Battery and electric device

Abstract

A battery (100) and an electric device (200). The battery (100) comprises: a plurality of battery cells (20); the electric connecting piece (40) comprises a first connecting part (41), a second connecting part (42) and an elastic section (43), the elastic section (43) is connected between the first connecting part (41) and the second connecting part (42), and the first connecting part (41) and the second connecting part (42) are respectively connected with the electrode terminals (22) of the two corresponding battery monomers (20), so that the two battery monomers (20) are electrically connected.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of batteries, and in particular to a battery and an electric device having the same. BACKGROUND

[0002] In the related art, a plurality of battery cells are arranged in the shell of an existing battery, and two battery cells are electrically connected by an electrical connecting member. Since the length of the electrical connecting member is fixed, when the volume of the battery cells expands, the connection between the two battery cells and the electrical connecting member is prone to tearing or breaking, which reduces the reliability of the battery. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the prior art. To this end, the embodiments of the present application provide a battery, which has an elastic electrical connecting member. When the battery cells expand, the electrical connecting member elongates, reducing the risk of tearing or breaking at the connection between the electrical connecting member and the corresponding electrode terminal, thereby improving the reliability of the battery.

[0004] The embodiments of the present application also provide an electric device.

[0005] In a first aspect, the embodiments of the present application provide a battery, comprising:

[0006] a plurality of battery cells;

[0007] an electrical connecting member, the electrical connecting member comprising a first connecting portion, a second connecting portion, and an elastic segment, the elastic segment being connected between the first connecting portion and the second connecting portion, and the first connecting portion and the second connecting portion being respectively connected to the electrode terminals of the corresponding battery cells to electrically connect two battery cells.

[0008] In the above technical solution, the elastic segment is connected between the first connecting portion and the second connecting portion. When the battery cells move in the width direction, the elastic segment elongates, reducing the risk of tearing or breaking at the connection between the electrical connecting member and the electrode terminals, improving the reliability of the electrical connecting member and the electrode terminals, and improving the working reliability of the battery.

[0009] In some embodiments, the elastic segment has a first connecting segment, a second connecting segment, and a third connecting segment, the first connecting segment being connected between the second connecting segment and the first connecting portion, and the third connecting segment being connected between the second connecting segment and the second connecting portion.

[0010] In the above technical solution, by providing the first connecting segment, the second connecting segment, and the third connecting segment, the elastic segment can be elastic and stretchable.

[0011] In some embodiments, the second connecting segment has a dimension in the width direction of the electrical connecting member that is greater than a dimension in the length direction of the electrical connecting member.

[0012] In the technical solution, the second connecting section is arranged in the width direction of the electric connector, and the width direction size L1 of the second connecting section is greater than the length direction size L2 of the second connecting section, so that the electric connector has better stretchability.

[0013] In some embodiments, the width direction size of the first connecting section is less than the length direction size of the first connecting section, and / or the width direction size of the third connecting section is less than the length direction size of the third connecting section.

[0014] In the technical solution, the width direction size L3 of the first connecting section is less than the length direction size L4 of the first connecting section, so that the first connecting section is arranged in the length direction of the electric connector, the elastic section has elasticity, the stretchability of the electric connector is improved, and the width direction size L5 of the third connecting section is less than the length direction size L6 of the third connecting section, so that the third connecting section is arranged in the length direction of the electric connector, the stretchability of the electric connector is further improved, and the electric connector is more stretchable.

[0015] In some embodiments, the second connecting section includes a plurality of first section bodies and at least one second section body, the plurality of first section bodies are sequentially and spaced apart in the length direction of the electric connector, and any two adjacent first section bodies are connected by the second section body.

[0016] In the technical solution, the plurality of first section bodies and the at least one second section body are arranged, so that the elastic section has elasticity, the electric connector has stretchability, and the risk of the electric connector being unable to stretch when the battery monomer moves is reduced.

[0017] In some embodiments, the width direction size L7 of the at least one first section body is greater than the length direction size L8 of the first section body, and the width direction size L9 of the second section body is less than the length direction size L10 of the second section body.

[0018] In the technical solution, the width direction size of the at least one first section body is greater than the length direction size of the first section body, and the width direction size of the second section body is less than the length direction size of the second section body, so that the at least one first section body is arranged in the width direction of the electric connector and the second section body is arranged in the length direction of the electric connector, the elastic section has elasticity, the electric connector has stretchability, and the risk of the electric connector being unable to stretch when the battery monomer moves is reduced.

