A single cell and a battery pack

Abstract

The application provides a single battery and a battery pack, and belongs to the technical field of batteries. The single battery comprises a shell, a top cover, an electrode assembly, a connecting piece and an electric control element; the top cover is connected with one end of the shell along a first direction, and the top cover is provided with a penetrating mounting hole; the electrode assembly is arranged in the shell; the electric control element is arranged in the shell, and the electric control element comprises a detection element and a conductive lead wire connected with each other, and the detection element is connected with the electrode assembly; the connecting piece comprises a first connecting part, a second connecting part and a sealing piece; the first connecting part is connected with the top cover, the second connecting part is electrically connected with the conductive lead wire; the sealing piece is sleeved outside the first connecting part, a part of the sealing piece is arranged in the mounting hole, and the sealing piece abuts against the first connecting part and the second connecting part along the first direction. The single battery provided by the application guarantees that the internal conductive lead wire effectively extends out, guarantees the sealing quality of the mounting hole by the connecting piece, and guarantees the reliability of the single battery in the transportation and test process.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a single cell battery and a battery pack. Background Technology

[0002] To monitor the internal state of the battery cell and conduct internally triggered cell safety tests, holes need to be drilled in the cell's top cover or casing to allow wiring harnesses to extend from inside the cell for monitoring or measurement. Current technology seals these holes with double-layer adhesive. However, during use or testing, the temperature rise of the individual battery cell can cause gaps in the adhesive, leading to electrolyte leakage from the top cover. Utility Model Content

[0003] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and provide a single cell battery and a battery pack.

[0004] This application provides the following technical solution: a single-cell battery, having a first orientation, comprising: case; A top cover is connected to one end of the housing along the first direction, and the top cover is provided with a through mounting hole; The electrode assembly is housed within the casing; An electronic control component is disposed within a housing. The electronic control component includes a connected detection element and conductive leads. The detection element is connected to the electrode assembly. The connector includes a first connecting portion, a second connecting portion, and a sealing element; the first connecting portion passes through the mounting hole and is connected to the top cover; the second connecting portion is connected to the portion of the first connecting portion located inside the housing and is electrically connected to the conductive lead; the sealing element is sleeved outside the first connecting portion, a portion of the sealing element passes through the mounting hole, and the sealing element abuts against the first connecting portion and the second connecting portion along the first direction.

[0005] In some embodiments, the second connecting portion includes a second connecting end and a second limiting portion connected along the first direction, the second connecting end being connected to the first connecting portion; the sealing member abuts between the first connecting portion and the second limiting portion along the first direction.

[0006] In some embodiments, the first connecting portion includes a first connecting end and a first limiting portion connected together, the first connecting end passing through the mounting hole, and the first limiting portion being connected to the side of the top cover opposite to the electrode assembly. The second connecting end is connected to the first connecting end, and the second limiting part abuts against the end of the first connecting end opposite to the first limiting part; the sealing member abuts against the first limiting part and the second limiting part along the first direction.

[0007] In some embodiments, the first connecting end is provided with a connecting hole at one end away from the first limiting portion, the second connecting end is located inside the connecting hole at one end away from the second limiting portion, and the second connecting end is threadedly connected to the hole wall of the connecting hole.

[0008] In some embodiments, the seal includes a first sealing ring and a second sealing ring connected together, the first sealing ring being received in the mounting hole and abutting against the first connecting end and the top cover; Along the first direction, one end of the second sealing ring abuts against the side of the top cover facing the electrode assembly, and the other end of the second sealing ring abuts against the second limiting portion.

[0009] In some embodiments, the top cover has a relief groove on the side opposite to the electrode assembly, the relief groove is recessed in the first direction toward the electrode assembly, the mounting hole communicates with the relief groove, and the first limiting portion is located in the relief groove.

[0010] In some embodiments, the connector further includes a sealing gasket disposed around the first sealing ring and received in the relief groove; The sealing gasket abuts against the first limiting portion and the top cover at both ends along the first direction, respectively.

