provided with the air bag 10 in which the electrolyte bag 20 is placed. After the battery 40 is formed, the electrolyte bag 20 releases electrolyte to supplement the electrolyte in the battery 40 without breaking the seal of the battery 40. The electrolyte consumed during the formation of the battery 40 is supplemented while ensuring the sealing of the battery 40 after the formation, so that the content of electrolyte in the battery 40 is sufficient, and the performance of the battery 40 is improved. At the same time, the supplemented electrolyte formula can be different from the electrolyte before the formation to adjust the electrolyte formula in the battery to improve the performance of the battery.
[0035] According to some embodiments of the utility model, referring to Figures 1-4 The electrolyte bag 20 is fixedly connected to the air bag 10. By fixedly connecting the electrolyte bag 20 to the air bag 10, the electrolyte bag 20 can be prevented from moving in the air bag 10.
[0036] According to some embodiments of the utility model, referring to Figures 1-4The electrolyte bag 20 comprises a containing part 21 and a fixing part 22, the containing part 21 is internally provided with a containing cavity 23 for storing electrolyte, and the fixing part 22 is connected to one side of the containing part 21 and is fixed to the air bag 10 by means of hot melting. By making the electrolyte bag 20 comprise the containing part 21 and the fixing part 22, electrolyte leakage caused by the electrolyte bag 20 being broken during the process of fixing the electrolyte bag 20 to the air bag 10 can be avoided; by making the fixing part 22 of the electrolyte bag 20 be fixed to the air bag 10 by means of hot melting, the connection between the electrolyte bag 20 and the air bag 10 can be more convenient and stable.
[0037] According to some embodiments of the present application, referring to Figure 1 and Figure 3 , the air bag 10 is adapted to be connected to one side of the battery 40 along a first direction (for example, the e1 direction in the drawings), the distance between the electrolyte bag 20 and the battery 40 in the first direction is d, the width of the air bag 10 in the first direction is W1, and the ratio of d to W1 is greater than 1 / 5. For example, the ratio of d to W1 can be 1 / 4, 1 / 3, 1 / 2, etc. By making the ratio of d to W1 greater than 1 / 5, the air exchange between the battery 40 and the air bag 10 can be smooth enough, and the risk of the battery 40 being overcharged can be more fully avoided.
[0038] According to some embodiments of the present application, referring to Figure 1 and Figure 3 , the air bag 10 is adapted to be connected to one side of the battery 40 along a first direction, the width of the air bag 10 in the first direction is W1, the length of the air bag 10 in a second direction (for example, the e2 direction in the drawings) is L1, the second direction is perpendicular to the first direction, the width of the electrolyte bag 20 in the first direction is W2, the length of the electrolyte bag 20 in the second direction is L2, the ratio of W2 to W1 ranges from 0.2 to 0.7, and the ratio of L2 to L1 ranges from 0.2 to 0.7. For example, the ratio of W2 to W1 can be 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, etc., and the ratio of L2 to L1 can be 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, etc. By making the ratio of W2 to W1 not less than 0.2, the width of the electrolyte bag 20 in the first direction can be long enough, and the electrolyte stored in the electrolyte bag 20 can be sufficient; by making the ratio of W2 to W1 not greater than 0.7, the space in the air bag 10 for containing gas can be sufficient, and the risk of the electrolyte bag 20 occupying too much space in the air bag 10 and reducing the amount of gas contained in the air bag 10 can be avoided. By making the ratio of L2 to L1 not less than 0.2, the length of the electrolyte bag 20 in the second direction can be long enough, and the electrolyte stored in the electrolyte bag 20 can be sufficient; by making the ratio of L2 to L1 not greater than 0.7, the space in the air bag 10 for containing gas can be sufficient, and the risk of the electrolyte bag 20 occupying too much space in the air bag 10 and reducing the amount of gas contained in the air bag 10 can be avoided.
[0039] According to some embodiments of the present application, referring to Figure 1 and Figure 3 The electrolyte bag 20 has a weak portion 24, and the electrolyte bag 20 is adapted to release electrolyte at the weak portion 24. By making the electrolyte bag 20 have the weak portion 24, the electrolyte bag 20 is adapted to release electrolyte at the weak portion 24, so that the electrolyte bag 20 can be easily broken at the weak portion 24 to release the electrolyte contained in the electrolyte bag 20.
[0040] According to some embodiments of the present application, referring to Figure 1 and Figure 3 The weak portion 24 is formed with a notch 25. By making the weak portion 24 formed with the notch 25, the weak portion 24 can be easily broken.
[0041] For example, the electrolyte bag 20 has a weak portion 24, and the weak portion 24 is formed with a notch 25. During the formation of the battery 40, the electrolyte bag 20 is sealed; when the formation of the battery 40 is completed and electrolyte needs to be supplemented, the notch 25 of the electrolyte bag 20 is broken by external pressure, and the electrolyte in the electrolyte bag 20 is released and flows into the battery 40.
