Injected liquid temporary storage device for storage battery liquid injection

Abstract

The utility model provides an injected liquid temporary storage device for liquid injection of a storage battery. The present invention is a device for temporarily storing a liquid for injection when injecting a liquid into a storage battery, and is provided with: a storage container having an injection port at the upper end and a liquid injection port at the lower end; and a lid body which can be provided at the injection port of the storage container, the lid body having a one-way exhaust mechanism which exhausts gas in the storage container from inside the storage container to the outside of the storage container via the lid body.

Description

Technical Field

[0001] This utility model relates to a temporary storage device for storing acid during the filling of a storage battery. Background Technology

[0002] In conventional battery cell chemical conversion methods, the required amount of acid is pre-filled into the battery cells for chemical conversion. In this case, the acid injected may not penetrate the plates quickly enough and may temporarily remain above and around the plates. Furthermore, during chemical conversion, venting occurs from the plates, pushing up the acid and making it prone to overflow (backflow). Therefore, for example, Japanese Patent Application Laid-Open No. 2003-17036 discloses a method using an external reservoir to hold temporarily retained acid, thus preventing overflow even if venting occurs. However, as the size of batteries increases, the amount of acid used also increases. Although the prior art proposes using a pipe to connect the reservoir and the battery cells to supply acid and reduce the impact of venting, there is still a possibility that temporarily stored acid may be vented out when the venting volume increases. Furthermore, the aforementioned prior art also proposes to install a sealing valve to prevent external gas from entering the aforementioned storage tank, thereby avoiding contact between the acid and the outside atmosphere. However, since the sealing valve adopts a simple cap structure, when the gas discharge is too large and the pressure changes abruptly during the battery chemical conversion process, the cap will be pushed up by the pressure change and then fall off. Utility Model Content

[0003] The purpose of this invention is to provide a temporary storage device for battery filling that can both prevent acid from overflowing from the battery and injuring operators, and prevent the acid inside the battery from directly contacting the air and reducing the chemical conversion efficiency.

[0004] To address the aforementioned objectives, the first technical solution of this utility model provides a temporary storage device for battery electrolyte filling, used to temporarily store the filling liquid during battery electrolyte filling. This temporary storage device comprises: a storage container having an inlet at the upper end and a filling outlet at the lower end; and a cover disposed at the inlet of the storage container. The cover has a one-way venting mechanism that allows gas inside the storage container to escape from the storage container through the cover to the outside of the storage container. By placing the cover on the storage container and providing a one-way venting mechanism on the cover, it is possible to both prevent acid from overflowing from the battery and injuring operators through rapid venting, and also to prevent the acid inside the battery from directly contacting air, thus reducing chemical conversion efficiency, through the one-way venting function.

[0005] Based on the first technical solution described above, the second technical solution provides a temporary storage device for battery electrolyte filling, comprising a locking mechanism for locking the cover relative to the filling port. The locking mechanism includes an engaging portion disposed at the filling port of the storage container, and a engaged portion disposed at one axial end of the cover that cooperates with the engaging portion. By providing the locking mechanism, the possibility of the temporary storage device for battery electrolyte filling detaching from the battery when the internal pressure changes abruptly is avoided.

[0006] Based on the second technical solution described above, in the third technical solution's temporary storage device for battery electrolyte filling, the engaging portion includes at least two locking hooks arranged circumferentially on the injection port. The engaged portion includes a locking flange that can be screwed into the locking hooks by rotating the cover. A slope is formed on the locking hooks and / or the locking flange, which tightens the locking mechanism as the cover is screwed in. This structure ensures the locking effect and self-locking capability of the locking mechanism.

[0007] Based on the first technical solution described above, in the fourth technical solution's temporary storage device for battery electrolyte filling, the cover body has: an outer peripheral cylindrical portion; a vent portion formed by a first extension extending radially inward from one axial end of the inner wall of the outer peripheral cylindrical portion and a cylindrical second extension extending axially from the radially inward end of the first extension to the other axial end; a cap portion serving as a valve core, fitted onto the vent portion from the other axial end; and a pressing portion installed at the other axial end of the outer peripheral cylindrical portion, with a gap between the pressing portion and the cap portion. When the cap portion attempts to detach from the vent portion due to increased internal pressure in the storage container, the pressing portion applies force to the cap portion from the other axial end to prevent the cap portion from flying off. The one-way venting mechanism is composed of the vent portion, the cap portion, and the pressing portion. A specific structure of a one-way venting mechanism is provided.

