High-voltage plug connector, battery pack and electric equipment

Abstract

The utility model relates to a high-voltage plug connector, a battery pack and electric equipment, the high-voltage plug connector is used for the battery pack, the high-voltage plug connector comprises a shell, a relay, a fuse and a terminal assembly are arranged in the shell, the first conductive end of the fuse is electrically connected with the relay, the second conductive end of the fuse is electrically connected with the terminal assembly, and the first conductive end of the fuse is electrically connected with the terminal assembly. And the output end of the terminal assembly extends to the outside of the shell. Therefore, the relay, the fuse and the terminal assembly are integrally arranged in the shell, the first conductive end of the fuse is electrically connected with the relay, and the second conductive end of the fuse is electrically connected with the terminal assembly, so that the integration level of the high-voltage plug connector can be improved, and the number of wire harnesses among the relay, the fuse and the terminal assembly is reduced; the risk of circuit electric connection failure caused by too many wire harnesses is reduced, and the reliability of the high-voltage plug connector is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of lithium batteries, and in particular, to a high-voltage connector, a battery pack, and an electrical device. Background Art

[0002] In the related art, the heating circuit of a new energy vehicle includes a high-voltage connector, a heating relay, and a heating fuse. Among them, the high-voltage connector, the heating relay, and the heating fuse (fuse) are designed in a split manner. The high-voltage connector is arranged outside the battery pack, and the heating relay and the heating fuse are arranged inside the battery pack. The above split design requires multiple wire harnesses to electrically connect the high-voltage connector, the heating relay, and the heating fuse, resulting in low integration among electrical components, increasing the risk of failure during the circuit connection process, and reducing the electrical connection reliability between the high-voltage connector, the heating relay, and the heating fuse. Summary of the Utility Model

[0003] The purpose of the present disclosure is to provide a high-voltage connector, a battery pack, and an electrical device. The high-voltage connector is simple to assemble, has a high degree of integration, and reduces the risk of failure during the circuit connection process, so as to at least partially solve the above technical problems.

[0004] To achieve the above purpose, the first aspect of the present disclosure provides a high-voltage connector for a battery pack, including: a housing, in which a relay, a fuse, and a terminal assembly are provided. The first conductive end of the fuse is electrically connected to the relay. The terminal assembly includes a positive output terminal and a negative output terminal extending outside the housing, and the positive output terminal is electrically connected to the second conductive end of the fuse.

[0005] Optionally, the housing includes a base and an outer cover detachably connected to the base. The relay and the terminal assembly are spaced apart on the base. The outer cover includes a receiving cavity for receiving the relay and the terminal assembly and an avoidance hole for avoiding the output ends of the terminal assembly.

[0006] Optionally, the relay is detachably connected to the base.

[0007] Optionally, a clamping assembly is provided on the base, and the clamping assembly is detachably connected to the relay.

[0008] Optionally, the clamping assembly includes two oppositely arranged jaws, and the relay is clamped between the two jaws.

[0009] Optionally, a clamping portion is provided on the base, and a mating portion cooperating with the clamping portion is provided on the outer cover. The base and the outer cover are detachably connected through the clamping portion and the mating portion.

[0010] Optionally, one of the snap - connection part and the mating part includes a snap - connection groove, and the other includes a snap - connection protrusion.

[0011] Optionally, the terminal assembly includes a positive output terminal, a negative output terminal, and a positive input terminal. The relay includes a first electrical connection end and a second electrical connection end. The positive output terminal is electrically connected to the second conductive end of the fuse. The negative output terminal is used to be electrically connected to the negative electrode of the battery. The first electrical connection end of the relay is electrically connected to the first conductive end of the fuse. The second electrical connection end of the relay is electrically connected to the positive input terminal. The positive input terminal is used to be electrically connected to the positive electrode of the battery.

[0012] Optionally, the terminal assembly further includes a mounting seat. A slot penetrating through the base is provided in the mounting seat. The positive output terminal, the negative output terminal, and the positive input terminal are integrally injection - molded in the slot.

[0013] Optionally, the high - voltage connector further includes two conductive connection plates. The two conductive connection plates are respectively arranged at the first conductive end and the second conductive end of the fuse, so that the first electrical connection end of the relay is electrically connected to the first conductive end of the fuse through the conductive connection plate, and the second conductive end of the fuse is electrically connected to the positive output terminal through the conductive connection plate.

