Single battery and electric equipment

Abstract

The utility model relates to a single battery and electric equipment, and relates to the technical field of batteries, the single battery comprises a shell, a battery cell, a cover plate, an insulation assembly and a glue joint body, the shell is provided with a containing cavity with an opening; the battery cell is arranged in the accommodating cavity and is provided with a tab; the cover plate is arranged at the end part of the shell and is used for sealing the opening; the insulation assembly comprises a first insulation part and a second insulation part, the first insulation part abuts against the side, facing the containing cavity, of the cover plate, the second insulation part and the first insulation part are arranged in a stacked mode, and one end of the second insulation part is rotationally connected with one end of the first insulation part; the glue joint body is adhered to the first insulating part, the second insulating part and the cover plate. According to the single battery and the electric equipment, a buckling structure between the first insulating part and the second insulating part is removed, so that a space is released, and a more sufficient space is provided for tab design.

Description

Single battery and electrical equipment Technical Field

[0001] This application relates to the field of battery technology, specifically to a single-cell battery and an electrical device. Background Technology

[0002] During battery production, to prevent electrical connection between the cell and the top cover, an insulating component (usually made of plastic) is installed between them. One end of the first insulating component is rotatably connected to one end of the second insulating component, and the other end of the second insulating component is snapped into the middle of the first insulating component via a clip. In related technologies, the clip structure occupies a large space, leaving little space for the tab design. Summary of the Invention

[0003] To address the aforementioned technical problems, embodiments of this application provide a single-cell battery and an electrical device that eliminates the snap-fit ​​structure between the first and second insulating components, freeing up space and providing more space for the tab design.

[0004] In a first aspect, a single-cell battery is provided, comprising:

[0005] The housing has an opening for receiving cavity;

[0006] A battery cell is disposed within the receiving cavity, and the battery cell is provided with tabs;

[0007] A cover plate is provided at the end of the housing, and the cover plate is used to close the opening;

[0008] An insulating assembly includes a first insulating member and a second insulating member. The first insulating member abuts against the side of the cover plate facing the receiving cavity. The second insulating member is stacked on top of the first insulating member, and one end of the second insulating member is rotatably connected to one end of the first insulating member. A portion of the tab is located between the first insulating member and the second insulating member.

[0009] The adhesive is bonded to the first insulating component, the second insulating component, and the cover plate.

[0010] According to a first aspect of this application, the first insulating member is provided with a first injection hole, the second insulating member is provided with a second injection hole, the cover plate is provided with an injection groove on the side near the first insulating member, the first injection hole connects the second injection hole and the injection groove, and the adhesive body is embedded in the first injection hole, the second injection hole and the injection groove.

[0011] According to a first aspect of this application, the glue injection groove includes a first groove segment and a second groove segment, the first groove segment connecting the second groove segment and the first glue injection hole, and the inner diameter of the second groove segment being larger than the inner diameter of the first groove segment.

[0012] The second injection hole includes a first hole segment and a second hole segment. The first hole segment connects the first injection hole and the second hole segment, and the inner diameter of the second hole segment is larger than the inner diameter of the first hole segment.

[0013] The adhesive body includes a first connecting segment, a transition segment, and a second connecting segment. The first connecting segment and the second connecting segment are respectively connected to opposite ends of the transition segment. The outer diameters of the first connecting segment and the second connecting segment are both larger than the outer diameter of the transition segment. The first connecting segment and the second connecting segment are respectively embedded in the second hole segment and the second groove segment.

[0014] According to a first aspect of this application, a positioning protrusion is provided on the side of the first injection hole facing the second insulating member, and the positioning protrusion is embedded in the second injection hole.

[0015] According to a first aspect of this application, the single-cell battery further includes:

[0016] An insulating sheet is wrapped around the outside of the battery cell. The top of the insulating sheet is located between the first insulating member and the second insulating member. The top of the insulating sheet is provided with a third injection hole, which is provided corresponding to the first injection hole and the second injection hole. The adhesive body is embedded in the third injection hole.

[0017] According to a first aspect of this application, the first insulating member has a recessed mounting groove on the side near the insulating sheet, and the insulating sheet has a boss on the side near the first insulating member, the boss being embedded in the mounting groove.

[0018] According to a first aspect of this application, the cover plate is provided with an explosion-proof valve mounting hole, and the first insulating member is provided with a vent hole, the projection of the vent hole on the cover plate partially overlapping with the explosion-proof valve mounting hole;

[0019] The second insulating element includes a first fin and a second fin, the first fin and the second fin are arranged opposite to each other, one end of the first fin and one end of the second fin are respectively rotatably connected to the two ends of the first insulating element, the other end of the first fin is provided with a first filter screen, the other end of the second fin is provided with a second filter screen, and the first filter screen and the second filter screen are provided corresponding to the vent hole.

