Square battery cell protective sleeve

Abstract

The utility model belongs to the field of battery cell protection devices, and particularly relates to a square battery cell protection sleeve, when the square battery cell protection sleeve is used, a square battery cell is placed into a square sleeve body from an opening in the bottom of the square sleeve body, the opening is closed through a bottom cover, and the protection sleeve body protects the outer surface of the square battery cell. And the two-dimensional code arranged on the square sleeve body is used for recording the information of the square battery cell arranged in the protective sleeve body, and the code can be scanned, edited and checked in the subsequent circulation process of the square battery cell. During charging and discharging steps such as formation and capacity grading, the first through hole and the second through hole are opened through the first cover cap and the second cover cap respectively to expose the positive pole and the negative pole of the square battery cell, the whole protective sleeve body does not need to be taken down, and after the charging and discharging steps such as formation and capacity grading are finished, the first through hole and the second through hole are closed through the first cover cap and the second cover cap respectively to expose the positive pole and the negative pole of the square battery cell. And external short circuit and collision between the positive pole and the negative pole are avoided.

Description

Technical Field

[0001] The present application relates to the technical field of battery cell protection devices, and in particular to a square battery cell protection cover. Background Art

[0002] In the current lithium-ion battery manufacturing process, the cell production cycle is about 15-20 days, and it needs to go through different processes. During the cell operation process, the appearance of the cell is often contaminated, affecting the appearance quality of the cell, causing the cell to be scrapped due to appearance problems, seriously affecting the qualification rate and production efficiency of the manufacturing process. Utility Model Content

[0003] The embodiment of the present application provides a square battery cell protective cover, which aims to solve the technical problem that during the battery cell production process, the flow between different processes may cause bumps on the appearance of the battery cell, thereby affecting the appearance quality of the battery cell.

[0004] To achieve the above objectives, the present application provides a square battery cell protective cover, comprising:

[0005] The protective cover body includes a square cover and a bottom cover, the bottom of the square cover is open and forms an opening, the square battery cell can be placed in the square cover through the opening, the top of the square cover is provided with a first through hole and a second through hole corresponding to the positive and negative poles of the square battery cell, respectively, a first cap for opening and closing the first through hole is connected near the first through hole, and a second cap for opening and closing the second through hole is connected near the second through hole; the bottom cover is connected to the square cover on one side of the opening, and the bottom cover is used to open and close the opening; and

[0006] A two-dimensional code is provided on the square cover body, and the two-dimensional code is used to record information of the square battery cell installed in the protective cover body.

[0007] Optionally, the bottom cover includes a rectangular cover body and a connecting piece that are connected to each other, the rectangular cover body is adapted to the shape of the opening, one side of the rectangular cover body in the length direction is rotatably connected to the square sleeve on one side of the opening, and the connecting piece is rotatably connected to the other side of the rectangular cover body in the length direction, and the connecting piece is used to connect to the side of the square sleeve after the rectangular cover body closes the opening.

[0008] Optionally, a plurality of connection holes are arranged on the connection plate at intervals along the length direction of the rectangular cover body, and a plurality of connection protrusions are arranged on the side of the square sleeve at intervals along the length direction of the opening, and the plurality of connection protrusions can be respectively and one by one inserted into the plurality of connection holes.

[0009] Optionally, a first protrusion and a second protrusion are respectively provided near the first through hole and the second through hole, and a first protrusion and a second protrusion are respectively provided on the edges of the first cap and the second cap, and the first protrusion is provided with a first snap-fitting hole for the first protrusion to be snapped into, and the second protrusion is provided with a second snap-fitting hole for the second protrusion to be snapped into.

[0010] Optionally, the square sleeve and the bottom cover are an integrated structure.

[0011] Optionally, the protective cover body is made of plastic, silicone or rubber.

[0012] Optionally, a relief hole corresponding to the liquid injection hole on the square battery core is provided on the top of the square sleeve between the first through hole and the second through hole.

[0013] Optionally, the QR code is arranged on the top of the square sleeve.

[0014] Optionally, a note bag for placing paper labels is provided on the side of the square sleeve.

