Cover plate assembly, battery, energy storage system and photovoltaic power generation system

Abstract

The utility model discloses a cover plate assembly, a battery, an energy storage system and a photovoltaic power generation system. The cover plate assembly comprises a substrate, a pole, a first sealing piece, a first insulating piece and a second sealing piece, the substrate is provided with a first surface and a second surface which are arranged oppositely, the first surface is provided with a groove sunken towards the second surface, and the groove bottom of the groove is provided with a pole hole penetrating to the second surface; the pole penetrates through the pole hole; the first sealing piece is at least partially arranged in the groove; the first insulating part is arranged on the first surface side, the pole penetrates through the first insulating part, and the first insulating part abuts against the first sealing part; the second sealing element is arranged at the matching part of the pole hole and the pole, the second sealing element partially extends to the second surface side, and the first sealing element is matched with the second sealing element in a pressing manner. According to the application, the sealing performance of the cover plate assembly is improved, and liquid such as electrolyte and water can be effectively prevented from entering the pole through the fit clearance to cause micro short circuit, corrosion or influence on the resistance value of the battery.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a cover plate assembly, a battery, an energy storage system and a photovoltaic power generation system. Background Art

[0002] In the related art, the battery production process includes injection and cleaning steps. During injection, the electrolyte can easily enter the pole through the matching gap between the insulating plate and the substrate, causing micro short circuits, which may corrode or affect the battery resistance. During the cleaning process, water can easily enter the pole through the matching gap between the insulating plate and the substrate, causing micro short circuits, corrosion or affecting the battery resistance. Therefore, there is room for improvement. Utility Model Content

[0003] The utility model aims to solve at least one of the above-mentioned technical problems in the prior art to a certain extent. To this end, the utility model provides a cover plate assembly, which can improve the sealing performance of the cover plate assembly.

[0004] The utility model also provides a battery.

[0005] The utility model also provides an energy storage system.

[0006] The utility model also provides a photovoltaic power generation system.

[0007] According to the cover plate assembly of the embodiment of the utility model, it includes a substrate, a pole, a first seal, a first insulating member and a second seal, the substrate having a first surface and a second surface arranged opposite to each other, the first surface is provided with a groove recessed toward the second surface, the bottom of the groove is provided with a pole hole penetrating to the second surface; the pole is penetrated by the pole hole; the first seal is at least partially arranged in the groove; the first insulating member is arranged on the first surface side, the pole is penetrated by the first insulating member, and the first insulating member presses against the first seal; the second seal is arranged at the matching position between the pole hole and the pole, and the second seal partially extends to the second surface side, and the first seal and the second seal are pressed against each other.

[0008] According to the cover assembly of the embodiment of the utility model, the pole can pass through the second seal, the substrate, the first seal and the first insulating member in sequence. The first seal is arranged between the first insulating member and the substrate, which can reduce the leakage of liquids such as electrolyte and water from the first surface of the substrate to the pole; the second seal is arranged between the substrate and the pole, which can reduce the leakage of electrolyte and water from the second surface of the substrate to the pole, thereby improving the sealing of the cover assembly, and effectively preventing liquids such as electrolyte and water from entering the pole through the matching gap to cause micro short circuit, corrosion or affect the battery resistance. At the same time, the second seal and the first seal are pressed and matched, which can enhance the sealing effect of the second seal and the first seal.

[0009] In some embodiments, an initial thickness of the first seal is greater than a depth of the groove.

[0010] In some embodiments, the pole includes a connected pole body and a pole extension, the pole extension is passed through the pole hole and extends out of the first surface, the pole body is located on the side of the second surface away from the first surface, and the second seal is at least partially sandwiched between the second surface and the pole body.

[0011] In some embodiments, the second seal includes a connected seal body and a seal extension, the seal extension is arranged in the gap between the pole hole and the pole body, the seal body seals the gap between the second surface and the pole body, and the first seal is pressed and fitted with the seal extension.

[0012] In some embodiments, the first seal is annular, the seal extension is sleeved around the outer periphery of the pole extension, and the first seal is sleeved around the outer periphery of the seal extension.

[0013] In some embodiments, the cover plate assembly further includes a second insulating member, the second insulating member is disposed on the second surface side, and the second insulating member is at least partially sandwiched between the second surface and the pole body.

[0014] In some embodiments, the second insulating member includes a second insulating member body, the second insulating member body is sandwiched between the second surface and the pole body, and the thickness of the second insulating member body is less than the initial thickness of the sealing member body.

