WO2024130499A1 - 电池以及用电装置 - Google Patents

电池以及用电装置 Download PDF

Info

Publication number
WO2024130499A1
WO2024130499A1 PCT/CN2022/140085 CN2022140085W WO2024130499A1 WO 2024130499 A1 WO2024130499 A1 WO 2024130499A1 CN 2022140085 W CN2022140085 W CN 2022140085W WO 2024130499 A1 WO2024130499 A1 WO 2024130499A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrical connector
segment
battery
dimension
elastic
Prior art date
Application number
PCT/CN2022/140085
Other languages
English (en)
French (fr)
Inventor
李全国
金海族
欧阳楚英
赵丰刚
Original Assignee
宁德时代新能源科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to PCT/CN2022/140085 priority Critical patent/WO2024130499A1/zh
Publication of WO2024130499A1 publication Critical patent/WO2024130499A1/zh

Links

Images

Definitions

  • the present application relates to the field of batteries, and in particular to a battery and an electrical device having the battery.
  • a plurality of battery cells are arranged in the outer shell of an existing battery, and two battery cells are electrically connected through an electrical connector. Since the length of the electrical connector is fixed, when the volume of the battery cell expands, the connection between the two battery cells and the electrical connector is easily torn or disconnected, thereby reducing the reliability of the battery.
  • the present application aims to solve at least one of the technical problems existing in the prior art.
  • the present application proposes a battery whose electrical connector is elastic. When the battery cell expands, the electrical connector stretches, reducing the risk of tearing or disconnection at the connection between the electrical connector and the corresponding electrode terminal, thereby improving the reliability of the battery.
  • the embodiment of the present application also provides an electrical device.
  • an embodiment of the present application provides a battery, comprising:
  • the electrical connector includes a first connecting portion, a second connecting portion and an elastic section, wherein the elastic section is connected between the first connecting portion and the second connecting portion, and the first connecting portion and the second connecting portion are respectively connected to electrode terminals of corresponding battery cells to electrically connect the two battery cells.
  • the elastic section is connected between the first connecting part and the second connecting part.
  • the elastic section stretches, reducing the risk of tearing or disconnection at the connection between the electrical connector and the electrode terminal, improving the connection reliability between the electrical connector and the electrode terminal, and improving the battery operation reliability.
  • 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.
  • the elastic segment can be made elastic and retractable.
  • a dimension of the second connecting segment in a width direction of the electrical connector is greater than a dimension of the second connecting segment in a length direction of the electrical connector.
  • the second connecting section is extended in the width direction of the electrical connector by making the width dimension L1 of the second connecting section larger than the length dimension L2 of the second connecting section of the electrical connector, so that the electrical connector has better retractable performance.
  • the width dimension of the first connection segment in the electrical connector is smaller than the length dimension of the first connection segment in the electrical connector and/or the width dimension of the third connection segment in the electrical connector is smaller than the length dimension of the third connection segment in the electrical connector.
  • the first connecting section is extended in the length direction of the electrical connector, which can further make the elastic section elastic and improve the telescopic performance of the electrical connector
  • the third connecting section is extended in the length direction of the electrical connector, which further improves the telescopic performance of the electrical connector and is more conducive to the telescopic performance of the electrical connector.
  • the second connecting segment includes: a plurality of first segments and at least one second segment, the plurality of first segments are sequentially spaced apart in the length direction of the electrical connector, and a second segment is connected between any two adjacent first segments.
  • the elastic segment can be made elastic, and the electrical connector can be made retractable, thereby reducing the risk of the electrical connector being unable to retract when the battery cell moves.
  • At least one first segment has a width dimension L7 greater than a length dimension L8 of the first segment in the electrical connector, and a width dimension L9 of the second segment is less than a length dimension L10 of the second segment in the electrical connector.
  • At least one first segment body have a larger dimension in the width direction of the electrical connector than the first segment body in the length direction of the electrical connector
  • making the second segment body have a smaller dimension in the width direction of the electrical connector than the second segment body in the length direction of the electrical connector
  • at least one first segment body can be extended in the width direction of the electrical connector and the second segment body can be extended in the length direction of the electrical connector, so that the elastic segment has elasticity and the electrical connector has telescopic properties, thereby reducing the risk of the electrical connector failing to telescope when the battery cell moves.
  • At least two first segments are parallel to each other.
  • the second connecting section can be constructed as a bent structure, which can improve the elasticity of the second connecting section, thereby improving the elasticity of the electrical connector.
  • the second segment located at the outermost end is staggered with the adjacent first connecting segment and/or third connecting segment in the width direction of the electrical connector.
  • the elasticity of the electrical connector can be further increased, facilitating the expansion and contraction of the electrical connector.
  • the first connecting section and the third connecting section are staggered in the width direction of the electrical connector.
  • the elastic section can be made elastic and have telescopic properties, which is beneficial to the deformation of the elastic section and further prevents the electrical connector from being disconnected from the corresponding electrode terminal.
  • the first connecting section and the third connecting section correspond to each other.
  • the deformation amount of the elastic section can be increased, and the retractability of the electrical connector can be improved.
  • the elastic segment is configured as a helical structure.
  • the elastic section can be set to be similar to a spiral spring shape, so that the elastic section has elasticity and is retractable, thereby making the electrical connector retractable.
  • the first connecting portion, the second connecting portion and the elastic segment are integrally formed.
  • the connection strength between the first connecting part, the second connecting part and the elastic segment can be improved, and the elastic segment can be prevented from being separated from the first connecting part and the second connecting part.
  • the elastic segment has a plurality of notches, which penetrate the elastic segment in the thickness direction of the elastic segment, and are spaced apart in sequence in the length direction of the electrical connector. At least one of the notches extends to a side edge of the elastic segment in the width direction of the electrical connector.
  • the elastic section can be made elastic.
  • the elastic section expands and contracts, thereby reducing the risk of tearing or disconnection of the connection between the electrical connector and the electrode terminal of the corresponding battery cell.
  • a dimension of each notch groove in a width direction of the electrical connector is greater than a dimension of each notch groove in a length direction of the electrical connector.
  • each notch in the width direction of the electrical connector can be set as a strip-shaped notch, which facilitates deformation of the elastic section when the first connecting part and the second connecting part are subjected to force.
  • notch grooves are provided on both sides of the elastic section in the width direction of the electrical connector.
  • the electrical connector can be made retractable, thereby improving the working performance of the electrical connector.
  • an embodiment of the present application further provides an electrical device, comprising the above-mentioned battery.
  • FIG1 is a schematic diagram of an electric device according to an embodiment of the present application.
  • FIG2 is a schematic diagram of a battery according to an embodiment of the present application.
  • FIG3 is a schematic diagram of an electrical connector according to a first embodiment of the present application.
  • FIG4 is a schematic diagram of an electrical connector according to a second embodiment of the present application.
  • FIG. 5 is a schematic diagram of a battery cell according to an embodiment of the present application.
  • the terms “installed”, “connected”, “connected”, and “attached” should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements.
  • installed should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements.
  • a and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone.
  • the character "/" in this application generally indicates that the associated objects before and after are in an "or" relationship.
  • the battery 100 mentioned in the embodiment of the present application may include one or more battery cells 20 to provide a single physical module with higher voltage and capacity.
  • the multiple battery cells 20 are connected in series, in parallel or in mixed connection through the electrical connector 40.
  • the battery 100 may be a battery module.
  • the multiple battery cells 20 are arranged and fixed to form a battery module.
  • the battery 100 may be a battery pack, which includes a case and battery cells 20 , wherein the battery cells 20 or battery modules are accommodated in the case.
  • the box body can be used as a part of the chassis structure of the vehicle.
  • part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.
  • the battery 100 may be an energy storage device, including an energy storage container, an energy storage cabinet, and the like.
  • the battery cell 20 may be a secondary battery.
