Battery device and electric equipment

Abstract

The invention provides a battery device and electric equipment. The battery device comprises a box body, a battery monomer and a high-voltage connector, wherein the high-voltage connector comprises a first low-voltage connector assembly; the second low-voltage connector is configured to be movably arranged relative to the first low-voltage connector so as to be switched between a plugging state and a separation state, and in the plugging state, the second low-voltage connector is plugged with the first low-voltage connector; in the separated state, the second low-voltage connector is separated from the first low-voltage connector; wherein the first low-voltage connector assembly comprises a jack, the second low-voltage connector assembly comprises a first pin and a second pin which are oppositely arranged, and when the second low-voltage connector assembly is in a plugging state, the first pin and the second pin are inserted into the jack, and the first pin and the second pin are in contact with each other to form electric connection, so that the low-voltage loop is switched on. According to the high-voltage connector of the battery device, electric contact positions are reduced, the failure risk is reduced, and the working reliability of the battery device is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to battery devices and electrical equipment. Background Art

[0002] Electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of the sustainable development of the automotive industry. The battery device is the core component of electric vehicles, so the operating reliability of the battery device is very important. Summary of the Invention

[0003] In view of the above problems, the present application provides a battery device and an electrical device to improve the working reliability of the battery device.

[0004] A first aspect of the present application provides a battery device, comprising a case, at least one battery cell and a high-voltage connector, wherein the at least one battery cell is arranged in the case, the high-voltage connector is connected to the case and comprises a first low-voltage connector and a second low-voltage connector, the second low-voltage connector being configured to be movably arranged relative to the first low-voltage connector to switch between a plugged-in state and a separated state, wherein in the plugged-in state, the second low-voltage connector is plugged into the first low-voltage connector; in the separated state, the second low-voltage connector is separated from the first low-voltage connector; wherein the first low-voltage connector comprises a socket, and the second low-voltage connector comprises a first pin and a second pin arranged opposite to each other, wherein when the second low-voltage connector is in the plugged-in state, the first pin and the second pin are inserted into the socket and the first pin and the second pin contact each other to form an electrical connection so that the low-voltage circuit is connected.

[0005] In the technical solution of the embodiment of the present application, when the second low-voltage connector is in the plugged-in state, the first pin and the second pin are inserted into the socket and the first pin and the second pin contact each other to form an electrical connection so that the low-voltage circuit is connected. In this way, as long as the first pin and the second pin contact each other, an electrical connection can be formed without the need to form two contacts with the socket respectively, which reduces the location of electrical contact, reduces the risk of failure, improves the working reliability of the high-voltage connector, and thereby improves the reliability of the battery device.

[0006] In some embodiments, when the second low-voltage connector moves relative to the first low-voltage connector to switch the second low-voltage connector from a separated state to a plugged state, the first pin and the second pin enter the socket and at least parts of the first pin and the second pin approach each other and contact each other under the action of the hole wall of the socket.

[0007] During the process of switching the second low-voltage connector of the embodiment of the present application from the separated state to the plugged state, the first pin and the second pin enter the socket and at least parts of the first pin and the second pin approach each other and contact each other under the action of the hole wall of the socket. In this way, the mutual contact between the first pin and the second pin is naturally formed during the plugging process, and the force comes from the hole wall of the socket. Therefore, compared with the related art, there is no need to make too many modifications to the structure of the high-voltage connector itself, which reduces costs and increases the scope of application.

[0008] In some embodiments, at least one of the first pin and the second pin includes a contact protrusion, which is constructed to protrude toward the other pin. When switching from the separated state to the plugged state, the ends of the first pin and the second pin approach each other under the action of the hole wall of the socket so that the contact protrusion contacts the other pin.

[0009] The technical solution of the embodiment of the present application is to provide a contact protrusion protruding toward the side of the other pin, so that the distance between the contact protrusion and the other pin is closer, and it is easier to contact with the other pin under the squeezing action of the hole wall to form an electrical connection, thereby improving the sensitivity of the low-voltage circuit connection of the high-voltage connector.

[0010] In some embodiments, the second low-voltage connector moves relative to the first low-voltage connector along a first direction to switch the second low-voltage connector from a separated state to a connected state, and the first pin and the second pin are arranged relative to each other in a second direction, and the second direction is perpendicular to the first direction.

[0011] The first pin and the second pin of the embodiment of the present application are arranged relative to each other in the second direction, and the second direction is perpendicular to the movement direction of the second low-voltage connector, that is, the first direction. In this way, the squeezing force of the hole wall on the first pin and the second pin also extends along the second direction. It is the force that brings the two pins closer to each other, allowing the two pins to approach each other more quickly to form an electrical contact connection, thereby further improving reliability.

[0012] In some embodiments, the wall of the jack is made of an insulating material. Setting the wall of the jack as an insulating material can avoid problems such as failures caused by electrical connections other than the electrical connection between the two pins, thereby improving working stability.

[0013] In some embodiments, at least one of the first and second pins includes a pin body and a contact protrusion disposed on the pin body. The contact protrusion is configured to protrude toward the other pin so as to contact the other pin when connected. The technical solution of the embodiments of the present application, by providing the contact protrusion protruding toward the other pin, reduces the distance between the contact protrusion and the other pin, making it easier for the contact protrusion to contact the other pin under the pressure of the hole wall to form an electrical connection, thereby improving the sensitivity of the high-voltage interlock circuit of the high-voltage connector.

