Connection device

Abstract

The application discloses a connecting device. The connecting device comprises a housing, a first connecting pin and a second connecting pin, the first connecting pin and the second connecting pin are both mounted on the housing, the first connecting pin and the second connecting pin are both suitable for connecting an OBD interface of a vehicle, and the first connecting pin and the second connecting pin are both suitable for connecting a charging device to transmit electric energy of the charging device to a storage battery of the vehicle. According to the connecting device, electric energy of the charging device can be transmitted to the storage battery of the vehicle through the OBD interface of the vehicle, operation is simple, a hood does not need to be opened, and the vehicle does not need to be started.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more specifically, to a connection device. Background Technology

[0002] With the increasing number of electronic devices (such as anti-theft systems, onboard computers, and telematics modules) installed in vehicles, these devices continue to drain the battery even when the vehicle is off and parked, resulting in "quiescent current" consumption. If a vehicle is not used for an extended period (such as weeks or months), the battery will gradually deplete, eventually leading to a deep discharge. A deeply discharged battery not only affects the vehicle's ability to start but also significantly shortens the battery's lifespan and can even cause irreversible damage.

[0003] In some related technologies, external charging devices (such as solar trickle chargers) are plugged into the cigarette lighter socket to replenish the battery. However, the cigarette lighter socket automatically disconnects power after the vehicle is turned off and locked, failing to provide a continuous power channel. Other technologies connect the positive and negative clips of the external charging device directly to the positive and negative terminals of the battery. However, each use requires opening the engine hood to connect the battery, which is cumbersome and inconvenient. Furthermore, this charging method poses safety hazards, such as the risk of short circuits and poor contact between the exposed positive and negative clips and the battery terminals. Additionally, rainwater and dust can easily enter the engine compartment, or the charging wires can be damaged by the engine hood. Utility Model Content

[0004] This application aims to at least partially address one of the aforementioned technical problems in the prior art. To this end, this application proposes a connection device capable of transmitting electrical energy from a charging device to the vehicle's battery via the vehicle's OBD interface.

[0005] The connection device according to an embodiment of this application includes: a housing, a first connection pin, and a second connection pin. The first connection pin and the second connection pin are both mounted on the housing. The first connection pin and the second connection pin are both adapted to connect to the OBD interface of a vehicle. The first connection pin and the second connection pin are also adapted to connect to a charging device to transfer electrical energy from the charging device to the battery of the vehicle.

[0006] The connection device according to the embodiments of this application can transmit the electrical energy of the charging device to the vehicle battery through the vehicle's OBD interface. It is simple to operate, does not require opening the engine hood, and does not require starting the vehicle.

[0007] According to some embodiments of this application, the connection device further includes a first connector and a second connector, wherein the first connection pin is connected to the first connector, the second connection pin is connected to the second connector, and the first connection pin and the second connection pin are adapted to connect to a charging device through the first connector and the second connector.

[0008] According to some embodiments of this application, the connecting device connects a charging device and a battery to form a charging circuit. The connecting device further includes a fuse unit connected between the first connecting pin and the first connector and / or between the second connecting pin and the second connector. When the current flowing through the fuse unit reaches a rated current threshold, the fuse unit disconnects the charging circuit.

[0009] According to some embodiments of this application, the housing includes: a first housing portion and a second housing portion, the first connecting pin and the second connecting pin are both mounted on the first housing portion, the second housing portion is connected to the first housing portion, and the safety unit is disposed inside the second housing portion.

[0010] According to some embodiments of this application, the first connection pin, the second connection pin, and the first housing are injection molded as a single integrated structure.

[0011] According to some embodiments of this application, the second shell portion includes a plurality of segments that are fastened together, and the first shell portion has a first mounting groove in which the plurality of segments are fitted.

[0012] According to some embodiments of this application, the fuse unit is a fuse, which blows when the current flowing through the fuse reaches the rated current threshold of the fuse; or, the fuse unit is a circuit board.

[0013] According to some embodiments of this application, the connecting device further includes a cover plate, which is detachably mounted on the second housing portion, and the safety unit is a fuse, which is disposed on the cover plate.

[0014] According to some embodiments of this application, the connecting device further includes a first clamp and a second clamp, both of which are conductors. The first clamp and the second clamp are disposed on the second housing portion, spaced apart. The first clamp is adapted to be connected to one end of the fuse, and the second clamp is adapted to be connected to the other end of the fuse. The fuse is connected to the first connecting pin through the first clamp, and the fuse is connected to the first connecting member through the second clamp.

[0015] According to some embodiments of this application, the second shell portion includes a first portion and a second portion, the first portion and the second portion are connected, and the first clamp, the second clamp and the second portion are injection molded as an integral structure.

[0016] According to some embodiments of this application, both the first clamp and the second clamp include a clamp portion and a pin portion. The clamp portion has a receiving space for accommodating the fuse. The pin portion is connected to the clamp portion. The pin portion of the first clamp is connected to the first connecting pin. The pin portion of the second clamp is connected to the first connector. The second connecting pin is connected to the second connector.

[0017] According to some embodiments of this application, the clamp part is an elastic clamp part, the clamp part has a slot, the fuse is adapted to enter and exit the receiving space through the slot, and when the fuse is inserted into the receiving space, the width of the slot is smaller than the diameter of the fuse.

[0018] According to some embodiments of this application, the maximum dimension of the first housing portion in a first direction is 40mm to 45mm; and / or, the first housing portion has a groove, at least a portion of the first connecting pin and at least a portion of the second connecting pin extend into the groove, and the maximum depth dimension of the groove in a second direction is 10mm to 20mm; and / or, the maximum dimension of the first housing portion in a third direction is 17mm to 25mm; wherein, the first direction, the second direction and the third direction are perpendicular to each other.

[0019] According to some embodiments of this application, the connecting device further includes a socket disposed at the end of the first connector and the second connector away from the housing, and the first connector and the second connector are connected to a charging device via the socket.

[0020] According to some embodiments of this application, both the first connector and the second connector are connecting wires. The connecting device further includes a wire harness protective sheath and a wire harness clip. The wire harness protective sheath is installed on the housing and covers the first connector and the second connector. The wire harness protective sheath is fastened to the housing by the wire harness clip.