[0015] In some embodiments, the cover plate assembly further includes a pressing member, the pressing member is fixed to the pole, and the first insulating member is at least partially sandwiched between the pressing member and the substrate.

[0016] In some embodiments, the number of the grooves on the substrate is one or two.

[0017] The battery according to the embodiment of the utility model comprises a shell body, wherein the shell body has an open end;

[0018] According to the cover plate assembly of the embodiment of the utility model, the cover plate assembly is suitable for covering the open end of the shell body.

[0019] According to the battery of the embodiment of the utility model, by setting the above-mentioned cover plate assembly, the pole can pass through the second seal, substrate, first seal and first insulating member in sequence. The first seal is arranged between the first insulating member and the substrate, which can reduce the leakage of electrolyte and water from the first surface of the substrate to the pole; the second seal is arranged between the substrate and the pole, which can reduce the leakage of electrolyte and water from the second surface of the substrate to the pole, thereby improving the sealing of the cover plate assembly, and effectively preventing liquids such as electrolyte and water from entering the pole through the matching gap to cause micro short circuit, corrosion or affect the battery resistance. At the same time, the second seal and the first seal are pressed and matched, which can enhance the sealing effect of the second seal and the first seal.

[0020] The energy storage system according to the embodiment of the utility model includes the battery according to the embodiment of the utility model.

[0021] According to the energy storage system of the embodiment of the utility model, by using the above-mentioned battery, the pole can pass through the second seal, substrate, first seal and first insulating member in sequence. The first seal is arranged between the first insulating member and the substrate, which can reduce the leakage of electrolyte and water from the first surface of the substrate to the pole; the second seal is arranged between the substrate and the pole, which can reduce the leakage of electrolyte and water from the second surface of the substrate to the pole, thereby improving the sealing of the cover assembly, and effectively preventing liquids such as electrolyte and water from entering the pole through the matching gap to cause micro short circuit, corrosion or affect the battery resistance. At the same time, the second seal and the first seal are pressed and matched, which can enhance the sealing effect of the second seal and the first seal.

[0022] A photovoltaic power generation system according to an embodiment of the utility model includes a battery according to an embodiment of the utility model.

[0023] According to the photovoltaic power generation system of the embodiment of the utility model, by using the above-mentioned battery, the pole can pass through the second seal, substrate, first seal and first insulating member in sequence. The first seal is arranged between the first insulating member and the substrate, which can reduce the leakage of electrolyte and water from the first surface of the substrate to the pole; the second seal is arranged between the substrate and the pole, which can reduce the leakage of electrolyte and water from the second surface of the substrate to the pole, thereby improving the sealing of the cover assembly, and effectively preventing liquids such as electrolyte and water from entering the pole through the matching gap to cause micro short circuit, corrosion or affect the battery resistance. At the same time, the second seal is pressed and matched with the first seal, which can enhance the sealing effect of the second seal and the first seal.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is an exploded view of a cover plate assembly according to an embodiment of the utility model;

[0026] Figure 2 is a top view of a cover plate assembly according to an embodiment of the utility model;

[0027] Figure 3 is a cross-sectional view of a cover plate assembly according to an embodiment of the utility model;

[0028] Figure 4 It is a partial cross-sectional view of a cover plate assembly according to an embodiment of the utility model.

[0029] Reference numerals:

[0030] Cover plate assembly 100;

[0031] Substrate 1, first surface 11, groove 111, pole hole 112, second surface 12;

[0032] Pole 2, pole body 21, pole extension 22;

[0033] The first insulating member 31, the first insulating member body 311, the first insulating member extension portion 312, the second insulating member 32, the second insulating member body 321, the second insulating member extension portion 322;

[0034] A first sealing member 41, a second sealing member 42, a sealing member body 421, and a sealing member extension portion 422;

[0035] Pressing piece 5. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0037] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] Combine the following Figure 1-Figure 4 The cover plate assembly 100 according to the embodiment of the present invention is described in detail.

[0039] Reference Figure 1 As shown, the cover plate assembly 100 according to the embodiment of the present invention includes a substrate 1 , a pole 2 , a first sealing member 41 , a first insulating member 31 and a second sealing member 42 .

[0040] The substrate 1 has a first surface 11 and a second surface 12, and the first surface 11 and the second surface 12 are arranged opposite to each other. A groove 111 is provided on the first surface 11, and the groove 111 is recessed toward the second surface 12. The bottom of the groove 111 has a pole hole 112, and the pole hole 112 runs from the bottom of the groove 111 to the second surface 12. The pole 2 can pass through the pole hole 112 and be fixed at the pole hole 112.

