High-voltage power distribution device and vehicle

Abstract

The utility model discloses a high-voltage power distribution device and a vehicle, and belongs to the field of vehicle power distribution. The device comprises a direct-current charging base, a power battery module, a four-in-one high-voltage power distribution module, a load system, an engine, a range-extending generator and a range-extending generator controller, and the power battery module is connected with the direct-current charging base, the four-in-one high-voltage power distribution module and the range-extending generator controller; the four-in-one high-voltage power distribution module is respectively connected with the load system and the extended range generator controller; the extended range generator controller is connected with the extended range generator; and the range extending generator is connected with the engine. The power supply device can safely and effectively supply power to various electric devices, meets the requirements of users for various electric devices, supports charging modes of various power batteries at the same time, ensures sufficient electric quantity of the power batteries, and is simple and reliable in structure and convenient to operate and control.

Description

Technical Field

[0001] The utility model belongs to the field of vehicle power distribution. Specifically, the utility model relates to a high-voltage power distribution device and a vehicle. Background Art

[0002] With the gradual improvement of the domestic new energy vehicle industry and the increasing oil price, major vehicle manufacturers are constantly delving into user needs and finding that customers have an increasing demand for electrical equipment. How to meet the customers' demand for electrical equipment to the greatest extent is an urgent problem to be solved currently.

[0003] The prior art (CN118367454A) provides a high-voltage power distribution box, a control method and a vehicle. The high-voltage power distribution box includes: a power distribution box body, and a charging relay is arranged on the power distribution box body; an intelligent control module, the intelligent control module is installed in the power distribution box body, the intelligent control module is provided with an MCU processing module, a voltage sampling module, a CAN communication module and a relay control module, the voltage sampling module is electrically connected to the contact of the charging relay, the MCU processing module is respectively electrically connected to the voltage sampling module, the CAN communication module and the relay control module, the MCU processing module judges the voltage signal transmitted by the received voltage sampling module and outputs a first judgment result, and the MCU processing module controls the charging relay to close and open based on the first judgment result. The above high-voltage power distribution box can avoid damage to the power distribution box or even the whole vehicle caused by the aging of the contacts of the charging relay during the charging process, and improve the safety of the power distribution box and the whole vehicle.

[0004] The high-voltage power distribution box in the above prior art only ensures the electrical safety of the vehicle and the power distribution of conventional electrical equipment on the vehicle, and cannot meet the increasing power consumption and charging needs of users when the vehicle is powered. Summary of the Utility Model

[0005] The utility model aims to overcome the deficiencies of the prior art, and provides a high-voltage power distribution device and a vehicle to achieve the following purposes: safely and effectively supply power to a variety of electrical equipment to meet the needs of users for a variety of electrical equipment, while supporting a variety of charging methods for power batteries to ensure sufficient power of the power batteries, with a simple and reliable structure and convenient operation.

[0006] To achieve the above purposes, the technical solution adopted by the utility model is: a high-voltage power distribution device, the device includes a DC charging socket, a power battery module, a four-in-one high-voltage power distribution module, a load system, an engine, an extended-range generator, and an extended-range generator controller. Among them, the power battery module is respectively connected to the DC charging socket, the four-in-one high-voltage power distribution module, and the extended-range generator controller; the four-in-one high-voltage power distribution module is respectively connected to the load system and the extended-range generator controller; the extended-range generator controller is connected to the extended-range generator; the extended-range generator is connected to the engine.

[0007] Preferably, the power battery module includes a power battery, a current sensor, a fuse device, a fast charging relay, a pre-charging relay, a pre-charge resistor, a main positive circuit relay, and a main negative circuit relay. Among them, the positive electrode of the power battery is successively connected in series with the current sensor and the fuse device, and then a first terminal and a second terminal are led out. The first terminal is connected to the positive electrode of the DC charging socket through the fast charging relay, and the second terminal is connected in series with the main positive circuit relay and then a third terminal is led out as the positive electrode of the power battery module; the whole of the pre-charging relay and the pre-charge resistor connected in series is connected in parallel at both ends of the main positive circuit relay; the negative electrode of the power battery is connected to the main negative circuit relay and a fourth terminal and a fifth terminal are led out. The fourth terminal is connected to the negative electrode of the DC charging socket, and the fifth terminal is used as the negative electrode of the power battery module; the positive / negative electrodes of the power battery module are connected to the four-in-one high-voltage power distribution module and the range extender generator controller.

