Battery pack and electric device

Abstract

The utility model relates to a battery pack and an electric device. The battery pack comprises a box body, a battery monomer and a buffer piece, a wire harness is arranged in the box body; the battery monomers are positioned in the box body; and the buffer part is positioned between the inner wall of the box body and the battery monomers, wraps the wire harness, and is arranged on the inner wall of the box body so as to fix the wire harness on the inner wall of the box body. In the assembling process of the battery pack, the buffering piece wraps the wire harness, so that the buffering piece can protect the wire harness, and the probability that the wire harness is scratched by metal chips or disintegrating slag generated in the assembling process is reduced. In addition, the buffer parts are located between the edge beams of the box body and the battery monomers, so that the buffer parts can play a role in buffering, the probability that the battery monomers are in direct contact with the edge beams when expanding is reduced, and the battery monomers can be protected. In addition, the buffering piece has the buffering function and the wire harness fixing function at the same time, the number of parts needed in the assembling process can be reduced, and the weight of the battery pack is reduced.

Description

Technical Field

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

[0002] Various electronic components inside the battery pack are usually electrically connected using wire harnesses. Currently, holes are generally drilled in the side beams of the box body for wire routing and fixing the wire harnesses. Since a large number of burrs are generated at the holes, which are likely to scratch the wire harnesses, protective parts are also used to protect the wire harnesses. This results in the need to install more parts inside the box body, making the internal structure of the box body more complex and increasing the assembly difficulty of the battery pack. Summary of the Utility Model

[0003] In view of the above problems, this application provides a battery pack and an electrical device, which can install and protect the wire harness, thereby reducing the number of parts to be installed inside the box body and improving the problem of high assembly difficulty of the battery pack.

[0004] In a first aspect, this application provides a battery pack, which includes a box body, battery cells, and a buffer member. A wire harness is provided inside the box body; the battery cells are located inside the box body; the buffer member is located between the inner wall of the box body and the battery cells, the buffer member wraps around the outside of the wire harness, and the buffer member is provided on the inner wall of the box body to fix the wire harness to the inner wall of the box body.

[0005] In the technical solution of the embodiments of this application, during the assembly process of the battery pack, since the buffer member wraps around the outside of the wire harness, the buffer member can protect the wire harness and reduce the probability of the wire harness being scratched by metal chips or debris generated during the assembly process. Additionally, since the buffer member is located between the side beam of the box body and the battery cells, the buffer member can play a buffering role to reduce the probability of the battery cells directly contacting the side beam when the battery cells expand, and can protect the battery cells. Furthermore, compared with separately providing a fixing member for fixing the wire harness and a component for realizing buffering, the above buffer member simultaneously has a buffering function and a function of fixing the wire harness, which can reduce the components to be used during the assembly process and reduce the weight of the battery pack.

[0006] In some embodiments, the buffer member further includes a main body, the main body is connected to the box body, and the main body is provided with a plurality of accommodating portions, and each accommodating portion accommodates a different wire harness.

[0007] When assembling the battery pack, different wire harnesses can route through the corresponding accommodating portions, increasing the number of wire harnesses that the buffer member can install and expanding the range of wire harnesses that the buffer member can install and protect. Since the accommodating portions are installed on the box body through the main body, when the main body is damaged during the assembly process, the wire harnesses are still wrapped by the accommodating portions, which can reduce the probability of the wire harnesses being exposed to the outside and scratched by debris.

[0008] In some embodiments, all the accommodating portions are spaced apart along a first direction. The main body is further provided with a plurality of first installation channels, and the first installation channels correspond to the accommodating portions one by one. Along the first direction, the first installation channels communicate the inside and outside of the corresponding accommodating portions, and the first direction intersects the routing direction of the wire harness.

[0009] By providing the first installation channels on the main body, the structure of the first installation channels is simplified, the manufacturing difficulty of the first installation channels is reduced, and it is also convenient for assembling the wire harness, reducing the assembly difficulty of the wire harness.

[0010] In some embodiments, along the first direction, the main body includes two opposite end portions. One of the end portions is provided with a first installation channel, and a second installation channel is provided between two adjacent accommodating portions. Two adjacent accommodating portions are communicated through a second installation channel.

[0011] Compared with providing a plurality of first installation channels directly communicating with the outside, only one first installation channel communicating with the outside is provided in the whole buffer member for the wire harness to pass through and be installed. On the basis of not affecting the use effect of the buffer member, the overall strength of the buffer member is improved.