[0021] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0022] Figure 1 This is a perspective view of the connecting device according to an embodiment of this application;

[0023] Figure 2 This is a perspective view of the connecting device according to an embodiment of this application from another angle;

[0024] Figure 3 This is a perspective view of the connecting device according to an embodiment of this application from another angle;

[0025] Figure 4 This is an exploded view of the connection device according to an embodiment of this application;

[0026] Figure 5 This is a perspective view of a portion of the structure of the connecting device according to an embodiment of this application;

[0027] Figure 6 This is a top view of the connecting device according to an embodiment of this application;

[0028] Figure 7 yes Figure 6 A schematic diagram of the cross-section after cutting along the AA section;

[0029] Figure 8 This is a three-dimensional schematic diagram of the cover plate;

[0030] Figure 9 This is an assembly diagram of the cover plate, fuse, first clamp, and second clamp;

[0031] Figure 10 This is a three-dimensional schematic diagram of the first clamp;

[0032] Figure 11 This is a three-dimensional schematic diagram of the second clamp;

[0033] Figure 12 This is a three-dimensional schematic diagram of the second division;

[0034] Figure 13 This is a schematic diagram of a connection device connecting a charging device and a battery according to an embodiment of this application;

[0035] Figure 14 This is a schematic diagram showing the connection between the circuit board, photovoltaic panel, and battery.

[0036] Figure label:

[0037] Connecting device 10, first connecting pin 1, second connecting pin 2, housing 3, first housing portion 31, first mounting groove 311, recess 312, second housing portion 32, first segment 321, first connecting post 3211, first connecting hole 32111, first snap-fit ​​hole 3212, second segment 322, second connecting post 3221, second connecting hole 32211, slot 3222, first insertion hole 3223, second insertion hole 3224, second snap-fit ​​hole 3225, limiting surface 3226, cable 40, first connector 41, second connector Component 42, wire harness protective sheath 43, wire harness clip 5, fuse 6, cover plate 7, body 71, connecting part 72, handle part 73, fixing part 74, clip hole 741, stop part 75, first support arm 751, second support arm 752, stop surface 7521, first clamp 81, first clamp part 811, first pin part 812, first accommodating space 813, first bayonet 814, second clamp 82, second clamp part 821, second pin part 822, second accommodating space 823, second bayonet 824, charging device 20, battery 30. Detailed Implementation

[0038] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0039] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] The following is combined with Figures 1-14 The present application describes in detail the connection device 10 and the vehicle having the connection device 10 according to embodiments thereof.

[0041] Reference Figures 4-6 As shown, the connection device 10 according to the embodiment of this application may include a housing 3, a first connection pin 1 and a second connection pin 2. The first connection pin 1 and the second connection pin 2 are both mounted on the housing 3. The first connection pin 1 and the second connection pin 2 are both adapted to connect to the vehicle's OBD interface (On-Board Diagnostics). The first connection pin 1 and the second connection pin 2 are also adapted to connect to the charging device 20 to transfer the electrical energy of the charging device 20 to the vehicle's battery 30.

[0042] Specifically, after connecting the charging device 20 to the vehicle's OBD interface using the connection device 10 of this application, the electrical energy of the charging device 20 can be transferred to the vehicle's battery 30. European and American cars manufactured after 2000 and domestically produced cars manufactured after 2010 are all equipped with the OBD-II standard interface as standard, and the OBD-II standard interface has become the mainstream configuration globally, with over 90% of passenger vehicles sold worldwide adopting the unified OBD-II standard interface (hereinafter referred to as OBD interface). The connection device 10 of this application is suitable for vehicles with OBD interfaces, which clarifies the compatibility range of the connection device 10, allowing users to clearly understand whether their vehicle is compatible with the connection device 10 of this application, thus improving product targeting and user experience.

[0043] It is understood that the OBD interface of the vehicle mentioned in this application is the OBD-II standard interface mentioned above.

[0044] The OBD interface can be used for fault diagnosis, such as reading fault codes (DTCs) from systems like the engine, transmission, ABS, and airbags, helping repair personnel quickly locate problems. The OBD interface can also be used for real-time data monitoring, such as reading real-time operating parameters like vehicle speed, RPM, fuel consumption, and oxygen sensor data, for repair or modification / tuning (e.g., connecting an external HUD, dashcam, etc.).

[0045] The OBD interface is directly powered by the vehicle battery 30 (12V battery). Even when the vehicle is off, some pins remain constantly powered (e.g., pin 16 is +12V power, and pins 4 / 5 are ground). Because the OBD interface has this constant-power characteristic, the connection device 10 of this application fully utilizes this characteristic to ensure that the power channel remains open even after the vehicle is turned off and locked, providing a continuous power connection to the battery 30. The vehicle's start / stop status does not affect the charging device 20's charging of the battery 30. In other words, it works whether the vehicle is off or on, and avoids the risk of accidentally connecting to other circuits.

[0046] The vehicle's OBD interface is usually located under the steering wheel, so connecting the connector 10 to the vehicle's OBD interface does not require opening the engine hood, thus preventing rainwater and dust from entering the engine compartment or the wires from being damaged by the engine hood. For example, the vehicle's OBD interface can be located on the interior panel under the steering wheel.

[0047] The vehicle's OBD interface has 16 pins, namely Pin 1 to Pin 16. The first connection pin 1 can be connected to Pin 16 (+12V constant power), and the second connection pin 2 can be connected to Pin 4 (chassis ground) or Pin 5 (signal ground). Both the first connection pin 1 and the second connection pin 2 are conductors.

[0048] Both the first connection pin 1 and the second connection pin 2 can be pin-structured, so that after the connection device 10 is plugged into the OBD interface, it is convenient for the first connection pin 1 and the second connection pin 2 to be electrically connected to the corresponding pin.

[0049] When connecting the first connection pin 1 and the second connection pin 2 to the charging device 20, the first connection pin 1 and the charging device 20 can be directly connected, or they can be connected through an intermediate conductive element.

[0050] In specific embodiments, the intermediate conductive element can be a rigid conductor, such as a copper needle, aluminum needle, or silver needle, or it can be a wire, such as a copper wire, aluminum wire, or silver wire. For example, the intermediate conductive element may include the first connector 41 and the second connector 42 mentioned below.

[0051] It should be noted that "battery 30" is a 12V starting battery, specifically a 12V starting lead-acid battery, a 12V starting lithium iron phosphate battery, a 12V starting ternary lithium battery, etc. The vehicle mentioned in this application can be a gasoline-powered vehicle or an electric vehicle. Battery 30 is one of the core components of the vehicle's electrical system. Its main function is to provide power to the vehicle's low-voltage electrical system, ensuring engine starting and the normal operation of onboard electronic equipment.

