CN210168381U - High-voltage accessory device and electric vehicle - Google Patents

Abstract

The utility model provides a high-voltage accessory device and an electric vehicle, wherein the high-voltage accessory device physically integrates a charging module, a direct current conversion module and a high-voltage power distribution module, which are respectively positioned at the bottom, the middle and the top of the device; the charging module and the direct current conversion module are closely attached to the cooling substrate, and the cooling substrate is arranged between the charging module and the direct current conversion module, so that effective heat dissipation can be achieved. The utility model discloses a high pressure annex device has advantages such as small, the reliability is high, the quality is light, with low costs under the prerequisite that satisfies the functional requirement of itself.

Description

High-voltage accessory device and electric vehicle

Technical Field

The utility model relates to a system integration technical field, especially a high-pressure annex device and electric motor car between new forms of energy electric automobile core spare part.

Background

The high-voltage accessories are used as one of core components of the electric automobile, the integration level of the high-voltage accessories in the existing new energy electric automobile is reduced, the high-voltage accessories of the whole automobile such as a charging module OBC, a direct current conversion module DCDC, a high-voltage power distribution module PDU and the like are separately arranged, and the high-voltage accessories are controlled and interacted by low-voltage signals; the high-voltage accessory needs high-voltage protection and electromagnetic shielding in the vehicle, the requirement causes the independent shielding metal shell of the separating component requirement, the connection communication needs to shield a wire harness and the like, the space requirement on the whole vehicle is large, the weight cost is high, and the vehicle cost and the performance of the vehicle are affected.

Therefore, the high-voltage accessories tend to be light and integrated, but how to reasonably arrange the high-voltage accessories to meet the requirements of light weight and integration level becomes a technical problem which needs to be solved by the person skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of the above prior art's shortcoming, the utility model aims to provide a high-pressure annex device and electric motor car for it is low to solve among the prior art high-pressure annex integrated level, and it is big to occupy whole car space, technical problem that weight is with high costs.

To achieve the above and other related objects, the present invention provides a high-voltage accessory device, comprising:

a charging module;

the direct current conversion module is positioned on the charging module;

the cooling substrate is positioned between the charging module and the direct current conversion module, and a heat dissipation plate of the charging module and a heat dissipation plate of the direct current conversion module are attached to the cooling substrate;

the high-voltage power distribution module is positioned on the direct current conversion module and is electrically connected with the charging module and the direct current conversion module;

the box has an accommodation space, the module of charging, direct current conversion module, high voltage distribution module and cooling substrate set up in the box in the accommodation space.

Optionally, the high-voltage accessory device further comprises a first temperature sensor and a second temperature sensor; the probe of the first temperature sensor is inserted into the liquid inlet on the outer side of the box body, and the probe of the second temperature sensor is inserted into the liquid outlet on the outer side of the box body.

Optionally, the box body includes a bottom cover, a box body and an upper cover.

Optionally, the charging module is fixedly mounted on the box main body.

Optionally, the cooling substrate is mounted and fixed to the tank main body.

Optionally, the dc conversion module is mounted and fixed on the box main body.

Optionally, the high-voltage accessory device further comprises a power distribution busbar external member, wherein the power distribution busbar external member is used for achieving the purpose that the high-voltage power distribution module is electrically connected with all high-voltage electric equipment on a vehicle to which the high-voltage accessory device belongs.

Optionally, the cooling substrate is matched with the shapes of the heat dissipation plate of the charging module and the heat dissipation plate of the dc conversion module.

Optionally, the cooling substrate comprises an upper baffle, a lower baffle, and a partition plate disposed between the upper baffle and the lower baffle; the baffle plate is provided with a plurality of isolation structures which isolate the space enclosed by the upper baffle plate and the lower baffle plate into a plurality of cooling liquid channels.

Optionally, the position and density of the isolation structures in the cooling substrate are matched with the positions of the heat sink and the power unit in the charging module and the direct current conversion module.

Optionally, the heat dissipation plate of the dc conversion module serves as an upper baffle of the cooling substrate, and the heat dissipation plate of the charging module serves as a lower baffle of the cooling substrate.

