Battery and terminal equipment

Abstract

The utility model discloses a battery and terminal equipment, and belongs to the technical field of batteries. The battery comprises a battery cell assembly, a circuit protection assembly and an electric connecting piece, the battery cell assembly is used for storing electric energy and comprises a shell and a battery cell, the interior of the shell is hollow to form a battery cell containing space capable of containing the battery cell, the battery cell is arranged in the battery cell containing space, and the outer surface of the shell is provided with a sunken area sunken towards the interior of the shell; and the motor is connected with the shell. The circuit protection assembly is used for providing circuit protection for the battery cell, at least part of the circuit protection assembly is arranged in the sunken area, and the electric connecting piece is electrically connected with the battery cell and the circuit protection assembly. According to the technical scheme, the shell is concaved towards the interior of the shell to a certain extent in the concave area so as to form the avoiding space used for containing the circuit protection assembly, other areas of the shell do not need to be concaved towards the interior of the shell, the situation that idle space exists around the circuit protection assembly can be avoided, and then it is guaranteed that waste of the battery on the internal space of the terminal equipment is small.

Description

Technical Field

[0001] The present disclosure relates to the technical field of batteries, and particularly to a battery and a terminal device. Background Art

[0002] With the popularization of electronic products, batteries have become essential components in people's daily lives. A battery usually consists of a battery cell and a protection board for protecting or detecting the battery cell.

[0003] In related technologies, a battery includes a battery cell and a circuit board. The battery cell has a rectangular-shaped housing, and the circuit board is parallel to one end face of the battery cell and is connected to the housing.

[0004] The area of the circuit board is smaller than the area of the corresponding end face of the battery cell. Therefore, there is an idle space on one side of the circuit board, and the idle space causes a large waste of the internal space of the terminal device. Summary of the Utility Model

[0005] Embodiments of the present disclosure provide a battery and a terminal device, which can solve the above technical problems existing in related technologies. The technical solutions are as follows:

[0006] In a first aspect, a battery is provided. The battery includes a battery cell assembly, a circuit protection assembly, and an electrical connection member;

[0007] The battery cell assembly is used for storing electrical energy; the battery cell assembly includes a housing and a battery cell. The interior of the housing is hollow to form a battery cell accommodation space capable of accommodating the battery cell. The battery cell is disposed in the battery cell accommodation space. The outer surface of the housing has a recessed area that is recessed towards the interior of the housing and is connected to the housing;

[0008] The circuit protection assembly is used for providing circuit protection for the battery cell, and at least a part of the circuit protection assembly is disposed in the recessed area;

[0009] The electrical connection member is electrically connected to the battery cell and the circuit protection assembly respectively.

[0010] In a possible implementation manner, the shape and size of the circuit protection assembly match those of the recessed area, so that the circuit protection assembly can be entirely disposed in the recessed area.

[0011] In a possible implementation manner, the recessed area is disposed near the connection between the electrical connection member and the battery cell.

[0012] In a possible implementation, the housing is in the shape of a cuboid. The housing has opposite first and second side walls. The first side wall is provided with the recessed area. The recessed area and the non-recessed area of the first side wall form a stepped structure. The stepped structure includes a first step portion and a second step portion. The distance between the first step portion and the second side wall is less than the distance between the second step portion and the second side wall.

[0013] In a possible implementation, the battery cell accommodation space includes a first accommodation space between the first step portion and the second side wall and a second accommodation space between the second step portion and the second side wall;

[0014] The battery cells include a first battery cell and a second battery cell. The first battery cell is located in the first accommodation space and is adapted to the size of the first accommodation space. The second battery cell is located in the second accommodation space and is adapted to the size of the second accommodation space.

[0015] In a possible implementation, the first battery cell includes a first current collector portion and a first tab portion. The first tab portion is located at an end of the first current collector portion close to the first side wall. The first tab portion is electrically connected to the first current collector portion and the electrical connection member respectively.

[0016] In a possible implementation, the second battery cell includes a second current collector portion and a second tab portion. The second tab portion is located at an end of the second current collector portion. And the second tab portion is electrically connected to the second current collector portion and the electrical connection member respectively.

[0017] In a possible implementation, the second step portion has a through hole for accommodating the electrical connection member.

