Bar-shaped battery
By opening a housing cavity on the side of the housing of the strip battery, the problems of poor welding and high production costs of traditional strip batteries are solved, and more efficient production and better finished product quality are achieved.
Patent Information
- Application Number
- CN202411628837.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2025-03-18
AI Technical Summary
Traditional long strip batteries have welding points or conductive terminals at both ends, resulting in poor welding, high production process requirements, low production efficiency, poor quality of finished products and high cost.
A strip-shaped battery is designed, with a receiving cavity in the middle of the housing, and an opening penetrates through the side. The battery cell is arranged in the receiving cavity. The first electrode ear is welded to the housing and the second electrode ear is to achieve electrical connection.
By opening the opening on the side of the shell, end welding is avoided, process is simplified, production efficiency is improved, production costs are reduced, and finished product quality is improved.
Smart Images
Figure CN119650976A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of batteries, and in particular to a strip battery. Background Art
[0002] With the rapid development of electronic products, there are more and more forms of electronic products to meet the needs of different consumers. As a key component of electronic products, batteries have increasingly stringent requirements on their external dimensions. Among them, bar batteries are long strip batteries. They are designed to be adapted for use in electronic products with specific needs. Bar batteries have the advantages of being convenient to store and transport, easy to install and use, and are widely used in a variety of electronic products.
[0003] However, due to the long strip shape of the battery, the internal space of the battery is long and narrow, and the width is relatively narrow, traditional long strip batteries usually have welding points or conductive terminals at both ends to achieve electrical connection with the internal battery cells for energization, but the two ends of the long strip battery are narrow, not easy to process and shape, and have high requirements on the process, and are prone to poor welding. In other words, traditional long strip batteries have high requirements on the production process, low manufacturing efficiency, poor quality of finished products, and high cost of manufacturing long strip batteries. Therefore, it is necessary to provide a strip battery with a simple structure and easy assembly to improve the manufacturing efficiency of the strip battery and reduce the production cost. Summary of the invention
[0004] Based on this, it is necessary to provide a strip battery.
[0005] The technical solution of the present invention to solve the above technical problem is as follows: a strip battery, comprising:
[0006] A housing, wherein a receiving cavity is provided in the middle of the housing, and the receiving cavity has an opening, and the opening is arranged through a side surface of the housing;
[0007] a cover plate, the cover plate being connected to the housing and used for sealing and closing the opening; and
[0008] A battery cell is arranged in the accommodating cavity, and a first pole ear and a second pole ear are respectively arranged at the first end and the second end of the battery cell, the first pole ear is electrically connected to the shell, and the second pole ear is electrically connected to the cover plate.
[0009] In one embodiment, the first electrode tab is welded to the first end portion of the housing.
[0010] In one embodiment, a sealing member is further included, and a liquid injection hole is opened at the second end of the shell, and the liquid injection hole is communicated with the accommodating cavity, and the sealing member is used to seal and close the liquid injection hole.
[0011] In one embodiment, a conductive terminal is disposed on the first surface of the cover plate, and the conductive terminal is electrically connected to the second electrode tab.
[0012] In one embodiment, a protection component is further included, the protection component includes a first seal and a second seal, the cover plate is provided with a connecting hole, the first seal and the second seal are respectively connected to the first surface and the second surface of the cover plate, one of the first seal and the second seal is provided with a protrusion, the first seal and the second seal are respectively provided with a first through hole and a second through hole, the protrusion is connected to the inner side wall of the connecting hole, the connecting hole is connected to the first through hole and the second through hole, respectively, and the conductive terminal passes through the first through hole, the connecting hole and the second through hole to be electrically connected to the second pole ear.
[0013] In one embodiment, the protection component also includes a connecting piece, which is arranged in the accommodating cavity, the first surface of the connecting piece is connected to the second sealing member, and the first surface of the connecting piece is electrically connected to the conductive terminal, and the second surface of the connecting piece is electrically connected to the second pole ear.
[0014] In one embodiment, the first surface of the cover plate is provided with a groove, and the conductive terminal is accommodated in the groove.
[0015] In one embodiment, the battery cell is a wound battery cell.
[0016] In one embodiment, a first insulating layer is further included, wherein the first insulating layer is coated on the outside of the first pole tab, and the first pole tab is at least partially protruded from the outside of the first insulating layer.
