Battery pack and electric device

Abstract

The application discloses a battery pack and an electric device. The battery pack comprises a shell, a top cover, a battery cell group, a battery management system and a connecting piece. The shell is internally provided with an accommodating cavity. The top cover is covered at the cavity opening of the accommodating cavity and is connected with the shell. The battery cell group and the battery management system are arranged in the accommodating cavity. The battery management system is arranged at the side of the battery cell group close to the top cover. The top cover is provided with a mounting hole. The connecting piece is arranged in the mounting hole. The first end of the connecting piece is electrically connected with the battery management system. The second end is exposed at the side of the top cover away from the accommodating cavity. The side of the top cover away from the battery management system is provided with a protective shell. The protective shell is provided with an accommodating channel. The second end is arranged in the accommodating channel and forms a plug connector with the protective shell. The plug connector is used for being plugged with a female connector outside. In the application, the plug connector is formed by the connecting piece and the protective shell. The structure of the connector in the battery pack can be simplified, and the space occupation can be reduced.

Description

Technical Field

[0001] This application belongs to the field of battery technology, specifically relating to a battery pack and electrical equipment. Background Technology

[0002] Battery packs need to perform functions such as charging, discharging, and communication. Therefore, connectors for these functions are usually required on the battery pack. At the same time, different connector mounting holes need to be provided on the outer shell of the battery pack to install different connectors.

[0003] The connectors in related technologies have connecting terminals set in an insulating base. During installation and use, the insulating base is connected and fixed to the circuit board by means of bolts, and then the connecting terminals are electrically connected to the battery panel using wires. At the same time, a sealing structure needs to be set on the outer shell to achieve a seal when the connector is connected to the female connector. However, the connectors in related technologies are not only structurally complex, but also occupy a lot of space within the battery pack. Utility Model Content

[0004] This application aims to provide a battery pack and electrical device that can solve the problem that connectors in related technologies are not only structurally complex, but also require a lot of space inside the battery pack.

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

[0006] In a first aspect, embodiments of this application propose a battery pack, including: a housing, a top cover, a cell pack, a battery management system, and a connector;

[0007] The housing has a receiving cavity with an opening. The top cover is sealed at the opening and connected to the housing. The battery cell assembly and the battery management system are both located in the receiving cavity. The battery management system is located on the side of the battery cell assembly closer to the top cover.

[0008] The top cover has a mounting hole, and the connector passes through the mounting hole. The connector includes a first end and a second end that are opposite to each other. The first end is electrically connected to the battery management system, and the second end is exposed on one side of the receiving cavity. The top cover has a protective shell on the side opposite to the battery management system. The protective shell has a receiving channel. The second end passes through the receiving channel and together with the protective shell forms a plug. The plug is used to connect with an external female connector.

[0009] Optionally, the connector includes a connector body and a terminal assembly;

[0010] The connector body passes through the mounting hole and is detachably connected to the top cover. The terminal assembly is embedded in the connector body. One end of the connector body extends toward the receiving cavity to form the first end. The terminal assembly is at least partially exposed at the first end and electrically connected to the battery management system. The other end of the connector body extends toward the side of the top cover away from the receiving cavity and passes through the receiving channel to form the second end. The terminal assembly is at least partially exposed at the second end for electrical connection to the female connector.

[0011] Optionally, the connector further includes a snap-fit ​​structure. The battery pack has a first direction, and the snap-fit ​​structure is disposed on both sides of the connector body along the first direction. One end of the snap-fit ​​structure is connected to the end of the connector body near the battery management system, and the other end of the snap-fit ​​structure extends away from the battery management system and has a gap with the connector body. The snap-fit ​​structure has a slot. The top cover has a protrusion, and the mounting hole has two first sidewalls arranged opposite to each other along the first direction. The protrusion is disposed on the first sidewall and snaps into the slot.

[0012] Optionally, the battery pack further has a second direction and a third direction, the second direction and the third direction being perpendicular to each other, the mounting hole having two second sidewalls arranged opposite to each other along the second direction; the second sidewalls are provided with guide grooves extending along the third direction, and the connector body is provided with guide bosses on both sides along the second direction, the guide bosses being guided and connected in the guide grooves;

[0013] And / or, the second sidewall is provided with a limiting platform at one end near the receiving channel, the limiting platform being adapted to abut against the end of the female connector.