[0012] In some embodiments, the main body includes an elastic member, and the elastic member is provided with a first installation channel. The elastic member can generate elastic deformation so that the first installation channel can be switched between an open state and a closed state.

[0013] With such a setting, the installation method of the wire harness is simplified, the fixing effect of the buffer member on the wire harness is improved, and the residue in the box can be blocked, reducing the probability that the residue enters the accommodating portion through the first installation channel and scratches the wire harness.

[0014] In some embodiments, the buffer member further includes a first strengthening portion, and the first strengthening portion is located between two adjacent accommodating portions. At least part of the first strengthening portion is provided with at least part of the first installation channel.

[0015] When the buffer member is subjected to an external force impact, the first strengthening portion can buffer part of the external force, thereby improving the overall strength of the buffer member.

[0016] In some embodiments, a card slot is provided in the main body, and the card slot is configured to be an accommodating portion.

[0017] In this way, the structure of the buffer member is simplified, and the manufacturing difficulty of the buffer member is reduced.

[0018] In some embodiments, the buffer member further includes a second strengthening portion, and the second strengthening portion is provided on the outer wall of the main body.

[0019] When the buffer member is subjected to an external force impact, the second strengthening portion can withstand a certain external force impact to improve the impact resistance of the buffer member and improve the overall strength of the buffer member.

[0020] In some embodiments, the second reinforcing portion is located on the surface of the main body facing the battery cell. The second reinforcing portion protrudes relative to the main body and forms a groove between the second reinforcing portion and the main body.

[0021] Since the surface of the buffer member facing the battery cell is formed with a groove, the contact area between the buffer member and the battery cell can be reduced, thereby reducing the impact on the battery cell when the buffer member is subjected to an external force impact without affecting the effect of the second reinforcing portion.

[0022] In some embodiments, the main body and the accommodating portion are integrally formed.

[0023] In this way, the connection stability between the components of the buffer member can be improved, and the preparation speed of the buffer member can be increased.

[0024] In some embodiments, in the width direction of the buffer member, there is a first distance between the inner wall of the box body and the battery cell, and the first distance is smaller than the width of the buffer member.

[0025] When the buffer member is subjected to an external force impact, since the buffer member is clamped between the box body and the battery cell, the probability of the buffer member moving can be reduced, the installation stability of the buffer member can be improved, and further the installation stability of the wire harness assembled in the buffer member can be improved.

[0026] In a second aspect, the present application provides an electrical device, which includes the battery in the above embodiments, and the battery is used to provide electrical energy.

[0027] During the assembly process of the battery pack of the electrical device, since the buffer member wraps around the outside of the wire harness, the buffer member can protect the wire harness and reduce the probability of the wire harness being scratched by metal chips or debris generated during the assembly process. In addition, since the buffer member is located between the side beam of the box body and the battery cell, the buffer member can play a buffering role to reduce the probability of the battery cell directly contacting the side beam when the battery cell expands, and can protect the battery cell. Furthermore, compared with separately providing a fixing member for fixing the wire harness and a component for realizing buffering, the above buffer member simultaneously has a buffering function and a function of fixing the wire harness, which can reduce the components required during the assembly process and reduce the weight of the battery pack.

[0028] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the following specifically illustrates the specific embodiments of the present application. Description of the Drawings

[0029] Upon reading the following detailed description of the preferred embodiments, various other advantages and benefits will become apparent to those of ordinary skill in the art. The drawings are only for the purpose of illustrating the preferred embodiments and are not considered to be a limitation of the present application. Also, in all the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0030] Figure 1 is a schematic structural diagram of an electrical device according to one or more embodiments.

[0031] Figure 2 is an exploded view of a battery pack according to one or more embodiments.

[0032] Figure 3 is a schematic exploded structural diagram of a battery cell according to one or more embodiments.

[0033] Figure 4 is a schematic structural diagram of a battery pack with some structures hidden according to one or more embodiments.

[0034] Figure 5 is a cross-sectional view of a battery pack according to one or more embodiments.

[0035] Figure 6 is a schematic structural diagram of a buffer member of a battery pack according to one or more embodiments.

