功率模块、控制装置、空调设备以及车辆
By designing a power module that integrates the motor and heater drive circuits in the compressor, the problem of large space occupation of the control circuit is solved, achieving high integration and low cost of compressor control, and improving the stability and compatibility of the system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG WELLING AUTO PARTS CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing technology, the control logic of the compressor and the heater are controlled by different controllers, which results in a large space occupied by the control circuit, reduces the control integration of the compressor and increases the product cost.
Design a power module comprising a substrate, a motor drive circuit, and a heater drive circuit, which are arranged in different layout areas and connected by pin assemblies. The module is packaged in a DIP29 package and integrates the motor and heater drive circuits. It uses MOSFETs or IGBTs as switching transistors, incorporates a temperature sensing device, and optimizes the bonding wire and pin design.
Without increasing the controller area, the integration and compatibility of compressor control are improved, manufacturing costs are reduced, and electromagnetic interference and crosstalk are reduced by optimizing the layout and pin design, thereby improving system stability.
Smart Images
Figure CN224520944U_ABST
Abstract
Claims
1. A power module, characterized by include: A substrate comprising multiple layout regions, wherein the different layout regions are designed independently of each other; The motor drive circuit and the heater drive circuit are respectively located in different layout areas, so as to drive an externally connected motor through the drive circuit and drive an externally connected heater through the heater drive circuit.
2. The power module of claim 1, wherein, Also includes: A first pin assembly, comprising a plurality of first pins, wherein the first pins are used to connect to the power terminals of the motor drive circuit and the heater drive circuit; The second pin assembly includes a plurality of second pins, which are used to connect to the signal terminals of the motor drive circuit and the heater drive circuit.
3. The power module of claim 2, wherein, The width of the first pin is greater than the width of the second pin.
4. The power module of claim 2, wherein, The heater drive circuit includes at least two switching transistors connected in series, and the motor drive circuit includes six switching transistors forming a three-phase full-bridge circuit.
5. The power module of claim 4, wherein, The first pin assembly includes eight first pins, and the second pin assembly includes twenty-one second pins.
6. The power module of claim 5, wherein, The positive terminal of the heater drive circuit is connected to a first pin via a first bonding wire, and the negative terminal of the heater drive circuit is connected to at least three second pins via a second bonding wire. The positive terminals of the three bridge arms in the three-phase full-bridge circuit are connected and connected to a first pin via a first bonding wire. The negative terminals of the three bridge arms are each connected to a first pin via a first bonding wire. The centers of the three bridge arms are each connected to a first pin via a first bonding wire. The signal terminals of each switching transistor in the heater drive circuit and the three-phase full-bridge circuit are each connected to a second pin via a third bonding wire.
7. The power module of claim 6, wherein, The diameter of the first bonding wire is greater than that of the second bonding wire, and the diameter of the second bonding wire is greater than that of the third bonding wire.
8. The power module of claim 4, wherein, The at least two switching transistors include at least one protection switching transistor and at least one modulation switching transistor.
9. The power module of claim 8, wherein, The signal terminal of the switching transistor includes a first pole and a second pole, wherein the gap between the pins connected to the first pole and the second pole of the modulation switching transistor is greater than the gap between the pins connected to the first pole and the second pole of the protection switching transistor.
10. The power module of claim 8, wherein, The at least two switching transistors may include one of the protection switching transistors and two of the modulation switching transistors, or may include two of the protection switching transistors and one of the modulation switching transistors.
11. The power module of claim 4, wherein, The switching transistor is a MOSFET or an IGBT.
12. The power module of claim 2, wherein, Also includes: A temperature sensing device is disposed on a corresponding layout area, and both ends of the temperature sensing device are respectively connected to a second pin.
13. The power module of any one of claims 2-12, wherein, The first pin assembly is located on one side of the power module, and the second pin assembly is located on the other side of the power module.
14. The power module of claim 13, wherein, The layout area of the motor drive circuit is closer to the first pin component than the layout area of the heater drive circuit, and the layout area of the heater drive circuit is closer to the second pin component than the layout area of the motor drive circuit.
15. The power module of claim 4, wherein, The power module is packaged in a DIP29 package.
16. The power module of claim 1, wherein, The power module has a length of 52.5mm and a width of 31mm.
17. A control device characterized by comprising: The power module of any one of claims 1-16.
18. An air conditioning apparatus characterized by comprising: The control device of claim 17 is connected to the compressor and the heater respectively for controlling the compressor and the heater.
19. A vehicle characterized by comprising: The air conditioning apparatus of claim 18.