CN116533783A - Power electronic system integrating multi-module power distribution - Google Patents

Abstract

The invention discloses a power electronic system integrating multi-module power distribution, and belongs to the technical field of power distribution and control of new energy automobiles. Including battery high-voltage box, the power electronic device who is connected with battery high-voltage box, power electronic device is equipped with upper and lower two-layer, power electronic device upper strata includes electric capacity, main positive relay and IGBT module, power electronic device lower floor includes DCDC module, DCAC module and electric capacity block terminal. The power electronic system integrates the components such as the capacitor, the main positive relay, the IGBT module, the DCDC module, the DCAC module, the capacitor distribution box and the like in one device through the upper and lower layers of platforms, and can replace different components according to different requirements, so that the installation of connecting wiring harnesses and pipelines is reduced, the arrangement space of the whole vehicle is optimized, the cost reduction and efficiency enhancement of the whole vehicle are realized, and the follow-up maintenance and maintenance replacement are convenient.

Description

A power electronic system integrating multi-module power distribution

technical field

The invention belongs to the technical field of power distribution and control of new energy vehicles, and specifically relates to a power electronic system integrating multi-module power distribution.

Background technique

With the explosive growth of new energy vehicles, power distribution modules tend to be highly integrated and intelligent. The traditional power distribution module is composed of auxiliary drive controllers and multiple motor controllers. On the one hand, it occupies the layout space of the whole vehicle. The high and low voltage wiring harnesses and water pipes between multiple controllers increase the fault points and affect the aesthetics of the whole vehicle.

Contents of the invention

1. The technical problem to be solved by the invention

The purpose of the present invention is to solve the problems that the existing new energy vehicle power distribution module is complex in structure and inconvenient to use, install and maintain.

2. Technical solution

In order to achieve the above object, the technical scheme provided by the invention is:

A power electronic system integrating multi-module power distribution of the present invention includes a battery high-voltage box and a power electronic device connected to the battery high-voltage box. The power electronic device is provided with upper and lower layers. The upper layer of the power electronic device includes capacitors, The main positive relay and the IGBT module, the lower layer of the power electronic device includes a DCDC module, a DCAC module and a capacitor distribution box.

Preferably, the power electronic device is connected with a hydraulic motor and a drive motor, the IGBT module is used to supply power to drive the hydraulic motor and the drive motor, and there are nine IGBT modules.

Preferably, the power electronic device is connected with a PDU power distribution module.

Preferably, the upper layer of the power electronic device further includes copper bars.

Preferably, a heat dissipation component is provided between the two layers of the power electronic device, the heat dissipation component is a U-shaped liquid cooling module, and the heat dissipation component is used to dissipate heat from capacitors, IGBT modules, DCDC modules and DCAC modules.

Preferably, the DCDC module and the DCAC module are respectively connected in series with fuses.

Preferably, the main positive relay is connected with a motor controller after being connected in parallel with a pre-charging resistor, and the motor controller includes a hydraulic motor controller and a drive motor controller.

3. Beneficial effect

Compared with the prior art, the technical solution provided by the invention has the following beneficial effects:

A power electronic system integrating multi-module power distribution of the present invention includes a battery high-voltage box and a power electronic device connected to the battery high-voltage box. The power electronic device is provided with upper and lower layers. The upper layer of the power electronic device includes capacitors, The main positive relay and the IGBT module, the lower layer of the power electronic device includes a DCDC module, a DCAC module and a capacitor distribution box. The power electronic system integrates components such as capacitors, main positive relays, IGBT modules, DCDC modules, DCAC modules, and capacitor distribution boxes into one device through the upper and lower platforms. Different components can also be replaced according to different needs, reducing the need for connecting wire harnesses and The installation of the pipeline optimizes the layout space of the vehicle, reduces the cost and increases the efficiency of the vehicle, and facilitates subsequent maintenance, repair and replacement.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of a power electronic system integrating multi-module power distribution according to the present invention

FIG. 2 is a schematic diagram of the two-layer structure of the power electronic device of the present invention;

Fig. 3 is a schematic structural diagram of a power distribution module in the prior art.

Explanation of the labels in the schematic diagram:

100. Battery high voltage box; 200. Power electronic device; 210. Capacitor; 220. Main positive relay; 230. IGBT module; 240. Copper bar; 250. DCDC module; 260. DCAC module; 270. Capacitor distribution box; 300 , Hydraulic motor; 400, drive motor; 500, PDU power distribution module.

Detailed ways

In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

It should be noted that the terms "first" and "second" in the description and claims of the present application and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It should be understood that the data so used may be interchanged under appropriate circumstances for the embodiments of the application described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a sequence of steps or elements is not necessarily limited to the expressly listed instead, may include other steps or elements not explicitly listed or inherent to the process, method, product or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", The orientations or positional relationships indicated by "vertical", "horizontal", "horizontal", and "longitudinal" are based on the orientations or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation.

