Terminal sealing structure and energy storage equipment

Abstract

The utility model provides a terminal sealing structure and energy storage equipment. The terminal sealing structure comprises an inner shell, a cover shell and a sealing piece. The housing covers the inner shell, the housing is provided with an insertion port for exposing the terminal, the housing and the inner shell are encircled to form a fixing gap for fixing the terminal, and the fixing gap is configured to enable a spacing distance to be formed between the tail end of the terminal and the insertion port so as to enable the terminal to keep away from an installation path of the housing. The sealing piece comprises a first sealing part and a second sealing part, the first sealing part is constructed to form sealing between the fixing notch and the terminal, a mounting gap is formed between the cover shell and the inner shell on the side where the insertion port is located so as to avoid the mounting path of the cover shell, and the second sealing part is arranged in the mounting gap so as to form sealing between the inner shell and the insertion port. According to the terminal sealing structure, through the spacing distance and the installation gap, installation of the cover shell and the inner shell is achieved, sealing among the terminal, the inner shell and the cover shell is achieved through the first sealing part and the second sealing part, and the sealing performance is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of terminal sealing of energy storage devices, and specifically to a terminal sealing structure and an energy storage device. Background Art

[0002] At present, energy storage devices have terminals for external cables to be plugged in, and the shell of the energy storage device has a plug-in interface for exposing the terminal. In order to achieve waterproofing, a sealing ring is usually provided at the plug-in interface, and the sealing ring is clamped in the shell to seal the gap between the terminal and the cover.

[0003] In some energy storage devices, the terminal is located inside the shell. In order to achieve smooth installation of the cover, a gap is left between the end of the terminal and the inner wall of the shell to prevent the terminal from interfering with the installation of the cover. However, this will result in an installation distance between the end of the terminal and the plug-in interface of the shell. In this case, the sealing solution of using a conventional sealing ring at the plug-in interface cannot achieve effective sealing of the terminal. Utility Model Content

[0004] In view of this, the present application provides a terminal sealing structure and an energy storage device that can facilitate terminal sealing.

[0005] In one embodiment of the present application, a terminal sealing structure is provided, which is applied to the terminal of an energy storage device, and the terminal sealing structure includes an inner shell, a cover shell and a sealing member. The cover shell is arranged on the inner shell, and the cover shell is provided with a plug-in interface for exposing the terminal. The cover shell and the inner shell are surrounded to form a fixed notch for fixing the terminal, and the fixed notch is configured to form a spacing distance between the end of the terminal and the plug-in interface so that the terminal avoids the installation path of the empty cover shell. The sealing member includes a first sealing portion and a second sealing portion, and the first sealing portion is configured to form a seal between the fixed notch and the terminal, and an installation gap is formed between the cover shell and the inner shell on the side where the plug-in interface is located to avoid the installation path of the empty cover shell, and the second sealing portion is arranged in the installation gap to form a seal between the inner shell and the plug-in interface.

[0006] In the terminal sealing structure provided by the present application, a spacing distance is formed between the end of the terminal and the plug-in interface by a fixed notch, and an installation gap is formed between the cover shell and the inner shell on the side where the plug-in interface is located, so that the installation path of the cover shell and the inner shell is unobstructed, so as to realize the installation of the cover shell and the inner shell. In addition, a seal is formed between the fixed notch and the terminal by the first sealing portion of the seal to seal the gap between the terminal and the inner shell and the cover shell, and a seal is formed between the inner shell and the plug-in interface by the second sealing portion of the seal to seal the gap between the inner shell and the cover shell, thereby realizing the sealing between the terminal, the inner shell and the cover shell. In summary, the terminal sealing structure provided by the present application can not only realize the smooth installation of the cover shell and the inner shell, but also ensure the sealing performance.

[0007] In some embodiments, the cover shell includes a blocking portion, which together with the inner shell forms a plug-in cavity, the plug-in cavity accommodates the plug-in end of the terminal, one end of the blocking portion is surrounded to form a plug-in interface, the blocking portion is provided with an avoidance notch, the avoidance notch connects the plug-in cavity with the installation gap, so that the terminal avoids the installation path of the cover shell, the fixed notch is connected with the plug-in cavity, at least part of the first sealing portion and at least part of the second sealing portion are located in the plug-in cavity, so as to block the connection between the plug-in cavity and the internal space of the cover shell.