[0015] Optionally, the side and / or top of the square sleeve are further provided with a thermochromic coating.

[0016] The beneficial effect of the square battery cell protective cover provided by the present application is that: compared with the prior art, when the square battery cell protective cover of the present application is used, the square battery cell is placed into the square case from the opening at the bottom of the square case, and then the opening is closed through the bottom cover, and the outer surface of the square battery cell is protected by the protective cover body to avoid bumps and wear on the appearance of the square battery cell during the process of each process flow. The QR code provided on the square case is used to record the information of the square battery cell loaded into the protective cover body, and each process staff can scan the code to edit and view it during the subsequent circulation of the square battery cell. When performing charge and discharge steps such as capacity conversion, the first through hole and the second through hole are opened respectively by the first cap and the second cap to expose the positive and negative poles of the square battery cell without removing the entire protective cover body. After the charge and discharge steps such as capacity conversion are completed, the first through hole and the second through hole are closed respectively by the first cap and the second cap to avoid external short circuit and collision between the positive and negative poles. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] in:

[0019] Figure 1 Schematic diagram showing an embodiment of the present application in which the upper opening, the first through hole, and the second through hole of the square battery cell protective cover are all in an open state;

[0020] Figure 2 This is a schematic diagram showing an embodiment of the present application in which the opening, the first through hole and the second through hole on the square battery cell protective cover are all in a closed state.

[0021] Description of main component symbols:

[0022] 100, protective cover body; 110, square cover body; 1101, first through hole; 1102, second through hole; 1103, avoidance hole; 111, connecting protrusion; 112, first protrusion; 113, second protrusion; 120, bottom cover; 121, rectangular cover body; 122, connecting piece; 1221, connecting hole; 130, first cover cap; 131, first protrusion; 1311, first engaging hole; 140, second cover cap; 141, second protrusion; 1411, second engaging hole;

[0023] 200, QR code;

[0024] 300, note bag;

[0025] 400. Thermochromic coating. DETAILED DESCRIPTION

[0026] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present application. However, the present application may be implemented in many other forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present application.

[0027] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0028] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] It should also be noted that, in the embodiments of the present application, the same figure mark represents the same component or the same part. For the same parts in the embodiments of the present application, the figure may only mark one of the parts or components as an example. It should be understood that the figure mark also applies to other identical parts or components.

[0032] The embodiment of the present application provides a square battery cell protective cover, such as Figure 1-Figure 2 As shown, the square battery cell protective cover includes a protective cover body 100 and a QR code 200. The protective cover body 100 includes a square cover body 110 and a bottom cover 120. The bottom of the square cover body 110 is open and forms an opening. The square battery cell (not shown in the figure) can be placed in the square cover body 110 through the opening. The top of the square cover body 110 is provided with a first through hole 1101 and a second through hole 1102 corresponding to the positive and negative poles of the square battery cell, respectively. A first cap 130 for opening and closing the first through hole 1101 is connected near the first through hole 1101, and a second cap 140 for opening and closing the second through hole 1102 is connected near the second through hole 1102; the bottom cover 120 is connected to the square cover body 110 on one side of the opening, and the bottom cover 120 is used to open and close the opening. The QR code 200 is set on the square cover body 110, and the QR code 200 is used to record the information of the square battery cell installed in the protective cover body 100.

[0033] In the embodiment of the present application, when the square battery cell protective cover is in use, the square battery cell is placed into the square cover body 110 from the opening at the bottom of the square cover body 110, and then the opening is closed by the bottom cover 120. The outer surface of the square battery cell is protected by the protective cover body 100 to prevent the square battery cell from being bumped and worn on the appearance of the square battery cell during the flow of various processes. The QR code 200 set on the square cover body 110 is used to record the information of the square battery cell installed in the protective cover body 100. During the subsequent flow of the square battery cell, each process staff can scan the code to edit and view it. When performing charge-discharge steps such as conversion and capacity division, the first through hole 1101 and the second through hole 1102 are opened respectively by the first cap 130 and the second cap 140, so that the positive and negative poles of the square battery cell can be exposed accordingly without removing the entire protective cover body 100. After the charge-discharge steps such as conversion and capacity division are completed, the first through hole 1101 and the second through hole 1102 are opened and closed respectively by the first cap 130 and the second cap 140 to avoid external short circuit and collision between the positive and negative poles.

