Battery and power consuming device

Abstract

This utility model relates to the field of battery technology and discloses a battery and an electrical device, comprising: a battery cell, including a casing, a positive electrode plate, a negative electrode plate, and a first positive electrode post, wherein the positive and negative electrode plates are disposed within the casing, the negative electrode plate is electrically connected to the casing, and the first positive electrode post is disposed within the casing and electrically connected to the positive electrode plate; and a first protection module, including a first circuit board, a first positive connecting piece, and a first negative connecting piece, wherein the first positive connecting piece and the first negative connecting piece are disposed on the first circuit board, the first circuit board module has a first receiving groove, the first negative connecting piece is located outside the first receiving groove and connected to the casing, the first positive connecting piece is located within the first receiving groove, and the first positive electrode post is inserted into the first receiving groove and connected to the first positive connecting piece. The battery structure of this utility model embodiment is simple and has high energy density.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to batteries and electrical equipment. Background Technology

[0002] A steel-cased battery typically includes a casing, a positive terminal, a negative terminal, a battery cell, and a protection module. Both the positive and negative terminals are mounted in the casing, with at least a portion of each terminal exposed. The battery cell is located inside the casing, and both the positive and negative terminals are connected to it. The protection module is connected to the positive and negative terminals via nickel strips to detect the charging and discharging current, voltage, and temperature of the battery cell. When the detected values ​​exceed the set safety limits, the protection module automatically disconnects the charging and discharging circuit to prevent damage to the battery cell and accidents.

[0003] In related technologies, steel-cased batteries connect the cells to the casing to simplify the battery structure, and the casing charges the negative terminal of the steel-cased battery. The protection module is connected to the positive terminal and the casing through a nickel plate. However, due to the height difference between the casing and the positive terminal, there is a large gap between the protection module and the casing, which affects the energy density of the steel-cased battery. Utility Model Content

[0004] In view of this, the present invention provides a battery and an electrical device to solve the problem of low battery energy density.

[0005] In a first aspect, this utility model provides a battery, comprising: a battery cell, including a casing, a positive electrode plate, a negative electrode plate, and a first positive electrode post, wherein the positive electrode plate and the negative electrode plate are disposed within the casing, the negative electrode plate is electrically connected to the casing, and the first positive electrode post is disposed within the casing and electrically connected to the positive electrode plate; and a first protection module, including a first circuit board, a first positive electrode connecting piece, and a first negative electrode connecting piece, wherein the first positive electrode connecting piece and the first negative electrode connecting piece are disposed on the first circuit board, the first circuit board module has a first receiving groove, the first negative electrode connecting piece is located outside the first receiving groove and connected to the casing, the first positive electrode connecting piece is located within the first receiving groove, and the first positive electrode post is inserted into the first receiving groove and connected to the first positive electrode connecting piece.

[0006] Beneficial Effects: In this embodiment of the battery, since the negative electrode of the cell is directly connected to the casing, and the casing acts as the negative electrode post, the battery does not require an additional negative electrode post. This improves the battery's fast-charging capability and simplifies the battery structure by eliminating the need for a dedicated negative electrode post. By setting a first protection module, the positive electrode post, positive electrode connector, first circuit board, negative electrode connector, casing, negative electrode post, and positive electrode post are connected to form a protection circuit. This circuit can detect parameters such as current, voltage, and temperature during battery charging and discharging. When the detected value of any of these parameters exceeds a preset safety threshold, the first protection module automatically disconnects the charging and discharging circuit to prevent battery damage and improve electrical safety. Furthermore, the first protection module has a first receiving groove for accommodating the connection of the first positive electrode post. While connecting the casing and the first negative electrode connector, and connecting the first positive electrode post and the positive electrode connector, it can adapt to the height of the first positive electrode post, reducing the impact of the first positive electrode post height on the battery's energy density and thus improving the battery's energy density.

[0007] In one optional embodiment, there is one first negative electrode connector; or, there are multiple first negative electrode connectors, which are spaced apart circumferentially along the first receiving groove.