[0014] In some embodiments, the contact protrusion includes a contact piece obliquely disposed on the pin body, wherein a first end of the contact piece is connected to the pin body and a second end of the contact piece is formed as a free end, so that the length of the contact piece can be adaptively adjusted according to the size of different sockets.

[0015] In some embodiments, each of the first and second pins includes a pin body and a contact member disposed on the pin body. The contact member includes a bent structure comprising a first bent section, a second bent section, and a transition section connecting the first bent section and the second bent section. When plugged in, the transition sections of the contact members of the first and second pins contact each other. In embodiments of the present application, when the first and second pins contact each other, the transition sections of the contact members contact each other. The abutting contact of the transition sections of the two pins increases the contact area, thereby increasing the electrical connection reliability.

[0016] In some embodiments, the transition section comprises an arcuate transition section.

[0017] In some embodiments, the pin body includes a bending part, the bending part includes a first segment and a second segment, the second segment is arranged at an end of the first segment close to the socket, and the first end of the second segment is connected to the first segment, and the second end of the second segment forms a free end. From the first end to the second end of the second segment, the second segment gradually approaches the middle between the first pin and the second pin to form a necked shape.

[0018] The ends of the two pin bodies in the embodiment of the present application, located near the socket, are formed into a tapered shape. This allows the pin bodies to enter the socket first during insertion, resulting in a smaller width and easier insertion. Furthermore, the tapered shape guides the pin bodies as they enter the socket, facilitating easier insertion. Furthermore, the pin bodies in the embodiment of the present application are configured as bent pieces, with a bend located between the first and second segments. When in the plugged state, the bend abuts against the wall of the socket, providing greater stability and maintaining the second low-voltage connector in the plugged state.

[0019] In some embodiments, the contact protrusion is provided on the first segment. In the embodiment of the present application, the contact protrusion is provided on two substantially parallel first segments, rather than on the second segment forming a constricted shape, so as to avoid the possibility of erroneous connection caused by the two contact protrusions contacting each other before the connection is fully completed.

[0020] In some embodiments, the open end of the jack is provided with a guide surface, which is an inclined surface. By providing the open end of the jack with an inclined guide surface, the embodiment of the present application allows the pin to slide inward along the guide surface when entering the jack. The guide surface guides the entry of the pin, making it easier to plug in and reducing the difficulty for the user.

[0021] In some embodiments, the high-voltage connector further comprises a first high-voltage connector and a second high-voltage connector, wherein the first low-voltage connector and the second low-voltage connector are engaged in conjunction with the engagement of the first high-voltage connector and the second high-voltage connector, and the first low-voltage connector and the second low-voltage connector are separated in conjunction with the separation of the first high-voltage connector and the second high-voltage connector. Since the first low-voltage connector and the first high-voltage connector are both provided on the first connector, and the second low-voltage connector and the second high-voltage connector are both provided on the second connector, the connection and separation between the first low-voltage connector and the second low-voltage connector can be changed in conjunction with the connection and separation between the first high-voltage connector and the second high-voltage connector, and thus the on-off state of the high-voltage circuit can be controlled according to the on-off state of the low-voltage circuit formed by the first low-voltage connector and the second low-voltage connector to avoid hot plugging and unplugging.

[0022] A third aspect of the present application provides an electrical device comprising the above-mentioned battery device.

[0023] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without creative work.

[0025] Figure 1 It is a structural diagram of electrical equipment in some embodiments of the present application.

[0026] Figure 2 Schematic diagram of the structure of the battery device of some embodiments of the present application.

[0027] Figure 3 This is a structural schematic diagram of a first low-voltage connector and a second low-voltage connector of a high-voltage connector in some embodiments of the present application in a plugged-in state.

[0028] Figure 4 This is a structural schematic diagram of the first low-voltage connector and the second low-voltage connector of the high-voltage connector of some embodiments of the present application in a separated state.

[0029] Figure 5 This is a schematic diagram of the structure of the pins of some embodiments of the present application.

[0030] Figure 6 This is a partial structural diagram of a high-voltage connector in some embodiments of the present application.

[0031] In the drawings, the drawings are not drawn to scale.

[0032] Marking Description: 2000. Vehicle.

[0033] 1000. Battery device.

[0034] 200, box body; 210, upper box body; 220, lower box body.

[0035] 100. Battery cell.

[0036] 300. High voltage connector.

[0037] 10. First low-voltage connector; 11. Jack; 111. Guide surface.

[0038] 20. Second low-voltage connector; 21a. First pin; 21b. Second pin; 21. Pin; 211. Pin body; 211a. First segment; 211b. Second segment; 212. Contact protrusion.

[0039] 30. The first high-voltage connector.

[0040] 40. Second high voltage connector.

[0041] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0042] 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 application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0043] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0044] 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 application. 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.

[0045] In the description of the embodiments of this application, 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 the following 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.

[0046] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0047] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0048] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," 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; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0049] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0050] The aforementioned devices using power batteries (such as electric vehicles and energy storage systems) include high-voltage systems. To enhance the safety of these systems, high-voltage connectors are equipped with a high-voltage interlock loop (HVIL). This HVIL monitors the integrity of the high-voltage circuit using a low-voltage signal, effectively acting as a low-voltage circuit. When the HVIL is connected or disconnected, a controller precisely controls the on / off state of the high-voltage circuit based on feedback signals. Only when all high-voltage component connectors are properly plugged in can the high-voltage system be powered on, thereby ensuring the safety of the entire vehicle.