[0041] It should be pointed out that in the related art, there is a fitting gap between the pole and the substrate, that is, there is a fitting gap between the pole and the pole hole, and the electrolyte or water can flow into the pole from the fitting gap, causing a micro short circuit or corrosion of the pole.

[0042] The first seal 41 is at least partially disposed in the groove 111. For example, the first seal 41 can be entirely disposed in the groove 111; for another example, the first seal 41 can be partially disposed in the groove 111. The first insulating member 31 is disposed on the side of the first surface 11, the pole 2 can pass through the first insulating member 31, and the first insulating member 31 can press against the first seal 41. That is to say, the first insulating member 31 has a through hole, the pole 2 can pass through the through hole on the first insulating member 31 and through the first insulating member 31, the pole 2 can pass through the pole hole 112, the groove 111, the first seal 41 and the first insulating member 31 in sequence, there is a fitting gap between the pole 2 and the groove 111 and there is a fitting gap between the pole 2 and the pole hole 112, by arranging the first seal 41 in the groove 111, it is possible to reduce the amount of liquid such as electrolyte or water passing through the fitting gap, thereby improving the sealing effect. The first insulating member 31 can not only isolate the electrical connection between the pole 2 and the outside, thereby improving safety; the first insulating member 31 can also fix the first sealing member 41 in the groove 111 of the substrate 1, thereby improving the reliability and stability of the connection between the first sealing member 41 and the substrate 1. In addition, the provision of the groove 111 can, on the one hand, indicate the installation position of the first sealing member 41, thereby assisting the installation of the first sealing member 41; on the other hand, the groove 111 can make the first sealing member 41 be placed more stably, thereby improving the stability and reliability of the connection between the substrate 1 and the first sealing member 41.

[0043] The second seal 42 is arranged at the matching position between the pole hole 112 and the pole 2, and the second seal 42 partially extends to the second surface 12 side, and the first seal 41 is pressed and matched with the second seal 42. The second seal 42 can seal the matching gap on the second surface 12 side of the substrate 1, and can reduce the liquid such as electrolyte or water passing through the matching gap, thereby improving the sealing effect.

[0044] In the related art, in order to reduce the probability of electrolyte or water leaking from the fitting gap or entering the inside of the pole, a seal is set between the pole and the pole hole. In some technical solutions, the seal is only set on the first surface; in some technical solutions, the seal is only set on the second surface; in some technical solutions, seals are provided on both the first surface and the second surface, but the seal on the first surface is not provided with an insulating member. Different from the prior art, the first seal 41 of the present application is arranged between the first insulating member 31 and the substrate 1. On the one hand, the first insulating member 31 isolates the electrical connection between the pole 2 and the outside to improve safety. On the other hand, the first insulating member 31 can fix the first seal 41 in the groove 111 of the substrate 1 to improve the reliability and stability of the connection between the first seal 41 and the substrate 1.

[0045] Another difference from the prior art is that a portion of the second seal 42 is arranged between the pole 2 and the pole hole 112. This portion of the second seal 42 is pressed and fitted with the first seal 41 on the first surface 11 side, which can enhance the sealing effect of the second seal 42 and the first seal 41. Another portion of the second seal 42 extends to the second surface 12 side, thereby reducing the leakage of electrolyte or liquid from the fitting gap on the second surface 12 side to the pole 2, thereby improving the sealing effect.

[0046] Optionally, the first sealing member 41 and the second sealing member 42 may be rubber members, silicone members, etc.

[0047] According to the cover plate assembly 100 of the embodiment of the utility model, the pole 2 can pass through the second seal 42, the substrate 1, the first seal 41 and the first insulating member 31 in sequence. The first seal 41 is arranged between the first insulating member 31 and the substrate 1, which can reduce the leakage of electrolyte and water from the first surface 11 of the substrate 1 to the pole 2; the second seal 42 is arranged between the substrate 1 and the pole 2, which can reduce the leakage of electrolyte and water from the second surface 12 of the substrate 1 to the pole 2, thereby improving the sealing of the cover plate assembly 100, and effectively preventing liquids such as electrolyte and water from entering the pole 2 through the matching gap to cause micro short circuit, corrosion or affect the battery resistance. At the same time, the second seal 42 and the first seal 41 are pressed and matched, which can enhance the sealing effect of the second seal 42 and the first seal 41.