[0034] In one embodiment, if Figure 1-Figure 2 As shown, the bottom cover 120 includes a rectangular cover body 121 and a connecting piece 122 that are connected to each other. The rectangular cover body 121 is adapted to the shape of the opening. One side of the rectangular cover body 121 in the length direction is rotatably connected to the square sleeve 110 on one side of the opening, and the connecting piece 122 is rotatably connected to the other side of the rectangular cover body 121 in the length direction. The connecting piece 122 is used to connect to the side of the square sleeve 110 after the rectangular cover body 121 closes the opening.

[0035] Specifically, the square sleeve 110, the rectangular cover 121 and the connecting piece 122 are an integrated structure. The connection between the rectangular cover 121 and the square sleeve 110 has an indentation / fold, and the rectangular cover 121 can rotate relative to the square sleeve 110 around the indentation / fold. The connection between the rectangular cover 121 and the connecting piece 122 also has an indentation / fold, and the connecting piece 122 can rotate relative to the rectangular cover 121 around the indentation / fold.

[0036] In a specific embodiment, a plurality of connection holes 1221 are arranged on the connection piece 122 at intervals along the length direction of the rectangular cover body 121, and a plurality of connection protrusions 111 are arranged on the side of the square sleeve 110 at intervals along the length direction of the opening, and the plurality of connection protrusions 111 can be respectively and one by one inserted into the plurality of connection holes 1221.

[0037] After the rectangular cover 121 closes the opening at the bottom of the square sleeve 110, the connecting piece 122 is connected to the side of the square sleeve 110 by snapping together the connecting hole 1221 on the connecting piece 122 and the connecting protrusion 111 on the side of the square sleeve 110. The structure is simple and the connection and disassembly are convenient.

[0038] Preferably, the connecting protrusion 111 and the square sleeve body 110 are an integrated structure.

[0039] In one implementation, the connecting protrusion 111 includes a connecting post connected to the square sleeve 110 and a ball head integrally formed at the front end of the connecting post. The diameter of the connecting post is smaller than the diameter of the connecting hole 1221 on the connecting piece 122, the length of the connecting post is greater than the thickness of the connecting piece 122, and the diameter of the ball head is slightly larger than the diameter of the connecting hole 1221. This arrangement prevents the ball head from falling off after passing through the connecting hole 1221 on the connecting piece 122 under the action of an external force.

[0040] In one embodiment, if Figure 1 As shown, a first protrusion 112 and a second protrusion 113 are respectively provided near the first through hole 1101 and the second through hole 1102, and a first protrusion 131 and a second protrusion 141 are respectively provided at the edges of the first cover cap 130 and the second cover cap 140. The first protrusion 131 is provided with a first snap-fitting hole 1311 for the first protrusion 112 to be snapped into, and the second protrusion 141 is provided with a second snap-fitting hole 1411 for the second protrusion 113 to be snapped into.

[0041] like Figure 2 As shown, when the square battery cell in the protective cover body 100 does not need to be charged or discharged, the first cap 130 and the second cap 140 are respectively covered on the positive and negative poles on the top of the square battery cell, and then the first snap-fitting hole 1311 on the first protrusion 131 is snap-fitted with the first protrusion 112, and the second snap-fitting hole 1411 on the second protrusion 141 is snap-fitted with the second protrusion 113, so as to fix the first cap 130 and the second cap 140.

[0042] Specifically, the shapes and sizes of the first protrusion 112 and the second protrusion 113 may be designed with reference to the above-mentioned connecting protrusion 111 to improve the stability of the first cover cap 130 and the second cover cap 140 after closing.

[0043] In one embodiment, the square cover body 110 and the bottom cover 120 are an integrated structure. Specifically, the protective cover body 100 can be made of plastic, silicone or rubber, preferably made of a soft and elastic material such as silicone or rubber.