[0052] In some related technologies, external charging devices are plugged into the cigarette lighter socket to replenish the battery. However, the cigarette lighter socket automatically disconnects power after the vehicle is turned off and locked, failing to provide a continuous power channel. Other methods connect the positive and negative clips of the external charging device directly to the battery's positive and negative terminals. However, this requires opening the hood each time to connect the battery, which is aesthetically unappealing. Repeated operations are necessary for temporary vehicle movement or inspection, making the process cumbersome and inconvenient. Furthermore, this charging method poses safety hazards, such as the risk of short circuits and poor contact between the exposed positive and negative clips and the battery terminals. Non-professional operation may cause sparks. Additionally, this charging method requires the hood to be partially closed, which may allow rainwater and dust to enter or damage the charging cables.

[0053] The connection device 10 according to the embodiments of this application can transmit the electrical energy of the charging device 20 to the vehicle battery 30 through the vehicle's OBD interface. The operation is simple, without opening the engine hood, and the vehicle does not need to be started.

[0054] In some embodiments of this application, reference is made to Figures 1-2 , Figures 4-5As shown, the connection device 10 also includes a first connector 41 and a second connector 42. The first connection pin 1 is connected to the first connector 41, and the second connection pin 2 is connected to the second connector 42. The first connection pin 1 and the second connection pin 2 are adapted to connect to the charging device 20 through the first connector 41 and the second connector 42.

[0055] Specifically, the first connecting pin 1 and the first connecting member 41 can be directly connected to achieve an electrical connection, or they can be indirectly connected through an intermediate conductive member to achieve an electrical connection; the second connecting pin 2 and the second connecting member 42 can be directly connected to achieve an electrical connection, or they can be indirectly connected through an intermediate conductive member to achieve an electrical connection. Both the first connecting member 41 and the second connecting member 42 are conductive, so that when needed, the electrical energy of the charging device 20 can be transferred to the vehicle's battery 30 through the first connecting pin 1 and the second connecting pin 2.

[0056] Since the charging device 20 is usually far from the OBD interface, by setting the first connector 41 and the second connector 42, the charging device 20 can be arranged at a position far from the first connection pin 1 and the second connection pin 2. For example, when the charging device 20 is a solar panel, the charging device 20 can be arranged in a position that can be exposed to sunlight, so as to facilitate the use of solar energy to generate electricity.

[0057] In some embodiments of this application, reference is made to Figure 4 , Figure 7 , Figure 9 , Figure 13 As shown, the connecting device 10 connects the charging device 20 and the battery 30 to form a charging circuit. The connecting device 10 also includes a fuse unit, which is connected between the first connecting pin 1 and the first connector 41 and / or between the second connecting pin 2 and the second connector 42. When the current flowing through the fuse unit reaches the rated current threshold, the fuse unit disconnects the charging circuit. Specifically, the fuse unit can be provided only between the first connecting pin 1 and the first connector 41, or only between the second connecting pin 2 and the second connector 42, or both between the first connecting pin 1 and the first connector 41 and between the second connecting pin 2 and the second connector 42. By providing a fuse unit, the charging circuit can be protected, preventing faults such as short circuits and overloads.

[0058] In some embodiments of this application, reference is made to Figures 1-6 As shown, the housing 3 may include a first housing portion 31 and a second housing portion 32. The first connecting pin 1 and the second connecting pin 2 are both installed in the first housing portion 31. The second housing portion 32 is connected to the first housing portion 31. The safety unit is disposed in the second housing portion 32.

[0059] In some embodiments not shown in the figures, the second shell portion 32 and the first shell portion 31 can be connected as an integral structure, which helps to reduce assembly steps.

[0060] In some embodiments of this application, such as Figures 1-6 As shown, the second shell 32 and the first shell 31 are separate structures. The second shell 32 and the first shell 31 are assembled to connect them. In this way, the second shell 32 and the first shell 31 are processed separately and then assembled, which simplifies the processing technology of the shell 3 and allows the shell 3 to be designed to be more complex.

[0061] In some embodiments of this application, such as Figures 3-5 , Figure 12 As shown, the first housing 31 has multiple first connecting posts 3211, each of which has a first connecting hole 32111. The second housing 32 has multiple second connecting posts 3221, each of which has a second connecting hole 32211. The number of second connecting posts 3221 and the position of first connecting posts 3211 are the same, and the number of second connecting holes 32211 and the position of first connecting holes 32111 are the same. The second connecting hole 32211 can be a threaded hole, while the first connecting hole 32111 can be a smooth hole. After the bolt passes through the first connecting hole 32111, it is tightened into the second connecting hole 32211. This allows for the connection and fixation of the second housing 32 and the first housing 31. When it is necessary to disassemble the second housing 32 and the first housing 31, only the bolt needs to be removed, making assembly and disassembly convenient.

[0062] In some embodiments of this application, reference is made to Figures 4-5 As shown, the first connecting pin 1, the second connecting pin 2, and the first housing 31 are integrally injection molded. In this way, the first connecting pin 1 and the second connecting pin 2 are not easily detached from the first housing 31, the structure is more stable and reliable, and the first housing 31 can provide a certain degree of protection for the first connecting pin 1 and the second connecting pin 2, making them less likely to break.

[0063] In some other embodiments of this application, the first connection pin 1 and the second connection pin 2 are detachably mounted on the first housing 31, which facilitates the replacement of vulnerable parts.

[0064] In some embodiments of this application, reference is made to Figures 1-5 As shown, the second shell portion 32 includes multiple segments that are interlocked, and at least one of the segments is fixed to the first shell portion 31. The process of machining each segment separately before assembly simplifies the manufacturing process of the second shell portion 32, allowing for a more complex design.

[0065] In some embodiments of this application, reference is made to Figures 4-5 As shown, the first housing portion 31 has a first mounting groove 311, and multiple portions are fitted into the first mounting groove 311. Therefore, the second housing portion 32 is not easily separated from the first housing portion 31, and the first mounting groove 311 can position the second housing portion 32, resulting in a relatively accurate relative position between the second housing portion 32 and the first housing portion 31. Figure 4 In the example, the multiple portions include a first portion 321 and a second portion 322, which are fitted into the first mounting groove 311. In some embodiments not shown in the figures, the number of portions may be three, four, five or more.

