Battery pack and electric equipment

Abstract

The utility model discloses a battery pack and electric equipment, and belongs to the technical field of batteries. The battery pack comprises a shell, a battery cell group, a circuit assembly and a first connector, a containing cavity for containing the battery cell set and the circuit assembly is formed in the shell, the battery cell set comprises at least two cylindrical battery cells arranged side by side, a gap exists between every two adjacent cylindrical battery cells, the circuit assembly is electrically connected with the cylindrical battery cells, the gaps between the circuit assembly and the two adjacent cylindrical battery cells form a containing space, the first connector is arranged in the containing space, and the second connector is arranged in the containing space. The shell is electrically connected with the circuit assembly, and a first opening corresponding to the first connector is formed in the shell. By ingeniously arranging the first connector in the accommodating space formed by the circuit assembly and the cylindrical battery cell, the first connector can be prevented from occupying excessive internal space, so that the internal structure of the battery pack can be simplified, the utilization rate of the internal space of the battery pack is improved, and the overall size of the battery pack is further reduced.

Description

Technical Field

[0001] This application belongs to the technical field of batteries, and particularly relates to a battery pack and an electrical device. Background Art

[0002] With the improvement of living standards, many families have started to use smart door locks to replace mechanical door locks. Smart door locks require power support, and generally use a battery pack to supply power to the smart door lock. Therefore, the quality, performance, safety, and specifications of the battery pack are very important.

[0003] In related technologies, the battery packs used in smart door locks usually need to be provided with multiple connection ports for charging and discharging connections. However, the structural layout of the connection ports in the battery packs of related technologies is relatively complex and requires a relatively large amount of internal space of the battery pack. Summary of the Utility Model

[0004] This application aims to provide a battery pack and an electrical device, which can solve the problem that the structural layout of the connection ports in the battery pack of related technologies is relatively complex and requires a relatively large amount of internal space of the battery pack.

[0005] To solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, an embodiment of this application provides a battery pack, including: a housing, a battery cell group, a circuit assembly, and a first connector; a receiving cavity is provided in the housing, and both the battery cell group and the circuit assembly are provided in the receiving cavity; the battery cell group includes at least two cylindrical battery cells arranged side by side, there is a gap between adjacent two of the cylindrical battery cells, at least a part of the circuit assembly covers the gap to form a receiving space, the circuit assembly is electrically connected to the cylindrical battery cells, the first connector is provided in the receiving space and is electrically connected to the circuit assembly; the housing is provided with a first opening, and the first opening corresponds to the first connector.

[0007] Optionally, adjacent two of the cylindrical battery cells are arranged at intervals.

[0008] Optionally, along the arrangement direction of at least two cylindrical battery cells, the distance between adjacent two of the battery cells is 4 mm - 6 mm.

[0009] Optionally, the battery pack further includes an insulating board, the insulating board is provided between the circuit assembly and the battery cell group, and at least a part of the insulating board is recessed towards the gap to form the receiving space.

[0010] Optionally, the battery pack further includes a second connector, the second connector is provided at one end of the circuit assembly facing away from the first connector, the second connector is electrically connected to the circuit assembly, the housing is provided with a second opening, and the second opening corresponds to the second connector.

[0011] Optionally, a clamping groove is provided on one side of the second connector facing the circuit component, and at least a part of the circuit component is connected in the clamping groove.

[0012] Optionally, the first connector includes any one of a Type-C connector, an HDMI connector, and a USB connector;

[0013] And / or, the second connector includes any one of a blade connector, a circular connector, and a pluggable connector.

[0014] Optionally, the housing includes a first side surface and a second side surface which are oppositely arranged, the first side surface is a plane, and the second side surface is an arc surface.

[0015] Optionally, a positioning groove is provided at one end of the housing where the second opening is located, and the positioning groove is used for clamping connection with an external electrical device;

[0016] And / or, a boss is provided at one end of the housing where the first opening is located.