The utility model also provides an electric motor car that is equipped with above-mentioned high-pressure annex device, the electric motor car includes:

a vehicle body;

the motor and the motor controller are arranged in the vehicle body;

the battery module is arranged in the vehicle body;

the high-voltage accessory device is arranged in the vehicle body, connected between the motor and motor controller and the battery module, and used for supplying power to the motor and the motor controller through the battery module;

wherein the high voltage accessory device comprises:

a charging module;

the direct current conversion module is positioned on the charging module;

the cooling substrate is positioned between the charging module and the direct current conversion module, and a heat dissipation plate of the charging module and a heat dissipation plate of the direct current conversion module are attached to the cooling substrate;

the high-voltage power distribution module is positioned on the direct current conversion module and is electrically connected with the charging module and the direct current conversion module; and

the box has an accommodation space, the module of charging, direct current conversion module, high voltage distribution module and cooling substrate set up in the box in the accommodation space.

By utilizing the utility model, the cooling plate of the charging module and the cooling plate of the direct current conversion module are attached to the upper surface and the lower surface of the cooling substrate to share one cooling substrate, thereby effectively reducing the size of the high-voltage accessory device and simultaneously reducing the weight of the high-voltage accessory device;

in addition, the probe of the temperature sensor is arranged in the liquid inlet and outlet at the outer side of the high-pressure accessory device box body, so that the size of the high-pressure accessory device can be further reduced, and meanwhile, the temperature of the cooling liquid can be more accurately monitored;

moreover, the position and the density of the isolation structure in the cooling substrate are reasonably designed according to the positions of the radiators and the power units in the charging module and the direct current conversion module, so that effective heat dissipation can be realized;

and, the utility model discloses a high-pressure annex device can use in the electric motor car, can reduce the occupation space of whole car, improves the reliability of electric motor car.

Drawings

Fig. 1 shows an exploded view of the high-pressure accessory device of the present invention.

Fig. 2 is a schematic structural view of a cooling substrate of the high-pressure accessory device according to the present invention.

Fig. 3 is a schematic view of the electric vehicle according to the present invention.

Description of the element reference numerals

1 charging module

2 DC conversion module

21 DC output interface

3 high-voltage distribution module

41 bottom cover

42 box main body

421 mounting point

43 upper cover

44 screw

5 female external member of arranging of distribution

61 first temperature sensor

62 second temperature sensor

71 inlet for cooling liquid

72 outlet for cooling liquid

8 Cooling the substrate

81 lower baffle

82 baffle plate

821,822 isolation structure

83 coolant channel

84 first opening

85 second opening

9 vehicle body

91 motor and motor controller

92 battery module

93 vehicle-mounted high-voltage electric equipment

94 high-voltage accessory device

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

Hereinafter, the terms "battery module" and "high voltage battery" may be used interchangeably and may refer to any of a variety of different rechargeable battery chemistries and configurations, including but not limited to lithium-ion (e.g., lithium-ion phosphate, lithium cobalt oxide, lithium iron phosphate, other lithium metal oxides, etc.), lithium-ion polymer, nickel metal hydride, nickel cadmium, nickel metal hydride, nickel zinc, silver zinc, or other battery types/configurations. The term "electric vehicle" is used herein to refer to an all-electric vehicle, also known as an EV, a plug-in hybrid vehicle, also known as a PHEV, or a Hybrid Electric Vehicle (HEV), wherein the hybrid electric vehicle employs multiple propulsion sources, one of which is an electric drive system

Please refer to fig. 1-3. It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the invention in a schematic manner, and only the components related to the invention are shown in the drawings rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, quantity and proportion of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.

Fig. 1 is an exploded view of the high-pressure accessory device of the present invention. As shown in fig. 1, high-voltage accessory device is including charging module 1, direct current conversion module 2, cooling substrate 8, high-voltage distribution module 3 and box, the utility model discloses a high-voltage accessory device structural layout is reasonable, and structural dimension is compact, can reduce whole car occupation space, and horizontal and perpendicular mounting means are satisfied to the instinctive ability, the utility model discloses a high-voltage accessory device satisfies the requirement of electric clearance, creepage distance, ground connection ann rule, and protection level is high.