[0014] Optionally, the high - voltage connector further includes a fastener. The conductive connection plate is provided with a first connection hole. The positive output terminal and the first electrical connection end of the relay are respectively provided with second connection holes configured with the fastener. The fastener passes through the first connection hole and the second connection hole to fixedly connect the two conductive connection plates to the positive output terminal and the first electrical connection end of the relay respectively.

[0015] A second aspect of the present disclosure discloses a battery pack, including the above - mentioned high - voltage connector. The high - voltage connector is arranged on the outer side wall of the battery pack.

[0016] A third aspect of the present disclosure discloses an electrical device, including the above - mentioned battery pack.

[0017] Through the above - mentioned technical solution, by integrally arranging the relay, the fuse, and the terminal assembly in the housing, and electrically connecting the first conductive end of the fuse to the relay and the second conductive end of the fuse to the terminal assembly, the integration degree of the high - voltage connector can be improved, the number of wire harnesses between the relay, the fuse, and the terminal assembly can be reduced, the risk of circuit electrical connection failure caused by excessive wire harnesses can be reduced, and the reliability of the high - voltage connector can be improved.

[0018] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation part. Brief Description of the Drawings

[0019] The drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0020] Figure 1 is an exploded view of the high-voltage connector provided in the exemplary embodiment of the present disclosure;

[0021] Figure 2 is a front view of the high-voltage connector provided in the exemplary embodiment of the present disclosure;

[0022] Figure 3 is an assembly view of the relay, terminal assembly and fuse provided in the exemplary embodiment of the present disclosure;

[0023] Figure 4 is a schematic diagram of the principle of the high-voltage connector provided in the exemplary embodiment of the present disclosure.

[0024] Description of Reference Numerals

[0025] 1 - housing; 11 - base; 111 - clamping portion; 12 - outer cover; 121 - avoidance hole; 122 - mating portion; 2 - relay; 21 - first electrical connection end; 22 - second electrical connection end; 3 - fuse; 31 - first conductive end; 32 - second conductive end; 4 - terminal assembly; 41 - positive output terminal; 42 - negative output terminal; 43 - positive input terminal; 44 - mounting seat; 45 - slot; 5 - clamping assembly; 51 - clamping jaw; 6 - conductive connection plate; 61 - first connection hole. Detailed Description of the Embodiments

[0026] The following provides a detailed description of the specific embodiments of the present disclosure with reference to the drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.

[0027] In the present disclosure, unless otherwise stated, the orientation terms such as "inside, outside" refer to the outline of the components themselves. In addition, it should be noted that the terms such as "first, second" are used to distinguish one element from another, and do not have sequentiality and importance. Additionally, in the description with reference to the drawings, the same reference numerals in different drawings represent the same elements.

[0028] In the related art, the battery pack serves as the heart and power source of new energy vehicles. The driving range, reliability, and cost of the product have become constraints on the development of new energy. As an important component of the battery pack, the BDU (Battery Disconnect Unit) is responsible for important tasks such as total voltage acquisition, current acquisition, insulation inspection, power transmission and control, information interaction, and function diagnosis. The importance of the reliability of the BDU is self-evident. Among them, the heating circuit is an essential link for the high-voltage and efficient operation of new energy vehicles. The heating process adjusts the power of the PTC water heater to control the inlet temperature of the cooling temperature control system, thereby controlling the charging efficiency and battery activity of the battery in a low-temperature environment. The heating circuit includes a high-voltage plug-in connector outside the package body and a heating relay and a heating fuse inside the package body. In the related art, the above-mentioned split design requires multiple wire harnesses to electrically connect the high-voltage plug-in connector, the heating relay, and the heating fuse, resulting in a low integration degree between electrical components and increasing the risk of failure during the circuit connection process, leading to low electrical connection reliability between the high-voltage plug-in connector, the heating relay, and the heating fuse.

[0029] To solve the above technical problems, as Figures 1 - 4 shown, a first aspect of the present disclosure discloses a high-voltage plug-in connector for a battery, including: a housing 1, in which a relay 2, a fuse 3, and a terminal assembly 4 are provided. A first conductive end 31 of the fuse 3 is electrically connected to the relay 2. The terminal assembly 4 includes a positive output terminal 41 and a negative output terminal 42 extending outside the housing 1. The positive output terminal 41 is electrically connected to a second conductive end 32 of the fuse 3.