[0017] In a second aspect, an embodiment of the present application provides an electrical device, including: a device main body and the battery pack according to any one of the above, and the battery pack is used to supply power to the device main body.

[0018] In an embodiment of the present application, a receiving cavity for receiving a battery cell group and a circuit component is provided in the housing. The battery cell group includes at least two cylindrical battery cells arranged side by side, there is a gap between adjacent two cylindrical battery cells, the circuit component is electrically connected to the cylindrical battery cells, and the circuit component and the gap between adjacent two cylindrical battery cells form a receiving space. The first connector is arranged in the receiving space and is electrically connected to the circuit component. A first opening corresponding to the first connector is provided on the housing. In this way, by arranging the first connector in the receiving space formed by the circuit component and the cylindrical battery cells, the internal structural space of the battery pack can be fully utilized, the space occupied by arranging the first connector can be reduced, the utilization rate of the internal space of the battery pack can be improved, and thus the overall size of the battery pack can be reduced.

[0019] Additional aspects and advantages of the present application will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present application. Description of the Drawings

[0020] The above and / or additional aspects and advantages of the present application will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 is a schematic diagram of a battery pack according to an embodiment of the present application;

[0022] Figure 2is a partial schematic diagram of a battery pack according to an embodiment of the present application;

[0023] Figure 3 According to the embodiment of this application Figure 2 Exploded view of the battery pack;

[0024] Figure 4 This is a partial schematic diagram of a battery pack according to an embodiment of the present application.

[0025] Figure 5 is a schematic diagram of a second connector according to an embodiment of the present application;

[0026] Figure 6 is a schematic diagram of a battery pack according to an embodiment of the present application from a first viewing angle;

[0027] Figure 7 is a schematic diagram of a battery pack according to an embodiment of the present application from a second viewing angle;

[0028] Figure 8 is a schematic diagram of a battery pack according to an embodiment of the present application from a third viewing angle;

[0029] Fig. 9 According to the embodiment of this application Figure 6 Exploded view of the battery pack.

[0030] Reference numerals:

[0031] 100: battery cell group; 101: cylindrical battery cell; 102: conductive part; 103: spacing; 110: circuit assembly; 120: first connector; 130: second connector; 131: slot; 140: shell; 141: upper shell; 142: lower shell; 143: accommodating cavity; 144: first opening; 145: second opening; 146: positioning groove; 147: boss; 148: first side; 149: second side; 150: accommodating space; 160: insulating plate; 161: groove; 170: foam; 180: handle; L: spacing dimension. DETAILED DESCRIPTION

[0032] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0033] The terms "first", "second" in the description and claims of this application may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0034] In the description of this application, it should be understood that the orientation or positional relationship indicated by 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. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application 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, and therefore should not be construed as a limitation to this application.

[0035] In the description of this application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0036] The battery pack and the electrical equipment provided by the embodiments of this application will be described in detail below with reference to the drawings, through specific embodiments and their application scenarios.

[0037] As Figure 1-4 shown, the battery pack according to some embodiments of this application includes: a housing 140, a battery cell group 100, a circuit assembly 110, and a first connector 120; a receiving cavity 143 is provided in the housing 140, the battery cell group 100 and the circuit assembly 110 are both provided in the receiving cavity 143, the battery cell group 100 includes at least two cylindrical battery cells 101 arranged side by side, there is a gap between adjacent two cylindrical battery cells 101, the circuit assembly 110 is electrically connected to the cylindrical battery cells 101, the circuit assembly 110 at least partially covers the gap to form a receiving space 150, the first connector 120 is provided in the receiving space 150 and is electrically connected to the circuit assembly 110; the housing 140 is provided with a first opening 144, and the first opening 144 corresponds to the first connector 120.

