Liquid injection mechanism, liquid injection cup and battery jig
By designing the conductive injection nozzle and the electrodes of the liquid level sensor, the problems of space occupation by the liquid level sensor and the impact of residual electrolyte on injection accuracy are solved, achieving high-precision and low-cost electrolyte injection.
Patent Information
- Application Number
- CN202422834086.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-11-20
AI Technical Summary
In existing technologies, liquid level sensors occupy a lot of space, affecting the accuracy of liquid injection, and residual electrolyte is difficult to clean, resulting in inconvenience in liquid injection.
The electrode design of the conductive injection nozzle and liquid level sensor is adopted. The presence of electrolyte in the inner hole is detected by the energized state of the electrode, avoiding direct contact between the liquid level sensor and the electrolyte, simplifying the structure and improving the injection accuracy.
It achieves high-precision electrolyte injection, avoiding the problem of residual electrolyte affecting the injection accuracy of the liquid level sensor, while reducing manufacturing costs and cleaning difficulty.
Smart Images
Figure CN223625185U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of vehicle technology, and in particular relates to a liquid injection mechanism, a liquid injection cup and a battery fixture. Background Technology
[0002] During battery manufacturing, not only does the battery body need to be installed inside the battery casing, but electrolyte also needs to be injected into the battery casing. Typically, an injection nozzle is used to inject the electrolyte from the injection cup into the battery casing. To ensure that the electrolyte in the injection nozzle is completely injected into the battery casing, a liquid level sensor needs to be installed inside the injection nozzle. The liquid level sensor occupies a significant amount of external space in the injection cup. Furthermore, residual electrolyte on the liquid level sensor will greatly affect the injection accuracy and make cleaning the injection cup inconvenient. Summary of the Invention
[0003] The present invention aims to solve the technical problems in the prior art, such as the influence of liquid level sensors on the accuracy of liquid injection, and provides a liquid injection mechanism, a liquid injection cup, and a battery fixture.
[0004] To solve the above problems, the first embodiment of this utility model provides a liquid injection mechanism, including a liquid level sensor and a conductive injection nozzle with an inner hole. The first electrode of the liquid level sensor is electrically connected to the outer wall of the conductive injection nozzle, and the second electrode of the liquid level sensor extends into the inner hole.
[0005] The liquid level sensor detects whether there is residual electrolyte in the inner hole by checking whether the first electrode and the second electrode are energized.
[0006] Optionally, the sidewall of the conductive injection nozzle is provided with a first through hole communicating with the inner hole; the injection mechanism further includes a probe inserted into the first through hole, one end of the probe extending into the inner hole, and the other end of the probe being electrically connected to the liquid level sensor.
[0007] Optionally, the conductive injection nozzle includes a conductive base and a nozzle body detachably mounted on the conductive base, with the inner hole penetrating the conductive base and the nozzle body; the first electrode of the liquid level sensor is electrically connected to the outer wall of the conductive base.
[0008] An embodiment of this utility model also provides a liquid injection cup, including a cup body with a liquid storage space and the above-mentioned liquid injection mechanism, wherein the conductive liquid injection nozzle is installed on the cup body, and the liquid storage space is connected to the inner hole.
[0009] Optionally, the injection cup includes a first seat, a second seat with a flow guide groove, and a plurality of cups, the plurality of cups being spaced apart between the first seat and the second seat; the conductive injection nozzle is installed on the end of the second seat away from the cup, and the liquid storage space is connected to the inner hole through the flow guide groove.
[0010] Optionally, the injection cup further includes a support column and an injection connector. The support column is installed between the first base and the second base, and the injection connector is installed on the first base and communicates with the liquid storage space.
[0011] Optionally, the injection cup further includes a manifold seat with a flow channel, the manifold seat being installed between the second seat and the conductive injection nozzle, and the liquid storage space being connected to the inner hole sequentially through the flow guide groove and the flow channel.
[0012] Optionally, the liquid storage space, the flow guide groove, the confluence orifice, and the inner wall of the inner hole are all provided with a hydrophobic layer.
[0013] An embodiment of this utility model also provides a battery fixture, including a housing with a receiving space and the above-mentioned liquid injection cup; the cup is inserted into the receiving space, and the conductive liquid injection nozzle communicates with the inner cavity of the battery located in the receiving space.
[0014] Optionally, the battery fixture further includes a control board mounted on the housing, the control board being electrically connected to the liquid level sensor.