  • a secondary battery refers to a battery cell 20 that can be continuously used by activating active materials by charging after the battery cell 20 is discharged.
  • 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 storage battery, etc., which is not limited in the embodiments of the present application.
  • the battery cell 20 generally includes an electrode assembly.
  • the electrode assembly includes a positive electrode, a negative electrode, and a separator.
  • active ions such as lithium ions
  • the separator is arranged between the positive electrode and the negative electrode to prevent the positive and negative electrodes from short-circuiting, while allowing active ions to pass through.
  • the positive electrode may be a positive electrode sheet, and the positive electrode sheet may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.
  • the positive electrode current collector has two surfaces facing each other in its thickness direction, and the positive electrode active material is disposed on either or both of the two facing surfaces of the positive electrode current collector.
  • the positive electrode current collector may be a metal foil or a composite current collector.
  • the metal foil aluminum or stainless steel, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel or titanium, etc., treated with silver surface, may be used.
  • the composite current collector may include a polymer material base and a metal layer.
  • the composite current collector may be formed by forming a metal material (aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).
  • the positive electrode active material may include at least one of the following materials: lithium-containing phosphates, lithium transition metal oxides, and their respective modified compounds.
  • the present application is not limited to these materials, and other conventional materials that can be used as positive electrode active materials for batteries may also be used.
  • the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.
  • the negative electrode current collector may be a metal foil or a composite current collector.
  • the metal foil aluminum or stainless steel treated with silver, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel or titanium, etc. may be used.
  • the separator is a separator.
  • the present application has no particular limitation on the type of separator, and any known separator with a porous structure having good chemical stability and mechanical stability can be selected.
  • the main material of the separator can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramic.
  • the separator can be a single-layer film or a multi-layer composite film, without special restrictions. When the separator is a multi-layer composite film, the materials of each layer can be the same or different, without special restrictions.
  • the separator can be a separate component located between the positive and negative electrodes, or it can be attached to the surface of the positive and negative electrodes.
  • the separator is a solid electrolyte, which is disposed between the positive electrode and the negative electrode and serves to transmit ions and isolate the positive and negative electrodes.
  • the electrode assembly is a wound structure, wherein the positive electrode sheet and the negative electrode sheet are wound into the wound structure.
  • the electrode assembly is a laminate structure.
  • the battery cell 20 may include a housing.
  • the housing is used to encapsulate components such as the electrode assembly and the electrolyte.
  • the housing may be a steel housing, an aluminum housing, a plastic housing (such as polypropylene), a composite metal housing (such as a copper-aluminum composite housing), or an aluminum-plastic film.
  • the housing includes an end cap and a shell, the shell is provided with an opening, and the end cap closes the opening to form a closed space for accommodating substances such as the electrode assembly and the electrolyte.
  • the shell may be provided with one or more openings.
  • One or more end caps may also be provided.
  • At least one electrode terminal is disposed on the housing, and the electrode terminal is electrically connected to the electrode tab of the electrode assembly.
  • the electrode terminal may be directly connected to the electrode tab, or may be indirectly connected to the electrode tab through a transition component.
  • the electrode terminal may be disposed on the end cap, or may be disposed on the housing.
  • an explosion-proof valve is provided on the housing, and the explosion-proof valve is used to release the internal pressure of the battery cell.
  • the battery cell 20 may be a cylindrical battery cell 20, a prismatic battery cell 20, a soft-pack battery cell 20 or a battery cell 20 of other shapes, and the prismatic battery cell 20 includes a square-shell battery cell 20, a blade-shaped battery cell 20, a multi-prismatic battery, and the multi-prismatic battery is, for example, a hexagonal battery, etc., and there is no particular limitation in the embodiment of the present application.
  • the embodiment of the present application takes the square-shell battery cell 20 as an example.
  • batteries as the power source of electric vehicles, play an irreplaceable and important role.
  • the battery consists of a box and multiple battery cells contained in the box.
  • batteries as core components of new energy vehicles, have high requirements in terms of safety and cycle life.
  • the inventors have found that when the existing battery is charged, since the length of the electrical connector is fixed, when the volume of the battery cell expands, the connection between the two battery cells and the electrical connector is easily torn or disconnected, which reduces the reliability of the battery.
  • the inventor has designed a battery after in-depth research.
  • the electrical connector 40 is made elastic.
  • the electrical connector 40 stretches, reducing the risk of tearing or disconnection at the connection between the electrical connector 40 and the corresponding electrode terminal 22, thereby improving the reliability of the battery 100.
  • the battery disclosed in the embodiment of the present application can be used in, but not limited to, electrical devices such as vehicles, ships or aircraft, which is beneficial to improving the application scope of the battery.
  • the embodiment of the present application provides an electric device using a battery as a power source
  • the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc.
  • the electric toy may include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc.
  • the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.
  • the battery can be used not only as an operating power source for the vehicle, but also as a driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.
  • a battery 100 according to an embodiment of the present application is described below with reference to FIGS. 1 to 5 .
  • the battery 100 includes: an electrical connector 40 and a plurality of battery cells 20.
  • the electrical connector 40 includes a first connector 41, a second connector 42 and an elastic segment 43, wherein the elastic segment 43 is connected between the first connector 41 and the second connector 42, and the first connector 41 and the second connector 42 are respectively connected to the electrode terminals 22 of the corresponding two battery cells 20 to electrically connect the two battery cells 20.
  • the battery 100 may further include a frame 10, and a plurality of battery cells 20 are all disposed in the frame 10, and the plurality of battery cells 20 may be stacked along the thickness direction of the battery cells 20.
  • the frame 10 may be a box structure of the battery 100, or the frame 10 may be a part of the box structure of the battery 100.
  • the frame 10 may be a first end stopper and a second end stopper of the battery module, or the frame 10 may be a first end stopper, a second end stopper and a side plate structure of the battery module, and the side plate structure connects the first end stopper and the second end stopper to form a frame 10 surrounding the plurality of battery cells 20.
  • the electrical connector 40 is a metal part, and is connected between two battery cells 20 to achieve electrical connection between the two battery cells 20.
  • the first connecting portion 41 is connected to the electrode terminal 22 of one of the two battery cells 20 that are electrically connected
  • the second connecting portion 42 is connected to the electrode terminal 22 of one of the two battery cells 20 that are electrically connected to achieve electrical connection between the two battery cells 20.
  • the first connection portion 41 has a first connection area 411, and the first connection area 411 is connected to the electrode terminal 22 of the battery cell 20, for example, the first connection area 411 is welded to the electrode terminal 22, and the second connection portion 42 has a second connection area 421, and the second connection area 421 is connected to the electrode terminal 22 of the battery cell 20, for example, the second connection area 421 is welded to the electrode terminal 22. Since the electrical connector 40 is connected between two battery cells 20, when the battery cell 20 expands, if the electrical connector 40 has no elasticity, the connection between the electrical connector 40 and the electrode terminal will be torn or disconnected.
  • an elastic segment 43 is provided on the electrical connector 40, and the elastic segment 43 is connected between the first connection portion 41 and the second connection portion 42.
  • the elastic segment 43 has a certain elasticity. When the battery cell 20 expands, the elastic segment 43 stretches, thereby reducing the risk of tearing or disconnecting 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 working reliability of the battery 100. When the battery cell 20 is not expanded, the elastic segment 43 recovers its elastic deformation.
  • 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.
  • a dimension of the second connecting segment 432 in a width direction of the electrical connector 40 is greater than a dimension of the second connecting segment 432 in a length direction of the electrical connector 40 .
  • the width direction of the electrical connector 40 is the Y direction in FIG. 3 and FIG. 4, and the length direction of the electrical connector 40 is the X direction in FIG. 3 and FIG. 4.
  • the width direction dimension of the first connecting segment 431 in the electrical connector 40 is smaller than the length direction dimension of the first connecting segment 431 in the electrical connector 40 and/or the width direction dimension of the third connecting segment 433 in the electrical connector 40 is smaller than the length direction dimension of the third connecting segment 433 in the electrical connector 40.