[0038] Specifically, referring to Figure 2, the battery cell group 100 includes a plurality of cylindrical battery cells 101, the plurality of cylindrical battery cells 101 are arranged side by side, and a gap similar to an inverted triangle is naturally formed between adjacent two cylindrical battery cells 101 above the axis, and this gap cannot be effectively utilized in the related art. The circuit assembly 110 is disposed on one side of the battery cell group 100, and then at least part of the circuit assembly 110 covers the above-mentioned gap to form an accommodation space 150. In the embodiment of the present application, the first connector 120 is cleverly arranged in the accommodation space 150, avoiding the first connector 120 being arranged elsewhere and occupying additional internal space of the battery pack, thereby being able to simplify the internal structure of the battery pack, improve the utilization rate of the internal space of the battery pack, and further reduce the overall size of the battery pack.

[0039] In a specific application, the connection between the first connector 120 and the circuit assembly 110 can be achieved by welding. Among them, the pins of the first connector 120 are inserted into the corresponding lead holes of the circuit assembly 110 and then welded.

[0040] It should be noted that the welding method between the first connector 120 and the circuit assembly 110 can include soldering, laser welding, ultrasonic welding and other welding methods. Of course, other connection methods can also be used for the connection between the first connector 120 and the circuit assembly 110, and those skilled in the art can select according to actual needs, and the embodiments of the present application do not limit this.

[0041] In some embodiments of the present application, with reference to Figure 1 , the housing 140 further includes an upper housing 141 and a lower housing 142, and the upper housing 141 is detachably connected to the lower housing 142. Accommodation grooves are respectively provided in the upper housing 141 and the lower housing 142, and an accommodation cavity 143 is formed after the accommodation grooves in the upper housing 141 and the lower housing 142 are buckled. Snap structures that cooperate with each other are provided in the upper housing 141 and the lower housing 142, and the detachable connection between the upper housing 141 and the lower housing 142 is achieved through the snap structures. Of course, other methods can also be used for the detachable connection between the upper housing 141 and the lower housing 142, and those skilled in the art can select according to actual needs, and the embodiments of the present application do not limit this.

[0042] In a specific application, the material of the housing 140 can be selected from materials such as plastics and rubbers, and those skilled in the art can select according to actual needs, and the embodiments of the present application do not limit this. The upper housing 141 and the lower housing 142 of the housing 140 can be respectively manufactured by injection molding and other methods. Of course, other manufacturing methods can also be used for the upper housing 141 and the lower housing 142 of the housing 140, and those skilled in the art can select according to actual needs, and the embodiments of the present application do not limit this.

[0043] In the embodiment of the present application, a housing 140 is provided with a housing 143 for accommodating the cell pack 100 and the circuit assembly 110. The cell pack 100 includes at least two cylindrical cells 101 arranged side by side, with a gap between adjacent cylindrical cells 101. The circuit assembly 110 is electrically connected to the cylindrical cells 101, and the gap between the circuit assembly 110 and the two adjacent cylindrical cells 101 forms a housing space 150. The first connector 120 is disposed within the housing space 150 and is electrically connected to the circuit assembly 110. The housing 140 is provided with a first opening 144 corresponding to the first connector 120. Thus, by cleverly arranging the first connector 120 within the housing space 150 formed by the circuit assembly 110 and the cylindrical cells 101, it is possible to prevent the first connector 120 from occupying too much internal space, thereby improving the utilization of the internal space of the battery pack and reducing the overall size of the battery pack.

[0044] Optionally, refer to Figure 2 , two adjacent cylindrical battery cells 101 are arranged at intervals.

[0045] Specifically, the battery cell group 100 includes at least two cylindrical battery cells 101. The positive and negative electrodes of each cylindrical battery cell 101 are connected through corresponding conductive members 102 to form the positive and negative electrodes of the battery cell group 100, respectively. The positive and negative electrodes of the battery cell group 100 are respectively connected to the corresponding connection parts of the circuit assembly 110. The following is an example of two cylindrical battery cells 101. The conductive members 102 are welded to the cylindrical battery cells 101 by spot welding. The two cylindrical battery cells 101 are pre-set at intervals before welding. After the battery cell group 100 is assembled, the circuit assembly 110 is installed on the battery cell group 100. The circuit assembly 110 at least partially covers the corresponding positions of the two adjacent cylindrical battery cells 101 to form an accommodating space 150. The conductive member 102 can be a nickel sheet or other conductive metal material. Those skilled in the art can select it according to actual needs. The embodiment of the present application does not limit this.