[0008] In some embodiments, the blocking portion includes a first convex strip extending toward the terminal, and the inner shell extends toward the terminal to form a second convex strip. The first convex strip and the second convex strip are arranged opposite to each other to form a bottom wall of the plug-in cavity and enclose a fixed notch. The first sealing portion surrounds the terminal and is clamped in the gap between the first convex strip and the second convex strip and the terminal.

[0009] In some embodiments, the blocking portion also includes a partition connected to the first protrusion, the partition surrounds the side wall of the plug-in cavity, the side of the partition away from the first protrusion forms a plug-in interface, and an avoidance gap is provided on the partition. One end of the first sealing portion is clamped in the fixed gap to seal the fixed gap, and the other end abuts against the partition to form a seal between the second protrusion and the partition. The second sealing portion is provided in the avoidance gap to block the connection between the plug-in cavity and the installation gap.

[0010] In some embodiments, the inner shell is provided with a third ridge, the third ridge is located in the avoidance gap, the end of the third ridge is spaced from the cover shell on the side with the plug-in interface to form an installation gap, the second sealing portion is provided on the third ridge and extends to the installation gap to form a seal between the end of the third ridge and the cover shell on the side with the plug-in interface, and the second sealing portion abuts against one end of the partition toward the avoidance gap to form a seal between the third ridge and the partition.

[0011] In some embodiments, the second sealing portion is provided with a U-shaped groove, the bottom wall of the U-shaped groove is clamped in the installation gap, and the end of the third protrusion is clamped in the U-shaped groove.

[0012] In some embodiments, the third convex strip is provided with a fixing groove, and a limiting boss is provided on the side of the second sealing portion facing away from the plug-in cavity, and the limiting boss is clamped in the fixing groove.

[0013] In some embodiments, an end of the first sealing portion facing away from the fixing notch is connected to the second sealing portion.

[0014] In some embodiments, a side of the second sealing portion facing the terminal has an inclined surface, and the inclined surface gradually moves away from the terminal along a direction from the terminal toward the plug-in port.

[0015] In one embodiment of the present application, an energy storage device is also provided, the energy storage device includes a terminal, a shell and a terminal sealing structure in any of the above embodiments, the shell is provided with a accommodating space, the terminal sealing structure is arranged in the accommodating space, the shell is provided with an opening, the opening is aligned with the plug interface to expose the terminal, the shell is provided with a terminal cover at the opening, and the terminal cover is configured to be able to open or cover the opening.

[0016] In the energy storage device provided by the present application, since the terminal is arranged outside the inner shell and inside the cover shell, a spacing distance is formed between the end of the terminal and the plug-in port, and an installation gap is formed between the cover shell and the inner shell on the side where the plug-in port is located. A seal is formed between the fixed notch and the terminal by the first sealing portion of the seal to seal the gap between the terminal and the inner shell and the cover shell, and a seal is formed between the inner shell and the plug-in port by the second sealing portion of the seal to seal the gap between the inner shell and the cover shell, thereby achieving sealing of the terminals arranged outside the inner shell and inside the cover shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of an energy storage device in one embodiment of the present application.

[0018] Figure 2 for Figure 1 Exploded view of the energy storage device.

[0019] Figure 3 This is an exploded view of a terminal sealing structure in one embodiment of the present application.

[0020] Figure 4 for Figure 1 Cross-sectional view of the energy storage device.

[0021] Figure 5 for Figure 4 Enlarged view of the V in the middle.

[0022] Figure 6 It is a three-dimensional diagram from the bottom perspective of a cover shell in one embodiment of the present application.

[0023] Figure 7 It is a three-dimensional diagram of a sealing member in one embodiment of the present application.

[0024] Figure 8 for Figure 7 A three-dimensional view of the middle seal from another perspective.

[0025] Fig. 9 for Figure 3 Enlarged view of point IX in the middle.