[0008] Beneficial effects: When there is only one first negative electrode connecting piece, the processing steps can be reduced, and production efficiency can be improved. When there are multiple first negative electrode connecting pieces, on the one hand, multiple connections are formed between the first protection module and the housing, which can improve the connection strength between the first protection module and the housing and increase the stability of the relative position between the first protection module and the housing; on the other hand, the parameters of different areas of the housing can be monitored, improving the accuracy of the monitoring data.

[0009] In one optional embodiment, the first positive electrode connector is disposed at the bottom of the first receiving groove, and the end face of the first positive electrode post abuts against the first positive electrode connector.

[0010] Beneficial effects: The end face of the first positive terminal abuts against the first positive terminal connecting piece. Even if there is a deviation in the installation between the first protection module and the housing, it will not affect the connection between the first positive terminal and the first positive terminal connecting piece, which helps to improve the connection reliability between the first positive terminal and the first positive terminal connecting piece.

[0011] In one alternative embodiment, the battery cell further includes an insulating pad disposed between the first positive terminal and the housing, and at least partially exposed from the housing, wherein the portion of the insulating pad exposed from the housing is located within the first receiving groove.

[0012] Beneficial effects: The insulating gasket prevents the first positive terminal from contacting the casing, reducing the probability of a short circuit caused by the electrical connection between the first positive terminal and the casing. By placing the portion of the insulating gasket exposed from the casing within the first receiving groove, insulation between the first positive terminal and the casing is achieved, while avoiding gaps between the first protection module and the casing caused by the insulating gasket, thus reducing the impact of the insulating gasket on the battery size and ensuring the battery's energy density.

[0013] In one optional implementation, the first protection module is provided with a power detection element and / or an encryption element.

[0014] Beneficial effects: By setting up a power detection device, battery power can be monitored. By setting up an encryption device, the battery can be encrypted and authenticated, preventing security risks from counterfeit or substandard batteries and improving battery safety.

[0015] In one optional embodiment, the battery cell further includes a second positive terminal, which is disposed on the housing and electrically connected to the positive electrode plate. The second positive terminal and the first positive terminal are disposed on different sides of the housing. The battery further includes a second protection module, which includes a second circuit board and a second positive electrode connecting piece. The second circuit board has a second receiving groove, the second positive electrode connecting piece is located in the second receiving groove, and the second positive terminal is inserted into the second receiving groove and connected to the second positive electrode connecting piece.

[0016] Beneficial effects: By setting a second positive terminal, the charging speed of the battery can be increased, improving its fast-charging capability. By setting a second protection module, the second positive terminal, second positive connector, second circuit board, first negative connector, housing, negative electrode, and positive electrode are connected to form a protection circuit. This circuit can detect parameters such as current, voltage, and temperature during battery charging and discharging. When the detected value of any of these parameters exceeds a preset safety threshold, the second protection module automatically disconnects the charging and discharging circuit to prevent battery damage and improve electrical safety. Furthermore, the second protection module has a second receiving slot for accommodating the second positive terminal connection. While the first positive terminal and first positive connector are connected, the height of the second positive terminal can be adapted, reducing the impact of the second positive terminal height on battery energy density and thus contributing to increased battery energy density.

[0017] In one optional embodiment, the second protection module further includes a second negative electrode connector, which is connected to the second circuit board and the housing; or, the second circuit board is in direct contact with the housing.

[0018] Beneficial effects: When the second protection module has a second negative terminal connector, an additional protection circuit is added, increasing the redundancy of the protection circuit and improving safety. When the second protection module does not have a second negative terminal connector, the number of parts is reduced, lowering cost and weight, and improving battery life.

[0019] In one alternative embodiment, the first circuit board and the second circuit board are electrically connected via conductive elements.