[0048] like Figure 1-Figure 4 As shown, for example, the cover plate assembly 100 includes two poles 2. One pole 2 is positively charged and is a positive pole; the other pole 2 is negatively charged and is a negative pole. Optionally, the cover plate assembly 100 includes a substrate 1, and the positive pole and the negative pole can be arranged on the same substrate 1 at the same time.

[0049] Optionally, the cap plate assembly 100 includes two substrates 1 , the positive electrode column is arranged on one substrate 1 , and the negative electrode column is arranged on the other substrate 1 .

[0050] like Figure 4 As shown, in some embodiments, the initial thickness of the first sealing member 41 is greater than the depth of the groove 111, and the first sealing member 41 is located between the first insulating member 31 and the groove 111 of the substrate 1. After the cover plate assembly 100 is assembled as one, the first insulating member 31 can compress the first sealing member 41, and the first sealing member 41 is partially compressed and located in the groove 111, which can improve the sealing effect of the first sealing member 41 on the fitting gap between the first insulating plate and the substrate 1.

[0051] For example, the first sealing member 41 is configured as a first sealing ring. After the cover plate assembly 100 is assembled as a whole, the compression amount of the first sealing ring is at least 30%. The thickness of the first sealing ring when not compressed is H1; after the cover plate assembly 100 is assembled, the first sealing ring is compressed, and the thickness of the first sealing ring is H2; the thickness change is δH=H1-H2, and the value of δH / H1 is at least 30% and not more than 50%. Optionally, the value of δH / H1 can be 31%, 34%, 40%, 50%, etc.

[0052] like Figure 1 and Figure 4 As shown, in some embodiments, the pole 2 includes a pole body 21 and a pole extension 22, and the pole body 21 is connected to the pole extension 22. The pole extension 22 is arranged in the pole hole 112, and the pole extension 22 can extend out of the first surface 11, and the pole extension 22 can be electrically connected to the outside of the battery; the pole body 21 is located on the side of the second surface 12 away from the first surface 11, and the pole body 21 can be connected to the pole core of the battery; the second seal 42 is at least partially sandwiched between the second surface 12 and the pole body 21, so that the second seal 42 can prevent the electrolyte and water from passing through the matching gap between the substrate 1 and the pole body 21, thereby improving the sealing effect.

[0053] like Figure 1 and Figure 4 As shown, in some embodiments, the second seal 42 includes a seal body 421 and a seal extension 422, and the seal body 421 is connected to the seal extension 422. The seal extension 422 can be arranged in the gap between the pole hole 112 and the pole extension 22, the seal body 421 can seal the gap between the second surface 12 and the pole body 21, and the first seal 41 and the seal extension 422 are pressed and matched, thereby improving the sealing effect between the second seal 42 and the substrate 1, and can effectively prevent liquids such as electrolyte and water from entering the pole 2 through the matching gap to cause micro short circuit, corrosion or affect the battery resistance.

[0054] like Figure 1 and Figure 4 As shown, for example, the pole 2 includes a connected pole body 21 and a pole extension 22, and the second seal 42 includes a connected seal body 421 and a seal extension 422. The seal body 421 can be pressed between the substrate 1 and the pole body 21, which can not only fix the seal body 421, improve the stability and reliability of the assembly, but also reduce the liquid passing through the matching gap; the seal extension 422 can be arranged in the gap between the pole extension 22 and the pole hole 112, so as to seal the matching gap and improve the sealing effect.

[0055] like Figure 1 , Figure 3 and Figure 4 As shown, in some embodiments, the first seal 41 is annular, and the seal extension 422 is sleeved on the outer periphery of the pole extension 22. The first seal 41 is sleeved on the outer periphery of the seal extension 422, which can achieve 360° all-round sealing, effectively preventing liquids such as electrolyte and water from entering the interior of the pole 2 through the fitting gap to cause micro-short circuits, corrosion or affect the battery resistance.

[0056] Optionally, in some embodiments not shown in the figures, the lower surface of the first sealing member 41 may be press-fitted with the top surface of the sealing member extension portion 422 .

[0057] like Figure 1 , Figure 3 and Figure 4 As shown, in some embodiments, the cover plate assembly 100 also includes a second insulating member 32, which is arranged on the side of the second surface 12, and the second insulating member 32 is at least partially sandwiched between the second surface 12 and the pole body 21. For example, the second insulating member 32 can be partially sandwiched between the second surface 12 and the pole body 21. For another example, the second insulating member 32 can be entirely assumed to be between the second surface 12 and the pole body 21; the second insulating member 32 can isolate the electrical connection of the pole 2 to improve safety.

