Low-voltage new energy motor controller

Abstract

The utility model discloses a kind of low-voltage new energy motor controllers, belong to new energy motor controller technical field, including bottom shell and top cover, the bottom shell is fixedly connected with top cover by bolt, power board and capacitor board are respectively equipped in the bottom shell, control board is installed on the power board, the capacitor board bottom is equipped with multiple capacitors, wherein, the power board and capacitor board are fixedly connected by bolt, the bottom shell is attached with control board, electrolytic capacitor module is separated from control board in the utility model, constructs independent capacitor board and is cooled through heat dissipation pad and aluminum shell, while capacitor board is connected with main control board through standardized interface, to effectively solve the problem of capacitor heat dissipation, improve production efficiency and product cost, at the same time, the utility model reduces after-sales maintenance cost, supports capacitor board individual maintenance replacement, reduces maintenance loss, and capacitor board and capacitor thereon can fully utilize space, effectively reduce the space of controller.

Description

Technical Field

[0001] This utility model relates to the field of new energy motor controller technology, specifically a low-voltage new energy motor controller. Background Technology

[0002] Currently, low-voltage new energy motor controllers generally adopt a single-board or dual-board integrated design, placing large-capacity electrolytic capacitors and control circuits on the same control board. However, the above design scheme still has certain drawbacks:

[0003] 1. Large space occupation: Multiple large-volume electrolytic capacitors occupy 30%-50% of the PCB area, resulting in a crowded control board layout. Complex shielded wiring is required to meet EMC requirements.

[0004] 2. Model redundancy: Different power levels (such as 0.8kW / 1.5kW / 3kW / 5kW) require control boards with different numbers of capacitors, resulting in too many product models;

[0005] 3. Difficulty in heat dissipation: The temperature rise of the capacitor is significant during operation (measured >100℃), but it cannot effectively contact the heat dissipation shell due to the limited position of the control board. Therefore, a low-voltage new energy motor controller is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a low-voltage new energy motor controller to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a low-voltage new energy motor controller, including a bottom shell and a top cover, wherein the bottom shell and the top cover are fixedly connected by bolts, a power board and a capacitor board are respectively provided inside the bottom shell, a control board is installed on the power board, and multiple capacitors are installed at the bottom of the capacitor board;

[0008] The power board and capacitor board are fixedly connected by bolts, and the bottom shell is attached to the control board.

[0009] As a further preferred embodiment of this technical solution: a mounting groove is provided on one side of the bottom shell, and a heat dissipation pad is installed in the mounting groove. The mounting groove is provided to support multiple capacitors, and the heat generated by the capacitors is quickly transferred to the heat dissipation shell of the controller by means of the heat dissipation pad.

[0010] As a further preferred embodiment of this technical solution: all of the capacitors are installed in the mounting slots and are in contact with the heat dissipation pads. The heat generated by the above arrangement is transferred to the heat dissipation housing of the controller through the heat dissipation pads, thereby reducing the temperature of the capacitors.

[0011] As a further preferred embodiment of this technical solution: the power board has multiple mounting holes and multiple aluminum pillars that are adapted to the mounting holes. The bottom shell, the power board and the aluminum pillars are installed and fixed by screws through the mounting holes on the power board, and the aluminum pillars are used to support the power board and assist in heat conduction.

[0012] As a further preferred embodiment of this technical solution: two fixing plates are symmetrically fixedly connected to both sides of the bottom shell, and multiple fixing holes are provided on the fixing plates, so as to install and fix the entire device.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In this utility model, the electrolytic capacitor module is separated from the control board, an independent capacitor board is constructed, and heat is dissipated through a heat dissipation pad and an aluminum shell. At the same time, the capacitor board is connected to the main control board through a standardized interface, thereby effectively solving the problem of capacitor heat dissipation, improving production efficiency and product cost.

[0015] 2. This utility model can effectively reduce the temperature of electrolytic capacitors. The capacitors on the capacitor plate are directly attached to the bottom shell through heat dissipation pads, which facilitates heat dissipation and effectively reduces the capacitor temperature, thereby improving the lifespan of electrolytic capacitors (for every 10°C decrease in temperature, the lifespan of electrolytic capacitors is halved). At the same time, this application can greatly improve the assembly speed. Before the controller is assembled, the capacitor plate is inserted in one go by a vertical insertion machine, and then the component production is completed by wave soldering. The components are stored in the warehouse in advance, or they can be handed over to an external company to produce capacitor plates, which are then sent to the production line when the controller is assembled. This reduces the need for two medium and large-sized pieces of equipment, such as insertion machines and wave soldering machines, shortens the production line, saves assembly time, and speeds up the production cycle.