[0051] Generally speaking, a high-voltage connector includes a first connector and a second connector that are plugged into each other, the first connector is provided with a first high-voltage connector and a first low-voltage connector, and the second connector is provided with a second high-voltage connector and a second high-voltage connector. The first connector and the second connector are plugged into each other to electrically connect the first high-voltage connector and the second high-voltage connector, thereby connecting the cable connected to the first high-voltage connector and the cable connected to the second high-voltage connector; the first connector and the second connector are separated to separate the first high-voltage connector and the second high-voltage connector, thereby disconnecting the cable connected to the first high-voltage connector and the cable connected to the second high-voltage connector.

[0052] The high-voltage interlock circuit uses low-voltage electrical signals to monitor the electrical integrity of the high-voltage connector. Because both the first low-voltage connector and the first high-voltage connector are located on the first connector, and both the second low-voltage connector and the second high-voltage connector are located on the second connector, the connection and disconnection of the first and second low-voltage connectors can be synchronized with the connection and disconnection of the first and second high-voltage connectors. Therefore, the high-voltage circuit can be controlled by monitoring changes in the electrical signals in the high-voltage interlock circuit.

[0053] Specifically, the end of the first low-voltage connector on the first connector is lower than the end of the first high-voltage connector. Therefore, when the first connector is moved toward the second connector for insertion, the end of the first high-voltage connector contacts the second high-voltage connector first, followed by the end of the first low-voltage connector. Therefore, during the mating operation, the first and second low-voltage connectors conduct electricity after the first and second high-voltage connectors, i.e., the order of conduction is high voltage first, then low voltage. During the separation operation, the first and second low-voltage connectors separate before the first and second high-voltage connectors. This ensures that when the high-voltage connector is abnormally disconnected, the first and second low-voltage connectors, which serve as the high-voltage interlock circuit, disconnect first. This allows the disconnection of the high-voltage interlock circuit to be detected first, allowing a controller (e.g., a battery management system controller) to disconnect the high-voltage circuit before the first and second high-voltage connectors separate, ensuring that no power is applied during insertion or removal. This ensures safety by disconnecting the low-voltage connector first and then the high-voltage connector in the event of a fault.

[0054] For example, when the low-voltage circuit is detected to be disconnected, it means that the first connector and the second connector are being separated, that is, the first high-voltage connector and the second high-voltage connector are about to be separated. If the high-voltage circuit is not de-energized at this time, the first high-voltage connector and the second high-voltage connector will be plugged and unplugged while powered on, which may cause danger. Therefore, after the low-voltage circuit is detected to be disconnected, the high-voltage circuit is immediately disconnected, thereby de-energizing the first high-voltage connector and the second high-voltage connector.

[0055] In a pair of low-voltage connectors in the related art, one pin consists of two pins and the other of a socket. The two pins are inserted into the sockets and form electrical contact with each other at one point. The applicant discovered during research that these high-voltage connectors require two electrical contacts to connect the high-voltage interlock circuit. A failure in one of these contacts can cause the entire high-voltage interlock circuit to disconnect, resulting in low reliability for the connector. Furthermore, since the two electrical contacts are each made by a pin and a socket, both the pin and the socket need to be conductive components to connect the high-voltage interlock circuit, which also results in high cost for the high-voltage connector.

[0056] In response to the above problems, the present application proposes a battery device and an electrical device, wherein the battery device includes a high-voltage connector, the high-voltage connector includes a first low-voltage connector and a second low-voltage connector, the first low-voltage connector includes a socket, and the second low-voltage connector includes a first pin and a second pin arranged opposite to each other. In the plugged-in state, the first pin and the second pin contact each other to form an electrical connection to connect the high-voltage interlocking circuit. That is to say, the first pin and the second pin of the present application contact each other to form an electrical contact and thus connect the high-voltage interlocking circuit. Compared with the related art, the position of the electrical contact is reduced from two places to one place, thereby reducing the risk of failure and improving the working reliability of the electrical connector.

[0057] refer to Figure 1 and Figure 2 , an embodiment of the present application provides an electrical device that uses a battery device 1000 as a power source. The electrical device includes a battery device 1000 and a driving device for providing driving force for the electrical device, and the battery device 1000 provides electrical energy to the driving device. The driving force of the device can be entirely electrical energy, or partly electrical energy and partly other energy sources (such as mechanical energy). For example, the device can also include a power source such as an engine that provides mechanical energy. As long as the device uses the battery device 1000 as a power source, it is within the scope of protection of this application.

[0058] The electrical equipment in the embodiments of the present application can be mobile equipment such as vehicles, ships, and small aircraft. Taking vehicles as an example, the vehicles in the embodiments of the present application can be new energy vehicles. The new energy vehicles can be pure electric vehicles, hybrid vehicles, or extended-range vehicles. Figure 1 A vehicle 2000 is shown using battery device 1000 as a power source.

[0059] refer to Figure 2 Battery assembly 1000 is disposed within vehicle 2000 and includes at least one battery cell 100. Vehicle 2000 is provided with a drive motor electrically connected to battery assembly 1000. Battery assembly 1000 provides electrical energy to the drive motor, which is then connected to the wheels via a transmission mechanism to propel the vehicle forward. Specifically, battery assembly 1000 can be disposed horizontally at the bottom of vehicle 2000.

