Electrical connector and manufacturing method therefor, battery, electrical apparatus, and energy storage apparatus

Abstract

Provided are an electrical connector (400) and a manufacturing method therefor, a battery (100), an electrical apparatus, and an energy storage apparatus. The electrical connector (400) is used for the battery (100). The electrical connector (400) comprises at least two separators (1), each separator (1) having an electrical circuit (2) integrated thereon, and a connecting end (2a) of each electrical circuit (2) exposing the separator (1). The separators (1) are connected to each other, and the electrical circuits (2) integrated on the separators (1) are insulated from each other.

Description

Electrical connector and manufacturing method thereof, battery, electrical device and energy storage device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure is based on Chinese patent application number 202410405270.4, application date April 3, 2024, and invention name “Electrical connector and manufacturing method thereof, battery, electrical device and energy storage device”, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated into the present disclosure as a reference. Technical Field

[0003] The present disclosure relates to the field of battery technology, and in particular to an electrical connector and a manufacturing method thereof, a battery, an electrical device, and an energy storage device. Background Art

[0004] New energy batteries are being used more and more widely in life and industry. For example, new energy vehicles equipped with batteries have been widely used. In addition, batteries are also being increasingly used in energy storage fields.

[0005] The high-voltage power distribution unit (PDU) is a control unit that distributes battery energy, providing high-voltage distribution, overload protection, and short-circuit protection. A cluttered wiring harness within the PDU can negatively impact battery performance. Therefore, reducing wiring harness interference is a key research topic in the industry. Summary of the Invention

[0006] In order to solve the above technical problems, the present application provides an electrical connector that can reduce wiring harness interference and has a compact structure, a manufacturing method of the electrical connector, a battery, an electrical device and an energy storage device.

[0007] The present disclosure is achieved through the following technical solutions.

[0008] A first aspect of the present disclosure provides an electrical connector for a battery, comprising: at least two isolators, each of which is integrated with an electrical circuit, and the connection ends of each electrical circuit are exposed from the isolator; the isolators are connected to each other, and the electrical circuits integrated on each isolator are insulated from each other.

[0009] Since the electrical circuits of the electrical connector are integrated on the isolating part and are insulated from each other, each electrical circuit can be relatively well bound on the isolating part, and is less likely to interfere with each other or other structural parts, thereby improving the routing regularity and connection reliability of the electrical connector and reducing the risk of short circuits caused by line interference.

[0010] In addition, since the electrical circuits are all integrated on the isolating parts, the overall structure of the electrical connector can be made more compact, thereby reducing the size of the electrical connector and improving space utilization. Moreover, the position of each electrical circuit is relatively fixed and not easy to move. Therefore, the position of the connection end of the electrical circuit exposed from the isolating parts is also relatively fixed, so that the position of the electrical component connected to the connection end each time is relatively fixed, which can reduce the possibility of changes in the plug-in position of the electrical component and thus the occurrence of adverse situations of mutual plugging.

[0011] In some embodiments, two adjacent isolators are formed as an integral piece; or two adjacent isolators are connected into one piece.

[0012] Thus, adjacent spacers can be formed into a single piece, reducing the number of parts and lowering production costs. Alternatively, adjacent spacers can be connected together to improve connection reliability, reduce the possibility of spacers moving between each other, causing electrical circuit movement and thus wiring interference, and improve reliability.

[0013] In some embodiments, the isolation member includes a first isolation member, a second isolation member, and a third isolation member; the electrical circuit includes a first electrical circuit, a second electrical circuit, and a third electrical circuit; the first electrical circuit is integrated in the first isolation member, the second electrical circuit is integrated in the second isolation member, and the third electrical circuit is integrated in the third isolation member.

[0014] Thus, different electrical circuits are integrated on different isolators, further reducing the possibility of interference between the different electrical circuits and improving the regularity of the wiring of the electrical connector. Furthermore, the insulation performance between the different electrical circuits is improved, reducing the risk of short circuits or signal interference caused by contact between different electrical circuits, and improving the reliability and stability of the electrical connector.

[0015] In some embodiments, at least one of the first electrical circuit, the second electrical circuit, and the third electrical circuit is a low-voltage control circuit, and the remaining electrical circuits are high-voltage sampling circuits.

[0016] Thus, different types of electrical circuits can be selected and set according to actual conditions. The various electrical circuits can be insulated from each other and are less likely to interfere with each other, which can effectively improve the reliability of the electrical connector.

[0017] In some embodiments, each electrical loop includes a metal bus.

[0018] This allows the use of a metal busbar instead of a wiring harness, simplifying the electrical circuit structure and further reducing the possibility of interference between the wiring harness and structural components. Furthermore, the position of the metal busbar's connection end extending beyond the isolation element is less likely to change, further reducing the possibility of incorrectly inserting electrical components and improving the reliability of the electrical connector.

[0019] In some embodiments, the metal bus comprises a copper bus.

[0020] Copper busbars conduct electricity more easily and have lower impedance, resulting in better electrical connection performance. Furthermore, copper's excellent plasticity allows for easy processing into various connector shapes to suit different connection requirements. Furthermore, copper's excellent corrosion resistance, effectively resisting oxidation and rust, ensures a longer lifespan, greater reliability, and greater stability for the connector ends.

[0021] In some embodiments, the connection end of the electrical circuit extends along the circumferential direction of the isolation member and is exposed from the isolation member.

[0022] Thus, the space along the circumferential direction of the isolating member can be fully utilized to arrange the connection end of the electrical connector for connection with the electrical component or the circuit board, thereby improving space utilization.

[0023] In some embodiments, a through hole is formed on the isolation member; the connection end of the electrical circuit passes through the through hole and is exposed from the isolation member.

[0024] Thus, the space along the thickness direction of the isolating member can be fully utilized to arrange the connection end of the electrical connector for connecting to the electrical component or the circuit board, thereby further improving the space utilization rate.