[0018] In a possible implementation, the circuit protection component includes a circuit board and at least one protection element. The circuit board is connected to the housing and is electrically connected to the electrical connection member. The at least one protection element is electrically connected to the circuit board.

[0019] In a possible implementation, the circuit protection component further includes a protective layer covering the protection element.

[0020] In a possible implementation, the circuit protection component is adhesively bonded to the housing.

[0021] In a second aspect, a terminal device is provided. The terminal device includes the battery according to any one of the first aspect.

[0022] The beneficial effects brought by the technical solutions provided by the embodiments of the present disclosure at least include:

[0023] In an embodiment of the present disclosure, the housing is recessed to a certain extent towards the interior of the housing in the recessed area to form an avoidance space for accommodating the circuit protection component, while other areas of the housing do not need to be recessed towards the interior of the housing, which can avoid the existence of idle space around the circuit protection component, thereby reducing the waste of the internal space of the terminal device by the battery.

[0024] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 is one of the explosion diagrams of a battery provided by an embodiment of the present disclosure;

[0027] Figure 2 is another explosion diagram of a battery provided by an embodiment of the present disclosure;

[0028] Figure 3 is one of the structural diagrams of a battery provided by an embodiment of the present disclosure;

[0029] Figure 4 is another structural diagram of a battery provided by an embodiment of the present disclosure;

[0030] Figure 5 is the structural diagram of a battery in the related art.

[0031] REFERENCE MARKS:

[0032] 1. Core component;

[0033] 11. Housing, 11a. Recessed area, 11b. First side wall, 11c. Second side wall, 11d. Non-recessed area;

[0034] 111. Core accommodation space, 111a. First accommodation space, 111b. Second accommodation space;

[0035] 112. Step structure, 1121. First step portion, 1122. Second step portion, 1122a. Through hole;

[0036] 12. Battery cell, 121. First battery cell, 1211. First current collector, 12111. First positive current collector, 12112. First negative current collector, 12113. First separator, 1212. First tab, 1212a. First positive tab, 1212b. First negative tab;

[0037] 122. Second battery cell, 1221. Second current collector, 12211. Second positive current collector, 12212. Second negative current collector, 12213. Second separator, 1222. Second tab, 1222a. Second positive tab, 1222b. Second negative tab;

[0038] 2. Circuit protection component, 21. Circuit board, 22. Protection element, 23. Protective layer;

[0039] 3. Electrical connector. Detailed implementation mode

[0040] With the popularization of electronic products, people's requirements for battery parameters are getting higher and higher. How to improve the space utilization rate to increase the battery capacity while keeping the occupied space of the battery unchanged is an important research direction in battery design.

[0041] Refer to Figure 5 As shown, in the related art, the battery may include a battery cell assembly 1 and a circuit board 21. The battery cell assembly 1 has a rectangular housing 11, and the inside of the housing 11 can be used to accommodate components such as positive and negative electrode plates. The circuit board 21 is vertically placed on one side of the housing 11 and is connected to the housing 11.

[0042] The bottom of the vertically placed circuit board 21 has idle space (i.e., the area within the dotted line box in Figure 5 ). In the case of a certain overall volume of the battery, this idle space causes waste in some areas of the battery and is not conducive to improving the battery capacity.

[0043] To make the purpose, technical solution and advantages of the present disclosure clearer, the following will further describe the embodiments of the present application in detail with reference to the drawings.

[0044] Refer to Figure 1 As shown, an embodiment of the present disclosure provides a battery, which may include a battery cell assembly 1, a circuit protection component 2 and an electrical connector 3.

[0045] The battery cell assembly 1 is used to store electrical energy. The battery cell assembly 1 includes a housing 11 and battery cells 12. The inside of the housing 11 is hollow to form a battery cell accommodation space 111 capable of accommodating the battery cells 12. The battery cells 12 are arranged in the battery cell accommodation space 111, and the outer surface of the housing 11 has a recessed area 11a that is recessed towards the inside of the housing 11.

[0046] The housing 11 can prevent foreign objects from entering the battery interior, avoiding adverse phenomena such as knocking, friction, and corrosion of the internal components of the battery. The housing 11 can also form a sealed space for containing the electrolyte required for the normal operation of the battery.

[0047] The present disclosure does not specifically limit the shape of the recessed area 11a, which can be matched and set according to the shape of the housing 11. For example, the recessed area 11a can be a cuboid area, a spherical area, a prismatic area, etc.