[0066] In some embodiments of this application, the fuse unit is fuse 6. When the current flowing through fuse 6 reaches the rated current threshold of fuse 6, fuse 6 melts. When a short circuit or overload occurs in the charging circuit, the current in the charging circuit surges, and fuse 6 melts due to overheating, preventing the wires from burning out or the battery 30 or charging equipment 20 from being damaged. The rated current threshold of fuse 6 can be 2A, 3A, or other values.

[0067] Fuse 6 can be a ceramic fuse. A ceramic fuse is connected in series in the charging circuit to prevent overcurrent. Ceramic fuses have good high temperature resistance and fast melting characteristics. They can quickly cut off the circuit when an overcurrent occurs, effectively protecting the vehicle battery 30 and the circuit of the connecting device 10 itself, and improving the safety and reliability of the entire system.

[0068] Fuse 6 has a variety of options, not limited to ceramic fuses, but can also be other types, such as glass fuses, vehicle blade fuses, resettable fuses, etc.

[0069] In some embodiments of this application, reference is made to Figures 1-2 , Figure 4 , Figure 6 , Figure 9 As shown, the connecting device 10 also includes a cover plate 7, which is detachably mounted on the second housing 32. A fuse 6 is disposed on the cover plate 7. When the cover plate 7 is removed from the second housing 32, the fuse 6 can be removed together; when the cover plate 7 is mounted on the second housing 32, the fuse 6 can be mounted together. In this way, the force required for disassembly and assembly is applied only to the cover plate 7, and not to the fuse 6, thus reducing the risk of damage to the fuse 6.

[0070] In some embodiments of this application, reference is made to Figures 6-9As shown, the cover plate 7 includes a body portion 71 and a fixing portion 74. The fixing portion 74 is disposed on the body portion 71 and is used to fix the fuse 6. The fixing portion 74 can be a retaining ring with a retaining hole 741 through which the fuse 6 passes. The retaining ring can limit the radial position of the fuse 6. This retaining ring automatically hooks and pulls out the fuse 6 installed on the retaining ring during the opening of the cover plate 7. This design effectively solves the problem that the fuse 6 is difficult to remove manually due to its small size, realizing "open the cover and take out".

[0071] In some embodiments of this application, the diameter of the card hole 741 can be in the range of 3.6 mm to 5 mm.

[0072] In some embodiments of this application, the width of the retaining ring in the first direction can be 2mm to 3mm. This ensures the retaining ring is not too thin and can effectively secure the fuse 6.

[0073] In some embodiments of this application, reference is made to Figure 4 , Figures 6-9 As shown, the cover plate 7 also includes a stop portion 75, a connecting portion 72, and a handle portion 73. The connecting portion 72 connects the handle portion 73 to the body portion 71. The stop portion 75 is connected to the end of the body portion 71 away from the connecting portion 72. The handle portion 73 has a sheet-like structure, and the connecting portion 72 has a bent structure. The second shell portion 32 is provided with a slot 3222 and a limiting surface 3226. The limiting surface 3226 is formed as a concave surface relative to the outer surface of the second shell portion 32. The body portion 71 and the connecting portion 72 are adapted to be engaged in the slot 3222, and the handle portion 73 abuts against the limiting surface 3226. The stop portion 75 abuts against the groove wall of the slot 3222. When the handle portion 73 is lifted relative to the second shell portion 32, the stop portion 75, the body portion 71, and the connecting portion 72 are adapted to disengage from the slot 3222. For example, see reference 7222. Figures 1-2 , Figure 4 As shown, the limiting surface 3226 and the outer surface of the second shell 32 are formed as a stepped surface. The limiting surface 3226 can be parallel to the top (F5 side) outer surface of the second shell 32, and the handle portion 73 faces... Figures 1-2 , Figure 4 When the F5 direction shown is lifted, the stop 75, the body 71 and the connecting part 72 are adapted to disengage from the slot 3222.

[0074] The design of the latch 73 facilitates finger gripping. When the latch 73 is pried upwards, it compresses the connecting part 72, causing it to deform. This reduces and eventually eliminates the locking force between the cover plate 7 and the slot 3222. At this point, pulling the latch 73 allows the stop 75, the main body 71, and the connecting part 72 to be pulled out of the slot 3222, thus completing the disassembly of the cover plate 7. After the locking force disappears, the connecting part 72 returns to its original shape. When the cover plate 7 needs to be installed on the second shell 32, the stop 75 can be inserted into the slot 3222 and pressed against the wall of the slot 3222. Then, the latch 73 is squeezed, causing the connecting part 72 to deform. This causes the main body 71 and the connecting part 72 to be locked into the slot 3222, thus completing the installation of the cover plate 7.

[0075] In some embodiments of this application, reference is made to Figure 8 As shown, the connecting part 72 connects the handle part 73 and the body part 71 in the first direction. The size of the handle part 73 in the first direction is 2mm to 10mm. The handle part 73 also extends along the second direction. The size of the handle part 73 in the second direction is 5mm to 15mm. The thickness of the handle part 73 is 1mm to 3mm. The first direction is perpendicular to the second direction, and both the first direction and the second direction are perpendicular to the thickness direction of the handle part 73.

[0076] Reference Figure 8 As shown, the first direction is F1-F2, and the second direction is F3-F4.

[0077] The size of the handle 73 in the first direction is L1, where 2mm≤L1≤10mm. For example, L1 can be 2mm, 4mm, 6mm, 8mm, 10mm, etc. L1 can also be other values ​​in the range of 2mm to 10mm, which will not be listed here.

[0078] The dimension of the handle 73 in the second direction is L2, where 5mm ≤ L2 ≤ 15mm. For example, L2 can be 5mm, 8mm, 10mm, 13mm, 15mm, etc. L2 can also be other values ​​within the range of 5mm to 15mm, which will not be listed here.

[0079] In some embodiments of this application, reference is made to Figures 8-9As shown, the stop portion 75 may include a first arm 751 and a second arm 752, which are connected together. The first arm 751 forms a stepped structure with the main body portion 71. When the cover plate 7 is fixed in the slot 3222, the first arm 751 abuts against the groove wall of the slot 3222. The second arm 752 may be perpendicular to the first arm 751 or at other angles. The second arm 752 has a stop surface 7521, which is used to stop and limit the fuse 6, so that the relative position of the fuse 6 and the cover plate 7 is accurate.