[0025] In some embodiments, the spacers are stacked and connected by fixed connectors.

[0026] This allows the electrical circuits integrated into each spacer to be stacked and separated by the spacers, preventing crossover and further reducing the possibility of wiring interference. Furthermore, the stacked arrangement makes the electrical connector structure more compact, further reducing its size and occupied space, and improving space utilization.

[0027] In some embodiments, the fixed connection comprises a heat staking connection.

[0028] Using hot riveting allows for rapid connection between isolators, resulting in high assembly efficiency. Furthermore, hot riveting provides greater connection strength and stability, making it less likely for isolators to fall off or become damaged. Furthermore, the hot riveting process creates a smooth surface, leaving no visible marks or blemishes. This reduces the likelihood of damage to the electrical connector or other components from collision or friction during use.

[0029] In some embodiments, the material of the isolation element includes plastic.

[0030] Plastic components have excellent insulation properties, which insulate electrical circuits from each other and improve the reliability of electrical connectors. Furthermore, plastic components are relatively low in cost and have stable chemical properties, which can extend the service life of electrical connectors and reduce production costs.

[0031] A second aspect of the present disclosure provides a method for manufacturing an electrical connector, the manufacturing method comprising: making at least two isolators through an injection molding process; making at least two metal rows through a stamping process; arranging each metal row on each isolator, and making the connection end of each metal row exposed from the isolator; stacking the isolators with the metal rows on top of each other, and connecting adjacent isolators through fixed connectors.

[0032] Thus, the electrical connector can be manufactured in a simple and convenient way, the wiring harness of the electrical connector can be eliminated, and the wiring harness interference problem of the electrical connector can be effectively reduced. Moreover, the structure of the electrical connector is compact, which can effectively improve space utilization.

[0033] The third aspect of the present disclosure provides a battery, comprising: a high-voltage distribution box; a circuit board located in the high-voltage distribution box; a relay located in the high-voltage distribution box; and at least one electrical connector according to the first aspect of the present disclosure, the electrical connector being configured to connect the circuit board and the relay through a connecting end.

[0034] The high-voltage distribution box of the battery in the embodiment of the present disclosure includes electrical connectors that are not prone to wiring harness interference and have a compact structure. Therefore, it can effectively improve the stability of the high-voltage distribution box and improve the space utilization of the high-voltage distribution box, thereby improving the reliability and stability of the battery.

[0035] A fourth aspect of the present disclosure provides an electrical device, the electrical device comprising the battery according to the first aspect of the present disclosure for providing electrical energy.

[0036] The electrical device provided by the embodiment of the present disclosure uses the battery with good performance as described above, thereby reducing the time spent on maintenance and reducing the risk of short circuits and the like.

[0037] A fifth aspect of the present disclosure provides an energy storage device, which includes the battery according to the first aspect of the present disclosure for storing or providing electrical energy.

[0038] The energy storage device provided by the embodiment of the present disclosure uses the battery with good performance as described above, thereby reducing the time spent on maintenance and reducing the risk of short circuit.

[0039] Effects of the Invention

[0040] Through the present disclosure, the interference of wire harnesses of the electrical connector can be reduced, thereby reducing the risk of short circuit of the electrical connector, and making the structure of the electrical connector more compact, thereby effectively improving space utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present disclosure. The same reference numerals are used throughout the drawings to denote the same components. In the drawings:

[0042] FIG1 is a schematic structural diagram of a vehicle provided by some embodiments of the present disclosure;

[0043] FIG2 is a perspective exploded schematic diagram of a battery provided by some embodiments of the present disclosure;

[0044] FIG3 is a schematic diagram of the three-dimensional structure of an electrical connector provided in some embodiments of the present disclosure;

[0045] FIG4 is a perspective exploded schematic diagram of an electrical connector provided by some embodiments of the present disclosure;

[0046] FIG5 is a schematic diagram of a three-dimensional structure of an isolation member provided in some embodiments of the present disclosure;

[0047] FIG6 is a schematic flow chart of a method for manufacturing an electrical connector according to some embodiments of the present disclosure.

[0048] Explanation of the reference numerals: 1-isolator; 1a-groove; 1b-through hole; 11-first isolator; 12-second isolator; 13-third isolator; 2-electrical circuit; 2a-connecting end; 2b-housing; 2c-connecting terminal; 21-first electrical circuit; 22-second electrical circuit; 23-third electrical circuit; 3-fixed connector; 31-thermal rivet column; 32-through hole; 100-battery; 101-casing; 101a-cover; 101b-bottom plate; 102-battery cell; 103-high-voltage distribution box; 200-controller; 300-motor; 400-electrical connector; 1000-vehicle. DETAILED DESCRIPTION

[0049] The following embodiments of the technical solution of the present disclosure are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present disclosure and are therefore only examples and are not intended to limit the scope of protection of the present disclosure.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this disclosure; the terms "including" and "having" and any variations thereof in this disclosure are intended to cover non-exclusive inclusions.

[0051] In the description of the embodiments of the present disclosure, technical terms such as "first," "second," and "third" are used solely to distinguish different objects and should not be understood to indicate or imply relative importance or to implicitly specify the quantity, specific order, or primary and secondary relationship of the technical features indicated. In the description of the embodiments of the present disclosure, "plurality" means more than two, unless otherwise specifically defined.

[0052] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present disclosure. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0053] In the description of the embodiments of the present disclosure, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0054] In the description of the embodiments of the present disclosure, the orientations or positional relationships indicated by technical terms such as "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present disclosure.

[0055] In the description of the embodiments of the present disclosure, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal connectivity between two components or interaction between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present disclosure based on specific circumstances.

[0056] In the description of the embodiments of the present disclosure, unless otherwise clearly specified and limited, the technical term "contact" should be understood in a broad sense, and can be direct contact, contact through an intermediate medium layer, contact with essentially no interaction force between the two contacting parties, or contact with interaction force between the two contacting parties.