[0019] In some embodiments, the at least two first section bodies are parallel to each other.

[0020] In the technical solution, the second connecting section is configured as a bending structure by arranging the at least two first segments in parallel with each other, so that the elasticity of the second connecting section is improved, and the elasticity of the electrical connector is improved.

[0021] In some embodiments, in the length direction of the electrical connector, the outermost second segment is staggered with the adjacent first connecting section and / or third connecting section in the width direction of the electrical connector.

[0022] In the technical solution, the outermost second segment is staggered with the adjacent first connecting section and / or third connecting section in the width direction of the electrical connector, so that the elasticity of the electrical connector is further improved, and the electrical connector is convenient to stretch and contract.

[0023] In some embodiments, in the width direction of the electrical connector, the first connecting section and the third connecting section are staggered.

[0024] In the technical solution, the first connecting section and the third connecting section are staggered, so that the elastic section has elasticity, the elastic section has stretchability, the deformation of the elastic section is facilitated, and the electrical connector is prevented from being disconnected from the corresponding electrode terminal.

[0025] In some embodiments, in the length direction of the electrical connector, the first connecting section and the third connecting section correspond.

[0026] In the technical solution, the first connecting section and the third connecting section are arranged in correspondence in the length direction of the electrical connector, so that the deformation amount of the elastic section is increased, and the stretchability of the electrical connector is improved.

[0027] In some embodiments, the elastic section is configured as a spiral structure.

[0028] In the technical solution, the elastic section is arranged in a spiral spring shape, so that the elastic section has elasticity, the elastic section is stretchable, and the electrical connector is stretchable.

[0029] In some embodiments, the first connecting part, the second connecting part, and the elastic section are integrally formed.

[0030] In the technical solution, the first connecting part, the second connecting part, and the elastic section are integrally formed, so that the connection strength between the first connecting part, the second connecting part, and the elastic section is improved, the elastic section is prevented from being separated from the first connecting part and the second connecting part, the electrical connector does not need to be produced separately, the development of the number of molds is reduced, and the manufacturing cost is reduced.

[0031] In some embodiments, the elastic section has a plurality of notched grooves, the plurality of notched grooves are through the elastic section in the thickness direction of the elastic section, the plurality of notched grooves are sequentially spaced apart in the length direction of the electrical connector, and at least one of the notched grooves extends to one side edge of the elastic section in the width direction of the electrical connector.

[0032] In the above technical solution, by setting a plurality of notched grooves, the elastic section can have elasticity. When the battery monomer moves, the elastic section can be stretched or contracted to reduce the risk of tearing or disconnecting the electrical connector and the electrode terminal of the corresponding battery monomer.

[0033] In some embodiments, each notched groove has a size in the width direction of the electrical connector that is greater than a size in the length direction of the electrical connector.

[0034] In the above technical solution, by setting each notched groove to have a size in the width direction of the electrical connector that is greater than a size in the length direction of the electrical connector, the notched groove can be set to a strip-shaped notched groove. When the first connecting part and the second connecting part are stressed, the elastic section can be deformed.

[0035] In some embodiments, notched grooves are arranged on both sides of the elastic section in the width direction of the electrical connector.

[0036] In the above technical solution, by arranging at least two notched grooves on both sides of the elastic section, the electrical connector can have stretchability, and the working performance of the electrical connector can be improved.

[0037] In a second aspect, the embodiments of the present application also provide a power consumption device, which comprises the battery described above.

[0038] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and / or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 is a schematic diagram of a power consumption device according to an embodiment of the present application;

[0040] Figure 2 is a schematic diagram of a battery according to an embodiment of the present application;

[0041] Figure 3 is a schematic diagram of an electrical connector according to a first embodiment of the present application;

[0042] Figure 4 is a schematic diagram of an electrical connector according to a second embodiment of the present application;

[0043] Figure 5 is a schematic diagram of a battery monomer according to an embodiment of the present application. DETAILED DESCRIPTION

[0044] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0045] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used in the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion. The terms "first", "second" and the like in the specification and claims of the present application and the above description of drawings are used to distinguish different objects, not to describe a particular order or primary and secondary relationship.