[0058] like Figure 1 , Figure 3 and Figure 4 As shown, in some specific embodiments, the second insulating member 32 includes a second insulating member body 321, and the second insulating member body 321 is sandwiched between the second surface 12 and the pole body 21. The second insulating member body 321 is provided with a through hole corresponding to the second sealing member 42 to pass the second sealing member 42, so that there is a matching gap between the through hole and the second sealing member 42. The thickness of the second insulating member body 321 is less than the initial thickness of the sealing member body 421. When the cover plate assembly 100 is installed as a whole, the thickness of the sealing member body 421 is greater than the thickness of the second insulating member body 321. The sealing member body 421 can also be compressed to the same thickness as the second insulating member body 321. The sealing member body 421 can be sandwiched between the substrate 1 and the pole body 21, so as to seal the matching gap between the second insulating member body 321 and the second sealing member 42, and then seal the gap between the pole 2 and the second insulating plate, thereby improving the sealing effect.

[0059] like Figure 1 , Figure 3 and Figure 4 As shown, for example, the second insulating member 32 further includes a second insulating member extending portion 322 , which is disposed along the outer periphery of the second insulating member body 321 and extends along a side away from the substrate 1 .

[0060] like Figure 1-Figure 4 As shown, in some embodiments, the cover plate assembly 100 also includes a clamping piece 5, which is fixed to the pole 2, and the first insulating piece 31 is at least partially clamped between the clamping piece 5 and the substrate 1. By setting the clamping piece 5, the positions of the pole 2 and the first insulating piece 31 can be fixed, thereby improving the reliability and stability of the fixation, and the clamping piece 5 can also make the structure of the cover plate assembly 100 more compact.

[0061] By way of example, the first insulating member 31 is configured as a first insulating plate.

[0062] For example, the pressing member 5 is configured as a pressing plate, and a pressing plate hole is provided at the center of the pressing plate for the pole 2 to pass through. There are many ways to fix the pressing member 5 to the pole 2, such as welding or clamping.

[0063] like Figure 1 , Figure 3 and Figure 4 As shown, for example, the first insulating member 31 includes a first insulating member body 311 and a first insulating member extension 312, and the first insulating member extension 312 is arranged along the outer periphery of the first insulating member body 311. The first insulating member extension 312 extends along a side away from the substrate 1, and the first insulating member body 311 is provided with a through hole for the pole 2 to pass through. The outer contour of the projection of the pressing plate on the first insulating member body 311 is the same as that of the first insulating member extension 312, so that the pressing plate can be clamped in the first insulating member body 311 and the first insulating member extension 312 to achieve the positioning of the pressing plate.

[0064] like Figure 1 , Figure 3 and Figure 4 As shown, in some embodiments, the number of grooves 111 on the substrate 1 is one or two. When two poles 2 are provided on the substrate 1, the number of grooves 111 on the substrate 1 is two; when only one pole 2 is provided on the substrate 1, the number of grooves 111 on the substrate 1 is one.

[0065] The battery according to the embodiment of the utility model comprises a shell body, wherein the shell body has an open end;

[0066] According to the cover plate assembly 100 of the embodiment of the present invention, the cover plate assembly 100 can cover the open end of the housing body.

[0067] According to the battery of the embodiment of the utility model, by setting the above-mentioned cover plate assembly 100, the pole 2 can pass through the second seal 42, the substrate 1, the first seal 41 and the first insulating member 31 in sequence. The first seal 41 is arranged between the first insulating member 31 and the substrate 1, which can reduce the leakage of electrolyte and water from the first surface 11 of the substrate 1 to the pole 2; the second seal 42 is arranged between the substrate 1 and the pole 2, which can reduce the leakage of electrolyte and water from the second surface 12 of the substrate 1 to the pole 2, thereby improving the sealing of the cover plate assembly 100, and effectively preventing liquids such as electrolyte and water from entering the pole 2 through the matching gap to cause micro short circuit, corrosion or affect the battery resistance. At the same time, the second seal 42 and the first seal 41 are pressed and matched, which can enhance the sealing effect of the second seal 42 and the first seal 41.

[0068] The energy storage system according to the embodiment of the utility model includes the battery according to the embodiment of the utility model.