[0057] Hereinafter, the present disclosure will be described in detail.

[0058] Currently, new energy batteries are increasingly being used in everyday life and industry. They are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric cars, as well as in a variety of fields such as aerospace. As the application of power batteries continues to expand, market demand is also growing.

[0059] The high-voltage power distribution unit (PDU) is a control unit that distributes battery energy and is used to distribute high voltage, provide overload protection, and provide short-circuit protection for the battery.

[0060] In related art, high-voltage distribution boxes typically contain several wiring harnesses for connecting relays and electrical components integrated on circuit boards. This leads to complex wiring and the potential for interference between wiring harnesses and between wiring harnesses and structural components within the high-voltage distribution box, posing a risk of short circuits. Furthermore, the wiring harnesses occupy a large space, resulting in low space utilization and hindering the integration and miniaturization of high-voltage distribution boxes.

[0061] Furthermore, electrical circuits are prone to mutual interference and are difficult to maintain. Wiring operations are prone to connection errors and harness wear. Furthermore, manual assembly is often required, preventing automated assembly and resulting in low production efficiency.

[0062] This disclosure addresses the problems existing in the aforementioned related art and proposes an electrical connector for a battery. The electrical connector comprises at least two spacers, each of which has an integrated electrical circuit, with the connection ends of each electrical circuit protruding from the spacer. The spacers are interconnected, and the electrical circuits integrated into each spacer are insulated from each other.

[0063] Since the electrical circuits of the electrical connector are integrated on the isolating part and are insulated from each other, each electrical circuit can be relatively well bound on the isolating part, and is less likely to interfere with each other or other structural parts, thereby improving the routing regularity and connection reliability of the electrical connector and reducing the risk of short circuit caused by line interference.

[0064] In addition, since the electrical circuits are all integrated on the isolating parts, the overall structure of the electrical connector can be made more compact, thereby reducing the size of the electrical connector and improving space utilization. Moreover, the position of each electrical circuit is relatively fixed and not easy to move. Therefore, the position of the connection end of the electrical circuit exposed from the isolating parts is also relatively fixed, so that the position of the electrical component connected to the connection end each time is relatively fixed, which can reduce the possibility of changes in the plug-in position of the electrical component and thus the occurrence of adverse situations of mutual plugging.

[0065] At the same time, the assembly of electrical connectors is also easier, more conducive to automated assembly, and can effectively improve production efficiency.

[0066] The electrical connectors in the embodiments of the present disclosure can be used in batteries, for example, in a high-voltage distribution box of a battery, to connect various electrical components in the high-voltage distribution box. Of course, those skilled in the art will appreciate that the electrical connectors provided in the embodiments of the present disclosure are not limited to use in a high-voltage distribution box of a battery, but can also be used to connect other components in other electrical devices that require electrical connections.

[0067] The battery in the embodiments of the present disclosure can be used, but is not limited to, in energy storage power supply systems, electrical devices such as vehicles, ships or aircraft, as well as energy storage devices such as energy storage containers and energy storage cabinets.

[0068] The embodiments of the present disclosure provide an electrical device including the above-mentioned battery for providing electrical energy, and the electrical device includes, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery-powered vehicle, an electric car, a ship, a spacecraft, etc. The electric toy may include a fixed or mobile electric toy, such as 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.

[0069] In the following embodiments, for the convenience of description, the electric device of one embodiment of the present disclosure is taken as an example of a vehicle 1000. The following description is made with reference to the accompanying drawings.

[0070] FIG1 is a schematic structural diagram of a vehicle 1000 provided in some embodiments of the present disclosure. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. As shown in FIG1 , a battery 100 is provided inside the vehicle 1000. The battery 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery 100 may be used to power the vehicle 1000. For example, the battery 100 may serve as an operating power source for the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to power the motor 300, for example, for starting, navigating and operating power requirements of the vehicle 1000 during driving.

[0071] In some embodiments of the present disclosure, the battery 100 can serve not only as an operating power source for the vehicle 1000 , but also as a driving power source for the vehicle 1000 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000 .

[0072] Figure 2 is a schematic exploded perspective view of a battery 100 provided in an embodiment of the present disclosure. As shown in Figure 2, the battery 100 comprises a housing 101, at least one battery cell 102, and a high-voltage distribution box 103. The housing 101 comprises a cover 101a and a bottom plate 101b. The cover 101a covers the bottom plate 101b, thereby forming a storage space for the battery 100 between the bottom plate 101b and the cover 101a.

[0073] In the battery 100, there may be multiple battery cells 102, and the multiple battery cells 102 may be connected in series, in parallel, or in a hybrid connection. A hybrid connection refers to a combination of series and parallel connections among the multiple battery cells 102. The multiple battery cells 102 may be directly connected in series, in parallel, or in a hybrid connection, and then the entire battery cell 102 may be placed in the storage space formed by the base plate 101b and the cover 101a. Of course, the battery cells 102 may also be formed by first connecting multiple battery cells 102 in series, in parallel, or in a hybrid connection to form a battery module, and then the multiple battery modules may be connected in series, in parallel, or in a hybrid connection to form an entire battery cell, and then accommodated in the storage space formed by the base plate 101b and the cover 101a. The battery 100 may also include other structures. For example, the battery 100 may also include a busbar component for electrically connecting the multiple battery cells 102.

[0074] The high-voltage distribution box 103 is a control unit for distributing battery energy, and is used to perform high-voltage distribution, overload protection, and short-circuit protection on the battery 100 .

[0075] The battery cell 102 refers to a basic unit that can realize the mutual conversion between chemical energy and electrical energy, and can be used to make a battery or a battery pack, thereby being used to supply power to an electrical device or an energy storage device.

[0076] The battery cell 102 may be a secondary battery cell. A secondary battery cell refers to a battery cell that can be recharged to activate active materials after being discharged and can be used continuously.