[0046] In the present application, the phrase "embodiments" means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears at various places in the specification does not necessarily all refer to the same embodiments, nor are they necessarily mutually exclusive or alternative embodiments to each other.

[0047] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection", "attach" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] In the present application, the term "and / or" is only a description of the association relationship between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can represent the existence of A alone, the existence of A and B together, and the existence of B alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects.

[0049] In the embodiments of the present application, the same reference signs represent the same components, and for the sake of brevity, the detailed description of the same components is omitted in different embodiments. It should be understood that the thickness, length and width of various components in the embodiments of the present application shown in the drawings, and the overall thickness, length and width of the integrated device are only exemplary and should not constitute any limitation on the present application.

[0050] As used herein, "a plurality" means two or more (including two).

[0051] The battery 100 mentioned in the embodiments of the present application can include one or more battery cells 20 to provide a single physical module with higher voltage and capacity. When there are a plurality of battery cells 20, the plurality of battery cells 20 are connected in series, in parallel, or in a mixed connection through an electrical connector 40.

[0052] In some embodiments, the battery 100 can be a battery module, and when there are a plurality of battery cells 20, the plurality of battery cells 20 are arranged and fixed to form a battery module.

[0053] In some embodiments, the battery 100 can be a battery pack, and the battery pack includes a box and battery cells 20, and the battery cells 20 or battery modules are contained in the box.

[0054] In some embodiments, the box can be part of the chassis structure of the vehicle. For example, part of the box can be at least part of the floor of the vehicle, or part of the box can be at least part of the cross beam and the longitudinal beam of the vehicle.

[0055] In some embodiments, the battery 100 can be an energy storage device. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0056] In the embodiments of the present application, the battery cell 20 can be a secondary battery, which refers to a battery cell 20 that can be activated by charging after discharging.

[0057] The battery cell 20 can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, etc., which are not limited in the embodiments of the present application.

[0058] The battery cell 20 generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charging and discharging process of the battery cell 20, active ions (such as lithium ions) are embedded and extracted between the positive electrode and the negative electrode. The separator is arranged between the positive electrode and the negative electrode, which can prevent the positive and negative electrodes from short-circuiting, and at the same time allow the active ions to pass through.

[0059] In some embodiments, the positive electrode can be a positive electrode sheet, which can include a positive electrode current collector and a positive electrode active material arranged on at least one surface of the positive electrode current collector.

[0060] As an example, the positive electrode current collector has two opposite surfaces in the thickness direction of itself, and the positive electrode active material is arranged on any one or both of the two opposite surfaces of the positive electrode current collector.

[0061] As an example, the positive electrode current collector can employ a metal foil or a composite current collector. For example, as a metal foil, silver surface-treated aluminum or stainless steel, stainless steel, copper, aluminum, nickel, a carbon electrode, carbon, nickel, or titanium, or the like can be employed. The composite current collector can include a polymer material base layer and a metal layer. The composite current collector can be formed by forming a metal material (aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver, and silver alloy, or the like) on a polymer material base material (such as a base material of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, or the like).

[0062] As an example, the positive electrode active material can include at least one of a lithium-containing phosphate, a lithium transition metal oxide, and a modified compound of each thereof. However, the present application is not limited to these materials, and other conventional materials that can be used as a battery positive electrode active material can also be used.

[0063] In some embodiments, the negative electrode can be a negative electrode sheet, which can include a negative electrode current collector.

[0064] As an example, the negative electrode current collector can employ a metal foil or a composite current collector. For example, as a metal foil, silver surface-treated aluminum or stainless steel, stainless steel, copper, aluminum, nickel, a carbon electrode, carbon, nickel, or titanium, or the like can be employed.

[0065] In some embodiments, the separator is a separator film. The present application does not have a particular limitation on the type of the separator film, and any publicly known porous structure separator film having good chemical stability and mechanical stability can be used.

[0066] As an example, the main material of the separator film can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, and polyvinylidene fluoride, and ceramic. The separator film can be a single layer film or a multi-layer composite film, and is not particularly limited. When the separator film is a multi-layer composite film, the materials of the respective layers can be the same or different, and are not particularly limited. The separator can be a separate component located between the positive and negative electrodes, or can be attached to the surface of the positive and negative electrodes.

[0067] In some embodiments, the separator is a solid-state electrolyte. The solid-state electrolyte is disposed between the positive electrode and the negative electrode, and functions to transport ions and separate the positive and negative electrodes.