[0011] In some embodiments, the connector further includes a third connecting portion disposed within the housing. The second connecting portion has a first mounting groove on the side opposite to the second connecting end. The third connecting portion is connected to a portion of the conductive lead and fixedly connected to the second limiting portion. The third connecting portion and a portion of the conductive lead are located within the first mounting groove.

[0012] In some embodiments, the connector further includes a fourth connecting portion, wherein the end of the first connecting portion opposite to the second limiting portion is provided with a second mounting groove, the fourth connecting portion is connected to the first connecting portion, and a portion of the fourth connecting portion is located in the second mounting groove.

[0013] Secondly, this application provides a battery pack including the aforementioned single battery cell.

[0014] The embodiments of this application have the following advantages: by connecting the conductive lead in the electronic control element to the second connecting part, the conductive lead can be electrically connected to the external carrier through the second connecting part and the first connecting part, ensuring that the inner conductive lead can extend effectively. At the same time, by sleeve the sealing member outside the first connecting part, with a part of the sealing member passing through the mounting hole, and connecting the sealing member to the hole wall of the mounting hole, and abutting the sealing member against the first connecting part and the second connecting part along the first direction, the convenience and stability of assembling the sealing member, the first connecting part and the second connecting part in the mounting hole are improved, ensuring the sealing quality of the connecting member to the mounting hole, thereby ensuring the reliability of the single battery during transportation and testing.

[0015] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 An exploded view of a single-cell battery provided by some embodiments of this application is shown; Figure 2 This application provides a schematic diagram of the top cover of a single-cell battery from one perspective, illustrating some embodiments thereof. Figure 3 A cross-sectional view of a single-cell battery provided by some embodiments of this application is shown; Figure 4 It shows Figure 3 Enlarged view of section A in the middle; Figure 5 An exploded view of a connector in a single-cell battery provided by some embodiments of this application is shown. Figure 6 An exploded view from another perspective is shown of a connector in a single-cell battery provided by some embodiments of this application.

[0018] Explanation of key component symbols: 100-Housing; 200-Top cover; 210-Mounting hole; 220-Leaning groove; 300-Electrode assembly; 400-Connector; 410-First connecting part; 411-First connecting end; 412-First limiting part; 413-Connecting hole; 414-Second mounting groove; 420-Second connecting part; 421-Second connecting end; 422-Second limiting part; 423-First mounting groove; 430-Seal; 431-First sealing ring; 432-Second sealing ring; 440-Third connecting part; 450-Fourth connecting part; 500-Electrical control element; 510-Conductive lead; 520-Detection element; 600-Sealing gasket.

[0019] Z - First direction. Detailed Implementation

[0020] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0021] It should be noted that when an element is said to be "fixed" to another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly" on another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0022] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the template description is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] like Figures 1 to 4 As shown, some embodiments of this application provide a single battery cell. By connecting the conductive lead 510 in the electronic control element 500 to the second connection part 420, the conductive lead 510 can be electrically connected to the external carrier through the second connection part 420 and the first connection part 410. This ensures that the inner conductive lead 510 extends effectively while ensuring the sealing quality of the connector 400 to the mounting hole 210, thereby ensuring the reliability of the single battery cell during transportation and testing.

[0026] The single cell includes a casing 100, a top cover 200, an electrode assembly 300, an electronic control element 500, and a connector 400.

[0027] The top cover 200 is connected to one end of the housing 100 along the first direction Z. The connection method between the top cover 200 and the housing 100 includes at least one of bonding, welding, hot melt connection, snap-fit, and tenon and mortise connection, which can be specifically set according to the actual situation.

[0028] In this embodiment, the top cover 200 is provided with a through mounting hole 210, which penetrates the top cover 200 along the first direction Z. The number of mounting holes 210 can be one, two, or more, and can be specifically set according to the actual situation.

[0029] In this embodiment, there is one mounting hole 210. In other embodiments, there are two mounting holes 210, which are spaced apart.

