Waterproof protection structure and waterproof cylindrical battery

Abstract

The waterproof protection structure is used for accommodating a battery body in which the waterproof cylindrical battery is installed, and comprises a protection waterproof shell and a sealing connecting cover plate. The protection waterproof shell is formed with an installation groove, and the sealing connecting cover plate is arranged at the groove opening of the installation groove and is sealingly and fixedly connected with the protection waterproof shell, so that the waterproof protection structure forms a sealing installation cavity for accommodating the battery body. The outer peripheral wall of the protection waterproof shell is formed with a reinforcing rib. The waterproof protection structure has good waterproof effect and good structural strength.

Description

Technical Field

[0001] This disclosure relates to the technical field of cylindrical batteries, and in particular to a waterproof protective structure and a waterproof cylindrical battery. Background Technology

[0002] Cylindrical batteries are common power sources, encompassing mainstream models such as AA and AAA batteries. To effectively improve the lifespan and structural strength of cylindrical batteries, they are typically housed within a casing for protection. For example, existing patent CN221353116U describes a rechargeable battery with good conductivity and stable structure.

[0003] However, as the application scenarios of cylindrical batteries extend to extreme environments such as outdoor equipment, medical instruments, and industrial sensors, the shortcomings of the waterproof performance of the aforementioned rechargeable batteries are becoming increasingly apparent. In humid, rainy, or high-humidity environments, external moisture and conductive liquids can easily penetrate the interior through gaps or interfaces in the rechargeable battery casing and directly contact the cells and circuit boards, greatly increasing the possibility of short circuits in the cells and circuit boards. At the same time, the structural strength of the rechargeable battery casing is low, making it difficult to withstand various impacts and pressures in extreme environments, thereby greatly reducing the battery's lifespan and safety. Utility Model Content

[0004] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a waterproof protective structure and a waterproof cylindrical battery with better waterproof effect and structural strength.

[0005] The purpose of this disclosure is achieved through the following technical solution:

[0006] A waterproof protection structure for accommodating a battery body in which a waterproof cylindrical battery is installed, the waterproof protection structure comprising a protective waterproof shell and a sealing connection cover plate;

[0007] The protective waterproof housing has an installation groove, and the sealing connection cover is placed over the groove opening of the installation groove. The sealing connection cover is sealed and fixedly connected to the protective waterproof housing so that the waterproof protection structure forms the sealed installation cavity. The sealed installation cavity is used to accommodate and install the battery body. The outer peripheral wall of the protective waterproof housing has reinforcing ribs.

[0008] In one embodiment, there are multiple reinforcing ribs, which are evenly arranged on the outer peripheral wall of the protective waterproof shell.

[0009] In one embodiment, the reinforcing rib and the protective waterproof shell are integrally formed.

[0010] In one embodiment, the gap between the sealing connection cover and the protective waterproof housing is filled with a first sealing and fixing adhesive block, so that the sealing connection cover is sealed and fixed to the protective waterproof housing.

[0011] In one embodiment, the sealing connection cover includes a cover body and a waterproof conductive connector. The cover body has a connection hole. The electrical connection end of the waterproof conductive connector passes through the connection hole and is disposed in the sealing mounting cavity. The electrical connection end of the waterproof conductive connector is used to electrically connect with the conductive end of the battery body. The outer peripheral wall of the waterproof conductive end of the waterproof conductive connector is sealed and fixedly connected to the hole wall of the connection hole.

[0012] In one embodiment, a second sealing and fixing block is filled in the gap between the outer peripheral wall of the waterproof conductive end of the waterproof conductive connector and the hole wall of the connection hole, so that the outer peripheral wall of the waterproof conductive end of the waterproof conductive connector is sealed and fixed to the hole wall of the connection hole.

[0013] In one embodiment, the inner peripheral wall of the mounting groove is provided with a thermally conductive buffer pad, one side of which is press-fitted against the inner peripheral wall of the mounting groove, and the other side of which is press-fitted against the outer peripheral wall of the battery body.