[0014] Optionally, the terminal assembly includes a first terminal assembly and a second terminal assembly; both the first terminal assembly and the second terminal assembly are embedded in the connector body, and both the first terminal assembly and the second terminal assembly are electrically connected to the battery management system. The first terminal assembly is adapted to be electrically connected to the power supply port of the female connector, and the second terminal assembly is adapted to be electrically connected to the communication port of the female connector.

[0015] Optionally, the connector body has a mating portion at one end away from the battery management system, the mating portion having a first slot, and the first terminal assembly at least partially protruding from the slot wall of the first slot.

[0016] Optionally, the connector body has two mating portions, which are arranged at intervals. Each mating portion has a first terminal assembly, and a second slot is formed between the two mating portions.

[0017] The second terminal assembly includes a plurality of communication terminals, which are disposed in the connector body. One end of each communication terminal is electrically connected to the battery management system, and the other end of each communication terminal protrudes from the bottom of the second slot.

[0018] Optionally, the first terminal assembly includes a terminal body and a plurality of elastic conductive elements. The terminal body is embedded in the connector body and electrically connected to the battery management system. The battery pack has a first direction, and the first slot has two slot walls arranged opposite to each other along the first direction. The plurality of elastic conductive elements are disposed in the two slot walls, and the elastic conductive elements are electrically connected to the terminal body.

[0019] Optionally, the outer peripheral surface of the protective shell is provided with a locking platform, which is adapted to be locked and fixed with the female connector;

[0020] And / or, the protective shell and the top cover are integrally formed.

[0021] Secondly, embodiments of this application provide an electrical device, including: a female connector and the battery pack described in the first aspect, wherein the plug in the battery pack is inserted into the female connector.

[0022] In the embodiments of this application, by placing the cell assembly and battery management system within the housing cavity, and sealing the cavity opening with a top cover, the connector is inserted through the top cover. The first end of the connector extends into the housing cavity and forms an electrical connection with the battery management system, eliminating the need for additional wiring and reducing the space occupied inside the battery pack. Simultaneously, a protective shell is provided on the side of the top cover away from the housing cavity, allowing the second end of the connector to pass through it. The second end of the connector and the protective shell together form a plug, which is then used to connect to an external female connector. Thus, the protective shell on the top cover not only protects the connector but also serves as part of the battery pack connector, allowing direct connection to the female connector, thereby simplifying the connector structure within the battery pack. Furthermore, during battery pack use, the protective shell and the second end of the connector are inserted together into the female connector. This simplifies the structural complexity of the battery pack at the connector location, as only a seal is needed between the outer wall of the protective shell and the female connector, eliminating the need for a complex sealing structure within the top cover.

[0023] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments will be briefly introduced below, wherein:

[0025] Figure 1 This is a schematic diagram of a battery pack according to an embodiment of this application;

[0026] Figure 2 This is an exploded view of a battery pack according to an embodiment of this application;

[0027] Figure 3 This is a top view of a battery pack according to an embodiment of this application;

[0028] Figure 4 yes Figure 1 An enlarged view of part A, shown in the center circle;

[0029] Figure 5 This is a schematic diagram of the connection structure between the battery management system and the connector according to an embodiment of this application;

[0030] Figure 6 This is a schematic diagram of the structure of the connector according to an embodiment of this application;

[0031] Figure 7 This is a schematic diagram of a terminal assembly according to an embodiment of this application;

[0032] Figure 8 This is a schematic diagram of the top cover according to an embodiment of this application;

[0033] Figure 9 yes Figure 8 An enlarged view of section B, shown in the center circle;

[0034] Figure 10 This is a schematic diagram of the top cover according to an embodiment of the present application from another perspective;

[0035] Figure 11 This is a bottom view of the top cover according to an embodiment of this application;

[0036] Figure 12 This is a partial structural diagram of a protective cover provided in a battery pack according to an embodiment of this application;

[0037] Figure 13 This is a schematic diagram of the structure of the protective cover according to an embodiment of this application.