[0020] Beneficial effects: The first protection module and the second protection module can share the power detection component, encryption component, and charging / discharging interface and communication interface for connecting to the electrical equipment, which can reduce the number of parts, reduce costs, and reduce the number of connecting wires between the module and the electrical equipment, making the wiring layout more convenient.

[0021] In one optional embodiment, the battery cell further includes a third positive terminal, which is disposed on the housing and electrically connected to the positive electrode plate. The first positive terminal, the second positive terminal, and the third positive terminal are disposed on different sides of the housing. The battery further includes a third protection module, which includes a third circuit board and a third positive electrode connecting piece. The third circuit board has a third receiving groove, the third positive electrode connecting piece is located in the third receiving groove, and the third positive terminal is inserted into the third receiving groove and connected to the third positive electrode connecting piece.

[0022] Beneficial effects: By setting a third positive terminal, the charging speed of the battery can be increased, and the fast charging capability of the battery can be improved.

[0023] Secondly, this utility model also provides an electrical device, including the battery described in the first aspect.

[0024] Beneficial effects: For electrical devices in the second category, using batteries from the first category can simplify the structure and increase energy density. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the structure of a battery cell with a first positive terminal post, as shown in an embodiment of the present utility model.

[0027] Figure 2One of the schematic diagrams of a battery cell with a first positive terminal and a second positive terminal, according to an embodiment of the present utility model;

[0028] Figure 3 The second schematic diagram shows the structure of the battery cell of this utility model, which has a first positive terminal and a second positive terminal.

[0029] Figure 4 The second schematic diagram shows the structure of the battery cell of this utility model embodiment, which has a first positive terminal, a second positive terminal, and a third positive terminal.

[0030] Figure 5 This is a schematic diagram of the structure of the positive electrode sheet and the positive electrode tab in an embodiment of this utility model;

[0031] Figure 6 This is a schematic diagram of the negative electrode sheet and negative electrode tab in an embodiment of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Battery;

[0034] 100. Battery cell; 110. Casing; 120. Positive electrode plate; 121. Positive electrode tab; 130. Negative electrode plate; 131. Negative electrode tab; 140. First positive electrode post; 150. Insulating pad; 160. Second positive electrode post; 170. Third positive electrode post;

[0035] 200, First protection module; 201, First receiving slot; 210, First circuit board; 220, First positive electrode connecting piece; 230, First negative electrode connecting piece;

[0036] 300, Second protection module; 301, Second receiving slot; 310, Second circuit board; 320, Second positive electrode connecting piece; 330, Second negative electrode connecting piece;

[0037] 400, Third protection module; 401, Third receiving slot; 410, Third circuit board; 420, Third positive electrode connecting piece; 430, Third negative electrode connecting piece. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0039] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0040] In the description of this utility model, "a plurality of" means two or more. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] Currently, lithium-ion batteries are widely used in 3C electronic products and other fields. These batteries primarily use aluminum-plastic film soft-pack packaging. However, the presence of top and side seals on the cells affects the energy density of soft-pack batteries. Meanwhile, consumers increasingly demand fast charging capabilities for batteries in 3C electronic products. Adding battery tabs is an effective way to improve fast charging performance, but this undoubtedly further impacts the energy density of soft-pack batteries. This is because adding more tabs requires more packaging space for lead-out and encapsulation, thus reducing the cell's energy density.

[0043] The following is combined Figures 1 to 6 The following describes embodiments of the present invention.

[0044] According to an embodiment of the present invention, a battery 1 is provided, comprising a battery cell 100 and a first protection module 200.

[0045] The battery cell 100 includes a housing 110, a positive electrode 120, a negative electrode 130, and a first positive electrode post 140. The positive electrode 120 and the negative electrode 130 are disposed inside the housing 110. The negative electrode 130 is electrically connected to the housing 110 and can be connected to the housing 110 via a negative electrode tab 131. The first positive electrode post 140 is disposed in the housing 110 and is electrically connected to the positive electrode 120. The positive electrode 120 and the first positive electrode post 140 can be connected via a positive electrode tab 121.

