Battery device, energy storage device and power utilization device

Abstract

The utility model discloses a battery device, an energy storage device and a power utilization device, the battery device comprises cables and a connector, and a plurality of cables are electrically connected through the connector; the cable is provided with an insulating layer and comprises a first cable and a second cable; the connector comprises an electric conductor; the electric conductor is provided with a through hole, and the through hole is configured to allow the first cable and the second cable to partially pass through; the electric conductor is provided with a first surface close to the cable and a second surface far away from the cable, and the insulating part completely covers the second surface; a plurality of piercing terminals are formed on the first surface, the piercing terminals protrude towards the side where the cables are located, and the piercing terminals are configured to be capable of piercing an insulating layer of the first cable and an insulating layer of the second cable so that the first cable and the second cable can be electrically connected. According to the invention, electrical connection among the plurality of cables in the battery device can be realized, the position selection of the connection nodes of the cables is more flexible, the processing steps of the connection nodes can be simplified, and the production and processing efficiency of the battery device can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery device, an energy storage device and a power utilization device. BACKGROUND

[0002] New energy batteries are increasingly widely used in life and industry. For example, new energy vehicles equipped with batteries have been widely used. In addition, batteries are also increasingly used in the field of energy storage and the like.

[0003] In a battery device, cables can be used to connect components and transmit power. In the setting scenario of the cables, there are multiple cables that are low in processing efficiency and unstable in connection at the connection point. Therefore, how to improve the processing efficiency of the cable connection point is one of the research and development topics in the industry. UTILITY MODEL CONTENT

[0004] To solve the above technical problems, the present application provides a battery device, an energy storage device and a power utilization device.

[0005] The present application is implemented through the following technical solutions.

[0006] A first aspect of the embodiment of the present application discloses a battery device, which comprises a cable and a connector. The cable is used to connect a circuit, and multiple cables are electrically connected through the connector. The cable has an insulating layer, and the cable comprises a first cable and a second cable. The connector comprises a conductive body. The conductive body has a through hole configured to allow the first cable and the second cable to at least partially pass through. The conductive body has a first surface close to the cable and a second surface away from the cable. The first surface is configured to be able to contact the cable, and an insulating member completely covers the second surface. The first surface is formed with multiple piercing terminals, which protrude toward the side where the cable is located. The piercing terminals are configured to pierce the insulating layer of the first cable and the insulating layer of the second cable to electrically connect the first cable and the second cable.

[0007] Since the piercing terminals can pierce the insulating layer to electrically connect the first cable and the second cable, multiple cables can be electrically connected through the piercing terminals and the conductive body. The piercing mode can provide good connection quality, make the selection of the connection node position of the cable more flexible, and also can omit the preparation of cable peeling and core wire arrangement, simplify the processing steps of the connection node, and improve the production and processing efficiency of the battery device.

[0008] In addition, since the insulating member completely covers the second surface of the conductive body, the conductive member can be insulated and isolated from other components, further reducing the risk of short circuit caused by the contact between the conductive member and other components.

[0009] In some embodiments, the first surface comprises a piercing section, and the piercing terminals are arranged on the piercing section; the piercing section is arranged with a plurality of piercing terminals along the circumference of the hole wall of the through hole.

[0010] Since the plurality of piercing terminals are arranged along the circumference of the hole wall of the through hole, the plurality of piercing terminals can be used to pierce the plurality of cables respectively, and the holding force of the piercing crimping can be increased, the risk of poor contact can be reduced, and the reliability of the connector and the battery device can be improved.

[0011] In some embodiments, the piercing section is uniformly arranged with a plurality of piercing terminals along the circumference of the hole wall of the through hole.

[0012] Since the plurality of piercing terminals are uniformly arranged along the circumference of the hole wall of the through hole, the cables can be pierced and positioned in different directions. When the plurality of cables are connected, the flexibility of the cable arrangement is also improved. The uniformly arranged piercing terminals can achieve stable and reliable electrical connection, further improving the connection stability of the conductive body and the cable.

[0013] In some embodiments, the plurality of piercing terminals arranged along the circumference of the hole wall of the through hole form a piercing terminal group; the cable passes through the through hole along a first direction, and the piercing section is arranged with a plurality of piercing terminal groups along the first direction.

[0014] Since the piercing section is arranged with a plurality of piercing terminal groups, the cable can be pierced multiple times in the direction of the cable passing through, which is conducive to forming a reliable electrical connection between the cable and the conductive body, reducing the risk of increased contact resistance or poor contact caused by a single piercing, and improving the reliability of the battery device.

[0015] In some embodiments, the through hole comprises a first through hole and a second through hole, the piercing section comprises a first piercing section and a second piercing section, the first piercing section is close to the first through hole, the second piercing section is close to the second through hole, and a flat section is arranged between the first piercing section and the second piercing section along the first direction.

[0016] In this way, the flat section does not need to be arranged with piercing terminals, and can be used to accommodate the cable end inside the conductive body, simplifying the internal structure of the conductive body and reducing the production cost of the connector and the battery device.

[0017] In some embodiments, the piercing terminal has a pointed end for piercing the insulating layer.

[0018] Since the piercing terminal has a pointed end for piercing the insulating layer, the pointed end can improve the piercing effect of the piercing terminal, and also improve the connection effect of the piercing terminal and the cable part.

[0019] In some embodiments, in the state where the cable passes through the through hole, the connector is configured to be compressible, and the first surface of the connector in the compressed state is in contact with the cable.