[0017] In one embodiment, a second insulating layer is further included, wherein the second insulating layer is coated on the outside of the second pole tab, and the second pole tab is at least partially protruded from the outside of the second insulating layer.
[0018] Compared with the prior art, the present invention has at least the following advantages:
[0019] The present invention is provided with a shell with a accommodating cavity. The shell is in the shape of a long strip. An opening is opened on the side of the shell to communicate with the accommodating cavity. The side of the shell is in the length direction of the shell, so as to avoid opening the opening at the two end positions of the shell, and avoid welding and packaging operations on the battery at the ends of the shell. This is beneficial to subsequent welding and packaging operations on the battery at the side of the shell. The side area of the shell is large and convenient for processing and forming. Specifically, the battery cell is accommodated in the accommodating cavity, and then the cover plate is covered on the shell to close the opening, thereby closing the accommodating cavity. Then, the first pole ear and the second pole ear of the battery cell are respectively welded to the shell and the cover plate to achieve electrical connection, thereby realizing the packaging of the strip battery. The opening is opened on the side of the shell, and the welding point of the second pole ear is set on the cover plate, so as to avoid being concentrated at the two end portions of the strip battery. The processing area is large, and the structure is simple, which is easy to assemble and process, which is beneficial to improving the production efficiency of the strip battery and reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 A schematic diagram of the structure of a strip battery according to an embodiment;
[0021] Figure 2 A schematic diagram of a three-dimensional exploded structure of a strip battery according to an embodiment;
[0022] Figure 3 The figure is a schematic cross-sectional view of a strip battery according to an embodiment. DETAILED DESCRIPTION
[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The technical solution of the present invention will be further described below in conjunction with the drawings of the embodiments of the present invention, and the present invention is not limited to the following specific implementation methods.
[0024] It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components. In the description of the present invention, it should be understood that if the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom" and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0025] See also Figure 1 , Figure 2 and Figure 3In one embodiment, a bar-shaped battery 10 is provided, comprising a housing 100, a cover plate 200 and a battery cell 300. A receiving cavity 110 is provided in the middle of the housing 100, and the receiving cavity 110 has an opening, and the opening is arranged through the side of the housing 100. The cover plate 200 is connected to the housing 100, and the cover plate 200 is used to seal and close the opening. The battery cell 300 is arranged in the receiving cavity 110, and a first pole ear 310 and a second pole ear 320 are respectively provided at the first end and the second end of the battery cell 300, the first pole ear 310 is electrically connected to the housing 100, and the second pole ear 320 is electrically connected to the cover plate 200.
[0026] It should be noted that, in the present embodiment, the shell 100 is a steel shell, the shell 100 is a hollow long strip structure, and the cross-sectional shape of the shell 100 is set to be square, and the side of the shell 100 is the surface of the shell 100 in the length direction. By opening the opening on the side of the shell 100, it is beneficial to increase the diameter of the opening, so that the battery cell 300 can be better assembled into the accommodating cavity 110 through the opening, which is beneficial to reduce the difficulty of the processing technology. The shape of the cover plate 200 is adapted to the shape of the opening. By covering the cover plate 200 on the opening, and then sealing and welding the cover plate 200 and the inner side wall of the opening, the opening can be sealed. Thereby, the sealed packaging of the battery cell 300 is achieved. At the same time, the first pole ear 310 and the second pole ear 320 of the battery cell 300 are respectively used as the positive pole ear and the negative pole ear of the battery cell 300, and are used to be electrically connected to the positive and negative electrodes of the external power unit, so as to achieve power supply. The first pole ear 310 and the second pole ear 320 are respectively welded to the outer shell 100 and the cover plate 200, so as to achieve the first pole ear 310 and the second pole ear 320 are respectively electrically connected to the outer shell 100 and the cover plate 200. The welding points are respectively arranged on the outer shell 100 and the cover plate 200, which can avoid the welding points being concentrated at the end of the outer shell 100, which is beneficial to further reduce the difficulty of the processing technology of the long battery.