[0060] The battery device 1000 of the embodiment of the present application includes at least one battery cell 100. Specifically in this embodiment, Figure 2 As shown, the battery device 1000 of this embodiment includes a plurality of battery cells 100 and a case 200 for accommodating the plurality of battery cells 100. The case 200 has a accommodating cavity, and the plurality of battery cells 100 are arranged in the accommodating cavity. Specifically, the case 200 of this embodiment is a box-shaped case and includes an upper case 210 and a lower case 220 for accommodating the battery cells 100. The upper case 210 and the lower case 220 are covered to form a accommodating cavity. In other embodiments not shown in the accompanying drawings, the case may also be a frame-shaped case, a disc-shaped case, or other shapes. Moreover, the shapes of the upper case 210 and the lower case 220 may also be different, which is not limited here. For example, the upper case 210 may also be a cover.

[0061] In some embodiments, the battery device 1000 is a battery pack. In other embodiments, the battery device 1000 is a battery module. When the battery device 1000 is a battery module, the housing is a module housing disposed around the battery module.

[0062] The battery cell 100 may include a lithium-ion secondary battery, a lithium-ion primary battery, a lithium-sulfur battery, a sodium-lithium-ion battery, a sodium-ion battery, or a magnesium-ion battery, etc. The embodiments of the present application are not limited to this. Multiple battery cells are electrically connected by connecting sheets. Multiple battery cells can be connected in series, in parallel, or in mixed connection under the connection of the connecting sheets. A battery cell refers to the smallest unit that makes up a battery device. A battery cell includes a shell, an electrode assembly, and other functional components. The inner cavity of the shell is used to accommodate the electrode assembly. The electrode assembly is the component in the battery cell where the electrochemical reaction occurs. The shell may contain one or more electrode assemblies. The electrode assembly is mainly formed by winding or stacking positive and negative electrode sheets. During the charge and discharge process of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tabs connect the poles to form a current loop. The electrode assembly can be a wound structure or a laminated structure, and the embodiments of the present application are not limited to this.

[0063] The voltage of the high-voltage circuit of the high-voltage connector in the embodiment of the present application is greater than 60V, and the voltage of the low-voltage circuit (high-voltage interlocking circuit) is less than 60V, for example, it can be 12V or 24V.

[0064] refer to Figures 2 to 6 In some embodiments of the present application, a battery device includes a housing 200, at least one battery cell 100, and a high-voltage connector 300. The at least one battery cell 100 is disposed within the housing 200, and the high-voltage connector 300 includes a first low-voltage connector 10 and a second low-voltage connector 20. The second low-voltage connector 20 is configured to be movably disposed relative to the first low-voltage connector 10 to switch between a plugged state and a detached state. In the plugged state, the second low-voltage connector 20 is plugged into the first low-voltage connector 10; in the detached state, the second low-voltage connector 20 is detached from the first low-voltage connector 10.

[0065] The first low-voltage connector 10 includes a socket 11, and the second low-voltage connector 20 includes a first pin 21a and a second pin 21b arranged opposite each other. When the second low-voltage connector 20 is in the plugged-in state, the first pin 21a and the second pin 21b are inserted into the socket 11 and contact each other to form an electrical connection, thereby completing the low-voltage circuit.

[0066] refer to Figure 3 and Figure 4 The high voltage connector includes a first low voltage connector 10 and a second low voltage connector 20. The first low voltage connector 10 is movable relative to the second low voltage connector 20, for example, referring to Figure 4, the first low-voltage connector 10 remains stationary, and the second low-voltage connector 20 is movably arranged relative to the first low-voltage connector 10 along the first direction X so that the electrical connector is in a plugged state or a separated state. Of course, in other embodiments, the first low-voltage connector 10 can be moved relative to the second low-voltage connector 20 or the two can move toward each other. The first low-voltage connector 10 moves relative to the second low-voltage connector 20 in a direction close to each other so that the two can be plugged together to put the electrical connector into the state as shown in FIG. Figure 3 The first low-voltage connector 10 moves relative to the second low-voltage connector 20 in a direction away from each other so that the two are disengaged so that the electrical connector enters as shown Figure 4 Shown in separated state.

[0067] refer to Figure 3 and Figure 4 In some embodiments, the first low-voltage connector 10 includes a socket 11, and the second low-voltage connector 20 includes a first pin 21a and a second pin 21b that are arranged opposite to each other. The first pin 21a and the second pin 21b are arranged opposite to each other in the second direction Y, and the second direction Y is arranged to intersect with the first direction X. Figure 3 In the specific embodiment shown, the second direction Y is perpendicular to the first direction X. When the second low-voltage connector 20 is in the plugged state, as shown in FIG. Figure 3 As shown, at least a portion of the first pin 21a and the second pin 21b of the second low-voltage connector 20 is inserted into the jack 11 of the first low-voltage connector 10. Specifically, one end of the first pin 21a and the second pin 21b close to the jack 11 enters the jack 11. When the second low-voltage connector 20 is in the separated state, as shown in FIG. Figure 4 As shown, the first pin 21 a and the second pin 21 b of the second low-voltage connector 20 are away from the insertion hole and are located outside the insertion hole 11 .