[0077] The battery cell 102 can be a lithium-ion battery cell, a sodium-ion battery cell, a sodium-lithium-ion battery cell, a lithium metal battery cell, a sodium metal battery cell, a lithium-sulfur battery cell, a magnesium-ion battery cell, a nickel-hydrogen battery cell, a nickel-cadmium battery cell, a lead-acid battery cell, etc., and the embodiments of the present disclosure are not limited to this.

[0078] The battery cell 102 may be a soft-pack battery cell, a square-shell battery cell, a cylindrical battery cell, or the like.

[0079] Although not shown, the battery cell 102 includes an electrode assembly. The electrode assembly is generally stacked along the thickness direction of the battery cell 102. The electrode assembly is a component in the battery cell 102 where an electrochemical reaction occurs.

[0080] The electrode assembly includes a positive electrode sheet, a negative electrode sheet, and a separator. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are inserted and removed between the positive and negative electrode sheets. The separator is placed between the positive and negative electrode sheets to prevent short circuits between the positive and negative electrodes while allowing the active ions to pass through.

[0081] In some embodiments, the positive electrode may be a positive electrode sheet, which 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.

[0082] As an example, the positive electrode current collector has two surfaces facing each other in its thickness direction, and the positive electrode active material is provided on either or both of the two facing surfaces of the positive electrode current collector.

[0083] As an example, the positive electrode current collector may be a metal foil or a composite current collector. For example, as the metal foil, aluminum or stainless steel with a silver surface treatment, stainless steel, copper, aluminum, nickel or titanium, etc. may be used. The composite current collector may include a polymer material base layer 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.).

[0084] As an example, 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. However, the present disclosure is not limited to these materials, and other traditional materials that can be used as battery positive electrode active materials may also be used. These positive electrode active materials may be used alone or in combination of two or more. Examples of lithium-containing phosphates may include, but are not limited to, at least one of lithium iron phosphate (such as LiFePO4 (also referred to as LFP)), a composite material of lithium iron phosphate and carbon, lithium manganese phosphate (such as LiMnPO4), a composite material of lithium manganese phosphate and carbon, lithium iron manganese phosphate, and a composite material of lithium iron manganese phosphate and carbon.

[0085] In some embodiments, a positive electrode may be a metal foam. The metal foam may be nickel foam, copper foam, aluminum foam, or alloy foam, among others. When a metal foam is used as the positive electrode, the surface of the metal foam may or may not be provided with a positive electrode active material. For example, a lithium source material, potassium metal, or sodium metal may be filled and / or deposited within the metal foam, where the lithium source material is lithium metal and / or a lithium-rich material.

[0086] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0087] As an example, the negative electrode current collector may be a metal foil, a metal foam, or a composite current collector. For example, as the metal foil, aluminum or stainless steel with a silver surface treatment, stainless steel, copper, aluminum, nickel, or titanium, etc., may be used. The composite current collector may include a polymer material base layer and a metal layer. The metal foam may be nickel foam, copper foam, aluminum foam, or alloy foam, etc. The composite current collector may be formed by forming a metal material (copper, copper 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.). In some embodiments, the material of the positive electrode current collector may be aluminum, and the material of the negative electrode current collector may be copper.

[0088] In some embodiments, the electrode assembly further includes a separator disposed between the positive electrode and the negative electrode.

[0089] In some embodiments, the separator is a separator. The present disclosure 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.

[0090] As an example, the main material of the isolation membrane can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramics.

[0091] In some embodiments, the separator is a solid electrolyte, which is disposed between the positive electrode and the negative electrode and serves to transport ions and isolate the positive and negative electrodes.

[0092] In some embodiments, the electrode assembly is a wound structure, wherein the positive electrode sheet and the negative electrode sheet are wound into the wound structure.

[0093] In some embodiments, the electrode assembly is a laminate structure.

[0094] As an example, multiple positive electrode sheets and multiple negative electrode sheets can be provided respectively, and the multiple positive electrode sheets and the multiple negative electrode sheets can be alternately stacked.

[0095] As an example, a plurality of positive electrode sheets may be provided, and the negative electrode sheet may be folded to form a plurality of stacked folded segments, with a positive electrode sheet being sandwiched between adjacent folded segments.

[0096] As an example, both the positive electrode sheet and the negative electrode sheet are folded to form a plurality of stacked folded segments.

[0097] As an example, a plurality of separators may be provided, each of which is disposed between any adjacent positive electrode sheets or negative electrode sheets.

[0098] As an example, the separator may be provided continuously, and may be provided between any adjacent positive electrode sheets or negative electrode sheets by folding or winding.

[0099] In some embodiments, the shape of the electrode assembly can be cylindrical, flat, or polygonal.

[0100] In some embodiments, the battery cell 102 further includes an electrolyte, which acts as a conductor of ions between the positive and negative electrodes. The present disclosure does not specifically limit the type of electrolyte, and the electrolyte may be selected based on needs. The electrolyte may be liquid, gel, or solid.

[0101] In some embodiments, the electrode assembly is provided with tabs that can conduct current from the electrode assembly. The tabs include a positive tab and a negative tab.

[0102] In some embodiments, the battery cell 102 may include a housing. The housing is used to encapsulate components such as the electrode assembly and electrolyte. The housing may be made of steel, aluminum, plastic (e.g., polypropylene), composite metal (e.g., copper-aluminum composite), or aluminum-plastic film. The housing of a soft-pack battery cell is soft.

[0103] Hereinafter, some embodiments of the present disclosure will be described in detail with reference to FIG. 3 to FIG. 6 .

[0104] Figure 3 is a schematic diagram of the three-dimensional structure of an electrical connector provided in some embodiments of the present disclosure. Figure 4 is a schematic diagram of the three-dimensional exploded view of an electrical connector provided in some embodiments of the present disclosure. Figure 5 is a schematic diagram of the three-dimensional structure of an isolator provided in some embodiments of the present disclosure. Figure 6 is a schematic flow diagram of a method for manufacturing an electrical connector provided in some embodiments of the present disclosure.