[0046] In the embodiment of the present application, adjacent cylindrical battery cells 101 are spaced apart so that the gaps between the adjacent cylindrical battery cells 101 become larger, thereby ensuring that the accommodating space 150 has sufficient space to accommodate the first connector 120, thereby reducing the longitudinal thickness of the battery pack, rationally utilizing the internal space of the battery pack, and reducing the overall size of the battery pack.

[0047] In some embodiments of the present application, the battery cell group 100 includes a plurality of cylindrical battery cells 101. Each adjacent pair of the plurality of cylindrical battery cells 101 is arranged at intervals, and the circuit assembly 110 covers the gaps to form a plurality of accommodation spaces 150. Correspondingly, one first connector 120 is disposed in at least one accommodation space 150, or at least one first connector 120 is disposed in one accommodation space 150. Thereby, the number of the first connectors 120 of the battery pack and the flexibility of installation are improved, making the battery pack more flexible to use.

[0048] Optionally, referring to Figure 4 , along the arrangement direction of at least two cylindrical battery cells 101, the distance 103 between two adjacent cylindrical battery cells 101 is 4-6 mm.

[0049] Specifically, when the size of the distance 103 between two adjacent cylindrical battery cells 101 along the arrangement direction of at least two cylindrical battery cells 101 is less than 4 mm, the width of the accommodation space 150 formed by the circuit assembly 110 and the distance 103 in the arrangement direction of the cylindrical battery cells 101 is too small, resulting in the first connector 120 being unable to be normally installed; when the size of the distance 103 between two adjacent cylindrical battery cells 101 along the arrangement direction of at least two cylindrical battery cells 101 is greater than 6 mm, although the first connector 120 can be normally installed, the width of the accommodation space 150 in the arrangement direction of the cylindrical battery cells 101 is much larger than the width of the first connector 120, wasting the internal space of the battery pack.

[0050] Specifically, the size L of the distance 103 between two adjacent cylindrical battery cells 101 can be set to any value such as 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm or the range between any two values. Among them, the measurement method of the size L of the distance 103 can include: measuring the minimum linear distance between the outer edges of two adjacent cylindrical battery cells 101 as the measurement value of the size L of the distance 103; it can also be measuring the distance M between the centers of two adjacent cylindrical battery cells 101 and subtracting the radii R of the two cylindrical battery cells 101 as the measurement value of the size L of the distance 103. Those skilled in the art can select according to actual needs, and the embodiments of the present application do not limit this.

[0051] It can be understood that in order to ensure that the first connector 120 can be installed into the accommodation space 150, the size L of the distance 103 can be designed according to the maximum width of the first connector 120.

[0052] In the embodiment of the present application, by setting the dimension L of the spacing 103 between two adjacent cylindrical battery cells 101, the accommodation space 150 has sufficient space to accommodate the first connector 120, reducing the thickness of the battery pack in the longitudinal direction; and setting the spacing 103 according to the maximum width of the first connector 120 prevents the accommodation space 150 from being too large, enabling the internal space of the battery pack to be reasonably and effectively utilized and reducing the overall size of the battery pack.

[0053] Optionally, referring to Figure 3 , the battery pack further includes an insulating plate 160. The insulating plate 160 is disposed between the circuit assembly 110 and the battery cell group 100, and at least part of the insulating plate 160 is recessed towards the gap to form the accommodation space 150.