[0030] The electrode assembly 300 is disposed within the housing 100, whereby the housing 100 and top cover 200 provide limiting and protection for the electrode assembly 300, ensuring its stability within the housing 100. Additionally, an electronic control element 500 is disposed within the housing 100, located to one side of the electrode assembly 300. The electronic control element 500 includes a connected detection element 520 and a conductive lead 510, with the detection element 520 electrically connected to the electrode assembly 300. It should be noted that the conductive lead 510 includes a first conductive wire and a second conductive wire. The first conductive wire is used to connect to the positive terminal of an external power source, and the second conductive wire is used to connect to the negative terminal of the external power source, facilitating the application of voltage and power by the external power source to initiate the test.

[0031] It is understood that in some embodiments, the electronic control element 500 is disposed on one side of the electrode assembly 300 along the second direction. In other embodiments, the electronic control element 500 is disposed on one side of the electrode assembly 300 perpendicular to the first direction Z and the second direction.

[0032] It is worth noting that the detection element 520 includes at least one of a temperature sensing wire, a copper wire, and a sensor.

[0033] The connector 400 includes a first connecting part 410, a second connecting part 420, and a sealing member 430. The first connecting part 410 passes through the mounting hole 210 along the first direction Z. The side wall of the first connecting part 410 is connected to the hole wall of the mounting hole 210. The first connecting part 410 is connected to the top cover. The second connecting part 420 is connected to the portion of the first connecting part 410 located inside the housing 100. The second connecting part 420 is electrically connected to the conductive lead 510.

[0034] The sealing element 430 is sleeved outside the first connecting end 411, and a portion of the sealing element 430 passes through the mounting hole 210, meaning a portion of the sealing element 430 is disposed within the mounting hole 210, with the side of the sealing element 430 facing the hole wall of the mounting hole 210 abutting against the hole wall of the mounting hole 210. Furthermore, the sealing element 430 abuts against the first connecting portion 410 and the second connecting portion 420 along the first direction Z, thereby limiting the sealing element 430 along the first direction Z through the first connecting portion 410 and the second connecting portion 420. Simultaneously, the sealing element 430 forms a sealing connection structure between the first connecting portion 410 and the second connecting portion 420 along the first direction Z, improving the sealing quality between the first connecting portion 410 and the second connecting portion 420 along the first direction Z.

[0035] It is understandable that by connecting the seal 430 to the wall of the mounting hole 210 and abutting the seal 430 against the first connecting part 410 and the second connecting part 420 along the first direction Z, the ease and stability of assembling the seal 430, the first connecting part 410 and the second connecting part 420 in the mounting hole 210 are improved, and the sealing quality of the connector 400 to the mounting hole 210 is guaranteed.

[0036] like Figure 2As shown, in some embodiments of this application, the second connecting portion 420 includes a second connecting end 421 and a second limiting portion 422 connected along the first direction Z. The second connecting end 421 is connected to the first connecting portion 410, thereby connecting the first connecting portion 410 and the second connecting portion 420. Furthermore, the second limiting portion 422 abuts against the side of the top cover 200 facing the electrode assembly 300 along the first direction Z, thereby limiting the connection position between the first connecting portion 410 and the second connecting portion 420 through the second limiting portion 422 and the side of the top cover 200 facing the electrode assembly 300. This ensures the stability of the connection between the first connecting portion 410 and the second connecting portion 420, while also ensuring the stability of the relative positions of the first connecting portion 410 and the second connecting portion 420. In addition, the seal 430 abuts against the first connecting portion 410 and the second limiting portion 422 along the first direction Z, so as to provide a limiting effect on the seal 430 through the first connecting portion 410 and the second limiting portion 422, so as to ensure the stability and sealing quality of the seal 430 between the first connecting portion 410 and the second limiting portion 422.