[0080] In some embodiments of this application, reference is made to Figures 4-5 , Figure 9 As shown, the connecting device 10 also includes a first clamp 81 and a second clamp 82. Both the first clamp 81 and the second clamp 82 are conductors. The first clamp 81 and the second clamp 82 are disposed on the second housing 32 and are spaced apart. The first clamp 81 is adapted to be connected to one end of the fuse 6, and the second clamp 82 is adapted to be connected to the other end of the fuse 6. The fuse 6 is connected to the first connecting pin 1 through the first clamp 81, and the fuse 6 is connected to the first connector 41 through the second clamp 82. The charging circuit is as follows: first connecting pin 1 -> first clamp 81 -> fuse 6 -> second clamp 82 -> first connector 41 -> charging device 20 -> second connector 42 -> second connecting pin 2 -> battery 30. A loop is formed in the charging circuit. When the current in the loop exceeds the rated current threshold of the fuse 6, the fuse 6 melts, thereby cutting off the loop and protecting the downstream OBD interface circuit and related equipment from damage caused by excessive current.

[0081] In some embodiments of this application, the first clamp 81 can be made of copper, brass, aluminum, etc. The first clamp 81 can also be made of other materials with excellent electrical conductivity.

[0082] In some embodiments of this application, the second clamp 82 can be made of copper, brass, aluminum, etc. The second clamp 82 can also be made of other materials with excellent electrical conductivity.

[0083] In some embodiments of this application, reference is made to Figures 1-4 As shown, the second shell portion 32 includes a first portion 321 and a second portion 322, which are connected to each other. The first clamp 81, the second clamp 82 and the second portion 322 are injection molded as a single unit.

[0084] In some embodiments of this application, reference is made to Figures 10-12As shown, the second housing portion 32 is provided with a first insertion hole 3223 and a second insertion hole 3224. The first pin portion 812 of the first clamp 81 is engaged with the first insertion hole 3223 to prevent the first clamp 81 from falling off the second portion 322. The second pin portion 822 of the second clamp 82 is engaged with the second insertion hole 3224 to prevent the second clamp 82 from falling off the second portion 322. Thus, the first clamp 81 and the second clamp 82 are installed on the second portion 322.

[0085] In some embodiments of this application, the first clamp 81 and the second clamp 82 both include a clamp portion and a pin portion. The clamp portion has a receiving space for receiving the fuse 6. The pin portion is connected to the clamp portion. The pin portion of the first clamp 81 is connected to the first connecting pin 1, the pin portion of the second clamp 82 is connected to the first connector 41, and the second connecting pin 2 is connected to the second connector 42.

[0086] Reference Figure 10 As shown, the first clamp 81 includes a first clamp portion 811 and a first pin portion 812. The first clamp portion 811 has a first receiving space 813 for receiving the fuse 6. The first pin portion 812 is connected to the first clamp portion 811 and is connected to the first connecting pin 1. The first pin portion 812 and the first connecting pin 1 can be directly contacted to achieve electrical connection, or they can be indirectly connected through an intermediate conductive member to achieve electrical connection.

[0087] Reference Figure 11 As shown, the second clamp 82 includes a second clamp portion 821 and a second pin portion 822. The second clamp portion 821 has a second receiving space 823 for receiving the fuse 6. The second pin portion 822 is connected to the second clamp portion 821 and is connected to the first connector 41. The second pin portion 822 and the first connector 41 can be directly in contact to achieve electrical connection, or they can be indirectly connected through an intermediate conductive member to achieve electrical connection.

[0088] In some embodiments of this application, the clamping part is an elastic clamping part with a locking slot. The fuse 6 is adapted to enter and exit the receiving space through the locking slot. When the fuse 6 is inserted into the receiving space, the width of the locking slot is smaller than the diameter of the fuse 6. Therefore, the fuse 6 can be clamped by the clamping part, making the electrical connection between the clamping part and the fuse 6 more stable and less prone to disconnection. One end of the locking slot is an open end, which is relatively large to facilitate the initial insertion of the fuse 6. The fuse 6 reaches the locking slot from the open end and then enters the receiving space through the locking slot. The locking slot gradually narrows inward from the open end to form the locking slot, and then widens inward from the locking slot to form the receiving space. The final locking slot size is slightly smaller than the diameter of the fuse 6 to prevent the fuse 6 from coming out. An elastic clamping part refers to a clamping part that can deform under external force and return to its original shape after the external force is removed.

[0089] Reference Figure 10 As shown, the first clamp part 811 has a first slot 814, and the fuse 6 is adapted to enter and exit the first receiving space 813 through the first slot 814.

[0090] Reference Figure 11 As shown, the second clamp part 821 has a second bayonet 824, and the fuse 6 is adapted to enter and exit the second receiving space 823 through the second bayonet 824.

[0091] The installation and locking of fuse 6 can be performed as follows: ① When replacing, the user places the new fuse 6 into the annular retaining ring of the cover plate 7; ② When the cover plate 7 is closed, the downward pressing action of the cover plate 7 will simultaneously press both ends of fuse 6 downward into the first clamping part 811 and the second clamping part 821; ③ Fuse 6 is forcibly pressed into the slightly smaller first clamping slot 814 and the second clamping slot 824. Utilizing the elastic deformation of the first clamping slot 81 and the second clamping slot 82 themselves, the two ends of fuse 6 are firmly fastened and clamped, ensuring good electrical contact and mechanical fixation.

[0092] In some embodiments of this application, the fuse 6 extends along a first direction, the first clamp 81 and the second clamp 82 are spaced apart in the first direction, and the lead portion is a sheet-like structure; the length of the lead portion extending from the clamp portion is 10mm to 30mm; and / or, the width of the lead portion in the second direction is 1.5mm to 25mm; and / or, the thickness of the lead portion is 0.6mm to 1mm; wherein, the first direction is perpendicular to the second direction, and the second direction is perpendicular to the thickness direction of the lead portion.

[0093] Reference Figure 11 As shown, taking the second pin portion 822 as an example, the length of the second pin portion 822 extending from the second clamp portion 821 is L3, and the range of L3 is 10mm to 30mm. For example, L3 can be 10mm, 15mm, 20mm, 25mm, 30mm, etc.

[0094] Reference Figure 11 As shown, the width of the second pin portion 822 in the second direction is L4, and the range of L4 is 1.5mm to 25mm. For example, L4 can be 1.5mm, 5mm, 10mm, 15mm, 20mm, 25mm, etc.

[0095] Reference Figure 11 As shown, the thickness of the second pin portion 822 is L5, and the range of L5 is 0.6mm to 1mm. For example, L5 can be 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, etc.