  • the width direction dimension L3 of the first connecting section 431 at the electrical connector 40 is smaller than the length direction dimension L4 of the first connecting section 431 at the electrical connector 40, or the width direction dimension L5 of the third connecting section 433 at the electrical connector 40 is smaller than the length direction dimension L6 of the third connecting section 433 at the electrical connector 40, or the width direction dimension L3 of the first connecting section 431 at the electrical connector 40 is smaller than the length direction dimension L4 of the first connecting section 431 at the electrical connector 40 and the width direction dimension L5 of the third connecting section 433 at the electrical connector 40 is smaller than the length direction dimension L6 of the third connecting section 433 at the electrical connector 40.
  • width direction dimension of the first connecting section 431 at the electrical connector 40 is smaller than the length direction dimension of the first connecting section 431 at the electrical connector 40 and the width direction dimension of the third connecting section 433 at the electrical connector 40 is smaller than the length direction dimension of the third connecting section 433 at the electrical connector 40.
  • the elastic segment 43 can be further made elastic, thereby improving the telescopic performance of the electrical connector 40. Furthermore, by making the dimension of the third connecting segment 433 in the width direction of the electrical connector 40 smaller than the dimension of the third connecting segment 433 in the length direction of the electrical connector 40, and extending the third connecting segment 433 in the length direction of the electrical connector 40, the telescopic performance of the electrical connector 40 can be further improved, which is more conducive to the telescopic performance of the electrical connector 40.
  • the second connecting section 432 includes: a plurality of first sections 4321 and at least one second section 4322 , the plurality of first sections 4321 are spaced apart in sequence in the length direction of the electrical connector 40 , and a second section 4322 is connected between any two adjacent first sections 4321 .
  • the number of the first segments 4321 is greater than or equal to two, for example, the number of the first segments 4321 is two, three, four, etc., and the present application takes the example of two first segments 4321 and one second segment 4322.
  • the second segment 4322 is connected between the two first segments 4321, one of the two first segments 4321 is connected to the first connecting segment 431, and the other of the two first segments 4321 is connected to the third connecting segment 433.
  • the elastic segment 43 can be made elastic, and the electrical connector 40 can be made retractable, thereby reducing the risk that the electrical connector 40 cannot be retracted when the battery cell 20 moves.
  • At least one first segment 4321 has a width dimension of the electrical connector 40 that is greater than the length dimension of the first segment 4321 in the length direction of the electrical connector 40
  • a second segment 4322 has a width dimension of the electrical connector 40 that is less than the length dimension of the second segment 4322 in the length direction of the electrical connector 40.
  • the width dimension L7 of the plurality of first segments 4321 in the electrical connector 40 is greater than the length dimension L8 of the first segments 4321 in the electrical connector 40.
  • the width dimension L7 of the first segments 4321 in the electrical connector 40 is greater than the length dimension L8 of the first segments 4321 in the electrical connector 40, and the width dimension L9 of the second segments 4322 in the electrical connector 40 is smaller than the length dimension L10 of the second segments 4322 in the electrical connector 40
  • the plurality of first segments 4321 are extended in the width direction of the electrical connector 40
  • the second segments 4322 are extended in the length direction of the electrical connector 40
  • the elastic segment 43 can be made elastic, and the electrical connector 40 can be made retractable, thereby reducing the risk that the electrical connector 40 cannot be retracted when the battery cell 20 moves.
  • At least two first segments 4321 are parallel to each other.
  • the plurality of first segments 4321 extend in the width direction of the electrical connector 40.
  • the plurality of first segments 4321 are parallel to each other.
  • the second connecting segment 432 can be configured as a bent structure, which can improve the elasticity of the second connecting segment 432, thereby improving the elasticity of the electrical connector 40.
  • the second segment 4322 located at the outermost end is staggered with the adjacent first connecting segment 431 and/or third connecting segment 433 in the width direction of the electrical connector 40 .
  • the second section 4322 located at the end is staggered with the adjacent first connection section 431 or the third connection section 433 in the width direction of the electrical connector 40, or in the length direction of the electrical connector 40, the second section 4322 located at the end is staggered with the adjacent first connection section 431 and the third connection section 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.
  • the first connecting section 431 and the third connecting section 433 are staggered.
  • the elastic section 43 can be made elastic and have telescopic properties, which is beneficial to the deformation of the elastic section 43 and further prevents the electrical connector 40 from being disconnected from the corresponding electrode terminal.
  • the first connecting section 431 and the third connecting section 433 correspond to each other.
  • the example of the first segment 4321 being set to two and the second segment 4322 being set to one is used for explanation.
  • the first segment 4321 is set to two
  • a second segment 4322 is connected between the two first segments 4321.
  • the deformation amount of the elastic segment 43 is small, resulting in a small amount of telescopic capacity of the electrical connector 40.
  • the elastic section 43 may be configured as a spiral structure.
  • the elastic section 43 may be configured to be in a shape similar to a coil spring, so that the elastic section 43 has elasticity and is retractable, thereby making the electrical connector 40 retractable.
  • the first connection part 41, the second connection part 42 and the elastic segment 43 are integrally formed.
  • the connection strength between the first connection part 41, the second connection part 42 and the elastic segment 43 can be improved, and the elastic segment 43 can be prevented from separating from the first connection part 41 and the second connection part 42.
  • the elastic segment 43 has a plurality of notched grooves 434, and the plurality of notched grooves 434 penetrate the elastic segment 43 in the thickness direction of the elastic segment 43.
  • the plurality of notched grooves 434 are spaced apart in sequence in the length direction of the electrical connector 40, and at least one notched groove 434 extends to a side edge of the elastic segment 43 in the width direction of the electrical connector 40.
  • the electrical connector 40 includes a first connection portion 41, a second connection portion 42 and an elastic segment 43.
  • the first connection portion 41 and the second connection portion 42 are respectively connected to the electrode terminal 22 of the corresponding battery cell 20.
  • the elastic segment 43 is connected between the first connection portion 41 and the second connection portion 42.
  • the elastic segment 43 has a plurality of notches 434.
  • the plurality of notches 434 penetrate the elastic segment 43 in the thickness direction of the elastic segment 43.
  • the plurality of notches 434 are sequentially spaced apart 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.
  • the elastic segment 43 can be made elastic.
  • the elastic segment 43 is stretched and contracted, thereby reducing the risk of tearing or disconnection at the connection between the electrical connector 40 and the electrode terminal of the corresponding battery cell 20.
  • notch grooves 434 are provided on both sides of the elastic section 43 in the width direction of the electrical connector 40 .
  • both side edges of the elastic section 43 are provided with notch grooves 434 , and such a configuration enables the electrical connector 40 to be retractable and improves the working performance of the electrical connector 40 .
  • a dimension of each notch groove 434 in a width direction of the electrical connector 40 is greater than a dimension of the notch groove 434 in a length direction of the electrical connector 40 .
  • the notch groove 434 is constructed as a long strip groove.
  • the notch groove 434 can be set as a strip-shaped notch groove 434, which facilitates the deformation of the elastic section 43 when the first connecting part 41 and the second connecting part 42 are subjected to force.
  • the present application also provides an electric device 200 , which includes the battery 100 of the above embodiment.
  • the battery 100 can be used to provide electric energy for the electric device 200 .
  • the electrical connector 40 includes a first connection portion 41, a second connection portion 42 and an elastic segment 43.
  • the elastic segment 43 is connected between the first connection portion 41 and the second connection portion 42.
  • the elastic segment 43 includes a first connection segment 431, a second connection segment 432 and a third connection segment 433.
  • the first connection segment 431 is connected between the second connection segment 432 and the first connection portion 41
  • the third connection segment 433 is connected between the second connection segment 432 and the second connection portion 42.
  • the second connection segment 432 is extended in the width direction of the electrical connector 40
  • the first connection segment 431 and the third connection segment 433 are extended in the length direction of the electrical connector 40.
  • the first connection portion 41 and the second connection portion 42 are respectively connected to the electrode terminals 22 of the two battery cells 20 to achieve electrical connection between the two battery cells 20.
  • the electrical connector 40 is made elastic. When the volume of the battery cell 20 expands, the electrical connector 40 stretches, reducing the risk of tearing or disconnection at the connection between the electrical connector 40 and the corresponding electrode terminal 22, thereby improving the reliability of the battery 100.