[0048] The circuit protection component 2 is used to provide circuit protection for the battery cell 12. The circuit protection component 2 is at least partially disposed in the recessed area 11a and is connected to the housing 11. The electrical connection member 3 is electrically connected to the battery cell 12 and the circuit protection component 2 respectively.

[0049] In some embodiments, the shape and size of the circuit protection component 2 match those of the recessed area 11a so that the circuit protection component 2 can be entirely disposed in the recessed area 11a.

[0050] On the one hand, when the space of the recessed area 11a is smaller than the volume of the circuit protection component 2, part of the circuit protection component 2 is suspended outside the recessed area 11a, which is not conducive to the stability of the circuit protection component 2. On the other hand, when the space of the recessed area 11a is much larger than the volume of the circuit protection component 2, and the circuit protection component 2 is completely placed in the recessed area 11a and there is still idle space in the recessed area 11a, it will occupy the size of the accommodation space 111 for the battery cell, resulting in limited accommodation space for the battery cell 12 and being not conducive to increasing the capacity of the battery.

[0051] Refer to Figure 1 As shown, in some embodiments, the recessed area 11a is disposed near the connection between the electrical connection member 3 and the battery cell 12. If the distance between the recessed area 11a and the connection between the electrical connection member 3 and the battery cell 12 is relatively far, it means that the distance between the circuit protection component 2 placed in the recessed area 11a and the connection between the electrical connection member 3 and the battery cell 12 is relatively far. At the same time, since the electrical connection member 3 is electrically connected to the battery cell 12 and the circuit protection component 2 respectively, it results in a longer connection length of the electrical connection member 3, an increase in the volume of the electrical connection member 3, an increase in the manufacturing cost of the electrical connection member 3, and occupation of space.

[0052] Therefore, disposing the recessed area 11a near the connection between the electrical connection member 3 and the battery cell 12 is conducive to reducing the volume of the electrical connection member 3, thereby reducing the manufacturing cost of the electrical connection member 3 and the occupied space.

[0053] Refer to Figure 2As shown, in some embodiments, the housing 11 is in the shape of a cuboid. The housing 11 has opposite first sidewall 11b and second sidewall 11c. The first sidewall 11b is provided with a recessed area 11a. The recessed area 11a and the non-recessed area 11d of the first sidewall 11b form a stepped structure 112. The stepped structure 112 includes a first stepped portion 1121 and a second stepped portion 1122. The distance between the first stepped portion 1121 and the second sidewall 11c is less than the distance between the second stepped portion 1122 and the second sidewall 11c. Among them, the recessed area 11a corresponds to the first stepped portion 1121, and the non-recessed area 11d corresponds to the second stepped portion 1122.

[0054] Referring to Figure 2 As shown, in some embodiments, the battery cell accommodation space 111 may include a first accommodation space 111a between the first stepped portion 1121 and the second sidewall 11c and a second accommodation space 111b between the second stepped portion 1122 and the second sidewall 11c.

[0055] The battery cell 12 may include a first battery cell 121 and a second battery cell 122. The first battery cell 121 is located in the first accommodation space 111a and is adapted to the size of the first accommodation space 111a. The second battery cell 122 is located in the second accommodation space 111b and is adapted to the size of the second accommodation space 111b.

[0056] Since the distance between the first stepped portion 1121 and the second sidewall 11c is less than the distance between the second stepped portion 1122 and the second sidewall 11c, in the direction of the line connecting the first sidewall 11b and the second sidewall 11c (referring to the X-axis shown in Figure 1 ), the length of the second battery cell 122 is greater than the length of the first battery cell 121.

[0057] At the same time, the circuit protection component 2 is located in the recessed area 11a (i.e., on the side of the first stepped portion 1121 away from the second sidewall 11b) and is connected to the housing 11. In this way, the circuit protection component 2 is located in the space avoided by the recessed area 11a relative to the non-recessed area 11d.

[0058] In the embodiments of the present disclosure, the space below the circuit protection component 2 is occupied by the second stepped portion 1122 and the second battery cell 122 placed corresponding to the second stepped portion. Compared with the related art, in the embodiments of the present disclosure, the space below the circuit protection component 2 is not wasted, but is occupied by the second battery cell 122 with an increased corresponding length. The increase in the length of the second battery cell 122 is beneficial to improving the battery capacity and meeting the higher requirements of users for the battery capacity and the battery life of the terminal device.