[0027] Specifically, the opening is opened on the side of the shell 100, and the opening has a large diameter, so as to avoid welding and packaging operations on the battery at the end of the shell 100, which is beneficial to the subsequent welding and packaging operations on the battery at the side of the shell 100, and is convenient for processing and forming. The battery cell 300 is placed in the accommodating cavity 110, and then the cover plate 200 is covered on the shell 100 to close the opening, thereby closing the accommodating cavity 110, and then the first pole ear 310 and the second pole ear 320 of the battery cell 300 are respectively welded to the shell 100 and the cover plate 200 to achieve electrical connection, thereby realizing the packaging of the bar battery. The opening is opened on the side of the shell 100, and the welding point of the second pole ear 320 is set on the cover plate 200, so as to avoid being concentrated at the two end portions of the bar battery. The processing area is large, and the structure is simple, which is easy to assemble and process, which is beneficial to improving the production efficiency of the bar battery and reducing the production cost.
[0028] In one embodiment, the first pole tab 310 is welded to the first end of the housing 100. It can be understood that the welding point of the first pole tab 310 is set at the end of the first end of the housing 100. Since the housing 100 is in the shape of a long strip, the battery cell 300 is correspondingly set in the shape of a long strip. The first pole tab 310 and the second pole tab 320 of the battery cell 300 are respectively set at both ends of the battery cell 300. After the first pole tab 310 is led out from the end of the battery cell 300, it can be directly welded and connected to the end of the housing 100, which is conducive to shortening the lead-out length of the first pole tab 310 and improving the compactness of the structure of the strip battery. In other words, it is prevented that the first pole tab 310 is too long and that too much space of the accommodating cavity 110 is avoided, thereby improving the space utilization rate of the accommodating cavity 110, ensuring that the battery cell 300 has sufficient accommodating space, and ensuring the battery capacity of the strip battery.
[0029] See also Figure 1 , Figure 2 and Figure 3In one embodiment, a plugging member 400 is further included. A liquid injection hole 120 is provided at the second end of the shell 100. The liquid injection hole 120 is communicated with the accommodating chamber 110. The plugging member 400 is used to seal and close the liquid injection hole 120. It can be understood that the second end of the shell 100 is a second end opposite to the first end. By providing the liquid injection hole 120 at the second end of the shell 100, the electrolyte is injected into the accommodating chamber 110 through the liquid injection hole 120. The electrolyte provides a conductive channel for the lithium ions in the battery cell 300 to realize the charging and discharging function of the battery cell 300. The liquid injection hole 120 is provided at the second end of the shell 100. The second end of the shell 100 is far away from the first pole ear 310. At the same time, the second pole ear 320 is also provided on the side of the shell 100. When injecting liquid, it is possible to avoid affecting the first pole ear 310 and the second pole ear 320, which is beneficial to The safety of the bar battery during assembly and packaging is improved, and at the same time, it is helpful to reduce the difficulty of the processing technology of the bar battery. By providing a sealing member 400, after the injection is completed, the injection hole 120 can be sealed by the sealing member 400 to ensure the sealing of the bar battery. In this embodiment, the welding points of the first pole ear 310, the injection hole 120 and the welding points of the second pole ear 320 are respectively arranged at the two end ends and the side of the shell 100, which can disperse the welding and packaging processing points of the bar battery to avoid concentrated processing in a narrow position, which is helpful to greatly reduce the difficulty of the processing technology of the bar battery, thereby greatly improving the production efficiency of the bar battery.
[0030] See also Figure 1 , Figure 2 and Figure 3 In one embodiment, the first surface of the cover plate 200 is provided with a conductive terminal 210, and the conductive terminal 210 is electrically connected to the second pole ear 320. It can be understood that the first surface of the cover plate 200 is the surface facing away from the accommodating cavity 110, and the conductive terminal 210 is provided, and the conductive terminal 210 is electrically connected to the second pole ear 320. The conductive terminal 210 can be used to electrically connect to an external power unit, which is conducive to a more stable electrical connection between the second pole ear 320 and the external power unit. That is to say, the first pole ear 310 and the second pole ear 320 of the bar battery are electrically connected to the external power unit through the end of the bar battery and the conductive terminal 210, respectively, with good abutment effect, better power supply effect, and better safety.