Landscapes

  • Battery Mounting, Suspending (AREA)

Abstract

一种电池(100)以及用电装置(200)，电池(100)包括：多个电池单体(20)；电连接件(40)，电连接件(40)包括第一连接部(41)、第二连接部(42)和弹性段(43)，弹性段(43)连接在第一连接部(41)和第二连接部(42)之间，第一连接部(41)和第二连接部(42)分别与相应两个电池单体(20)的电极端子(22)连接以使两个电池单体(20)电连接。

Description

电池以及用电装置 技术领域
本申请涉及电池领域，尤其是涉及一种电池以及具有该电池的用电装置。
背景技术
相关技术中，现有电池的外壳内设置有多个电池单体，两个电池单体间通过电连接件实现电连接，由于电连接件长度固定，电池单体体积膨胀时，两个电池单体与电连接件的连接处容易撕裂或断开，降低了电池的可靠性。
发明内容
本申请旨在至少解决现有技术中存在的技术问题之一。为此，本申请实施例提出了一种电池，该电池的电连接件具有弹性，电池单体发生膨胀时，电连接件伸长，降低电连接件与相应电极端子连接处撕裂或断开风险，从而提升电池可靠性。
本申请实施例还提出了一种用电装置。
第一方面，本申请实施例提供一种电池，包括：
多个电池单体；
电连接件，电连接件包括第一连接部、第二连接部和弹性段，弹性段连接在第一连接部和第二连接部之间，第一连接部和第二连接部分别与相应电池单体的电极端子连接以使两个所述电池单体电连接。
在上述技术方案中，通过弹性段连接在第一连接部和第二连接部之间，当电池单体在宽度方向移动时，弹性段伸长，降低造成电连接件与电极端子的连接处撕裂或断开风险，提升电连接件与电极端子连接可靠性，提升电池工作可靠性。
在一些实施例中，弹性段具有第一连接段、第二连接段和第三连接段，第一连接段连接在第二连接段和第一连接部之间，第三连接段连接在第二连接段和第二连接部之间。
在上述技术方案中，通过设置第一连接段、第二连接段和第三连接段，可以使弹性段具有弹性，使弹性段可伸缩。
在一些实施例中，第二连接段在电连接件的宽度方向尺寸大于第二连接段在电连接件的长度方向尺寸。
在上述技术方案中，通过第二连接段在电连接件的宽度方向尺寸L1大于第二连接段在电连接件的长度方向尺寸L2，使第二连接段在电连接件的宽度方向延伸设置，使电连接件 可伸缩性能更好。
在一些实施例中，第一连接段在电连接件的宽度方向尺寸小于第一连接段在电连接件的长度方向尺寸和/或第三连接段在电连接件的宽度方向尺寸小于第三连接段在电连接件的长度方向尺寸。
在上述技术方案中，通过第一连接段在电连接件的宽度方向尺寸L3小于第一连接段在电连接件的长度方向尺寸L4，使第一连接段在电连接件的长度方向延伸设置，可以进一步使弹性段具有弹性，提升电连接件可伸缩性能，并且，通过第三连接段在电连接件的宽度方向尺寸L5小于第三连接段在电连接件的长度方向尺寸L6，使第三连接段在电连接件的长度方向延伸设置，进一步提升电连接件可伸缩性能，更有利于电连接件伸缩。
在一些实施例中，第二连接段包括：多个第一段体和至少一个第二段体，多个第一段体在电连接件的长度方向依次间隔开，任意相邻两个第一段体间连接有第二段体。
在上述技术方案中，通过设置多个第一段体和至少一个第二段体，能够使弹性段具有弹性，使电连接件具有可伸缩性能，降低电池单体移动时电连接件不能伸缩的情况发生风险。
在一些实施例中，至少一个第一段体在电连接件的宽度方向尺寸L7大于第一段体在电连接件的长度方向尺寸L8，第二段体在电连接件的宽度方向尺寸L9小于第二段体在电连接件的长度方向尺寸L10。
在上述技术方案中，通过至少一个第一段体在电连接件的宽度方向尺寸大于第一段体在电连接件的长度方向尺寸，第二段体在电连接件的宽度方向尺寸小于第二段体在电连接件的长度方向尺寸，能够使至少一个第一段体在电连接件的宽度方向延伸、第二段体在电连接件的长度方向延伸，可以使弹性段具有弹性，使电连接件具有可伸缩性能，降低电池单体移动时电连接件不能伸缩的情况发生风险。
在一些实施例中，至少两个第一段体相互平行。
在上述技术方案中，通过至少两个第一段体相互平行，能够使第二连接段构造为折弯结构，可以提升第二连接段弹性，从而提升电连接件弹性。
在一些实施例中，在电连接件的长度方向，位于最外端的第二段体与相邻的第一连接段和/或第三连接段在电连接件的宽度方向错开。
在上述技术方案中，通过位于最外端的第二段体与相邻的第一连接段和/或第三连接段在电连接件的宽度方向错开，能够进一步增加电连接件弹性，便于电连接件伸缩。
在一些实施例中，在电连接件的宽度方向，第一连接段和第三连接段错开。
在上述技术方案中，通过第一连接段和第三连接段错开，能够使弹性段具有弹性，使弹性段具有伸缩性能，有利于弹性段变形，进一步防止电连接件与相应的电极端子断开。
在一些实施例中，在电连接件的长度方向，第一连接段和第三连接段对应。
在上述技术方案中，通过使第一连接段和第三连接段在电连接件的长度方向对应设置，能够增加弹性段的变形量，可以提升电连接件的可伸缩性。
在一些实施例中，弹性段构造为螺旋形结构。
在上述技术方案中，弹性段可以设置为类似螺旋弹簧形状，使弹性段具有弹性，使弹性段可伸缩，从而使电连接件具有可伸缩性。
在一些实施例中，第一连接部、第二连接部和弹性段一体成型。
在上述技术方案中，通过使第一连接部、第二连接部和弹性段一体成型，能够提升第一连接部、第二连接部和弹性段间的连接强度，可以防止弹性段与第一连接部、第二连接部分离，并且，不需要单独生产电连接件，可以减少模具数量的开发，降低制造成本。
在一些实施例中，弹性段具有多个缺口槽，多个缺口槽在弹性段厚度方向贯穿弹性段，多个缺口槽在电连接件的长度方向依次间隔开，至少一个所述缺口槽在所述电连接件的宽度方向延伸至所述弹性段的一侧边缘。
在上述技术方案中，通过设置多个缺口槽，能够使弹性段具有弹性，电池单体移动时，通过弹性段伸缩，降低电连接件与相应电池单体的电极端子连接处撕裂或者断开风险。
在一些实施例中，每个缺口槽在电连接件的宽度方向尺寸大于缺口槽在电连接件的长度方向尺寸。
在上述技术方案中，通过每个缺口槽在电连接件的宽度方向尺寸大于缺口槽在电连接件的长度方向尺寸，能够将缺口槽设置为条形的缺口槽，第一连接部和第二连接部受力时，便于弹性段变形。
在一些实施例中，在电连接件的宽度方向，弹性段两侧均设置有缺口槽。
在上述技术方案中，通过至少两个缺口槽分别位于弹性段两侧，能够使电连接件具有可伸缩性，可以提升电连接件工作性能。
第二方面，本申请实施例还提供一种用电装置，包括上述的电池。
本申请的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。
附图说明
图1是根据本申请实施例的用电装置的示意图；