[0014] In one embodiment, the thermally conductive cushioning pad is a thermally conductive silicone pad.

[0015] In one embodiment, the protective waterproof housing is an aluminum protective waterproof housing.

[0016] In one embodiment, the thickness of the thermally conductive buffer pad is 0.15mm-0.2mm.

[0017] In one embodiment, the waterproof protection structure further includes an elastic cushioning pad disposed on the bottom wall of the mounting groove.

[0018] A waterproof cylindrical battery includes a battery body and the waterproof protection structure described in any of the above embodiments.

[0019] In one embodiment, the battery body includes a cylindrical cell, an electrical connector, and a control board. The cell is installed in the sealed mounting cavity. The two ends of the electrical connector are fixed and electrically connected to the positive and negative terminals of the cylindrical cell, respectively. The control board is located at one end of the cylindrical cell adjacent to the sealed connection cover plate, and the control board is fixed and electrically connected to the electrical connector.

[0020] Compared with the prior art, this disclosure has at least the following advantages:

[0021] 1. The aforementioned waterproof protection structure, with its protective waterproof shell forming an installation groove, has a sealing connection cover plate positioned at the opening of the installation groove. This sealing connection cover plate is securely connected to the protective waterproof shell, creating a sealed installation cavity. This cavity accommodates the battery body, allowing the waterproof protection structure to provide a sealed protection for the battery assembly. This prevents external water or conductive liquids from entering the sealed installation cavity through the gap between the sealing connection cover and the protective waterproof shell. This effectively prevents short circuits caused by direct contact with external water or conductive liquids during charging and discharging, resulting in a superior waterproof sealing effect and significantly improving the lifespan and safety of the waterproof cylindrical battery.

[0022] 2. Because the outer peripheral wall of the protective waterproof casing has reinforcing ribs, it not only increases the thickness of the protective waterproof casing and improves its overall rigidity, but also greatly enhances the structural strength of the waterproof protective structure. Compared with the rechargeable batteries in the aforementioned related technologies, the waterproof protective structure of this invention can better withstand various impacts and pressures in extreme environments, ensuring that the waterproof cylindrical battery of this invention can operate stably and normally. Furthermore, it can increase the contact area between the protective waterproof casing and the air, greatly increasing the heat dissipation area of ​​the waterproof cylindrical battery. This prevents the waterproof cylindrical battery from experiencing thermal runaway or even explosion due to internal heat accumulation, further improving the service life and safety of the waterproof cylindrical battery. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure 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.

[0024] Figure 1 This is a schematic diagram of the structure of a waterproof cylindrical battery according to an embodiment;

[0025] Figure 2 for Figure 1 A partial structural diagram of the waterproof cylindrical battery shown;

[0026] Figure 3 for Figure 1 Another partial structural diagram of the waterproof cylindrical battery shown;

[0027] Figure 4 for Figure 1 Another partial structural diagram of the waterproof cylindrical battery shown;

[0028] Figure 5 for Figure 1 Another partial structural diagram of the waterproof cylindrical battery shown;

[0029] Figure 6 This is a schematic diagram of the structural model of a waterproof cylindrical battery. Detailed Implementation

[0030] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0031] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0032] 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 disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments:

[0034] like Figures 1 to 6As shown, a waterproof protection structure 100 in one embodiment is used to accommodate the battery body 200 of the waterproof cylindrical battery 10. The waterproof protection structure 100 includes a protective waterproof shell 110 and a sealing connection cover 120. The protective waterproof shell 110 has an installation groove 111. The sealing connection cover 120 is placed over the groove opening of the installation groove 111 and is sealed and fixedly connected to the protective waterproof shell 110, so that the waterproof protection structure 100 forms a sealed installation cavity (not shown). The sealed installation cavity is used to accommodate the battery body 200, so that the waterproof protection structure 100 can seal and protect the battery body 200 assembly, preventing external water or conductive liquid from entering the sealed installation cavity through the gap between the sealing connection cover 120 and the protective waterproof shell 110. This effectively prevents the battery body 200 from short-circuiting due to direct contact with external water or conductive liquid during charging and discharging. As a result, the waterproof protection structure 100 has a better waterproof sealing effect, thereby greatly improving the service life and safety of the waterproof cylindrical battery 10.