[0031] See also Figure 1 , Figure 2 and Figure 3In one embodiment, a protection component 500 is further included, wherein the protection component 500 includes a first seal 510 and a second seal 520, the cover plate 200 is provided with a connecting hole 201, the first seal 510 and the second seal 520 are respectively connected to the first surface and the second surface of the cover plate 200, one of the first seal 510 and the second seal 520 is provided with a protrusion 521, the first seal 510 and the second seal 520 are respectively provided with a first through hole 511 and a second through hole 522, the protrusion 521 is connected to the inner side wall of the connecting hole 201, the connecting hole 201 is respectively connected to the first through hole 511 and the second through hole 522, and the conductive terminal 210 is electrically connected to the second pole ear 320 through the first through hole 511, the connecting hole 201 and the second through hole 522.
[0032] It can be understood that by providing the first seal 510 and the second seal 520, the first seal 510 and the second seal 520 are respectively made of insulating sealing materials, for example, the first seal 510 and the second seal 520 can be made of rubber material, so that the sealing and insulation of the first seal 510 and the second seal 520 can be guaranteed. The first seal 510 and the second seal 520 are respectively tightly attached to the first surface and the second surface of the cover plate 200, and are arranged at the connecting hole 201 of the cover plate 200, so that the first through hole 511 and the second through hole 522 of the first seal 510 and the second seal 520 are aligned with the connecting hole 201 up and down. At the same time, the first seal 510 or the second seal 520 is provided with a protrusion 521. In this embodiment, the second seal 520 is provided with a protrusion 521, and the protrusion 521 is aligned with the connecting hole 201. The shapes are adapted, and the protrusion 521 is a hollow structure. The protrusion 521 is used to be set in the connecting hole 201 and covered on the inner wall of the connecting hole 201, which can play a comprehensive insulation role. After the conductive terminal 210 passes through the first through hole 511, the connecting hole 201 and the second through hole 522 in sequence to enter the accommodating cavity 110, it is electrically connected to the second pole ear 320 to achieve circuit connection between the conductive terminal 210 and the second pole ear 320. At the same time, the first sealing member 510 and the second sealing member 520 can be well covered on the outside of the conductive terminal 210, which can play a good sealing and insulation role to avoid leakage and short circuit, thereby greatly improving the safety of the finished bar battery. In addition, the first sealing member 510 and the second sealing member 520 can respectively cover and protect the conductive terminal 210 to a certain extent on the first side and the second side of the cover plate 200, and the overall structural stability of the bar battery is good.
[0033] See also Figure 2 and Figure 3In one embodiment, the protection component 500 further includes a connecting piece 530, the connecting piece 530 is disposed in the accommodating cavity 110, the first surface of the connecting piece 530 is connected to the second sealing member 520, and the first surface of the connecting piece 530 is electrically connected to the conductive terminal 210, and the second surface of the connecting piece 530 is electrically connected to the second pole ear 320. It can be understood that the connecting piece 530 is a metal sheet-like structure, for example, the connecting piece 530 can be made of an aluminum sheet or an alloy steel sheet, and the connecting piece 530 can play a conductive role. Since the second pole ear 320 is a flexible foil structure with poor mechanical strength, by providing the connecting piece 530, the second pole ear 320 and the connecting piece 530 can be welded together first, and then the cover plate 200 is closed on the opening, and then the conductive terminal 210 is inserted, and the conductive terminal 210 is abutted and connected with the connecting piece 530, so that electrical connection is achieved through the connecting piece 530 and the second pole ear 320. The second pole ear 320 can be connected to the shell to avoid direct hard contact between the conductive terminal 210 and the second pole ear 320, which can protect the second pole ear 320 and avoid damage to the pole ear, thereby helping to improve the stability of the overall structure of the strip battery and greatly improving the safety performance of the strip battery. At the same time, the second pole ear 320 can be welded to the connecting piece 530 before entering the shell, so the second pole ear 320 can be accurately welded and the welding difficulty is greatly reduced, thereby greatly reducing the overall production process difficulty of the strip battery, which is beneficial to improving the production efficiency of the strip battery.
[0034] In one embodiment, the first surface of the connecting piece 530 is provided with a heat-conducting layer (not shown), and the heat-conducting layer is an aluminum silicon carbide heat-conducting layer. It can be understood that the aluminum silicon carbide layer is a coating with excellent thermal conductivity and good electrical conductivity. By providing the aluminum silicon carbide heat-conducting layer on the first surface of the connecting piece 530, while ensuring electrical conductivity, it can also play a good directional heat-conducting role, which is conducive to the directional heat conduction inside the accommodating cavity 110 to the external environment. Specifically, when the bar-shaped battery is working, the heat generated by the conduction of the second pole ear 320 can be quickly and directional conducted to the cover plate 200 through the aluminum silicon carbide heat-conducting layer on the first surface of the connecting piece 530, and quickly dissipated to the external environment, avoiding excessive heat inside the bar-shaped battery and overheating, thereby helping to improve the safety performance and service life of the bar-shaped battery.