[0046] The first protection module 200 includes a first circuit board 210, a first positive electrode connector 220, and a first negative electrode connector 230. The first positive electrode connector 220 and the first negative electrode connector 230 are disposed on the first circuit board 210. The first circuit board 210 module is provided with a first receiving groove 201. The first negative electrode connector 230 is located outside the first receiving groove 201 and is connected to the housing 110. The first positive electrode connector 220 is located inside the first receiving groove 201. The first positive electrode post 140 is inserted into the first receiving groove 201 and is connected to the first positive electrode connector 220.

[0047] For example, the battery cell 100 can be a square battery cell, the casing 110 can be a square casing, and the battery 1 can be a square battery, so that the battery 1 can be used in 3C electronic products such as mobile phones, tablets, or computers. Furthermore, the first positive electrode connecting piece 220 and the first positive electrode post 140 can be welded by laser welding or brazing, and the first negative electrode connecting piece 230 and the casing 110 can be welded by laser welding or brazing.

[0048] Compared to the soft-pack batteries in existing 3C electronic products, the battery cell 100 of this embodiment includes a housing 110, which can be a metal housing, such as a steel housing. The battery cell 100 does not have a top seal or a side seal, so tabs can be provided on the top, bottom and sides of the battery cell 100. While improving the fast charging capability of the battery cell 100, the battery 1 also has a high energy density, and the metal housing facilitates heat dissipation of the battery 1, thus optimizing the working performance of the battery 1.

[0049] Since the negative electrode 130 is directly connected to the housing 110, and the housing 110 acts as the negative electrode post, the battery 1 does not need to be provided with an additional negative electrode post. This not only improves the fast charging capability of the battery 1, but also omits a dedicated negative electrode post, simplifying the structure of the battery 1.

[0050] By setting up a first protection module 200, the first positive terminal 140, the first positive connecting piece 220, the first circuit board 210, the first negative connecting piece 230, the housing 110, the negative plate 130, and the positive plate 120 are connected to form a protection circuit. This circuit can detect parameters such as current, voltage, and temperature during the charging and discharging process of the battery 1. When the detected value of any of the above parameters exceeds a preset safety threshold, the first protection module 200 will automatically disconnect the charging and discharging circuit to avoid damage to the battery 1 and improve electrical safety. Furthermore, the first protection module 200 is provided with a first receiving groove 201 for accommodating the connection of the first positive terminal 140. While realizing the connection between the housing 110 and the first negative connecting piece 230, and the connection between the first positive terminal 140 and the first positive connecting piece 220, it can adapt to the height of the first positive terminal 140, reducing the impact of the height of the first positive terminal 140 on the energy density of the battery 1, thus helping to improve the energy density of the battery 1.

[0051] In some embodiments, there is only one first negative electrode connector 230. This reduces the number of first negative electrode connectors 230, thereby reducing processing steps and improving production efficiency.

[0052] Or, such as Figures 1-4 As shown, in some embodiments, there are multiple first negative electrode connecting pieces 230, which are spaced apart circumferentially along the first receiving groove 201. This allows for multi-point connections between the first protection module 200 and the housing 110, improving the connection strength and stability of their relative positions. Furthermore, it enables monitoring of parameters in different areas of the housing 110, improving the accuracy of the monitoring data.

[0053] like Figures 2-4 As shown, in some embodiments, the battery cell 100 further includes a second positive terminal 160, which is disposed on the housing 110 and electrically connected to the positive electrode plate 120. The second positive terminal 160 and the first positive terminal 140 are disposed on different sides of the housing 110.

[0054] The positive electrode 120 is provided with a positive electrode tab 121 that is connected to the second positive electrode post 160, and the negative electrode 130 may also be provided with a positive electrode tab 121 that is connected to the side of the housing 110 where the second positive electrode post 160 is located.

[0055] By setting a second positive terminal 160, the charging speed of battery 1 can be increased, and the fast charging capability of battery 1 can be improved.