[0059] Referring to Figure 3As shown, in some embodiments, the first battery cell 121 may include a first current collector portion 1211 and a first tab portion 1212. The first tab portion 1212 is located at the end of the first current collector portion 1211, and the first tab portion 1212 is electrically connected to the first current collector portion 1211 and the electrical connection member 3 respectively.

[0060] The first current collector portion 1211 is used to organically connect the positive and negative electrodes together to form a closed circuit, which can ensure that current can flow smoothly from the positive electrode to the negative electrode, generate a chemical reaction inside the battery, and then generate electrical energy. The first current collector portion 1211 is made of a conductive material, which can help electrons flow from one electrode to another electrode, thereby generating current. At the same time, the first current collector portion 1211 can also help the ions inside the battery to be transported between the electrodes, so as to ensure that the battery can continuously carry out chemical reactions.

[0061] During the operation of the battery, the first current collector portion 1211 can also play a role in heat dissipation. The heat generated inside the battery can be conducted to the outside through the first current collector portion 1211, ensuring that the temperature inside the battery is appropriate, thereby improving the service life and safety of the battery.

[0062] The first tab portion 1212 is a key component for the battery to achieve electrical connection. The first tab portion 1212 is used to lead out the current generated by the first current collector portion 1211 and sequentially transmit it to the electrical connection member 3 and the circuit protection component 2.

[0063] The present disclosure does not specifically limit the connection position of the first tab portion 1212 and the first current collector portion 1211. It may be located on the side of the first current collector portion 1211 close to the first side wall 11b, or on the side of the first current collector portion 1211 close to the second side wall 11c.

[0064] Refer to Figure 3 As shown, in some embodiments, the first current collector portion 1211 includes a first positive current collector 12111, a first negative current collector 12112, and a first separator 12113. The first separator 12113 is located between the first positive current collector 12111 and the first negative current collector 12112. The first separator 12113 can prevent electrons from directly moving from the positive electrode to the negative electrode inside the battery, thereby avoiding internal short circuit of the battery.

[0065] The first tab portion 1212 includes a first positive tab 1212a and a first negative tab 1212b. The first positive tab 1212a is electrically connected to the first positive current collector 12111, and the first negative tab 1212b is electrically connected to the first negative current collector 12112.

[0066] Among them, multiple first positive current collectors 12111 are electrically connected to an electrical connector 3 through a first positive electrode tab 1212a, and the electrical connector 3 corresponds to the positive electrode of the battery. Multiple first negative current collectors 12112 are electrically connected to another electrical connector 3 through a first negative electrode tab 1212b, and the electrical connector 3 corresponds to the negative electrode of the battery. It should be noted that Figure 3 only the electrical connection between the first negative electrode tab 1212b and an electrical connector 3 is marked, and the electrical connection between the first positive electrode tab 1212a and another electrical connector 3 is not shown in Figure 3 it.

[0067] The present disclosure does not specifically limit the shapes and sizes of the first positive electrode tab 1212a and the first negative electrode tab 1212b, which can be matched and set according to the structures and sizes of the first positive current collector 12111 and the first negative current collector 12112. For example, the first positive electrode tab 1212a and the first negative electrode tab 1212b can be flat, stepped, bent, etc.

[0068] Referring to Figure 3 as shown, in some embodiments, the second battery cell 122 may include a second current collecting portion 1221 and a second electrode tab portion 1222. The second electrode tab portion 1222 is located at the end of the second current collecting portion 1221, and the second electrode tab portion 1222 is electrically connected to the second current collecting portion 1221 and the electrical connector 3 respectively.

[0069] The second current collecting portion 1221 is used to organically connect the positive and negative electrodes together to form a closed circuit, so as to ensure that current can flow smoothly from the positive electrode to the negative electrode, generate a chemical reaction inside the battery, and then generate electrical energy. The second current collecting portion 1221 is made of a conductive material, which can help electrons flow from one electrode to another electrode, thereby generating current. At the same time, the second current collecting portion 1221 can also help the ions inside the battery to be transported between the electrodes, so as to ensure that the battery can continuously carry out chemical reactions.

