Charging pile direct current feedback type power device driving system, power device and charging pile

Abstract

The utility model belongs to the technical field of power electronics, and provides a charging pile direct current feedback type power device driving system, a power device and a charging pile, comprising a controller and a plurality of driving circuits connected with the controller; and each driving circuit is connected with the power switches of different feedback type load devices in the power device. The controller is connected with the plurality of driving circuits, and each driving circuit is connected with the power switches of different feedback type load devices in the power device, so that the requirement of driving the plurality of feedback type load devices when a backup increasing mode is adopted is met.

Description

Technical Field

[0001] This utility model belongs to the field of power electronics technology, specifically relating to a DC feedback power device drive system for charging piles, power devices, and charging piles. Background Technology

[0002] With the rapid development of power electronics and the vigorous promotion of new energy sources, power electronic products have been widely used, such as solar converters and charging piles. On the one hand, facing the rapid increase in production capacity, factories are demanding increasingly higher levels of automation, and automated production places extremely high demands on the reliability of testing equipment; on the other hand, due to the need for energy conservation and emission reduction, regenerative loads have been widely used.

[0003] To increase the reliability of automated testing equipment in factories, backups are often added to prevent production line shutdowns and capacity impacts when one or more testing devices fail. This backup requirement necessitates multiple regenerative load cells, but current technology lacks a suitable drive system for such cells. Utility Model Content

[0004] To address the aforementioned problems, this invention proposes a DC feedback power device drive system for charging piles, a power device, and a charging pile. In this invention, the controller connects to multiple drive circuits, and each drive circuit is connected to the power switch of a different feedback load device in the power device, thus satisfying the drive requirements for multiple feedback load devices when a backup method is adopted.

[0005] According to some embodiments, the first solution of this utility model provides a DC feedback power device drive system for charging piles, which adopts the following technical solution:

[0006] A DC feedback power device drive system for a charging pile includes a controller and multiple drive circuits connected to the controller.

[0007] Each drive circuit is connected to the power switch of a different regenerative load device in the power device.

[0008] Furthermore, the driving circuit includes an isolation driving circuit and an insulated gate bipolar transistor driving circuit.

[0009] Furthermore, the controller is also connected to a communication circuit.

[0010] Furthermore, the controller is also connected to a sampling circuit.

[0011] According to some embodiments, the second aspect of this utility model provides a DC feedback power device for charging piles, which adopts the following technical solution:

[0012] A DC-DC regenerative power device for charging piles uses the DC-DC regenerative power device drive system for charging piles as described in the first aspect.

[0013] Furthermore, the power device includes multiple regenerative load devices, each of which has multiple power switches connected to its output and input terminals.

[0014] Furthermore, in the output and input terminals of different regenerative load devices, power switches of the same phase are connected in parallel.

[0015] Furthermore, each regenerative load device is equipped with a three-phase circuit at its input terminal and a two-phase circuit at its output terminal.

[0016] Furthermore, each phase circuit is equipped with two insulated-gate bipolar transistors.

[0017] According to some embodiments, the third solution of this utility model provides a charging pile, which adopts the following technical solution:

[0018] A charging pile that uses the DC feedback power device for charging piles as described in the second aspect.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] This invention connects multiple drive circuits through a controller. Each drive circuit is connected to the power switch of a different regenerative load device in the power device, thus satisfying the drive requirements of multiple regenerative load devices when a backup method is adopted. Attached Figure Description

[0021] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0022] Figure 1 This is a schematic diagram of the DC feedback power device for the charging pile of this utility model;

[0023] Figure 2 This is a schematic diagram of the drive system of this utility model;

[0024] Figure 3 This is a schematic diagram of the control circuit of this utility model;

[0025] Figure 4 This is a schematic diagram of the first side interface of the control circuit of this utility model;

[0026] Figure 5 This is a schematic diagram of the second-side interface of the control circuit of this utility model;

[0027] Figure 6 This is a schematic diagram of the third-side interface of the control circuit of this utility model;

[0028] Figure 7 This is a schematic diagram of the fourth-side interface of the control circuit of this utility model;

[0029] Figure 8 This is a schematic diagram of the control board output control signal circuit of this utility model;

[0030] Figure 9 This is a schematic diagram of the isolation drive circuit of this utility model;

[0031] Figure 10 This is a schematic diagram of the insulated gate bipolar transistor driving circuit of this utility model;

[0032] Figure 11 This is a schematic diagram of the communication circuit of this utility model;

[0033] Figure 12 This is a schematic diagram of the sampling circuit of this utility model. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0035] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0036] Example 1:

[0037] To increase the reliability of regenerative loads, meet the requirements of fully automated production, and implement backup methods, this embodiment provides a DC regenerative power device for charging piles. The power device includes multiple regenerative load units, each with multiple power switches connected to its output and input terminals. Power switches for the same phase are connected in parallel at the output and input terminals of different regenerative load units. Each regenerative load unit has a three-phase circuit and a two-phase circuit at its input and output terminals, respectively. Each phase circuit has two insulated-gate bipolar transistors.