[0036] The reference numerals in the specific embodiments are as follows:

[0037] 1000, vehicle;

[0038] 100, battery pack; 200, controller; 300, motor;

[0039] 10, box body; 11, first part; 12, second part;

[0040] 20, battery cell; 21, end cap; 21a, electrode terminal; 22, housing; 23, electrode assembly;

[0041] 30, buffer member; 31, main body; 311, first installation channel; 312, second installation channel; 32, accommodating part; 33, first strengthening part; 34, second strengthening part; X, first direction; Y, second direction. Specific Embodiments

[0042] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0044] In the description of the embodiments of this application, if technical terms such as "first" and "second" appear, they are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, "a plurality of" means more than two, unless otherwise specifically defined.

[0045] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appearing in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0046] In the description of the embodiments of this application, if the term "and / or" appears, it is only a relationship describing the association of associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, if it appears, the character " / " in this text generally represents an "or" relationship between the associated objects before and after.

[0047] In the description of the embodiments of this application, if it appears, the term "a plurality of" refers to more than two (including two). Similarly, "a plurality of groups" refers to more than two groups (including two groups), and "a plurality of pieces" refers to more than two pieces (including two pieces).

[0048] In the description of the embodiments of this application, if it appears, the orientation or positional relationship indicated by technical terms such as "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 the embodiments of this application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of this application.

[0049] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, if the technical terms "installation", "connection", "connection", "fixation", etc. appear, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can also be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0050] Currently, from the perspective of the development of the market situation, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric vehicles, as well as in multiple fields such as military equipment and aerospace. With the continuous expansion of the application fields of power batteries, the market demand for them is also constantly increasing.

[0051] The wiring harness in the battery pack is generally installed and routed by opening holes in the side beam. The holes in the side beam generally generate metal chips, and since the wiring harness is in a bare state, the wiring harness is easily scratched by the metal chips.

[0052] In order to improve the problem that the wiring harness after installation is easily scratched due to being exposed in the battery pack, the embodiments of the present application provide a battery pack. The battery pack uses a buffer member to wrap the wiring harness and installs the wiring harness, which can prevent the wiring harness from being directly exposed in the battery pack and reduce the probability of the wiring harness being scratched by the metal chips in the battery pack.

[0053] The battery cells disclosed in the embodiments of the present application can be but are not limited to being used in electrical devices such as vehicles, ships, or aircraft. The power supply system of the electrical device can be composed of the battery cells and batteries disclosed in the present application.

[0054] The embodiments of the present application provide an electrical device using a battery as a power source. The electrical device can be but is not limited to mobile phones, tablets, laptop computers, electric toys, electric tools, battery cars, electric vehicles, ships, spacecraft, etc. Among them, the electric toys can include fixed or mobile electric toys, such as game consoles, electric vehicle toys, electric ship toys, and electric aircraft toys, etc., and the spacecraft can include airplanes, rockets, space shuttles, and spaceships, etc.

[0055] For the convenience of description in the following embodiments, a vehicle 1000, which is an electrical device in an embodiment of the present application, is taken as an example for description.

[0056] Please refer to Figure 1 , Figure 1Schematic structural diagram of vehicle 1000 provided by some embodiments of the present application. Vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery pack 100 is disposed inside vehicle 1000. The battery pack 100 can be disposed at the bottom, head or tail of vehicle 1000. The battery pack 100 can be used for power supply of vehicle 1000. For example, the battery pack 100 can be used as the operating power source of vehicle 1000. Vehicle 1000 may further include a controller 200 and a motor 300. The controller 200 is used to control the battery pack 100 to supply power to the motor 300. For example, it is used for the working power requirements during the start, navigation and driving of vehicle 1000.

[0057] In some embodiments of the present application, the battery pack 100 can not only be used as the operating power source of vehicle 1000, but also as the driving power source of vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for vehicle 1000.

[0058] Please refer to Figure 2 , Figure 2 Explosion diagram of battery pack 100 provided by some embodiments of the present application. The battery pack 100 includes a box body 10 and battery cells 20. The battery cells 20 are accommodated in the box body 10. Among them, the box body 10 is used to provide an accommodation space for the battery cells 20, and the box body 10 can adopt various structures. In some embodiments, the box body 10 may include a first part 11 and a second part 12. The first part 11 and the second part 12 cover each other, and the first part 11 and the second part 12 jointly define an accommodation space for accommodating the battery cells 20. The second part 12 can be a hollow structure with one end open, and the first part 11 can be a plate-like structure. The first part 11 covers the open side of the second part 12 so that the first part 11 and the second part 12 jointly define an accommodation space; the first part 11 and the second part 12 can also both be hollow structures with one side open, and the open side of the first part 11 covers the open side of the second part 12. Of course, the box body 10 formed by the first part 11 and the second part 12 can be of various shapes, such as a cylinder, a cuboid, etc.