[0068] In some embodiments, the electrode assembly is a jelly-roll structure. The positive electrode sheet and the negative electrode sheet are wound to form the jelly-roll structure.

[0069] In some embodiments, the electrode assembly is a stack structure.

[0070] In some embodiments, the battery cell 20 may include a housing. The housing is used to encapsulate components such as electrode assemblies and electrolytes. The housing may be made of steel, aluminum, plastic (such as polypropylene), composite metal (such as copper-aluminum composite), or aluminum-plastic film, etc.

[0071] In some embodiments, the housing includes an end cap and a casing, the casing having an opening, and the end cap closing the opening to form a sealed space for accommodating substances such as electrode assemblies and electrolytes. The casing may have one or more openings. The end cap may also be provided one or more times.

[0072] In some embodiments, at least one electrode terminal is provided on the housing, and the electrode terminal is electrically connected to the tab of the electrode assembly. The electrode terminal can be directly connected to the tab or indirectly connected to the tab through an adapter. The electrode terminal can be located on the end cap or on the housing.

[0073] In some implementations, an explosion-proof valve is provided on the housing. The explosion-proof valve is used to release the internal pressure of the battery cells.

[0074] As an example, the battery cell 20 can be a cylindrical battery cell 20, a prismatic battery cell 20, a pouch battery cell 20, or a battery cell 20 of other shapes. Prismatic battery cells 20 include prismatic battery cells 20, blade-shaped battery cells 20, and multi-prismatic batteries, such as hexagonal prismatic batteries. There are no particular limitations in the embodiments of this application. Please refer to... Figure 4 In this application embodiment, a square-shell battery cell 20 is used as an example.

[0075] In recent years, new energy vehicles have experienced rapid development. In the field of electric vehicles, batteries, as the power source, play an irreplaceable and crucial role. A battery consists of a casing and multiple individual battery cells housed within it. As a core component of new energy vehicles, batteries have high requirements in terms of both safety and cycle life.

[0076] The inventors discovered that when existing batteries are charged, because the length of the electrical connector is fixed, the connection between the two battery cells and the electrical connector is prone to tearing or breaking when the volume of the battery cells expands, which reduces the reliability of the battery.

[0077] Based on the above considerations, in order to solve the problem that the connection between the battery cell and the electrical connector is prone to tearing or breaking when the battery cell expands in volume, the inventors have conducted in-depth research and designed a battery that makes the electrical connector 40 elastic by setting an elastic segment 43 on the electrical connector 40. When the battery cell 20 expands in volume, the electrical connector 40 elongates, reducing the risk of tearing or breaking at the connection between the electrical connector 40 and the corresponding electrode terminal 22, thereby improving the reliability of the battery 100.

[0078] The batteries disclosed in this application can be used, but are not limited to, in electrical devices such as vehicles, ships, or aircraft. This helps to broaden the applicability of the batteries.

[0079] This application provides an electrical device that uses a battery as a power source. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0080] For ease of explanation, the following embodiments will be described using a vehicle as an example of an electrical device according to an embodiment of this application.

[0081] In some embodiments of this application, the battery can not only serve as the operating power source for the vehicle, but also as the driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0082] The following is for reference. Figures 1-5 A battery 100 according to an embodiment of this application is described.

[0083] like Figures 2-5 As shown, the battery 100 according to an embodiment of this application includes an electrical connector 40 and a plurality of battery cells 20. The electrical connector 40 includes a first connecting portion 41, a second connecting portion 42, and an elastic segment 43. The elastic segment 43 is connected between the first connecting portion 41 and the second connecting portion 42. The first connecting portion 41 and the second connecting portion 42 are respectively connected to the electrode terminals 22 of two corresponding battery cells 20 to electrically connect the two battery cells 20.

[0084] As an example, the battery 100 may also include a frame 10, within which multiple battery cells 20 are disposed, and the multiple battery cells 20 may be stacked along the thickness direction of the battery cells 20. When the battery 100 is a battery pack, the frame 10 may be a housing structure of the battery 100, or the frame 10 may be a part of the housing structure of the battery 100. When the battery 100 is a battery module (i.e., a battery assembly), the frame 10 may be a first end limiting member and a second end limiting member of the battery module, or the frame 10 may be a first end limiting member, a second end limiting member, and a side plate structure of the battery module, with the side plate structure connecting the first end limiting member and the second end limiting member to form a frame 10 surrounding the multiple battery cells 20.