The box body comprises a bottom cover 41, a box main body 42 and an upper cover 43, wherein the bottom cover 41 and the upper cover 43 are detachably mounted on the box main body 42 respectively and surround together to form an accommodating space, and the charging module 1, the direct current conversion module 2, the cooling substrate 8 and the high-voltage distribution module 3 are sequentially accommodated in the accommodating space from bottom to top.

Specifically, threaded holes matched with each other are formed in the circumferential position of the upper cover 43 and the circumferential position of the upper end of the box main body 42, and the upper cover 43 is fixed to the upper end of the box main body 42 through screws 44; threaded holes matched with each other are formed in the circumferential position of the bottom cover 41 and the circumferential position of the lower end of the box main body 42, and the bottom cover 41 is fixedly installed at the lower end of the box main body 42 through screws 44.

The housing may be, for example, a metal die casting, such as an aluminum die casting, the surface of which may have a sandblasting and oxidation treatment.

The charging module 1, the charging module 1 set up in on the bottom 41, the bottom of the module 1 that charges with the bottom 41 contact, the heating panel and the cooling substrate 8 laminating of top can utilize the cooling substrate 8 simultaneously, the bottom 41 dispels the heat, improves the radiating efficiency.

As an example, the charging module 1 may be, for example, an On Board Charger (OBC), the OBC has a bidirectional function, during charging, the ac input is 85 to 265Vac, the rated output power may be, for example, 6.6kW, the output is 240 + 450Vdc/25A, the output current and voltage are adjustable, and the system liquid cooling heat dissipation is performed, so that the charging module has protection functions such as input overvoltage and undervoltage, output overcurrent, output overvoltage, output short circuit, overtemperature, output reverse connection prevention, and the like; during inversion, the voltage 320-450V of a high-voltage battery (such as a lithium battery) is converted into the alternating current 220V for load use, and the output power can reach 3.3kW, for example.

The DC conversion module 2, i.e. the DC/DC module, basically functions to provide electric energy to vehicle accessory low-voltage electrical devices, such as lamps and meters, and to charge the auxiliary power supply, and functions similarly to the conventional automotive alternator. The vehicle-mounted power battery provides 380Vdc high voltage as direct current input of the DC/DC converter, and the 380Vdc high voltage is converted into 14Vdc low voltage through DC/DC to provide electric energy for an auxiliary power supply (a low-voltage storage battery) and vehicle-attached low-voltage electrical appliances. As shown in fig. 1, the DC conversion module 2 may be mounted and fixed on the box main body 42, for example, and is configured to convert a high-voltage DC into a low-voltage DC, and output the DC via a DC output interface 21, where one end of the DC output interface 21 is connected to the DC conversion module 2, and the other end of the DC output interface extends out of the box main body 42 and is connected to the vehicle-attached low-voltage electrical equipment and an auxiliary power supply.

As an example, the DC/DC module input voltage range: 300-450Vdc, 14V output and rated output power of 2000W, and has the protection functions of input overvoltage and undervoltage protection, output overcurrent protection, output short-circuit protection, output overvoltage protection, over-temperature protection and the like.

The direct current conversion module 2 with be provided with between the module 1 that charges cooling substrate 8, cooling substrate 8 is used for right the module 1 that charges, direct current conversion module 2 cool off, can adopt the mode of coolant liquid cooling for example, specifically, the heating panel of the module 1 that charges with direct current conversion module 2's heating panel with cooling substrate 8 laminating can improve the radiating efficiency.