[0016] 3. This utility model reduces after-sales maintenance costs, supports individual maintenance and replacement of capacitor boards, reduces maintenance losses, and allows the capacitor board and its capacitors to make full use of space, effectively reducing the space of the controller by more than 30%. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a low-voltage new energy motor controller according to the present invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of the bottom shell of a low-voltage new energy motor controller according to this utility model;

[0019] Figure 3 This is an exploded structural diagram of a low-voltage new energy motor controller according to the present invention;

[0020] Figure 4This is a cross-sectional exploded view of the bottom shell of a low-voltage new energy motor controller according to this utility model;

[0021] Figure 5 This is a first structural schematic diagram of the power board, control board, and capacitor board in a low-voltage new energy motor controller according to this utility model.

[0022] Figure 6 This is a second structural diagram of the power board, control board, and capacitor board in a low-voltage new energy motor controller according to this utility model.

[0023] In the diagram: 1. Bottom shell; 11. Mounting slot; 12. Fixing plate; 121. Fixing hole; 2. Top cover; 3. Power board; 31. Mounting hole; 4. Aluminum pillar; 5. Control board; 6. Capacitor board; 7. Capacitor; 8. Heat dissipation pad. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] Example

[0026] Please see Figures 1-6 This utility model provides a technical solution: a low-voltage new energy motor controller, including a bottom shell 1 and a top cover 2. The bottom shell 1 and the top cover 2 are connected by bolts and threads. A power board 3 and a capacitor board 6 are respectively provided inside the bottom shell 1. A control board 5 is installed on the power board 3, and multiple capacitors 7 are installed at the bottom of the capacitor board 6.

[0027] The power board 3 and the capacitor board 6 are connected by bolts and threads, and the bottom shell 1 is attached to the control board 5.

[0028] In this embodiment, specifically: the power board 3 is used to support and connect the core components, providing basic support for the collaborative work of each component. It also provides an installation base, ensuring the stable installation of the power board 3 within the bottom shell 1, preventing it from shaking or shifting during the operation of the controller, and ensuring the stability of the connection between each component. The control board 5 serves as the core control function carrier, undertaking the task of regulating the motor's operating status, providing instruction and logic support for the overall operation of the controller, and connecting with components such as the power board 3 and capacitor board 6 to participate in the collaborative work within the controller, thereby ensuring signal transmission and functional coordination between each component, and jointly maintaining the normal operation of the motor controller.

[0029] In this embodiment, specifically: the capacitor plate 6 is used to support multiple capacitors 7, which provides a stable installation position for the capacitors 7, ensuring that the capacitors 7 can be arranged in an orderly manner inside the controller, and avoiding the impact of messy positions on the overall structural stability.

[0030] The capacitor plate 6 is arranged in an "E" shape, with holes on its upper, middle and lower horizontal sections. These holes facilitate the installation and fixing of the power board 3 and the capacitor plate 6, and are also used for conducting or transferring electrons.

[0031] In this embodiment, specifically: a mounting groove 11 is provided on one side of the bottom shell 1, and a heat dissipation pad 8 is installed in the mounting groove 11. The mounting groove 11 is used to support multiple capacitors 7.

[0032] In this embodiment, specifically: the heat dissipation pad 8 is used to quickly transfer the heat generated by the capacitor 7 during operation to the heat dissipation shell (bottom shell 1) of the controller, so as to achieve a rapid drop in the temperature of the capacitor 7. In this way, by timely heat dissipation, the capacitor 7 is prevented from being affected by excessive temperature, thus avoiding its working performance and service life, and ensuring the stable operation of the motor controller as a whole.

[0033] In this embodiment, specifically: multiple capacitors 7 are installed in the mounting slot 11, and multiple capacitors 7 are in contact with the heat dissipation pad 8. Through the above arrangement, heat is transferred to the controller heat dissipation shell (bottom shell 1) through the heat dissipation pad 8, thereby causing the temperature of the capacitors 7 to drop rapidly.