[0059] In the battery pack 100, there may be multiple battery cells 20. The multiple battery cells 20 can be connected in series, parallel, or in a combined series-parallel connection. A combined series-parallel connection means that there are both series and parallel connections among the multiple battery cells 20. The multiple battery cells 20 can be directly connected in series, parallel, or in a combined series-parallel connection together, and then the whole formed by the multiple battery cells 20 is accommodated in the box body 10. Of course, the battery pack 100 can also be such that multiple battery cells 20 are first connected in series, parallel, or in a combined series-parallel connection to form a battery module, and then multiple battery modules are connected in series, parallel, or in a combined series-parallel connection to form a whole and are accommodated in the box body 10. The battery pack 100 can also include other structures. For example, the battery pack 100 can also include a busbar component for realizing the electrical connection among the multiple battery cells 20.

[0060] Among them, each battery cell 20 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 20 can be in the shape of a cylinder, a flat body, a cuboid, or other shapes, etc.

[0061] Please refer to Figure 3 , Figure 3 which is a schematic exploded view of the battery cell 20 provided in some embodiments of the present application. A battery cell 20 refers to the smallest unit that makes up a battery. As Figure 3 shown, the battery cell 20 includes an end cap 21, a housing 22, an electrode assembly 23, and other functional components.

[0062] The end cap 21 refers to a component that covers the opening of the housing 22 to isolate the internal environment of the battery cell 20 from the external environment. Without limitation, the shape of the end cap 21 can be adapted to the shape of the housing 22 to cooperate with the housing 22. Optionally, the end cap 21 can be made of a material with a certain hardness and strength (such as aluminum alloy). In this way, the end cap 21 is not easily deformed when subjected to extrusion and collision, enabling the battery cell 20 to have higher structural strength and the safety performance can also be improved. Functional components such as electrode terminals 21a can be provided on the end cap 21. The electrode terminals 21a can be used for electrically connecting with the electrode assembly 23 to output or input the electrical energy of the battery cell 20. In some embodiments, a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold can also be provided on the end cap 21. The material of the end cap 21 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. The embodiments of the present application do not make special limitations thereto. In some embodiments, an insulating member can also be provided on the inner side of the end cap 21. The insulating member can be used to isolate the electrical connection components in the housing 22 from the end cap 21 to reduce the risk of short circuit. Exemplarily, the insulating member can be plastic, rubber, etc.

[0063] The housing 22 is a component for cooperating with the end cap 21 to form the internal environment of the battery cell 20. Among them, the formed internal environment can be used to accommodate the electrode assembly 23, the electrolyte, and other components. The housing 22 and the end cap 21 can be independent components. An opening can be provided on the housing 22, and the end cap 21 is covered at the opening to form the internal environment of the battery cell 20. Without limitation, the end cap 21 and the housing 22 can also be integrated. Specifically, the end cap 21 and the housing 22 can first form a common connection surface before other components are put into the housing. When it is necessary to encapsulate the interior of the housing 22, the end cap 21 is then covered on the housing 22. The housing 22 can be of various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 22 can be determined according to the specific shape and size of the electrode assembly 23. The material of the housing 22 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. The embodiments of the present application do not make special restrictions on this.

[0064] The electrode assembly 23 is a component in the battery cell 20 where an electrochemical reaction occurs. The housing 22 can contain one or more electrode assemblies 23. The electrode assembly 23 is mainly formed by winding or laminating a positive electrode sheet and a negative electrode sheet, and a separator is usually provided between the positive electrode sheet and the negative electrode sheet. The parts of the positive electrode sheet and the negative electrode sheet with active substances constitute the main body of the electrode assembly, and the parts of the positive electrode sheet and the negative electrode sheet without active substances respectively constitute the electrode tabs. The positive electrode tab and the negative electrode tab can be located at one end of the main body together or at both ends of the main body respectively. During the charge and discharge process of the battery, the positive electrode active substance and the negative electrode active substance react with the electrolyte, and the electrode tabs are connected to the electrode terminals to form a current loop.