[0070] During the operation of the battery, the second current collecting portion 1221 can also play a role in heat dissipation. The heat generated inside the battery can be conducted to the outside through the second current collecting portion 1221 to ensure that the temperature inside the battery is appropriate, thereby improving the service life and safety of the battery.

[0071] The second electrode tab portion 1222 is a key component for the battery to achieve electrical connection. The second electrode tab portion 1222 is used to lead out the current generated by the second current collecting portion 1221 and sequentially transmit it to the electrical connector 3 and the circuit protection component 2.

[0072] The present disclosure does not specifically limit the connection position of the second pole ear portion 1222 and the second current collector portion 1221. It may be located on the side of the second current collector portion 1221 close to the first side wall 11b, or may be located on the side of the second current collector portion 1221 close to the second side wall 11c.

[0073] Referring Figure 3 As shown, in some embodiments, the second current collector portion 1221 may include a second positive current collector 12211, a second negative current collector 12212, and a second separator 12213. The second separator 12213 is located between the second positive current collector 12211 and the second negative current collector 12212. The second separator 12213 can prevent electrons from directly moving from the positive electrode to the negative electrode inside the battery, thereby avoiding internal short circuit of the battery.

[0074] The second pole ear portion 1222 includes a second positive pole ear 1222a and a second negative pole ear 1222b. The second positive pole ear 1222a is electrically connected to the second positive current collector 12211, and the second negative pole ear 1222b is electrically connected to the second negative current collector 12212.

[0075] Among them, a plurality of second positive current collectors 12211 are electrically connected to an electrical connector 3 through the second positive pole ear 1222a. This electrical connector 3 corresponds to the positive electrode of the battery. A plurality of second negative current collectors 12212 are electrically connected to another electrical connector 3 through the second negative pole ear 1222b. This electrical connector 3 corresponds to the negative electrode of the battery. It should be noted that Figure 3 only the electrical connection between the second negative pole ear 1222b and an electrical connector 3 is marked, and the electrical connection between the second positive pole ear 1222a and another electrical connector 3 is not shown in Figure 3 the figure.

[0076] The present disclosure does not specifically limit the shapes and sizes of the second positive pole ear 1222a and the second negative pole ear 1222b, which can be matched and set according to the structures and sizes of the second positive current collector 12211 and the second negative current collector 12212. For example, the second positive pole ear 1222a and the second negative pole ear 1222b can be flat, stepped, bent, etc.

[0077] In some other embodiments, the second positive current collector 12211 can be electrically connected to the first positive current collector 12111 in the first current collector portion 1211 through the second positive pole ear 1222a. Since the first positive current collector 12111 is electrically connected to an electrical connector 3 through the first positive pole ear 1212a, the electrical connection between the second positive current collector 12211 and the electrical connector 3 is thus achieved.

[0078] Based on the same principle, the second negative current collector 12212 can be electrically connected to the first negative current collector 12112 in the first current collecting part 1211 through the second negative tab 1222b. Since the first negative current collector 12112 is electrically connected to another electrical connector 3 through the first negative tab 1212b, the electrical connection between the second negative current collector 12212 and the electrical connector 3 is realized.

[0079] Referring to Figure 3 As shown, in some embodiments, the circuit protection component 2 may include a circuit board 21 and at least one protection element 22. The circuit board 21 is connected to the housing 11 and is electrically connected to the electrical connector 3. At least one protection element 22 is electrically connected to the circuit board 21.

[0080] The circuit board 21 is a printed circuit board (PCB). The size and thickness of the circuit board 21 can be matched and set according to parameters such as the connection relationship of the protection element 22 and the heat dissipation requirements. In the thickness direction of the battery (referring to the Y-axis shown in Figure 2 ), the upper surface of the circuit board 21 is lower than the upper surface of the first stepped portion 1121 to ensure that the circuit board 21 does not protrude from the upper surface of the housing 11, thereby avoiding an increase in the overall installation space of the battery due to the size of the circuit board 21.

[0081] All the protection elements 22 are electrically connected to the circuit board 21. The protection elements 22 can form various functional circuits to provide functions such as protection or detection for the battery. For example: a power circuit, a protection circuit, a power detection circuit, etc. The power circuit can adjust the output power of the battery. The protection circuit can achieve functions such as overcharge protection, over-discharge protection, and over-current protection for the battery. The power detection circuit can calculate the battery power through the detection results of relevant components.