As an example, the cooling substrate 8 is fixed to the box main body 42, for example, by bolting, or may be integrally formed, and fig. 2 shows a structure of the cooling substrate 8 according to the present invention. As shown in fig. 2, the cooling substrate has a hollow structure, the cooling substrate 8 includes an upper baffle plate (not shown), a lower baffle plate 81, and a partition plate 82 disposed between the upper baffle plate and the lower baffle plate 81, the partition plate 82 has a plurality of isolation structures 821 and a plurality of isolation structures 822, the isolation structures 821 are straight or curved isolation bars with different lengths, the isolation structures 822 are bump structures, and the isolation structures 821 and the isolation structures 822 isolate a space (heat exchange cavity) enclosed by the upper baffle plate and the lower baffle plate 81 into a plurality of cooling liquid channels 83; the cooling substrate 8 further comprises a first opening 84, a second opening 85, wherein the cooling fluid enters from the first opening 84 and exits from the second opening 85, wherein the isolation structure 822 abuts against the second opening 85, i.e. near the cooling fluid outlet 72.

It should be noted that the shapes of the cooling substrate 8, the cooling plate of the charging module 1 and the cooling plate of the dc conversion module 2 are matched, for example, the covering size of the heat exchange cavity of the cooling substrate 8 is slightly larger than the size of a component to be heat-dissipated (such as a heat sink or a power unit), so that the component to be heat-dissipated can be completely covered, which is beneficial to uniform heat dissipation.

In an embodiment, the heat dissipation plate of the dc conversion module 2 serves as an upper baffle of the cooling substrate 8, and the heat dissipation plate of the charging module 1 serves as a lower baffle of the cooling substrate 8, so that the weight of the high-voltage accessory device can be further reduced.

It should be noted that the position and density of the isolation structure 82 in the cooling substrate 8 are matched with the positions of the heat sink and the power unit in the charging module 1 and the dc conversion module 2. For example, the layout density of the isolation structures 82 at the positions corresponding to the heat sinks and the power units in the charging module 1 and the dc conversion module 2 may be encrypted, or the isolation structures 82 in the direction with a larger temperature gradient in the charging module 1 and the dc conversion module 2 may be refined, so as to form more coolant channels 83, increase the flowing speed of the coolant, and thus quickly take away the generated heat, thereby improving the heat dissipation efficiency.

As shown in fig. 1, the tank main body 42 is further provided with a cooling liquid inlet 71 and a cooling liquid outlet 72, the cooling liquid inlet 71 is communicated with the first opening 84 of the cooling base plate 8, and the cooling liquid outlet 72 is communicated with the second opening 85 of the cooling base plate 8.

In one embodiment, as shown in fig. 1, in order to better detect the cooling condition, a first temperature sensor 61 and a second temperature sensor 62 may be further disposed on the box main body 42; the probe of the first temperature sensor 61 is inserted into a coolant inlet 71 on the outside of the case, and the probe of the second temperature sensor 62 is inserted into a coolant outlet 72 on the outside of the case. It should be noted that, by arranging the probe of the temperature sensor in the liquid level in the cooling liquid inlet and outlet on the outer side of the high-pressure accessory device box body, the design does not occupy the inner space of the box body, the size of the high-pressure accessory device can be reduced, the probe of the temperature sensor can be ensured not to be influenced by the radiator and the power unit in the box body, and the temperature of the cooling liquid can be more accurately monitored.

It should be noted that, in the present invention, the cooling liquid may be, for example, a 50% by volume glycol solution or other suitable cooling liquid.

The high voltage Distribution module 3 is also called a Power Distribution Unit (PDU), and the high voltage Distribution module 3 converts a Power supply of a battery module (for example, a lithium storage battery) into a Power supply required by each Power module or Power system through an internal circuit to supply Power to each Power module or Power system. In addition to supplying power to the charging module 1 and the dc conversion module 2 in the high-voltage accessory device, the interfaces are also used to supply power to other high-voltage electric devices of the vehicle, such as a Heating Ventilation Air Conditioning (HVAC) Motor Controller (MCU) of an electric vehicle, a Positive Temperature Coefficient (PTC) of the electric heater, and the like, through a plurality of different interfaces disposed on a box of the high-voltage accessory device, and these interfaces are connected to different outputs of the high-voltage distribution module 3 through a distribution busbar assembly 5 described below.