[0035] See also Figure 2 and Figure 3In one embodiment, the protection component 500 further includes a first insulating gasket 540, a first surface of the first insulating gasket 540 is connected to the connecting piece 530, a second surface of the first insulating gasket 540 is connected to the second pole ear 320, and the first insulating gasket 540 is provided with a through slot 541, and the second pole ear 320 is electrically connected to the connecting piece 530 through the through slot 541. It can be understood that by providing the first insulating gasket 540, the connecting piece 530 and the second pole ear 320 can be insulated, and by providing the through slot 541, the second pole ear 320 can be welded and connected to the connecting piece 530, thereby achieving electrical connection, and at the same time, it can avoid that other parts of the second pole ear 320 are directly connected to the connecting piece 530, avoid leakage short circuit, and have better safety performance.
[0036] See also Figure 2 and Figure 3 In one embodiment, the second insulating gasket 600 and the third insulating gasket 700 are further included, and the second insulating gasket 600 and the third insulating gasket 700 are respectively attached to the first end portion and the second end portion of the battery cell 300. It can be understood that by providing the second insulating gasket 600 and the third insulating gasket 700, the first end portion and the second end portion of the battery cell 300 can be well insulated and protected, and the two ends of the battery cell 300 are prevented from directly contacting the housing 100, thereby avoiding leakage and short circuit, and having good safety performance.
[0037] See also Figure 1 , Figure 2 and Figure 3 In one embodiment, a groove 202 is provided on the first surface of the cover plate 200, and the conductive terminal 210 is accommodated in the groove 202. It can be understood that the cover plate 200 is arranged in a U shape with a groove 202, so that the cover plate 200 can be embedded in the accommodating cavity 110, and at the same time, the conductive terminal 210 can be accommodated in the groove 202 to avoid protruding and being exposed outside the cover plate 200, which can reduce the impact of the conductive terminal 210 caused by the outside, and can play a certain protective role on the conductive terminal 210, which is conducive to improving the structural stability and service life of the strip battery. At the same time, the groove 202 of the cover plate 200 can also be used to accommodate other electrical components of the strip battery, for example, the circuit board of the strip battery can be accommodated in the groove 202, which has a compact structure and is not easily impacted, and the strip battery has good structural stability.
[0038] In one embodiment, the battery cell 300 is a wound battery cell. It is understandable that the battery cell 300 is a wound battery cell, which has a relatively simple preparation process and is a commonly used battery cell type, which is conducive to reducing the overall process difficulty of the bar battery, improving manufacturability, reducing the production cost of the bar battery, and having high production efficiency.
[0039] See also Figure 2 and Figure 3 In one embodiment, the first insulating layer 800 is further included, and the first insulating layer 800 is coated on the outside of the first pole ear 310, and the first pole ear 310 is at least partially protruded outside the first insulating layer 800. It can be understood that by providing the first insulating layer 800, the first insulating layer 800 adopts insulating tape, so that it can be wrapped and adhered to the outside of the first pole ear 310, which is easy to process and shape. The first insulating layer 800 is coated on the outside of the first pole ear 310, and the part of the first pole ear 310 that needs to be welded is exposed, so that the normal welding of the first pole ear 310 is ensured. At the same time, the first pole ear 310 is prevented from being completely exposed in the accommodating cavity 110, which can protect the first pole ear 310. In addition, it can play a good insulating role, avoid the first pole ear 310 from being exposed too much, which is conducive to preventing the first pole ear 310 from leakage and short circuit, thereby greatly improving the overall safety performance of the bar battery.