[0020] According to a first aspect of this application, a mounting groove is recessed on one side of the first insulating member, and the first filter screen and the second filter screen overlap each other in the mounting groove.

[0021] According to a first aspect of this application, the edge of the second insulating member is provided with a limiting protrusion extending toward the first insulating member.

[0022] Secondly, an electrical appliance is also provided, including:

[0023] The single-cell battery as described in the previous embodiment.

[0024] The single-cell battery and electrical device provided in this application embodiment fix the first insulating component, the second insulating component, and the cover plate relatively by means of an adhesive, eliminating the snap-fit ​​structure between the first insulating component and the second insulating component. Compared with the snap-fit ​​structure between the first insulating component and the second insulating component, the adhesive occupies less space, which can free up more space and thus provide more space for the tab design. Attached Figure Description

[0025] The above and other objects, features, and advantages of this application will become more apparent from the more detailed description of the embodiments of this application in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0026] Figure 1 is an exploded schematic diagram of a single cell battery provided in an exemplary embodiment of this application.

[0027] Figure 2 is a cross-sectional view of a single battery provided in an exemplary embodiment of this application.

[0028] Figure 3 is a schematic diagram of the structure of the insulating component provided in an exemplary embodiment of this application after it has been unfolded, from a first perspective.

[0029] Figure 4 is a schematic diagram of the structure of the cover plate provided in an exemplary embodiment of this application.

[0030] Figure 5 is a schematic diagram of the structure of an adhesive provided in an exemplary embodiment of this application.

[0031] Figure 6 is a cross-sectional view of AA in Figure 4.

[0032] Figure 7 is an enlarged view of point C in Figure 6.

[0033] Figure 8 is a schematic diagram of the structure of the first insulating member and the second insulating member provided in an exemplary embodiment of this application, unfolded, from a second perspective.

[0034] Figure 9 is a cross-sectional view of section BB in Figure 8.

[0035] Figure 10 is an enlarged schematic diagram of point D in Figure 9.

[0036] Figure 11 is a schematic diagram of the structure of the first and second insulating members provided in an exemplary embodiment of this application after being unfolded, from a third perspective.

[0037] Figure 12 is a schematic diagram of the structure of an insulating sheet provided in an exemplary embodiment of this application.

[0038] Figure 13 is a schematic diagram of the structure of a single cell battery in the first core-combined state provided in an exemplary embodiment of this application.

[0039] Figure 14 is a schematic diagram of the structure of a single cell battery in the second core-combined state provided in an exemplary embodiment of this application.

[0040] Figure 15 is a schematic diagram of the structure of a single cell in the third core-combining state provided in an exemplary embodiment of this application.

[0041] Reference numerals: 110-Cover plate; 111-Glue injection groove; 1111-First groove section; 1112-Second groove section; 112-Explosion-proof valve mounting hole; 120-Insulating component; 121-First insulating element; 1211-First glue injection hole; 1212-Positioning protrusion; 1213-Ventilation hole; 1214-Assembly groove; 122-Second insulating element; 1221-Second glue injection hole; 12211-First hole section; 12212-Second hole section; 1222-First fin; 1223-Second fin; 1224-First filter screen; 12 25-Second filter screen; 1226-Limiting protrusion; 130-Adhesive body; 131-First connecting section; 132-Transition section; 133-Second connecting section; 200-Single battery cell; 210-Housing shell; 211-Opening; 212-Receiving cavity; 220-Battery cell; 221-Electrical tab; 230-Insulating sheet; 231-Boss; 232-Third injection hole; 240-Insulating film; 250-Explosion-proof valve; 260-Cover plate patch; 270-Explosion-proof valve patch; 280-Terminal post; 290-Third insulating component; 310-Sealing ring. Detailed Implementation

[0042] Hereinafter, exemplary embodiments according to this application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein.

[0043] Figure 1 is an exploded view of a single battery provided in an exemplary embodiment of this application. As shown in Figure 1, the single battery 200 provided in this embodiment may include a housing 210, a cell 220, and a cover plate 110. The housing 210 is provided with a receiving cavity 212, which has an opening 211. The cell 220 is disposed in the receiving cavity 212. The cover plate 110 is disposed at the end of the housing 210 and can be used to close the aforementioned opening 211.