[0085] The electrical connector 40 is a metal part, which connects two battery cells 20 to achieve electrical connection between the two battery cells 20. The first connecting part 41 is connected to the electrode terminal 22 of one of the two electrically connected battery cells 20, and the second connecting part 42 is connected to the electrode terminal 22 of one of the two electrically connected battery cells 20 to achieve electrical connection between the two battery cells 20.

[0086] As an example, such as Figure 3 and Figure 4 As shown, the first connecting portion 41 has a first connecting area 411, which is connected to the electrode terminal 22 of the battery cell 20, for example, by welding the first connecting area 411 to the electrode terminal 22. The second connecting portion 42 has a second connecting area 421, which is also connected to the electrode terminal 22 of the battery cell 20, for example, by welding the second connecting area 421 to the electrode terminal 22. Since the electrical connector 40 connects the two battery cells 20, if the electrical connector 40 lacks elasticity when the battery cells 20 expand, the connection between the electrical connector 40 and the electrode terminal may tear or break.

[0087] In this application, by providing an elastic segment 43 on the electrical connector 40, the elastic segment 43 connects between the first connecting portion 41 and the second connecting portion 42. The elastic segment 43 has a certain elasticity. When the battery cell 20 expands, the elastic segment 43 elongates, reducing the risk of tearing or breaking at the connection between the electrical connector 40 and the electrode terminal 22, improving the reliability of the connection between the electrical connector 40 and the electrode terminal 22, and improving the operational reliability of the battery 100. When the battery cell 20 does not expand, the elastic segment 43 returns to its elastic deformation.

[0088] According to some embodiments of this application, such as Figure 3 As shown, the elastic segment 43 has a first connecting segment 431, a second connecting segment 432 and a third connecting segment 433. The first connecting segment 431 is connected between the second connecting segment 432 and the first connecting portion 41, and the third connecting segment 433 is connected between the second connecting segment 432 and the second connecting portion 42.

[0089] Wherein, after the first connecting segment 431 is connected between the second connecting segment 432 and the first connecting part 41, the second connecting segment 432 and the first connecting part 41 are spaced apart, and a gap is formed between the second connecting segment 432 and the first connecting part 41. After the third connecting segment 433 is connected between the second connecting segment 432 and the second connecting part 42, the second connecting segment 432 and the second connecting part 42 are spaced apart, and a gap is formed between the second connecting segment 432 and the second connecting part 42. This allows the elastic segment 43 to be elastic and to be stretchable.

[0090] According to some embodiments of this application, such as Figure 3As shown, the second connecting segment 432 has a greater width dimension than the electrical connector 40.

[0091] Among them, the width direction of the electrical connector 40 is Figure 3 and Figure 4 In the Y direction, the length direction of the electrical connector 40 is... Figure 3 and Figure 4 In the X direction. By making the width dimension L1 of the second connecting segment 432 in the electrical connector 40 greater than the length dimension L2 of the second connecting segment 432 in the electrical connector 40, and by extending the second connecting segment 432 in the width direction of the electrical connector 40, and after the first connecting segment 431 is connected between the second connecting segment 432 and the first connecting portion 41, and the third connecting segment 433 is connected between the second connecting segment 432 and the second connecting portion 42, the elastic segment 43 can be made elastic, and the electrical connector 40 can have extensibility.

[0092] According to some embodiments of this application, such as Figure 3 As shown, the width dimension of the first connecting segment 431 in the electrical connector 40 is smaller than the length dimension of the first connecting segment 431 in the electrical connector 40 and / or the width dimension of the third connecting segment 433 in the electrical connector 40 is smaller than the length dimension of the third connecting segment 433 in the electrical connector 40.

[0093] Specifically, the width dimension L3 of the first connecting segment 431 in the electrical connector 40 is smaller than the length dimension L4 of the first connecting segment 431 in the electrical connector 40, or the width dimension L5 of the third connecting segment 433 in the electrical connector 40 is smaller than the length dimension L6 of the third connecting segment 433 in the electrical connector 40, or the width dimension L3 of the first connecting segment 431 in the electrical connector 40 is smaller than the length dimension L4 of the first connecting segment 431 in the electrical connector 40 and the width dimension L5 of the third connecting segment 433 in the electrical connector 40 is smaller than the length dimension L6 of the third connecting segment 433 in the electrical connector 40. This application uses the example of the width dimension of the first connecting segment 431 in the electrical connector 40 being smaller than the length dimension of the first connecting segment 431 in the electrical connector 40 and the width dimension of the third connecting segment 433 in the electrical connector 40 being smaller than the length dimension of the third connecting segment 433 in the electrical connector 40 to illustrate this.