[0030] Through the above technical solution, by integrally arranging the relay 2, the fuse 3, and the terminal assembly 4 in the housing 1, and electrically connecting the first conductive end 31 of the fuse 3 to the relay 2 and the second conductive end 32 of the fuse 3 to the positive output terminal 41, the integration degree of the high-voltage plug-in connector can be improved, the number of wire harnesses between the relay 2, the fuse 3, and the terminal assembly 4 can be reduced, the risk of circuit electrical connection failure caused by excessive wire harnesses can be reduced, and the reliability of the high-voltage plug-in connector can be improved.

[0031] In some implementable ways, for the convenience of repairing and replacing the relay 2 and the fuse 3, the housing 1 includes a base 11 and an outer cover 12 detachably connected to the base 11. Among them, both the base 11 and the outer cover 12 are insulators. For example, they can be made of resin materials. The relay 2 and the fuse 3 are both conventional electronic components and can be obtained through outsourcing. The relay 2 and the terminal assembly 4 are arranged at intervals on the base 11. The outer cover 12 includes a receiving cavity for receiving the relay 2 and the terminal assembly 4 and an avoidance hole 121 for avoiding the output end of the terminal assembly 4. Thus, when the relay 2 and / or the fuse 3 fails and needs to be replaced, the outer cover 12 can be disassembled to disassemble and replace the relay 2 and / or the fuse 3 located on the base 11. Of course, through the setting of the avoidance hole 121, the terminal assembly 4 can be exposed, which is convenient for an external electrical plug to be electrically connected to the terminal assembly 4. By arranging the relay 2 and the terminal assembly 4 at intervals, the relay 2 and the terminal assembly 4 can be prevented from interfering with each other.

[0032] In order to facilitate the disassembly of the outer cover 12 and the base 11, in some implementable ways, the base 11 is provided with a clamping portion 111, and the outer cover 12 is provided with a cooperating portion 122 that cooperates with the clamping portion 111. The base 11 and the outer cover 12 are detachably connected through the clamping portion 111 and the cooperating portion 122. Specifically, one of the clamping portion 111 and the cooperating portion 122 includes a clamping groove, and the other includes a clamping protrusion. For example, the clamping portion 111 can be a clamping groove, and the cooperating portion 122 can be a clamping protrusion. The clamping protrusion has elasticity. When the outer cover 12 is fixed to the base 11, the clamping protrusion on the outer cover 12 can be pressed into the clamping groove of the base 11. When the outer cover 12 needs to be separated from the base 11, only the outer cover 12 needs to be pulled in a direction away from the base 11. Of course, it can be understood that the above clamping protrusion has elasticity, and it is schematic when the outer cover 12 and the base 11 are fixedly connected by being pressed into the clamping groove of the base 11. In other embodiments, the clamping protrusion can also be provided with a mounting hole, and the clamping groove is provided with a threaded hole, and the outer cover 12 and the base 11 are detachably connected through a fastener.

[0033] In addition, to facilitate the disassembly and assembly of the relay 2, in some feasible embodiments, the relay 2 is detachably connected to the base 11. For example, a clamping assembly 5 is provided on the base 11, and the clamping assembly 5 is detachably connected to the relay 2. Specifically, the clamping assembly 5 includes two relatively arranged jaws 51, and the relay 2 is clamped between the two jaws 51. Among them, the jaws 51 can be elastic plastic parts. The bottom end of the jaw 51 is fixedly arranged on the base 11, and a clamping claw is provided at the top end. When installing the relay 2, the jaws 51 can be pulled outwards to facilitate placing the relay 2 between the two jaws 51. After the relay 2 is placed in the preset position, the jaws 51 are released so that the clamping claws of the jaws 51 clamp the upper part of the relay 2, and the relay 2 is clamped and fixed on the base 11. It can be understood that the structure of the clamping assembly 5 including two jaws 51 is suitable. In other embodiments, the clamping assembly 5 can also be other structures. For example, the clamping assembly 5 can include a U-shaped clamping member, and a clamping hole is provided on the base 11. The U-shaped clamping member can bypass the relay 2 so that both ends of the clamping member are inserted into the clamping hole to fix the relay 2 on the base 11.