[0035] like Figures 1 to 6 As shown, furthermore, the outer peripheral wall of the waterproof housing 110 is formed with reinforcing ribs 112, which not only increases the thickness of the waterproof housing 110 and improves the overall rigidity of the waterproof housing 110, but also greatly improves the structural strength of the waterproof protection structure 100. Compared with the rechargeable batteries in the above-mentioned related technologies, the waterproof protection structure 100 of this public disclosure can better withstand various impacts and pressures in extreme environments, so as to ensure that the waterproof cylindrical battery 10 of this disclosure can work stably and normally. Moreover, it can also increase the contact area between the waterproof housing 110 and the air, so as to greatly increase the heat dissipation area of ​​the waterproof cylindrical battery 10, and avoid the phenomenon of thermal runaway or even explosion of the battery body 200 due to internal heat accumulation. This further improves the service life and safety of the waterproof cylindrical battery 10.

[0036] The aforementioned waterproof protection structure 100, with an installation groove 111 formed in the waterproof housing 110, has a sealing connection cover 120 covering the opening of the installation groove 111, and the sealing connection cover 120 is sealed and fixedly connected to the waterproof housing 110, so that the waterproof protection structure 100 forms a sealed installation cavity. The sealed installation cavity is used to accommodate the battery body 200, so that the waterproof protection structure 100 can seal and protect the battery body 200 assembly, preventing external water or conductive liquid from entering the sealed installation cavity through the gap between the sealing connection cover 120 and the waterproof housing 110. This effectively prevents the battery body 200 from short-circuiting due to direct contact with external water or conductive liquid during charging and discharging, thus giving the waterproof protection structure 100 a better waterproof sealing effect, thereby greatly improving the service life and safety of the waterproof cylindrical battery 10.

[0037] Furthermore, because the outer peripheral wall of the waterproof housing 110 is reinforced with ribs 112, the thickness of the waterproof housing 110 is increased, and the overall rigidity of the waterproof housing 110 is improved, resulting in a significant increase in the structural strength of the waterproof protection structure 100. Compared with the rechargeable batteries in the aforementioned related technologies, the waterproof protection structure 100 of this public invention can better withstand various impacts and pressures in extreme environments, ensuring that the waterproof cylindrical battery 10 of this disclosure can operate stably and normally. It also increases the contact area between the waterproof housing 110 and the air, greatly increasing the heat dissipation area of ​​the waterproof cylindrical battery 10. This prevents the waterproof cylindrical battery 10 from experiencing thermal runaway or even explosion due to internal heat accumulation, further improving the service life and safety of the waterproof cylindrical battery 10.

[0038] like Figure 1 and Figure 3 As shown, in one embodiment, there are multiple reinforcing ribs 112, which are evenly arranged on the outer peripheral wall of the waterproof housing 110. This not only further improves the structural strength of the waterproof housing 110, but also increases the contact area between the waterproof housing 110 and the air, thereby greatly improving the heat dissipation effect of the waterproof cylindrical battery 10. This effectively avoids the phenomenon of thermal runaway or even explosion of the battery body 200 due to internal heat accumulation in the waterproof cylindrical battery 10.

[0039] like Figure 1 and Figure 3 As shown, in one embodiment, the reinforcing rib 112 and the protective waterproof shell 110 are integrally formed to improve the structural compactness of the protective waterproof shell 110.

[0040] like Figure 1 As shown, in one embodiment, the gap between the sealing connection cover 120 and the protective waterproof housing 110 is filled with a first sealing and fixing adhesive block (not shown) to seal and fix the sealing connection cover 120 to the protective waterproof housing 110, thereby preventing external water or conductive liquid from entering the sealed mounting cavity through the gap between the sealing connection cover 120 and the protective waterproof housing 110. This effectively prevents the battery body 200 from short-circuiting due to direct contact with external water or conductive liquid during charging and discharging, giving the waterproof protection structure 100 a better waterproof sealing effect, and thus greatly improving the service life and safety of the waterproof cylindrical battery 10.