[0065] As Figure 4 and Figure 5 As shown, some embodiments of the present application provide a battery pack 100. The battery pack 100 includes a box body 10, a battery cell 20, and a buffer member 30. A wiring harness is provided inside the box body 10, and the battery cell 20 is located inside the box body 10; the buffer member 30 is located between the inner wall of the box body 10 and the battery cell 20. The buffer member 30 wraps around the outside of the wiring harness, and the buffer member 30 is provided on the inner wall of the box body 10 to fix the wiring harness to the inner wall of the box body 10.

[0066] A water-cooling plate is also installed inside the box body 10. The wiring harness can electrically connect the battery cell 20 to the water-cooling plate, or electrically connect two components that need to be electrically connected inside the box body 10. The buffer member 30 can be provided on the inner wall of the box body 10 in a manner that can be but is not limited to clamping or bonding.

[0067] Exemplarily, during the assembly process of the battery pack 100, the battery cells 20 are generally pre-positioned using the side beams of the housing 10. The wiring harness is located between the side beam and the battery cells 20, and a buffer member 30 is also wrapped around the outside of the wiring harness, that is, the routing direction of the wiring harness is the same as the extending direction of the buffer member 30. Among them, the buffer member 30 can be connected to the side beam to fix the wiring harness to the side beam. Of course, the side of the buffer member 30 facing away from the side beam can also be in contact with the battery cells 20.

[0068] In this way, during the assembly process of the battery pack 100, since the buffer member 30 is wrapped around the outside of the wiring harness, the buffer member 30 can protect the wiring harness and reduce the probability of the wiring harness being scratched by metal chips or debris generated during the assembly process. Coupled with the fact that the buffer member 30 is located between the side beam of the housing 10 and the battery cells 20, therefore, the buffer member 30 can play a buffering role to reduce the probability of the battery cells 20 coming into direct contact with the side beam when the battery cells 20 expand, and can protect the battery cells 20. In addition, compared with separately setting a fixing member for fixing the wiring harness and a component for buffering, the above buffer member 30 has both a buffering function and a function of fixing the wiring harness, which can reduce the components required during the assembly process and reduce the weight of the battery pack 100.

[0069] Please refer to Figure 6 , in some embodiments, the buffer member 30 further includes a main body 31, the main body 31 is connected to the housing 10, and the main body 31 is provided with a plurality of receiving portions 32, and each receiving portion 32 respectively receives different wiring harnesses.

[0070] The main body 31 is used to mount the receiving portions 32 on the housing 10, and the connection manner between the main body 31 and the side beam can be but is not limited to bonding and snap connection. The plurality of receiving portions 32 can be spaced apart on the main body 31, or all the receiving portions 32 are connected to form a whole and connected to the main body 31. The connection manner between the main body 31 and the receiving portions 32 can be but is not limited to detachable connection manners such as bonding.

[0071] When assembling the battery pack 100, different wiring harnesses can route through the corresponding receiving portions 32, increasing the number of wiring harnesses that the buffer member 30 can install and expanding the range of wiring harnesses that the buffer member 30 can install and protect. Since the receiving portions 32 are mounted on the housing 10 through the main body 31, when the main body 31 is damaged during the assembly process, the wiring harness is still wrapped by the receiving portions 32, which can reduce the probability of the wiring harness being exposed to the outside and scratched by debris.

[0072] Please continue to refer to Figure 6 , in some embodiments, all the receiving portions 32 are spaced apart along the first direction X, the main body 31 is further provided with a plurality of first installation channels 311, the first installation channels 311 correspond to the receiving portions 32 one by one, along the first direction X, the first installation channels 311 communicate the inside and outside of the corresponding receiving portions 32, and the first direction X intersects with the routing direction of the wiring harness.

[0073] The first installation channel 311 can be a slit formed on the main body 31 by clamping. The number of the first installation channels 311 is equal to the number of the accommodating parts 32, and one accommodating part 32 is correspondingly provided with one first installation channel 311. In different embodiments, the opening directions of the first installation channels 311 can be different.

[0074] In one embodiment, the opening directions of the first installation channels 311 are the same and all intersect the first direction X. In another embodiment, the first installation channels 311 located between two adjacent accommodating parts 32 can communicate with the two adjacent accommodating parts 32. In still another embodiment, the opening directions of the first installation channels 311 communicating with different accommodating parts 32 are all different.