[0034] In some feasible embodiments, the terminal assembly 4 further includes a positive input terminal 43. The relay 2 includes a first electrical connection end 21 and a second electrical connection end 22. The positive output terminal 41 is electrically connected to the second conductive end 32 of the fuse 3, the negative output terminal 42 is electrically connected to the negative electrode of the battery pack, the first electrical connection end 21 of the relay 2 is electrically connected to the first conductive end 31 of the fuse 3, and the second electrical connection end 22 of the relay 2 is electrically connected to the positive input terminal 43. The positive input terminal 43 is used to be electrically connected to the positive electrode of the battery pack. Thus, when both ends of an external electrical component are conducted with the positive output terminal 41 and the negative output terminal 42 of the terminal, the high-voltage electricity of the battery pack can output power to the external electrical component, so that the electrical component can be powered on and work. Of course, by arranging the relay 2 and the fuse 3 on the loop where the positive input terminal 43 is connected to the positive electrode of the battery pack, the conduction of this positive connection loop can be realized through the relay 2. At the same time, when overload occurs, the fuse 3 fuses to protect the circuit.

[0035] In addition, the terminal assembly 4 further includes a mounting base 44. A slot 45 penetrating through the base 11 is provided in the mounting base 44. The mounting base 44 cooperates with the avoidance hole 121 so as to expose the positive output terminal 41 and the negative output terminal 42. The positive output terminal 41, the negative output terminal 42 and the positive input terminal 43 are integrally injection-molded in the slot 45. In this way, the positive output terminal 41, the negative output terminal 42 and the positive input terminal 43 can be fixed in the slot 45, so as to facilitate the electrical connection between one end of the positive input terminal 43 and the negative output terminal 42 facing the battery pack and the positive and negative electrodes in the battery pack, and to facilitate the electrical connection between one end of the positive output terminal 41 and the negative output terminal 42 facing away from the base 11 and an external electrical component, thereby enabling the battery pack to supply electrical energy to the electrical component.

[0036] In order to facilitate the conduction between the relay 2 and the fuse 3 and between the fuse 3 and the positive output terminal 41, in some implementable ways, the high-voltage plug connector further includes two conductive connection plates 6. The conductive connection plates 6 can be copper bars, aluminum bars or other conductive metal plates. In this embodiment, preferably a copper bar, the two conductive connection plates 6 are respectively welded to the first conductive end 31 and the second conductive end 32 of the fuse 3, so that the first electrical connection end 21 of the relay 2 is electrically connected to the first conductive end 31 of the fuse 3 through the conductive connection plate 6, and the second conductive end 32 of the fuse 3 is electrically connected to the positive output terminal 41 through the conductive connection plate 6.

[0037] In addition, the high-voltage plug connector further includes a fastener. The fastener can be a screw. The conductive connection plate 6 is provided with a first connection hole 61. The positive output terminal 41 and the first electrical connection end of the relay 2 are respectively provided with second connection holes configured with the fastener. The first connection hole 61 and the second connection hole are both threaded holes. The fastener passes through the first connection hole 61 and the second connection hole to fixedly connect the two conductive connection plates 6 to the positive output terminal 41 and the first electrical connection end of the relay 2 respectively. Thus, through the cooperation of the fastener and the first connection hole 61 and the second connection hole, the first electrical connection end 21 of the relay 2 can be stably electrically connected to the first conductive end 31 of the fuse 3, and the second conductive end 32 of the fuse 3 can be stably electrically connected to the positive output terminal 41.

[0038] It should be noted that, as Figure 4 shown, the working principle of the high-voltage plug connector mentioned in this embodiment is that Figure 4The high-voltage positive and high-voltage negative mentioned correspond to the positive and negative electrodes of the vehicle's battery pack respectively. A fuse 3 and a relay 2 are provided on the high-voltage positive circuit and output through the positive output terminal 41 in the terminal assembly 4. Among them, the positions of the fuse 3 and the relay 2 can be interchanged. The high-voltage negative circuit outputs through the negative output terminal 42. The low-voltage power supply of the relay 2 is used to supply power to the actuator part of the relay 2. When the actuator part receives a signal, it controls the on / off of the relay 2. The function of the fuse 3 is to fuse and protect the circuit when the high-voltage positive circuit is overloaded.

[0039] In the second aspect of the present disclosure, a battery pack is disclosed, including the above-mentioned high-voltage connector, and the high-voltage connector is arranged on the outer side wall of the battery pack. Thus, by arranging the above-mentioned wire harness connector on the outer side wall of the battery pack, it replaces the relay 2 and the fuse 3 inside the battery pack body in the related art. By arranging the high-voltage connector on the outer side wall of the battery pack, once a component fails, there is no need to disassemble the package to damage the seal for repair. Just open the outer cover 12 to replace the relay 2 and the fuse 3. In addition, this battery pack has all the beneficial effects of the above-mentioned high-voltage connector, which will not be elaborated herein again.