[0056] For example, combined Figure 5 and Figure 6As shown, the first positive terminal 140 can be disposed on the top surface of the housing 110, and the second positive terminal 160 can be disposed on the bottom surface of the housing 110. The positions of the first positive terminal 140 and the second positive terminal 160 can be interchanged. The positive electrode tab 121 is connected to the positive electrode plate 120, and the positive electrode tab 121 extends beyond both sides of the width direction of the positive electrode plate 120. The two ends of the positive electrode tab 121 are connected to the first positive terminal 140 and the second positive terminal 160, respectively. Furthermore, the negative electrode tab 131 is connected to the negative electrode plate 130, and the negative electrode tab 131 extends beyond both sides of the width direction of the negative electrode plate 130. The two ends of the negative electrode tab 131 are connected to the top and bottom ends of the housing 110, thereby greatly improving the fast charging capability of the battery cell 100.

[0057] Furthermore, the battery 1 also includes a second protection module 300, which includes a second circuit board 310 and a second positive electrode connecting piece 320. The second circuit board 310 is provided with a second receiving groove 301, the second positive electrode connecting piece 320 is located in the second receiving groove 301, and the second positive electrode post 160 is inserted into the second receiving groove 301 and connected to the second positive electrode connecting piece 320.

[0058] By setting up a second protection module 300, the second positive terminal 160, the second positive connecting piece 320, the second circuit board 310, the first negative connecting piece 230, the housing 110, the negative electrode 130, and the positive electrode 120 are connected to form a protection circuit. This circuit can detect parameters such as current, voltage, and temperature during the charging and discharging process of battery 1. When the detected value of any of the above parameters exceeds a preset safety threshold, the second protection module 300 will automatically disconnect the charging and discharging circuit to avoid damage to battery 1 and improve electrical safety. Furthermore, the second protection module 300 is provided with a second receiving slot 301 for accommodating the connection of the second positive terminal 160. While the second positive terminal 160 and the second positive connecting piece 320 are connected, the slot can adapt to the height of the second positive terminal 160, reducing the impact of the height of the second positive terminal 160 on the energy density of battery 1 and thus improving the energy density of battery 1.

[0059] like Figures 3-4 As shown, in some embodiments, the second protection module 300 further includes a second negative electrode connecting piece 330, which is connected to the second circuit board 310 and the housing 110. The second positive electrode post 160, the second positive electrode connecting piece 320, the second circuit board 310, the second negative electrode connecting piece 330, the housing 110, the negative electrode piece 130, and the positive electrode piece 120 are connected to form a protection circuit, which can increase the number of protection circuits and avoid the inability to effectively monitor the parameters of the battery 1 due to problems such as damage, detachment, or poor soldering of the first negative electrode connecting piece 230, thereby improving the safety of the battery 1.

[0060] like Figure 2As shown, in some embodiments, the second circuit board 310 is in direct contact with the housing 110. That is, the second protection module 300 does not have a second negative electrode connector 330. Since the first negative electrode connector 230 is present, the second protection module 300 can already monitor the charging and discharging state of the battery 1. Therefore, there is no need to set up an additional second negative electrode connector 330, which can reduce the number of parts, reduce cost and weight, and improve the battery 1's range.

[0061] like Figures 1-4 As shown, in some embodiments, the first positive electrode connector 220 is disposed at the bottom of the first receiving groove 201. Alternatively, the second positive electrode connector 320 is disposed at the bottom of the second receiving groove 301. Or, the first positive electrode connector 220 is disposed at the bottom of the first receiving groove 201, and the second positive electrode connector 320 is disposed at the bottom of the second receiving groove 301.

[0062] In this way, the end face of the first positive terminal 140 abuts against the first positive terminal connecting piece 220. Even if there is a deviation in the installation between the first protection module 200 and the housing 110, it will not affect the connection between the first positive terminal 140 and the first positive terminal connecting piece 220, which is beneficial to improving the connection reliability between the first positive terminal 140 and the first positive terminal connecting piece 220.