[0015] In this invention, the first electrode of the liquid level sensor is electrically connected to the outer wall of the conductive injection nozzle, and the second electrode of the liquid level sensor is inserted into the inner hole. When the second electrode contacts the electrolyte in the inner hole, the first electrode, the conductive injection nozzle, the electrolyte, the second electrode, and the liquid level sensor form a complete conductive circuit, thereby the liquid level sensor detects that a relatively large amount of electrolyte remains in the inner hole. When the second electrode does not contact the electrolyte in the inner hole, the first electrode, the conductive injection nozzle, the electrolyte, the second electrode, and the liquid level sensor do not form a complete conductive circuit, thereby the liquid level sensor detects that there is no electrolyte or only a very small amount of electrolyte remains in the inner hole. In this invention, the liquid level sensor detects whether electrolyte remains in the inner hole by checking whether the first and second electrodes are energized. The liquid level sensor does not occupy much space in the inner hole, ensuring the smoothness of the electrolyte injection mechanism into the battery. Furthermore, the liquid level sensor does not come into contact with the electrolyte, avoiding the technical problem of the liquid level sensor affecting the injection accuracy due to residual electrolyte, thus improving the injection accuracy of the injection mechanism. In addition, the injection mechanism has a simple structure and low manufacturing cost. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0017] Figure 1 This is a schematic diagram of the liquid injection mechanism provided in an embodiment of the present invention;
[0018] Figure 2 A cross-sectional view of an injection mechanism provided in an embodiment of the present utility model;
[0019] Figure 3 This is a schematic diagram of the structure of an injection cup provided in an embodiment of the present invention;
[0020] Figure 4 A cross-sectional view of an injection cup provided in an embodiment of this utility model;
[0021] Figure 5 This is a schematic diagram of the structure of an injection cup provided in an embodiment of the present invention.
[0022] The reference numerals in the accompanying drawings are as follows:
[0023] 1. Injection mechanism; 11. Conductive injection nozzle; 111. Inner hole; 112. Conductive seat; 113. Nozzle body; 12. Probe; 2. Cup body; 21. Liquid storage space; 3. First seat body; 4. Second seat body; 41. Flow guide groove; 5. Support column; 6. Injection connector; 7. Manifold seat; 71. Manifold flow hole; 8. Box body. Detailed Implementation
[0024] 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 only used to explain this utility model and are not intended to limit this utility model.
[0025] It should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of this utility model.
[0026] like Figure 1 and Figure 2 As shown in the figure, an embodiment of the present invention provides a liquid injection mechanism 1, including a liquid level sensor (not shown) and a conductive injection nozzle 11 with an inner hole 111. The first electrode of the liquid level sensor is electrically connected to the outer wall of the conductive injection nozzle 11, and the second electrode of the liquid level sensor extends into the inner hole 111. It can be understood that the conductive injection nozzle 11 can be made of stainless steel. Of the first electrode and the second electrode, one is a positive electrode and the other is a negative electrode. Preferably, the first electrode is a negative electrode and the second electrode is a negative electrode.
[0027] The liquid level sensor detects whether there is residual electrolyte in the inner hole 111 by checking whether the first electrode and the second electrode are energized.
[0028] In this invention, the first electrode of the liquid level sensor is electrically connected to the outer wall of the conductive injection nozzle 11, and the second electrode of the liquid level sensor is inserted into the inner hole 111. When the second electrode contacts the electrolyte in the inner hole 111, the first electrode, the conductive injection nozzle 11, the electrolyte, the second electrode, and the liquid level sensor form a complete conductive circuit, thereby the liquid level sensor detects that a large amount of electrolyte remains in the inner hole 111. When the second electrode does not contact the electrolyte in the inner hole 111, the first electrode, the conductive injection nozzle 11, the electrolyte, the second electrode, and the liquid level sensor do not form a complete conductive circuit, thereby the liquid level sensor detects that there is no electrolyte or only a very small amount of electrolyte remains in the inner hole 111. In this invention, the liquid level sensor detects whether electrolyte remains in the inner hole 111 by checking whether the first and second electrodes are energized. The liquid level sensor does not occupy much space in the inner hole 111, ensuring the smoothness of the electrolyte injection mechanism 1 into the battery. Furthermore, the liquid level sensor does not come into contact with the electrolyte, avoiding the technical problem of the liquid level sensor affecting the injection accuracy due to residual electrolyte, thus improving the injection accuracy of the injection mechanism. In addition, the injection mechanism 1 has a simple structure and low manufacturing cost.