[0044] It should be understood that both the housing 210 and the cover plate 110 can prevent external foreign objects from entering the battery cell 220 and play a protective role for the battery cell 220.

[0045] As shown in Figure 1, the single cell 200 may also include an insulating film 240, which covers the outer wall of the housing 210. The insulating film 240 can prevent the housing 210 from directly contacting external conductive objects, and at the same time can prevent the housing 210 from being bumped or scratched, thus protecting the housing 210.

[0046] As shown in Figure 1, the single cell 200 may also include a cover plate patch 260. The cover plate patch 260 is attached to the outside of the cover plate 110, which can prevent the cover plate 110 from contacting external conductive objects, especially external conductive objects from directly contacting the terminal and the cover plate 110. At the same time, it can prevent the cover plate 110 from being bumped or scratched, thus protecting the cover plate 110.

[0047] Figure 2 is a cross-sectional view of a single battery cell provided in an exemplary embodiment of this application. Figure 3 is a structural schematic diagram of the insulating assembly provided in an exemplary embodiment of this application after being unfolded from a first perspective. As shown in Figures 1 and 3, the single battery cell 200 may further include an insulating assembly 120, which is located between the cover plate 110 and the cell 220 to prevent the cell 220 from directly contacting the cover plate 110 and causing problems such as short circuits in the cell 220. The insulating assembly 120 may include a first insulating member 121 and a second insulating member 122. The first insulating member 121 abuts against the side of the cover plate 110 facing the receiving cavity 212, and the second insulating member 122 is stacked on top of the first insulating member 121. One end of the second insulating member 122 is rotatably connected to one end of the first insulating member 121.

[0048] It should be noted that the second insulating member 122 can rotate relative to the first insulating member 121. For example, in the state shown in Figure 2, the second insulating member 122 rotates to a state where it is folded relative to the first insulating member 121. In the state shown in Figure 3, the second insulating member 122 rotates to a state where it is unfolded relative to the first insulating member 121.

[0049] It should be noted that the battery cell 220 is provided with tabs 221. In practical applications, the second insulating member 122 is rotated to the unfolded state shown in Figure 3, and the tabs 221 are placed inside the first insulating member 121 (i.e., the side of the first insulating member 121 closest to the battery cell 220). Then, the second insulating member 122 is rotated to the folded state shown in Figure 2. In this way, a portion of the tabs 221 is located between the first insulating member 121 and the second insulating member 122, and is electrically connected to the pole post 280 (usually mounted on the cover plate 110). This can protect the tabs 221 and prevent them from being inserted upside down. The first insulating member 121 and the second insulating member 122 can block the cover plate 110 and the battery cell 220, preventing the cover plate 110 from communicating with the battery cell 220 and avoiding short circuits.

[0050] In one embodiment, both the first insulating member 121 and the second insulating member 122 are plastic parts.

[0051] As shown in Figure 1, the single cell 200 may also include an adhesive body 130, which is bonded to the first insulating member 121, the second insulating member 122, and the cover plate 110.

[0052] It should be understood that the adhesive body 130 can fix the first insulating member 121, the second insulating member 122 and the cover plate 110 relative to each other. In this way, after the tab 221 is assembled between the first insulating member 121 and the second insulating member 122, the adhesive body 130 can keep the first insulating member 121 and the second insulating member 122 in the folded state shown in FIG2.

[0053] It should be noted that the single cell 200 provided in this application embodiment uses an adhesive 130 to fix the first insulating member 121, the second insulating member 122 and the cover plate 110 relatively, eliminating the snap-fit ​​structure between the first insulating member 121 and the second insulating member 122. Compared with the snap-fit ​​structure between the first insulating member 121 and the second insulating member 122, the adhesive 130 occupies less space, which can free up more space, thereby providing more space for the design of the tab 221.

[0054] As shown in Figures 1 and 2, the single cell 200 may also include a third insulating member 290. The third insulating member 290 is sleeved on the outside of the terminal post 280 and is located on the outside of the cover plate 110 (i.e., the side of the cover plate 110 away from the cell 220). The third insulating member 290 can prevent the terminal post 280 from being directly connected to the cover plate 110, thus avoiding short circuit accidents.

[0055] As shown in Figure 1, the single cell 200 may also include a sealing ring 310. The sealing ring 310 is sleeved on the outside of the terminal post 280 and abuts against the inside of the cover plate 110 (i.e. the side of the cover plate 110 close to the cell 220). The sealing ring 310 can improve the sealing performance, prevent electrolyte leakage, and prevent external foreign objects from entering the cell 220.