[0038] Figure label:

[0039] 1: Housing; 10: Connector; 11: Receiving cavity; 2: Top cover; 20: Mounting hole; 201: First side wall; 2011: Protrusion; 202: Second side wall; 2021: Guide groove; 2022: Limiting platform; 21: Protective shell; 210: Receiving channel; 211: Carding platform; 3: Cell pack; 4: Battery management system; 5: Connector; 5a: First end; 5b: Second end; 51: Connector body; 510: Interlocking part; 511: First slot; 512: Second slot; 513: Guide boss; 52: Snap-fit ​​structure; 521: Card slot; 53: Terminal assembly; 531: First terminal assembly; 5311: Terminal body; 5312: Elastic conductive element; 532: Second terminal assembly; 5321: Communication terminal; 6: Protective cover; X: First direction; Y: Second direction; Z: Third direction. Detailed Implementation

[0040] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0041] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0042] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "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 based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not 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 application.

[0043] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0044] The battery pack and electrical equipment provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0045] like Figures 1 to 5 As shown, a battery pack according to some embodiments of this application includes: a housing 1, a top cover 2, a cell assembly 3, a battery management system 4, and a connector 5; the housing 1 has a receiving cavity 11 with an opening, the top cover 2 is sealed at the opening and connected to the housing 1, the cell assembly 3 and the battery management system 4 are both disposed in the receiving cavity 11, and the battery management system 4 is disposed on the side of the cell assembly 3 near the top cover 2; the top cover 2 has a mounting hole 20, the connector 5 passes through the mounting hole 20, the connector 5 includes a first end 5a and a second end 5b disposed opposite to each other, the first end 5a is electrically connected to the battery management system 4, and the first end 5a is exposed on the side of the top cover 2 opposite to the battery management system 4; the side of the top cover 2 opposite to the battery management system 4 has a protective shell 21, the protective shell 21 has a receiving channel 210, the second end 5b passes through the receiving channel 210 and together with the protective shell 21 forms a plug 10, the plug 10 is used to plug into an external female connector.

[0046] In this embodiment, by placing the cell assembly 3 and the battery management system 4 within the receiving cavity 11 of the housing 1, and sealing the opening of the receiving cavity 11 with the top cover 2, the connector 5 is inserted through the top cover 2. The first end 5a of the connector 5 extends into the receiving cavity 11 and forms an electrical connection with the battery management system 4. This eliminates the need for additional wiring, thereby reducing the space occupied inside the battery pack. Simultaneously, a protective shell 21 is provided on the side of the top cover 2 facing away from the receiving cavity 11, allowing the second end 5b of the connector 5 to pass through the protective shell 21. The second end 5b of the connector 5 and the protective shell 21 together form a connector 10, which can be used to connect to an external female connector. Thus, the protective shell 21 on the top cover 2 not only protects the connector 5 but also serves as part of the battery pack connector 10, allowing direct connection to the female connector, thereby simplifying the structure of the connector 5 within the battery pack. Furthermore, when the battery pack is in use, the protective shell 21 and the connector 5 are inserted together into the female connector. This means that only a seal needs to be set between the outer surface of the protective shell 21 and the female connector, without the need to set a complex sealing structure in the top cover 2 for the connector 5, which can greatly simplify the structural complexity of the battery pack at the connector 5.

[0047] Specifically, the housing 1 has a receiving cavity 11, where the battery cell assembly 3 and the battery management system (BMS) 4 are both located. The battery cell assembly 3 includes multiple battery cells arranged within the receiving cavity 11. The battery management system 4 is located within the receiving cavity 11 near the cavity opening, and each battery cell is electrically connected to the battery management system 4. The battery management system 4 is primarily used to monitor, control, and protect the battery cell assembly 3, achieving efficient energy management and safe operation of the battery pack. A top cover 2 is provided at the cavity opening of the receiving cavity 11 to seal the opening. The top cover 2 is connected and fixed to the housing 1, and the connection methods between the top cover 2 and the housing 1 include, but are not limited to, bonding, welding, screw connection, and riveting.