图2是根据本申请实施例的电池的示意图；
图3是根据本申请第一实施例的电连接件的示意图；
图4是根据本申请第二实施例的电连接件的示意图；
图5是根据本申请实施例的电池单体示意图。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
除非另有定义，本申请所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同；本申请中在申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请；本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。本申请的说明书和权利要求书或上述附图中的术语“第一”、“第二”等是用于区别不同对象，而不是用于描述特定顺序或主次关系。
在本申请中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“附接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
本申请中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本申请中字符“/”，一般表示前后关联对象是一种“或”的关系。
在本申请的实施例中，相同的附图标记表示相同的部件，并且为了简洁，在不同实施例中，省略对相同部件的详细说明。应理解，附图示出的本申请实施例中的各种部件的厚度、长宽等尺寸，以及集成装置的整体厚度、长宽等尺寸仅为示例性说明，而不应对本申请构成任何限定。
本申请中出现的“多个”指的是两个以上(包括两个)。
本申请的实施例所提到的电池100可以包括一个或多个电池单体20以提供更高的电压和容量的单一的物理模块。电池单体20有多个时，多个电池单体20通过电连接件40串联、并联或混联。
在一些实施例中，电池100可以为电池模块，电池单体20有多个时，多个电池单体20排列并固定形成一个电池模块。
在一些实施例中，电池100可以为电池包，电池包包括箱体和电池单体20，电池单体20或电池模块容纳于箱体中。
在一些实施例中，箱体可以作为车辆的底盘结构的一部分。例如，箱体的部分可以成为车辆的地板的至少一部分，或者，箱体的部分可以成为车辆的横梁和纵梁的至少一部分。
在一些实施例中，电池100可以为储能装置。储能装置包括储能集装箱、储能电柜等。
本申请实施例中，电池单体20可以为二次电池，二次电池是指在电池单体20放电后可通过充电的方式使活性材料激活而继续使用的电池单体20。
电池单体20可以为锂离子电池、钠离子电池、钠锂离子电池、锂金属电池、钠金属电池、锂硫电池、镁离子电池、镍氢电池、镍镉电池、铅蓄电池等，本申请实施例对此并不限定。
电池单体20一般包括电极组件。电极组件包括正极、负极以及隔离件。在电池单体20充放电过程中，活性离子(例如锂离子)在正极和负极之间往返嵌入和脱出。隔离件设置在正极和负极之间，可以起到防止正负极短路的作用，同时可以使活性离子通过。
在一些实施例中，正极可以为正极片，正极片可以包括正极集流体以及设置在正极集流体至少一个表面的正极活性材料。
作为示例，正极集流体具有在其自身厚度方向相对的两个表面，正极活性材料设置在正极集流体相对的两个表面的任意一者或两者上。
作为示例，正极集流体可采用金属箔片或复合集流体。例如，作为金属箔片，可采用银表面处理的铝或不锈钢、不锈钢、铜、铝、镍、炭精电极、碳、镍或钛等。复合集流体可包括高分子材料基层和金属层。复合集流体可通过将金属材料(铝、铝合金、镍、镍合金、钛、钛合金、银及银合金等)形成在高分子材料基材(如聚丙烯、聚对苯二甲酸乙二醇酯、聚对苯二甲酸丁二醇酯、聚苯乙烯、聚乙烯等的基材)上而形成。
作为示例，正极活性材料可包括以下材料中的至少一种：含锂磷酸盐、锂过渡金属氧化物及其各自的改性化合物。但本申请并不限定于这些材料，还可以使用其他可被用作电池正极活性材料的传统材料。
在一些实施例中，负极可以为负极片，负极片可以包括负极集流体。
作为示例，负极集流体可采用金属箔片或复合集流体。例如，作为金属箔片，可以采用银表面处理的铝或不锈钢、不锈钢、铜、铝、镍、炭精电极、用碳、镍或钛等。
在一些实施方式中，隔离件为隔离膜。本申请对隔离膜的种类没有特别的限制，可以选用任意公知的具有良好的化学稳定性和机械稳定性的多孔结构隔离膜。
作为示例，隔离膜的主要材质可选自玻璃纤维、无纺布、聚乙烯、聚丙烯及聚偏二氟乙烯，陶瓷中的至少一种。隔离膜可以是单层薄膜，也可以是多层复合薄膜，没有特别限制。 在隔离膜为多层复合薄膜时，各层的材料可以相同或不同，没有特别限制。隔离件可以是单独的一个部件位于正负极之间，也可以附着在正负极的表面。
在一些实施方式中，隔离件为固态电解质。固态电解质设于正极和负极之间，同时起到传输离子和隔离正负极的作用。
在一些实施方式中，电极组件为卷绕结构。正极片、负极片卷绕成卷绕结构。
在一些实施方式中，电极组件为叠片结构。
在一些实施方式中，电池单体20可以包括外壳。外壳用于封装电极组件及电解质等部件。外壳可以为钢壳、铝壳、塑料壳(如聚丙烯)、复合金属壳(如铜铝复合外壳)或铝塑膜等。
在一些实施方式中，外壳包括端盖和壳体，壳体设有开口，端盖封闭开口以形成用于容纳电极组件和电解质等物质的密闭空间。壳体可设有一个或多个开口。端盖也可设置一个或者多个。
在一些实施方式中，外壳上设置有至少一个电极端子，电极端子与电极组件的极耳电连接。电极端子可以与极耳直接连接，也可以通过转接部件与极耳间接连接。电极端子可以设置于端盖上，也可以设置在壳体上。
在一些实施方式中，外壳上设置有防爆阀。防爆阀用于泄放电池单体的内部压力。
作为示例，电池单体20可以为圆柱形电池单体20、棱柱电池单体20、软包电池单体20或其它形状的电池单体20，棱柱电池单体20包括方壳电池单体20、刀片形电池单体20、多棱柱电池，多棱柱电池例如为六棱柱电池等，本申请实施例没有特别的限制。请参见图4，本申请实施例以方壳电池单体20为例。
近些年，新能源汽车有了飞跃式的发展，在电动汽车领域，电池作为电动汽车的动力源，起着不可替代的重要作用。电池由箱体和容纳于箱体内的多个电池单体组成。其中，电池作为新能源汽车核心零部件不论在安全性方面，还是循环使用寿命上均有着较高的要求。
发明人发现，现有电池充电时，由于电连接件长度固定，电池单体体积膨胀时，两个电池单体与电连接件的连接处容易撕裂或断开，降低了电池的可靠性。
基于上述考虑，为了解决电池单体体积膨胀时电池单体与电连接件的连接处容易撕裂或断开问题，发明人经过深入研究，设计了一种电池，通过在电连接件40上设置弹性段43，使电连接件40具有弹性，电池单体20体积膨胀时，电连接件40伸长，降低电连接件40与相应电极端子22连接处撕裂或断开风险，从而提升电池100可靠性。