[0054] In the embodiment of the present application, by providing the insulating plate 160 between the battery cell group 100 and the circuit assembly 110, at least part of the insulating plate 160 is recessed towards the gap to form the accommodation space 150. On the basis of ensuring that the accommodation space 150 can have sufficient space to accommodate the first connector 120, the battery cell group 100 and the circuit assembly 110 can also be insulated from each other, providing a certain degree of protection for the battery cell group 100 to prevent the battery cell group 100 from being worn and leaking or getting an electric shock.

[0055] Specifically, in order to avoid the situation where the cylindrical battery cell 101 is damaged and internal substances leak or get an electric shock when the battery cell group 100 is in contact with the circuit assembly 110, the insulating plate 160 is provided between the battery cell group 100 and the circuit assembly 110. At least part of the insulating plate 160 is recessed towards the gap to form the accommodation space 150. It can be understood that the first connector 120 can be installed into the accommodation space 150. The recessed structure on the insulating plate 160 can be a groove 161 formed by a molding process. The groove 161 is adapted to the gap; the groove 161 can also be prepared by other process methods simultaneously during the manufacturing of the insulating plate 160, such as injection molding, etc. Those skilled in the art can select according to actual needs, and the embodiments of the present application do not limit this.

[0056] In some embodiments of the present application, referring to Figure 3 , the groove 161 of the insulating plate 160 can be set as a trapezoidal groove, so as to facilitate the installation of the first connector 120 and better fit the shape of the gap between adjacent cylindrical battery cells 101. Those skilled in the art can select the specific shape of the groove 161 of the insulating plate 160 according to actual needs, and the embodiments of the present application do not limit this.

[0057] In a specific application, the material of the insulating plate 160 can be selected from insulating materials such as plastics and rubbers, or composite materials can also be selected. For example, after a high-plasticity metal material is molded by pressing, spraying or other surface treatment processes are performed on the surface, so that the molded insulating plate has insulating properties. Of course, the insulating plate 160 can also be selected from other materials with insulating properties, and those skilled in the art can select according to actual needs, and the embodiments of the present application do not limit this.

[0058] Optionally, referring to Figure 1-Figure 3 , the battery pack further includes a second connector 130. The second connector 130 is disposed at one end of the circuit assembly 110 away from the first connector 120. The second connector 130 is electrically connected to the circuit assembly 110. The housing 140 is provided with a second opening 145, and the second opening 145 corresponds to the second connector 130.

[0059] Specifically, referring to Figure 1 , the first connector 120 of the battery pack is used to connect to an external charger to charge the battery pack, and the second connector 130 is used to connect to an external electrical device to supply power to the electrical device. The second connector 130 is disposed at one end of the circuit assembly 110 away from the first connector 120. The second connector 130 is electrically connected to the circuit assembly 110 and is exposed outside the housing through the second opening 145 provided on the housing, so as to realize connection with an external electrical device.

[0060] In a specific application, taking an external electrical device as an intelligent door lock as an example for illustration, the battery pack used by the intelligent door lock usually needs to be provided with multiple connection ports for charging and discharging connections. In order to make the best use of the internal space of the battery pack as much as possible, the second connector 130 is disposed at one end of the circuit assembly 110 away from the first connector 120, so as to facilitate the structural layout of the first connector 120 and the second connector 130 on the circuit assembly 110, thereby making full use of the internal space of the battery pack. The second opening 140 provided on the housing 140 corresponds to the second connector 130, so that the second connector 130 is exposed outside the housing 140 for connection with an external electrical device.

[0061] Optionally, referring to Figure 5 , a card slot 131 is provided on one side of the second connector 130 facing the circuit assembly 110, and at least part of the circuit assembly 110 is connected in the card slot 131.

[0062] Specifically, a card slot 131 is provided on one side of the second connector 130 facing the circuit component 110, and at least a part of the end of the circuit component 110 extends into the card slot 131. Compared with the direct stacking arrangement of the second connector 130 and the circuit component 110, inserting the end of the circuit component 110 into the card slot 131 can reduce the longitudinal mating height between the second connector 130 and the circuit component 110, thereby saving the internal space of the battery pack.