As shown in fig. 1, the high-voltage accessory device further includes a power distribution busbar set 5, the power distribution busbar set 5 is used for realizing the high-voltage power distribution module 3 and the charging module 1 and the electric connection of the dc conversion module 2, that is, the high-voltage power distribution module 3 is provided with the charging module 1 and the power supply of the dc conversion module 2 through the power distribution busbar set 5, the power distribution busbar set 5 may include a copper bar, for example, the cross section of the copper bar may be a long conductor with a rectangular chamfer (fillet), so that a point discharge phenomenon may be avoided, and of course, the power distribution busbar set 5 may also be an aluminum bar or other suitable metal busbars.

As shown in fig. 1, the box body is further provided with a communication port (not shown), one end of the low-voltage communication port is connected to an external control unit (for example, a micro control unit MCU), and sends a control command and obtains product status information through the communication port, which may be a CAN bus communication interface, for example.

As shown in fig. 1, the box body is further provided with a plurality of mounting points 421 for mounting with a vehicle body bracket, only two of which are shown in the figure.

The tank body is further provided with a vent valve (not shown) which can balance the internal pressure and the external pressure in the high-pressure accessory device, thereby prolonging the service life of the high-pressure accessory device and ensuring the performance of the high-pressure accessory device.

The high-voltage accessory device of the utility model has the length between 400mm and 500mm, the width between 300mm and 360mm and the height between 150mm and 220 mm. By way of example, the high-pressure accessory device may have a length of, for example, 402 ± 2mm, 446 ± 2mm, 480 ± 2 mm; the high-voltage accessory device may have a width of, for example, 301 ± 2mm,331 ± 2mm or 350 ± 2mm and a height of, for example, 152 ± 2mm, 186 ± 2mm or 218 ± 2 mm. It should be noted that the length, width and height of the high-voltage accessory device of the present invention can be adjusted according to actual needs, and are not limited to the above description.

As shown in fig. 3, the present invention further provides an electric vehicle equipped with the above high-voltage accessory device, the electric vehicle includes a vehicle body 9; a motor and motor controller 91 provided in the vehicle body 9; a battery module 92 provided in the vehicle body 9; (ii) a And the high-voltage accessory device 94 is arranged in the vehicle body, the high-voltage accessory device 94 is connected between the motor and the motor controller 91, and the battery module 92 supplies power to the motor and the motor controller through the power accessory device so as to drive the electric vehicle to run.

Specifically, as shown in fig. 1, the high-voltage accessory device 94 includes a charging module 1; direct current conversion module 2, cooling substrate 8, high voltage distribution module 3, and the box. The specific structure of the high-pressure accessory device is described in detail in the relevant part above, and is not described in detail herein; it should be noted that the high-voltage accessory device 94 can use an external power source to charge the battery module 92, and can also convert the power source of the battery module 92 (e.g., a lithium battery) into a power source for the vehicle-mounted electric equipment of the electric vehicle including the motor and the motor controller 91 through an internal circuit.

The charging mode may include, for example, a slow charging mode in which the battery module 92 (e.g., a lithium secondary battery) is electrically connected to the high-voltage power distribution module 3 of the high-voltage accessory device 94, and a fast charging mode in which an external ac power source charges the battery module 92 through the charging module 1 (e.g., an on-board charger OBC) and the high-voltage power distribution module 3; in the fast charging mode, a dc power source, such as a charging post, charges the battery module 92 through the high voltage power distribution module 3 of the high voltage accessory device 94.

When the electric vehicle is powered, the battery module 92 inputs power to the high-voltage power distribution module 3 of the high-voltage accessory device 94 for conversion and distribution, and the power required by the vehicle-mounted electric equipment of the electric vehicle is supplied with power. For example, to power the DC conversion module 2 (e.g., DC/DC module) in the high-voltage accessory device 94, the DC/DC module converts an input power source for supplying electric power to vehicle-attached low-voltage electrical devices such as lamps and meters, or charging an auxiliary power source; for example, the charging module 1 (for example, an on-board charger OBC with a bidirectional function) may be powered, and the on-board charger OBC converts the high voltage of the battery module 92 into, for example, 220V alternating current for use by a load; for example, a plurality of different interfaces arranged on the box body of the high-voltage accessory device are used for supplying power to vehicle-mounted high-voltage electric equipment 93 such as a Heating Ventilation Air Conditioning (HVAC) system, a Motor Control Unit (MCU), an electric heater (PTC) and the like of the electric vehicle, and the Motor controller drives a Motor to Control the running states of the electric vehicle such as starting operation, advancing and retreating speed, climbing force and the like; please refer to the description of the modules above, which is not described herein.