[0068] refer to Figure 3 In the plugged state, the first pin 21a and the second pin 21b are in contact to form an electrical connection. Figure 3 The figure shows the electrical contact point C between the first pin 21a and the second pin 21b. This means that the first pin 21a and the second pin 21b are in contact and electrically connected at this point, completing the low-voltage circuit. The key to this application lies in the contact between the two pins to complete the low-voltage circuit. Because the two pins are in contact to form an electrical connection, only one electrical contact is needed to complete the circuit. This low-voltage circuit is the high-voltage interlock circuit.

[0069] Here, the contact between the first pin 21a and the second pin 21b refers to the contact between a portion of the first pin 21a and a portion of the second pin 21b. Figure 3In the embodiment shown, the contact protrusion 212 of the first pin 21a contacts the contact protrusion 212 of the second pin 21b. Of course, in other embodiments, the pin body of the first pin 21a and the pin body of the second pin 21b may contact each other.

[0070] In some embodiments, the first low-voltage connector 10 is a plug and the second low-voltage connector 20 is a socket. In other embodiments, the first low-voltage connector 10 is a socket and the second low-voltage connector 20 is a plug. This application is not limited to this.

[0071] In the technical solution of the embodiment of the present application, when the second low-voltage connector 20 is in the plugged-in state, the first pin 21a and the second pin 21b are inserted into the socket 11 and the first pin 21a and the second pin 21b contact each other to form an electrical connection so that the low-voltage circuit is connected. In this way, as long as the first pin 21a and the second pin 21b contact each other, an electrical connection can be formed without the need to form two contacts with the socket respectively, which reduces the number of electrical contacts, reduces the risk of failure, improves the working reliability of the high-voltage connector, and thus ensures the reliability of the battery device.

[0072] In some embodiments, when the second low-voltage connector 20 moves relative to the first low-voltage connector 10 to switch the second low-voltage connector 20 from a separated state to a plugged state, the first pin 21a and the second pin 21b enter the socket 11 and at least portions of the first pin 21a and the second pin 21b approach each other and contact each other under the action of the hole wall of the socket 11.

[0073] refer to Figure 3 and Figure 4 The second low-voltage connector 20 includes two pins 21 arranged opposite to each other, the two pins being a first pin 21a and a second pin 21b. Figure 4 As shown, the two pins are arranged opposite to each other and are substantially parallel, and the distance between the two pins is substantially equal and greater than the distance between the opposite sides of the hole wall of the jack. Figure 3 As shown, after the ends of the two pins 21 enter the socket 11, the portions of the two pins 21 that enter the socket 11 are squeezed by the hole wall of the socket and move toward the center of the socket, so that the two pins move toward the center and approach each other, thereby making the two pins contact and form an electrical connection.

[0074] The mutual contact between the first pin 21a and the second pin 21b of the embodiment of the present application is naturally formed by the plugging action of the second low-voltage connector 20 into the socket of the first low-voltage connector 10. In other words, the embodiment of the present application utilizes the plugging action of the two plugs of the high-voltage connector itself to achieve mutual contact between the two pins without the need for other additional actions.

[0075] In the separated state, Figure 3 As shown, the distance between the two pins 21 is greater than the distance between the opposite sides of the hole wall of the socket 11, so that when the two pins 21 are inserted into the socket 11, the hole wall can exert a squeezing effect on the two pins 21. For example, in some embodiments, the socket is a square hole, and the distance between the two opposite side walls of the square hole is greater than the distance between the two pins 21 when they are separated.

[0076] During the process of switching the second low-voltage connector 20 of the embodiment of the present application from the separated state to the plugged state, the first pin 21a and the second pin 21b enter the socket 11 and at least parts of the first pin 21a and the second pin 21b approach each other and contact each other under the action of the hole wall of the socket 11. In this way, the mutual contact between the first pin 21a and the second pin 21b is naturally formed during the plugging process, and the force is derived from the hole wall of the socket. Therefore, compared with the related art, there is no need to make too many modifications to the structure of the high-voltage connector itself, thereby reducing costs and increasing the scope of application.

[0077] refer to Figure 3 and Figure 4 In some embodiments, at least one of the first and second pins 21a, 21b includes a contact protrusion 212. The contact protrusion 212 is configured to protrude toward the other pin. When switching from the separated state to the plugged state, the ends of the first and second pins 21a, 21b approach each other under the influence of the wall of the socket 11, causing the contact protrusion 212 to contact the other pin.

[0078] refer to Figure 3 In some embodiments, the pin 21 includes a pin body 211 and a contact member disposed on the pin body 211. The contact member is disposed obliquely on the pin body 211, with the free end of the contact member extending toward the other pin. In this case, the contact protrusion 212 is formed by the contact member. The contact member can be integrally formed with the pin body 211 or connected to the pin body 211 by other means (such as welding). In other embodiments not shown in the figures, the pin 21 includes a pin body 211, and the pin body 211 is provided with a bulge protruding toward the other pin. This bulge forms the contact protrusion. In other words, the contact protrusion can be either a contact member disposed on the pin body or a raised portion formed on the pin body.

[0079] In some embodiments, reference Figure 3Both pins include a contact protrusion 212. When plugged in, the two contact protrusions 212 of the two pins contact each other. In other embodiments, the first pin 21a may include a contact protrusion 212, while the second pin 21b includes a pin body. In this way, when plugged in, the contact protrusion 212 of the first pin 21a directly contacts the pin body of the second pin 21b to form an electrical connection. Of course, the first pin 21a may also include a pin body, while the second pin 21b includes a pin body and a contact protrusion 212 provided on the pin body.