[0094] Furthermore, by making the width dimension of the first connecting segment 431 in the electrical connector 40 smaller than its length dimension in the electrical connector 40, and by extending the first connecting segment 431 in the length direction of the electrical connector 40, the elastic segment 43 can be further made elastic, improving the stretchability of the electrical connector 40. In addition, by making the width dimension of the third connecting segment 433 in the electrical connector 40 smaller than its length dimension in the electrical connector 40, and by extending the third connecting segment 433 in the length direction of the electrical connector 40, the stretchability of the electrical connector 40 is further improved, which is more conducive to the stretching and contraction of the electrical connector 40.

[0095] According to some embodiments of this application, such as Figure 4 As shown, the second connecting segment 432 includes: a plurality of first segments 4321 and at least one second segment 4322. The plurality of first segments 4321 are spaced apart in sequence along the length of the electrical connector 40, and a second segment 4322 is connected between any two adjacent first segments 4321.

[0096] In this application, the number of first segment bodies 4321 is greater than or equal to two. For example, the number of first segment bodies 4321 may be two, three, or four. This application uses the example of two first segment bodies 4321 and one second segment body 4322. The second segment body 4322 is connected between the two first segment bodies 4321. One of the two first segment bodies 4321 is connected to the first connecting segment 431, and the other of the two first segment bodies 4321 is connected to the third connecting segment 433.

[0097] In the above technical solution, by setting multiple first segments 4321 and at least one second segment 4322, the elastic segment 43 can be made elastic, the electrical connector 40 can be made stretchable, and the risk of the electrical connector 40 not being able to stretch when the battery cell 20 moves is reduced.

[0098] According to some embodiments of this application, at least one first segment 4321 has a width dimension in the electrical connector 40 that is greater than the length dimension in the electrical connector 40, and the second segment 4322 has a width dimension in the electrical connector 40 that is smaller than the length dimension in the electrical connector 40.

[0099] In this application, the width dimension L7 of multiple first segments 4321 in the electrical connector 40 is greater than the length dimension L8 of the first segment 4321 in the electrical connector 40. By making the width dimension L7 of the first segment 4321 in the electrical connector 40 greater than the length dimension L8 of the first segment 4321 in the electrical connector 40, and the width dimension L9 of the second segment 4322 in the electrical connector 40 less than the length dimension L10 of the second segment 4322 in the electrical connector 40, the multiple first segments 4321 extend in the width direction of the electrical connector 40, and the second segment 4322 extends in the length direction of the electrical connector 40. This makes the elastic segment 43 elastic, gives the electrical connector 40 extensible performance, and reduces the risk that the electrical connector 40 cannot extend or retract when the battery cell 20 moves.

[0100] According to some embodiments of this application, at least two first segments 4321 are parallel to each other.

[0101] In this embodiment, multiple first segments 4321 extend in the width direction of the electrical connector 40. As an example, the multiple first segments 4321 are parallel to each other. By having at least two first segments 4321 parallel to each other, the second connecting segment 432 can be constructed as a bent structure, which can improve the elasticity of the second connecting segment 432, thereby improving the elasticity of the electrical connector 40.

[0102] According to some embodiments of this application, in the length direction of the electrical connector 40, the second segment 4322 located at the outermost end is offset from the adjacent first connecting segment 431 and / or third connecting segment 433 in the width direction of the electrical connector 40.

[0103] In the length direction of the electrical connector 40, the second segment 4322 located at the end is staggered from the adjacent first connecting segment 431 or third connecting segment 433 in the width direction of the electrical connector 40, or in the length direction of the electrical connector 40, the second segment 4322 located at the end is staggered from the adjacent first connecting segment 431 and third connecting segment 433 in the width direction of the electrical connector 40.

[0104] In the above technical solution, by offsetting the second segment 4322 located at the outermost end from the adjacent first connecting segment 431 and / or third connecting segment 433 in the width direction of the electrical connector 40, the elasticity of the electrical connector 40 can be further increased, making it easier for the electrical connector 40 to extend and retract.