[0096] L3, L4, and L5 can also be other values ​​within the corresponding range, which will not be listed here.

[0097] The difference between the first pin portion 812 and the second pin portion 822 is that the first pin portion 812 has an "L" shaped structure, so as to change the direction of the first pin portion 812 and make the first pin portion 812 better connected to the first connection pin 1.

[0098] In some embodiments of this application, the first housing portion 31 has a maximum dimension of 40mm to 45mm in a first direction; and / or, the first housing portion 31 has a groove 312, into which at least a portion of the first connecting pin 1 and at least a portion of the second connecting pin 2 extend, and the maximum depth dimension of the groove 312 in a second direction is 10mm to 20mm; and / or, the maximum dimension of the first housing portion 31 in a third direction is 20mm to 25mm; wherein, the third direction is perpendicular to the first direction and the second direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0099] Reference Figure 1 As shown, the maximum dimension of the first shell portion 31 in the first direction is L6, and the range of L6 can be 40mm to 45mm. For example, L6 can be 40mm, 41mm, 42mm, 43mm, 45mm, etc.

[0100] Reference Figure 1 As shown, the maximum depth dimension of the groove 312 in the second direction is L7, and the range of L7 can be 10mm to 20mm. For example, L7 can be 10mm, 12mm, 15mm, 18mm, 20mm, etc.

[0101] Reference Figure 1 As shown, the maximum dimension of the first shell portion 31 in the third direction is L8, and the range of L8 can be 17mm to 25mm. For example, L8 can be 17mm, 20mm, 21mm, 23mm, 24mm, 25mm, etc.

[0102] L6, L7, and L8 can also be other values ​​within the corresponding range, which will not be listed here.

[0103] In some embodiments of this application, the maximum dimension of the second shell portion 32 in the first direction is 40mm to 60mm; and / or, the maximum dimension of the second shell portion 32 in the second direction is 30mm to 50mm; and / or, the maximum dimension of the second shell portion 32 in the third direction is 20mm to 40mm; wherein, the third direction is perpendicular to the first direction and the second direction.

[0104] Reference Figure 1 As shown, the maximum dimension of the second shell portion 32 in the first direction is L9, and the range of L9 can be 40mm to 60mm. For example, L9 can be 40mm, 45mm, 50mm, 55mm, 60mm, etc.

[0105] Reference Figure 1 As shown, the maximum dimension of the second shell portion 32 in the second direction is L10. The range of L10 can be 30mm to 50mm. For example, L10 can be 30mm, 35mm, 40mm, 45mm, 50mm, etc.

[0106] Reference Figure 1 As shown, the maximum dimension of the second shell portion 32 in the third direction is L11. The range of L11 can be 20mm to 40mm. For example, L11 can be 20mm, 25mm, 30mm, 35mm, 40mm, etc.

[0107] L9, L10, and L11 can also be other values ​​within the corresponding range, which will not be listed here.

[0108] In some embodiments of this application, the fuse unit is a circuit board (PCBA).

[0109] A circuit board is integrated on the connector 10. This circuit board has overcharge protection, reverse polarity protection, and short circuit protection. Specifically:

[0110] (1) Overcharge protection: Real-time monitoring of battery 30 voltage. When the voltage reaches the preset safety upper limit threshold, the charging circuit (i.e., charging circuit) is automatically cut off to prevent battery 30 from bulging, electrolyte drying or life shortening due to continuous overcharging.

[0111] In some embodiments of this application, reference is made to Figure 14 As shown, the circuit board is equipped with a control unit, an acquisition unit, and a charging switch. The control unit continuously acquires the voltage information of the battery 30 through the acquisition unit. When the battery 30 is charged to the maximum charging voltage, the charging switch is turned off to achieve overcharge protection.

[0112] The control unit can be an MCU (Microcontroller Unit).

[0113] (2) Short circuit protection: When an accidental short circuit is detected at the output terminal (such as accidental connection of positive and negative poles), the protection circuit will respond instantly (millisecond level) and immediately cut off the output current to prevent the connection device 10 itself, the connection harness or the battery 30 from overheating, catching fire or being damaged due to the large current short circuit at the output terminal.

[0114] In some embodiments of this application, a switching power supply is provided on the circuit board. The switching power supply can be a DC / DC converter, which is a device that converts a DC input voltage into a DC output voltage of another level. Taking a photovoltaic panel as an example of a charging device, due to the characteristics of the photovoltaic panel, when a short circuit occurs, the voltage of the solar panel is pulled down, so that the DC / DC converter cannot reach the start-up voltage and cannot provide power to the MCU. After the MCU is powered off, it cannot provide a drive signal, so the charging switch is turned off, thus achieving short circuit protection.

[0115] (3) Reverse polarity protection: Effectively prevents equipment damage or safety risks caused by operational errors (such as reversing the positive and negative terminals). Regardless of how the input terminals are connected, the protection circuit can ensure that the internal components and battery 30 are protected from reverse current and voltage.

[0116] Taking a photovoltaic panel (also known as a solar panel) as an example, the reverse polarity protection includes photovoltaic end reverse polarity protection: reverse connection protection is achieved by the unidirectional conduction characteristic of the diode in the reverse polarity and backflow protection module.

[0117] Reverse polarity protection also includes reverse polarity protection at the battery terminal: when the battery terminal is reversed, the current through the photovoltaic panel will be pulled up to the short-circuit current of the photovoltaic panel. Due to the characteristics of the photovoltaic panel, the voltage of the photovoltaic panel will be pulled down at this time. The DC / DC cannot reach the start-up voltage and cannot provide power to the MCU. After the MCU is powered off, it cannot provide a drive signal, which causes the charging switch to be turned off, cutting off the circuit to achieve reverse polarity protection.

[0118] By setting up a circuit board, the connection device 10 of this application has the function of automatically cutting off the circuit in case of full charge and abnormal conditions, thus avoiding safety hazards caused by overcharging, short circuit, reverse connection and other problems.

[0119] The integrated protection circuitry on the circuit board is not limited to the three functions mentioned above. For example, overcharge protection can be replaced with constant voltage charging to ensure that the battery is charged at a constant voltage.

[0120] In some embodiments of this application, the connecting device 10 further includes a socket (not shown in the figure), which is disposed at the end of the first connector 41 and the second connector 42 away from the housing 3, and the first connector 41 and the second connector 42 are connected to the charging device 20 through the socket.

