Sealing structure for battery electrolyte injection hole, battery, battery pack, and electric device

Abstract

A sealing structure for a battery electrolyte injection hole, a battery, a battery pack, and an electric device. The sealing structure for a battery electrolyte injection hole is used for sealing an electrolyte injection hole, and comprises a mounting member and a sealing member; the mounting member is provided with a mounting slot and provided with an opening and an electrolyte injection channel; the opening and the electrolyte injection channel are separately communicated with the mounting slot; the sealing member is provided with a sealing portion, and the sealing portion is inserted into the mounting slot from the opening and is in sealing fit with the mounting slot.

Description

Battery electrolyte injection hole sealing structure, battery, battery pack and electric equipment

[0001] Cross-reference to related applications

[0002] The present disclosure claims priority to the Chinese patent application No. 202411091457.8, filed on August 8, 2024, and entitled "Battery electrolyte injection hole sealing structure, battery, battery pack and electric equipment", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of batteries, in particular, to a battery electrolyte injection hole sealing structure, a battery, a battery pack and an electric equipment. BACKGROUND

[0004] In order to facilitate the injection of electrolyte into the battery, an electrolyte injection hole structure is punched on the shell of the battery. Currently, in order to improve the volume energy density of the battery, the thickness of the battery shell is becoming thinner, which results in that the electrolyte injection hole structure punched is also thinner, and the sealing effect of the sealing member installed in the electrolyte injection hole cannot be guaranteed. SUMMARY

[0005] The purpose of the present disclosure is to provide a battery electrolyte injection hole sealing structure, a battery, a battery pack and an electric equipment, which can guarantee the sealing effect of the sealing member on the electrolyte injection hole.

[0006] In order to achieve the above-mentioned purpose, according to a first aspect of the present disclosure, a battery electrolyte injection hole sealing structure is provided, which is used for sealing an electrolyte injection hole and comprises: a mounting member, which is adapted to be installed in the electrolyte injection hole, the mounting member is formed with a mounting groove, and the mounting member is provided with an opening and an electrolyte injection channel, the opening and the electrolyte injection channel are respectively communicated with the mounting groove; and a sealing member, part of the sealing member is inserted into the mounting groove from the opening, and the sealing member is sealingly matched with the mounting groove.

[0007] Optionally, the sealing member comprises a sealing portion and a boss, the boss covers the opening, the sealing portion is adapted to be inserted into the mounting groove, and the sealing portion is tightly matched with the groove wall of the mounting groove.

[0008] Optionally, the sealing portion is connected to the boss and is configured in a ring cylinder shape, and the cylinder mouth of the sealing portion gradually expands from the boss.

[0009] Optionally, the sealing member further comprises a sealing ring, the sealing ring is sleeved on the sealing portion and is compressed between the boss and the mounting member, so as to seal the opening.

[0010] Optionally, the mounting groove comprises a guide wall, an extension wall, a connecting wall and a pressing wall connected in sequence, the guide wall is connected with the channel opening of the liquid injection channel, the extension wall extends from the guide wall away from the liquid injection channel, the pressing wall is opposite to the extension wall, and the pressing wall is connected with the extension wall through the connecting wall, the guide wall is used for guiding the sealing part to extend into the mounting groove and tightly fit with the pressing wall.

[0011] Optionally, the mounting member has a bottom wall, the extension wall extends from the guide wall towards the opening, and an included angle is formed between the extension wall and the bottom wall.

[0012] Optionally, the mounting member has a bottom wall, the pressing wall extends from the connecting wall towards the guide wall along a first direction, and the length of the pressing wall in the first direction is greater than or equal to 1 mm.

[0013] According to a second aspect of the present disclosure, a battery is provided, comprising a housing and the above-mentioned battery liquid injection hole sealing structure, the housing is formed with the liquid injection hole, the mounting member is arranged in the housing, and the sealing part passes through the liquid injection hole and sealingly fits with the mounting groove to seal the liquid injection hole.

[0014] Optionally, the battery further comprises a support frame arranged in the housing and provided with a mounting table and a through hole, the mounting member is fixed to the mounting table, and the through hole is communicated with the liquid injection channel and arranged on a side of the liquid injection channel away from the housing.