[0069] According to the energy storage system of the embodiment of the utility model, by using the above-mentioned battery, the pole 2 can pass through the second seal 42, the substrate 1, the first seal 41 and the first insulating member 31 in sequence. The first seal 41 is arranged between the first insulating member 31 and the substrate 1, which can reduce the leakage of electrolyte and water from the first surface 11 of the substrate 1 to the pole 2; the second seal 42 is arranged between the substrate 1 and the pole 2, which can reduce the leakage of electrolyte and water from the second surface 12 of the substrate 1 to the pole 2, thereby improving the sealing of the cover assembly 100, and effectively preventing liquids such as electrolyte and water from entering the pole 2 through the matching gap to cause micro-short circuits, corrosion or affect the battery resistance. At the same time, the second seal 42 and the first seal 41 are pressed and matched, which can enhance the sealing effect of the second seal 42 and the first seal 41.

[0070] A photovoltaic power generation system according to an embodiment of the utility model includes a battery according to an embodiment of the utility model.

[0071] According to the photovoltaic power generation system of the embodiment of the utility model, by using the above-mentioned battery, the pole 2 can pass through the second seal 42, the substrate 1, the first seal 41 and the first insulating member 31 in sequence. The first seal 41 is arranged between the first insulating member 31 and the substrate 1, which can reduce the leakage of electrolyte and water from the first surface 11 of the substrate 1 to the pole 2; the second seal 42 is arranged between the substrate 1 and the pole 2, which can reduce the leakage of electrolyte and water from the second surface 12 of the substrate 1 to the pole 2, thereby improving the sealing of the cover assembly 100, and effectively preventing liquids such as electrolyte and water from entering the pole 2 through the matching gap to cause micro short circuit, corrosion or affect the battery resistance. At the same time, the second seal 42 and the first seal 41 are pressed and matched, which can enhance the sealing effect of the second seal 42 and the first seal 41.

[0072] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0073] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0074] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0075] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A cover plate assembly, characterized in that: include: A substrate, the substrate having a first surface and a second surface disposed opposite to each other, the first surface being provided with a groove sunken toward the second surface, the bottom of the groove being provided with a pole hole penetrating to the second surface; A pole, wherein the pole hole is passed through the pole; a first sealing member, the first sealing member being at least partially disposed in the groove; a first insulating member, the first insulating member being arranged on the first surface side, the pole passing through the first insulating member, and the first insulating member pressing against the first sealing member; The second seal is arranged at the matching position between the pole hole and the pole, and the second seal partially extends to the second surface side, and the first seal is press-fitted with the second seal.

2. The cover plate assembly according to claim 1, characterized in that: The initial thickness of the first seal is greater than the depth of the groove.

3. The cover plate assembly according to claim 1 or 2, characterized in that: The pole includes a connected pole body and a pole extension, the pole extension is passed through the pole hole and extends out of the first surface, the pole body is located on the side of the second surface away from the first surface, and the second seal is at least partially sandwiched between the second surface and the pole body.

4. The cover plate assembly according to claim 3, characterized in that: The second seal comprises a seal body and a seal extension portion connected to each other. The seal extension portion is arranged in the gap between the pole hole and the pole body. The seal body seals the gap between the second surface and the pole body. The first seal is pressed against the seal extension portion.

5. The cover plate assembly according to claim 4, characterized in that: The first seal is annular in shape, the seal extension portion is sleeved around the outer periphery of the pole extension portion, and the first seal is sleeved around the outer periphery of the seal extension portion.

6. The cover plate assembly according to claim 4, characterized in that: The cover plate assembly further includes a second insulating member, which is disposed on the second surface side and is at least partially sandwiched between the second surface and the pole body.

7. The cover plate assembly according to claim 6, characterized in that: The second insulating member includes a second insulating member body, the second insulating member body is sandwiched between the second surface and the pole body, and the thickness of the second insulating member body is smaller than the initial thickness of the sealing member body.

8. The cover plate assembly according to claim 1, characterized in that: The cover plate assembly further includes a pressing member, which is fixed to the pole, and the first insulating member is at least partially sandwiched between the pressing member and the base plate.

9. The cover plate assembly according to claim 1, characterized in that: The number of the grooves on the substrate is one or two.

10. A battery, characterized in that: include: a housing body having an open end; The cover plate assembly according to any one of claims 1 to 9 is suitable for covering the open end of the shell body.

11. An energy storage system, characterized in that: Comprising the battery as claimed in claim 10.

12. A photovoltaic power generation system, characterized in that: Comprising the battery as claimed in claim 10.

Images