[0048] A connector 5 is inserted into the top cover 2. The first end 5a of the connector 5 extends into the receiving cavity 11 and is electrically connected to the battery management system 4. The second end 5b of the connector 5 is exposed on the side of the top cover 2 away from the battery management system 4. Furthermore, a protective shell 21 is provided on the side of the top cover 2 away from the battery management system 4, so that the protective shell 21 surrounds the outer periphery of the second end 5b of the connector 5. There is a certain gap between the protective shell 21 and the connector 5, so that the protective shell 21 can protect the second end 5b of the connector 5. At the same time, the protective shell 21 and the second end 5b of the connector 5 can also form a connector 10. In use, the connector 10 is plugged into the female connector in the electrical device or charging device to realize the connection between the battery pack and the electrical device or charging device.

[0049] In some embodiments, the protective shell 21 and the top cover 2 can be configured as separate molding structures. This makes it easy to process the protective shell 21 and the top cover 2 separately, which facilitates actual processing operations. At the same time, when the protective shell 21 is damaged, it can be replaced separately, thereby reducing the cost of use.

[0050] In other embodiments, the protective shell 21 and the top cover 2 can be configured as an integrally formed structure. In this way, the top cover 2 with the protective shell 21 can be processed at the same time through a one-time processing method, which can reduce the processing steps. At the same time, it can also ensure the connection strength between the protective shell 21 and the top cover 2. In addition, there is no need to consider the problem of setting a sealing structure at the connection between the protective shell 21 and the top cover 2, thereby reducing the connection complexity between the protective shell 21 and the top cover 2.

[0051] It should be noted that the structure of the protective shell 21 can be adapted to the structure of the corresponding female connector, and can be flexibly configured according to actual usage requirements. No limitations are imposed here.

[0052] Optionally, such as Figures 4 to 6 As shown, the connector 5 includes a connector body 51 and a terminal assembly 53. The connector body 51 is inserted into the mounting hole 20 and is detachably connected to the top cover 2. The terminal assembly 53 is embedded in the connector body 51. One end of the connector body 51 extends toward the receiving cavity 11 to form a first end 5a. The terminal assembly 53 is at least partially exposed at the first end 5a and electrically connected to the battery management system 4. The other end of the connector body 51 extends toward the side of the top cover 2 away from the receiving cavity 11 and is inserted into the receiving channel 210 to form a second end 5b. The terminal assembly 53 is at least partially exposed at the second end 5b for electrical connection to the female connector.

[0053] In this embodiment, a connector body 51 is provided in the connector 5 to provide support and protection for the terminal assembly 53. The connector body 51 passes through the mounting hole 20 of the top cover 2, with one end of the connector body 51 extending into the receiving cavity 11 and the other end of the connector body 51 exposed outside the top cover 2. The terminal assembly 53 is then embedded in the connector body 51, with a portion of the terminal assembly 53 exposed at the end of the connector body 51 facing the battery management system 4, so that the terminal assembly 53 can form an electrical connection with the battery management system 4. This eliminates the need for additional wires and simplifies the connection structure. The other end of the connector body 51 passes through the receiving channel 210 of the protective shell 21, forming a plug structure with the protective shell 21 for insertion and mating with the female connector. A portion of the terminal assembly 53 is exposed at the other end of the connector body 51 to form an electrical connection with the female connector.

[0054] Furthermore, by making the connector body 51 detachably connected to the top cover 2, the assembly and disassembly of the connector 5 and the top cover 2 are facilitated. If the connector 5 malfunctions during use, it can be individually disassembled and replaced, thereby reducing usage costs. The detachable connection methods between the connector body 51 and the top cover 2 include, but are not limited to, plug-in, snap-fit, and pin connections. The specific detachable connection method can be flexibly set according to actual conditions and is not limited here.

[0055] Optionally, such as Figures 4 to 6 As shown, the connector 5 also includes a snap-fit ​​structure 52. The battery pack has a first direction X. The snap-fit ​​structure 52 is disposed on both sides of the connector body 51 along the first direction X. One end of the snap-fit ​​structure 52 is connected to the end of the connector body 51 near the battery management system 4, and the other end of the snap-fit ​​structure 52 extends in a direction away from the battery management system 4 and has a gap with the connector body 51. The snap-fit ​​structure 52 is provided with a slot 521. Figure 9 and Figure 10 As shown, the top cover 2 is provided with a protrusion 2011, and the mounting hole 20 has two first sidewalls 201 arranged opposite to each other along the first direction X. The protrusion 2011 is provided on the first sidewall 201 and is engaged in the slot 521.