[0020] Thus, the compression connection can make the cable in close contact with the conductor, can seal the insulation layer pierced by the piercing terminal, can reduce the adverse conditions of oxidation at the insulation layer damage to a certain extent, can reduce the risk of poor contact between the piercing terminal and the core wire of the cable, can improve the overcurrent capacity and reliability of the connector, and can further improve the stability of the battery device.

[0021] In some embodiments, in the compressed state, the compression rate of the cable and the connector is 10% to 30%.

[0022] Thus, the compression rate is in a suitable range, which can improve the crimping quality, reduce the crimping resistance, and make the fixation between the cable and the connector more reliable.

[0023] In some embodiments, the thickness of the insulating piece is between 0.15 mm and 0.5 mm.

[0024] Thus, the thickness of the insulating piece is in a suitable range, which can balance the creepage distance and the insulation cost of the connector, and better adapt to different sizes of the connector.

[0025] The second aspect of the embodiments of the present application provides a power storage device, which includes a plurality of the battery devices of the first aspect of the embodiments of the present application, and the battery devices are used to store or provide electric energy.

[0026] Since the power storage device includes the battery device of the first aspect of the embodiments of the present application, the processing efficiency and the working reliability of the power storage device are improved.

[0027] The third aspect of the embodiments of the present application provides a power consumption device, which includes the battery device of the first aspect of the embodiments of the present application or the power storage device of the second aspect of the embodiments of the present application, and the battery device is used to store or provide electric energy.

[0028] Since the power consumption device includes the battery device of the first aspect of the embodiments of the present application or the power storage device of the second aspect of the embodiments of the present application, the processing efficiency and the working reliability of the power consumption device are improved.

[0029] Through the present application, the electrical connection between the plurality of cables in the battery device can be realized, the position selection of the connection node of the cable is more flexible, the processing steps of the connection node can be simplified, and the production and processing efficiency of the battery device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments with reference made to the accompanying drawings. The drawings are for purposes of illustration only and are not intended to limit the scope of the present application. Like reference numerals designate corresponding parts throughout the several views, and are not intended to limit the scope of the present application. In the drawings:

[0031] Figure 1 A structural schematic diagram of a vehicle provided for some embodiments of the present application;

[0032] Figure 2 A perspective exploded schematic diagram of a battery provided for some embodiments of the present application;

[0033] Figure 3 An assembly schematic diagram of a cable and a connector provided for some embodiments of the present application;

[0034] Figure 4 A structural schematic diagram of a connector provided for some embodiments of the present application;

[0035] Figure 5 A structural schematic diagram of a through hole of a connector provided for some embodiments of the present application;

[0036] Figure 6 A structural schematic diagram of a connector provided for some embodiments of the present application; Figure 5 A sectional view at A-A in FIG. 1;

[0037] Figure 7 A structural schematic diagram of a connector in a compressed state provided for some embodiments of the present application;

[0038] Figure 8 Another perspective schematic diagram of a connector in a compressed state provided for some embodiments of the present application;

[0039] Figure 9 A structural schematic diagram of an energy storage device provided for some embodiments of the present application.

[0040] Explanation of Reference Signs

[0041] 100 - battery device, 101 - box body, 102 - cover body, 103 - bottom plate, 1 - battery cell, 10 - cable, 10a - insulation layer, 10b - core wire, 11 - first cable, 12 - second cable, 20 - connector, 21 - conductive body, 22 - first surface, 23 - second surface, 24 - through hole, 24a - first through hole, 24b - second through hole, 25 - first piercing section, 26 - second piercing section, 27 - flattening section, 30 - piercing terminal set, 31 - piercing terminal, 32 - tip portion, 40 - insulation piece, 200 - controller, 300 - motor, 1000 - vehicle, 2000 - energy storage device. DETAILED DESCRIPTION

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

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the terms "comprising" and "having," and any variations thereof, as used herein are intended to cover a non-exclusive inclusion.

[0044] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0045] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to each other. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0046] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are "or" relationship.

[0047] In the description of the embodiments of the present application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and is not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed, operated or used in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0048] In the description of the embodiments of the present application, unless explicitly defined and limited otherwise, the technical terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be direct connection, can also be indirect connection through an intermediate medium, can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0049] In the description of the embodiments of the present application, unless explicitly defined and limited otherwise, the technical term "contact" should be understood in a broad sense, which can be direct contact or contact through an intermediate medium layer, and can be contact between two objects in contact without interaction force, or contact between two objects in contact with interaction force.

[0050] Next, the present application will be described in detail.

[0051] At present, new energy batteries are more and more widely used in life and industry. New energy batteries are not only used in energy storage power supply systems such as hydroelectric, thermal, wind and solar power stations, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also increasing.

[0052] In many application scenarios, the battery device realizes the electrical connection between components through the cable, and can also be used for power transmission. In the installation and erection scene of the cable, multiple cables are connected to each other at the connection point, and the connection point of the cable has the problems of low processing efficiency and unstable connection. Therefore, how to improve the processing efficiency of the cable connection point is one of the research topics in the industry.

[0053] After research and design, the connector with the through hole can connect multiple cables, the cable passes through the through hole, the connector is provided with a conductive piercing terminal, and the cables are conductive by piercing the cable insulation layer. The piercing connection has good connection quality, can simplify the processing steps of the connection node, and improve the processing efficiency of the connection point. At the same time, the insulating member is wrapped outside the connector, which improves the reliability of the connector and the battery device.