[0041] like Figure 1 and Figure 2As shown, in one embodiment, the sealing connection cover 120 includes a cover body 121 and a waterproof conductive connector 122. The cover body 121 has a connection hole 1211. The electrical connection end of the waterproof conductive connector 122 passes through the connection hole 1211 and is disposed in the sealed mounting cavity. The electrical connection end of the waterproof conductive connector 122 is used for electrical connection with the conductive end of the battery body 200. The outer peripheral wall of the waterproof conductive end of the waterproof conductive connector 122 is sealed and fixedly connected to the hole wall of the connection hole 1211, so that the battery body 200 in the sealed mounting cavity can be electrically connected to the battery body 200 through the waterproof connection hole 1211. While the conductive connector 122 is electrically connected to the conductive end of the electrical equipment, it can also prevent external water or conductive liquid from entering the sealed installation cavity through the gap between the outer peripheral wall of the waterproof conductive end of the waterproof conductive connector 122 and the hole wall of the connection hole 1211. This further avoids the phenomenon of short circuit in the battery body 200 due to direct contact with external water or conductive liquid during charging and discharging, so that the waterproof protection structure 100 has a better waterproof sealing effect, thereby greatly improving the service life and safety of the waterproof cylindrical battery 10.

[0042] It should be noted that the structure and function of the waterproof conductive connector 122 are existing technologies and will not be elaborated further here.

[0043] like Figure 2 As shown, in one embodiment, a second sealing and fixing block (not shown) is filled in the gap between the outer peripheral wall of the waterproof conductive end of the waterproof conductive connector 122 and the hole wall of the connection hole 1211. This seals and fixes the outer peripheral wall of the waterproof conductive end of the waterproof conductive connector 122 to the hole wall of the connection hole 1211, preventing external water or conductive liquid from entering the sealed mounting cavity through the gap between the outer peripheral wall of the waterproof conductive end of the waterproof conductive connector 122 and the hole wall of the connection hole 1211. This avoids short circuits in the battery body 200 due to direct contact with external water or conductive liquid during charging and discharging, resulting in a better waterproof sealing effect for the waterproof protection structure 100. This significantly improves the service life and safety of the waterproof cylindrical battery 10.

[0044] like Figures 1 to 5As shown, in one embodiment, the inner peripheral wall of the mounting groove 111 is provided with a thermally conductive buffer pad 130. One side of the thermally conductive buffer pad 130 is press-fitted against the inner peripheral wall of the mounting groove 111, and the other side of the thermally conductive buffer pad 130 is press-fitted against the outer peripheral wall of the battery body 200. This allows the thermally conductive buffer pad 130 to compensate for the gap between the inner peripheral wall of the mounting groove 111 and the outer peripheral wall of the battery body 200 through its own elastic properties. This ensures that the battery body 200 is securely positioned in a predetermined location within the sealed mounting cavity, preventing the waterproof cylindrical battery 10 from shaking relative to the protective waterproof casing 110 when affected by external factors such as collisions or vibrations. The thermally conductive buffer pad 130 can also reduce the possibility of damage to the battery body 200 due to collision with the inner wall of the waterproof housing 110. Furthermore, the thermally conductive buffer pad 130 can also buffer and disperse the squeezing and collision forces between the inner peripheral wall of the mounting groove 111 and the outer peripheral wall of the battery body 200 through its own elastic properties, further reducing the possibility of damage to the battery body 200. At the same time, the thermally conductive buffer pad 130 can also conduct heat generated by the battery body 200, avoiding thermal runaway or even explosion caused by heat accumulation in the battery body 200, further improving the service life and safety of the waterproof cylindrical battery 10.