Moreover, some of the above terms may be used to indicate other meanings besides orientation or positional relationship, for example, the term "upper" may also be used to indicate a certain attachment relationship or connection relationship in some cases. Those skilled in the art can understand the specific meanings of these terms in this application according to specific situations.

Furthermore, the terms "mounted", "disposed", "provided", "connected", "connected", "socketed" should be interpreted broadly. For example, it may be a fixed connection, a detachable connection, or an integral structure; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediary; internal connectivity. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

Example 1

Referring to the accompanying drawings 1-3, a power electronic system integrating multi-module power distribution in this embodiment includes a battery high-voltage box 100 and a power electronic device 200 connected to the battery high-voltage box 100. The power electronic device 200 is equipped with upper and lower Two layers, the upper layer of the power electronic device 200 includes a capacitor 210 , the main positive relay 220 and the IGBT module 230 , and the lower layer of the power electronic device 200 includes a DCDC module 250 , a DCAC module 260 and a capacitor distribution box 270 . The power electronic system of this embodiment integrates components such as capacitor 210, main positive relay 220, IGBT module 230, DCDC module 250, DCAC module 260, and capacitor distribution box 270 into one device through the upper and lower platforms. Replacing different components reduces the installation of wiring harnesses and pipelines, optimizes the layout space of the vehicle, reduces costs and increases efficiency for the vehicle, and facilitates subsequent maintenance, repair and replacement.

The power electronic device 200 is connected with a hydraulic motor 300 and a drive motor 400 , the IGBT module 230 is used to supply power to drive the hydraulic motor 300 and the drive motor 400 , and there are nine IGBT modules 230 . Nine IGBT modules can provide a peak AC output capacity of 710A/560A, and can simultaneously drive large motors of 360KW and 240KW under a 600V high-voltage platform.

The power electronic device 200 is connected with a PDU power distribution module 230 . The upper layer of the power electronic device 200 further includes a copper bar 240 . A heat dissipation assembly is provided between the two layers of the power electronic device 200, the heat dissipation assembly is a U-shaped liquid cooling module, and the heat dissipation assembly is used to dissipate heat from the capacitor 210, the IGBT module 230, the DCDC module 250 and the DCAC module 260 . The DCDC module 250 and the DCAC module 260 are respectively connected in series with fuses. The main positive relay 220 is connected with a motor controller after being connected in parallel with a pre-charging resistor, and the motor controller includes a hydraulic motor controller and a drive motor controller.

The above-described embodiment only expresses a certain implementation mode of the present invention, and its description is relatively specific and detailed, but it should not be interpreted as limiting the patent scope of the present invention; it should be pointed out that for those of ordinary skill in the art That is to say, without departing from the concept of the present invention, several modifications and improvements can be made, which all belong to the protection scope of the present invention; therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (7)

1. A power electronic system for integrating multi-module power distribution, characterized by: the power electronic device comprises a battery high-voltage box (100) and a power electronic device (200) connected with the battery high-voltage box (100), wherein the power electronic device (200) is provided with an upper layer and a lower layer, the upper layer of the power electronic device (200) comprises a capacitor (210), a main positive relay (220) and an IGBT module (230), and the lower layer of the power electronic device (200) comprises a DCDC module (250), a DCAC module (260) and a capacitor distribution box (270).

2. A power electronic system for aggregating multi-module power distribution as defined in claim 1, wherein: the power electronic device (200) is connected with a hydraulic motor (300) and a driving motor (400), the IGBT modules (230) are used for supplying power to drive the hydraulic motor (300) and the driving motor (400), and 9 IGBT modules (230) are arranged.

3. A power electronic system for aggregating multi-module power distribution as defined in claim 1, wherein: the power electronic device (200) is connected with a PDU power distribution module (230).

4. A power electronic system for aggregating multi-module power distribution as defined in claim 1, wherein: the upper layer of the power electronic device (200) further comprises copper bars (240).

5. A power electronic system for aggregating multi-module power distribution as defined in claim 1, wherein: a heat dissipation assembly is arranged between two layers of the power electronic device (200), the heat dissipation assembly is a U-shaped liquid cooling module, and the heat dissipation assembly is used for dissipating heat of the capacitor (210), the IGBT module (230), the DCDC module (250) and the DCAC module (260).

6. A power electronic system for aggregating multi-module power distribution as defined in claim 1, wherein: the DCDC module (250) and the DCAC module (260) are respectively connected with fuses in series.

7. A power electronic system for aggregating multi-module power distribution as defined in claim 1, wherein: the main positive relay (220) is connected with the motor controller after being connected with the pre-charging resistor in parallel, and the motor controller comprises a hydraulic motor controller and a driving motor controller.