[0063] Furthermore, the end face of the second positive terminal 160 abuts against the second positive terminal connecting piece 320. Even if there is a deviation in the installation between the second protection module 300 and the housing 110, it will not affect the connection between the second positive terminal 160 and the second positive terminal connecting piece 320, which is beneficial to improving the connection reliability between the second positive terminal 160 and the second positive terminal connecting piece 320.

[0064] like Figures 1-4 As shown, in some embodiments, the battery 1 further includes an insulating pad 150 disposed between the first positive terminal 140 and the housing 110. The insulating pad 150 can prevent the first positive terminal 140 and the housing 110 from contacting each other, thereby reducing the probability of a short circuit caused by the electrical connection between the first positive terminal 140 and the housing 110.

[0065] Specifically, the insulating pad 150 is at least partially exposed from the housing 110, and the portion of the insulating pad 150 exposed from the housing 110 is located in the first receiving groove 201. The insulating pad 150 and the side wall of the first receiving groove 201 can be spaced apart to avoid interference between the insulating pad 150 and the first protection module 200, and to facilitate the assembly between the first protection module 200 and the battery cell 100.

[0066] By placing the insulating pad 150 inside the first receiving groove 201, insulation is achieved between the first positive terminal post 140 and the housing 110, while avoiding gaps between the first protection module 200 and the housing 110 caused by the setting of the insulating pad 150, reducing the impact of the insulating pad 150 on the size of the battery 1, and thus ensuring the energy density of the battery 1.

[0067] An insulating pad 150 may also be provided between the second positive terminal 160 and the housing 110 to prevent short circuits caused by contact between the second positive terminal 160 and the housing 110. The insulating pad 150 located between the second positive terminal 160 and the housing 110 is located in the second receiving groove 301.

[0068] In some implementations, the first protection module 200 is equipped with a power detection device. This power detection device may include a fuel gauge chip. By setting up the power detection device, the power level of the battery 1 can be monitored to remind the user, preventing the user from failing to charge in time, and ensuring that charging stops promptly once the battery 1 is fully charged, thus extending the battery 1's lifespan.

[0069] In some implementations, the first protection module 200 is equipped with an encryption component. This encryption component can be an encryption chip or an ID resistor. By setting the encryption component, the battery 1 can be encrypted and authenticated, preventing security risks posed by counterfeit or substandard batteries 1 and improving the safety of battery 1 in use.

[0070] It should be noted that the first protection module 200 may only have a power detection component, or the first protection module 200 may only have an encryption component, or the first protection module 200 may have both a power detection component and an encryption component.

[0071] Furthermore, the second protection module 300 may also be provided with at least one of a power detection element and an encryption element to increase the reliability of monitoring the power of the battery 1 and to achieve reliable encryption authentication of the battery 1.

[0072] In some embodiments, the first circuit board 210 and the second circuit board 310 are electrically connected by a conductive element (not shown in the figure).

[0073] For example, the first protection module 200 and the second protection module 300 may have the same structure and function, or they may have different structures and functions. Furthermore, the first circuit board 210 and the second circuit board 310 may be electrically connected via a flexible printed circuit (FPC), or via wires, or via conductive copper busbars, or via wiring on the motherboard within the electrical equipment.

[0074] In this way, the first protection module 200 and the second protection module 300 can share the power detection component, encryption component, and charging / discharging interface and communication interface for connecting to the electrical equipment, which can reduce the number of parts, reduce costs, and reduce the number of connecting wires between the module and the electrical equipment, making the wiring layout more convenient.

[0075] like Figure 4 As shown, in some embodiments, the battery cell 100 further includes a third positive terminal 170, which is disposed on the housing 110 and electrically connected to the positive electrode plate 120. The first positive terminal 140, the second positive terminal 160 and the third positive terminal 170 are disposed on different sides of the housing 110.