[0042] According to some embodiments of the present application, referring to Figures 1-4 The liquid injection auxiliary tool 100 includes a flow guide pipe 30, one end of the flow guide pipe 30 is connected with the electrolyte bag 20, and the other end of the flow guide pipe 30 is connected with the battery 40. The flow guide pipe 30 is used to guide the electrolyte in the electrolyte bag 20 to flow into the battery 40. After the electrolyte bag 20 finishes supplementing the electrolyte to the battery 40, the battery 40 usually needs to be cut and separated from the gas bag 10, and then the cutting part needs to be sealed. If there is a lot of electrolyte at the connection between the gas bag 10 and the battery 40, it may cause the electrolyte in the battery 40 to leak due to poor sealing. By making one end of the flow guide pipe 30 connected with the electrolyte bag 20 and the other end connected with the battery 40, the content of the electrolyte remaining at the connection between the gas bag 10 and the battery 40 can be reduced, and the problem of poor sealing after cutting the battery 40 from the gas bag 10 can be avoided. In addition, the electrolyte released from the electrolyte bag 20 can flow into the battery 40 through the flow guide pipe 30, and the flow guide pipe 30 can guide the electrolyte and reduce the waste caused by the electrolyte remaining in the gas bag 10.
[0043] According to some embodiments of the present application, referring to Figure 1 and Figure 3The electrolyte bag 20 has a weak portion 24, the electrolyte bag 20 is adapted to release electrolyte at the position of the weak portion 24, and the weak portion 24 is opposite to the pipe orifice of the flow guide pipe 30. By making the electrolyte bag 20 have the weak portion 24, the electrolyte bag 20 is adapted to release electrolyte at the position of the weak portion 24, the electrolyte bag 20 can be broken more easily at the weak portion 24 to release the electrolyte contained in the electrolyte bag 20; by making the weak portion 24 opposite to the pipe orifice of the flow guide pipe 30, the electrolyte released by the electrolyte bag 20 can flow into the battery 40 through the flow guide pipe 30, and the flow guide pipe 30 plays a guiding role on the electrolyte and reduces the waste caused by the residual electrolyte in the air bag 10.
[0044] According to some embodiments of the present application, referring to Figure 1 and Figure 3 the other end of the flow guide pipe 30 is adapted to be connected with the upper part of the battery 40. By making the other end of the flow guide pipe 30 adapted to be connected with the upper part of the battery 40, the electrolyte flows downward to the lower part of the battery 40 under its own gravity, so that the electrolyte can be more evenly soaked into the pole group in the battery 40.
[0045] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0046] In the description of the present application, "first feature" and "second feature" can include one or more features.
[0047] In the description of the present application, "a plurality of" means two or more.
[0048] In the description of the present application, "above" or "below" of the first feature to the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them.
[0049] In the description of the present application, "above", "above" and "above" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature.
[0050] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0051] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.
Claims
1. A liquid injection assisting tool for a battery, characterized by comprising: The application relates to a battery, which comprises: a gas bag adapted to be connected to one side of the battery and used for buffering the gas generated by the battery during formation; an electrolyte bag in which electrolyte is stored and placed in the gas bag, and the electrolyte bag can release electrolyte to supplement the electrolyte in the battery.
2. The injection assisting tool for a battery according to claim 1, wherein The electrolyte bag is fixedly connected to the gas bag.
3. The injection assisting tool for a battery according to claim 2, wherein The electrolyte bag comprises a containing part and a fixing part, the containing part has a containing cavity for storing the electrolyte, and the fixing part is connected to one side of the containing part and is fixed to the gas bag by a hot melting method.
4. The injection assisting tool for a battery according to claim 2, wherein The gas bag is adapted to be connected to one side of the battery along a first direction, the distance between the electrolyte bag and the battery along the first direction is d, the width of the gas bag along the first direction is W1, and the ratio of d to W1 is greater than 1 / 5.
5. The injection assisting tool for a battery according to claim 2, wherein The gas bag is adapted to be connected to one side of the battery along a first direction, the width of the gas bag along the first direction is W1, the length of the gas bag along a second direction is L1, the second direction is perpendicular to the first direction, the width of the electrolyte bag along the first direction is W2, the length of the electrolyte bag along the second direction is L2, the ratio of W2 to W1 ranges from 0.2 to 0.7, and the ratio of L2 to L1 ranges from 0.2 to 0.
7.
6. The injection assisting tool for a battery according to claim 1, wherein The electrolyte bag has a weak part, and the electrolyte bag is adapted to release electrolyte at the position of the weak part.
7. The injection assisting tool for a battery according to claim 6, wherein The weak part is formed with a notch.
8. The injection assisting tool for a battery according to claim 1, wherein The application further relates to a battery, which comprises a flow guide pipe, one end of the flow guide pipe is connected to the electrolyte bag, the other end of the flow guide pipe is connected to the battery, and the flow guide pipe is used for guiding the electrolyte in the electrolyte bag to the battery.
9. The injection assisting tool for a battery according to claim 8, wherein The electrolyte bag has a weak part, and the electrolyte bag is adapted to release electrolyte at the position of the weak part, and the weak part is opposite to the pipe opening of the flow guide pipe.
10. The injection assisting tool for a battery according to claim 8, wherein The other end of the flow guide pipe is adapted to be connected to the upper part of the battery.