[0105] In some embodiments of the present disclosure, for ease of description, a first direction, a second direction, and a third direction are defined, and the first direction, the second direction, and the third direction are perpendicular to each other. However, those skilled in the art should understand that the embodiments of the present disclosure are not limited to the case where the three directions are perpendicular to each other. For ease of description, as shown by the arrows in Figures 3 to 5, the direction indicated by arrow X is the first direction, the direction indicated by arrow Y is the second direction, and the direction indicated by arrow Z is the third direction.

[0106] As shown in Figures 3 and 4, a first aspect of the present disclosure provides an electrical connector 400 for use with a battery 100. The electrical connector 400 includes at least two isolators 1, each of which is integrated with an electrical circuit 2, with the connection end 2a of each electrical circuit 2 exposed from the isolator 1. The isolators 1 are connected to each other, and the electrical circuits 2 integrated on each isolator 1 are insulated from each other.

[0107] The isolator 1 is generally in the shape of a plate and is used to carry the electrical circuit 2. The plate-shaped isolator 1 can better carry the electrical circuit 2. Of course, in some other embodiments, the isolator 1 can also be in any other suitable shape.

[0108] Exemplarily, the isolating member 1 is made of insulating material, which includes but is not limited to plastic, plastic cement, etc.

[0109] Electrical circuit 2 is the path for electrical current. Connection end 2a of electrical circuit 2 is exposed from isolation element 1 and is used to connect to various electrical components or to a circuit board integrating the components, thereby achieving reliable electrical connection between the components. Electrical circuit 2 is comprised of, for example, at least one current-conducting wire or at least one conductive metal strip.

[0110] The electrical circuit 2 includes but is not limited to a high-voltage sampling circuit, a low-voltage control circuit, and the like.

[0111] Electrical components include but are not limited to relays, fuses, etc.

[0112] Since the electrical circuits 2 of the electrical connector 400 are integrated on the isolating member 1 and are insulated from each other, each electrical circuit 2 can be relatively well bound on the isolating member 1, and are less likely to interfere with each other or other structural members, thereby improving the routing regularity and connection reliability of the electrical connector 400 and reducing the risk of short circuits caused by line interference.

[0113] Exemplarily, as shown in FIG5 , at least one groove 1a may be formed on the isolating member 1, and the shape of the groove 1a corresponds to the shape of the electrical circuit 2, so that the electrical circuit 2 can be embedded in the groove 1a. In this way, the electrical circuit 2 can be better integrated on the isolating member 1, further reducing the possibility of movement of the electrical circuit 2, thereby reducing the possibility of interference with the wiring harness.

[0114] Each electrical circuit 2 may include multiple conducting circuits, and the number of grooves 1a on an isolator 1 may also be multiple. When the number of conducting circuits in the electrical circuit 2 is multiple, the multiple conducting circuits may be interspersed in one groove 1a, or may be respectively embedded in multiple different grooves 1a.

[0115] The embodiment of the present disclosure does not impose a specific limit on the number of grooves 1a. The number of grooves 1a on each isolation member 1 can be the same or different.

[0116] In addition, since the electrical circuits 2 are integrated on the isolating member 1 , the overall structure of the electrical connector 400 can be made more compact, thereby reducing the size of the electrical connector 400 and improving space utilization.

[0117] In the related art, when scattered wiring harnesses are used as electrical circuits for electrical connection, due to the large length tolerance of the wiring harnesses, the positions of the connection ends of each electrical circuit may change. This may cause mis-insertion or wrong insertion when making electrical connections with electrical components, causing certain risks.

[0118] In the embodiment of the present disclosure, the positions of the various electrical circuits 2 integrated on the isolation member 1 are relatively fixed and not prone to movement. Therefore, the positions of the connection ends 2a of the electrical circuits 2 exposed from the isolation member 1 are also relatively fixed, thereby making the positions of the electrical components connected to the connection ends 2a relatively fixed each time. This reduces the possibility of changes in the plug-in positions of the electrical components, which may lead to mutual plugging or misplugging, and improves the reliability of the electrical connector 400.

[0119] In addition, the electrical circuit 2 is integrated into the isolator 1, so that the wiring of the electrical connector 400 is simpler, which is conducive to later maintenance, and the assembly is simple, which is more conducive to automated assembly, thereby effectively improving production efficiency.

[0120] In some embodiments of the present disclosure, two adjacent isolation members 1 are formed as an integral piece, or two adjacent isolation members 1 are connected into one piece.

[0121] In some embodiments, adjacent isolators 1 can be formed as an integral piece, that is, a plurality of isolators 1 are integrally formed into an integral structure, thereby reducing the number of parts and components and lowering production costs.

[0122] Exemplarily, two adjacent isolators 1 can be formed as an integral part along the thickness direction (third direction), that is, formed into an integral isolator 1 with a relatively thick thickness, and each electrical circuit 2 can be respectively integrated on two opposite surfaces of the integral isolator 1 along the thickness direction.

[0123] As another example, two adjacent isolators 1 can be formed into an integral piece in parallel along the first direction or the second direction, that is, formed into an integral isolator 1 with a larger surface area, and the electrical circuits 2 are integrated in parallel and at intervals on the integral isolator 1.

[0124] In some embodiments, two adjacent isolation members 1 can be split structures and connected into one body by connection, thereby improving the connection reliability, reducing the possibility of the isolation members 1 moving with each other and causing the electrical circuit 2 integrated thereon to move, thereby causing wiring interference, and improving reliability.

[0125] Those skilled in the art will appreciate that an electrical connector 400 may include only one integral isolating member 1, or may include multiple separate and interconnected isolating members 1, or may include both an integral isolating member 1 and separate and interconnected isolating members 1. The present disclosure does not impose any specific restrictions on the structure of the isolating member 1, as long as it can stably integrate the electrical circuit 2 and insulate the electrical circuits 2 from each other.