[0045] like Figure 3 and Figure 4 As shown, in one embodiment, the thermally conductive buffer pad 130 is a thermally conductive silicone pad, so that the thermally conductive buffer pad 130 can have good thermal conductivity and elasticity while also insulating the battery body 200, thereby further reducing the possibility of short circuit in the waterproof cylindrical battery 10.

[0046] like Figure 3 and Figure 4 As shown, in one embodiment, the protective waterproof housing 110 is an aluminum protective waterproof housing 110, so that the protective waterproof housing 110 has better structural strength and thermal conductivity, thereby greatly improving the heat dissipation effect and usage stability of the waterproof cylindrical battery 10.

[0047] like Figure 3 and Figure 4 As shown, in one embodiment, the thickness of the thermally conductive buffer pad 130 is 0.15mm-0.2mm to ensure that the thermally conductive buffer pad has good elasticity, so that the thermally conductive buffer pad 130 can not only reliably confine the battery body 200 in the sealed mounting cavity, but also effectively buffer and disperse the extrusion and collision forces between the inner peripheral wall of the mounting groove 111 and the outer peripheral wall of the battery body 200, thereby greatly reducing the possibility of damage or even destruction of the battery body 200.

[0048] like Figure 3 and Figure 4 As shown, in one embodiment, the waterproof protection structure 100 further includes an elastic buffer pad 140, which is disposed on the bottom wall of the mounting groove 111 so that the elastic buffer pad 140 can buffer and disperse the squeezing and collision forces between the battery body 200 and the bottom wall of the mounting groove 111 through its own elastic properties, thereby further reducing the possibility of damage or even destruction to the battery body 200.

[0049] This disclosure also provides a cylindrical battery, including a battery body 200 and a waterproof protection structure 100 as described in any of the above embodiments.

[0050] like Figure 5 As shown, in one embodiment, the battery body 200 includes a cylindrical cell 210, an electrical connector 220, and a control board 230. The cell 210 is installed in a sealed mounting cavity. The two ends of the electrical connector 220 are fixed and electrically connected to the positive and negative terminals of the cylindrical cell 210, respectively. The control board 230 is located at one end of the cylindrical cell 210 adjacent to the sealed connection cover plate 120, and the control board 230 is fixed and electrically connected to the electrical connector 220. This allows the control board 230 to monitor the state of the cell 210 in real time and to precisely control the charging and discharging process of the cell 210. This greatly reduces the possibility of short circuits in the cell 210, thereby significantly improving the service life and safety of the waterproof cylindrical battery 10.

[0051] Compared with the prior art, this disclosure has at least the following advantages:

[0052] 1. In the aforementioned waterproof cylindrical battery 10, the protective waterproof casing 110 has an installation groove 111, and a sealing connection cover 120 is placed over the opening of the installation groove 111. The sealing connection cover 120 is sealed and fixedly connected to the protective waterproof casing 110, so that the waterproof protection structure 100 forms a sealed installation cavity. The sealed installation cavity is used to accommodate the battery body 200, so that the waterproof protection structure 100 can seal and protect the battery body 200 assembly, preventing external water or conductive liquid from entering the sealed installation cavity through the gap between the sealing connection cover 120 and the protective waterproof casing 110. This effectively prevents the battery body 200 from short-circuiting due to direct contact with external water or conductive liquid during charging and discharging. As a result, the waterproof protection structure 100 has a better waterproof sealing effect, thereby greatly improving the service life and safety of the waterproof cylindrical battery 10.

[0053] 2. Because the outer peripheral wall of the waterproof housing 110 is reinforced with ribs 112, the thickness of the waterproof housing 110 is increased, the overall rigidity of the waterproof housing 110 is improved, and the structural strength of the waterproof protection structure 100 is greatly improved. Compared with the rechargeable batteries in the above-mentioned related technologies, the waterproof protection structure 100 of this public disclosure can better withstand various impacts and pressures in extreme environments, so as to ensure that the waterproof cylindrical battery 10 of this disclosure can work stably and normally. Moreover, it can also increase the contact area between the waterproof housing 110 and the air, so as to greatly increase the heat dissipation area of ​​the waterproof cylindrical battery 10, avoid the phenomenon of thermal runaway or even explosion of the battery body 200 due to internal heat accumulation, and further improve the service life and safety of the waterproof cylindrical battery 10.