[0056] Figure 4 is a schematic diagram of the structure of a cover plate provided in an exemplary embodiment of this application. As shown in Figures 3 and 4, the first insulating member 121 is provided with a first glue injection hole 1211, the second insulating member 122 is provided with a second glue injection hole 1221, and the cover plate 110 is provided with a glue injection groove 111 on the side near the first insulating member 121. The first glue injection hole 1211 is located between the second glue injection hole 1221 and the glue injection groove 111, and the first glue injection hole 1211 connects the second glue injection hole 1221 and the glue injection groove 111.

[0057] In practical applications, the tab 221 is first extended to the side of the first insulator 121 near the cell 220. Then, the second insulator 122 is rotated so that the first insulator 121 and the second insulator 122 are in a folded state, confining the tab 221 between the first insulator 121 and the second insulator 122. Then, adhesive is injected through the second injection hole 1221. The adhesive flows through the second injection hole 1221 to the first injection hole 1211 and the injection groove 111. After solidification, an adhesive body 130 is formed. That is, the adhesive body 130 is embedded in the first injection hole 1211, the second injection hole 1221 and the injection groove 111, which serves to fix the first insulator 121, the second insulator 122 and the cover plate 110.

[0058] In one embodiment, the number of first injection holes 1211 can be one, two, or more, etc. The number of second injection holes 1221 is the same as the number of first injection holes 1211, and can also be one, two, or more, etc. The number of injection grooves 111 is the same as the number of first injection holes 1211, and can also be one, two, or more, etc.

[0059] As shown in Figures 3 and 4, in one embodiment, there are four first injection holes 1211, four second injection holes 1221, and four injection grooves 111. The four first injection holes 1211, four second injection holes 1221, and four injection grooves 111 correspond one-to-one. In this way, adhesive bodies 130 are formed in the four sets of first injection holes 1211, second injection holes 1221, and injection grooves 111, which can effectively improve the connection stability between the first insulating component 121, the second insulating component 122, and the cover plate 110.

[0060] Figure 5 is a schematic diagram of the adhesive body provided in an exemplary embodiment of this application. As shown in Figure 5, the adhesive body 130 includes a first connecting segment 131, a transition segment 132, and a second connecting segment 133. The first connecting segment 131 and the second connecting segment 133 are respectively connected to opposite ends of the transition segment 132. The outer diameters of both the first connecting segment 131 and the second connecting segment 133 are larger than the outer diameter of the transition segment 132. In practical applications, the shape of the aforementioned adhesive body 130 can be considered similar to that of a dumbbell, which is beneficial for achieving a more stable fixing effect. The shapes of the glue injection groove 111 and the second glue injection hole 1221 will be described in detail below.

[0061] Figure 6 is a cross-sectional view of AA in Figure 4. Figure 7 is an enlarged schematic diagram of point C in Figure 6. As shown in Figures 6 and 7, the glue injection groove 111 includes a first groove segment 1111 and a second groove segment 1112. The first groove segment 1111 can connect the second groove segment 1112 and the first glue injection hole 1211. The inner diameter of the second groove segment 1112 is larger than the inner diameter of the first groove segment 1111.

[0062] It should be understood that after the adhesive filling the second groove 1112 solidifies, it can form the aforementioned second connecting section 133. The second connecting section 133 is embedded in the second groove 1112. The outer diameter of the second connecting section 133 is adapted to the inner diameter of the second groove 1112. Therefore, the outer diameter of the second connecting section 133 is larger than the inner diameter of the first groove 1111. The second connecting section 133 is not easy to pass through the first groove 1111, and the adhesive body 130 is not easy to detach from the glue injection groove 111, which is beneficial to improving the assembly stability of the adhesive body 130.

[0063] Figure 8 is a structural schematic diagram of the first and second insulating members provided in an exemplary embodiment of this application after being unfolded, viewed from a second perspective. Figure 9 is a cross-sectional view at point BB in Figure 8. Figure 10 is an enlarged schematic diagram at point D in Figure 9. As shown in Figures 8 to 10, the second injection hole 1221 includes a first hole segment 12211 and a second hole segment 12212. In the folded state of the first insulating member 121 and the second insulating member 122, the first hole segment 12211 connects the first injection hole 1211 and the second hole segment 12212, and the inner diameter of the second hole segment 12212 is larger than the inner diameter of the first hole segment 12211.