[0037] It is understood that by providing a mounting hole 210 through the top cover 200 and connecting the first connecting part 410 and the second connecting part 420 within the mounting hole 210, this application can not only seal the mounting hole 210, but also connect the conductive lead 510 to the second limiting part 422. This allows the conductive lead 510 to be led out from the mounting hole 210 while ensuring the sealing quality of the connector 400 to the mounting hole 210, preventing leakage, and thus ensuring the reliability of the single cell during transportation and testing.

[0038] In this embodiment, the second limiting part 422 is located inside the housing 100 and is electrically connected to the conductive lead 510. It should be noted that the connection method between the conductive lead 510 and the second limiting part 422 includes at least one of soldering, ultrasonic welding, laser welding, and electrolytically resistant adhesive curing. This can be specifically set according to actual conditions to ensure the stability of the connection between the conductive lead 510 and the second limiting part 422, thereby ensuring the stability of the connection between the conductive lead 510 and the second connecting part 420, and thus ensuring the stability of the external power supply and the electrical connection between the conductive lead 510 and the electronic control component 500, and ensuring the accuracy of the test.

[0039] The connection method between the second connecting part 420 and the first connecting part 410 includes any one of threaded connection, snap-fit, adhesive connection, and tenon-mortise connection, which can be specifically set according to the actual situation.

[0040] For example, in some embodiments, one of the first connecting portion 410 and the second connecting portion 420 has an internal thread and the other has an external thread, so as to thread the first connecting portion 410 and the second connecting portion 420 together.

[0041] For example, in some other embodiments, one of the first connecting portion 410 and the second connecting portion 420 is provided with a protrusion, and the other is provided with a groove, the protrusion is engaged in the groove, and the protrusion is connected to the groove wall.

[0042] For example, in some other embodiments, one of the first connecting portion 410 and the second connecting portion 420 is provided with a first adhesive layer, and the other is provided with a second adhesive layer. The first adhesive layer and the second adhesive layer are bonded to each other, thereby connecting the first connecting portion 410 and the second connecting portion 420.

[0043] like Figures 4 to 6 As shown, in some embodiments of this application, the first connecting portion 410 includes a first connecting end 411 and a first limiting portion 412 connected together. The first connecting end 411 passes through the mounting hole 210, and the first limiting portion 412 is connected to the side of the top cover 200 opposite to the electrode assembly 300. It can be understood that the outer diameter of the first limiting portion 412 is larger than the inner diameter of the mounting hole 210, so that the side of the top cover 200 opposite to the electrode assembly 300 limits the first limiting portion 412 in the first direction Z, thereby limiting the first connecting portion 410 along the first direction Z, so as to ensure the stability of the connection between the first connecting portion 410 and the mounting hole 210 and the accuracy of the assembly position.

[0044] The second connecting end 421 is connected to the first connecting end 411, and the second limiting part 422 abuts against the end of the first connecting end 411 that is away from the first limiting part 412, so that the second limiting part 422 limits the connection between the second connecting end 421 and the first connecting end 411 along the first direction Z, so as to further improve the accuracy of the connection position between the first connecting end 411 and the second connecting end 421 and ensure the stability of the first connecting part 410 and the second connecting part 420 in the mounting hole 210.

[0045] In addition, the sealing member 430 is located between the first limiting part 412 and the second limiting part 422 along the first direction Z. One end of the sealing member 430 along the first direction Z abuts against the first limiting part 412, and the other end of the sealing member 430 along the first direction Z abuts against the second limiting part 422. The first limiting part 412 and the second limiting part 422 provide a limiting and fixing effect on the sealing member 430 along the first direction Z, so as to ensure the stability of the sealing member 430 between the first limiting part 412 and the second limiting part 422, so as to prevent the sealing member 430 from moving in the first direction Z, and at the same time, it can ensure the stability of the connection between the sealing member 430 and the hole wall of the mounting hole 210.