[0054] Based on this design concept, this application designs a battery device, which includes cables and connectors. The cables are used to connect circuits, and multiple cables are electrically connected through the connector. The cables have an insulating layer and include a first cable and a second cable. The connector includes a conductor. The conductor has a through hole configured to allow portions of the first and second cables to pass through. The conductor has a first surface close to the cable and a second surface away from the cable. The first surface is configured to contact the cable, and an insulating element completely covers the second surface. The first surface has a plurality of piercing terminals formed thereon, which protrude toward the side where the cable is located. The piercing terminals are configured to pierce the insulating layers of the first and second cables to electrically connect the first and second cables.

[0055] Since piercing the terminal can pierce the insulation layer to electrically connect the first and second cables, multiple cables can be electrically connected to the conductor through piercing the terminal. The piercing method can provide good connection quality, make the selection of cable connection node positions more flexible, and also eliminate the need for cable stripping and core wire preparation, simplify the processing steps of connection nodes, improve the processing efficiency of connection nodes, and further improve the production and processing efficiency of battery devices.

[0056] In addition, since the insulating component completely covers the second surface of the conductor, it can isolate the conductor from other components, further reducing the risk of short circuits caused by contact between the conductor and other components.

[0057] In the following embodiments, for ease of explanation, a vehicle 1000 is used as an example of an electrical device according to an embodiment of this application. The description is as follows with reference to the accompanying drawings.

[0058] Figure 1 The diagram illustrates the structure of a vehicle 1000 as provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Figure 1 As shown, a battery device 100 is installed inside the vehicle 1000. The battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0059] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0060] Figure 2 and Figure 3 A perspective exploded schematic view of a battery device 100 is provided in an embodiment of the present application. As shown in FIG. 1, the battery device 100 includes a bottom plate 103, a cover 102, and at least one battery cell 1. The cover 102 is arranged above the bottom plate 103, thereby forming a receiving space for the battery cell 1. Figure 2 and Figure 3 As shown in FIG. 1, the battery device 100 includes a bottom plate 103, a cover 102, and at least one battery cell 1. The cover 102 is arranged above the bottom plate 103, thereby forming a receiving space for the battery cell 1.

[0061] In an embodiment of the present application, the battery cell can be a secondary battery, which refers to a battery cell that can be activated by charging after discharging.

[0062] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead-acid battery, etc. The present application is not limited in this regard.

[0063] Although not shown, the battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charging and discharging process of the battery cell, active ions (such as lithium ions) are inserted and extracted between the positive electrode and the negative electrode. The separator is arranged between the positive electrode and the negative electrode, which can prevent the positive and negative electrodes from short-circuiting, and at the same time allow the active ions to pass through.

[0064] In some embodiments, the electrode assembly is provided with a tab (not shown), which can guide the current out of the electrode assembly. The tab includes a positive tab and a negative tab.

[0065] In some embodiments, the electrode assembly can have a wound structure, a stacked structure, or a hybrid structure of winding and stacking.

[0066] In some embodiments, the battery cell can include a housing. The housing is used to encapsulate the electrode assembly and other components such as electrolyte. The housing can be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), a composite metal shell (such as a copper-aluminum composite shell), or an aluminum-plastic film, etc.

[0067] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell, or other shapes of battery cells. The prismatic battery cell includes a square battery cell, a blade-shaped battery cell, a multi-prismatic battery cell, such as a hexagonal prismatic battery cell, etc. The present application is not particularly limited.

[0068] In some embodiments, the housing includes a shell and an end cap. The shell is provided with an opening, and the end cap closes the opening to form a sealed space for receiving the electrode assembly and electrolyte and other substances. The shell can be provided with one or more openings. The end cap can also be provided with one or more openings.

[0069] In some embodiments, the housing can be a sealed structure or a non-sealed structure. As an example, when the housing is a non-sealed structure, the housing serves to protect the electrode assembly, and a sealing bag is further included between the housing and the electrode assembly, which is used to encapsulate the electrode assembly and the electrolyte. Specifically, the sealing bag can be a bag-shaped insulating member or an aluminum plastic film. When the housing is a sealed structure, it is used to encapsulate the electrode assembly and the electrolyte, etc.

[0070] In some embodiments, at least one electrode terminal is provided on the housing, which is electrically connected with the tab (not shown). The electrode terminal can be directly connected with the tab, or indirectly connected with the tab through a current collecting member. The electrode terminal can be provided on the end cap or on the housing.

[0071] The discharge from the battery cell mentioned in the present application includes, but is not limited to, electrolyte, dissolved or split positive and negative electrode sheets, fragments of the separator, high-temperature and high-pressure gas generated by reaction, flame, etc.

[0072] The battery apparatus mentioned in the embodiments of the present application can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can include a plurality of battery cells connected in series, in parallel, or in a mixed connection through a current collecting member.

[0073] In some embodiments, the battery cell assembly is usually formed by arranging a plurality of battery cells; as an example, the battery cell assembly can be a battery module, which is formed by arranging and fixing a plurality of battery cells into an independent module. As an example, the battery module can be formed by bundling a plurality of battery cells with a cable tie.

[0074] In some embodiments, the battery apparatus can be a battery pack, which includes a box body and one or more battery cell assemblies accommodated in the box body.

[0075] As an example, the battery cell assembly can be a battery module, which can be accommodated in the box body by fixing the battery module in the box body.

[0076] As an example, the battery cell assembly can also be accommodated in the box body by directly fixing a plurality of battery cells in the box body.