本申请实施例公开的电池可以但不限用于车辆、船舶或飞行器等用电装置中。有利于提升电池的适用范围。
本申请实施例提供一种使用电池作为电源的用电装置，用电装置可以为但不限于手机、 平板、笔记本电脑、电动玩具、电动工具、电瓶车、电动汽车、轮船、航天器等等。其中，电动玩具可以包括固定式或移动式的电动玩具，例如，游戏机、电动汽车玩具、电动轮船玩具和电动飞机玩具等等，航天器可以包括飞机、火箭、航天飞机和宇宙飞船等等。
以下实施例为了方便说明，以本申请一实施例的一种用电装置为车辆为例进行说明。
在本申请一些实施例中，电池不仅可以作为车辆的操作电源，还可以作为车辆的驱动电源，代替或部分地代替燃油或天然气为车辆提供驱动动力。
下面参考图1-图5描述根据本申请实施例的电池100。
如图2-图5所示，根据本申请实施例的电池100包括：电连接件40和多个电池单体20。电连接件40包括第一连接部41、第二连接部42和弹性段43，弹性段43连接在第一连接部41和第二连接部42之间，第一连接部41和第二连接部42分别与相应两个电池单体20的电极端子22连接以使两个电池单体20电连接。
作为示例，电池100还可以包括框架10，多个电池单体20均设于框架10内，多个电池单体20可以沿电池单体20的厚度方向堆叠设置。电池100为电池包时，框架10可以为电池100的箱体结构，或者框架10可以为电池100的箱体的一部分结构。电池100为电池模块(即电池模组)时，框架10可以为电池模块的第一端部限位件、第二端部限位件，或者框架10可以为电池模块的第一端部限位件、第二端部限位件以及侧板结构，侧板结构连接第一端部限位件以及第二端部限位件形成包围多个电池单体20的框架10。
其中，电连接件40为金属件，电连接件40连接在两个电池单体20之间，实现两个电池单体20间电连接。第一连接部41与电连接的两个电池单体20中的一个电池单体20的电极端子22连接，第二连接部42与电连接的两个电池单体20中的一个电池单体20的电极端子22连接，实现两个电池单体20间电连接。
作为示例，如图3和图4所示，第一连接部41具有第一连接区411，第一连接区411与电池单体20的电极端子22连接，例如：第一连接区411与电极端子22焊接，第二连接部42具有第二连接区421，第二连接区421与电池单体20的电极端子22连接，例如：第二连接区421与电极端子22焊接。由于电连接件40连接在两个电池单体20之间，当电池单体20膨胀时，如果电连接件40没有弹性，会造成电连接件40与电极端子的连接处撕裂或断开。
而在本申请中，通过在电连接件40上设置弹性段43，弹性段43连接在第一连接部41和第二连接部42之间，弹性段43具有一定弹性，当电池单体20膨胀时，弹性段43伸长，降低造成电连接件40与电极端子22的连接处撕裂或断开风险，提升电连接件40与电极端子22连接可靠性，提升电池100工作可靠性。当电池单体20未膨胀时，弹性段43恢复弹性形变。
根据本申请的一些实施例，如图3所示，弹性段43具有第一连接段431、第二连接段432和第三连接段433，第一连接段431连接在第二连接段432和第一连接部41之间，第三连接段433连接在第二连接段432和第二连接部42之间。
其中，第一连接段431连接在第二连接段432和第一连接部41之间后，以使第二连接段432和第一连接部41间隔开，第二连接段432和第一连接部41间形成间隙，第三连接段433连接在第二连接段432和第二连接部42之间后，以使第二连接段432和第二连接部42间隔开，第二连接段432和第二连接部42间形成间隙，可以使弹性段43具有弹性，使弹性段43可伸缩。
根据本申请的一些实施例，如图3所示，第二连接段432在电连接件40的宽度方向尺寸大于第二连接段432在电连接件40的长度方向尺寸。
其中，电连接件40的宽度方向为图3和图4中的Y方向，电连接件40的长度方向为图3和图4中的X方向。通过使第二连接段432在电连接件40的宽度方向尺寸L1大于第二连接段432在电连接件40的长度方向尺寸L2，使第二连接段432在电连接件40的宽度方向延伸设置，第一连接段431连接在第二连接段432和第一连接部41之间、第三连接段433连接在第二连接段432和第二连接部42之间后，可以使弹性段43具有弹性，使电连接件40具有可伸缩性能。
根据本申请的一些实施例，如图3所示，第一连接段431在电连接件40的宽度方向尺寸小于第一连接段431在电连接件40的长度方向尺寸和/或第三连接段433在电连接件40的宽度方向尺寸小于第三连接段433在电连接件40的长度方向尺寸。
其中，第一连接段431在电连接件40的宽度方向尺寸L3小于第一连接段431在电连接件40的长度方向尺寸L4或第三连接段433在电连接件40的宽度方向尺寸L5小于第三连接段433在电连接件40的长度方向尺寸L6，或者是第一连接段431在电连接件40的宽度方向尺寸L3小于第一连接段431在电连接件40的长度方向尺寸L4和第三连接段433在电连接件40的宽度方向尺寸L5小于第三连接段433在电连接件40的长度方向尺寸L6，本申请以第一连接段431在电连接件40的宽度方向尺寸小于第一连接段431在电连接件40的长度方向尺寸和第三连接段433在电连接件40的宽度方向尺寸小于第三连接段433在电连接件40的长度方向尺寸为例进行说明。
并且，通过使第一连接段431在电连接件40的宽度方向尺寸小于第一连接段431在电连接件40的长度方向尺寸，使第一连接段431在电连接件40的长度方向延伸设置，可以进一步使弹性段43具有弹性，提升电连接件40可伸缩性能，并且，通过第三连接段433在电连接件40的宽度方向尺寸小于第三连接段433在电连接件40的长度方向尺寸，使第三连接段433在电连接件40的长度方向延伸设置，进一步提升电连接件40可伸缩性能， 更有利于电连接件40伸缩。
根据本申请的一些实施例，如图4所示，第二连接段432包括：多个第一段体4321和至少一个第二段体4322，多个第一段体4321在电连接件40的长度方向依次间隔开，任意相邻两个第一段体4321间连接有第二段体4322。
其中，第一段体4321的设置数量大于等于两个，例如：第一段体4321的设置数量为两个、三个、四个等，本申请以第一段体4321设置为两个，第二段体4322设置为一个为例进行说明。第二段体4322连接在两个第一段体4321之间，两个第一段体4321中的一个与第一连接段431连接，两个第一段体4321中的另一个与第三连接段433连接。
在上述技术方案中，通过设置多个第一段体4321和至少一个第二段体4322，能够使弹性段43具有弹性，使电连接件40具有可伸缩性能，降低电池单体20移动时电连接件40不能伸缩的风险。