[0046] like Figure 5As shown, in some embodiments of this application, the first connecting end 411 has a connecting hole 413 at one end opposite to the first limiting part 412. The connecting hole 413 is recessed in the first direction Z towards the direction opposite to the electrode assembly 300. The second connecting end 421 is located inside the connecting hole 413 at one end opposite to the second limiting part 422, and the second connecting end 421 is threadedly connected to the hole wall of the connecting hole 413. It can be understood that the hole wall of the connecting hole 413 has internal threads, and the side wall of the second connecting end 421 has external threads. This threaded connection between the second connecting end 421 and the hole wall of the connecting hole 413 not only ensures the stability of the connection between the first connecting part 410 and the second connecting part 420, but also improves the efficiency of installation or disassembly between the first connecting part 410 and the second connecting part 420, thereby improving the convenience of assembly.

[0047] In some embodiments, the axis of the connecting hole 413 coincides with the axis of the mounting hole 210.

[0048] like Figure 5 and Figure 6 As shown, in some embodiments of this application, the seal 430 includes a first sealing ring 431 and a second sealing ring 432 connected together. The first sealing ring 431 is received in the mounting hole 210 and abuts against the first connecting end 411 and the top cover 200. It is understood that the outer wall of the first sealing ring 431 abuts against the wall of the mounting hole 210, thereby abutting the outer wall of the first sealing ring 431 against the top cover 200. The inner wall of the first sealing ring 431 abuts against the side of the first connecting end 411 facing the wall of the mounting hole 210. Thus, the first sealing ring 431 is abutted against by the side of the first connecting end 411 facing the wall of the mounting hole 210 and the wall of the mounting hole 210, thereby limiting and fixing the first sealing ring 431. Simultaneously, the first sealing ring 431 can further improve the sealing quality of the connector 400 against the mounting hole 210.

[0049] Along the first direction Z, one end of the second sealing ring 432 abuts against the side of the top cover 200 facing the electrode assembly 300, and the other end of the second sealing ring 432 abuts against the second limiting part 422. The top cover 200 and the second limiting part 422 limit the second sealing ring 432 along the first direction Z, thereby ensuring the stability of the second sealing ring 432 between the top cover 200 and the second limiting part 422. At the same time, it limits the first sealing ring 431 along the first direction Z, thereby ensuring the stability of the sealing member 430 between the first limiting part 412 and the second limiting part 422. It also ensures the stability of the connection between the sealing member 430 and the connector 400 and the top cover 200, respectively, improving the sealing quality of the mounting hole 210 and preventing leakage.

[0050] like Figures 2 to 4As shown, in some embodiments of this application, the top cover 200 has a clearance groove 220 on the side away from the electrode assembly 300. The clearance groove 220 is recessed along the first direction Z towards the electrode assembly 300. The mounting hole 210 communicates with the clearance groove 220, and the first limiting part 412 is located within the clearance groove 220. It can be understood that the first limiting part 412 is connected to the groove wall of the clearance groove 220, that is, the clearance groove 220 provides clearance space for the first limiting part 412 to avoid the first limiting part 412 protruding on the side of the top cover 200 away from the electrode assembly 300, affecting the height of the single cell in the first direction Z, ensuring the compactness of the connection between the connector 400 and the top cover 200, thereby improving the space utilization of the top cover 200.

[0051] Meanwhile, the groove wall of the clearance groove 220 can limit the first limiting part 412 along the first direction Z and perpendicular to the first direction Z, so as to ensure the stability of the connection between the first limiting part 412 and the top cover 200, and at the same time improve the accuracy and convenience of assembling the connector 400 and the top cover 200.

[0052] like Figures 4 to 6 As shown, in some embodiments of this application, the connector 400 further includes a sealing gasket 600, which surrounds the first sealing ring 431, and the inner wall of the sealing gasket 600 abuts against the outer wall of the first sealing ring 431, and the sealing gasket 600 is received in the relief groove 220. It can be understood that the side of the sealing gasket 600 facing the electrode assembly 300 along the first direction Z abuts against the side of the relief groove 220 facing away from the electrode assembly 300 along the first direction Z, and the side of the sealing gasket 600 facing away from the electrode assembly 300 along the first direction Z abuts against the side of the first limiting portion 412 facing the electrode assembly 300 along the first direction Z.