[0015] Optionally, the battery further comprises two pole post assemblies, the two pole post assemblies are respectively arranged at two ends of the housing along the length direction, and the liquid injection hole is arranged on one side of one of the pole post assemblies.

[0016] Optionally, the battery further comprises an isolation seat arranged in the housing, the support frame and the isolation seat are connected through a plug-in structure, the plug-in structure comprises a plug-in block and a plug-in groove matched with each other, one of the support frame and the isolation seat is provided with the plug-in block, and the other is provided with the plug-in groove.

[0017] Optionally, the support frame is provided with the plug-in block, the isolation seat is provided with the plug-in groove, and a gap is formed between the isolation seat and the housing, the plug-in block is plugged into the plug-in groove and attached to the housing.

[0018] According to a third aspect of the present disclosure, a battery pack is provided, comprising the above-mentioned battery.

[0019] According to a fourth aspect of the present disclosure, a power consuming device is provided, which comprises the battery or the battery pack described above.

[0020] By means of the technical scheme described above, in the battery liquid injection hole sealing structure provided by the present disclosure, the sealing member can be inserted into the mounting groove from the opening, and the sealing member is in sealing cooperation with the mounting groove, and the opening and the liquid injection channel are respectively communicated with the mounting groove, so that the sealing member can seal the opening, the liquid injection channel and the mounting groove, wherein, in order to facilitate the injection of electrolyte, the liquid injection channel needs to be communicated with the liquid injection hole, so that the sealing member can also seal the liquid injection hole. In addition, by arranging the mounting member and inserting the sealing member into the mounting groove of the mounting member, the sealing effect of the sealing member can be ensured.

[0021] Other features and advantages of the present disclosure will be described in detail in the following specific embodiment part. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings are included to provide a further understanding of the present disclosure, and constitute a part of the specification, and are used together with the following specific embodiments to explain the present disclosure, but do not constitute a limitation on the present disclosure. In the drawings:

[0023] Fig. 1 is a structural schematic view of a sealing member provided by an exemplary embodiment of the present disclosure;

[0024] Fig. 2 is a sectional view of a support frame and a mounting member provided by an exemplary embodiment of the present disclosure;

[0025] Fig. 3 is an enlarged view of A in Fig. 2;

[0026] Fig. 4 is a perspective view of a support frame and a mounting member provided by an exemplary embodiment of the present disclosure;

[0027] Fig. 5 is a perspective view of a battery provided by an exemplary embodiment of the present disclosure;

[0028] Fig. 6 is a top view of a battery provided by an exemplary embodiment of the present disclosure;

[0029] Fig. 7 is an enlarged view of B in Fig. 6;

[0030] Fig. 8 is a side sectional view of a battery provided by an exemplary embodiment of the present disclosure;

[0031] Fig. 9 is an enlarged view of C in Fig. 8;

[0032] Fig. 10 is an assembly schematic view of a support frame and a pole assembly provided by an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0033] The specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended for explanation and interpretation of the present disclosure and are not intended to limit the present disclosure.

[0034] In the present disclosure, the orientation words such as "inner" and "outer" are used in the sense of "inner" and "outer" with respect to the self outline of the corresponding component, "first direction" refers to the L1 direction in the drawings, and "second direction" refers to the L2 direction in the drawings. In addition, the terms "first", "second", and the like used in the present disclosure are used to distinguish one element from another element, and do not have sequential and important meanings. Furthermore, in the following description, when referring to the drawings, the same reference numerals in different drawings represent the same or similar elements, unless otherwise explained. The above definitions are only used to explain and illustrate the present disclosure, and should not be understood as limiting the present disclosure.

[0035] According to a first aspect of the present disclosure, referring to FIGS. 1-3 and 9, a battery electrolyte injection hole sealing structure 100 is provided for sealing an electrolyte injection hole 210, and comprises: a mounting piece 110 adapted to be mounted in the electrolyte injection hole 210, the mounting piece 110 is formed with a mounting groove 112, and the mounting piece 110 is provided with an opening 113 and an electrolyte injection passage 111, the opening 113 and the electrolyte injection passage 111 are respectively communicated with the mounting groove 112; and a sealing piece 120, part of the sealing piece 120 is inserted into the mounting groove 112 from the opening 113, and the sealing piece 120 is sealingly fitted with the mounting groove 112.