[0075] Exemplarily, the buffer 30 includes two accommodating parts 32 and two first installation channels 311 that are spaced apart along the first direction X. Each accommodating part 32 is connected and communicated with a first installation channel 311, and the opening directions of all the first installation channels 311 are the same. When installing the wire harness, each wire harness is inserted into the corresponding accommodating part 32 via the corresponding first installation channel 311.

[0076] In summary, by providing the first installation channels 311 on the main body 31, the structure of the first installation channels 311 is simplified, the manufacturing difficulty of the first installation channels 311 is reduced, and it is also convenient for assembling the wire harness, thereby reducing the assembly difficulty of the wire harness.

[0077] As Figure 6 shown, in some embodiments, along the first direction X, the main body 31 includes two opposite end parts, and a first installation channel 311 is provided in one of the end parts. A second installation channel 312 is provided between two adjacent accommodating parts 32, and two adjacent accommodating parts 32 are communicated through a second installation channel 312.

[0078] Exemplarily, the buffer 30 includes two accommodating parts 32, a first installation channel 311 and a second installation channel 312 that are spaced apart along the first direction X. The second installation channel 312 located between two adjacent accommodating parts 32 can communicate with the two accommodating parts 32, and the first installation channel 311 is communicated with one of the accommodating parts 32. Moreover, the opening directions of the first installation channel 311 and the second installation channel 312 can be consistent with the first direction X.

[0079] When installing the wire harness, one wire harness can first enter one of the accommodating parts 32 via the first installation channel 311, and then enter the other accommodating part 32 via the second installation channel 312. Another wire harness can enter the accommodating part 32 via the first installation channel 311. In this way, the installation of the two wire harnesses is completed.

[0080] Compared with opening multiple first installation channels 311 directly connected to the outside, the entire buffer 30 only opens one first installation channel 311 connected to the outside for the wiring harness to pass through for installation, thereby improving the overall strength of the buffer 30 without affecting the use effect of the buffer 30.

[0081] In some embodiments, the main body 31 includes an elastic member (not shown in the figure), the elastic member defines a first installation channel 311 , and the elastic member can generate elastic deformation to enable the first installation channel 311 to switch between an open state and a closed state.

[0082] When the user acts on the first installation channel 311 of the elastic member (such as prying the elastic member apart), the wire harness can enter the accommodating portion 32 through the first installation channel 311. When the external force is removed, the elastic member returns to its original position under the action of the elastic restoring force, that is, the first installation channel 311 switches from the open state to the closed state. At this time, the wire harness cannot enter the accommodating portion 32 through the first installation channel 311, and the wire harness located in the accommodating portion 32 is also blocked and positioned in the accommodating portion 32.

[0083] Such an arrangement simplifies the installation method of the wiring harness, improves the fixing effect of the buffer 30 on the wiring harness, and can block the residue in the box 10, reducing the probability of the residue entering the accommodating portion 32 through the first installation channel 311 and scratching the wiring harness.

[0084] In some embodiments, the main body 31 is also made of elastic material. The main body 31 and the elastic member are made of the same material, which can simplify the preparation process of the main body 31.

[0085] like Figure 6 As shown, in some embodiments, the buffer member 30 further includes a first reinforcement portion 33 , the first reinforcement portion 33 is located between two adjacent accommodating portions 32 , and at least a portion of the first reinforcement portion 33 is provided with at least a portion of the first installation channel 311 .

[0086] The first reinforcement portion 33 may extend along the second direction Y, and the second direction Y is consistent with the routing direction of the wire harness. When there are multiple first reinforcement portions 33 , all first reinforcement portions 33 may selectively open the first installation channel 311 .

[0087] like Figure 6 As shown, in one example, all first reinforcement parts 33 are provided with first installation channels 311, and two adjacent accommodating cavities are connected through the first installation channels 311 on the corresponding first reinforcement parts 33. When installing the wiring harness, part of the wiring harness needs to pass through the first installation channels 311 on the first reinforcement part 33 to enter the corresponding accommodating cavity.

[0088] In another example, a part of the first reinforcing portion 33 is provided with a first installation channel 311, and the other part of the first reinforcing portion 33 is not provided with the first installation channel 311. For the accommodating portions 32 corresponding to the first reinforcing portions 33 without the first installation channel 311, the first installation channels 311 of these accommodating portions 32 can be located at the remaining parts of the main body 31. The wire harness can directly enter the corresponding accommodating portion 32 through the first installation channel 311. For the first reinforcing portions 33 provided with the first installation channel 311, the wire harness can first pass through the remaining first installation channels 311, and then enter the corresponding accommodating portion 32 through the installation on the first reinforcing portion 33.