[0026] Fig.10 for Figure 3 A three-dimensional view of the inner shell and seal after installation.

[0027] Main component symbols

[0028] 100-Terminal sealing structure 200-Energy storage device 201-Terminal

[0029] 202-battery core 203-circuit board 204-housing

[0030] 2041-accommodation space 2042-opening 205-terminal cover

[0031] 10-inner shell 11-second ridge 12-third ridge

[0032] 121-fixing groove 13-second side plate 20-cover

[0033] 21-installation port 22-plug port 23-blocking part

[0034] 231-avoidance gap 232-first convex strip 233-partition plate

[0035] 2331-top plate 2332-first side plate 30-seal

[0036] 31-first sealing portion 311-annular sealing body 3111-through hole

[0037] 3112- annular groove 312- frame 3121- first convex rib

[0038] 32-second sealing portion 321-U-shaped groove 322-limiting boss

[0039] 3221 - second rib 323 - contact surface 324 - inclined surface

[0040] 3241-first drainage surface 3242-second drainage surface 40-fixed notch

[0041] 50-plug-in cavity L-spacing distance H-installation clearance DETAILED DESCRIPTION

[0042] The technical solution of the present application will be described below in conjunction with the drawings in the implementation modes of the present application. Obviously, the described implementation modes are only part of the implementation modes of the present application, rather than all the implementation modes.

[0043] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0045] At present, energy storage devices have terminals for external cables to be plugged in, and the shell of the energy storage device has a plug-in interface for exposing the terminal. In order to achieve waterproofing, a sealing ring is usually provided at the plug-in interface, and the sealing ring is clamped in the shell to seal the gap between the terminal and the cover.

[0046] In some energy storage devices, the terminal is located inside the shell. In order to achieve smooth installation of the cover, a gap is left between the end of the terminal and the inner wall of the shell to prevent the terminal from interfering with the installation of the cover. However, this will result in an installation distance between the end of the terminal and the plug-in interface of the shell. In this case, the sealing solution of using a conventional sealing ring at the plug-in interface cannot achieve effective sealing of the terminal.

[0047] In view of this, the present application provides a terminal sealing structure that can facilitate terminal sealing and an energy storage device having the terminal sealing structure. The terminal sealing structure is applied to the terminal of the energy storage device, and the terminal sealing structure includes an inner shell, a cover shell and a seal. The cover shell is arranged on the inner shell, and the cover shell is provided with a plug-in interface for exposing the terminal. The cover shell and the inner shell are surrounded to form a fixed notch for fixing the terminal. The fixed notch is constructed so that a spacing distance is formed between the end of the terminal and the plug-in interface so that the terminal avoids the installation path of the empty cover shell. The seal includes a first sealing portion and a second sealing portion. The first sealing portion is configured to form a seal between the fixed notch and the terminal. An installation gap is formed between the cover shell and the inner shell on the side where the plug-in interface is located to avoid the installation path of the empty cover shell. The second sealing portion is arranged in the installation gap to form a seal between the inner shell and the plug-in interface.

[0048] In the terminal sealing structure provided by the present application, since the terminal is arranged outside the inner shell and inside the cover shell, a spacing distance will be formed between the end of the terminal and the plug-in interface, and an installation gap will be formed between the cover shell and the inner shell on the side where the plug-in interface is located. A seal is formed between the fixed notch and the terminal by the first sealing portion of the seal to seal the gap between the terminal and the inner shell and the cover shell. A seal is also formed between the inner shell and the plug-in interface by the second sealing portion of the seal to seal the gap between the inner shell and the cover shell, thereby realizing the sealing of the terminal arranged outside the inner shell and inside the cover shell.

[0049] The following is combined with Figures 1 to 10 , some embodiments of the present application are described in detail. In the absence of conflict, the following embodiments and features of the embodiments can be combined with each other.