[0040] See also Figure 2 and Figure 3 In one embodiment, the second insulating layer 900 is further included, and the second insulating layer 900 is coated on the outside of the second pole ear 320, and the second pole ear 320 is at least partially protruded outside the second insulating layer 900. It can be understood that by providing the second insulating layer 900, the second insulating layer 900 adopts insulating adhesive tape, so that it can be wrapped and adhered to the outside of the second pole ear 320, which is easy to process and shape. The second insulating layer 900 is coated on the outside of the second pole ear 320, and the part of the second pole ear 320 that needs to be welded is exposed, so that the normal welding of the second pole ear 320 is ensured. At the same time, the second pole ear 320 is prevented from being completely exposed in the accommodating cavity 110, which can protect the second pole ear 320. In addition, it can play a good insulating role, avoid the second pole ear 320 from being exposed too much, which is conducive to preventing the second pole ear 320 from leakage and short circuit, thereby greatly improving the overall safety performance of the bar battery.
[0041] Compared with the prior art, the present invention has at least the following advantages:
[0042] The present invention is provided with a shell with a accommodating cavity. The shell is in the shape of a long strip. An opening is opened on the side of the shell to communicate with the accommodating cavity. The side of the shell is in the length direction of the shell, so as to avoid opening the opening at the two end positions of the shell, and avoid welding and packaging operations on the battery at the ends of the shell. This is beneficial to subsequent welding and packaging operations on the battery at the side of the shell. The side area of the shell is large and convenient for processing and forming. Specifically, the battery cell is accommodated in the accommodating cavity, and then the cover plate is covered on the shell to close the opening, thereby closing the accommodating cavity. Then, the first pole ear and the second pole ear of the battery cell are respectively welded to the shell and the cover plate to achieve electrical connection, thereby realizing the packaging of the strip battery. The opening is opened on the side of the shell, and the welding point of the second pole ear is set on the cover plate, so as to avoid being concentrated at the two end portions of the strip battery. The processing area is large, and the structure is simple, which is easy to assemble and process, which is beneficial to improving the production efficiency of the strip battery and reducing the production cost.
[0043] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.
[0044] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.
Claims
1. A strip battery, characterized in that: include: A housing, wherein a receiving cavity is provided in the middle of the housing, and the receiving cavity has an opening, and the opening is arranged through a side surface of the housing; a cover plate, the cover plate being connected to the housing and used for sealing and closing the opening; and A battery cell is arranged in the accommodating cavity, and a first pole ear and a second pole ear are respectively arranged at the first end and the second end of the battery cell, the first pole ear is electrically connected to the shell, and the second pole ear is electrically connected to the cover plate.
2. The strip battery according to claim 1, characterized in that: The first electrode tab is welded to the first end portion of the shell.
3. The strip battery according to claim 2, characterized in that: It also includes a blocking piece. The second end of the shell is provided with a liquid injection hole, the liquid injection hole is communicated with the accommodating cavity, and the blocking piece is used to seal and close the liquid injection hole.
4. The strip battery according to claim 1, characterized in that: A conductive terminal is disposed on the first surface of the cover plate, and the conductive terminal is electrically connected to the second electrode tab.
5. The strip battery according to claim 4, characterized in that: It also includes a protection component, which includes a first seal and a second seal, the cover plate is provided with a connecting hole, the first seal and the second seal are respectively connected to the first surface and the second surface of the cover plate, one of the first seal and the second seal is provided with a protrusion, the first seal and the second seal are respectively provided with a first through hole and a second through hole, the protrusion is connected to the inner side wall of the connecting hole, the connecting hole is connected to the first through hole and the second through hole, respectively, and the conductive terminal passes through the first through hole, the connecting hole and the second through hole to be electrically connected to the second pole ear.
6. The strip battery according to claim 5, characterized in that: The protection component also includes a connecting piece, which is arranged in the accommodating cavity, wherein the first surface of the connecting piece is connected to the second sealing member, and the first surface of the connecting piece is electrically connected to the conductive terminal, and the second surface of the connecting piece is electrically connected to the second pole ear.
7. The strip battery according to claim 4, characterized in that: The first surface of the cover plate is provided with a groove, and the conductive terminal is accommodated in the groove.
8. The strip battery according to any one of claims 1 to 7, characterized in that: The battery core is a wound battery core.
9. The strip battery according to any one of claims 1 to 7, characterized in that: It also includes a first insulating layer, which is coated on the outside of the first pole lug, and the first pole lug is at least partially protruded outside the first insulating layer.
10. The strip battery according to any one of claims 1 to 7, characterized in that: It also includes a second insulating layer, which is coated on the outside of the second pole tab, and the second pole tab is at least partially protruded from the outside of the second insulating layer.