[0076] For example, combined Figure 5 and Figure 6 As shown, the first positive terminal 140 can be disposed on the top surface of the housing 110, the second positive terminal 160 can be disposed on the bottom surface of the housing 110, and the third positive terminal 170 can be disposed on the side surface of the housing 110; the positions of any two can be interchanged. Furthermore, the positive electrode tab 121 is connected to the positive electrode plate 120, and the positive electrode tab 121 extends beyond both sides of the width direction of the positive electrode plate 120. The two ends of the positive electrode tab 121 are respectively connected to the first positive terminal 140 and the second positive terminal 160, and the positive electrode tab 121 can also be connected to the third positive terminal 170. Further, the negative electrode tab 131 is connected to the negative electrode plate 130, and the negative electrode tab 131 extends beyond both sides of the width direction of the negative electrode plate 130. The two ends of the negative electrode tab 131 are respectively connected to the top and bottom of the housing 110, thereby greatly improving the fast charging capability of the battery cell 100.

[0077] By setting a third positive terminal 170, the charging speed of battery 1 is further increased, and the fast charging capability of battery 1 is further improved.

[0078] Furthermore, the battery 1 also includes a third protection module 400, which includes a third circuit board 410 and a third positive electrode connector 420. The third circuit board 410 is provided with a third receiving groove 401, the third positive electrode connector 420 is located in the third receiving groove 401, and the third positive electrode post 170 is inserted into the third receiving groove 401 and connected to the third positive electrode connector 420.

[0079] By setting up a third protection module 400, the third positive terminal 170, the third positive connecting piece 420, the third circuit board 410, the first negative connecting piece 230, the housing 110, the negative electrode 130, and the positive electrode 120 are connected to form a protection circuit. This circuit can detect parameters such as current, voltage, and temperature during the charging and discharging process of battery 1. When the detected value of any of the above parameters exceeds a preset safety threshold, the third protection module 400 will automatically disconnect the charging and discharging circuit to avoid damage to battery 1 and improve electrical safety. Furthermore, the third protection module 400 is provided with a third receiving slot 401 for accommodating the connection of the third positive terminal 170. While the third positive terminal 170 and the third positive connecting piece 420 are connected, the height of the third positive terminal 170 can be adapted to reduce the impact of the height of the third positive terminal 170 on the energy density of battery 1, thus improving the energy density of battery 1.

[0080] like Figure 4 As shown, in some embodiments, the third protection module 400 further includes a third negative electrode connector 430, which is connected to the third circuit board 410 and the housing 110. The third positive electrode post 170, the third positive electrode connector 420, the third circuit board 410, the third negative electrode connector 430, the housing 110, the negative electrode 130, and the positive electrode 120 are connected to form a protection circuit, which can increase the number of protection circuits and avoid the inability to effectively monitor the parameters of the battery 1 due to problems such as damage, detachment, or poor soldering of the first negative electrode connector 230, thereby improving the safety of the battery 1.

[0081] In some embodiments, the third circuit board 410 is in direct contact with the housing 110. That is, the third protection module 400 does not have a third negative electrode connector 430. Since the first negative electrode connector 230 is present, the third protection module 400 is already able to monitor the charging and discharging state of the battery 1. Therefore, there is no need to set up an additional third negative electrode connector 430, which can reduce the number of parts, reduce cost and weight, and improve the battery 1's range.

[0082] like Figure 4As shown, in some embodiments, an insulating gasket 150 may also be provided between the third positive terminal 170 and the housing 110 to prevent short circuits caused by contact between the third positive terminal 170 and the housing 110. The insulating gasket 150 located between the third positive terminal 170 and the housing 110 is located in the third receiving groove 401.

[0083] In some embodiments, the third protection module 400 may also be provided with at least one of a power detection element and an encryption element to increase the reliability of monitoring the power of the battery 1 and to achieve reliable encryption authentication of the battery 1.

[0084] In some other embodiments, the third protection module 400 is electrically connected to the first protection module 200. The third protection module 400 and the first protection module 200 share the power detection device and the encryption device, so the third protection module 400 does not need to be equipped with an additional power detection device and encryption device.