[0036] Through the above technical solution, in the battery electrolyte injection hole sealing structure 100 provided by the present disclosure, the sealing piece 120 can be inserted into the mounting groove 112 from the opening 113, and the sealing piece 120 is sealingly fitted with the mounting groove 112, the opening 113 and the electrolyte injection passage 111 are respectively communicated with the mounting groove 112, so that the sealing piece 120 can play a sealing role on the opening 113, the electrolyte injection passage 111 and the mounting groove 112, wherein in order to facilitate the injection of electrolyte, the electrolyte injection passage 111 needs to be communicated with the electrolyte injection hole 210, so that the sealing piece 120 can also play a role of sealing the electrolyte injection hole 210. In addition, by providing the mounting piece 110 and inserting the sealing piece 120 into the mounting groove 112 of the mounting piece 110, the sealing effect of the sealing piece 120 can be ensured.

[0037] In the battery liquid injection hole sealing structure 100 provided by the present disclosure, the sealing member 120 can be configured in any suitable manner. As an exemplary embodiment, referring to FIG. 1 and FIG. 9, the sealing member 120 can include a sealing portion 121 and a boss 122. The boss 122 can cover the opening 113, and the sealing portion 121 can be adapted to be inserted into the installation groove 112 and tightly fit with the groove wall of the installation groove 112. In this way, the sealing portion 121 can be inserted into the installation groove 112 from the opening 113 to seal the installation groove 112, and the boss 122 covers the opening 113 to ensure that the sealing member 120 completely seals the opening 113, thereby ensuring the sealing effect of the sealing member 120.

[0038] In the battery liquid injection hole sealing structure 100 provided by the present disclosure, the sealing portion 121 can be configured in any suitable manner. As an exemplary embodiment, referring to FIG. 1 and FIG. 9, the sealing portion 121 can be connected to the boss 122 and configured as a ring cylinder, and the cylinder opening of the sealing portion 121 can gradually expand from the boss 122. The installation groove 112 can also be configured as a ring that is adapted to the sealing portion 121. In this way, when the sealing member 120 is sealed and installed in the installation groove 112, the sealing portion 121 can be arranged around the liquid injection channel 111, and the sealing portion 121 is tightly pressed in the installation groove 112. In addition, the sealing portion 121 is configured as a ring cylinder, which can ensure that the sealing portion 121 surrounds the liquid injection channel 111 to prevent dead angles and affect the sealing effect of the sealing member 120.

[0039] In the battery liquid injection hole sealing structure 100 provided by the present disclosure, in order to further ensure the sealing effect of the sealing member 120 on the opening 113, as an exemplary embodiment, referring to FIG. 1 and FIG. 9, the sealing member 120 can further include a sealing ring 123. The sealing ring 123 can be sleeved on the sealing portion 121 and tightly pressed between the boss 122 and the installation member 110 to seal the opening 113. In this way, the sealing ring 123 is in a state of being extruded and deformed, so that the sealing ring 123 can tightly fit the boss 122, the installation member 110 and the sealing portion 121, and ensure the sealing effect of the sealing ring 123 on the opening 113. The boss 122 can be configured as a flat cylinder, and the sealing ring 123 can be configured as a flat ring, so that the space occupied by the boss 122 and the sealing ring 123 along the axial direction of the liquid injection channel 111 can be saved. In this embodiment, the boss 122 can be made of metal materials such as aluminum alloy and stainless steel. The sealing ring 123 can be made of PFA and PP materials.

[0040] In addition, the sealing member 120 can also be made of other suitable materials. In another exemplary embodiment, the sealing part 121 and the boss 122 can be made of metal, such as aluminum alloy, stainless steel, etc. The sealing ring 123 can be made of PFA, PP, etc. In this way, the sealing part 121 can be inserted into the mounting groove 112 from the opening 113 and deformed to drive the boss 122 to move downward, and the boss 122 can press the sealing ring 123 sleeved on the sealing part 121, so that the sealing ring 123 is deformed and tightly fits the sealing part 121, the boss 122 and the shell 220 of the battery, to ensure the sealing effect of the sealing ring 123 on the opening 113. In addition, when the sealing part 121 is installed in the mounting groove 112, the shape of the sealing part 121 is matched with the shape of the mounting groove 112, so that the sealing part 121 can be prevented from being pulled out of the mounting groove 112, to ensure that the boss 122 always presses the sealing ring 123, thereby ensuring the sealing effect of the sealing ring 123.