[0029] In one embodiment, such as Figure 1 and Figure 2 As shown, the conductive injection nozzle 11 has a first through hole on its sidewall communicating with the inner hole 111; the injection mechanism 1 also includes a probe 12 inserted into the first through hole, one end of the probe 12 extending into the inner hole 111, and the other end of the probe 12 electrically connected to the liquid level sensor. Understandably, the probe 12 is located at the lower part of the inner hole 111, and the first electrode of the liquid level sensor is electrically connected to the sidewall of the conductive injection nozzle 11 via a wire; the second electrode of the liquid level sensor is electrically connected to the probe 12 via a wire. In this embodiment, the probe 12 is inserted into the first through hole, and the probe 12 and the conductive injection nozzle 11 are insulated from each other; the design of the probe 12 ensures the stability of the injection mechanism 1 and extends its service life.
[0030] In one embodiment, such as Figure 1 and Figure 2As shown, the conductive injection nozzle 11 includes a conductive base 112 and a nozzle body 113 detachably mounted on the conductive base 112. The inner hole 111 penetrates the conductive base 112 and the nozzle body 113. The first electrode of the liquid level sensor is electrically connected to the outer wall of the conductive base 112. Understandably, the nozzle body 113 is a tapered structure, mounted at the bottom of the conductive base 112. One end of the nozzle body 113 away from the conductive base 112 can be connected to the battery's injection port, thereby allowing the inner hole 111 to communicate with the battery's internal cavity.
[0031] like Figure 3 and Figure 4 As shown, another embodiment of this utility model also provides a liquid injection cup, including a cup body 2 with a liquid storage space 21 and the aforementioned liquid injection mechanism 1. The conductive liquid injection nozzle 11 is installed on the cup body 2, and the liquid storage space 21 communicates with the inner hole 111. Understandably, the liquid injection cup can store a large amount of electrolyte, thus enabling it to complete the battery liquid injection process. Furthermore, after battery formation, the electrolyte in the liquid storage space 21 can be used to replenish the battery. The liquid level sensor can detect whether there is sufficient electrolyte in the liquid injection cup to be injected into the battery, thereby ensuring sufficient electrolyte is injected into the battery and guaranteeing its driving range. In addition, the liquid level sensor does not leave electrolyte residue, facilitating cleaning of the liquid injection cup. Moreover, the liquid level sensor occupies little space in the cup body 2, improving the compactness of the liquid injection cup.
[0032] In one embodiment, such as Figure 3 and Figure 4 As shown, the injection cup includes a first base 3, a second base 4 with a flow guide groove 41, and a plurality of cups 2, which are spaced apart between the first base 3 and the second base 4. A conductive injection nozzle 11 is installed on the end of the second base 4 opposite to the cup 2. The liquid storage space 21 is connected to the inner hole 111 through the flow guide groove 41. Understandably, the first base 3 covers the top of all the cups 2, and the second base 4 covers the bottom of all the cups 2. The number of cups 2 can be set according to actual needs; for example, there may be two or three cups. The second base 4 has a plurality of flow guide grooves 41, each corresponding to and connected to the liquid storage space 21. The flow guide groove 41 has a conical hole structure, and its inner diameter gradually decreases from the liquid storage space 21 towards the inner hole 111.
[0033] In this embodiment, the design of multiple cups 2 allows the injection cup to store a large amount of electrolyte; the design of the flow guide groove 41 allows the electrolyte in the cup 2 to flow smoothly into the inner hole 111, further ensuring the stability of the injection cup.
[0034] In one embodiment, such as Figure 3 and Figure 4 As shown, the injection cup also includes a support column 5 and an injection connector 6. The support column 5 is installed between the first base 3 and the second base 4, and the injection connector 6 is installed on the first base 3 and communicates with the liquid storage space 21. Understandably, multiple support columns 5 can be provided according to actual needs. The support column 5 supports the first base 3 on the second base 4, and the injection connector 6 is installed on the top of the first base 3. An external liquid supply device can inject electrolyte into the liquid storage space 21 through the injection connector 6.