[0053] In other words, the sealing gasket 600 abuts against the first limiting part 412 and the top cover 200 at both ends along the first direction Z, so as to form a seal between the first limiting part 412 and the top cover 200 through the sealing gasket 600, so as to further ensure the sealing quality between the first limiting part 412 and the top cover 200, thereby further improving the sealing quality of the mounting hole 210.

[0054] like Figure 4 and Figure 5As shown, in some embodiments of this application, the connector 400 includes a third connecting portion 440, which is disposed within the housing 100. The second limiting portion 422 has a first mounting groove 423 on the side opposite to the second connecting end 421. The first mounting groove 423 is recessed in the first direction Z toward the direction opposite to the electrode assembly 300. The third connecting portion 440 is connected to a portion of the conductive lead 510. The third connecting portion 440 is fixedly connected to the second limiting portion 422, and the third connecting portion 440 and a portion of the conductive lead 510 are located within the first mounting groove 423 to fix the conductive lead 510 through the groove wall of the third connecting portion 440 and the first mounting groove 423, thereby ensuring the stability of the connection between the conductive lead 510 and the second connecting portion 420 through the third connecting portion 440.

[0055] It should be noted that the connection method between the third connecting part 440 and the groove wall of the first mounting groove 423 includes at least one of threaded connection, snap-fit, adhesive, soldering, ultrasonic welding, laser welding, and electrolytic corrosion resistant adhesive curing, so as to ensure the stability of the connection between the third connecting part 440 and the groove wall of the first mounting groove 423, thereby ensuring the stability of the connection between the conductive lead 510 and the second connecting part 420.

[0056] It is understood that another part of the third connecting part 440 is located outside the first mounting groove 423, and this part of the third connecting part 440 located outside the first mounting groove 423 abuts against the side of the second connecting part 420 facing the electrode assembly 300, so as to ensure the accuracy and stability of the connection position between the third connecting part 440 and the second connecting part 420.

[0057] like Figure 4 and Figure 6 As shown, in some embodiments of this application, the connector 400 further includes a fourth connecting portion 450. The first connecting portion 410 has a second mounting groove 414 at one end away from the second limiting portion 422. The second mounting groove 414 is recessed along the first direction Z towards the electrode assembly 300. The fourth connecting portion 450 is connected to the first connecting portion 410, and a portion of the fourth connecting portion 450 is located in the second mounting groove 414. The other portion of the fourth connecting portion 450 is located on the side of the first limiting portion 412 away from the electrode assembly 300, so that the first limiting portion 412 limits the fourth connecting portion 450 along the first direction Z.

[0058] It should be noted that the fourth connecting part 450 and the groove wall of the second mounting groove 414 can provide a limiting and fixing function for the external conductive wire, so as to fix the external conductive wire between the groove wall of the second mounting groove 414 and the fourth connecting part 450, so as to connect the electronic control element 500 to the external power source through the conductive lead 510 and the connector 400.

[0059] In some embodiments, the wall of the second mounting groove 414 is provided with an internal thread, and the end of the fourth connecting part 450 near the electrode assembly 300 is provided with an external thread, thereby threading the fourth connecting part 450 to the wall of the second mounting groove 414, and installing the external conductive wire between the fourth connecting part 450 and the wall of the second mounting groove 414 with the edge, thereby improving the convenience and efficiency of assembly.

[0060] Secondly, this application provides a battery pack that includes the individual battery cells in any of the above embodiments.

[0061] It is understood that the battery pack has the beneficial effects of the individual cells in any of the above embodiments, which will not be elaborated here.