[0050] like Figures 1 to 3 As shown, in some embodiments of the present application, a terminal sealing structure 100 and an energy storage device 200 are provided. The energy storage device 200 includes a terminal 201 and a terminal sealing structure 100, and the terminal 201 is used to plug in a plug of an external device. The terminal sealing structure 100 includes an inner shell 10, a cover shell 20 and a sealing member 30, the cover shell 20 is covered in the inner shell 10, the terminal 201 is located between the inner shell 10 and the cover shell 20 and exposed in the cover shell 20, and the sealing member 30 is used to seal the gap between the terminal 201, the inner shell 10 and the cover shell 20 to ensure the sealing of the cover shell 20.

[0051] As an illustrative example, the energy storage device 200 may be a portable power source used in outdoor scenarios, or a home energy storage system for home energy storage, etc. The energy storage device 200 further includes a battery cell 202, an inner shell 10 as a fixing bracket of the battery cell 202, a cover shell 20 as a protective shell of the battery cell 202, and a terminal 201 electrically connected to the battery cell 202 to enable the battery cell 202 to supply power to an external device, or to enable an external device to charge the battery cell 202, or to be electrically connected to other energy storage devices.

[0052] In some embodiments, Figures 1 to 3 As shown, the energy storage device 200 also includes a circuit board 203, which can be installed on the top of the inner shell 10 and located inside the cover shell 20, the terminal 201 is electrically connected to the circuit board 203, and the circuit board 203 is electrically connected to the battery cell 202, so that the terminal 201 is electrically connected to the battery cell 202, and the circuit board 203 can protect and control the charging and discharging of the battery cell 202.

[0053] In some embodiments, Figures 1 to 3As shown, the energy storage device 200 further includes a housing 204, the housing 204 is provided with an accommodating space 2041, the terminal sealing structure 100 is provided in the accommodating space 2041, and the housing 204 is used to protect the terminal sealing structure 100. Optionally, the housing 204 is provided with an opening 2042, and the opening 2042 is used to expose the terminal 201. Further optionally, the housing 204 is provided with a terminal cover 205 at the opening 2042, and the terminal cover 205 can open or cover the opening 2042. When the terminal cover 205 opens the opening 2042, the terminal 201 can be exposed for use; when the terminal 201 is not in use, the terminal cover 205 covers the opening 2042 to seal the opening 2042, which can improve the sealing performance.

[0054] In some embodiments, Figures 1 to 3 As shown, the bottom of the cover shell 20 is provided with an installation opening 21. When the cover shell 20 and the inner shell 10 are installed, the inner shell 10 enters the cover shell 20 from the installation opening 21, that is, the installation path of the cover shell 20 relative to the inner shell 10 is: the cover shell 20 moves relative to the inner shell 10 along the opening direction of the installation opening 21. The cover shell 20 covers the inner shell 10 through the installation opening 21 to achieve the installation of the cover shell 20 and the inner shell 10.

[0055] like Figures 3 to 5 As shown, in some embodiments, the cover shell 20 is provided with a plug-in interface 22 for exposing the terminal 201. After the cover shell 20 and the inner shell 10 are installed, the cover shell 20 and the inner shell 10 are surrounded by a fixed notch 40. One end of the terminal 201 is fixed at the fixed notch 40, and the fixed notch 40 is constructed so that a spacing distance L is formed between the end of the terminal 201 away from the circuit board 203 and the plug-in interface 22, so that the terminal 201 can avoid the installation path of the cover shell 20, and avoid the terminal 201 interfering with the cover shell 20 when the cover shell 20 and the inner shell 10 are installed, so that the installation path of the cover shell 20 and the inner shell 10 are unobstructed, so as to achieve the installation of the cover shell 20 and the inner shell 10. It can be understood that the end of the terminal 201 is the end of the terminal 201 close to the plug-in interface 22, and the part of the terminal 201 fixed at the fixed notch 40 is the end of the terminal 201 away from the plug-in interface 22. In some embodiments, as Figures 3 to 5 As shown, an installation gap H is formed between the cover shell 20 and the inner shell 10 on the side where the plug-in port 22 is located to avoid an installation path of the cover shell 20 and to prevent the inner shell 10 from interfering with the cover shell 20 when the cover shell 20 and the inner shell 10 are installed, so that the installation path of the cover shell 20 and the inner shell 10 is unobstructed to achieve the installation of the cover shell 20 and the inner shell 10.