[0089] In this way, when the buffer member 30 is subjected to an external force impact, the first reinforcing portion 33 can buffer part of the external force, thereby improving the overall strength of the buffer member 30.

[0090] Of course, in some examples, none of the first reinforcing portions 33 are provided with the first installation channel 311. The first reinforcing portion 33 can also improve the overall strength of the buffer member 30. The specific installation method of the wire harness will not be elaborated here.

[0091] In some embodiments, a card slot is formed in the main body 31, and the card slot is configured to be the accommodating portion 32.

[0092] Exemplarily, in one of the directions intersecting with the second direction Y, the card slot is provided with a first installation channel 311. When a user acts on the main body 31, the first installation channel 311 can be switched to an open state for the wire harness to enter the card slot through the first installation channel 311.

[0093] In this way, the structure of the buffer member 30 is simplified, and the preparation difficulty of the buffer member 30 is reduced.

[0094] As Figure 6 shown, in some embodiments, the buffer member 30 further includes a second reinforcing portion 34, and the second reinforcing portion 34 is provided on the outer wall of the main body 31.

[0095] The second reinforcing portion 34 and the main body 31 can be integrally formed, and the second reinforcing portion 34 can extend along the second direction Y. The number of the second reinforcing portions 34 can also be one or more. When the second reinforcing portion 34 is one, along the second direction Y, the length of the second reinforcing portion 34 can be less than or equal to the length of the main body 31. When the second reinforcing portion 34 is multiple, the multiple second reinforcing portions 34 are spaced apart and distributed on the main body 31.

[0096] When the buffer member 30 is subjected to an external force impact, the second reinforcing portion 34 can withstand a certain external force impact to improve the impact resistance of the buffer member 30 and improve the overall strength of the buffer member 30.

[0097] Specifically, as Figure 5 andFigure 6 As shown, in some embodiments, the second reinforcing portion 34 is located on the surface of the main body 31 facing the battery cell 20. The second reinforcing portion 34 protrudes relative to the main body 31, and a groove is formed between the second reinforcing portion 34 and the main body 31.

[0098] Exemplarily, the second reinforcing portion 34 includes a horizontal rib and a plurality of vertical ribs. The plurality of vertical ribs are spaced apart along the second direction Y. The horizontal rib extends along the second direction Y and is perpendicular to all the vertical ribs. The horizontal rib, the vertical ribs and the main body 31 together form a groove.

[0099] When the buffer member 30 is installed between the side beam of the box body 10 and the battery cell 20, the horizontal rib and the vertical ribs are in contact with the battery cell 20. Since the surface of the buffer member 30 facing the battery cell 20 is formed with a groove, the contact area between the buffer member 30 and the battery cell 20 can be reduced, so as to reduce the influence on the battery cell 20 when the buffer member 30 is impacted by an external force without affecting the effect of the second reinforcing portion 34.

[0100] In some embodiments, the main body 31 and the accommodating portion 32 are integrally formed.

[0101] Both the main body 31 and the accommodating portion 32 can be prepared by using foam. Of course, the first reinforcing portion 33 and the second reinforcing portion 34 can also be prepared by using foam. The main body 31, the accommodating portion 32, the first reinforcing portion 33 and the second reinforcing portion 34 can all be prepared by an integral molding process, so as to improve the connection stability between the components of the buffer member 30 and speed up the preparation speed of the buffer member 30.

[0102] In some embodiments, along the width direction of the buffer member, there is a first distance between the inner wall of the box body 10 and the battery cell 20, and the first distance is smaller than the width of the buffer member 30.

[0103] In other words, when the buffer member 30 is installed between the inner wall of the box body 10 and the battery cell 20, the buffer member 30 is in a squeezed state, and the buffer member 30 is actually installed between the inner wall of the box body 10 and the battery cell 20 in an interference fit manner.

[0104] When the buffer member 30 is impacted by an external force, since the buffer member 30 is clamped between the box body 10 and the battery cell 20, the probability of the buffer member 30 moving can be reduced, the installation stability of the buffer member 30 is improved, and further the installation stability of the wire harness assembled in the buffer member 30 is improved.