[0041] In the battery liquid injection hole sealing structure 100 provided by the present disclosure, the mounting groove 112 can be constructed in any suitable manner. As an exemplary embodiment, referring to FIGS. 2 and 3, the mounting groove 112 includes a guide wall 1121, an extension wall 1122, a connecting wall 1123 and a pressing wall 1124 connected in sequence. The guide wall 1121 is connected with the channel opening of the liquid injection channel 111. The extension wall 1122 extends from the guide wall 1121 away from the liquid injection channel 111. The pressing wall 1124 is opposite to the extension wall 1122, and the pressing wall 1124 is connected with the extension wall 1122 through the connecting wall 1123. The guide wall 1121 is used to guide the sealing part 121 to extend into the mounting groove 112 and tightly fit with the pressing wall 1124. In this way, the sealing part 121 can directly fit the guide wall 1121 after passing through the opening 113, and the guide wall 1121 can guide the sealing part 121 to enter the mounting groove 112. In this embodiment, the guide wall 1121 can be a 1 / 4 circular arc to smoothly connect the guide wall 1121 and the extension wall 1122. In other embodiments, the guide wall 1121 can also be of other suitable shapes, which are not limited in the present disclosure.

[0042] The extension wall 1122 extends from the guide wall 1121 away from the liquid injection channel 111, which can save the arrangement space of the mounting groove 112 in the axial direction of the liquid injection channel 111, that is, can save the arrangement space of the mounting member 110 in the axial direction of the liquid injection channel 111. In addition, the pressing wall 1124 is arranged opposite to the extension wall 1122, so that the pressing wall 1124 and the extension wall 1122 can press the sealing part 121 on the opposite sides, respectively, so that the sealing part 121 is deformed by extrusion, and the sealing effect of the sealing part 121 is ensured. In addition, by arranging the connecting wall 1123 to connect the pressing wall 1124 and the extension wall 1122, the outer periphery of the installed sealing part 121 can be abutted to the connecting wall 1123, so as to prevent the situation that the sealing part 121 on one side of the mounting groove 112 is more than that on the other side. That is, by arranging the connecting wall 1123, the sealing part 121 can be evenly distributed in the mounting groove 112, so as to ensure the sealing effect of the sealing part 121.

[0043] In the present disclosure, in order to further ensure the sealing effect of the sealing member 120 on the mounting groove 112, as an exemplary embodiment, referring to FIGS. 2 and 3, the mounting member 110 can have a bottom wall 114, the extension wall 1122 can extend from the guide wall 1121 to the opening 113 in an inclined manner, and an included angle can be formed between the extension wall 1122 and the bottom wall 114. That is, the distance between the extension wall 1122 and the pressing wall 1124 gradually decreases in the direction away from the liquid injection channel 111, so that the sealing part 121 can be gradually compressed between the extension wall 1122 and the pressing wall 1124 during the installation of the sealing part 121 into the mounting groove 112, so as to ensure that the sealing member 120 can be gradually deformed by extrusion. The included angle between the extension wall 1122 and the bottom wall 114 can be 2°-5°.

[0044] In addition, the mounting member 110 can have a bottom wall 114, the pressing wall 1124 can extend from the connecting wall 1123 to the guide wall 1121 in the first direction, and the length of the pressing wall 1124 in the first direction can be greater than or equal to 1 mm. In this way, the contact area between the sealing part 121 and the pressing wall 1124 can be ensured, so that the sealing part 121 is compressed in the mounting groove 112, the sealing part 121 is prevented from being pulled out, and the assembly reliability between the sealing member 120 and the mounting member 110 can be improved. The length of the pressing wall 1124 in the first direction can be less than or equal to 3.5 mm.

[0045] According to a second aspect of the present disclosure, there is provided a battery, with reference to Figs. 5-9, the battery comprises a housing 220 and the above-mentioned battery liquid injection hole sealing structure 100, the housing 220 is formed with a liquid injection hole 210, the mounting piece 110 is arranged in the housing 220, and the sealing part 121 penetrates through the liquid injection hole 210 and sealingly cooperates with the mounting groove 112 to seal the liquid injection hole 210. That is, the mounting piece 110 and part of the sealing part 121 can be arranged inside the housing 220, and the boss 122 and the sealing ring 123 can be arranged outside the housing 220. In this way, on the one hand, the sealing piece 120 can be conveniently mounted into the mounting piece 110; on the other hand, the space occupied by the sealing piece 120 outside the battery can be saved to improve the volume energy density of the battery pack.