[0062] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0063] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0064] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A single-cell battery having a first orientation (Z), characterized in that, include: Casing (100); A top cover (200) is connected to one end of the housing (100) along the first direction (Z), and the top cover (200) is provided with a through mounting hole (210). An electrode assembly (300) is disposed within a housing (100); An electronic control element (500) is disposed within a housing (100). The electronic control element (500) includes a connected detection element (520) and a conductive lead (510). The detection element (520) is connected to the electrode assembly (300). The connector (400) includes a first connecting part (410), a second connecting part (420), and a sealing member (430); the first connecting part (410) passes through the mounting hole (210) and is connected to the top cover (200); the second connecting part (420) is connected to the portion of the first connecting part (410) located inside the housing (100) and is electrically connected to the conductive lead (510); the sealing member (430) is sleeved outside the first connecting part (410), a portion of the sealing member (430) passes through the mounting hole (210), and the sealing member (430) abuts against the first connecting part (410) and the second connecting part (420) along the first direction (Z).

2. The single-cell battery according to claim 1, characterized in that, The second connecting portion (420) includes a second connecting end (421) and a second limiting portion (422) connected along the first direction (Z), the second connecting end (421) being connected to the first connecting portion (410); the sealing member (430) abuts against the first connecting portion (410) and the second limiting portion (422) along the first direction (Z).

3. The single-cell battery according to claim 2, characterized in that, The first connecting part (410) includes a first connecting end (411) and a first limiting part (412) connected together. The first connecting end (411) passes through the mounting hole (210), and the first limiting part (412) is connected to the side of the top cover (200) away from the electrode assembly (300). The second connecting end (421) is connected to the first connecting end (411), and the second limiting part (422) abuts against the end of the first connecting end (411) away from the first limiting part (412); the sealing member (430) abuts against the first limiting part (412) and the second limiting part (422) along the first direction (Z).

4. The single-cell battery according to claim 3, characterized in that, The first connecting end (411) is provided with a connecting hole (413) at one end away from the first limiting part (412), and the second connecting end (421) is located inside the connecting hole (413) at one end away from the second limiting part (422), and the second connecting end (421) is threadedly connected to the hole wall of the connecting hole (413).

5. The single-cell battery according to claim 3, characterized in that, The sealing element (430) includes a first sealing ring (431) and a second sealing ring (432) connected together. The first sealing ring (431) is received in the mounting hole (210) and abuts against the first connecting end (411) and the top cover (200). Along the first direction (Z), one end of the second sealing ring (432) abuts against the side of the top cover (200) facing the electrode assembly (300), and the other end of the second sealing ring (432) abuts against the second limiting part (422).

6. The single-cell battery according to claim 5, characterized in that, The top cover (200) has a relief groove (220) on the side away from the electrode assembly (300). The relief groove (220) is recessed in the direction of the first direction (Z) toward the electrode assembly (300). The mounting hole (210) communicates with the relief groove (220). The first limiting part (412) is located in the relief groove (220).

7. The single-cell battery according to claim 6, characterized in that, The connector (400) further includes a sealing gasket (600) disposed around the first sealing ring (431) and received in the relief groove (220). The sealing gasket (600) abuts against the first limiting part (412) and the top cover (200) at both ends along the first direction (Z).

8. The single-cell battery according to claim 2, characterized in that, The connector (400) further includes a third connecting part (440), which is disposed in the housing (100). The second connecting part (420) has a first mounting groove (423) on the side opposite to the second connecting end (421). The third connecting part (440) is connected to a part of the conductive lead (510). The third connecting part (440) is fixedly connected to the second limiting part (422), and the third connecting part (440) and a part of the conductive lead (510) are located in the first mounting groove (423).

9. The single-cell battery according to any one of claims 2 to 8, characterized in that, The connector (400) further includes a fourth connecting part (450), and the first connecting part (410) is provided with a second mounting groove (414) at one end away from the second limiting part (422). The fourth connecting part (450) is connected to the first connecting part (410), and a part of the fourth connecting part (450) is located in the second mounting groove (414).

10. A battery pack, characterized in that, The single-cell battery includes any one of claims 1 to 9.

Images