[0105] In addition, some embodiments of the present application further provide an electrical device. The electrical device includes the battery pack 100 in the above embodiments, and the battery pack 100 is used to provide electrical energy.

[0106] During the assembly process of the battery pack 100 of the electrical device, because the buffer 30 is wrapped around the outside of the wire harness, the buffer 30 can protect the wire harness and reduce the probability of the wire harness being scratched by metal chips or debris generated during the assembly process. In addition, the buffer 30 is located between the side beam of the box body 10 and the battery cell 20, so the buffer 30 can play a buffering role to reduce the probability of the battery cell 20 directly contacting the side beam when it expands, thereby protecting the battery cell 20. In addition, compared with the simultaneous provision of a fixing part for fixing the wire harness and a component for achieving buffering, the above-mentioned buffer 30 has both a buffering effect and a function of fixing the wire harness, which can reduce the components required during the assembly process and reduce the weight of the battery pack 100.

[0107] like Figure 6 As shown, specifically in one embodiment, the battery pack 100 includes a box body 10, a battery cell 20 and a buffer 30. A wiring harness and a side beam are provided in the box body 10. When the wiring harness and the buffer 30 are assembled together, the buffer 30 is generally opened first so that the first installation channel 311 is in an open state. The wiring harness can be loaded into the accommodating portion 32 along the first installation channel 311. After the external force is removed, the first installation channel 311 switches from an open state to a closed state to fix the wiring harness.

[0108] Then, the buffer member 30 equipped with the wire harness may be installed between the side beam and the battery cell 20 , and the surface of the buffer member 30 facing the side beam and the side beam may be bonded together to fix the buffer member 30 to the side beam.

[0109] In this way, the buffer member 30 can fix the wire harness to the side beam and protect the wire harness, thereby reducing the probability that the wire harness is scratched by the residue in the box body 10 due to being exposed in the box body 10 .

[0110] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0111] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A battery pack, characterized in that: include: a box body, with a wiring harness inside; A battery cell, located in the box; as well as The buffer is located between the inner wall of the box and the battery cell, the buffer is wrapped around the outside of the wire harness, and the buffer is arranged on the inner wall of the box to fix the wire harness to the inner wall of the box.

2. The battery pack according to claim 1, characterized in that: The buffer also includes a main body, which is connected to the box body. The main body is provided with a plurality of accommodating parts, and each of the accommodating parts accommodates a different wire harness.

3. The battery pack according to claim 2, characterized in that: All the accommodating parts are spaced apart along a first direction, and the main body is further provided with a plurality of first installation channels, the first installation channels correspond to the accommodating parts one by one, and along the first direction, the first installation channels connect the inside and outside of the corresponding accommodating parts, and the first direction intersects with the routing direction of the wiring harness.

4. The battery pack according to claim 3, characterized in that: The main body includes two oppositely arranged ends, one of which is provided with the first installation channel, a second installation channel is provided between two adjacent accommodating portions, and the two adjacent accommodating portions are connected through the second installation channel.

5. The battery pack according to claim 3, characterized in that: The main body includes an elastic member, the elastic member is provided with the first installation channel, and the elastic member can generate elastic deformation so that the first installation channel can be switched between an open state and a closed state.

6. The battery pack according to claim 3, characterized in that: The buffer component further includes a first reinforcement portion, wherein the first reinforcement portion is located between two adjacent accommodating portions, and at least a portion of the first reinforcement portion is provided with at least a portion of the first installation channel.

7. The battery pack according to claim 2, characterized in that: A card slot is provided in the main body, and the card slot is configured as the accommodating portion.

8. The battery pack according to claim 2, characterized in that: The buffer member further includes a second reinforcement portion, and the second reinforcement portion is disposed on the outer wall of the main body.

9. The battery pack according to claim 8, characterized in that: The second reinforcement portion is located on a surface of the main body facing the battery cell. The second reinforcement portion is protruding relative to the main body and forms a groove with the main body.

10. The battery pack according to any one of claims 2 to 9, characterized in that: The main body and the accommodating portion are integrally formed.

11. The battery pack according to any one of claims 1 to 9, characterized in that: In the width direction of the buffer, there is a first distance between the inner wall of the box body and the battery cell; The first spacing is smaller than a width of the buffer.

12. An electrical device, characterized in that: The invention comprises a battery pack as claimed in any one of claims 1 to 11, wherein the battery pack is used to provide electrical energy.

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