It should be noted that, will the utility model discloses a high-pressure accessory device assembles in the electric motor car, can reduce the occupation space of whole car, improves the reliability of electric motor car simultaneously.

To sum up, the utility model provides a high-voltage accessory device, which comprises a charging module; the direct current conversion module is positioned on the charging module; the cooling substrate is positioned between the charging module and the direct current conversion module, and a heat dissipation plate of the charging module and a heat dissipation plate of the direct current conversion module are attached to the cooling substrate; the high-voltage power distribution module is positioned on the direct current conversion module and is electrically connected with the charging module and the direct current conversion module; the box has an accommodation space, the module of charging, direct current conversion module, high voltage distribution module and cooling substrate set up in the box in the accommodation space. The high-voltage accessory device of the utility model has reasonable structural layout and compact structural size, can reduce the occupied space of the whole vehicle, and utilizes the utility model to effectively reduce the size of the high-voltage accessory device and simultaneously reduce the weight of the high-voltage accessory device by laminating the heat dissipation plate of the charging module and the heat dissipation plate of the direct current conversion module with the upper surface and the lower surface of the cooling substrate and sharing one cooling substrate; the probe of the temperature sensor is arranged in the cooling liquid inlet and outlet on the outer side of the high-pressure accessory device box body, so that the size of the high-pressure accessory device can be further reduced, and meanwhile, the temperature of the cooling liquid can be more accurately monitored; the position and the density of an isolation structure in a cooling substrate are reasonably designed according to the positions of radiators and power units in the charging module and the direct current conversion module, so that effective heat dissipation can be realized; will the utility model discloses a high-pressure annex device assembles in the electric motor car, can reduce the occupation space of whole car, improves the reliability of electric motor car simultaneously. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

In the description herein, numerous specific details are provided, such as examples of components and/or methods, to provide a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that an embodiment of the invention can be practiced without one or more of the specific details, or with other apparatus, systems, assemblies, methods, components, materials, parts, and/or the like. In other instances, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of embodiments of the invention.

Reference throughout this specification to "one embodiment", "an embodiment", or "specific embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment, and not necessarily all embodiments, of the present invention. Thus, respective appearances of the phrases "in one embodiment", "in an embodiment", or "in a specific embodiment" in various places throughout this specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics of any specific embodiment of the present invention may be combined in any suitable manner with one or more other embodiments. It is to be understood that other variations and modifications of the embodiments of the invention described and illustrated herein are possible in light of the teachings herein and are to be considered as part of the spirit and scope of the present invention.

It will also be appreciated that one or more of the elements shown in the figures can also be implemented in a more separated or integrated manner, or even removed for inoperability in some circumstances or provided for usefulness in accordance with a particular application.

Additionally, any reference arrows in the drawings/figures should be considered only as exemplary, and not limiting, unless otherwise expressly specified. Further, as used herein, the term "or" is generally intended to mean "and/or" unless otherwise indicated. Combinations of components or steps will also be considered as being noted where terminology is foreseen as rendering the ability to separate or combine is unclear.

As used in the description herein and throughout the claims that follow, "a", "an", and "the" include plural references unless otherwise indicated. Also, as used in the description herein and throughout the claims that follow, unless otherwise indicated, the meaning of "in …" includes "in …" and "on … (on)".

The above description of illustrated embodiments of the invention, including what is described in the abstract of the specification, is not intended to be exhaustive or to limit the invention to the precise forms disclosed herein. While specific embodiments of, and examples for, the invention are described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the present invention, as those skilled in the relevant art will recognize and appreciate. As noted, these modifications may be made to the present invention in light of the foregoing description of illustrated embodiments of the invention and are to be included within the spirit and scope of the present invention.