[0008] Preferably, the four-in-one high-voltage power distribution module includes an MCU, a PDU, an OBC, and a DC / DC converter. The MCU, PDU, OBC, and DC / DC are respectively connected to the power battery module; the MCU, PDU, OBC, and DC / DC are respectively connected to the range extender generator controller; the MCU, PDU, OBC, and DC / DC are respectively connected to the load system.

[0009] Preferably, the load system includes a drive motor, an AC slow charging socket, a storage battery, a PTC, an air-conditioning compressor, and a chiller. Among them, the drive motor is connected to the MCU, the AC slow charging socket is connected to the OBC, the storage battery is connected to the DC / DC converter, and the PTC, the air-conditioning compressor, and the chiller are respectively connected to the PDU.

[0010] Preferably, a fuse device is respectively arranged between the OBC and the power battery module or the range extender generator controller; a fuse device is respectively arranged between the DC / DC converter and the power battery module or the range extender generator controller; a fuse device is arranged between the PDU and the load system.

[0011] Preferably, a fuse device and a relay are successively connected in series between the PDU and the PTC.

[0012] Preferably, the range extender generator controller is respectively connected to the power battery module and the four-in-one high-voltage power distribution module through fuse devices.

[0013] Preferably, the fuse device is a fuse.

[0014] The present application also provides a vehicle, which includes the above-mentioned high-voltage power distribution device.

[0015] The technical effects of the present utility model are as follows: (1) The present utility model supports a variety of electrical equipment, which not only meets the power consumption requirements of common electrical equipment on the vehicle end, such as drive motors, etc., but also effectively meets the growing demand for electrical equipment of users, such as the use of 220V household appliances. (2) The present utility model provides a variety of charging methods, including fast charging and slow charging, thereby ensuring sufficient battery power to reduce the user's charging anxiety. At the same time, it can implement roadside assistance for vehicles with depleted batteries and replenish power for them through the AC slow charging socket. (3) The structure of the present utility model is simple and the operation is convenient. (4) An insurance device is provided to ensure the safety of the circuit. Description of the Drawings

[0016] Figure 1 It is a structural diagram of a high-voltage power distribution device according to an embodiment of the present utility model. Detailed Embodiments

[0017] The following is a more detailed description of the specific embodiments of the present utility model with reference to the accompanying drawings through the description of the embodiments, aiming to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present utility model, and to facilitate its implementation. It should be noted that the terms "first", "second", etc. described in this application are only for the convenience of describing the technical solution to distinguish different components, and do not limit this application. To make the technical solution of the present utility model clearer, the present utility model is explained and illustrated through the following embodiments.

[0018] A high-voltage power distribution device, as Figure 1 shown, the device includes a DC charging socket, a power battery module, a four-in-one high-voltage power distribution module, a load system, an engine, an extended-range generator, and an extended-range generator controller. Among them, the power battery module is respectively connected to the DC charging socket, the four-in-one high-voltage power distribution module, and the extended-range generator controller; the four-in-one high-voltage power distribution module is respectively connected to the load system and the extended-range generator controller; the extended-range generator controller is connected to the extended-range generator; the extended-range generator is mechanically connected to the engine, such as coaxial connection, etc. The structure of the present utility model is simple and the operation is convenient, which can meet the power consumption and charging needs of users and is applicable to a variety of vehicles, especially extended-range vehicles.