[0063] Among them, the card slot 131 can be a U-shaped groove or a counterbore provided in the second connector 130, and at least a part of the end of the circuit component 110 is embedded in the card slot 131. Of course, the specific structure of the card slot 131 can be flexibly set according to the type of the second connector 130 and the structure of the circuit component 110, and is not limited herein.

[0064] In a specific application, a plurality of pins are provided in the card slot 131 of the second connector 130. After inserting the pins into the pin holes on the circuit component 110, the corresponding pins of the second connector are soldered to the circuit component 110, thereby realizing electrical connection.

[0065] It should be noted that the soldering methods between the second connector 130 and the circuit component 110 can include soldering methods such as soft soldering, laser soldering, and ultrasonic soldering. Of course, other connection methods can also be used for the electrical connection between the second connector 130 and the circuit component 110, and those skilled in the art can select according to actual needs, and the embodiments of the present application do not limit this.

[0066] It can be understood that the circuit component 110 can include a printed circuit board (PCB). The PCB is electrically connected to the cylindrical battery cell, and electrical components can be provided in the PCB for controlling the charging and discharging of the cylindrical battery cell.

[0067] In the embodiments of the present application, by providing the second connector 130 at one end of the circuit component 110 facing away from the first connector 120, and the second connector 130 is electrically connected to the circuit component 110, thereby realizing power supply from the battery pack to an external electrical device; at the same time, a card slot 131 is provided on the side of the second connector 130 facing the circuit component 110, and at least a part of the circuit component 110 is connected in the card slot 131, so that the height of the second connector 130 in the longitudinal direction is small enough, thereby saving the internal space of the battery pack.

[0068] Optionally, the first connector 120 includes any one of a Type-C connector, an HDMI connector, and a USB connector; and / or, the second connector 130 includes any one of a blade connector, a circular connector, and a pluggable connector.

[0069] Specifically, the first connector 120 is used to connect an external charging device to charge the battery pack. The first connector 120 can be any one of a Type-C connector, an HDMI connector, and a USB connector.

[0070] Exemplarily, the first connector 120 is set as a Type-C connector. The Type-C connector can be divided into two main categories: a Type-C female socket and a Type-C male socket. The first connector 120 in the battery pack can be set as a Type-C female socket, and the Type-C male socket is provided on the external charging device. Through the cooperation of the Type-C female socket and the Type-C male socket, the external charging device can charge the battery pack through the Type-C connector.

[0071] Optionally, the first connector 120 is an HDMI connector. Exemplarily, the first connector 120 can be selected from: a standard Type-A connector, a Type-C connector, and a Type-D connector, so that the external charging device can charge the battery pack through the HDMI connector.

[0072] Optionally, the first connector 120 is a USB (Universal Serial Bu) connector. Exemplarily, the first connector 120 can be selected from USB Type-A, USB Type-B, and USB Type-C, etc., so that the external charging device can charge the battery pack through the USB connector.

[0073] Optionally, the second connector 130 is used to connect an external electrical device to supply power to the external electrical device. The second connector 130 can be any one of a blade connector, a circular connector, and a plug-and-play connector.

[0074] Of course, the first connector 120 can also be selected from other types of connectors as long as it can meet the connection requirements between the battery pack and the power source. Those skilled in the art can flexibly select according to actual needs and are not limited herein.

[0075] Specifically, the second connector 130 is a blade connector. One end of the second connector 130 usually has a terminal tab, and the external electrical device is provided with a flat female socket to match it, so that the battery pack can supply power to the external electrical device through the second connector 130.

[0076] Optionally, the second connector 130 is a circular connector, which has higher structural strength on the basis of enabling the battery pack to supply power to the external electrical device through the second connector 130.

[0077] Optionally, the second connector 130 is a plug-and-play connector. The plug-and-play connector supports a variety of connection methods and installation methods, has high flexibility, and is applicable to various application scenarios on the basis of enabling the battery pack to supply power to the external electrical device through the second connector 130.