[0105] According to some embodiments of this application, the first connecting segment 431 and the third connecting segment 433 are staggered in the width direction of the electrical connector 40.

[0106] By offsetting the first connecting segment 431 and the third connecting segment 433 in the width direction of the electrical connector 40, the elastic segment 43 can be made elastic and has the ability to stretch and contract, which is beneficial to the deformation of the elastic segment 43 and further prevents the electrical connector 40 from disconnecting from the corresponding electrode terminal.

[0107] According to some embodiments of this application, such as Figure 4 As shown, in the length direction of the electrical connector 40, the first connecting segment 431 and the third connecting segment 433 correspond to each other.

[0108] like Figure 4 As shown, the example is a first segment 4321 with two segments and a second segment 4322 with one segment. When there are two first segments 4321, a second segment 4322 connects the two first segments 4321. If the first connecting segment 431 and the third connecting segment 433 are misaligned in the width direction of the electrical connector 40, that is, the first connecting segment 431 and the third connecting segment 433 are not aligned in the length direction of the electrical connector 40, the deformation of the elastic segment 43 is small, resulting in a small amount of expansion and contraction of the electrical connector 40. However, by aligning the first connecting segment 431 and the third connecting segment 433 in the length direction of the electrical connector 40, the deformation of the elastic segment 43 can be increased, thereby improving the expansion and contraction of the electrical connector 40.

[0109] According to some embodiments of this application, the elastic segment 43 can be constructed as a spiral structure.

[0110] In this embodiment, the elastic segment 43 can be configured to resemble a helical spring shape, making the elastic segment 43 elastic and stretchable, thereby making the electrical connector 40 stretchable.

[0111] According to some embodiments of this application, the first connecting part 41, the second connecting part 42, and the elastic segment 43 are integrally formed. In this technical solution, by integrally forming the first connecting part 41, the second connecting part 42, and the elastic segment 43, the connection strength between the first connecting part 41, the second connecting part 42, and the elastic segment 43 can be improved, the elastic segment 43 can be prevented from separating from the first connecting part 41 and the second connecting part 42, and there is no need to produce the electrical connector 40 separately, which can reduce the number of molds developed and reduce manufacturing costs.

[0112] According to some embodiments of this application, such as Figure 3 and Figure 4 As shown, the elastic segment 43 has a plurality of notches 434, which penetrate the elastic segment 43 in the thickness direction and are spaced apart in sequence in the length direction of the electrical connector 40. At least one notch 434 extends to one side edge of the elastic segment 43 in the width direction of the electrical connector 40.

[0113] Among them, such as Figure 3 and Figure 4 As shown, the electrical connector 40 includes a first connecting portion 41, a second connecting portion 42, and an elastic segment 43. The first connecting portion 41 and the second connecting portion 42 are respectively connected to the electrode terminals 22 of the corresponding battery cells 20. The elastic segment 43 is connected between the first connecting portion 41 and the second connecting portion 42. The elastic segment 43 has a plurality of notches 434, which penetrate the elastic segment 43 in the thickness direction and are spaced apart in sequence in the length direction of the electrical connector 40. At least one notch 434 extends to one edge of the elastic segment 43 in the width direction of the electrical connector 40. By providing a plurality of notches 434, the elastic segment 43 can be made elastic. When the battery cells 20 move, the elastic segment 43 expands and contracts, reducing the risk of tearing or breaking at the connection between the electrical connector 40 and the electrode terminals of the corresponding battery cells 20.

[0114] According to some embodiments of this application, in the width direction of the electrical connector 40, notches 434 are provided on both sides of the elastic segment 43.

[0115] Among them, such as Figure 3 and Figure 4 As shown, in the width direction of the electrical connector 40, notches 434 are provided on both sides of the elastic segment 43. This arrangement enables the electrical connector 40 to have extensibility and can improve the working performance of the electrical connector 40.

[0116] According to some embodiments of this application, the width dimension of each notch 434 of the electrical connector 40 is greater than the length dimension of the notch 434 of the electrical connector 40.

[0117] By making the notch 434 larger in the width direction than in the length direction of the electrical connector 40, the notch 434 is constructed as a long strip groove. This allows the notch 434 to be set as a strip-shaped notch 434, which facilitates the deformation of the elastic segment 43 when the first connecting part 41 and the second connecting part 42 are subjected to force.