[0080] The technical solution of the embodiment of the present application is to provide a contact protrusion protruding toward the side of the other pin, so that the distance between the contact protrusion and the other pin is closer, and it is easier to contact with the other pin under the squeezing action of the hole wall to form an electrical connection, thereby improving the sensitivity of the high-voltage interlocking circuit of the high-voltage connector.

[0081] In some embodiments, reference Figure 3 and Figure 4 The second low-voltage connector 20 moves relative to the first low-voltage connector 10 along the first direction X to switch the second low-voltage connector 20 from the separated state to the plugged state. The first pin 21a and the second pin 21b are arranged opposite to each other in the second direction Y, which is perpendicular to the first direction X.

[0082] refer to Figure 3 and Figure 4 The second low-voltage connector 20 moves relative to the first low-voltage connector 10 along the first direction X and moves in a direction close to the first low-voltage connector 10 so that the pins of the second low-voltage connector 20 are inserted into the jacks of the first low-voltage connector 10, and the second low-voltage connector 20 enters the plugged state; the second low-voltage connector 20 moves relative to the first low-voltage connector 10 along the first direction X and moves away from the first low-voltage connector 10 so that the pins of the second low-voltage connector 20 are disengaged from the jacks, and the second low-voltage connector 20 enters the separated state.

[0083] The first pin 21 a and the second pin 21 b are arranged opposite to each other in the second direction Y. The first pin 21 a and the second pin 21 b extend substantially along the first direction X. The second direction Y is perpendicular to the first direction X.

[0084] The second low-voltage connector 20 moves relative to the first low-voltage connector 10 in the first direction X, inserting the first pin 21a and the second pin 21b into the socket 11. That is, the axial direction of the socket 11 also extends along the first direction X, allowing the second low-voltage connector 20 to move in the first direction X to enter or exit the socket 11. The opposing sides of the walls of the socket 11 are arranged relative to each other in the second direction Y. Therefore, the first and second pins are arranged relative to each other in the second direction Y, so that the opposing sides of the walls act on the first and second pins, respectively, and thus the first and second pins approach each other, increasing the speed of closure and, in other words, accelerating electrical contact.

[0085] In the embodiment of the present application, the first pin 21a and the second pin 21b are arranged relative to each other in the second direction Y, and the second direction Y is perpendicular to the movement direction of the second low-voltage connector 20, that is, the first direction X. In this way, the squeezing force of the hole wall on the first pin 21a and the second pin 21b also extends along the second direction Y. It is the force that brings the two pins closer to each other, allowing the two pins to approach each other more quickly to form an electrical contact connection, thereby further improving reliability.

[0086] In some embodiments, the wall of the jack 11 is made of insulating material.

[0087] The connection of the high-voltage interlock circuit in the embodiment of the present application is formed by the contact electrical connection between the first pin 21a and the second pin 21b. Therefore, the socket 11 mainly serves to accommodate the two pins and apply force to the pins. Therefore, the hole wall of the socket 11 can be set to an insulating material, thereby avoiding problems such as malfunctions caused by electrical connections other than the electrical connection between the above two pins, thereby improving working stability.

[0088] In some embodiments, at least one of the first pin 21a and the second pin 21b includes a pin body 211 and a contact protrusion 212 provided on the pin body 211. The contact protrusion 212 is configured to protrude toward the other pin so that the contact protrusion 212 contacts the other pin in the plugged state.

[0089] refer to Figure 3In some embodiments, the pin 21 includes a pin body 211 and a contact member disposed on the pin body 211. The contact member is disposed obliquely on the pin body 211, with the free end of the contact member extending toward the other pin. In this case, the contact protrusion 212 is formed by the contact member. The contact member can be integrally formed with the pin body 211 or connected to the pin body 211 by other means (such as welding). In other embodiments not shown in the figures, the pin 21 includes a pin body 211, and the pin body 211 is provided with a bulge protruding toward the other pin. This bulge forms the contact protrusion. In other words, the contact protrusion can be either a contact member disposed on the pin body or a raised portion formed on the pin body.

[0090] The technical solution of the embodiment of the present application is to provide a contact protrusion protruding toward the side of the other pin, so that the distance between the contact protrusion and the other pin is closer, and it is easier to contact with the other pin under the squeezing action of the hole wall to form an electrical connection, thereby improving the sensitivity of the high-voltage interlocking circuit of the high-voltage connector.

[0091] In some embodiments, the contact protrusion 212 includes a contact piece obliquely disposed on the pin body 211. The first end of the contact piece is connected to the pin body 211, and the second end of the contact piece is formed as a free end, so that the length of the contact piece can be adaptively adjusted according to the size of different sockets.

[0092] Specifically, the contact element may be a contact spring.

[0093] refer to Figure 6 In some embodiments, the first pin 21a and the second pin 21b each include a pin body 211 and a contact member disposed on the pin body 211. The contact member comprises a bent structure and includes a first bent section 212a, a second bent section 212b, and a transition section 212c connecting the first bent section 212a and the second bent section 212b. In the mated state, the transition sections 212c of the contacts of the first pin 21a and the second pin 21b contact each other.

[0094] like Figure 6 As shown, the pin bodies 211 of the first and second pins 21a and 21b are each provided with a contact element. The contact element is a bent structure. The first end of the contact element is connected to the pin body 211, and the second end of the contact element is free. From the first end to the second end of the contact element, the contact element includes a first bent section 212a, a transition section 212c, and a second bent section 212b. The second bent section 212b forms an obtuse angle with the first bent section 212a.