根据本申请的一些实施例，至少一个第一段体4321在电连接件40的宽度方向尺寸大于第一段体4321在电连接件40的长度方向尺寸，第二段体4322在电连接件40的宽度方向尺寸小于第二段体4322在电连接件40的长度方向尺寸。
其中，本申请以多个第一段体4321均在电连接件40的宽度方向尺寸L7大于第一段体4321在电连接件40的长度方向尺寸L8，通过使第一段体4321在电连接件40的宽度方向尺寸L7大于第一段体4321在电连接件40的长度方向尺寸L8，第二段体4322在电连接件40的宽度方向尺寸L9小于第二段体4322在电连接件40的长度方向尺寸L10，使多个第一段体4321均在电连接件40的宽度方向延伸，第二段体4322在电连接件40的长度方向延伸，可以使弹性段43具有弹性，使电连接件40具有可伸缩性能，降低电池单体20移动时电连接件40不能伸缩风险。
根据本申请的一些实施例，至少两个第一段体4321相互平行。
其中，多个第一段体4321均在电连接件40的宽度方向延伸，作为示例，多个第一段体4321均相互平行。通过至少两个第一段体4321相互平行，能够使第二连接段432构造为折弯结构，可以提升第二连接段432弹性，从而提升电连接件40弹性。
根据本申请的一些实施例，在电连接件40的长度方向，位于最外端的第二段体4322与相邻的第一连接段431和/或第三连接段433在电连接件40的宽度方向错开。
其中，在电连接件40的长度方向，位于端部的第二段体4322与相邻的第一连接段431或第三连接段433在电连接件40的宽度方向错开设置，或者在电连接件40的长度方向，位于端部的第二段体4322与相邻的第一连接段431和第三连接段433在电连接件40的宽度方向均错开设置。
在上述技术方案中，通过位于最外端的第二段体4322与相邻的第一连接段431和/或第 三连接段433在电连接件40的宽度方向错开，能够进一步增加电连接件40弹性，便于电连接件40伸缩。
根据本申请的一些实施例，在电连接件40的宽度方向，第一连接段431和第三连接段433错开。
通过第一连接段431和第三连接段433在电连接件40的宽度方向错开，能够使弹性段43具有弹性，使弹性段43具有伸缩性能，有利于弹性段43变形，进一步防止电连接件40与相应的电极端子断开。
根据本申请的一些实施例，如图4所示，在电连接件40的长度方向，第一连接段431和第三连接段433对应。
如图4所示，以第一段体4321设置为两个、第二段体4322设置为一个为例进行说明。当第一段体4321设置为两个时，两个第一段体4321间连接有一个第二段体4322，此时如果第一连接段431和第三连接段433在电连接件40的宽度方向错开，即第一连接段431和第三连接段433在电连接件40的长度方向未对应，弹性段43的变形量较少，导致电连接件40可伸缩量较少。而通过使第一连接段431和第三连接段433在电连接件40的长度方向对应设置，能够增加弹性段43的变形量，可以提升电连接件40的可伸缩性。
根据本申请的一些实施例，弹性段43可以构造为螺旋形结构。
在该实施例中，弹性段43可以设置为类似螺旋弹簧形状，使弹性段43具有弹性，使弹性段43可伸缩，从而使电连接件40具有可伸缩性。
根据本申请的一些实施例，第一连接部41、第二连接部42和弹性段43一体成型，在该技术方案中，通过使第一连接部41、第二连接部42和弹性段43一体成型，能够提升第一连接部41、第二连接部42和弹性段43间的连接强度，可以防止弹性段43与第一连接部41、第二连接部42分离，并且，不需要单独生产电连接件40，可以减少模具数量的开发，降低制造成本。
根据本申请的一些实施例，如图3和图4所示，弹性段43具有多个缺口槽434，多个缺口槽434在弹性段43厚度方向贯穿弹性段43，多个缺口槽434在电连接件40的长度方向依次间隔开，至少一个缺口槽434在电连接件40的宽度方向延伸至弹性段43的一侧边缘。
其中，如图3和图4所示，电连接件40包括第一连接部41、第二连接部42和弹性段43，第一连接部41和第二连接部42分别与相应电池单体20的电极端子22连接，弹性段43连接在第一连接部41和第二连接部42之间，弹性段43具有多个缺口槽434，多个缺口槽434在弹性段43厚度方向贯穿弹性段43，多个缺口槽434在电连接件40的长度方向依次间隔开，至少一个缺口槽434在电连接件40的宽度方向延伸至弹性段43的一侧边缘。 其中，通过设置多个缺口槽434，能够使弹性段43具有弹性，电池单体20移动时，通过弹性段43伸缩，降低电连接件40与相应电池单体20的电极端子连接处撕裂或者断开风险。
根据本申请的一些实施例，在电连接件40的宽度方向，弹性段43两侧均设置有缺口槽434。
其中，如图3和图4所示，在电连接件40的宽度方向，弹性段43的两侧边缘均设置有缺口槽434，如此设置能够使电连接件40具有可伸缩性，可以提升电连接件40工作性能。
根据本申请的一些实施例，每个缺口槽434在电连接件40的宽度方向尺寸大于缺口槽434在电连接件40的长度方向尺寸。
通过缺口槽434在电连接件40的宽度方向尺寸大于缺口槽434在电连接件40的长度方向尺寸，使缺口槽434构造为长条形槽，能够将缺口槽434设置为条形的缺口槽434，第一连接部41和第二连接部42受力时，便于弹性段43变形。
本申请还提供了一种用电装置200，用电装置200包括上述实施例的电池100，电池100可以用于为用电装置200提供电能。
下面参考图3描述本申请电连接件40的一些实施例。
电连接件40包括第一连接部41、第二连接部42和弹性段43，弹性段43连接在第一连接部41和第二连接部42之间，弹性段43包括第一连接段431、第二连接段432和第三连接段433，第一连接段431连接在第二连接段432和第一连接部41之间，第三连接段433连接在第二连接段432和第二连接部42之间，第二连接段432在电连接件40的宽度方向延伸设置，第一连接段431、第三连接段433在电连接件40的长度方向延伸设置。第一连接部41和第二连接部42分别连接两个电池单体20的电极端子22，以实现两个电池单体20间电连接。通过在电连接件40上设置弹性段43，使电连接件40具有弹性，电池单体20体积膨胀时，电连接件40伸长，降低电连接件40与相应电极端子22连接处撕裂或断开风险，从而提升电池100可靠性。
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互结合。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管已经示出和描述了本申请的实施例，本领域的普通技术人员可以理解：在不脱离本申请的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本申请的范围由权利要求及其等同物限定。