[0056] In this embodiment, by providing snap-fit ​​structures 52 on both sides of the connector body 51 along the first direction X, one end of the snap-fit ​​structure 52 is connected to the end of the connector body 51 near the battery management system 4, and the other end of the snap-fit ​​structure 52 extends away from the battery management system 4 and has a gap with the connector body 51. A slot 521 is provided in the snap-fit ​​structure 52, and the slot 521 engages with the protrusion 2011 on the first sidewall 201 of the mounting hole 20, thus achieving the connection and fixation between the connector body 51 and the top cover 2. Simultaneously, because there is a gap between the other end of the snap-fit ​​structure 52 and the connector body 51, pressing the snap-fit ​​structure 52 can cause a certain deformation at the other end, facilitating the protrusion 2011 to disengage from the slot 521, thereby allowing the connector body 51 to be detached from the top cover 2. This achieves a detachable connection between the connector 5 and the top cover 2. This structure facilitates the assembly and disassembly of the connector 5 and the top cover 2, is simple in structure, and easy to operate.

[0057] Optionally, such as Figure 10 As shown, the battery pack also has a second direction Y and a third direction Z, with the first direction X, the second direction Y, and the third direction Z being perpendicular to each other. The mounting hole 20 has two second sidewalls 202 arranged opposite each other along the second direction Y; the second sidewalls 202 are provided with guide grooves 2021 extending along the third direction Z; as shown Figure 6As shown, the connector body 51 has guide bosses 513 on both sides along the second direction Y, and the guide bosses 513 are guided and connected in the guide groove 2021.

[0058] In this embodiment, guide grooves 2021 are provided on the two second sidewalls 202 along the second direction Y of the mounting hole 20, and guide bosses 513 are provided on both sides of the connector body 51 along the second direction Y. The guide bosses 513 are slidably connected in the guide grooves 2021 along the third direction Z. In this way, during the assembly of the connector 5 and the top cover 2, the guide bosses 513 are inserted into the guide grooves 2021. The guide grooves 2021 can guide and limit the guide bosses 513, thereby facilitating the accurate installation of the connector 5 and the top cover 2.

[0059] In some embodiments, such as Figure 9 As shown, a limiting platform 2022 is provided at one end of the second sidewall 202 near the receiving channel 210. The limiting platform 2022 is adapted to abut against the end of the female connector.

[0060] In this embodiment of the application, by setting a limiting platform 2022 at one end of the second sidewall 202 of the mounting hole 20 near the receiving channel 210, when the plug 10, which consists of the protective shell 21 and the second end 5b of the connector 5, is plugged into the female connector, a portion of the end of the female connector can extend into the receiving channel 210 and abut against the limiting platform 2022. Thus, the limiting platform 2022 can restrict the insertion position of the female connector and the plug 10, ensuring the insertion accuracy.

[0061] Optionally, such as Figure 4 , Figure 6 and Figure 7 As shown, the terminal assembly 53 includes a first terminal assembly 531 and a second terminal assembly 532; both the first terminal assembly 531 and the second terminal assembly 532 are embedded in the connector body 51, and both the first terminal assembly 531 and the second terminal assembly 532 are electrically connected to the battery management system 4. The first terminal assembly 531 is adapted to be electrically connected to the power supply port of the female connector, and the second terminal assembly 532 is adapted to be electrically connected to the communication port of the female connector.

[0062] In this embodiment, a first terminal assembly 531 and a second terminal assembly 532 are respectively embedded in the connector body 51. The first terminal assembly 531 can be electrically connected to the power supply port of the female connector, and the second terminal assembly 532 can be electrically connected to the communication port of the female connector. The first terminal assembly 531 enables current conduction between the battery pack and the female connector, and the second terminal assembly 532 enables communication between the battery pack and the female connector. In this way, charging, discharging, and communication functions of the battery pack can be realized with a single connector 5, which helps to simplify the structure of the battery pack, facilitates processing, and reduces production costs.