[0056] It can be understood that since the terminal 201 is fixed outside the inner shell 10 and is also fixed outside the cover shell 20, when the cover shell 20 is installed, in order to avoid interference between the cover shell 20 and the terminal 201 during installation, an installation gap H is always left between the cover shell 20 on the side where the plug interface 22 is located and the terminal. After the cover shell 20 is installed, there is a spacing distance L between the terminal 201 and the plug interface 22, so that there is a gap between the terminal 201 and the plug interface 22, resulting in the conventional sealing solution, that is, a seal is installed at the plug interface 22, and the terminal 201 cannot be effectively sealed.

[0057] like Figure 5 , Figure 7 and Figure 8 As shown, in some embodiments, the seal 30 includes a first sealing portion 31 and a second sealing portion 32. After the housing 20 and the inner housing 10 are installed, the first sealing portion 31 is configured to form a seal between the fixing notch 40 and the terminal 201, thereby sealing the gap between the terminal 201 and the housing 20 and the gap between the terminal 201 and the inner housing 10; the second sealing portion 32 is arranged in the installation gap H to form a seal between the inner housing 10 and the plug-in port 22, thereby sealing the gap between the inner housing 10 and the housing 20, that is, the seal 30 realizes the sealing between the terminal 201, the inner housing 10 and the housing 20 through the first sealing portion 31 and the second sealing portion 32 to ensure the sealing. It can be understood that the first sealing portion 31 and the second sealing portion 32 jointly seal the gap between the terminal 20 and the inner housing, the gap between the terminal 201 and the housing 20, and the gap between the inner housing 10 near the terminal 20 and the housing 20, thereby achieving effective sealing of the terminal 201.

[0058] In some embodiments, Figures 4 to 6 As shown, the housing 20 includes a blocking portion 23. After the housing 20 and the inner housing 10 are installed, the blocking portion 23 and the inner housing 10 enclose a plug-in cavity 50. The plug-in cavity 50 is used to accommodate the plug-in end of the terminal 201, wherein the plug-in end is the end of the terminal 201 away from the circuit board 203, and is used to connect with an external connector. One end of the blocking portion 23 is surrounded to form a plug-in interface 22. The blocking portion 23 is also provided with an avoidance notch 231. The avoidance notch 231 connects the plug-in cavity 50 with the installation gap H, so that the blocking portion 23 can avoid the terminal 201 through the avoidance notch 231, thereby allowing the terminal 201 to avoid the installation path of the housing 20, and avoiding the interference of the blocking portion 23 with the terminal 201 when the housing 20 and the inner housing 10 are installed. The fixing notch 40 is in communication with the plug-in cavity 50, and at least a portion of the first sealing portion 31 and at least a portion of the second sealing portion 32 are located in the plug-in cavity 50 to block the communication between the plug-in cavity 50 and the internal space of the housing 20. It should be noted that the plug-in cavity 50 is a portion of the area formed by the housing 20, and is in communication with the outside world through the plug-in port 22, and the internal space of the housing 20 is another portion of the area formed by the housing 20.

[0059] In some embodiments, Figures 5 to 7 As shown, the blocking portion 23 includes a first convex strip 232 protruding toward the terminal 201, and the inner housing 10 protrudes toward the terminal 201 to form a second convex strip 11, the first convex strip 232 and the second convex strip 11 are arranged opposite to each other, and the first convex strip 232 and the second convex strip 11 form the bottom wall of the plug-in cavity 50 and enclose a fixed notch 40. The first sealing portion 31 surrounds the terminal 201 and is clamped in the gap between the first convex strip 232 and the second convex strip 11 and the terminal 201, thereby sealing the gap between the terminal 201 and the housing 20 and the gap between the terminal 201 and the inner housing 10.

[0060] Optionally, the first sealing portion 31 surrounds the portion of the terminal 201 to form an annular sealing body 311, and the annular sealing body 311 is provided with a through hole 3111, and the terminal 201 passes through the annular sealing body 311 through the through hole 3111, and the cross-sectional shape of the through hole 3111 is the same as the cross-sectional shape of the terminal 201, so that the hole wall of the through hole 3111 fits the outer surface of the terminal 201 to seal the gap between the hole wall of the through hole 3111 and the terminal 201.