[0121] In some embodiments of this application, the socket is an SAE socket, and the charging device 20 is a solar power generation device, such as a solar panel. The SAE socket is compatible with universal solar panel wiring. The SAE socket is an interface standard widely used in the field of solar power generation equipment. Choosing this type of socket allows the connection device 10 of this application to be easily connected to most universal solar power generation devices on the market without the need for additional adapters, thus reducing the user's usage threshold and cost, and enhancing the product's versatility and flexibility.

[0122] In some other embodiments of this application, the socket is a 5521 female connector, and the charging device 20 is an adapter connected to mains power.

[0123] In other embodiments of this application, the charging device 20 may be other devices, and the socket may be adapted to the charging device 20, which will not be listed here.

[0124] In some embodiments of this application, reference is made to Figure 2 As shown, both the first connector 41 and the second connector 42 are connecting wires. The connecting device 10 also includes a wire harness protective sheath 43 and a wire harness clip 5. The wire harness protective sheath 43 is installed on the housing 3 and covers the first connector 41 and the second connector 42. The wire harness protective sheath 43 is secured to the housing 3 by the wire harness clip 5. The wire harness protective sheath 43 is an insulating sleeve that protects the first connector 41 and the second connector 42, keeping them separated to prevent short circuits and to prevent personnel from touching the first connector 41 and the second connector 42 and causing danger. The wire harness clip 5 is fixedly installed on the wire harness protective sheath 43 and can be clipped onto the second housing 32 to prevent damage caused by wire pulling.

[0125] For example, the wire harness protective sheath 43 can be a rubber sheath, a plastic sleeve, etc.

[0126] In some embodiments of this application, reference is made to Figure 2As shown, the first connector 41 is the first connecting wire, and the second connector 42 is the second connecting wire. The first and second connecting wires are wrapped with a wire harness protective sheath 43 to form a single cable 40. The cable 40 is 50cm to 150cm long, facilitating the exit of the connector from under the steering wheel and avoiding space occupation. This 50cm to 150cm length design meets the requirement of exiting the connector from the OBD interface under the steering wheel without causing tangles due to excessive cable length, effectively saving interior space and maintaining a clean interior environment.

[0127] In some embodiments of this application, the wire diameter of cable 40 is 17AWG to 25AWG (American Wire Gauge). AWG is an abbreviation for American Wire Gauge, used to measure the diameter of wires. The larger the AWG number, the finer the wire diameter; the smaller the number, the thicker the wire diameter.

[0128] like Figure 4 As shown, the first portion 321 has a first snap-fit ​​hole 3212, and the second portion 322 has a second snap-fit ​​hole 3225. The first snap-fit ​​hole 3212 and the second snap-fit ​​hole 3225 together form a main snap-fit ​​hole, in which the wire harness clip 5 can be snapped. A sealing structure, such as a sealing gasket, sealing ring, or sealant, can be provided at the connection between the wire harness clip 5 and the main snap-fit ​​hole to prevent water leakage at the connection and ensure good internal sealing of the second housing portion 32.

[0129] In some embodiments of this application, the housing 3 is made of flame-retardant ABS+PC. ABS+PC is an engineering plastic alloy modified by mixing ABS (acrylonitrile-butadiene-styrene copolymer) and PC (polycarbonate) in a certain proportion. This material has excellent flame-retardant properties and meets the UL94 V-0 standard. This means that in a vertical burning test, the material can self-extinguish within 10 seconds without dripping burning particles, greatly reducing the risk of the housing 3 burning due to external fire sources and improving the safety of the connecting device 10 in the complex environment of a vehicle. At the same time, the ABS+PC material also has good mechanical strength, impact resistance, and temperature resistance, which can effectively protect the internal circuit components of the housing 3 from external physical impacts and temperature changes.

[0130] Reference Figure 13 As shown, the connection device 10 of this application connects the charging device 20 to the vehicle battery 30. When using the connection device 10 of this application to transfer electrical energy from the charging device 20 to the battery 30, its working process can be as follows:

[0131] The connection device 10 is inserted into the vehicle's OBD port (with the vehicle turned off). The operation is simple and convenient, requiring no opening of the engine hood. Users simply insert the output port of the connection device 10 into the OBD port below the steering wheel with the vehicle off, greatly simplifying the process and reducing operational difficulty. The charging device 20 connects to the input port of the connection device 10 via a socket. The connection method is simple and intuitive, allowing users to easily connect the charging device 20 to the connection device 10 without requiring specialized knowledge or skills.

[0132] The application scenarios of the connection device 10 in this application include:

[0133] (1) Long-term parked vehicles: For vehicles that need to be unused for several weeks or months (such as private cars during business trips or vacations, seasonal vehicles, etc.), the connection device 10 of this application can connect to an external charging device 20 to replenish the battery 30, prevent the battery 30 from running out of power, ensure that the vehicle can start normally when needed, and extend the service life of the battery 30.

[0134] (2) Parking vehicles in garages: Even if the vehicle is parked in a garage or other environment with relatively poor lighting conditions, if a suitable charging device 20 (such as a solar panel, which can be placed at the garage window to receive diffused light) is provided, it can still provide a certain amount of power to the battery 30 and play a role in maintaining the battery 30.

[0135] (3) Emergency backup vehicles: Some units or individuals own emergency backup vehicles, which are used infrequently and are prone to battery depletion due to long-term parking. The connection device 10 of this application can effectively solve this problem and ensure that the emergency vehicle can be started at any time when needed.

[0136] The connection device 10 of this application overcomes the defects in related technologies through an innovative OBD interface connection method. It has many advantages such as convenient operation, continuous effectiveness, high safety, aesthetics and convenience, and strong versatility. It can effectively solve the problem of battery 30 being depleted due to long-term parking of the vehicle and extend the service life of battery 30.

[0137] The connecting device 10 of this application also has the following features:

[0138] (1) Ease of operation

[0139] Compared to external charging devices that directly connect to the positive and negative terminals of the battery using clamps, the connection device 10 of this application does not require opening the engine hood. Connection is completed simply by inserting the output interface into the vehicle's OBD interface. The operation is simple and can be easily performed even by non-professionals. Furthermore, during temporary vehicle relocation or inspection, there is no need for repeated disassembly and reconnection, significantly saving operation time and effort and improving user convenience.

[0140] (2) Continuous and effective work

[0141] By utilizing the constant power pin of the OBD interface, the problem of automatic power cut-off of the cigarette lighter interface after the vehicle is turned off and locked is solved, ensuring that the connection device 10 can continuously replenish the battery 30 while the vehicle is parked, thus ensuring the effectiveness of the solution and preventing the battery 30 from running out of power due to prolonged parking.