[0077] As an example, the box can include a first box and a second box. The first box and the second box are buckled so that an inside of the box forms a closed space to accommodate the battery monomer assembly. The closed here means covered or closed, which can be sealed or unsealed. The first box can be a top cover or a bottom plate.

[0078] As an example, the box can include a top cover, a frame and a bottom plate. The top cover and the bottom plate are connected with the frame respectively so that an inside of the box forms a closed space to accommodate the battery monomer assembly.

[0079] As an example, the box can be part of a chassis structure of a vehicle. For example, the top cover of the box can be at least part of a floor of the vehicle, or the frame of the box can be at least part of a cross beam and a longitudinal beam of the vehicle.

[0080] In some embodiments, the battery device refers to an energy storage device, and the energy storage device includes a box, at least one side of which is provided with a door. The energy storage device includes an energy storage container, an energy storage cabinet and the like.

[0081] The technical solutions described in the embodiments of the present application are applicable to various electric devices using battery monomers and battery devices, such as mobile phones, portable devices, notebook computers, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, such as aircraft, rockets, space shuttles and spaceships.

[0082] In the following, the technical solutions of the present application are described in detail. Figures 2 to 9 The embodiments of the present application are described in detail.

[0083] Figure 2 The box of some embodiments of the present application is provided with a perspective exploded view of the battery; Figure 3 The assembly schematic diagram of the cable and the connector of some embodiments of the present application is provided; Figure 4 The structure schematic diagram of the connector of some embodiments of the present application is provided; Figure 5 The structure schematic diagram of the through hole of the connector of some embodiments of the present application is provided; Figure 6 The structure schematic diagram of the box of some embodiments of the present application is provided; Figure 5 The cross-sectional view of A-A in the figure; Figure 7 The structure schematic diagram of the connector in the compressed state of some embodiments of the present application is provided; Figure 8 Another perspective view of the connector in the compressed state of some embodiments of the present application is provided; Figure 9 The structure schematic diagram of the energy storage device of some embodiments of the present application is provided.

[0084] In some embodiments of the present application, for the purpose of illustration, a direction in which the cable passes, i.e. a first direction, and a circumferential direction of the hole wall of the through hole are set to be directions intersecting with each other, where the directions intersecting with each other include directions perpendicular to each other. In addition, for the purpose of illustration, as shown in Figures 3 to 6 the X direction and the W direction are set, the X direction can be the first direction, and the W direction can be the circumferential direction of the hole wall of the through hole.

[0085] A first aspect of an embodiment of the present application discloses a battery device 100, which comprises a cable 10 and a connector 20, the cable 10 is used to connect a circuit, and a plurality of cables 10 are electrically connected through the connector 20; the cable 10 has an insulating layer 10a, and the cable 10 comprises a first cable 11 and a second cable 12; the connector 20 comprises a conductive body 21; the conductive body 21 has a through hole 24 configured to allow the first cable 11 and the second cable 12 to partially pass through; the conductive body 21 has a first surface 22 close to the cable 10 and a second surface 23 away from the cable 10, the first surface 22 is configured to be capable of contacting the cable 10, and an insulating member 40 completely covers the second surface 23; the first surface 22 is formed with a plurality of piercing terminals 31, the piercing terminals 31 protrude towards the side where the cable 10 is located, and the piercing terminals 31 are configured to be capable of piercing the insulating layer 10a of the first cable 11 and the insulating layer 10a of the second cable 12 to electrically connect the first cable 11 and the second cable 12.

[0086] In an embodiment of the present application, as shown in Figure 2 the battery device 100 can further comprise a box body 101 and at least one battery monomer 1. The box body 101 can adopt various structures. Alternatively, the box body 101 can be a hollow structure with one side open, and a cover body 102 is covered on the open side to form a box body 101 with a placing space. Alternatively, the box body 101 can also be configured as a closed box body 101.

[0087] The box body 101 can comprise a first box body 101 and a second box body 101. The first box body 101 and the second box body 101 are buckled so that a closed space is formed inside the box body 101 to accommodate the battery monomer 1 assembly. Here, closed means covered or closed, which can be sealed or unsealed. The first box body 101 can be the cover body 102 or the bottom plate 103.

[0088] In a specific embodiment, as shown in Figure 2 the box body 101 comprises a bottom plate 103 and a cover body 102 covering above the bottom plate 103, so as to form a containing space for components such as the battery monomer 1 between the bottom plate 103 and the cover body 102. The bottom plate 103 can be formed as a substantially flat plate, or as a tray with a side wall and a bottom wall, and the present application does not limit this.

[0089] In the embodiments of the present application, the cable 10 can be connected to a plurality of components in the battery device 100, such as the battery cell 1, a sampling assembly (not shown), and the like, can also be led out from the battery device 100 and connected to other devices outside, and can also be connected to other cables, which are not limited in the present application.

[0090] In the embodiments of the present application, the cable 10 can have a plurality of core wires 10b, or can have only one core wire 10b, which are not limited in the present application.

[0091] It can be understood that the cable 10 can have different cross-sectional areas, outer diameters, rated voltages, and the like according to electrical design and wiring design, and those skilled in the art should understand that the specifications and sizes of the connector 20 can also be adjusted according to the specifications and sizes of the cable 10, which are not limited in the present application.

[0092] In the embodiments of the present application, the cable 10 has an insulating layer 10a and a core wire 10b. Of course, it can be understood that in other embodiments, the cable 10 can also have other structures, such as a shielding layer, a sheath, a filling layer, and the like, which are not limited in the present application.