[0095] When the first pin 21a and the second pin 21b of the embodiment of the present application are in contact, the transition section 212c of the contact piece contacts each other. The transition sections 212c of the two pins are in contact with each other, and the contact area is larger, so the electrical connection is more reliable.

[0096] The transition section 212c may be an arc-shaped transition section.

[0097] refer to Figure 5 In some embodiments, the pin body 211 includes a bent structure. The bent structure includes a first segment 211a and a second segment 211b. The second segment 211b is disposed at an end of the first segment 211a that is closer to the socket 11. The first end of the second segment 211b is connected to the first segment 211a, and the second end of the second segment 211b forms a free end. From the first end to the second end of the second segment 211b, the second segment 211b gradually approaches the middle between the first and second pins to form a constricted shape.

[0098] The pin body 211 may include a curved structure, or the outer wall of the pin body 211 may be curved. For example, in some embodiments, the pin body 211 is a pin sheet, and only the outer side of the pin sheet end is tapered, or it may be formed into a conical shape. Therefore, the conical shape defined herein refers to the outer wall of the pin body 211 being retracted inward.

[0099] like Figure 4 As shown, the ends of the two pin bodies 211 in the embodiment of the present application, which are close to the socket 11, are formed into a concave shape. In this way, during the plugging operation, the concave shape enters the socket first, and its width is smaller, making it easier to insert into the socket. In addition, the concave shape guides the pin bodies 211 into the socket 11 during the insertion process, making it easier to operate. Furthermore, the pin bodies 211 in the embodiment of the present application are configured as bent parts, so that the pin bodies 211 have a bend located between the first segment 211a and the second segment 211b. When in the plugged state, the bend abuts against the wall of the socket 11, which increases the abutment stability, thereby maintaining the second low-voltage connector 20 in the plugged state and improving stability.

[0100] In order to further improve the convenience of plugging the pin into the jack, in some embodiments, reference Figure 4 The opening end of the jack 11 is provided with a guide surface 111. The guide surface 111 is an inclined surface.

[0101] In the embodiment of the present application, the opening end of the socket 11 is set as an inclined guide surface 111, so that the pin slides inward along the guide surface 111 when entering the socket 11. The guide surface 111 guides the entry of the pin, making it easier to plug in and reducing the difficulty of plugging in for the user.

[0102] refer to Figures 3 to 6 In some embodiments, the contact protrusion 212 is provided on the first segment 211 a .

[0103] In this embodiment, the contact protrusions 212 are positioned on two substantially parallel first segments 211a, rather than on the tapered second segments 211b. This prevents the two contact protrusions from contacting before the connector is fully plugged in. In the unplugged state, the first segments 211a of the two pins are substantially parallel to each other, allowing the contact protrusions 212 to separate. When switching to the plugged state, the first segments of the two pins gradually move closer together, allowing the two contact protrusions 212 to approach each other, thus preventing erroneous connection caused by contact between the two contact protrusions in the unplugged state.

[0104] In some embodiments, reference Figure 4 The high-voltage connector further includes a first high-voltage connector 30 and a second high-voltage connector 40 , and the first low-voltage connector 10 and the second low-voltage connector 20 are separated and engaged in conjunction with the separation and engagement of the first high-voltage connector 30 and the second high-voltage connector 40 .

[0105] The high-voltage connector includes a first connector and a second connector that are plugged into each other. The first connector is provided with a first high-voltage connector 30 and a first low-voltage connector 10, and the second connector is provided with a second high-voltage connector 40 and a second low-voltage connector 20. The first connector and the second connector are plugged into each other to electrically connect the first high-voltage connector 30 and the second high-voltage connector 40, thereby connecting the cable connected to the first high-voltage connector 30 and the cable connected to the second high-voltage connector 40; the first connector and the second connector are separated to separate the first high-voltage connector 30 and the second high-voltage connector 40, thereby disconnecting the cable connected to the first high-voltage connector 30 and the cable connected to the second high-voltage connector 40.

[0106] When the first high-voltage connector and the second high-voltage connector are electrically connected, the high-voltage circuit is connected. The high-voltage interlock circuit uses a low-voltage electrical signal to detect the electrical integrity of the high-voltage connector. Since the first low-voltage connector and the first high-voltage connector are both provided on the first connector, and the second low-voltage connector and the second high-voltage connector are both provided on the second connector, the connection between the first low-voltage connector and the second low-voltage connector can be changed in conjunction with the connection between the first high-voltage connector and the second high-voltage connector, and the separation between the first low-voltage connector and the second low-voltage connector can be changed in conjunction with the separation between the first high-voltage connector and the second high-voltage connector. Therefore, the continuity of the high-voltage circuit can be determined by detecting changes in the electrical signal in the high-voltage interlock circuit.

[0107] The following is based on Figures 3 to 6The structure of a high-voltage connector of a battery device according to a specific embodiment of the present application is described in detail.

[0108] like Figure 6 As shown, the high-voltage connector 300 of this embodiment includes a first high-voltage connector 30, a second high-voltage connector 40, a first low-voltage connector 10, and a second low-voltage connector 20. The first high-voltage connector 30 and the first low-voltage connector 10 are both provided on the first connector, and the second high-voltage connector 40 and the second low-voltage connector 20 are both provided on the second connector.