[0078] Of course, the second connector 130 can also be selected from other types of connectors, as long as it can meet the connection requirements between the battery pack and the external electrical equipment. Those skilled in the art can flexibly select according to actual needs and are not limited herein.

[0079] In the embodiments of the present application, both the first connector 120 and the second connector 130 can be selected from any one of a variety of connectors. While meeting the charging and discharging requirements, the number of design options is increased, and the flexibility of the battery pack design is improved.

[0080] Optionally, referring to Figure 7 , the housing 140 includes a first side surface 148 and a second side surface 149 that are oppositely arranged. The first side surface 148 is a flat surface, and the second side surface 149 is an arc surface.

[0081] Specifically, taking the external electrical equipment as an intelligent door lock as an example, the housing 140 oppositely arranges the first side surface 148 and the second side surface 149 in the arrangement direction of the cylindrical battery cells 101, or oppositely arranges the first side surface 148 and the second side surface 149 in the direction perpendicular to the arrangement direction of the cylindrical battery cells 101. The first side surface 148 is set as a flat surface, and the second side surface 149 is set as an arc surface. Thus, when the battery pack is installed in the battery box of the intelligent door lock, the outer dimensions of the housing can be adapted to the inside of the battery box, reducing the operation of visual inspection by the installer and improving the installation efficiency.

[0082] Optionally, referring to Figure 7 , a positioning groove 146 is provided at one end of the housing 140 where the second opening 145 is provided. The positioning groove 146 is used for clamping with the external electrical equipment; and / or, a boss 147 is provided at one end of the housing 140 where the first opening 144 is provided.

[0083] Specifically, since the second connector 130 supplies power to the external electrical equipment, it is necessary to ensure the installation position of the second connector 130 first. The positioning groove 146 at one end of the housing 140 where the second opening 145 is provided is clamped with the external electrical equipment, thereby ensuring that the second connector 130 is stably connected to the external electrical equipment. At the same time, a matching structure is provided on the external electrical equipment, thereby further improving the stability after the battery pack is installed.

[0084] In addition, referring to Figure 8 , a boss 147 is provided at one end of the housing 140 where the first opening 144 is provided. The boss 147 can be arranged along the outer edge of the lower housing 142. In this way, when the installer installs the battery pack onto the external electrical equipment, the installer can directly touch the boss 147 with a finger, thereby determining the installation direction of the battery pack according to the shape of the boss 147, reducing the operation of visual inspection by the installer, and improving the installation efficiency of the battery pack.

[0085] Optionally, referring to Fig. 9 , the battery pack further includes a foam 170 and a handle 180. The foam 170 is disposed on a side of the circuit assembly 110 away from the insulating plate 160, and the handle 180 is disposed on a side of the lower housing 142 away from the accommodation cavity 143.

[0086] Specifically, referring to Fig. 9 , the foam 170, the circuit assembly 110, and the insulating plate 160 are stacked in sequence. The foam 170 covers the circuit assembly 110 and contacts the upper housing 141 to mitigate the impact of the upper housing 141 on the circuit board 110, thereby protecting the circuit board 110. The handle disposed on the side of the lower housing 142 away from the accommodation cavity 143 facilitates the installer to carry it.

[0087] In a specific application, referring to Fig. 9 , after assembling the battery cell group 100, apply an adhesive to parts of the insulating plate 160 perpendicular to the arrangement direction of the cylindrical battery cells 101 on both sides, and bond the insulating plate 160 to the battery cell group 100 according to a preset position; then bond the circuit assembly 110 equipped with the first connector 120 and the second connector 130 to the insulating plate 160. Finally, connect the conductive members 102 at the positive and negative electrodes of the battery cell group 100 to the respective corresponding connection parts of the circuit assembly 110, thereby forming a module, making the production process more concise, facilitating the installer to perform subsequent installation, and improving production efficiency.

[0088] In some embodiments of the present application, the battery pack further includes a warning light, a conductive member, etc., which are known to those of ordinary skill in the art and will not be described in detail here.