[0126] In some embodiments of the present disclosure, as shown in FIG4 , the isolator 1 includes a first isolator 11, a second isolator 12, and a third isolator 13. The electrical circuit 2 includes a first electrical circuit 21, a second electrical circuit 22, and a third electrical circuit 23. The first electrical circuit 21 is integrated into the first isolator 11, the second electrical circuit 22 is integrated into the second isolator 12, and the third electrical circuit 23 is integrated into the third isolator 13.

[0127] Thus, different electrical circuits 2 are integrated on different isolators 1, further reducing the possibility of interference between different electrical circuits 2 and improving the regularity of the routing of the electrical connector 400. Furthermore, the insulation performance between different electrical circuits 2 is improved, reducing the risk of short circuits or signal interference caused by contact between different electrical circuits 2, and improving the reliability and stability of the electrical connector 400.

[0128] In the embodiment of the present disclosure, the first spacer 11, the second spacer 12 and the third spacer 13 are stacked along the thickness direction (third direction). In some other embodiments, the first spacer 11, the second spacer 12 and the third spacer 13 can also be arranged in parallel along the first direction or the second direction.

[0129] In the embodiment of the present disclosure, the length direction of the spacer 1 may be referred to as a first direction, the width direction of the spacer 1 may be referred to as a second direction, and the thickness direction of the spacer 1 may be referred to as a third direction.

[0130] The disclosed embodiment does not impose specific limitations on the shapes of the first isolating member 11, the second isolating member 12, the third isolating member 13 and the first electrical circuit 21, the second electrical circuit 22, and the third electrical circuit 23. The shapes of the three isolating members 1 may be the same or different, and the shapes of the three electrical circuits 2 may be the same or different, and may be specifically set according to actual conditions.

[0131] In some embodiments of the present disclosure, at least one of the first electrical circuit 21 , the second electrical circuit 22 , and the third electrical circuit 23 is a low-voltage control circuit, and the remaining electrical circuits 2 are high-voltage sampling circuits.

[0132] Therefore, different types of electrical circuits 2 can be selected and set according to actual conditions. The electrical circuits 2 can be insulated from each other and are less likely to interfere with each other, which can effectively improve the reliability of the electrical connector 400.

[0133] The battery high-voltage sampling circuit is mainly used to collect and monitor the voltage in the battery system with high precision to ensure the normal operation of the entire battery system. The low-voltage control circuit is controlled by the main relay to open and close the control circuit.

[0134] In the embodiment of the present disclosure, the first electrical circuit 21 and the third electrical circuit 23 are high-voltage sampling circuits, and the second electrical circuit 22 is a low-voltage control circuit.

[0135] The embodiment of the present disclosure does not specifically limit the types of the first electrical circuit 21, the second electrical circuit 22 and the third electrical circuit 23. In some other embodiments, the first electrical circuit 21, the second electrical circuit 22 and the third electrical circuit 23 may also be any other electrical circuits.

[0136] In some embodiments of the present disclosure, each electrical circuit 2 includes a metal busbar.

[0137] Thus, a metal bar can be used instead of a wire harness to realize de-wiring of the electrical connector 400 , thereby making the structure of the electrical circuit 2 simpler and further reducing the possibility of interference between the wire harness and structural components.

[0138] Moreover, the position of the connection end 2a of the electrical circuit 2 formed by the metal bar extending out of the isolating component 1 is less likely to change, thereby further reducing the possibility of incorrect insertion of the electrical component and improving the reliability of the electrical connector 400.

[0139] Each metal row constituting the electrical circuit 2 may include at least one metal strip, each metal strip serving as a conductive loop of the electrical circuit 2 , ie, a wiring harness, and the portion of each metal strip exposed from the isolator 1 may serve as a connection terminal 2 a of the electrical circuit 2 .

[0140] In some embodiments, the exposed end of a metal strip can form a connecting terminal 2a, or the exposed end of a metal strip can form two, three or more connecting terminals 2a. The embodiments of the present disclosure do not specifically limit this and can be set according to actual conditions.

[0141] For example, the metal bar can be punched by a stamping process, which has high production efficiency and high precision.

[0142] As another example, the material of the metal bar includes but is not limited to copper, aluminum, stainless steel, copper-aluminum alloy, etc.

[0143] In addition, the connection end 2a of the metal row extending out of the isolation piece 1 can be directly constructed as a terminal inside the connector, thereby being directly connected to the electrical component. There is no need to set up an additional connector at the end of the wiring harness like the traditional wiring harness connection method, which reduces the number of parts and reduces production costs.

[0144] For example, a housing 2b can be placed around the outer periphery of the connection end 2a of the metal bar extending out of the separator 1, so that the housing 2b surrounds the connection end 2a, thereby forming a connector for connecting to an electrical component together with the housing 2b. The housing 2b is made of, for example, an insulating material and can be manufactured using a plastic molding process.

[0145] As another example, a connection terminal 2c may be sleeved on the periphery of the connection end 2a of the metal row extending out of the isolation member 1, so as to be connected to the electrical component through the connection terminal 2c.

[0146] In some embodiments of the present disclosure, the metal bus includes a copper bus.

[0147] The copper busbar is more conductive and has lower impedance, thereby improving the electrical connection performance of the electrical connector 400. Furthermore, copper has good plasticity and can be processed into various shapes of connection terminals 2a to meet different connection requirements.

[0148] In addition, copper has good corrosion resistance and can well resist oxidation and rust, so that the connecting end 2a of the electrical connector 400 has a longer life and better reliability and stability.

[0149] In some embodiments of the present disclosure, the connection end 2 a of the electrical circuit 2 extends along the circumferential direction of the isolating element 1 to expose the isolating element 1 .