[0063] In some embodiments, the first terminal assembly 531, the second terminal assembly 532, and the connector body 51 can be integrally molded to improve the overall structural strength of the connector 5 and facilitate the assembly of the connector 5 with the top cover 2. The first terminal assembly 531 and the second terminal assembly 532 can be made of conductive material, while the connector body 51 can be made of insulating material. The connector body 51 can be formed by injection molding outside the first terminal assembly 531 and the second terminal assembly 532. The specific processing method and material selection can be flexibly set according to actual needs and are not limited here.

[0064] Optionally, such as Figures 4 to 6 As shown, the connector body 51 has a plug-in portion 510 at one end away from the battery management system 4. The plug-in portion 510 has a first slot 511, and the first terminal assembly 531 protrudes at least partially from the groove wall of the first slot 511.

[0065] In this embodiment, a mating portion 510 is provided at the end of the connector body 51 furthest from the battery management system 4, so that the mating portion 510 can be used to engage with the female connector. A first slot 511 is provided in the mating portion 510, and the first terminal assembly 531 protrudes at least partially from the groove wall of the first slot 511. Correspondingly, the female connector may have a connecting portion. When the mating portion 510 is mated with the female connector, the connecting portion of the female connector can be inserted into the first slot 511, and the connecting portion directly contacts the protruding first terminal assembly 531 in the first slot 511 to form an electrical connection. This structure facilitates both the connection of the female connector and the connector 5 and the processing and assembly of the connector 5.

[0066] Optionally, such as Figure 6 and Figure 7As shown, the connector body 51 has two mating parts 510, which are arranged at intervals. Each mating part 510 has a first terminal assembly 531, and a second slot 512 is formed between the two mating parts 510. The second terminal assembly 532 includes a plurality of communication terminals 5321, which are inserted into the connector body 51. One end of the communication terminal 5321 is electrically connected to the battery management system 4, and the other end of the communication terminal 5321 protrudes from the bottom of the second slot 512.

[0067] In this embodiment, two mating portions 510 are provided in the connector body 51, each with a first terminal assembly 531, forming the positive and negative connection terminals of the battery pack. A second slot 512 is provided between the two mating portions 510, through which multiple communication terminals 5321 protrude from the bottom of the second slot 512, facilitating connection between the communication terminals 5321 and the female connector. This connector structure satisfies the connection function while allowing for a more compact overall layout, reducing the space required in the battery pack and contributing to increased energy density.

[0068] Optionally, such as Figure 6 and Figure 7 As shown, the first terminal assembly 531 includes a terminal body 5311 and a plurality of elastic conductive elements 5312. The terminal body 5311 is embedded in the connector body 51 and electrically connected to the battery management system 4. The first slot 511 has two slot walls arranged opposite to each other along the first direction X. The plurality of elastic conductive elements 5312 are disposed in the two slot walls and are electrically connected to the terminal body 5311.

[0069] In this embodiment, the terminal body 5311 of the first terminal assembly 531 is embedded in the connector body 51 to achieve the connection and fixation between the first terminal assembly 531 and the connector body 51. Then, multiple elastic conductive elements 5312 are respectively provided in the two groove walls of the first slot 511 so that the elastic conductive elements 5312 are connected to the terminal body 5311. When the connecting part in the female connector is inserted into the first slot 511, the multiple elastic conductive elements 5312 can form a clamping and electrical connection effect on the connecting part, making the connection between the first terminal assembly 531 and the connecting part in the female connector more reliable. This is beneficial to reduce contact resistance and improve connection stability.

[0070] Optionally, the outer peripheral surface of the protective shell 21 is provided with a locking platform 211, which is adapted to be locked and fixed with the female connector.

[0071] In this embodiment, by providing a locking platform 211 on the outer peripheral surface of the protective shell 21, when the plug 10 formed by the protective shell 21 and the second end 5b of the connector 5 is inserted into the female connector, the locking platform 211 on the protective shell 21 can form a locking limit with the female connector, thereby improving the connection stability and firmness between the plug 10 and the female connector.