[0064] It should be understood that after the adhesive filling the second hole segment 12212 solidifies, it can form the aforementioned first connecting segment 131. The first connecting segment 131 is embedded in the second hole segment 12212. The outer diameter of the first connecting segment 131 is adapted to the inner diameter of the second hole segment 12212. Therefore, the outer diameter of the first connecting segment 131 is larger than the inner diameter of the first hole segment 12212. The first connecting segment 131 is not easy to pass through the first hole segment 12211, and the adhesive body 130 is not easy to detach from the second injection hole 1221. This is beneficial to improving the assembly stability of the adhesive body 130.

[0065] Figure 11 is a schematic diagram of the structure of the first insulating member and the second insulating member provided in an exemplary embodiment of this application after being unfolded in a third view. As shown in Figure 11, a positioning protrusion 1212 is provided on the side of the edge of the first glue injection hole 1211 facing the second insulating member 122.

[0066] It should be noted that during the process of rotating the second insulating component 122 to fold with the first insulating component 121, the position to which the second insulating component 122 needs to be rotated can be determined by aligning the second injection hole 1221 with the positioning protrusion 1212. Then, the positioning protrusion 1212 is embedded in the second injection hole 1221, which allows for rapid positioning of the second insulating component 122 and improves the assembly accuracy between the second insulating component 122 and the first insulating component 121. Furthermore, after the positioning protrusion 1212 is embedded in the second injection hole 1221, it can prevent the second insulating component 122 from shifting relative to the first insulating component 121 during subsequent glue injection, thus improving glue injection efficiency and accuracy.

[0067] As shown in Figure 11, in one embodiment, the positioning protrusion 1212 is an annular protrusion surrounding the edge of the first injection hole 1211. In this way, after the positioning protrusion 1212 is embedded in the second injection hole 1221, the second injection hole 1221 can be aligned with the first injection hole 1211, which is beneficial to improving the molding quality of the adhesive in the first injection hole 1211 and the second injection hole 1221.

[0068] Figure 12 is a schematic diagram of the structure of an insulating sheet provided in an exemplary embodiment of this application. As shown in Figures 1 and 12, the single cell 200 may also include an insulating sheet 230, which covers the outside of the cell 220, reducing direct contact between the cell 220 and the casing 210, and playing a role in insulation and protection.

[0069] Generally, when the single cell 200 is assembled, the top of the insulating sheet 230 is located between the first insulating member 121 and the second insulating member 122. When the first insulating member 121 and the second insulating member 122 are in a folded state, the top of the insulating sheet 230 can be limited.

[0070] As shown in Figure 12, the top of the insulating sheet 230 is provided with a third glue injection hole 232, which corresponds to the first glue injection hole 1211 and the second glue injection hole 1221. During the glue injection process, the glue first passes through the second glue injection hole 1221, then through the third glue injection hole 232, then through the first glue injection hole 1211, and finally reaches the glue injection tank 111. After the glue solidifies in the third glue injection hole 232, it forms a part of the adhesive body 130, that is, a part of the adhesive body 130 is embedded in the third glue injection hole 232. The adhesive body 130 can fix the insulating sheet 230, the first insulating element 121, the second insulating element 122, and the cover plate 110 relatively.

[0071] As shown in Figures 11 and 12, the first insulator has a recessed mounting groove 1214 on the side near the insulating sheet 230, and the insulating sheet 230 has a boss 231 on the side near the first insulating component 121.

[0072] It should be noted that during the process of assembling the top of the insulating sheet 230 between the first insulating member 121 and the second insulating member 122, the boss 231 can be aligned with the assembly groove 1214 first, and then the boss 231 can be inserted into the assembly groove 1214. This allows for quick positioning of the top of the insulating sheet 230, improving assembly efficiency. Furthermore, the boss 231 and the assembly groove 1214 cooperate to provide a certain degree of restraint on the top of the insulating sheet 230, effectively improving the assembly stability of the insulating sheet 230 and preventing it from easily moving relative to the first insulating member 121.

[0073] It should be noted that during the assembly of the insulating sheet 230, the position where the top of the insulating sheet 230 needs to be assembled can be determined by aligning the boss 231 with the assembly groove 1214, and then embedding the boss 231 into the assembly groove 1214. This allows for rapid positioning of the insulating sheet 230, which helps improve the assembly accuracy between the insulating sheet 230 and the first insulating component 121. Furthermore, after the boss 231 is embedded in the assembly groove 1214, it can prevent the insulating sheet 230 from shifting relative to the first insulating component 121 during the subsequent glue injection process, which helps improve glue injection efficiency and accuracy.