[0046] It should be noted that in an exemplary embodiment, the "liquid injection hole 210" can be configured as an opening formed on the housing 220, so that the processing step of punching a columnar liquid injection hole on the housing 220 can be omitted. In addition, compared with the columnar liquid injection hole, the structural strength of the mounting piece 110 provided by the present disclosure is more optimal, which can ensure the extrusion deformation effect of the mounting piece 110 on the sealing piece 120, and further ensure the sealing effect of the sealing piece 120. In another exemplary embodiment, the "liquid injection hole 210" can also be configured as a columnar liquid injection hole punched on the housing, and the liquid injection channel 111 can be sleeved on the outer surface of the liquid injection hole 210 and abut the liquid injection hole 210. In this way, the structural strength of the liquid injection hole 210 can also be improved by the mounting piece 110 to ensure the extrusion deformation effect of the liquid injection hole 210 on the sealing piece 120, and further ensure the sealing effect of the sealing piece 120. In other embodiments, the "liquid injection hole 210" can also be configured in any suitable manner, which is not specifically limited by the present disclosure.

[0047] In the battery provided by the present disclosure, in order to facilitate the installation of the mounting member 110, as an exemplary embodiment, referring to FIGS. 2-4, the battery can further comprise a support frame 310, which can be arranged in the shell 220 and provided with a mounting table 315 and a through hole 314, the mounting member 110 can be fixed to the mounting table 315, and the through hole 314 is communicated with the liquid injection channel 111 and arranged on the side of the liquid injection channel 111 away from the shell 220. Among them, the mounting table 315 can be configured as a recessed table recessed inward from the surface of the support frame 310, and the shape of the mounting table 315 is matched with the shape of the mounting member 110. In this way, on the one hand, the installation of the mounting member 110 can be facilitated, and on the other hand, the support frame 310 can further strengthen the structural strength of the mounting member 110. In this embodiment, the mounting table 315 and the mounting member 110 can be fixedly connected by threads or injection molding. In other embodiments, the mounting table 315 and the mounting member 110 can also be connected in other suitable ways, which are not limited in the present disclosure. In addition, the design of the liquid injection channel 111 and the through hole 314 can facilitate the guiding of the electrolyte into the battery, and prevent the electrolyte from splashing. In addition, the support frame 310 and the mounting member 110 can be made of PPS with added glass fiber, or the mounting member 110 can be made of PPS with added glass fiber, so as to ensure the structural strength of the mounting member 110 and the support frame 310.

[0048] In the present disclosure, the support frame 310 can be configured in any suitable manner, as an exemplary embodiment, the support frame 310 comprises an avoiding area 312 and a supporting area 313, the avoiding area 312 and the supporting area 313 are arranged in the length direction of the pole assembly 230 of the battery, the number of the supporting area 313 is two, and the two supporting areas 313 are arranged on the two sides of the avoiding area 312, wherein the avoiding area 312 can be used to avoid the tab part of the battery. In addition, the supporting area 313 can be provided with a supporting table abutting the inner surface of the shell 220, so as to strengthen the structural strength of the shell 220, so as to prevent the shell 220 from being damaged during the liquid injection process. In addition, the supporting area 313 can also be provided with a plurality of reinforcing ribs arranged vertically, the reinforcing ribs can be arranged on the side of the supporting table away from the shell 220, so as to strengthen the structural strength of the supporting area 313, and the design of the reinforcing ribs combined with the supporting table can reduce the weight of the support frame 310, thereby reducing the weight of the battery itself, and also facilitating heat dissipation.

[0049] In the battery provided by the present disclosure, referring to FIGS. 5-10, the battery can further comprise a pole assembly 230, the number of the pole assembly 230 can be two, and the two pole assemblies 230 can be respectively installed on the two ends of the shell 220 in the length direction, and the liquid injection hole 210 can be arranged on one side of one of the pole assemblies 230.