[0150] Thus, the space along the circumferential direction of the isolating member 1 can be fully utilized to arrange the connection end 2a of the electrical connector 400 for connecting with the electrical component or the circuit board, thereby improving space utilization.

[0151] Exemplarily, the isolating element 1 extends along a first direction, the electrical circuit 2 integrated in the isolating element 1 also extends along the first direction, and the connection end 2 a of the electrical circuit 2 extends along the first direction to expose the isolating element 1 .

[0152] As another example, the isolating element 1 extends along a first direction, the electrical circuit 2 integrated in the isolating element 1 also extends along the first direction, and the connection end 2a of the electrical circuit 2 extends along a second direction to expose the isolating element 1 .

[0153] As another example, the isolator 1 extends along the first direction, the electrical circuit 2 integrated in the isolator 1 extends along the second direction, and the connection end 2a of the electrical circuit 2 extends along the first direction and / or the second direction to expose the isolator 1.

[0154] Those skilled in the art should understand that the extension directions of the connection ends 2 a of different electrical circuits 2 integrated on each isolator 1 may be the same or different.

[0155] In some embodiments of the present disclosure, a through hole 1 b is formed on the isolating member 1 , and the connecting end 2 a of the electrical circuit 2 passes through the through hole 1 b and is exposed from the isolating member 1 .

[0156] The through hole 1b penetrates the isolator 1 along the third direction, thereby making full use of the space of the isolator 1 along the third direction to set the connection end 2a of the electrical connector 400 for connecting to the electrical component or circuit board, further improving space utilization.

[0157] For example, the end of the electrical loop 2 may be bent to form a bent portion, and the bent portion extends along the third direction and passes through the through hole 1 b on the isolating member 1 to form the connecting end 2 a.

[0158] Thus, the electrical connector 400 can be formed with connection ends 2a along three directions, so that the arrangement of electrical components can be more flexible and the position of the connection end 2a of the electrical connector 400 can be set according to the actual arrangement of electrical components.

[0159] In some embodiments of the present disclosure, the isolation members 1 are stacked and connected by fixed connectors 3 .

[0160] In this way, the electrical circuits 2 integrated on each isolator 1 can be stacked on each other and separated from each other by the isolator 1 without crossing, further reducing the possibility of wiring interference, and making it less likely for the electrical circuits 2 to interfere with each other during operation, thereby improving the stability of electrical and signal transmission.

[0161] Moreover, the stacked isolating members 1 can make the structure of the electrical connector 400 more compact, further reduce the size and occupied space of the electrical connector 400 , and improve space utilization.

[0162] In addition, adjacent isolation members 1 are connected by fixed connectors 3, which has a simple structure and high assembly efficiency. It can also improve the connection stability between each isolation member 1 and reduce the possibility of loosening between each other, thereby improving the reliability and stability of the electrical connector 400.

[0163] Exemplarily, the fixed connector 3 includes but is not limited to a snap-on connector, a plug-in connector, a riveted connector, and the like.

[0164] In some embodiments of the present disclosure, the fixed connection member 3 includes a hot riveting connection member.

[0165] Specifically, the hot riveting connector includes a hot rivet stud 31 and a through hole 32. When two adjacent isolation members 1 are stacked and assembled, the hot rivet stud on one isolation member 1 passes through the through hole 32 on the adjacent isolation member 1, and then the hot rivet stud 31 is heated at a high temperature, so that the hot rivet stud 31 melts and deforms and is connected to the adjacent isolation member 1.

[0166] The use of heat riveting allows for rapid connection between adjacent spacers 1, resulting in high assembly efficiency and ease of operation. Furthermore, heat riveting provides increased connection strength and stability, making it less likely for spacers 1 to fall off or become damaged, further enhancing the stability of the electrical connector 400.

[0167] In addition, after the adjacent isolation members 1 are connected using the hot riveting process, the surface of the connection between the two is flat and smooth, and it is not easy to leave obvious protrusions or defects. In this way, the possibility of the electrical connector 400 colliding or rubbing with other structural members during use, thereby reducing the possibility of the electrical connector 400 or other structural members being damaged.

[0168] Those skilled in the art will appreciate that, in the disclosed embodiment, a single spacer 1 is formed with both a heat rivet stud 31 and a through hole 32, which facilitates connection when multiple spacers 1 are stacked. Of course, in other embodiments, a single spacer 1 may be formed with only a heat rivet stud 31 or only a through hole 32.

[0169] In the disclosed embodiment, a single spacer 1 includes multiple (more than one) thermal rivet studs 31 and multiple (more than one) through-holes 32. Each thermal rivet stud 31 passes through a corresponding through-hole 32 on an adjacent spacer 1, or each through-hole 32 allows a thermal rivet stud 31 on an adjacent spacer 1 to pass through. In other words, when both thermal rivet studs 31 and through-holes 32 are formed on a spacer 1, the positions of the thermal rivet studs 31 and through-holes 32 on each spacer 1 are different. The disclosed embodiment does not impose specific restrictions on the positions and numbers of the thermal rivet studs 31 and through-holes 32 on the spacer 1, as long as adjacent spacers 1 can be thermally riveted together via their respective thermal rivet studs 31 and through-holes 32.

[0170] In some embodiments of the present disclosure, the material of the isolation member 1 includes plastic.

[0171] Plastic components have good insulation properties, which insulate the electrical circuits 2 from each other and improve the reliability of the electrical connector 400. Plastic components are also relatively low in cost and have stable chemical properties, which can extend the service life of the electrical connector 400 and reduce production costs.

[0172] Of course, in some other embodiments, the isolation member 1 may also be made of any other suitable material.

[0173] For example, the spacer 1 can be manufactured by injection molding, which has high production efficiency, precise product size, easy operation, and can be automated.

[0174] A second aspect of the present disclosure provides a method for manufacturing an electrical connector 400, as shown in FIG6 , the manufacturing method comprising:

[0175] S100: Manufacturing at least two isolation members through an injection molding process.