[0074] As shown in Figure 1, the cover plate 110 is provided with an explosion-proof valve mounting hole 112, which can be used to assemble the explosion-proof valve 250. The explosion-proof valve 250 is provided with a weak part. In practical applications, when a large amount of gas is generated inside the battery (for example, in the event of a short circuit, overcharge, or over-discharge), and the gas pressure reaches the pressure threshold, the weak part of the explosion-proof valve 250 ruptures, and the gas will be discharged outward through the rupture point of the explosion-proof valve 250.

[0075] As shown in Figure 1, the single cell 200 may also include an explosion-proof valve patch 270, which is attached to the outer surface of the explosion-proof valve 250 to prevent the explosion-proof valve from being affected by external impacts and thus its pressure threshold.

[0076] As shown in Figures 1 and 3, the first insulating component 121 is provided with a vent 1213, the projection of which onto the cover plate 110 partially overlaps with the explosion-proof valve mounting hole 112. This means that during the gas discharge process inside the single-cell battery 200, the gas can pass through the vent 1213 and then exit through the explosion-proof valve mounting hole 112, preventing the first insulating component 121 from blocking gas discharge and improving the safety performance of the single-cell battery 200.

[0077] It should be noted that in related technologies, the first insulating component 121 is fixed to the cover plate 110 by welding or hot melting. The welding and hot melting process releases heat, which can affect the welding quality of the explosion-proof valve 250. However, in this embodiment, the first insulating component 121 and the cover plate 110 are fixed by injecting adhesive and allowing it to solidify to form a bond 130. The entire fixing process can be completed at room temperature. Therefore, the fixing process does not affect the welding quality of the explosion-proof valve 250, effectively ensuring the assembly stability of the explosion-proof valve 250.

[0078] As shown in Figures 3, 8 and 10, the second insulating member 122 may further include a first fin 1222 and a second fin 1223, which are arranged opposite to each other. One end of the first fin 1222 and one end of the second fin 1223 are rotatably connected to the two opposite ends of the first insulating member 121, respectively.

[0079] In practical applications, a positive electrode tab is usually provided between the first fin 1222 and the first insulator 121. The positive electrode tab extends from the battery cell 220 and then extends between the first fin 1222 and the first insulator 121, and is electrically connected to the positive terminal. A negative electrode tab is usually provided between the second fin 1223 and the first insulator 121. The negative electrode tab extends from the battery cell 220 and then extends between the second fin 1223 and the first insulator 121, and is electrically connected to the negative terminal.

[0080] As shown in Figures 3, 8, and 10, one end of the first fin 1222 is rotatably connected to the first insulating member 121, and the other end of the first fin 1222 is provided with a first filter screen 1224. When the first fin 1222 is rotated to be folded with the first insulating member 121, the first filter screen 1224 is aligned with the vent hole 1213. On the one hand, the first filter screen 1224 can assist in the discharge of gas when a large amount of gas is generated inside the single cell 200. On the other hand, the first filter screen 1224 can prevent impurities such as broken electrode plates and tabs inside the cell 220 from being ejected and affecting other cells.

[0081] As shown in Figures 3, 8, and 10, one end of the second fin 1223 is rotatably connected to the first insulating member 121, and the other end of the second fin 1223 is provided with a second filter screen 1225. When the second fin 1223 is rotated to be folded with the first insulating member 121, the second filter screen 1225 is aligned with the vent hole 1213. On the one hand, the second filter screen 1225 can assist in the discharge of gas when a large amount of gas is generated inside the single cell 200. On the other hand, the second filter screen 1225 can prevent impurities such as broken electrode plates and tabs inside the core from being ejected and affecting other cells.

[0082] As shown in Figures 8 and 10, a mounting groove 1214 is recessed on one side of the first insulating member 121, and the first filter screen 1224 and the second filter screen 1225 overlap with each other in the mounting groove 1214. Firstly, the overlap of the first filter screen 1224 and the second filter screen 1225 effectively improves the filtration effect and further prevents the ejection of internal foreign objects. Secondly, the overlapping of the first filter screen 1224 and the second filter screen 1225 results in a combined thickness, leading to higher strength compared to either the first filter screen 1224 or the second filter screen 1225 alone. Therefore, in practical applications, the individual thicknesses of the first filter screen 1224 and the second filter screen 1225 can be appropriately reduced. This ensures that the strength after overlapping meets the strength requirements while also mitigating the problem of the second insulating member 122 being too thick and easily encroaching on the internal space of the single battery cell 200. Thirdly, the mounting groove 1214 recessed in the first insulating member 121 can not only position the installation positions of the first filter screen 1224 and the second filter screen 1225, improving the assembly efficiency of the first filter screen 1224 and the second filter screen 1225, but also make full use of the thickness space of the first insulating member 121, reducing the overall space occupied by the first insulating member 121, the first filter screen 1224 and the second filter screen 1225 in the thickness direction, and improving the space utilization rate inside the single cell 200.