[0019] Specifically, the power battery module of this embodiment includes a power battery, a current sensor, a fuse device, a fast charge relay, a pre-charge relay, a pre-charge resistor, a main positive circuit relay, and a main negative circuit relay. Among them, the positive electrode of the power battery is sequentially connected in series with the current sensor and the fuse device, and then the first terminal and the second terminal are led out. The first terminal is connected to the positive electrode of the DC charging socket through the fast charge relay, and the second terminal is connected in series with the main positive circuit relay and then the third terminal is led out as the positive electrode of the power battery module; the whole formed by the series connection of the pre-charge relay and the pre-charge resistor is connected in parallel at both ends of the main positive circuit relay; the negative electrode of the power battery is connected to the main negative circuit relay and the fourth terminal and the fifth terminal are led out. The fourth terminal is connected to the negative electrode of the DC charging socket, and the fifth terminal is used as the negative electrode of the power battery module; the positive / negative electrodes of the power battery module are connected to the four-in-one high-voltage power distribution module and the range extender generator controller.

[0020] In this embodiment, the DC charging socket is used to charge the power battery. Among them, a fast charge relay is provided during charging. When the output voltage of the DC charging socket is relatively high, the fast charge relay will automatically switch to the fast charge channel to achieve fast charging; when the battery is charged to a certain extent, the fast charge relay will automatically switch to the slow charge channel to prevent overcharging of the battery and extend the battery life. At the same time, this embodiment also provides a pre-charge circuit composed of a pre-charge relay and a pre-charge resistor, which can avoid instantaneous large current impact during the charging of the power battery, thus ensuring battery safety.

[0021] The four-in-one high-voltage power distribution module of this embodiment includes an MCU (motor controller), a PDU (power distribution unit), an OBC (on-board charger), and a DC / DC converter. The MCU, PDU, OBC, and DC / DC are respectively connected to the power battery module; the MCU, PDU, OBC, and DC / DC are respectively connected to the range extender generator controller; the MCU, PDU, OBC, and DC / DC are respectively connected to the load system.

[0022] The load system of this embodiment includes a drive motor, an AC slow charge socket, a storage battery, a PTC (vehicle heater), an air-conditioning compressor, and a chiller. Among them, the drive motor is connected to the MCU, the AC slow charge socket is connected to the OBC, the storage battery is connected to the DC / DC converter, and the PTC, the air-conditioning compressor, and the chiller are respectively connected to the PDU.

[0023] When the power battery has sufficient power, the power battery can supply power to the drive motor, AC slow charging socket, battery, PTC, air conditioner compressor, and chiller through the four-in-one high-voltage power distribution module. Specifically, the MCU is used to invert the direct current of the power battery into three-phase alternating current to supply power to the drive motor; the PDU is used to distribute the power of the power battery to supply power to the PTC, air conditioner compressor, and chiller respectively; the OBC in this embodiment has a bidirectional inversion function. On the one hand, the external power supply is used to charge the power battery through the AC slow charging socket. On the other hand, the OBC is used to convert the power of the power battery into 220V for the user to supply power to household appliances through the AC slow charging socket, such as induction cookers, etc., and can also perform road rescue on vehicles with a dead battery, etc.; the DC / DC converter is used to convert the high-voltage direct current of the power battery into 12V low-voltage electricity and store it in the battery, so as to supply power to the vehicle's low-voltage system. The utility model supports a variety of electrical equipment, which not only meets the power consumption needs of common electrical equipment on the vehicle side, such as the drive motor, etc., but also effectively meets the growing power consumption equipment needs of users, such as the use of 220V household appliances.

[0024] When the power of the power battery is lower than a certain value, in this embodiment, the power battery can be directly charged through the DC charging socket, and fast charging is realized by means of a fast charging relay; slow charging can also be realized through the OBC and the AC slow charging socket; the engine can also be started to drive the range extender generator to generate electricity, and the range extender generator controller (GCU) then rectifies the three-phase alternating current generated by the range extender generator into direct current and supplies power to the electrical equipment through the four-in-one high-voltage power distribution module, and at the same time, the power battery can be supplemented with electricity. A variety of charging methods ensure that the user has sufficient power and reduce the user's charging and power consumption anxiety.