[0034] In this embodiment, specifically: the power board 3 has multiple mounting holes 31, and the power board 3 has multiple aluminum pillars 4 that are adapted to the mounting holes 31. The bottom shell 1, the power board 3 and the aluminum pillars 4 are installed and fixed by screws through the mounting holes 31 on the power board 3.

[0035] In this embodiment, specifically: the aluminum column 4 is lightweight and has a certain structural strength, so the power board 3 is supported by the aluminum column 4. This ensures the stability of the support, so that the power board 3 is not easy to shake or shift during the operation of the controller, and ensures the stability of the connection between the components. At the same time, it does not increase the overall weight of the controller too much, which meets the lightweight requirements of new energy equipment.

[0036] On the other hand, aluminum has good thermal conductivity. When the power board 3 generates heat during operation, the aluminum column 4 can help conduct some of the heat, which helps improve the heat dissipation conditions of the power board 3 and avoids affecting the working performance and service life of the power board 3 due to excessive local temperature, thereby ensuring the stable operation of the motor controller.

[0037] In this embodiment, specifically: the bottom shell 1 has two integrally formed fixing plates 12 on both sides, and the fixing plates 12 have multiple fixing holes 121, which are used to install and fix the entire device.

[0038] Working principle: The controller consists of a bottom shell 1 and a top cover 2, which are fixed together by bolts to form an integral structure. The internal core components include a power board 3, a control board 5, a capacitor board 6 and multiple capacitors 7 on it. Each component works together through a specific connection method.

[0039] The power board 3 serves as the foundation for supporting and connecting the core components. The control board 5 is installed on it. The control board 5 serves as the carrier of the core control functions, responsible for regulating the motor's operating status and providing instruction and logic support for the overall operation. The capacitor board 6 is used to fix multiple capacitors 7 and is fixedly connected to the power board 3 by bolts to ensure the stable transmission of signals and energy between the components.

[0040] Meanwhile, the mounting groove 11 inside the bottom shell 1 provides mounting space for the capacitor 7. The heat dissipation pad 8 inside the groove is in contact with the capacitor 7, which can quickly transfer the heat generated by the capacitor 7 to the bottom shell 1 to achieve efficient heat dissipation and prevent the capacitor 7 from being affected by high temperature. The aluminum pillar 4 on the power board 3 not only cooperates with the mounting hole 31 to achieve stable installation of the power board 3 and the bottom shell 1, but also assists in heat dissipation with its own characteristics, reducing the weight of the controller. The fixing plates 12 and fixing holes 121 on both sides of the bottom shell 1 are used for the overall installation and fixing of the controller to ensure its stability during operation.

[0041] Through the structural design and coordinated operation of each component, the controller achieves stable control of the low-voltage new energy motor;

[0042] Note: It needs to be further explained that before the controller is fully assembled, the capacitor board is inserted in one go by a vertical insertion machine, and then the component is produced by wave soldering. The components are stored in the warehouse in advance, or the capacitor board can be produced by an external company and delivered to the production line when the controller is fully assembled. This reduces the use of two medium and large-sized equipment, namely the insertion machine and the wave soldering machine.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-voltage new energy motor controller, comprising a bottom shell (1) and a top cover (2), wherein the bottom shell (1) and the top cover (2) are fixedly connected by bolts, characterized in that: The bottom shell (1) is provided with a power board (3) and a capacitor board (6), a control board (5) is installed on the power board (3), and multiple capacitors (7) are installed at the bottom of the capacitor board (6); The power board (3) and capacitor board (6) are fixedly connected by bolts, and the bottom shell (1) is attached to the control board (5).

2. The low-voltage new energy motor controller according to claim 1, characterized in that: An installation groove (11) is provided on one side of the bottom shell (1), and a heat dissipation pad (8) is installed in the installation groove (11).

3. A low-voltage new energy motor controller according to claim 2, characterized in that: Multiple capacitors (7) are installed in the mounting slot (11), and multiple capacitors (7) are in contact with the heat dissipation pad (8).

4. A low-voltage new energy motor controller according to claim 1, characterized in that: The power board (3) has multiple mounting holes (31) and multiple aluminum pillars (4) that are adapted to the mounting holes (31).

5. A low-voltage new energy motor controller according to claim 1, characterized in that: The bottom shell (1) has two fixing plates (12) symmetrically fixedly connected on both sides, and the fixing plates (12) have multiple fixing holes (121).

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