[0093] Optionally, the material of the core wire 10b can be copper, aluminum, and alloys thereof, or can be a composite material of copper and aluminum, which are not limited in the present application.

[0094] In the embodiments of the present application, the cable 10 includes a first cable 11 and a second cable 12. Optionally, the first cable 11 and the second cable 12 can be the same structure of the cable 10; alternatively, the first cable 11 and the second cable 12 can also be different structures of the cable 10.

[0095] In the embodiments of the present application, the first cable 11 connected by the connector 20 can be one or more, and the second cable 12 connected by the connector 20 can also be one or more.

[0096] In the embodiments of the present application, the connector 20 includes a conductive body 21, which can refer to a component having a conductive property, which can be made of a conductive material such as copper and aluminum. Optionally, the material of the conductive body 21 can be the same as the material of the core wire 10b of the cable 10, or can be different.

[0097] In the embodiments of the present application, the conductive body 21 has a through hole 24 configured to allow the first cable 11 and the second cable 12 to partially pass through.

[0098] Optionally, the conductive body 21 is provided with one or more through holes 24.

[0099] Exemplarily, as shown in FIG. 1, the connector 20 includes a conductive body 21, and the conductive body 21 is provided with a through hole 24. Figure 3 , Figure 4As shown, the electrically conductive body 21 is provided with two through holes 24, both of which allow the cable 10 to partially pass through.

[0100] Optionally, the cable 10 can pass through the through hole 24 along the first direction (X).

[0101] Optionally, as shown, Figure 5 the through hole 24 can be a circular hole.

[0102] Alternatively, in other embodiments not shown, the through hole 24 can also be elliptical, triangular, square or other shapes. It can be understood that the above-mentioned shape of the through hole 24 can be the shape before compression.

[0103] It can be understood that the shape of the through hole 24 can also adapt to the shape of the plurality of cables 10.

[0104] Optionally, the electrically conductive body 21 can be cylindrical in shape, and according to the cross-sectional shape, the electrically conductive body 21 can be circular, elliptical, triangular, square or other polygonal, which is not limited in the present application.

[0105] In a specific embodiment, as shown in Figure 5 , Figure 6 the electrically conductive body 21 has a first surface 22 close to the cable 10 and a second surface 23 away from the cable 10, and the insulating member 40 completely covers the second surface 23.

[0106] It can be understood that the insulating member 40 can be made of materials with insulating properties, such as rubber, plastic, etc.

[0107] It can be understood that the insulating member 40 can have a certain thickness, which can be adjusted according to the thickness of the connector 20, the potential and the insulation distance, etc.

[0108] Since the insulating member 40 completely covers the second surface 23 of the electrically conductive body 21, the electrically conductive member can be insulated and isolated, reducing the risk of short circuiting when the electrically conductive member or the cable 10 contacts other components.

[0109] In the embodiments of the present application, the first surface 22 is formed with a plurality of piercing terminals 31, which protrude towards the side where the cable 10 is located, and the piercing terminals 31 are configured to pierce the insulating layers 10a of the first cable 11 and the second cable 12 to electrically connect the first cable 11 and the second cable 12.

[0110] Optionally, the piercing terminals 31 can correspond one-to-one to the cables 10, i.e. one piercing terminal 31 pierces one cable 10.

[0111] Alternatively, a plurality of piercing terminals 31 can pierce the same cable 10.

[0112] It can be understood that the piercing terminal 31 is in contact with the core wire 10b after piercing the insulating layer 10a, so that the cable 10 is electrically connected with the conductor 21, and the plurality of piercing terminals 31 pierce the insulating layer 10a of the first cable 11 and the insulating layer 10a of the second cable 12, so that the first cable 11 and the second cable 12 are electrically connected through the conductor 21.

[0113] It can be understood that the piercing terminal 31 is made of a conductive material, and can realize the electrical connection between the conductor 21 and the cable 10.

[0114] Exemplarily, the material of the piercing terminal 31 is copper, aluminum and alloys thereof, and can also be a composite material of copper and aluminum.

[0115] Optionally, the material of the piercing terminal 31 can be the same as the core wire 10b, or can be different from the core wire 10b.

[0116] Alternatively, the material of the piercing terminal 31 can be the same as the conductor 21, or can be different from the conductor 21.

[0117] Optionally, the piercing terminal 31 and the conductor 21 can be directly formed as an integrated structure, or can be a split combination structure.

[0118] Alternatively, when the piercing terminal 31 and the conductor 21 are a split combination structure, for example, the piercing terminal 31 and the conductor 21 can be connected by bonding, welding or other connection methods, which are not limited in the present application.

[0119] Since the piercing terminal 31 can pierce the insulating layer 10a to electrically connect the first cable 11 and the second cable 12, a plurality of cables 10 can be electrically connected with the conductor 21 through the piercing terminal 31, and the piercing method can provide good connection quality, so that the connection node position of the cable 10 is more flexible, and the preparation of stripping and arranging the core wire 10b of the cable 10 can be omitted, the processing steps of the connection node of the cable 10 are simplified, the processing efficiency of the connection node is improved, and the production and processing efficiency of the battery device is further improved.

[0120] In the embodiment of the present application, the piercing terminal 31 has a pointed end portion 32, and the pointed end portion 32 is used to pierce the insulating layer 10a.