[0061] Optionally, the outer surface of the annular sealing body 311 is provided with an annular groove 3112 surrounding the terminal 201 , and the first convex strip 232 and the second convex strip 11 are at least partially inserted into the annular groove 3112 , thereby improving the sealing performance.

[0062] In some embodiments, Figures 5 to 7 As shown, the blocking portion 23 further includes a partition 233 connected to the first convex strip 232, the partition 233 surrounds and forms the side wall of the plug-in cavity 50, the side of the partition 233 away from the first convex strip 232 forms the plug-in port 22, and the avoidance notch 231 is provided on the side of the partition 233 facing the installation port 21. One end of the first sealing portion 31 is clamped in the fixing notch 40 to seal the fixing notch 40, and the other end abuts against the partition 233 to form a seal between the second convex strip 11 and the partition 233. The second sealing portion 32 is provided in the avoidance notch 231 to block the plug-in cavity 50 from communicating with the installation gap H.

[0063] Optionally, the partition 233 includes a top plate 2331 and two first side plates 2332, and the two first side plates 2332 are respectively arranged on opposite sides of the top plate 2331. The two first side plates 2332 are not connected to each other on the side away from the top plate 2331 to form an avoidance gap 231. The top plate 2331 and the two first side plates 2332 are all connected to the edge of the plug port 22. The first convex strip 232 is arranged on the side of the top plate 2331 and the two first side plates 2332 away from the plug port 22. After the cover shell 20 and the inner shell 10 are installed, the top plate 2331 and the two first side plates 2332 enclose a roughly rectangular plug-in cavity 50.

[0064] Optionally, the first sealing portion 31 abuts against the partition 233 to form a frame 312, which is located in the plug-in cavity 50, and the outer surface of the frame 312 abuts against the partial surface of the top plate 2331 and the two first side plates 2332 in the plug-in cavity 50 to improve the sealing performance.

[0065] Further optionally, at least one first rib 3121 is provided on the outer surface of the frame 312. The first rib 3121 is extended along the contour of the frame 312. The frame 312 abuts against the surface of the top plate 2331 and the two first side plates 2332 in the plug-in cavity 50 through the first rib 3121. The first rib 3121 can not only improve the sealing performance, but also increase the friction to improve the stability.

[0066] In some embodiments, Figure 5 , Figure 7 and Figure 8 As shown, the inner shell 10 is provided with a third convex strip 12, the third convex strip 12 is located at the avoidance notch 231, and the end of the third convex strip 12 is spaced from the housing 20 on the side provided with the plug-in port 22 to form an installation gap H. The second sealing portion 23 is provided at the third convex strip 12 and extends into the installation gap H. The second sealing portion 23 abuts against the inner surface of the housing 20 to form a seal between the end of the third convex strip 12 and the housing 20 on the side provided with the plug-in port 22, thereby sealing the installation gap H. The second sealing portion 32 also abuts against one end of the partition 233 facing the avoidance notch 231 to form a seal between the third convex strip 12 and the partition 233.

[0067] In some embodiments, Figure 5 , Figure 7 and Figure 8 As shown, the second sealing portion 32 is provided with a U-shaped groove 321, and the end of the third protrusion 12 is clamped in the U-shaped groove 321 to fix the relative position of the second sealing portion 32 and the third protrusion 12, thereby improving the stability of the second sealing portion 32. The bottom wall of the U-shaped groove 321 is clamped in the installation gap H, and the surface of the second sealing portion 32 facing away from the U-shaped groove 321 abuts against the inner surface of the housing 20 to seal the installation gap H.

[0068] In some embodiments, Figure 5 , Figure 7 and Figure 8 As shown, a fixing groove 121 is provided on the side of the third convex strip 12 facing the plug-in cavity 50, and a limiting boss 322 is provided on the side of the second sealing portion 32 away from the plug-in cavity 50, and the limiting boss 322 is clamped in the fixing groove 121. The cooperation between the limiting boss 322 and the fixing groove 121 can not only further play a sealing role, but also fix the relative position of the second sealing portion 32 and the third convex strip 12, so as to fix the second sealing portion 32 to the inner shell 10, so as to improve the stability of the second sealing portion 32 and even the sealing member 30.