[0083] As shown in Figures 3, 8 and 10, the edge of the second insulating member 122 is provided with a limiting protrusion 1226 extending toward the first insulating member 121.

[0084] It should be noted that when the first insulating member 121 and the second insulating member 122 are in a folded state, the limiting protrusion 1226 can limit the objects inside the first insulating member 121 and the second insulating member 122. For example, if the top of the insulating sheet 230 is located between the first insulating member 121 and the second insulating member 122, the limiting protrusion 1226 can prevent the top of the insulating sheet 230 from disengaging from the area between the first insulating member 121 and the second insulating member 122, thereby improving the assembly stability of the insulating sheet 230.

[0085] In one embodiment, limiting protrusions 1226 are provided on both opposite sides of the first fin 1222 and the second fin 1223 are provided on both opposite sides. When the first fin 1222 and the second fin 1223 are rotated to a state where they are folded relative to the first insulating member 121, the two limiting protrusions 1226 on the first fin 1222 and the two limiting protrusions 1226 on the second fin 1223 can surround and form a limiting area.

[0086] Figure 13 is a schematic diagram of the structure of a single cell battery in the first core-combined state according to an exemplary embodiment of this application. Figure 14 is a schematic diagram of the structure of a single cell battery in the second core-combined state according to an exemplary embodiment of this application. Figure 15 is a schematic diagram of the structure of a single cell battery in the third core-combined state according to an exemplary embodiment of this application. The core-winding process of the single cell battery 200 is described below with reference to Figures 13 to 15. Specifically, in the state shown in Figure 13, the first insulating member 121 is disposed on the inner side of the cover plate 110, the first fin 1222 and the second fin 1223 are unfolded relative to the first insulating member 121, the insulating sheet 230 is disposed on the outer surface of the cell 220, and the tab 221 of the cell 220 and the top of the insulating sheet 230 are disposed on the inner side of the first insulating member 121. Then, the first fin 1222 and the second fin 1223 rotate relative to the first insulator 121, and the first fin 1222, the second fin 1223, and the first insulator 121 are in a folded state, switching to the state shown in Figure 14. Then, glue is injected into the second glue injection hole 1221 (including the second glue injection hole 1221 on the first fin 1222 and the second glue injection hole 1221 on the second fin 1223). The glue fills the third glue injection hole 232, the first glue injection hole 1211, and the glue injection groove 111, and the formed adhesive body 130 fixes the first insulator 121, the second insulator 122, the insulating sheet 230, and the cover plate 110 relatively. Then, the battery cell 220 is folded over and the two battery cells 220 are joined together, switching to the state shown in Figure 15. Then, the battery cell 220 in the state shown in Figure 15 can be installed into the aforementioned housing 210.

[0087] This application embodiment also provides an electrical device, which includes a single battery 200 as described in the previous embodiment and has all the functions of the single battery 200.

[0088] The beneficial effects of the electrical equipment provided in this application embodiment can be referenced to the beneficial effects of the aforementioned single battery 200.

[0089] In one embodiment, the aforementioned single battery cell 200 may be a lithium-ion battery, a sodium-ion battery, or a magnesium-ion battery, and its external outline may be cylindrical, flat, cuboid, or other shapes, but is not limited thereto.

[0090] In one embodiment, the aforementioned electrical equipment includes the aforementioned single-cell battery 200, and is capable of being powered by the aforementioned single-cell battery 200. The aforementioned electrical equipment may be a vehicle, mobile phone, portable device, laptop computer, ship, spacecraft, electric toy, power tool, energy storage device, amusement equipment, elevator, and lifting equipment, etc. Vehicles may be gasoline-powered vehicles, natural gas-powered vehicles, or new energy vehicles; new energy vehicles may be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, or electric airplane toys, etc.; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.; energy storage devices may be energy storage walls, base station energy storage, container energy storage, etc.; amusement equipment may be a carousel, a drop tower, etc.