[0121] In a specific embodiment, an end of the piercing terminal 31 away from the second surface 23 is formed with a pointed end portion 32; in the embodiment of the present application, the pointed end portion 32 is configured as a pointed end structure; the cross-sectional area of the pointed end portion 32 gradually decreases away from the second surface 23.

[0122] Optionally, the pointed end portion 32 can be in a reverse tapered shape, a sawtooth shape or the like.

[0123] It can be understood that the tip portion 32 has a certain sharpness, when the tip portion 32 contacts the surface of the cable 10, the tip portion 32 can pierce the insulating layer 10a of the cable 10, and at the same time, the core wire 10b can be electrically connected.

[0124] In addition, it can be understood that the size parameters of the tip portion 32 can be adjusted according to the material of the cable 10, the thickness of the insulating layer 10a of the cable 10, and the cross-sectional area of the cable 10. The length, thickness, and cross-sectional area of the tip portion 32 are not limited in the present application, and the piercing connection can be achieved.

[0125] Since the piercing terminal 31 has a tip portion 32 for piercing the insulating layer 10a, the tip portion 32 can improve the piercing effect of the piercing terminal 31, and at the same time, the piercing terminal 31 and the cable 10 can be limited and connected.

[0126] In the embodiment of the present application, as shown in Figure 5 , Figure 6 , the first surface 22 includes a piercing section, and the piercing terminal 31 is arranged on the piercing section. Along the circumference W of the hole wall of the through hole 24, the piercing section is provided with a plurality of piercing terminals 31.

[0127] Optionally, the number of piercing terminals 31 can be two, three, four, five, six, seven, eight, nine, ten, eleven, twelve, etc. Other values are not listed in the present application.

[0128] In the embodiment of the present application, as shown in Figure 5 , Figure 6 , the plurality of piercing terminals 31 can be arranged along the circumference W of the hole wall of the through hole 24.

[0129] Exemplarily, the piercing terminals 31 can be arranged at any interval along the circumference W of the hole wall of the through hole 24.

[0130] Exemplarily, the piercing terminals 31 can be arranged at the same interval along the circumference W of the hole wall of the through hole 24.

[0131] Since the plurality of piercing terminals 31 are arranged along the circumference W of the hole wall of the through hole 24, the plurality of piercing terminals 31 can be used to pierce and connect a plurality of cables 10 respectively, and the holding force of the piercing crimping can be increased, the risk of poor contact can be reduced, and the reliability of the connector 20 and the battery device 100 can be improved.

[0132] In the embodiment of the present application, as shown in Figure 5 , the piercing section uniformly arranges a plurality of piercing terminals 31 along the circumference W of the hole wall of the through hole 24.

[0133] In a specific embodiment, as shown in Figure 5 ,Figure 6 As shown, eight piercing terminals 31 are uniformly arranged along the circumference W of the hole wall of the through hole 24.

[0134] Since the plurality of piercing terminals 31 are uniformly arranged along the circumference W of the hole wall of the through hole 24, the cable 10 can be pierced and positioned in different directions. When multiple cables 10 are connected, the flexibility of the cable 10 arrangement is also improved. The uniformly arranged piercing terminals 31 can achieve stable and reliable electrical connection, further improving the connection stability of the conductor 21 and the cable 10.

[0135] In the embodiments of the present application, the plurality of piercing terminals 31 arranged along the circumference W of the hole wall of the through hole 24 are configured as a piercing terminal group 30; the cable 10 passes through the through hole 24 along a first direction (X), and along the first direction (X) in which the cable 10 passes, the piercing section is provided with a plurality of piercing terminal groups 30.

[0136] Exemplarily, the piercing section is provided with a plurality of piercing terminal groups 30, and the spacing between adjacent piercing terminals 31 in each piercing terminal group 30 can be the same or different.

[0137] Exemplarily, the piercing section is provided with a plurality of piercing terminal groups 30, and the number of piercing terminals 31 in each piercing terminal group 30 can be the same or different.

[0138] Optionally, the piercing section is provided with a plurality of piercing terminal groups 30, and the spacing between adjacent two piercing terminal groups 30 can be the same or different.

[0139] In specific embodiments, as shown in Figure 5 , Figure 6 As shown, the piercing section is provided with four piercing terminal groups 30, and each piercing terminal group 30 includes eight piercing terminals 31.

[0140] Since the piercing section is provided with a plurality of piercing terminal groups 30, the cable 10 can be pierced multiple times along the first direction (X) in which the cable 10 passes, which is beneficial to form a reliable electrical connection between the cable 10 and the conductor 21, reduce the risk of increased contact resistance or poor contact caused by a single piercing, and improve the reliability of the battery device 100.

[0141] In the embodiments of the present application, as shown in Figure 6 The through hole 24 includes a first through hole 24a and a second through hole 24b, and the piercing section includes a first piercing section 25 and a second piercing section 26, the first piercing section 25 is close to the first through hole 24a, and the second piercing section 26 is close to the second through hole 24b. The direction in which the cable 10 passes along the direction from the first piercing section 25 to the second piercing section 26 is the first direction (X), and a flat section 27 is arranged between the first piercing section 25 and the second piercing section 26.

[0142] Optionally, the length of the first piercing section 25 along the first direction (X) can be the same as the length of the second piercing section 26, or can be different. The present application does not limit this.

[0143] In a specific embodiment, as shown in Figure 6 The flat section 27 can be used to accommodate the end of the cable 10 inside the conductive body 21. The end can be either end of the cable 10 along its length, or can be an end formed by bending. The present application does not limit this.