[0069] Optionally, at least one second rib 3221 is provided on the outer surface of the limiting boss 322, and the second rib 3221 is arranged around the limiting boss 322. The limiting boss 322 abuts against the groove wall of the fixing groove 121 through the second rib 3221. The second rib 3221 can not only improve the sealing performance, but also increase the friction to improve the stability.

[0070] In some embodiments, Figures 6 to 8 As shown, abutment surfaces 323 are provided on opposite sides of the second sealing portion 32, and the abutment surfaces 323 are used to abut the end surfaces of the two first side plates 2332 close to the avoidance notch 231, so as to form a seal between the third convex strip 12 and the partition plate 233. Optionally, the abutment surfaces 323 and the two first side plates 2332 are interference fit, so that the two first side plates 2332 are embedded in the abutment surfaces 323 to improve the sealing performance.

[0071] In some embodiments, Figures 5 to 7 As shown, one end of the first sealing portion 31 away from the fixing notch 40 is connected to the second sealing portion 32. Optionally, the second sealing portion 32 is connected to the bottom end of the first sealing portion 31. When the inner shell 10, the cover shell 20 and the sealing member 30 are installed, the first sealing portion 31, the second sealing portion 32, the top plate 2331 and the two first side plates 2332 together form the plug-in cavity 50.

[0072] In some embodiments, Figure 3 , Figure 5 and Figure 7 As shown, the second sealing portion 32 has a slope 324 on one side facing the terminal 201, and the slope 324 gradually moves away from the terminal 201 along the direction of the terminal 201 toward the plug-in port 22. When water enters the plug-in cavity 50, the water will fall onto the slope 324 and flow along the slope 324 by gravity. When the terminal cover 205 of the housing 204 is opened, the water will flow out of the plug-in cavity 50 along the slope 324, thereby reducing the phenomenon of water accumulation in the plug-in cavity 50 and helping to improve the sealing.

[0073] Optionally, the inclined surface 324 includes a first drainage surface 3241 and two second drainage surfaces 3242. The two second drainage surfaces 3242 are respectively arranged on opposite sides of the first drainage surface 3241. Each second drainage surface 3242 connects the first drainage surface 3241 and the abutment surface 323 on the corresponding side. The second drainage surface 3242 forms a chamfer between the first drainage surface 3241 and the abutment surface 323, thereby facilitating the discharge of water from the plug-in cavity 50.

[0074] Further optionally, after the first side plate 2332 abuts against the abutment surface 323, the first side plate 2332 is exactly connected to the edge of the second drainage surface 3242 on the inner surface of the plug-in cavity 50, that is, the abutment surface 323 is not exposed in the plug-in cavity 50, so that water will not accumulate on the abutment surface 323, and all accumulated water entering the plug-in cavity 50 will be discharged along the first drainage surface 3241 and the second drainage surface 3242.

[0075] like Figure 6 , Figure 7 , Fig. 9 and Fig.10 As shown, in some embodiments, the second ridge 11 and the third ridge 12 are both arranged at the top of the inner shell 10, and two second side panels 13 are also arranged at the top of the inner shell 10, and the two second side panels 13 are respectively arranged on the opposite sides of the second ridge 11 and the third ridge 12. When the inner shell 10 and the cover shell 20 are installed, the two first side panels 2332 of the cover shell 20 are located between the two second side panels 13 of the inner shell 10 and abut against the abutting surface 323, that is, the two second side panels 13 of the inner shell 10 are located on the back and front sides of the two first side panels 2332 of the cover shell 20, so that the two second side panels 13 of the inner shell 10 can not only limit the two first side panels 2332 of the cover shell 20, but also improve the sealing.

[0076] In addition, those skilled in the art should recognize that the above embodiments are only used to illustrate the present application and are not intended to be limiting of the present application. As long as they are within the spirit and scope of the present application, appropriate changes and modifications to the above embodiments are within the scope of the present application.