Claims (16)

  1. 一种电池，包括：
    多个电池单体；
    电连接件，所述电连接件包括第一连接部、第二连接部和弹性段，所述弹性段连接在所述第一连接部和所述第二连接部之间，所述第一连接部和所述第二连接部分别与相应两个所述电池单体的电极端子连接以使两个所述电池单体电连接。
  2. 根据权利要求1所述的电池，其中，所述弹性段具有第一连接段、第二连接段和第三连接段，所述第一连接段连接在所述第二连接段和所述第一连接部之间，所述第三连接段连接在所述第二连接段和所述第二连接部之间。
  3. 根据权利要求2所述的电池，其中，所述第二连接段在所述电连接件的宽度方向尺寸大于所述第二连接段在所述电连接件的长度方向尺寸。
  4. 根据权利要求3所述的电池，其中，所述第一连接段在所述电连接件的宽度方向尺寸小于所述第一连接段在所述电连接件的长度方向尺寸，和/或，所述第三连接段在所述电连接件的宽度方向尺寸小于所述第三连接段在所述电连接件的长度方向尺寸。
  5. 根据权利要求2-4任一项所述的电池，其中，所述第二连接段包括：多个第一段体和至少一个第二段体，多个所述第一段体在所述电连接件的长度方向依次间隔开，任意相邻两个所述第一段体间连接有所述第二段体。
  6. 根据权利要求5所述的电池，其中，至少一个所述第一段体在所述电连接件的宽度方向尺寸大于所述第一段体在所述电连接件的长度方向尺寸，所述第二段体在所述电连接件的宽度方向尺寸小于所述第二段体在所述电连接件的长度方向尺寸。
  7. 根据权利要求5或6所述的电池，其中，至少两个所述第一段体相互平行。
  8. 根据权利要求5-7中任一项所述的电池，其中，在所述电连接件的长度方向，位于最外端的所述第二段体与相邻的所述第一连接段和/或所述第三连接段在所述电连接件的宽度方向错开。
  9. 根据权利要求2-8中任一项所述的电池，其中，在所述电连接件的宽度方向，所述第一连接段和所述第三连接段错开。
  10. 根据权利要求2-8中任一项所述的电池，其中，在所述电连接件的长度方向，所述第一连接段和所述第三连接段对应。
  11. 根据权利要求1-10任一项所述的电池，其中，所述弹性段构造为螺旋形结构。
  12. 根据权利要求1-11中任一项所述的电池，其中，所述第一连接部、所述第二连接部和所述弹性段一体成型。
  13. 根据权利要求1-12中任一项所述的电池，其中，所述弹性段具有多个缺口槽，多个所述缺口槽在所述弹性段厚度方向贯穿所述弹性段，多个所述缺口槽在所述电连接件的长度方向依次间隔开，至少一个所述缺口槽在所述电连接件的宽度方向延伸至所述弹性段的一侧边缘。
  14. 根据权利要求13所述的电池，其中，每个所述缺口槽在所述电连接件的宽度方向尺寸大于所述缺口槽在所述电连接件的长度方向尺寸。
  15. 根据权利要求13或14所述的电池，其中，在所述电连接件的宽度方向，所述弹性段两侧均设置有所述缺口槽。
  16. 一种用电装置，其中，包括根据权利要求1-15中任一项所述的电池。
PCT/CN2022/140085 2022-12-19 2022-12-19 电池以及用电装置 WO2024130499A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2022/140085 WO2024130499A1 (zh) 2022-12-19 2022-12-19 电池以及用电装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2022/140085 WO2024130499A1 (zh) 2022-12-19 2022-12-19 电池以及用电装置

Publications (1)

Publication Number Publication Date
WO2024130499A1 true WO2024130499A1 (zh) 2024-06-27

Family

ID=91587246

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/140085 WO2024130499A1 (zh) 2022-12-19 2022-12-19 电池以及用电装置

Country Status (1)

Country Link
WO (1) WO2024130499A1 (zh)

Similar Documents

Publication Publication Date Title
KR101379957B1 (ko) 단차를 갖는 전극 조립체 및 이를 포함하는 전지셀, 전지팩 및 디바이스
EP2779269B1 (en) Battery cell having a novel structure
US11757161B2 (en) Battery cell, battery and electricity consuming device
CN215989120U (zh) 方形电池单体、电池及用电设备
US9263761B2 (en) Electrode assembly and rechargeable battery having the same
KR20180058370A (ko) 전극판의 경계 부위에 절연 보강부가 형성된 분리막을 포함하는 전극조립체
KR102117076B1 (ko) 전지모듈의 어셈블리
CN217361642U (zh) 电极组件、电池单体、电池和用电设备
JPH10261440A (ja) リチウム二次電池とその製造方法および電池システム
CN115699445B (zh) 电池单体、电池、用电设备及电池单体的制造方法和设备
JP3543572B2 (ja) 二次電池
US20230223669A1 (en) Battery cell, battery, electrical device, and method and device for manufacturing battery cell
CN112020791A (zh) 单元电芯及其制造方法
WO2024130499A1 (zh) 电池以及用电装置
US7166387B2 (en) Thin battery with an electrode having a higher strength base portion than a tip portion
CN114188503B (zh) 电池组
WO2024138684A1 (zh) 电池及用电装置
CN110931879A (zh) 一种新型柱状锂离子电池
CN221262653U (zh) 电池单体、电池及用电装置
CN219226369U (zh) 电极组件、电池单体、电池以及用电装置
WO2024130500A1 (zh) 电池以及用电装置
CN220774656U (zh) 连接构件、电池单体、电池、用电装置和连接件
CN220155706U (zh) 连接构件、电池单体、电池和用电装置
CN219303899U (zh) 电池单体、电池及用电设备
CN220121974U (zh) 电池单体、电池及用电装置