[0144] It can be understood that in a specific embodiment, each cable 10 can be connected only with the first piercing section 25 or the second piercing section 26, facilitating subsequent crimping, and making the shape of the crimped connector 20 more uniform.

[0145] For example, one or more first cables 11 can pass through the first through hole 24a along the first direction (X), and one or more second cables 12 can pass through the second through hole 24b along the first direction (X). The ends of the first cables 11 and the second cables 12 are accommodated in the internal space of the corresponding conductive body 21 of the flat section 27. The number of first cables 11 can be equal to the number of second cables 12, or can be different. The present application does not limit this.

[0146] For another example, one or more first cables 11 can pass through the second through hole 24b along the first direction (X), and one or more second cables 12 can pass through the first through hole 24a along the first direction (X). The ends of the first cables 11 and the second cables 12 are accommodated in the internal space of the corresponding conductive body 21 of the flat section 27. The number of first cables 11 can be equal to the number of second cables 12, or can be different. The present application does not limit this.

[0147] Thus, the flat section 27 does not need to be provided with a piercing terminal 31, simplifying the internal structure of the conductive body 21 and reducing the production cost of the connector 20 and the battery device 100.

[0148] In the embodiment of the present application, optionally, the first piercing section 25 can be provided with a plurality of piercing terminal groups 30, and the second piercing section 26 can be provided with a plurality of piercing terminal groups 30. The number of piercing terminal groups 30 provided by the first piercing section 25 can be the same as the number of piercing terminal groups 30 provided by the second piercing section 26. Of course, in other embodiments not shown, the number of piercing terminal groups 30 provided by the first piercing section 25 can be different from the number of piercing terminal groups 30 provided by the second piercing section 26. The present application does not limit this.

[0149] Alternatively, the number of piercing terminal groups 30 provided by each piercing section can be adjusted according to the number of cables 10 to be pierced, for example, more piercing terminal groups 30 can be provided as the number of cables 10 increases. The present application does not limit this.

[0150] In the embodiment of the present application, the connector 20 is configured to be compressible in the state that the cable 10 passes through the through hole 24, and the first surface 22 of the connector 20 in the compressed state is in contact with the cable 10.

[0151] It can be understood that the shape of the connector 20 in the compressed state can be determined according to the shape of the compression mold and the number of pressing points, and of course, the shape of the connector 20 can also be adjusted according to the external space. Alternatively, the shape of the outer edge of the connector 20 in the compressed state can be a regular shape such as a circle, an ellipse, a triangle, a square, etc. when viewed in the first direction, or can be other irregular shapes, which are not limited by the present application.

[0152] For example, as shown in Figure 7 , Figure 8 , the second surface 23 of the connector 20 in the compressed state can be formed by connecting a plurality of arc surfaces when viewed in the first direction (X). It can be understood that the shape shown is only one possible implementation and cannot be considered as limiting the shape of the connector 20.

[0153] Alternatively, the first surface 22 of the connector 20 in the compressed state is in contact with the cable 10, and the outer surface of the cable 10 can be in complete contact with the first surface 22 or in partial contact. For example, in order to clearly display other components, the shape of the piercing terminal 31 is omitted in Figure 7 , Figure 8 . As shown in Figure 7 , Figure 8 , the outer surface of the cable 10 can be in partial contact with the first surface 22 after the connector 20 is compressed.

[0154] Therefore, the compression connection can make the cable 10 tightly contact with the conductor 21, can seal the insulation layer 10a pierced by the piercing terminal 31 to a certain extent, reduce the adverse conditions of oxidation at the damaged insulation layer 10a, and also reduce the risk of poor contact between the piercing terminal 31 and the core wire 10b of the cable 10, improve the overcurrent capacity and reliability of the connector 20, and further improve the stability of the battery device 100.

[0155] In the embodiment of the present application, the compression rate of the cable 10 and the connector 20 in the compressed state is 10% to 30%.

[0156] The compression rate can be defined and calculated according to the SAE / USCAR-21 standard, which will not be described herein.

[0157] Optionally, the compression rate can be 10%, 15%, 20%, 25%, 30%, etc. Other values ​​are not listed.

[0158] Therefore, when the compression ratio is within a suitable range, it can improve the crimping quality, reduce the crimping resistance, reduce the heat generation of the connector 20, and make the fixation between the cable 10 and the connector 20 more secure.

[0159] In the embodiments of this application, the thickness of the insulating element 40 is between 0.15 mm and 0.5 mm.

[0160] Optionally, the thickness of the insulating element 40 can be 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, etc. Other values ​​are not listed.

[0161] Therefore, the thickness of the insulating component 40 is within a suitable range, which can balance the creepage distance of the connector 20 and the insulation cost, and better adapt to connectors 20 of different sizes.

[0162] A second aspect of this application provides an energy storage device 2000, such as... Figure 9 As shown, the energy storage device 2000 includes a plurality of battery devices 100 provided in the first aspect of the present application embodiments, the battery devices 100 being used to store or provide electrical energy.

[0163] Since the energy storage device 2000 includes the battery device 100 provided in the first aspect of the embodiments of this application, it is beneficial to improve the processing efficiency and operational reliability of the energy storage device 2000.

[0164] A third aspect of the present application provides an electrical device, which includes a battery device 100 provided in the first aspect of the present application or an energy storage device 2000 provided in the second aspect of the present application. The battery device 100 is used to store or provide electrical energy.