[0035] In one embodiment, such as Figure 3 and Figure 4 As shown, the injection cup also includes a manifold 7 with a confluence hole 71. The manifold 7 is installed between the second base 4 and the conductive injection nozzle 11. The liquid storage space 21 is connected to the inner hole 111 sequentially through the guide groove 41 and the confluence hole 71. It can be understood that the manifold 7 is installed at the bottom of the second base 4, and the conductive injection nozzle 11 is installed at the bottom of the manifold 7. Specifically, the electrolyte in the liquid storage space 21 flows into the confluence hole 71 through the guide groove 41 and then flows back into the same inner hole 111 through the confluence hole 71. In this embodiment, the injection cup provides a high degree of smoothness in injecting electrolyte into the battery.
[0036] In one embodiment, the inner walls of the liquid storage space 21, the flow guiding groove 41, the confluence orifice 71, and the inner hole 111 are all provided with a hydrophobic layer (not shown in the figure). Understandably, the design of the hydrophobic layer prevents the electrolyte from adhering to the walls of the liquid storage space 21, the flow guiding groove 41, the confluence orifice 71, and the inner hole 111.
[0037] like Figure 5As shown, another embodiment of this utility model also provides a battery fixture, including a housing 8 with a receiving space and the aforementioned electrolyte injection cup; the cup 2 is inserted into the receiving space, and the conductive electrolyte injection nozzle 11 communicates with the inner cavity of the battery located in the receiving space. It can be understood that the electrolyte injection cup can cover the receiving space from the top, and the electrolyte injection cup and the housing 8 are detachably connected; the guide electrolyte injection nozzle is aligned with the electrolyte injection port of the battery, so that the electrolyte in the electrolyte injection cup can be injected into the inner cavity of the battery.
[0038] In one embodiment, the battery fixture further includes a control board (not shown) mounted on the housing 8, which is electrically connected to the liquid level sensor. Understandably, the control board can determine whether the injection cup has injected sufficient electrolyte into the battery by checking if the liquid level sensor is energized, thus demonstrating a high degree of integration in the battery fixture.
[0039] The above are merely embodiments of the liquid injection mechanism, liquid injection cup, and battery fixture of this utility model, and are not intended to limit this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A liquid injection mechanism, characterized in that, The device includes a liquid level sensor and a conductive injection nozzle with an inner hole. The first electrode of the liquid level sensor is electrically connected to the outer wall of the conductive injection nozzle, and the second electrode of the liquid level sensor extends into the inner hole. The liquid level sensor detects whether there is residual electrolyte in the inner hole by checking whether the first electrode and the second electrode are energized.
2. The injection mechanism according to claim 1, characterized in that, The conductive injection nozzle has a first through hole on its side wall that communicates with the inner hole; the injection mechanism also includes a probe inserted into the first through hole, one end of the probe extending into the inner hole, and the other end of the probe being electrically connected to the liquid level sensor.
3. The injection mechanism according to claim 1, characterized in that, The conductive injection nozzle includes a conductive base and a nozzle body detachably mounted on the conductive base, with the inner hole penetrating the conductive base and the nozzle body; the first electrode of the liquid level sensor is electrically connected to the outer wall of the conductive base.
4. A liquid injection cup, characterized in that, The device includes a cup body with a liquid storage space and a liquid injection mechanism as described in any one of claims 1 to 3, wherein the conductive injection nozzle is mounted on the cup body and the liquid storage space communicates with the inner hole.
5. The injection cup according to claim 4, characterized in that, The liquid injection cup includes a first base, a second base with a flow guide groove, and a plurality of cups, which are spaced apart between the first base and the second base; the conductive injection nozzle is installed on the end of the second base away from the cups, and the liquid storage space is connected to the inner hole through the flow guide groove.
6. The injection cup according to claim 5, characterized in that, The injection cup also includes a support column and an injection connector. The support column is installed between the first base and the second base, and the injection connector is installed on the first base and communicates with the liquid storage space.
7. The injection cup according to claim 5, characterized in that, The injection cup also includes a manifold seat with a flow channel, which is installed between the second seat and the conductive injection nozzle. The liquid storage space is connected to the inner hole through the flow guide groove and the flow channel in sequence.
8. The injection cup according to claim 7, characterized in that, The liquid storage space, the flow guide groove, the confluence orifice, and the inner wall of the inner hole are all provided with a hydrophobic layer.
9. A battery fixture, characterized in that, It includes a housing with a receiving space and a liquid injection cup as described in any one of claims 4 to 8; the cup is inserted into the receiving space, and the conductive liquid injection nozzle communicates with the inner cavity of a battery located in the receiving space.
10. The battery fixture according to claim 9, characterized in that, The battery fixture also includes a control board mounted on the housing, which is electrically connected to the liquid level sensor.