[0118] This application also provides an electrical device 200, which includes the battery 100 of the above embodiments. The battery 100 can be used to provide electrical energy to the electrical device 200.

[0119] The following is for reference. Figure 3 Figure 4 Figure 3 Some embodiments of the electrical connector 40 of this application are described.

[0120] The electrical connector 40 includes a first connecting portion 41, a second connecting portion 42, and an elastic segment 43. The elastic segment 43 connects the first connecting portion 41 and the second connecting portion 42. The elastic segment 43 includes a first connecting segment 431, a second connecting segment 432, and a third connecting segment 433. The first connecting segment 431 connects the second connecting segment 432 and the first connecting portion 41, and the third connecting segment 433 connects the second connecting segment 432 and the second connecting portion 42. The second connecting segment 432 extends in the width direction of the electrical connector 40, and the first connecting segment 431 and the third connecting segment 433 extend in the length direction of the electrical connector 40. The first connecting portion 41 and the second connecting portion 42 respectively connect to the electrode terminals 22 of two battery cells 20 to achieve electrical connection between the two battery cells 20. By providing an elastic segment 43 on the electrical connector 40, the electrical connector 40 becomes elastic. When the volume of the battery cell 20 expands, the electrical connector 40 elongates, reducing the risk of tearing or breaking at the connection between the electrical connector 40 and the corresponding electrode terminal 22, thereby improving the reliability of the battery 100.

[0121] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0122] 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.

[0123] 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, characterized in that, include: Multiple battery cells; An electrical connector includes a first connecting portion, a second connecting portion, and an elastic segment. The elastic segment is connected between the first connecting portion and the second connecting portion. The first connecting portion and the second connecting portion are respectively connected to the electrode terminals of two corresponding battery cells to electrically connect the two battery cells. The first connecting portion, the second connecting portion, and the elastic segment are integrally formed.

2. The battery according to claim 1, characterized in that, The elastic segment has a first connecting segment, a second connecting segment, and a third connecting segment. The first connecting segment is connected between the second connecting segment and the first connecting portion, and the third connecting segment is connected between the second connecting segment and the second connecting portion.

3. The battery according to claim 2, characterized in that, The second connecting segment has a width dimension greater than its length dimension in the electrical connector.

4. The battery according to claim 3, characterized in that, The first connecting segment has a width dimension smaller than the length dimension of the first connecting segment in the electrical connector, and / or the third connecting segment has a width dimension smaller than the length dimension of the third connecting segment in the electrical connector.

5. The battery according to any one of claims 2-4, characterized in that, The second connecting segment includes: a plurality of first segments and at least one second segment, wherein the plurality of first segments are spaced apart sequentially along the length of the electrical connector, and a second segment is connected between any two adjacent first segments.

6. The battery according to claim 5, characterized in that, At least one of the first segments has a width dimension greater than its length dimension in the electrical connector, and the second segment has a width dimension smaller than its length dimension in the electrical connector.

7. The battery according to claim 5 or 6, characterized in that, At least two of the first segments are parallel to each other.

8. The battery according to any one of claims 5-7, characterized in that, In the length direction of the electrical connector, the second segment located at the outermost end is offset from the adjacent first connecting segment and / or the third connecting segment in the width direction of the electrical connector.

9. The battery according to any one of claims 2-8, characterized in that, In the width direction of the electrical connector, the first connecting segment and the third connecting segment are staggered.

10. The battery according to any one of claims 2-8, characterized in that, Along the length of the electrical connector, the first connecting segment and the third connecting segment correspond to each other.

11. The battery according to any one of claims 1-10, characterized in that, The elastic segment is constructed in a spiral shape.

12. The battery according to any one of claims 1-11, characterized in that, The elastic segment has multiple notches, which penetrate the elastic segment in the thickness direction and are spaced apart in sequence in the length direction of the electrical connector. At least one notch extends to one edge of the elastic segment in the width direction of the electrical connector.

13. The battery according to claim 12, characterized in that, Each of the notches / grooves has a width dimension greater than its length dimension in the electrical connector.

14. The battery according to claim 12 or 13, characterized in that, In the width direction of the electrical connector, the notch groove is provided on both sides of the elastic segment.

15. An electrical appliance, characterized in that, Includes the battery according to any one of claims 1-14.

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