[0008] Based on the fourth technical solution described above, in the fifth technical solution's temporary storage device for battery electrolyte filling, a first sealing ring is provided between the other axial end of the outer peripheral cylinder and the pressing part; and / or a second sealing ring is provided between the outer peripheral cylinder of the cover and the injection port of the storage container. By providing the first and second sealing rings, the sealing capability is improved.

[0009] Based on the first technical solution described above, the sixth technical solution provides a temporary storage device for battery electrolyte filling, wherein the storage container comprises: a container body having a liquid guiding surface formed in its inner cavity that is positioned downwards as it approaches the electrolyte inlet; and a support leg extending downwards from the lower end of the outer peripheral surface of the container body. The liquid guiding surface improves the acid injection capacity. The support leg enhances the stability of the storage container.

[0010] Based on the first technical solution described above, in the seventh technical solution's temporary storage device for battery electrolyte filling, the injection port has an overflow prevention nozzle protruding into the storage container. The overflow prevention nozzle comprises: a first extension cylinder extending downwards from the inner wall of the storage container; a connecting ring extending radially inwards from the lower end of the first extension cylinder; and a second extension cylinder extending upwards radially inwards from the connecting ring, the upper end of the second extension cylinder not protruding relative to the outer surface of the storage container. By providing the overflow prevention nozzle, the possibility of acid blown up during a large amount of venting from the battery directly contacting the cover with a one-way venting mechanism is reduced.

[0011] Based on the first technical solution described above, the eighth technical solution includes a temporary storage device for battery electrolyte filling, in which a sealing nozzle is installed at the electrolyte filling port. This improves the sealing performance between the temporary storage device and the battery.

[0012] Based on the first technical solution described above, in the ninth technical solution's temporary storage device for battery electrolyte filling, the injection port and the electrolyte filling port are coaxially arranged and offset from the horizontal center of the storage container. By making the injection port and the electrolyte filling port coaxially arranged and offset from the horizontal center of the storage container, interference between multiple temporary storage devices for battery electrolyte filling can be avoided when multiple devices are used simultaneously on the same battery.

[0013] According to the present invention, a temporary storage device for filling batteries is provided. By placing a cover on the storage container and providing a one-way venting mechanism on the cover, it is possible to prevent acid from overflowing from the battery and injuring operators through rapid venting, and also to allow the acid inside the battery to come into direct contact with air through the one-way venting function, thereby reducing the chemical conversion efficiency. Attached Figure Description

[0014] Figure 1 This is a cross-sectional schematic diagram of the temporary storage device 1 for battery electrolyte filling.

[0015] Figure 2This is a schematic diagram showing a partial cross-section of the temporary storage device 1 for battery electrolyte filling, which is installed on the battery 2.

[0016] Figure 3 This is a schematic diagram showing a battery 2 with multiple temporary storage devices 1 for battery electrolyte filling installed on it, and a partial cross-section of each temporary storage device 2 for battery electrolyte filling. Detailed Implementation

[0017] Figure 1 This is a cross-sectional schematic diagram of the temporary storage device 1 for battery electrolyte filling. Figure 2 This is a schematic diagram showing a partial cross-section of the temporary storage device 1 for battery electrolyte filling, which is installed on the battery 2. Figure 3 This is a schematic diagram showing a battery 2 with multiple temporary storage devices 1 for battery electrolyte filling installed on it, and a partial cross-section of each temporary storage device 2 for battery electrolyte filling.

[0018] like Figure 1 As shown, the temporary storage device 1 for battery electrolyte filling is a device used to temporarily store the electrolyte being filled into the battery. For simplicity, the acid solution is omitted from the diagram.

[0019] A temporary storage device 1 for battery electrolyte filling includes: a storage container 10 having an inlet 11 at the upper end and an inlet 12 at the lower end; and a cover 20 disposed at the inlet 11 of the storage container 10. The storage container 10 can be formed in two separate parts, for example, a lower container body and an upper cover, in which case the cover 20 is disposed on the upper cover. Alternatively, the storage container 10 can be formed as a single unit using methods such as blow molding.