[0072] Understandably, the female connector may have a insertion slot so that the connector 10 can be inserted into the insertion slot to form an electrical connection between the connector 5 and the female connector. Furthermore, a retaining structure is provided on the side wall of the insertion slot. When the connector 10 is inserted into the insertion slot, the retaining plate 211 on the protective shell 21 can engage and fix it with the retaining structure, thereby preventing the connector 10 from coming out of the insertion slot and improving the connection firmness.

[0073] In some embodiments, such as Figure 12 and Figure 13 As shown, the battery pack may include a protective cover 6, which is located on the side of the top cover 2 where the protective shell 21 is located. The protective cover 6 covers the outer periphery of the protective shell 21 and is detachably connected to the protective shell 21. Therefore, during battery pack storage and transportation, the protective cover 6 can be placed around the outer periphery of the protective shell 21 to provide dust protection for the connector 5. When the battery pack needs to be installed and used, the protective cover 6 can be removed to expose the connector 10 formed by the connector 5 and the protective shell 21, so that the connector 10 can be connected to the female connector.

[0074] The structure of the protective cover 6 can be adapted to the structure of the protective shell 21, and can be flexibly set according to the actual structure of the battery pack, without limitation here.

[0075] Optionally, embodiments of this application also provide an electrical device, including a female connector and the battery pack in the above embodiments, wherein the connector in the battery pack is plugged into the female connector.

[0076] In this embodiment, by placing the cell assembly 3 and the battery management system 4 within the receiving cavity 11 of the housing 1, and sealing the opening of the receiving cavity 11 with the top cover 2, the connector 5 is inserted through the top cover 2. The first end 5a of the connector 5 extends into the receiving cavity 11 and forms an electrical connection with the battery management system 4. This eliminates the need for additional wiring, thereby reducing the space occupied inside the battery pack. Simultaneously, a protective shell 21 is provided on the side of the top cover 2 facing away from the receiving cavity 11, allowing the second end 5b of the connector 5 to pass through the protective shell 21. The second end 5b of the connector 5 and the protective shell 21 together form a connector 10, which can be used to connect to an external female connector. Thus, the protective shell 21 on the top cover 2 not only protects the connector 5 but also serves as part of the battery pack connector 10, allowing direct connection to the female connector, thereby simplifying the structure of the connector 5 within the battery pack. Furthermore, when the battery pack is in use, the protective shell 21 and the second end 5b of the connector 5 are inserted together into the female connector. This means that only a seal needs to be set between the outer wall of the protective shell 21 and the female connector, without the need to set a complex sealing structure in the top cover 2 for the connector 5, which can greatly simplify the structural complexity of the battery pack at the connector 5.

[0077] In some embodiments, electrical devices may include laptops, pen-based computers, mobile computers, e-book players, portable telephones, portable fax machines, portable copiers, portable printers, stereo headphones, video recorders, LCD TVs, portable cleaners, portable CD players, mini CDs, transceivers, electronic notebooks, calculators, memory cards, portable recorders, radios, backup power supplies, motors, automobiles, motorcycles, electric bicycles, bicycles, ships, spacecraft, lighting fixtures, toys, game consoles, clocks, power tools, flashlights, cameras, large household batteries, and lithium-ion capacitors, etc.

[0078] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0079] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized by, include: Housing (1), top cover (2), cell pack (3), battery management system (4), and connectors (5); The housing (1) is provided with a receiving cavity (11), the receiving cavity (11) has an opening, the top cover (2) is sealed at the opening and connected to the housing (1), the battery cell assembly (3) and the battery management system (4) are both located in the receiving cavity (11), and the battery management system (4) is located on the side of the battery cell assembly (3) near the top cover (2); The top cover (2) is provided with a mounting hole (20), and the connector (5) passes through the mounting hole (20). The connector (5) includes a first end (5a) and a second end (5b) disposed opposite to each other. The first end (5a) is electrically connected to the battery management system (4), and the second end (5b) is exposed on the side of the top cover (2) opposite to the receiving cavity (11). The top cover (2) is provided with a protective shell (21) on the side opposite to the battery management system (4). The protective shell (21) is provided with a receiving channel (210). The second end (5b) passes through the receiving channel (210) and together with the protective shell (21) forms a plug (10). The plug (10) is used to be plugged into an external female connector.