[0044] In one embodiment, if Figure 1 and Figure 2 As shown, a relief hole 1103 corresponding to the liquid injection hole on the square battery cell is provided on the top of the square casing 110 between the first through hole 1101 and the second through hole 1102 .

[0045] The liquid injection hole on the top of the square battery cell can be exposed from the avoidance hole 1103, and the liquid injection and sealing can be carried out from the avoidance hole 1103 without removing the protective cover body 100.

[0046] In one embodiment, if Figure 1-Figure 2 As shown, the QR code 200 is set on the top of the square sleeve 110. It is set at this position to facilitate the staff to scan and identify it through a barcode scanner during the circulation process.

[0047] In one embodiment, if Figure 1-Figure 2 As shown, a note bag 300 for placing a paper label is provided on the side of the square housing 110. The note bag 300 is used to place a paper label, which is used to record the information of the square battery cell and cooperate with the QR code 200 to improve the accuracy of the information.

[0048] In one embodiment, if Figure 1-Figure 2 As shown, the side and / or top of the square casing 110 is further provided with a thermochromic coating 400 .

[0049] It can be understood that the thermochromic coating 400 will change color due to temperature changes. Therefore, a thermochromic coating 400 is set on the side and / or top of the square sleeve 110. When the temperature of the battery cell is abnormal, it can be visually checked through the thermochromic coating 400, which is convenient for timely detection and processing.

[0050] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The above embodiments merely illustrate several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A square battery cell protective cover, characterized in that: include: The protective cover body includes a square cover and a bottom cover, the bottom of the square cover is open and forms an opening, the square battery cell can be placed in the square cover through the opening, the top of the square cover is provided with a first through hole and a second through hole corresponding to the positive and negative poles of the square battery cell, respectively, a first cap for opening and closing the first through hole is connected near the first through hole, and a second cap for opening and closing the second through hole is connected near the second through hole; the bottom cover is connected to the square cover on one side of the opening, and the bottom cover is used to open and close the opening; and A QR code is provided on the square cover body, wherein the QR code is used to record information of the square battery cell installed in the protective cover body; The bottom cover includes a rectangular cover body and a connecting piece connected to each other, wherein the rectangular cover body is adapted to the shape of the opening, one side of the rectangular cover body in the length direction is rotatably connected to the square sleeve body on one side of the opening, and the connecting piece is rotatably connected to the other side of the rectangular cover body in the length direction, and the connecting piece is used to connect to the side of the square sleeve body after the rectangular cover body closes the opening; The protective cover body is made of plastic, silicone or rubber.

2. The square battery cell protective cover according to claim 1, characterized in that: The connecting piece is provided with a plurality of connecting holes at intervals along the length direction of the rectangular cover body, and the side surface of the square sleeve is provided with a plurality of connecting protrusions at intervals along the length direction of the opening. The plurality of connecting protrusions can be respectively and one by one inserted into the plurality of connecting holes.

3. The square battery cell protective cover according to claim 1, characterized in that: A first protrusion and a second protrusion are respectively provided near the first through hole and the second through hole, and a first convex piece and a second convex piece are respectively provided at the edges of the first cover cap and the second cover cap. The first convex piece is provided with a first snap-fitting hole for the first protrusion to be snapped into, and the second convex piece is provided with a second snap-fitting hole for the second protrusion to be snapped into.

4. The square battery cell protective cover according to claim 1, characterized in that: The square sleeve and the bottom cover are an integrated structure.

5. The square battery cell protective cover according to claim 1, characterized in that: A relief hole corresponding to the liquid injection hole on the square battery core is provided on the top of the square sleeve between the first through hole and the second through hole.

6. The square battery cell protective cover according to claim 1, characterized in that: The two-dimensional code is arranged on the top of the square sleeve.

7. The square battery cell protective cover according to claim 1, characterized in that: A note bag for placing paper labels is provided on the side of the square sleeve.

8. The square battery cell protective cover according to claim 1, characterized in that: The side and / or top of the square sleeve is also provided with a thermochromic coating.

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