The system and method have been described herein in general terms as providing details to facilitate the understanding of the invention. Furthermore, various specific details have been given to provide a general understanding of the embodiments of the invention. One skilled in the relevant art will recognize, however, that an embodiment of the invention can be practiced without one or more of the specific details, or with other apparatus, systems, assemblies, methods, components, materials, parts, and/or the like. In other instances, well-known structures, materials, and/or operations are not specifically shown or described in detail to avoid obscuring aspects of embodiments of the invention.

Thus, although the present invention has been described herein with reference to particular embodiments thereof, freedom of modification, various changes and substitutions are intended in the foregoing disclosure, and it should be understood that in some instances some features of the present invention will be employed without a corresponding use of other features without departing from the scope and spirit of the present invention as set forth. Accordingly, many modifications may be made to adapt a particular situation or material to the essential scope and spirit of the present invention. It is intended that the invention not be limited to the particular terms used in following claims and/or to the particular embodiment disclosed as the best mode contemplated for carrying out this invention, but that the invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Accordingly, the scope of the invention is to be determined solely by the appended claims.

Claims (10)

1. A high-voltage accessory device, comprising:

a charging module;

the direct current conversion module is positioned on the charging module;

the cooling substrate is positioned between the charging module and the direct current conversion module, and a heat dissipation plate of the charging module and a heat dissipation plate of the direct current conversion module are attached to the cooling substrate;

the high-voltage power distribution module is positioned on the direct current conversion module and is electrically connected with the charging module and the direct current conversion module; and

the box has an accommodation space, the module of charging, direct current conversion module, high voltage distribution module and cooling substrate set up in the box in the accommodation space.

2. The high-voltage accessory device of claim 1, further comprising a first temperature sensor and a second temperature sensor; the probe of the first temperature sensor is inserted into the liquid inlet on the outer side of the box body, and the probe of the second temperature sensor is inserted into the liquid outlet on the outer side of the box body.

3. The high-pressure accessory device of claim 1, wherein the case comprises a bottom cover, a case body, and an upper cover.

4. The high voltage accessory device of claim 3, wherein the charging module is mounted on and secured to the tank body.

5. The high-pressure accessory device of claim 3, wherein the cooling substrate is mounted on and secured to the tank body.

6. The high voltage accessory device of claim 3, wherein the DC conversion module is mounted to the tank body.

7. The high voltage accessory device of claim 1, further comprising a power distribution busbar assembly for electrically connecting the high voltage power distribution module to all high voltage electrical devices on a vehicle to which the high voltage accessory device belongs.

8. The high-voltage accessory device of claim 1, wherein the cooling substrate matches a shape of the heat sink of the charging module and the heat sink of the dc conversion module.

9. The high pressure accessory device of any one of claims 1-8, wherein the cooling base plate comprises an upper baffle, a lower baffle, and a spacer plate disposed between the upper baffle and the lower baffle; the baffle plate is provided with a plurality of isolation structures which isolate the space enclosed by the upper baffle plate and the lower baffle plate into a plurality of cooling liquid channels.

10. An electric vehicle, comprising:

a vehicle body;

the motor and the motor controller are arranged in the vehicle body;

the battery module is arranged in the vehicle body;

the high-voltage accessory device is arranged in the vehicle body, connected between the motor and motor controller and the battery module, and used for supplying power to the motor and the motor controller through the battery module;

wherein the high voltage accessory device comprises:

a charging module;

the direct current conversion module is positioned on the charging module;

the cooling substrate is positioned between the charging module and the direct current conversion module, and a heat dissipation plate of the charging module and a heat dissipation plate of the direct current conversion module are attached to the cooling substrate;

the high-voltage power distribution module is positioned on the direct current conversion module and is electrically connected with the charging module and the direct current conversion module; and

the box has an accommodation space, the module of charging, direct current conversion module, high voltage distribution module and cooling substrate set up in the box in the accommodation space.

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