[0054] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A waterproof protective structure (100) for accommodating a battery body (200) for mounting a waterproof cylindrical battery (10), characterized in that, The waterproof protection structure (100) includes a waterproof protective shell (110) and a sealing connection cover plate (120). The protective waterproof housing (110) has an installation groove (111), and the sealing connection cover plate (120) is placed over the groove opening of the installation groove (111). The sealing connection cover plate (120) is sealed and fixedly connected to the protective waterproof housing (110) so that the waterproof protection structure (100) forms a sealed installation cavity. The sealed installation cavity is used to accommodate the battery body (200). The outer peripheral wall of the protective waterproof housing (110) has a reinforcing rib (112).

2. The waterproof protective structure (100) according to claim 1, characterized in that, The number of the reinforcing ribs (112) is multiple, and the multiple reinforcing ribs (112) are evenly disposed on the outer peripheral wall of the protective waterproof shell (110); and / or, The reinforcing rib (112) and the protective waterproof shell (110) are integrally formed.

3. The waterproof protective structure (100) according to claim 1, characterized in that, The gap between the sealing connection cover plate (120) and the protective waterproof shell (110) is filled with a first sealing and fixing adhesive block so that the sealing connection cover plate (120) is sealed and fixed to the protective waterproof shell (110).

4. The waterproof protective structure (100) according to claim 1, characterized in that, The sealing connection cover plate (120) includes a cover body (121) and a waterproof conductive connector (122). The cover body (121) has a connection hole (1211). The electrical connection end of the waterproof conductive connector (122) passes through the connection hole (1211) and is located in the sealed mounting cavity. The electrical connection end of the waterproof conductive connector (122) is used to electrically connect with the conductive end of the battery body (200). The outer peripheral wall of the waterproof conductive end of the waterproof conductive connector (122) is sealed and fixedly connected to the hole wall of the connection hole (1211).

5. The waterproof protective structure (100) according to claim 4, characterized in that, The gap between the outer peripheral wall of the waterproof conductive end of the waterproof conductive connector (122) and the hole wall of the connecting hole (1211) is filled with a second sealing and fixing adhesive block so that the outer peripheral wall of the waterproof conductive end of the waterproof conductive connector (122) is sealed and fixed to the hole wall of the connecting hole (1211).

6. The waterproof protective structure (100) according to claim 1, characterized in that, The inner peripheral wall of the mounting groove (111) is provided with a thermally conductive buffer pad (130). One side of the thermally conductive buffer pad (130) is in interference fit against the inner peripheral wall of the mounting groove (111), and the other side of the thermally conductive buffer pad (130) is in interference fit against the outer peripheral wall of the battery body (200).

7. The waterproof protective structure (100) according to claim 6, characterized in that, The thermally conductive buffer pad (130) is a thermally conductive silicone pad; and / or, The protective waterproof housing (110) is an aluminum protective waterproof housing; and / or, The thickness of the thermally conductive buffer pad (130) is 0.15mm-0.2mm.

8. The waterproof protective structure (100) according to claim 1, characterized in that, The waterproof protective structure (100) also includes an elastic buffer pad (140), which is disposed on the bottom wall of the mounting groove (111).

9. A waterproof cylindrical battery (10), characterized in that, It includes a battery body (200) and a waterproof protective structure (100) as described in any one of claims 1 to 8.

10. The waterproof cylindrical battery (10) according to claim 9, characterized in that, The battery body (200) includes a cylindrical cell (210), an electrical connector (220), and a control board (230). The cell (210) is installed in the sealed mounting cavity. The two ends of the electrical connector (220) are fixed and electrically connected to the positive terminal and the negative terminal of the cylindrical cell (210), respectively. The control board (230) is located at one end of the cylindrical cell (210) adjacent to the sealed connection cover plate (120), and the control board (230) is fixed and electrically connected to the electrical connector (220).

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