[0082] The present disclosure does not specifically limit the types and quantities of the protection elements 22, which can be matched and set according to the requirements of different functional circuits. For example: precision resistors, metal-oxide-semiconductor field-effect transistors (MOS), coulometers, capacitors, inductors, etc.

[0083] In some embodiments, the circuit protection component 2 further includes a protective layer 23 that covers the protection elements 22. The protective layer 23 can prevent foreign objects from causing adverse phenomena such as knocking, damage, and short circuit to the protection elements 22.

[0084] In addition, the protective layer 23 can be made of a material with good heat conductivity, which is conducive to the heat dissipation of the component 22. On the one hand, the protective layer 23 can ensure that the heat generated by multiple protective components 22 can be evenly transferred to the entire protective layer 23, and then the protective layer 23 quickly transfers the heat to the external air.

[0085] On the other hand, the protective layer 23 can also balance the temperatures of various regions on the circuit board 21 and reduce the temperature difference between multiple protective components 22. For example, there are more protective components 22 in the first region of the circuit board 21 and fewer protective components 22 in the second region. The heat generated by the protective components 22 in the first region can be transferred to the second region via the protective layer 23, making the temperatures of various regions of the circuit board 21 substantially the same, which is beneficial to improving the service life of the circuit board 21.

[0086] The protective layer 23 can cover all regions of the circuit board 21 and be connected to the circuit board 21. The protective layer 23 can also only cover part of the regions of the circuit board 21 and be connected to the circuit board 21.

[0087] The present disclosure does not specifically limit the material of the protective layer 23. For example, the material of the protective layer 23 is plastic. The plastic protective layer 23 can be connected and fixed to the circuit board 21 by injection molding.

[0088] Referring to Figure 4 As shown, in some embodiments, the second stepped portion 1122 has a through hole 1122a for accommodating the electrical connector 3. The electrical connector 3 passes through the through hole 1122a from the outside of the second stepped portion 1122 into the interior of the housing 11, and then electrically connects to the first pole ear portion 1212 and the second pole ear portion 1222.

[0089] There is a sealing element at the through hole 1122a to prevent the electrolyte inside the housing 11 from leaking out of the through hole 1122a to the outside of the housing 11, thereby causing waste of the electrolyte or pollution to the surrounding environment of the battery.

[0090] In some embodiments, the circuit protection assembly 2 is adhesively bonded to the housing 11. For example, there is an adhesive layer (such as glue, etc.) between the circuit protection assembly 2 and the housing 11, or the circuit protection assembly 2 and the housing 11 are connected by processes such as injection molding.

[0091] The present disclosure does not limit the specific position where the circuit protection assembly 2 is adhesively bonded to the housing 11, and it can be at least one of the circuit board 21 being adhesively bonded to the housing 11 and the protective component 22 being adhesively bonded to the housing 11.

[0092] Based on the same concept, the embodiments of the present disclosure also provide a terminal device, which may include a battery as described in the above embodiments.

[0093] The terminal device involved in this disclosure can also be referred to as a terminal, a mobile terminal, an electronic device, a user equipment (UE), etc. Exemplarily, the terminal device can be a smart phone, a tablet computer, a laptop computer, a wearable device (such as a smart watch), etc. Or, it can also be a professional shooting device such as a digital camera, a single-lens reflex camera / mirrorless camera, a gimbal camera, an action camera, a drone, etc. Or, it can also be a device that needs to be powered by a battery, such as a car or a robotic arm. It should be understood that this disclosure does not make specific limitations on the specific technologies and specific device forms adopted by the terminal device. In the description of the above embodiments, a mobile phone is taken as an example for illustration, but this disclosure is not limited thereto.

[0094] The battery of the terminal device in the embodiments of this disclosure reduces the volume of the idle space. When the battery volume is the same, the battery capacity can be further increased, so that the design requirement of a large battery capacity can be achieved. Or, when the battery capacity is the same, the overall volume of the battery can be reduced, realizing the miniaturization, thinness and lightness of the battery.