[0109] like Figure 3 As shown, the second low-voltage connector 20 includes two pins 21, namely a first pin 21a and a second pin 21b. Each pin 21 includes a pin body 211 and a contact protrusion 212 provided on the pin body 211. The first low-voltage connector 10 includes a socket 11.

[0110] like Figure 3 and Figure 4 As shown, when the second low-voltage connector 20 is in the plugged state, the two pins 21 are inserted into the socket 11. The two pins 21 are squeezed by the hole wall of the socket 11 and move closer to each other, so that the two contact protrusions 212 contact each other to generate an electrical connection to connect the high-voltage interlocking circuit.

[0111] The high-voltage connector of this embodiment has two pins that are electrically connected to each other after being plugged into the connector head. This simplifies the product assembly process and reduces costs. Furthermore, the contact point is reduced from two to one, reducing the risk of failure.

[0112] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and components may be substituted with equivalents without departing from the scope of the present application. 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. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A battery device, characterized in that: include: Box; At least one battery cell (100) is disposed in the box; and A high-voltage connector is connected to the box, and the high-voltage connector includes A first low-voltage connector (10); and a second low-voltage connector (20), the second low-voltage connector (20) being configured to be movably arranged relative to the first low-voltage connector (10) to switch between a plugged-in state and a disconnected state, wherein in the plugged-in state, the second low-voltage connector (20) is plugged into the first low-voltage connector (10); and in the disconnected state, the second low-voltage connector (20) is disconnected from the first low-voltage connector (10); The first low-voltage connector (10) includes a socket (11), and the second low-voltage connector (20) includes a first pin (21a) and a second pin (21b) that are arranged opposite to each other. When the second low-voltage connector (20) is in a plugged-in state, the first pin (21a) and the second pin (21b) are inserted into the socket (11), and the first pin (21a) and the second pin (21b) contact each other to form an electrical connection so that the low-voltage circuit is connected.

2. The battery device according to claim 1, wherein: During the process in which the second low-voltage connector (20) moves relative to the first low-voltage connector (10) to switch the second low-voltage connector (20) from the separated state to the plugged state, the first pin (21a) and the second pin (21b) enter the jack (11) and at least parts of the first pin (21a) and the second pin (21b) approach each other and contact each other under the action of the hole wall of the jack (11).

3. The battery device according to claim 2, characterized in that At least one of the first plug pin (21a) and the second plug pin (21b) includes a contact protrusion (212), and the contact protrusion (212) is constructed to protrude toward one side of the other plug pin. When switching from the separated state to the plugged state, the ends of the first plug pin (21a) and the second plug pin (21b) approach each other under the action of the hole wall of the socket (11) so that the contact protrusion (212) contacts the other plug pin.

4. The battery device according to claim 2, wherein: The second low-voltage connector (20) moves relative to the first low-voltage connector (10) along a first direction (X) to switch the second low-voltage connector (20) from the separated state to the plugged state, and the first pin (21a) and the second pin (21b) are arranged relative to each other in a second direction (Y), and the second direction (Y) is perpendicular to the first direction (X).

5. The battery device according to any one of claims 1 to 4, characterized in that The hole wall of the jack (11) is made of insulating material.

6. The battery device according to any one of claims 1 to 4, characterized in that At least one of the first plug pin (21a) and the second plug pin (21b) comprises a plug pin body (211) and a contact protrusion (212) provided on the plug pin body (211), wherein the contact protrusion (212) is configured to protrude toward one side of the other plug pin so that the contact protrusion (212) and the other plug pin contact each other in the plugged state.

7. The battery device according to claim 6, characterized in that The contact protrusion (212) comprises a contact piece obliquely arranged on the pin body (211).

8. The battery device according to claim 7, characterized in that The first plug pin and the second plug pin both comprise the plug pin body and a contact piece arranged on the plug pin body, the contact piece comprises a bending structure and includes a first bending section (212a), a second bending section (212b), and a transition section (212c) connecting the first bending section (212a) and the second bending section (212b), and in the plugged state, the transition sections (212c) of the contact pieces of the first plug pin and the second plug pin contact each other.

9. The battery device according to claim 8, characterized in that The transition section includes an arc-shaped transition section.

10. The battery device according to claim 6, wherein: The pin body (211) includes a bending part, which includes a first segment (211a) and a second segment (211b), wherein the second segment (211b) is arranged at an end of the first segment (211a) close to the socket (11), and the first end of the second segment (211b) is connected to the first segment (211a), and the second end of the second segment (211b) forms a free end, and in a direction from the first end to the second end of the second segment (211b), the second segment (211b) gradually approaches the middle between the first pin (21a) and the second pin (21b) to form a constricted shape.

11. The battery device according to claim 10, characterized in that The contact protrusion (212) is arranged on the first segment (211a).

12. The battery device according to any one of claims 1 to 4, characterized in that The opening end of the jack (11) is provided with a guide surface (111), and the guide surface (111) is an inclined surface.

13. The battery device according to claim 1, wherein: The high-voltage connector further comprises a first high-voltage connector (30) and a second high-voltage connector (40); the first low-voltage connector (10) and the second low-voltage connector (20) are engaged in a linkage manner as the first high-voltage connector (30) and the second high-voltage connector (40) are engaged; and the first low-voltage connector (10) and the second low-voltage connector (20) are separated in a linkage manner as the first high-voltage connector (30) and the second high-voltage connector (40) are separated.

14. An electrical device, characterized in that: A battery device comprising the battery device according to any one of claims 1 to 13.

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