[0165] In a specific embodiment, the electrical device can be vehicle 1000, such as... Figure 1 As shown, a battery device 100 is provided inside the vehicle 1000. The battery device 100 can be used to power the vehicle 1000. For example, the battery device 100 can be used as the operating power source or the driving power source of the vehicle 1000.

[0166] Since the electrical device includes the battery device 100 provided in the first aspect of the embodiments of this application or the energy storage device 2000 provided in the second aspect of the embodiments of this application, it is beneficial to improve the processing efficiency and operational reliability of the electrical device.

[0167] The fourth aspect of the embodiments of the present application provides a crimping processing method of a cable connection point, comprising the following steps:

[0168] A positioning step: the first cable 11 and the second cable 12 are respectively inserted through the through hole 24 of the connector 20, so that the first cable 11 and the second cable 12 are in a predetermined connection position.

[0169] A piercing and crimping step: the connector 20 is crimped, the piercing terminal 31 pierces the insulating layer 10a, and the first cable 11 and the second cable 12 are in conduction.

[0170] The specific embodiments of the present application will be described below with reference to the accompanying drawings.

[0171] The embodiments provide a connector 20, which can realize the piercing connection of multiple cables 10. After the multiple cables 10 are inserted into the connector 20, the multiple cables 10 can be connected in conduction through the piercing and crimping of the conductive body 21. Compared with the operation of ultrasonic welding or U-shaped clamp crimping connection of the cable 10, the embodiments do not need to strip (the insulating layer 10a) and arrange the core wire 10b of the cable 10 before connecting the cable 10, thereby saving the operation time, simplifying the operation process, and improving the processing efficiency of the cable 10 connection node.

[0172] In the embodiments, the cable 10 is inserted through the two end openings of the connector 20. After being inserted, the piercing terminal 31 pierces the insulating layer 10a of the cable 10. Since the piercing terminal 31 arranged on the conductive body 21 is in contact with the core wire 10b of the cable 10, a complete conduction path from the cable 10 to the piercing terminal 31 to the conductive body 21, to the piercing terminal 31, and to the cable 10 is realized.

[0173] The multiple piercing terminals 31, i.e., the multiple piercing terminal groups 30, can increase the holding force of the piercing and crimping, prevent the cable 10 from not being connected to the terminal tightly due to the failure of piercing once, and thus prevent the increase of contact resistance or poor contact.

[0174] If not particularly stated, all the embodiments and optional embodiments of the present application can be combined to form new technical solutions.

[0175] If not particularly stated, all the technical features and optional technical features of the present application can be combined to form new technical solutions.

[0176] If not otherwise specified, all steps of the application can be performed in any order, preferably in the order as specified. For example, the method comprises steps (a) and (b) means that the method can comprise steps (a) and (b) in the order as specified, or steps (b) and (a) in the order as specified. For example, it is mentioned that the method can further comprise step (c) means that step (c) can be added to the method in any order, for example, the method can comprise steps (a), (b) and (c), or steps (a), (c) and (b), or steps (c), (a) and (b), etc.

[0177] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the present application, but includes all technical solutions falling within the scope of the present application.

Claims

1. A battery device, characterized by, The battery device comprises cables for connecting circuits, and a connector for electrically connecting the cables; The cables have insulating layers, and the cables comprise a first cable and a second cable; The connector comprises a conductive body having a through hole configured to allow the first cable and the second cable to at least partially pass through; The conductive body has a first surface close to the cables and a second surface away from the cables, and an insulating member completely covers the second surface; The first surface is formed with a plurality of piercing terminals protruding toward the side where the cables are located, and the piercing terminals are configured to pierce the insulating layers of the first cable and the second cable to electrically connect the first cable and the second cable.

2. The battery device according to claim 1, characterized by The first surface comprises a piercing section where the piercing terminals are arranged; along the circumference of the hole wall of the through hole, the piercing section is provided with a plurality of piercing terminals.

3. The battery device of claim 2, wherein, The piercing section uniformly arranges a plurality of piercing terminals along the circumference of the hole wall of the through hole.

4. The battery device of claim 2, wherein A plurality of piercing terminals arranged along the circumference of the hole wall of the through hole form a piercing terminal group; the cable passes through the through hole in a first direction, and along the first direction, the piercing section is provided with a plurality of piercing terminal groups.

5. The battery device of claim 4, wherein, The through hole comprises a first through hole and a second through hole, and the piercing section comprises a first piercing section and a second piercing section, the first piercing section is close to the first through hole, and the second piercing section is close to the second through hole; along the first direction, a flat section is arranged between the first piercing section and the second piercing section.

6. The battery device according to any one of claims 1 to 5, characterized by, The piercing terminal has a pointed end for piercing the insulating layer.

7. The battery device according to any one of claims 1 to 5, wherein In the state that the cable passes through the through hole, the connector is configured to be compressed, and the first surface of the connector in the compressed state is in contact with the cable.

8. The battery device of claim 7, wherein, In the compressed state, the compression rate of the cable and the connector is 10% to 30%.

9. The battery device according to any one of claims 1 to 5, wherein The thickness of the insulating member is between 0.15mm and 0.5mm.

10. An energy storage device, characterized by, The energy storage device comprises a plurality of battery devices according to any one of claims 1 to 9 for storing or providing electric energy.

11. An electrical device, characterized by The power consuming device comprises a battery device according to any one of claims 1 to 9 or an energy storage device according to claim 10 for storing or providing electric energy.

Images