[0095] In the description of this specification, the descriptions with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of this disclosure. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0096] It can be understood that "a plurality of" in this disclosure means two or more, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after. The singular forms of "a", "the", and "said" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0097] It can be further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other, and do not indicate a specific order or degree of importance. In fact, the expressions such as "first" and "second" can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0098] It can be further understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "front", "rear", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present embodiment and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0099] It can be further understood that unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral molding; it can be a mechanical connection, an electrical connection, or a connection that allows mutual communication; it can be a direct connection without other components between the two, or an indirect connection through an intermediate medium, and can be the internal communication between two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0100] It can be further understood that although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring these operations to be performed in the specific order shown or in a serial order, or requiring all the operations shown to obtain the desired result. In a specific environment, multitasking and parallel processing may be advantageous.

[0101] Those skilled in the art will readily conceive of other embodiments of the present disclosure after considering the specification and practicing the solutions disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common general knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the scope of the claims.

[0102] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A battery, characterized in that: include: A battery cell assembly (1) for storing electric energy; the battery cell assembly (1) comprises a shell (11) and a battery cell (12); the shell (11) is hollow inside to form a battery cell accommodating space (111) capable of accommodating the battery cell (12); the battery cell (12) is arranged in the battery cell accommodating space (111); and the outer surface of the shell (11) has a recessed area (11a) recessed toward the inside of the shell (11); A circuit protection component (2) for providing circuit protection for the battery cell (12), wherein the circuit protection component (2) is at least partially disposed in the recessed area (11a) and is connected to the housing (11); The electrical connector (3) is electrically connected to the battery core (12) and the circuit protection component (2) respectively.

2. The battery according to claim 1, characterized in that The shapes and sizes of the circuit protection component (2) and the recessed area (11a) match each other, so that the circuit protection component (2) can be completely arranged in the recessed area (11a).

3. The battery according to claim 1, characterized in that The recessed area (11a) is arranged near the connection between the electrical connector (3) and the battery core (12).

4. The battery according to claim 1, characterized in that The shell (11) is in the shape of a rectangular parallelepiped, and has a first side wall (11b) and a second side wall (11c) opposite to each other; the first side wall (11b) is provided with the recessed area (11a); the recessed area (11a) and the non-recessed area (11d) of the first side wall (11b) form a step structure (112); the step structure (112) comprises a first step portion (1121) and a second step portion (1122); the distance between the first step portion (1121) and the second side wall (11c) is smaller than the distance between the second step portion (1122) and the second side wall (11c).

5. The battery according to claim 4, characterized in that The battery cell accommodating space (111) comprises a first accommodating space (111a) between the first step portion (1121) and the second side wall (11c), and a second accommodating space (111b) between the second step portion (1122) and the second side wall (11c); The battery cell (12) comprises a first battery cell (121) and a second battery cell (122); the first battery cell (121) is located in the first accommodation space (111a) and is adapted to the size of the first accommodation space (111a); the second battery cell (122) is located in the second accommodation space (111b) and is adapted to the size of the second accommodation space (111b).

6. The battery according to claim 5, characterized in that The first battery cell (121) comprises a first current collecting portion (1211) and a first pole ear portion (1212); the first pole ear portion (1212) is located at an end of the first current collecting portion (1211) close to the first side wall (11b); and the first pole ear portion (1212) is electrically connected to the first current collecting portion (1211) and the electrical connector (3), respectively.

7. The battery according to claim 5, characterized in that The second battery cell (122) comprises a second current collecting portion (1221) and a second pole ear portion (1222); the second pole ear portion (1222) is located at the end of the second current collecting portion (1221), and the second pole ear portion (1222) is electrically connected to the second current collecting portion (1221) and the electrical connector (3), respectively.

8. The battery according to claim 4, characterized in that The second stepped portion (1122) has a through hole (1122a), and the through hole (1122a) is used to accommodate the electrical connection member (3).

9. The battery according to claim 1, characterized in that The circuit protection assembly (2) comprises a circuit board (21) and at least one protection element (22); the circuit board (21) is connected to the housing (11) and is electrically connected to the electrical connector (3); and the at least one protection element (22) is electrically connected to the circuit board (21).

10. The battery according to claim 9, characterized in that The circuit protection component (2) further comprises a protection layer (23), wherein the protection layer (23) covers the protection element (22).

11. The battery according to claim 1, characterized in that The circuit protection component (2) is bonded to the housing (11).

12. A terminal device, characterized in that: The terminal device comprises the battery as claimed in any one of claims 1-11.

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