[0089] Optionally, an embodiment of the present application further provides an electrical device, including a device main body and the battery pack in any of the above embodiments, and the battery pack is used to supply power to the device main body.

[0090] In the embodiment of the present application, a housing is provided with a cavity 143 for accommodating a battery pack 100 and a circuit assembly 110. The battery pack 100 includes at least two cylindrical cells 101 arranged side by side, with a gap between adjacent cylindrical cells 101. The circuit assembly 110 is electrically connected to the cylindrical cells 101, and the gap between the circuit assembly 110 and the cylindrical cells 101 forms a housing space 150. A first connector 120 is disposed within the housing space 150 and electrically connected to the circuit assembly 110. The housing 140 is provided with a first opening 144 corresponding to the first connector 120. Thus, by arranging the first connector 120 within the housing space 150 formed by the circuit assembly 110 and the cylindrical cells 101, the internal structural space of the battery pack can be fully utilized, reducing the space occupied by the first connector 120, improving the utilization rate of the internal space of the battery pack, and thereby reducing the overall size of the battery pack. The device body can adjust the structural space for the connection between the device body and the battery pack based on the overall size of the battery pack, thereby more efficiently utilizing the space within the device body.

[0091] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0092] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized in that, include: A housing (140), a battery cell group (100), a circuit assembly (110), and a first connector (120); a housing (143) is provided in the housing (140), and the battery cell group (100) and the circuit assembly (110) are both provided in the housing (143); The battery cell group (100) comprises at least two cylindrical battery cells (101) arranged side by side, a gap exists between two adjacent cylindrical battery cells (101), the circuit assembly (110) at least partially covers the gap to form an accommodation space (150), the circuit assembly (110) is electrically connected to the cylindrical battery cells (101), the first connector (120) is arranged in the accommodation space (150) and is electrically connected to the circuit assembly (110); the housing (140) is provided with a first opening (144), and the first opening (144) corresponds to the first connector (120); The battery pack further includes an insulating plate (160), the insulating plate (160) being disposed between the circuit assembly (110) and the battery cell group (100), and the insulating plate (160) being at least partially recessed toward the gap to form the accommodating space (150); The battery pack further comprises a second connector (130), the second connector (130) being arranged at an end of the circuit assembly (110) facing away from the first connector (120), the second connector (130) being electrically connected to the circuit assembly (110); a card slot (131) is provided on a side of the second connector (130) facing the circuit assembly (110), and the circuit assembly (110) is at least partially connected in the card slot (131).

2. The battery pack according to claim 1, wherein Two adjacent cylindrical battery cells (101) are arranged at intervals.

3. The battery pack according to claim 2, characterized in that, Along the arrangement direction of at least two cylindrical battery cells (101), the spacing (103) between two adjacent cylindrical battery cells (101) is 4 mm to 6 mm.

4. The battery pack according to any one of claims 1-3, characterized in that, The housing (140) is provided with a second opening (145), and the second opening (145) corresponds to the second connector (130).

5. The battery pack according to claim 1, wherein The first connector (120) includes any one of a Type-C connector, an HDMI connector, and a USB connector; And / or, the second connector (130) includes any one of a blade connector, a circular connector, and a plug-in connector.

6. The battery pack according to claim 1, wherein, The shell (140) comprises a first side surface (148) and a second side surface (149) that are arranged opposite to each other, wherein the first side surface (148) is a plane, and the second side surface (149) is an arc surface.

7. The battery pack according to claim 6, characterized in that, The housing (140) is provided with a second opening (145) at one end thereof, and a positioning groove (146) is provided, wherein the positioning groove (146) is used for engaging with an external electrical device; And / or, the housing (140) is provided with a boss (147) at one end where the first opening (144) is provided.

8. An electrical device, characterized in that, It comprises a device body and a battery pack as described in any one of claims 1 to 7, wherein the battery pack is used to supply power to the device body.

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