[0040] In the third aspect of the present disclosure, an electrical equipment is disclosed, including the above-mentioned battery pack. This electrical equipment has all the beneficial effects of the above-mentioned battery pack, which will not be elaborated herein again.

[0041] Among them, it should be noted that the above-mentioned electrical equipment can be a vehicle, and the vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. Of course, in some other embodiments, the above-mentioned electrical equipment can also be a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy and an electric tool, etc. The spacecraft can include an airplane, a rocket, a space shuttle and a spaceship, etc.; the electric toy can include a fixed or mobile electric toy, for example, a game console, an electric vehicle toy, an electric ship toy and an electric airplane toy, etc.; the electric tool can include a metal cutting electric tool, a grinding electric tool, an assembly electric tool and a railway electric tool, for example, an electric drill, an electric grinding wheel, an electric wrench, an electric screwdriver, a hammer drill, an impact electric drill, a concrete vibrator and a planer, etc. The present disclosure is not limited thereto.

[0042] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0043] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any appropriate manner without contradiction. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination manners.

[0044] Furthermore, any combinations can be made among the various different embodiments of the present disclosure, as long as they do not violate the idea of the present disclosure, and they should also be regarded as the content disclosed by the present disclosure.

Claims

1. A high voltage connector for a battery pack, characterized in that: include: A housing is provided with a relay, a fuse and a terminal assembly, wherein a first conductive end of the fuse is electrically connected to the relay, the terminal assembly comprises a positive output terminal and a negative output terminal extending to the outside of the housing, and the positive output terminal is electrically connected to the second conductive end of the fuse.

2. The high voltage connector according to claim 1, characterized in that: The shell includes a base and an outer cover detachably connected to the base, the relay and the terminal assembly are arranged at intervals on the base, and the outer cover includes an accommodating cavity for accommodating the relay and the terminal assembly and an avoidance hole for avoiding the output end of the terminal assembly.

3. The high voltage connector according to claim 2, characterized in that: The relay is detachably connected to the base.

4. The high voltage connector according to claim 3, characterized in that: The base is provided with a clamping assembly, and the clamping assembly is detachably connected to the relay.

5. The high voltage connector according to claim 4, characterized in that: The clamping assembly comprises two clamping jaws arranged opposite to each other, and the relay is clamped between the two clamping jaws.

6. The high voltage connector according to claim 2, characterized in that: The base is provided with a clamping portion, and the outer cover is provided with a matching portion that matches the clamping portion. The base and the outer cover are detachably connected via the clamping portion and the matching portion.

7. The high voltage connector according to claim 6, characterized in that: One of the clamping portion and the matching portion includes a clamping groove, and the other includes a clamping protrusion.

8. The high voltage connector according to claim 2, characterized in that: The terminal assembly also includes a positive input terminal, the relay includes a first electrical connection end and a second electrical connection end, the positive output terminal is electrically connected to the second conductive end of the fuse, the negative output terminal is used to electrically connect to the negative pole of the battery pack, the first electrical connection end of the relay is electrically connected to the first conductive end of the fuse, the second electrical connection end of the relay is electrically connected to the positive input terminal, and the positive input terminal is used to electrically connect to the positive pole of the battery pack.

9. The high voltage connector according to claim 8, characterized in that: The terminal assembly also includes a mounting seat, in which a slot penetrating the base is provided, and the positive output terminal, the negative output terminal and the positive input terminal are integrally injection-molded and arranged in the slot.

10. The high voltage connector according to claim 8, characterized in that: The high-voltage connector also includes two conductive connecting plates, which are respectively arranged at the first conductive end and the second conductive end of the fuse, so that the first electrical connection end of the relay is electrically connected to the first conductive end of the fuse through the conductive connecting plates, and the second conductive end of the fuse is electrically connected to the positive output terminal through the conductive connecting plates.

11. The high voltage connector according to claim 10, characterized in that: The high-voltage connector also includes a fastener, the conductive connecting plate is provided with a first connecting hole, the positive output terminal and the first electrical connection end of the relay are respectively provided with second connecting holes configured with the fastener, and the fastener passes through the first connecting hole and the second connecting hole to fix the two conductive connecting plates to the positive output terminal and the first electrical connection end of the relay respectively.

12. A battery pack, characterized in that: It comprises the high-voltage connector as described in any one of claims 1 to 11, wherein the high-voltage connector is arranged on the outer side wall of the battery pack.

13. An electrical equipment, characterized in that: A battery pack comprising the battery pack of claim 12.

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