[0020] On one hand, at the inlet 11 of the storage container 10, specifically around the inlet 11, there are at least two locking hooks 14 arranged circumferentially as engaging portions. On the other hand, at one end of the cover 20 (the end closest to the storage container 10), there are locking flanges 21 arranged circumferentially, which can be screwed into the locking hooks 14 by rotating the cover 20, serving as engaging portions. The number of locking flanges 21 corresponds to the number of locking hooks 14; that is, in this embodiment, there are two locking flanges 21 and two locking hooks 14. Thus, the locking hooks 14 and locking flanges 21, i.e., the engaging portions and the engaging portions, constitute a locking mechanism for locking and fixing the cover 20 relative to the storage container 10. Furthermore, the number of locking flanges 21 and locking hooks 14 is not particularly limited, as long as the locking requirements are met; for example, there can be three or more sets.

[0021] As a preferred configuration, the locking hook 14 and / or locking flange 21 may have a sloped surface that tightens the locking mechanism as the cover is screwed in. In addition to the sloped surface, the locking hook 14 and / or locking flange 21 may also have protrusions and recesses for preventing detachment, thus preventing the cover 20 from falling off the storage container 10.

[0022] The locking mechanisms described above are just examples; other forms of self-locking structures can also be used. By incorporating such structures, the locking effect and self-locking capability of the locking mechanism can be ensured.

[0023] The following is an explanation of the one-way exhaust mechanism.

[0024] The cover 20 includes: an outer cylindrical portion 22; a vent portion 23 consisting of a first extension 24 extending radially inward from one axial end (lower end in the figure) of the inner wall of the outer cylindrical portion 22, and a cylindrical second extension 25 extending axially from the radially inner end of the first extension 24 to the other axial end (upper end in the figure); a cap portion 26 serving as a valve core, fitted onto the vent portion 23 from the other axial end (upper end in the figure); and a pressing portion 27 mounted on the other axial end (upper end in the figure) of the outer cylindrical portion 22, with a gap between the pressing portion 27 and the cap portion 26. When the cap portion 26 attempts to detach from the vent portion 23 due to the increased internal pressure of the storage container 10, the pressing portion 27 applies force to the cap portion 26 from the other axial end side (upper side in the figure) to prevent the cap portion 26 from flying off. The vent portion, the cap portion, and the pressing portion constitute a one-way venting mechanism. In this embodiment, as an example, the pressing part 27 is an elastic pressure plate, which can be made of a metal sheet that is elastic in itself, or a resin sheet with high hardness and a certain elastic deformation capability. Because a one-way venting mechanism is provided on the cover, it is possible to prevent acid from overflowing from the battery and injuring the operator through rapid venting, and also to allow the acid inside the battery to come into direct contact with air through the one-way venting function, thereby reducing the chemical conversion efficiency.

[0025] As an example, in the cover 20, the outer peripheral cylinder 22 and the vent hole can be molded in one piece, but it is not limited to this. They can also be made separately and then assembled together by interference fit.

[0026] A first sealing ring 31 is provided between the other axial end of the outer peripheral cylindrical portion 23 and the pressing portion, and a second sealing ring 32 is provided between the outer peripheral cylindrical portion 23 of the cover 202 and the injection port 11 of the storage container 10. By providing the first and second sealing rings 31 and 32, the sealing capability is improved.

[0027] like Figure 1 , 2 As shown, the storage container 10 includes: a container body 18, which has a liquid guiding surface 17 formed in its inner cavity that is positioned downwards towards the injection port 12; and a support leg 19 extending downwards from the lower end of the outer peripheral surface of the container body 18. The liquid guiding surface 17 improves the acid injection capacity. By providing the support leg 19, as... Figure 2 As shown, when the temporary storage device 1 for filling the battery (specifically, the storage container 10) is installed on the battery 2, the stability of the storage container 10 is improved.

[0028] like Figure 1 As shown, the inlet 11 has an overflow prevention nozzle 15 protruding into the storage container. The overflow prevention nozzle 15 has: a first extension tube 151 extending downward from the inner wall of the storage container 10; a connecting ring 152 extending radially inward from the lower end of the first extension tube 151; and a second extension tube 153 extending radially upward from the inner side of the connecting ring 152, the upper end of the second extension tube 153 not protruding relative to the outer surface of the storage container 10. By providing the overflow prevention nozzle 15, the possibility of acid blown up during a large amount of venting from the battery 2 directly contacting the cover 10 with the one-way venting mechanism is reduced.

[0029] like Figure 1-3 As shown, a sealing nozzle 15 is installed at the injection port 12. This improves the sealing between the temporary storage device 1 for battery injection and the battery 2.