[0085] According to an embodiment of the present invention, another aspect provides an electrical device, which includes the aforementioned battery 1. The electrical device can be a 3C electronic device such as a mobile phone, tablet, or laptop computer.

[0086] The electrical equipment of this utility model embodiment uses the above-mentioned battery 1, which simplifies the structure and improves the energy density.

[0087] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A battery, characterized in that, include: A battery cell (100) includes a housing (110), a positive electrode plate (120), a negative electrode plate (130), and a first positive electrode post (140). The positive electrode plate (120) and the negative electrode plate (130) are disposed inside the housing (110). The negative electrode plate (130) is electrically connected to the housing (110). The first positive electrode post (140) is disposed in the housing (110) and is electrically connected to the positive electrode plate (120). The first protection module (200) includes a first circuit board (210), a first positive electrode connector (220), and a first negative electrode connector (230). The first positive electrode connector (220) and the first negative electrode connector (230) are disposed on the first circuit board (210). The first circuit board (210) is provided with a first receiving groove (201). The first negative electrode connector (230) is located outside the first receiving groove (201) and connected to the housing (110). The first positive electrode connector (220) is located inside the first receiving groove (201). The first positive electrode post (140) is inserted into the first receiving groove (201) and connected to the first positive electrode connector (220).

2. The battery according to claim 1, characterized in that, The first negative electrode connecting piece (230) is one; Alternatively, there may be multiple first negative electrode connecting pieces (230), with multiple first negative electrode connecting pieces (230) arranged at circumferential intervals along the first receiving groove (201).

3. The battery according to claim 1, characterized in that, The first positive electrode connector (220) is disposed at the bottom of the first receiving groove (201), and the end face of the first positive electrode post (140) abuts against the first positive electrode connector (220).

4. The battery according to claim 1, characterized in that, The battery cell (100) also includes: An insulating pad (150) is disposed between the first positive terminal post (140) and the housing (110), and at least partially protrudes from the housing (110), with the portion of the insulating pad (150) protruding from the housing (110) located within the first receiving groove (201).

5. The battery according to any one of claims 1-4, characterized in that, The first protection module (200) is equipped with a power detection element and / or an encryption element.

6. The battery according to any one of claims 1-4, characterized in that, The battery cell (100) further includes a second positive terminal (160), which is disposed on the housing (110) and electrically connected to the positive electrode plate (120). The second positive terminal (160) and the first positive terminal (140) are disposed on different sides of the housing (110). The battery (1) further includes a second protection module (300), which includes a second circuit board (310) and a second positive electrode connector (320). The second circuit board (310) is provided with a second receiving groove (301), the second positive electrode connector (320) is located in the second receiving groove (301), and the second positive electrode post (160) is inserted into the second receiving groove (301) and connected to the second positive electrode connector (320).

7. The battery according to claim 6, characterized in that, The second protection module (300) further includes a second negative electrode connecting piece (330), which is connected to the second circuit board (310) and the housing (110); Alternatively, the second circuit board (310) may be in direct contact with the housing (110).

8. The battery according to claim 6, characterized in that, The first circuit board (210) and the second circuit board (310) are electrically connected through conductive elements.

9. The battery according to claim 6, characterized in that, The battery cell (100) further includes a third positive terminal (170), which is disposed on the housing (110) and electrically connected to the positive electrode plate (120). The first positive terminal (140), the second positive terminal (160) and the third positive terminal (170) are disposed on different sides of the housing (110). The battery (1) further includes a third protection module (400), which includes a third circuit board (410) and a third positive electrode connector (420). The third circuit board (410) is provided with a third receiving groove (401), and the third positive electrode connector (420) is located in the third receiving groove (401). The third positive electrode post (170) is inserted into the third receiving groove (401) and connected to the third positive electrode connector (420).

10. An electrical appliance, characterized in that, Includes the battery (1) according to any one of claims 1-9.

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