[0025] At the same time, this embodiment takes into account the problem of electrical safety, and multiple insurance devices are provided in the device of this embodiment. Specifically, insurance devices are respectively provided between the OBC and the power battery module or the range extender generator controller; insurance devices are respectively provided between the DC / DC converter and the power battery module or the range extender generator controller; an insurance device is provided between the PDU and the load system. Further, when the load is the PTC, in addition to the insurance device, a relay is also connected in series between the PDU and the PTC, so as to form overload protection and temperature control for the circuit. When the circuit has an overload or abnormal temperature, the relay can quickly cut off the circuit to protect the equipment from damage, improve the safety of the equipment, and extend the service life of the equipment. The range extender generator controller is respectively connected to the power battery module and the four-in-one high-voltage power distribution module through insurance devices. In this embodiment, the insurance device can be a fuse, etc., and can be flexibly selected according to the actual situation during specific implementation.

[0026] This application also proposes a vehicle, and the vehicle includes the above-mentioned high-voltage power distribution device.

[0027] The above has made an exemplary description of the present utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the present utility model is not limited by the above methods. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present utility model; or without improvement, and the above concept and technical solution of the present utility model are directly applied to other occasions, they are all within the protection scope of the present utility model.

Claims

1. A high voltage power distribution device, characterized in that: The device includes a DC charging station, a power battery module, a four-in-one high-voltage power distribution module, a load system, an engine, an extended-range generator, and an extended-range generator controller, wherein the power battery module is respectively connected to the DC charging station, the four-in-one high-voltage power distribution module, and the extended-range generator controller; the four-in-one high-voltage power distribution module is respectively connected to the load system and the extended-range generator controller; the extended-range generator controller is connected to the extended-range generator; and the extended-range generator is connected to the engine.

2. A high voltage power distribution device according to claim 1, characterized in that: The power battery module includes a power battery, a current sensor, a safety device, a fast charging relay, a pre-charging relay, a pre-charging resistor, a main positive circuit relay, and a main negative circuit relay, wherein the positive electrode of the power battery is connected in series with the current sensor and the safety device in sequence, and then a first terminal and a second terminal are led out, the first terminal is connected to the positive electrode of the DC charging seat through the fast charging relay, and the second terminal is connected in series with the main positive circuit relay, and then a third terminal is led out as the positive electrode of the power battery module; the pre-charging relay and the pre-charging resistor are connected in series as a whole and are connected in parallel at both ends of the main positive circuit relay; the negative electrode of the power battery is connected to the main negative circuit relay and a fourth terminal and a fifth terminal are led out, the fourth terminal is connected to the negative electrode of the DC charging seat, and the fifth terminal serves as the negative electrode of the power battery module; the positive / negative electrodes of the power battery module are connected to the four-in-one high-voltage power distribution module and the range-extended generator controller.

3. A high voltage power distribution device according to claim 1, characterized in that: The four-in-one high-voltage power distribution module includes an MCU, a PDU, an OBC, and a DC / DC converter. The MCU, PDU, OBC, and DC / DC are respectively connected to the power battery module; the MCU, PDU, OBC, and DC / DC are respectively connected to the extended-range generator controller; the MCU, PDU, OBC, and DC / DC are respectively connected to the load system.

4. A high voltage power distribution device according to claim 3, characterized in that: The load system includes a drive motor, an AC slow charging socket, a battery, a PTC, an air-conditioning compressor, and a refrigerator, wherein the drive motor is connected to the MCU, the AC slow charging socket is connected to the OBC, the battery is connected to the DC / DC converter, and the PTC, air-conditioning compressor, and refrigerator are respectively connected to the PDU.

5. A high voltage power distribution device according to claim 3, characterized in that: A safety device is provided between the OBC and the power battery module or the range-extending generator controller; a safety device is provided between the DC / DC converter and the power battery module or the range-extending generator controller; and a safety device is provided between the PDU and the load system.

6. A high voltage power distribution device according to claim 4, characterized in that: A safety device and a relay are connected in series between the PDU and the PTC.

7. A high voltage power distribution device according to claim 1, characterized in that: The range-extended generator controller is connected to the power battery module and the four-in-one high-voltage power distribution module respectively through a safety device.

8. A high voltage power distribution device according to any one of claims 2, 5, 6 and 7, characterized in that: The safety device is a fuse.

9. A vehicle, characterized in that: The vehicle comprises a high-voltage power distribution device according to any one of claims 1-8.

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