Claims

1. A terminal sealing structure, applied to the terminal of an energy storage device, characterized in that: The terminal sealing structure comprises: Inner shell; A cover shell, the cover shell is covered by the inner shell, the cover shell is provided with an insertion port for exposing the terminal, the cover shell and the inner shell are surrounded to form a fixing notch for fixing the terminal, the fixing notch is configured to form a spacing distance between the end of the terminal and the insertion port, so that the terminal avoids the installation path of the cover shell; and A seal, the seal comprising a first sealing portion and a second sealing portion, the first sealing portion being configured to form a seal between the fixing notch and the terminal, an installation gap being formed between the cover shell and the inner shell on the side where the plug interface is located to avoid an installation path of the cover shell, and the second sealing portion being arranged in the installation gap to form a seal between the inner shell and the plug interface.

2. The terminal sealing structure according to claim 1, characterized in that: The cover shell includes a blocking portion, which together with the inner shell forms a plug-in cavity, and the plug-in cavity accommodates the plug-in end of the terminal. One end of the blocking portion surrounds the plug-in interface. The blocking portion is provided with an avoidance notch, and the avoidance notch connects the plug-in cavity with the installation gap so that the terminal avoids the installation path of the cover shell. The fixed notch is connected to the plug-in cavity, and at least part of the first sealing portion and at least part of the second sealing portion are located in the plug-in cavity to block the connection between the plug-in cavity and the internal space of the cover shell.

3. The terminal sealing structure according to claim 2, characterized in that: The blocking portion includes a first convex strip protruding toward the terminal, and the inner shell protrudes toward the terminal to form a second convex strip. The first convex strip and the second convex strip are arranged opposite to each other to form the bottom wall of the plug-in cavity and enclose the fixed notch. The first sealing portion surrounds the terminal and is clamped in the gap between the first convex strip and the second convex strip and the terminal.

4. The terminal sealing structure according to claim 3, characterized in that: The blocking portion also includes a partition connected to the first convex strip, the partition surrounds the side wall of the plug-in cavity, the side of the partition away from the first convex strip forms the plug-in port, the avoidance gap is arranged on the partition, one end of the first sealing portion is clamped in the fixed gap to seal the fixed gap, and the other end abuts against the partition to form a seal between the second convex strip and the partition, and the second sealing portion is arranged in the avoidance gap to block the connection between the plug-in cavity and the installation gap.

5. The terminal sealing structure according to claim 4, characterized in that: The inner shell is provided with a third ridge, and the third ridge is located in the avoidance gap. The end of the third ridge is spaced from the cover shell on the side where the plug-in port is provided to form the installation gap. The second sealing portion is provided on the third ridge and extends to the installation gap to form a seal between the end of the third ridge and the cover shell on the side where the plug-in port is provided. The second sealing portion abuts against one end of the partition plate toward the avoidance gap to form a seal between the third ridge and the partition plate.

6. The terminal sealing structure according to claim 5, characterized in that: The second sealing portion is provided with a U-shaped groove, the bottom wall of the U-shaped groove is clamped in the installation gap, and the end of the third convex strip is clamped in the U-shaped groove.

7. The terminal sealing structure according to claim 5, characterized in that: The third convex strip is provided with a fixing groove, and the second sealing portion is provided with a limiting boss on a side away from the plug-in cavity, and the limiting boss is clamped in the fixing groove.

8. The terminal sealing structure according to any one of claims 1 to 7, characterized in that: One end of the first sealing portion facing away from the fixing notch is connected to the second sealing portion.

9. The terminal sealing structure according to any one of claims 1 to 7, characterized in that: A side of the second sealing portion facing the terminal has an inclined surface, and the inclined surface gradually moves away from the terminal along a direction from the terminal toward the plug-in port.

10. An energy storage device, characterized in that: The energy storage device includes a terminal, a shell and a terminal sealing structure as described in any one of claims 1 to 9, the shell is provided with a accommodating space, the terminal sealing structure is arranged in the accommodating space, the shell is provided with an opening, the opening is aligned with the plug interface to expose the terminal, the shell is provided with a terminal cover at the opening, and the terminal cover is configured to be able to open or cover the opening.

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