2. The battery pack of claim 1, wherein, The connector (5) includes a connector body (51) and a terminal assembly (53); The connector body (51) passes through the mounting hole (20) and is detachably connected to the top cover (2). The terminal assembly (53) is embedded in the connector body (51). One end of the connector body (51) extends toward the receiving cavity (11) to form the first end (5a). The terminal assembly (53) is at least partially exposed at the first end (5a) and electrically connected to the battery management system (4). The other end of the connector body (51) extends toward the top cover (2) away from the receiving cavity (11) and passes through the receiving channel (210) to form the second end (5b). The terminal assembly (53) is at least partially exposed at the second end (5b) for electrical connection with the female connector.

3. The battery pack of claim 2, wherein, The connector (5) further includes a snap-fit ​​structure (52), the battery pack has a first direction (X); the snap-fit ​​structure (52) is disposed on both sides of the connector body (51) along the first direction (X), one end of the snap-fit ​​structure (52) is connected to the end of the connector body (51) near the battery management system (4), the other end of the snap-fit ​​structure (52) extends away from the battery management system (4) and has a gap with the connector body (51), the snap-fit ​​structure (52) is provided with a slot (521); the top cover (2) is provided with a protrusion (2011), the mounting hole (20) has two first sidewalls (201) arranged opposite to each other along the first direction (X), the protrusion (2011) is disposed on the first sidewall (201), and the protrusion (2011) is snapped into the slot (521).

4. The battery pack according to claim 2, characterized in that, The battery pack also has a second direction (Y) and a third direction (Z), which are perpendicular to each other. The mounting hole (20) has two second sidewalls (202) arranged opposite to each other along the second direction (Y). The second sidewalls (202) are provided with guide grooves (2021) extending along the third direction (Z). The connector body (51) is provided with guide bosses (513) on both sides along the second direction (Y). The guide bosses (513) are guided and connected in the guide grooves (2021). And / or, the second sidewall (202) is further provided with a limiting platform (2022) near one end of the receiving channel (210), the limiting platform (2022) being adapted to abut against the end of the female connector.

5. The battery pack of claim 2, wherein, The terminal assembly (53) includes a first terminal assembly (531) and a second terminal assembly (532); the first terminal assembly (531) and the second terminal assembly (532) are both embedded in the connector body (51), and the first terminal assembly (531) and the second terminal assembly (532) are both electrically connected to the battery management system (4). The first terminal assembly (531) is adapted to be electrically connected to the power supply port of the female connector, and the second terminal assembly (532) is adapted to be electrically connected to the communication port of the female connector.

6. The battery pack of claim 5, wherein, The connector body (51) has a plug-in portion (510) at one end away from the battery management system (4), and the plug-in portion (510) has a first slot (511), and the first terminal assembly (531) protrudes at least partially from the groove wall of the first slot (511).

7. The battery pack of claim 6, wherein, The connector body (51) is provided with two mating parts (510), the two mating parts (510) are arranged at intervals, each mating part (510) is provided with a first terminal assembly (531), and a second slot (512) is formed between the two mating parts (510). The second terminal assembly (532) includes a plurality of communication terminals (5321), which are inserted into the connector body (51). One end of the communication terminal (5321) is electrically connected to the battery management system (4), and the other end of the communication terminal (5321) protrudes from the bottom of the second slot (512).

8. The battery pack of claim 6, wherein, The first terminal assembly (531) includes a terminal body (5311) and a plurality of elastic conductive elements (5312). The terminal body (5311) is embedded in the connector body (51) and electrically connected to the battery management system (4). The battery pack has a first direction (X). The first slot (511) has two slot walls arranged opposite to each other along the first direction (X). The plurality of elastic conductive elements (5312) are disposed in the two slot walls. The elastic conductive elements (5312) are electrically connected to the terminal body (5311).

9. The battery pack of any one of claims 1-8, wherein, The outer peripheral surface of the protective shell (21) is provided with a locking platform (211), which is adapted to be locked and fixed with the female connector; And / or, the protective shell (21) and the top cover (2) are integrally formed.

10. An electric device, characterized by include: The female connector and the battery pack as described in any one of claims 1-9, wherein the connector in the battery pack is inserted into the female connector.

Images