[0091] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0092] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0093] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0094] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0095] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A single-cell battery, characterized in that, include: A housing (210) is provided with a receiving cavity (212) having an opening (211); a battery cell (220) is disposed in the receiving cavity (212), and the battery cell (220) is provided with tabs (221); a cover plate (110) is disposed at the end of the housing (210), and the cover plate (110) is used to close the opening (211); an insulating assembly (120) includes a first insulating member (121) and a second insulating member (122), the first insulating member (121) and the cover plate (110) facing the housing (212). The cavity (212) abuts against one side, the second insulating member (122) is stacked with the first insulating member (121), and one end of the second insulating member (122) is rotatably connected to one end of the first insulating member (121); wherein, a portion of the tab (221) is located between the first insulating member (121) and the second insulating member (122); the adhesive body (130) is bonded to the first insulating member (121), the second insulating member (122) and the cover plate (110).

2. The single-cell battery according to claim 1, characterized in that, The first insulating component (121) is provided with a first glue injection hole (1211), the second insulating component (122) is provided with a second glue injection hole (1221), the cover plate (110) is provided with a glue injection groove (111) on the side near the first insulating component (121), the first glue injection hole (1211) connects the second glue injection hole (1221) and the glue injection groove (111), and the adhesive body (130) is embedded in the first glue injection hole (1211), the second glue injection hole (1221) and the glue injection groove (111).

3. The single-cell battery according to claim 2, characterized in that, The glue injection groove (111) includes a first groove segment (1111) and a second groove segment (1112). The first groove segment (1111) connects the second groove segment (1112) and the first glue injection hole (1211). The inner diameter of the second groove segment (1112) is larger than the inner diameter of the first groove segment (1111). The second glue injection hole (1221) includes a first hole segment (12211) and a second hole segment (12212). The first hole segment (12211) connects the first glue injection hole (1211) and the second hole segment (12212). The inner diameter of the second hole segment (12212) is larger than the inner diameter of the first groove segment (12212). The inner diameter of the first hole segment (12211); the adhesive body (130) includes a first connecting segment (131), a transition segment (132) and a second connecting segment (133), the first connecting segment (131) and the second connecting segment (133) are respectively connected to the opposite ends of the transition segment (132), the outer diameter of the first connecting segment (131) and the second connecting segment (133) are both larger than the outer diameter of the transition segment (132), and the first connecting segment (131) and the second connecting segment (133) are respectively embedded in the second hole segment (12212) and the second groove segment (1112).

4. The single-cell battery according to claim 2, characterized in that, The first injection hole (1211) has a positioning protrusion (1212) on the side facing the second insulating member (122), and the positioning protrusion (1212) is embedded in the second injection hole (1221).

5. The single-cell battery according to claim 2, characterized in that, The single battery also includes: an insulating sheet (230) covering the outside of the cell (220), the top of the insulating sheet (230) being located between the first insulating member (121) and the second insulating member (122), the top of the insulating sheet (230) being provided with a third injection hole (232), the third injection hole (232) being provided corresponding to the first injection hole (1211) and the second injection hole (1221), and the adhesive body (130) being embedded in the third injection hole (232).

6. The single-cell battery according to claim 5, characterized in that, The first insulating member (121) has a recessed mounting groove (1214) on the side near the insulating sheet (230), and the insulating sheet (230) has a boss (231) on the side near the first insulating member (121), and the boss (231) is embedded in the mounting groove (1214).

7. The single-cell battery according to any one of claims 1 to 6, characterized in that, The cover plate (110) is provided with an explosion-proof valve mounting hole (112), and the first insulating member (121) is provided with a vent hole (1213). The projection of the vent hole (1213) on the cover plate (110) partially overlaps with the explosion-proof valve mounting hole (112). The second insulating member (122) includes a first fin (1222) and a second fin (1223). The first fin (1222) and the second fin (1223) are arranged opposite to each other. One end of the first fin (1222) and one end of the second fin (1223) are respectively rotatably connected to both ends of the first insulating member (121). The other end of the first fin (1222) is provided with a first filter screen (1224), and the other end of the second fin (1223) is provided with a second filter screen (1225). The first filter screen (1224) and the second filter screen (1225) are arranged corresponding to the vent hole (1213).

8. The single-cell battery according to claim 7, characterized in that, The first insulating member (121) has a recessed mounting groove (1214) on one side, and the first filter screen (1224) and the second filter screen (1225) overlap each other in the mounting groove (1214).

9. The single-cell battery according to any one of claims 1 to 6, characterized in that, The edge of the second insulating member (122) is provided with a limiting protrusion (1226) extending toward the first insulating member (121).

10. An electrical appliance, characterized in that, include: The single-cell battery as described in any one of claims 1 to 9.

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