[0176] S200: Manufacturing at least two metal bars through a stamping process.

[0177] S300: Arranging the metal bars on the isolation members respectively, and making the connection ends of the metal bars exposed from the isolation members.

[0178] S400: stacking the spacers on which the metal rows are arranged, and connecting adjacent spacers via fixed connectors.

[0179] Thus, the electrical connector 400 can be manufactured in a simple and convenient way, the wiring harness of the electrical connector 400 can be eliminated, and the electrical circuit 2 composed of the metal bar can be integrated on the isolation part 1, thereby effectively reducing the wiring harness interference problem of the electrical connector 400 and making the structure of the electrical connector 400 compact, thereby effectively improving space utilization.

[0180] A third aspect of the present disclosure provides a battery 100, comprising a high-voltage distribution box 103, a circuit board, a relay, and at least one electrical connector 400 according to the first aspect of the present disclosure. The circuit board and the relay are located within the high-voltage distribution box 103. The electrical connector 400 is configured to connect the circuit board and the relay via a connection terminal 2a.

[0181] The high-voltage distribution box 103 of the battery 100 of the embodiment of the present disclosure includes an electrical connector 400 that is not prone to wire harness interference and has a compact structure. Therefore, it can effectively improve the stability of the high-voltage distribution box 103 and improve the space utilization of the high-voltage distribution box 103, thereby improving the reliability and stability of the battery.

[0182] A fourth aspect of the present disclosure provides an electrical device, the electrical device comprising the battery 100 according to the first aspect of the present disclosure for providing electrical energy.

[0183] The electrical device provided by the embodiment of the present disclosure uses the battery 100 with good performance as described above, thereby reducing the time spent on maintenance and reducing the risk of short circuits and the like.

[0184] A fifth aspect of the present disclosure provides an energy storage device, which includes the battery 100 according to the first aspect of the present disclosure for storing or providing electrical energy.

[0185] The energy storage device provided by the embodiment of the present disclosure uses the battery 100 with good performance as described above, thereby reducing the time spent on maintenance and reducing the risk of short circuits and the like.

[0186] Specific examples of some embodiments of the present disclosure are described below with reference to the accompanying drawings.

[0187] As a specific example, electrical connector 400 includes an injection-molded isolation plate (isolator 1) and a copper busbar (metal busbar). The injection-molded isolation plate is provided with ribs (grooves 1a) that mate with the copper busbar. The copper busbar is assembled onto the injection-molded isolation plate, separating the high-voltage sampling circuit from the low-voltage control circuit (electrical circuit 2) via three layers of isolation plates. The three layers of isolation plates are positioned and assembled together using heat rivet studs 31, then fixed together by heat riveting. Finally, the connector (housing 2b) is mounted to the copper busbar terminal (connection end 2a).

[0188] The above embodiments are intended only to illustrate the technical solutions of the present disclosure, and are not intended to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they may modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. Such modifications or replacements do not deviate from the essence of the corresponding technical solutions and are intended to be included within the scope of the present disclosure. In particular, the various technical features described in the various embodiments may be combined in any manner as long as there are no structural conflicts.

Claims

1. An electrical connector for a battery, comprising: At least two isolators, each of which is integrated with an electrical circuit, and a connection end of each electrical circuit is exposed from the isolator; The isolation members are connected to each other, and the electrical circuits integrated on the isolation members are insulated from each other.

2. The electrical connector according to claim 1, wherein The two adjacent isolation members are formed as an integral piece; or The two adjacent isolation pieces are connected into one body.

3. The electrical connector according to claim 1 or 2, wherein: The isolation member includes a first isolation member, a second isolation member and a third isolation member; The electrical circuit includes a first electrical circuit, a second electrical circuit and a third electrical circuit; The first electrical circuit is integrated into the first isolating member, the second electrical circuit is integrated into the second isolating member, and the third electrical circuit is integrated into the third isolating member.

4. The electrical connector according to claim 3, wherein: At least one of the first electrical circuit, the second electrical circuit and the third electrical circuit is a low-voltage control circuit, and the remaining electrical circuits are high-voltage sampling circuits.

5. The electrical connector according to any one of claims 1 to 4, wherein: Each of the electrical circuits includes a metal busbar. The electrical connector according to claim 5 , wherein: The metal busbar includes a copper busbar.

7. The electrical connector according to any one of claims 1 to 6, wherein: The connection end of the electrical circuit extends along the circumferential direction of the isolation member and is exposed from the isolation member.

8. The electrical connector according to claim 7, wherein: The isolating member is formed with a through hole; The connection end of the electrical circuit passes through the through hole and is exposed from the isolation member.

9. The electrical connector according to any one of claims 1 to 8, wherein: The isolation members are stacked and connected by fixed connectors.

10. The electrical connector according to claim 9, wherein The fixed connection member includes a hot riveting connection member.

11. The electrical connector according to any one of claims 1 to 10, wherein: The material of the isolation piece includes a plastic piece.

12. A method for manufacturing an electrical connector, the method comprising: fabricating at least two spacers by an injection molding process; Making at least two metal bars by a stamping process; Arranging each of the metal bars on each of the isolation members, respectively, and making the connection ends of each of the metal bars exposed from the isolation members; The spacers on which the metal rows are arranged are stacked one on top of the other, and adjacent spacers are connected by fixing connecting members.

13. A battery comprising: High voltage distribution box; A circuit board is located in the high-voltage distribution box; a relay, located in the high-voltage distribution box; and At least one electrical connector according to any one of claims 1 to 11, wherein the electrical connector is configured to connect the circuit board and the relay via connection terminals.

14. An electrical device comprising the battery according to any one of claims 1 to 11 for providing electrical energy.

15. An energy storage device comprising the battery according to any one of claims 1 to 11 for storing electrical energy or providing electrical energy.

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