[0142] (3) High security

[0143] The charging circuit design incorporates a series fuse unit (such as a ceramic fuse) to effectively prevent overcurrent and protect the circuit safety.

[0144] The casing 3 is made of flame-retardant material, which reduces the risk of fire.

[0145] The elimination of exposed battery terminals reduces the risk of short circuits, poor contact causing sparks, and improves safety during operation and use.

[0146] (4) Aesthetics and convenience

[0147] The housing 3 is compact in size and will not take up too much space after installation. The cables 40 are also neatly managed and will not affect the aesthetics of the vehicle interior. Furthermore, there is no need to keep the engine hood partially closed, preventing rainwater and dust from entering and avoiding damage to the cables, thus ensuring the normal operation of the vehicle and the lifespan of the equipment.

[0148] (5) High versatility

[0149] When the input interface uses an SAE socket, it is compatible with universal solar panel wiring, allowing users to easily use it with most solar panels on the market, improving the product's versatility and flexibility, and reducing user operating costs.

[0150] In specific embodiments, the charging device 20 may be a solar panel, an external battery, an adapter connected to mains power, or other devices, which will not be listed here.

[0151] In the description of this application, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0152] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0153] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0154] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A connecting device (10), characterized in that, include: Shell (3); A first connection pin (1) and a second connection pin (2) are both mounted on the housing (3). The first connection pin (1) and the second connection pin (2) are both adapted to connect to the vehicle's OBD interface. The first connection pin (1) and the second connection pin (2) are also adapted to connect to a charging device (20) to transfer the electrical energy of the charging device (20) to the vehicle's battery (30).

2. The connecting device (10) according to claim 1, characterized in that, The connection device (10) further includes a first connector (41) and a second connector (42), wherein the first connection pin (1) is connected to the first connector (41) and the second connection pin (2) is connected to the second connector (42), and the first connection pin (1) and the second connection pin (2) are adapted to connect to the charging device (20) through the first connector (41) and the second connector (42).

3. The connecting device (10) according to claim 2, characterized in that, The connecting device (10) connects the charging device (20) and the battery (30) to form a charging circuit. The connecting device (10) also includes a fuse unit connected between the first connecting pin (1) and the first connector (41) and / or between the second connecting pin (2) and the second connector (42). When the current flowing through the fuse unit reaches the rated current threshold, the fuse unit disconnects the charging circuit.

4. The connecting device (10) according to claim 3, characterized in that, The housing (3) includes: The first housing (31) is provided with the first connecting pin (1) and the second connecting pin (2) mounted on the first housing (31); The second housing (32) is connected to the first housing (31), and the safety unit is disposed inside the second housing (32).

5. The connecting device (10) according to claim 4, characterized in that, The first connection pin (1), the second connection pin (2), and the first shell (31) are injection molded as a single unit.

6. The connecting device (10) according to claim 4, characterized in that, The second shell portion (32) includes multiple segments that are fastened together, and the first shell portion (31) has a first mounting groove (311) in which the multiple segments are fitted.

7. The connecting device (10) according to claim 4, characterized in that, The fuse unit is a fuse (6), which melts when the current flowing through the fuse (6) reaches the rated current threshold of the fuse (6); or, the fuse unit is a circuit board.

8. The connecting device (10) according to claim 7, characterized in that, The connecting device (10) further includes a cover plate (7), which is detachably installed on the second housing (32), and the safety unit is a fuse (6), which is disposed on the cover plate (7).

9. The connecting device (10) according to any one of claims 7-8, characterized in that, The safety unit is a fuse (6), and the connecting device (10) further includes a first clamp (81) and a second clamp (82). The first clamp (81) and the second clamp (82) are both conductors. The first clamp (81) and the second clamp (82) are disposed on the second housing (32). The first clamp (81) and the second clamp (82) are spaced apart. The first clamp (81) is adapted to be connected to one end of the fuse (6), and the second clamp (82) is adapted to be connected to the other end of the fuse (6). The fuse (6) is connected to the first connecting pin (1) through the first clamp (81), and the fuse (6) is connected to the first connector (41) through the second clamp (82).

10. The connecting device (10) according to claim 9, characterized in that, The second shell portion (32) includes a first portion (321) and a second portion (322), the first portion (321) and the second portion (322) are connected, and the first clamp (81), the second clamp (82) and the second portion (322) are injection molded as a single structure.

11. The connecting device (10) according to claim 9, characterized in that, Both the first clamp (81) and the second clamp (82) include a clamp portion and a pin portion. The clamp portion has a receiving space for accommodating the fuse (6). The pin portion is connected to the clamp portion. The pin portion of the first clamp (81) is connected to the first connecting pin (1). The pin portion of the second clamp (82) is connected to the first connector (41). The second connecting pin (2) is connected to the second connector (42).

12. The connecting device (10) according to claim 11, characterized in that, The clamp part is an elastic clamp part, the clamp part has a slot, the fuse (6) is adapted to enter and exit the receiving space through the slot, and when the fuse (6) is inserted into the receiving space, the width of the slot is smaller than the diameter of the fuse (6).

13. The connecting device (10) according to claim 4, characterized in that, The first housing portion (31) has a maximum dimension of 40 mm to 45 mm in a first direction; and / or, the first housing portion (31) has a groove (312) into which at least a portion of the first connecting pin (1) and at least a portion of the second connecting pin (2) extend, and the groove (312) has a maximum depth dimension of 10 mm to 20 mm in a second direction; and / or, the first housing portion (31) has a maximum dimension of 17 mm to 25 mm in a third direction. Wherein, the first direction, the second direction, and the third direction are perpendicular to each other.

14. The connecting device (10) according to claim 2, characterized in that, The connecting device (10) further includes a socket, which is located at the end of the first connector (41) and the second connector (42) away from the housing (3), and the first connector (41) and the second connector (42) are connected to the charging device (20) through the socket.

15. The connecting device (10) according to claim 2, characterized in that, The first connector (41) and the second connector (42) are both connecting wires. The connecting device (10) also includes a wire harness protective sheath (43) and a wire harness buckle (5). The wire harness protective sheath (43) is installed on the housing (3). The wire harness protective sheath (43) covers the first connector (41) and the second connector (42). The wire harness protective sheath (43) is fastened to the housing (3) by the wire harness buckle (5).

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