[0038] like Figure 1As shown, the DC regenerative power device for the charging pile in this embodiment includes multiple regenerative load devices, and a first insulated-gate bipolar transistor (IGBT) Q101, a second IGBT Q102, a third IGBT Q103, a fourth IGBT Q104, a fifth IGBT Q105, a sixth IGBT Q106, a seventh IGBT Q107, an eighth IGBT Q108, a ninth IGBT Q109, and a tenth IGBT. The transistors listed are: Q110, Q201 (eleventh insulated-gate bipolar transistor), Q202 (twelfth insulated-gate bipolar transistor), Q203 (thirteenth insulated-gate bipolar transistor), Q204 (fourteenth insulated-gate bipolar transistor), Q205 (fifteenth insulated-gate bipolar transistor), Q206 (sixteenth insulated-gate bipolar transistor), Q207 (seventeenth insulated-gate bipolar transistor), Q208 (eighteenth insulated-gate bipolar transistor), Q209 (nineteenth insulated-gate bipolar transistor), and Q210 (twentieth insulated-gate bipolar transistor), up to the Nth insulated-gate bipolar transistor. Regenerative load devices can use conventional equipment and will not be detailed here.

[0039] This embodiment also includes a drive system for driving the DC regenerative power devices of the charging pile, such as... Figure 2 As shown, the drive system includes a controller and multiple drive circuits connected to the controller; each drive circuit is connected to the power switch of a different regenerative load device in the power device. The drive circuit includes an isolation drive circuit and an insulated-gate bipolar transistor drive circuit.

[0040] The controller connects multiple drive circuits, each of which is connected to the power switch of a different regenerative load device in the power device, thus satisfying the drive requirements of multiple regenerative load devices when a backup method is adopted.

[0041] like Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the controller in this embodiment uses an ARM platform MCU main control chip, which can provide high-speed, high-efficiency, and multi-functional module interfaces, and has abundant IO input / output interfaces, communication interfaces, and ADC interfaces.

[0042] like Figure 8 , Figure 9 and Figure 10The diagram shows the driving circuit in this embodiment, which includes a control board output control signal circuit, an isolation driving circuit, and an insulated gate bipolar transistor (IGBT) driving circuit. The SCTRL pins in the control board output control signal circuit are connected to the GPIO1F and GPIO2F pins in the controller. The isolation driving circuit is connected to the control board output control signal circuit via SCTRL pins. The IGBT driving circuit and the isolation driving circuit are connected via pins INV_BI_E and INV_BI_G.

[0043] Example 2:

[0044] This embodiment provides a drive system for driving the DC-DC regenerative power devices of the charging pile. Based on Embodiment 1, the controller is further connected to a communication circuit. The controller is also connected to a sampling circuit.

[0045] like Figure 11 As shown, the communication circuit adopts a CAN communication network circuit, which has the advantages of multi-point transmission and reception and strong anti-interference capability. DIP switch addresses identify the module, facilitating module identification, troubleshooting, and replacement. The communication circuit and the controller are connected via pins CANORX and CANOTX.

[0046] like Figure 12 The diagram shows the sampling circuit, in which pins PE and BATT+ are connected to the ADCO-type pins in the controller.

[0047] Example 3:

[0048] This embodiment provides a DC-DC regenerative power device for charging piles, using the DC-DC regenerative power device drive system described in Embodiment 1 or Embodiment 2. Specifically, the power device includes multiple regenerative load devices, each with multiple power switches connected to its output and input terminals. Power switches of the same phase are connected in parallel at the output and input terminals of different regenerative load devices. Each regenerative load device has a three-phase circuit and a two-phase circuit at its input and output terminals, respectively. Each phase circuit has two insulated-gate bipolar transistors.

[0049] Example 4:

[0050] This embodiment provides a charging pile that uses the DC feedback power device for charging piles as described in Embodiment 2; the specific configuration of the DC feedback power device in the charging pile is a conventional technology and will not be described in detail here.

[0051] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A DC feedback power device drive system for charging piles, characterized in that, Includes a controller and multiple drive circuits connected to the controller; Each drive circuit is connected to the power switch of a different regenerative load device in the power device.

2. The DC-DC regenerative power device drive system for charging piles as described in claim 1, characterized in that, The driving circuit includes an isolation driving circuit and an insulated gate bipolar transistor driving circuit.

3. The DC regenerative power device drive system for charging piles as described in claim 1, characterized in that, The controller is also connected to a communication circuit.

4. The DC-DC regenerative power device drive system for charging piles as described in claim 1, characterized in that, The controller is also connected to a sampling circuit.

5. A DC feedback power device for charging piles, characterized in that, The charging pile DC feedback power device drive system as described in any one of claims 1-4 was used.

6. The DC regenerative power device for charging piles as described in claim 5, characterized in that, The power device includes multiple regenerative load devices, each of which has multiple power switches connected to its output and input terminals.

7. The DC regenerative power device for charging piles as described in claim 6, characterized in that, In the output and input terminals of different regenerative load devices, power switches of the same phase are connected in parallel.

8. The DC feedback power device for charging piles as described in claim 6, characterized in that, Each regenerative load device has a three-phase circuit at its input and a two-phase circuit at its output.

9. The DC feedback power device for charging piles as described in claim 8, characterized in that, Each phase circuit has two insulated gate bipolar transistors.

10. A charging pile, characterized in that, The DC feedback power device for the charging pile as described in claim 5 was used.

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