[0050] In the battery provided in the present disclosure, in order to facilitate the installation of the support frame 310, as an exemplary embodiment, referring to FIG. 10, the battery can further comprise an isolation seat 231, which can be arranged in the shell 220, the support frame 310 and the isolation seat 231 can be connected through a plug-in structure, the plug-in structure can comprise plug-in blocks 311 and plug-in grooves 2311 matched with each other, one of the support frame 310 and the isolation seat 231 can be provided with the plug-in blocks 311, and the other can be provided with the plug-in grooves 2311. In this way, the mounting member 110 is plugged on the isolation seat 231 through the support frame 310, which can ensure the reliability of the assembled mounting member 110.

[0051] Among them, the plug-in grooves 2311 and the plug-in blocks 311 can be arranged in any suitable manner, as an exemplary embodiment, referring to FIG. 4 and FIG. 10, the support frame 310 can be provided with the plug-in blocks 311, the isolation seat 231 can be provided with the plug-in grooves 2311, and a gap is formed between the isolation seat 231 and the shell 220, the plug-in blocks 311 can be plugged into the plug-in grooves 2311 and attached to the shell 220. In this way, the assembly between the support frame 310 and the isolation seat 231 can be completed by plugging, which is simple to operate. It should be noted that after the isolation seat 231 is provided with the plug-in grooves 2311, a gap is formed between the isolation seat 231 and the shell 220.

[0052] In the present disclosure, the number and position of the plug-in grooves 2311 can also be arranged in any suitable manner, the number of the plug-in grooves 2311 can be two, and the two plug-in grooves 2311 can be arranged at opposite ends of the isolation seat 231, so that the isolation seat 231 is T-shaped. In this way, after the support frame 310 is assembled on the isolation seat 231, it can avoid the support frame 310 from being separated from the isolation seat 231 along the first direction and the second direction, so as to ensure the stability of the support frame 310.

[0053] In the battery provided in the present disclosure, the shell 220 can be constructed in any suitable manner, as an exemplary embodiment, referring to FIG. 5, the shell 220 can comprise a first shell 221 and a second shell 222 arranged oppositely, the liquid injection hole 210 and the pole assembly 230 can be arranged at intervals in the first shell 221, the second shell 222 can be constructed as a semi-enclosed structure, and a containing area 223 recessed towards the first shell 221 is formed. In this way, when the battery is assembled, the containing area 223 is used to accommodate the pole assembly 230 of another battery, so as to maximize the use of space between the two adjacent batteries, thereby improving the space utilization rate of the battery pack.

[0054] In the present disclosure, there is a gap between the installed support frame 310 and the second shell 222, so as to avoid assembly interference between the support frame 310 and the second shell 222.

[0055] According to a third aspect of the present disclosure, a battery pack is provided, which comprises the battery described above.

[0056] According to a fourth aspect of the present disclosure, a power consuming device is provided, which comprises the battery or battery pack described above.

[0057] The battery liquid injection hole sealing structure 100 provided by the present disclosure, in use, the installed mounting piece 110 is located at one side of the liquid injection hole 210, and the liquid injection channel 111 is in communication with the liquid injection hole 210. After the liquid injection is completed, the sealing piece 120 can be installed into the mounting groove 112 from the opening 113, and sequentially pass through the guide wall 1121 and the extension wall 1122, and finally be compressed between the extension wall 1122 and the pressing wall 1124, so as to seal the liquid injection hole 210.

[0058] The preferred embodiments of the present disclosure are described in detail above in combination with the drawings, but the present disclosure is not limited to the specific details in the above-described embodiments. Within the technical concept range of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all belong to the protection range of the present disclosure.

[0059] In addition, it should be noted that each specific technical feature described in the above-described specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, various possible combination manners are not described again in the present disclosure.

[0060] In addition, any combination can be made between various different embodiments of the present disclosure, as long as it does not deviate from the idea of the present disclosure, and it should be considered as the disclosed content of the present disclosure.