[0030] In addition, such as Figure 1 As shown, the injection port 11 and the liquid filling port 12 are coaxially arranged and eccentrically positioned relative to the horizontal center of the storage container 10. Figure 2-3 As shown, the battery 2 has positive and negative terminals 41 and 42, and multiple filling ports 43 located between the positive and negative terminals 41 and 42. When multiple temporary storage devices 1 for battery filling are respectively provided on the multiple filling ports provided on the battery 2, the multiple temporary storage devices for battery filling can be staggered to avoid interference between the multiple temporary storage devices for battery filling.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not 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.

Claims

1. A temporary storage device for electrolyte filling in a storage battery, used to temporarily store the liquid to be injected during electrolyte filling in a storage battery (2), characterized in that, The temporary storage device (1) for battery electrolyte filling includes: Storage container (10), which has an inlet (11) at the upper end and a liquid inlet (12) at the lower end; and A cover (20) that can be disposed at the inlet (11) of the storage container (10). The cover (20) has a one-way exhaust mechanism that allows gas inside the storage container (10) to be discharged from the storage container (10) through the cover (20) to the outside of the storage container (10).

2. The temporary storage device for battery electrolyte filling according to claim 1, characterized in that, It has a locking mechanism for locking the cover (20) relative to the injection port (11). The locking mechanism includes: a locking part disposed at the injection port (11) of the storage container (10); and a locking part disposed at one axial end of the cover (20) that cooperates with the locking part.

3. The temporary storage device for battery electrolyte filling according to claim 2, characterized in that, The engaging portion includes at least two locking hooks (14) arranged circumferentially on the injection port (11). The engaging portion includes a locking flange (21) that can be screwed into the locking hook (14) by rotation of the cover (20). A slope is formed on the locking hook (14) and / or the locking flange (21) such that the locking mechanism tightens as the cover (20) is screwed in.

4. The temporary storage device for battery electrolyte filling according to claim 1, characterized in that, The cover (20) has: Peripheral barrel (22); A vent portion (23) is formed by a first extension portion (24) extending radially inward from one axial end of the inner wall of the outer peripheral cylindrical portion (22) near the cover body (20), and a cylindrical second extension portion (25) extending axially from the radial inner end of the first extension portion (24) to the other axial end. A cap (26) serving as a valve core, fitted onto the vent (23) from the other end of the axial direction; and A pressing part (27) is installed at the other axial end of the outer peripheral cylindrical part (22). There is a gap between the pressing part (27) and the cap part (26). When the cap part (26) tries to detach from the vent part (23) due to the increase in internal pressure of the storage container (10), the pressing part (27) applies force to the cap part (26) from the other axial end to prevent the cap part (26) from flying off. The one-way exhaust mechanism is composed of the vent (23), the cap (26), and the pressing part (27).

5. The temporary storage device for battery electrolyte filling according to claim 4, characterized in that, A first sealing ring (31) is provided between the other axial end of the outer peripheral cylindrical portion (22) and the pressing portion (27); and / or A second sealing ring (32) is provided between the outer peripheral cylindrical part (22) of the cover (20) and the injection port (11) of the storage container (10).

6. The temporary storage device for battery electrolyte filling according to claim 1, characterized in that, The storage container (10) has: The container body (18) has a liquid guide surface (17) in its inner cavity that is positioned downwards as it approaches the injection port; and Support legs (19) extending downward from the lower end of the outer periphery of the container body (18).

7. The temporary storage device for battery electrolyte filling according to claim 1, characterized in that, The inlet (11) has an overflow prevention nozzle (15) that protrudes into the storage container (10). The overflow prevention nozzle (15) has: A first extension tube (151) extends downward from the inner wall of the storage container (10). A connecting ring (152) extending radially inward from the lower end of the first extension tube (151); and A second extension tube (153) extends upward from the radially inner side of the connecting ring (152). The upper end of the second extension tube (153) does not protrude relative to the outer surface of the storage container (10).

8. The temporary storage device for battery electrolyte filling according to claim 1, characterized in that, A sealing nozzle (13) is installed at the injection port (12).

9. The temporary storage device for battery electrolyte filling according to claim 1, characterized in that, The injection port (11) and the liquid injection port (12) are coaxially arranged and eccentrically arranged relative to the horizontal center of the storage container (10).

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