Claims

1. A battery electrolyte filling hole sealing structure, characterized in that, The battery liquid injection hole sealing structure (100) is used for sealing a liquid injection hole (210), and comprises: a mounting piece (110) adapted to be mounted in the liquid injection hole (210), the mounting piece (110) being formed with a mounting groove (112), and the mounting piece (110) being provided with an opening (113) and a liquid injection channel (111), the opening (113) and the liquid injection channel (111) being in communication with the mounting groove (112) respectively; and a sealing piece (120), a part of the sealing piece (120) being inserted into the mounting groove (112) from the opening (113), and the sealing piece (120) being in sealing cooperation with the mounting groove (112).

2. The battery filling hole sealing structure according to claim 1, wherein The sealing piece (120) comprises a sealing part (121) and a boss (122), the boss (122) being arranged on the opening (113), the sealing part (121) being adapted to be inserted into the mounting groove (112), and the sealing part (121) being in close cooperation with the groove wall of the mounting groove (112).

3. The battery filling hole sealing structure according to claim 2, wherein The sealing part (121) is connected to the boss (122) and is configured in a ring cylinder shape, and the cylinder mouth of the sealing part (121) gradually expands from the boss (122).

4. The battery vent hole sealing structure according to claim 2, wherein The sealing piece (120) further comprises a sealing ring (123), the sealing ring (123) being sleeved on the sealing part (121) and being compressed between the boss (122) and the mounting piece (110) for sealing the opening (113).

5. The battery vent hole sealing structure according to any one of claims 2 to 4, wherein The mounting groove (112) comprises a guide wall (1121), an extension wall (1122), a connecting wall (1123) and a press-fitting wall (1124) connected in sequence, the guide wall (1121) being connected with the channel mouth of the liquid injection channel (111), the extension wall (1122) extending from the guide wall (1121) away from the liquid injection channel (111), the press-fitting wall (1124) being opposite to the extension wall (1122), and the press-fitting wall (1124) being connected with the extension wall (1122) through the connecting wall (1123), the guide wall (1121) being used for guiding the sealing part (121) to extend into the mounting groove (112) and being in close cooperation with the press-fitting wall (1124).

6. The battery vent hole sealing structure according to claim 5, wherein The mounting piece (110) has a bottom wall (114), the extension wall (1122) extending from the guide wall (1121) towards the opening (113) at an angle, and an included angle being formed between the extension wall (1122) and the bottom wall (114).

7. The battery vent hole sealing structure according to claim 5, wherein The mounting piece (110) has a bottom wall (114), the press-fitting wall (1124) extending from the connecting wall (1123) towards the guide wall (1121) along a first direction, and the length of the press-fitting wall (1124) in the first direction being greater than or equal to 1 mm.

8. A battery, characterized by The battery comprises a housing (220) and the battery liquid injection hole sealing structure (100) according to any one of claims 1-7, the liquid injection hole (210) is formed on the housing (220), the mounting member (110) is arranged in the housing (220), and the sealing part (121) passes through the liquid injection hole (210) and is in sealing fit with the mounting groove (112) to seal the liquid injection hole (210).

9. The battery of claim 8, wherein, The battery further comprises a support frame (310) arranged in the housing (220) and provided with a mounting table (315) and a through hole (314), the mounting member (110) is fixed to the mounting table (315), and the through hole (314) communicates with the liquid injection channel (111) and is arranged on a side of the liquid injection channel (111) away from the housing (220).

10. The battery of claim 9, wherein, The battery further comprises two pole post assemblies (230) respectively mounted on two ends of the housing (220) along a length direction, and the liquid injection hole (210) is arranged on a side of one of the pole post assemblies (230).

11. The battery of claim 9, wherein, The battery further comprises an isolation seat (231) arranged in the housing (220), the support frame (310) and the isolation seat (231) are connected through a plug-in structure, the plug-in structure comprises plug-in blocks (311) and plug-in grooves (2311) matched with each other, one of the support frame (310) and the isolation seat (231) is provided with the plug-in block (311), and the other is provided with the plug-in groove (2311).

12. The battery of claim 11, wherein, The support frame (310) is provided with the plug-in block (311), the isolation seat (231) is provided with the plug-in groove (2311), and a gap is formed between the isolation seat (231) and the housing (220), the plug-in block (311) is plugged into the plug-in groove (2311) and is attached to the housing (220).

13. A battery pack, characterized by The battery pack comprises the battery according to any one of claims 8-12.

14. An electrical device, characterized by The electrical equipment comprises the battery according to any one of claims 8-12 or the battery pack according to claim 13.

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