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Method for controlling a heat pump system

A heat pump system and control mode technology, which is applied to machines using waste heat, heat pumps, and machine operation modes, etc., can solve problems such as insufficient heating capacity to provide heat energy, insufficient heating capacity of heat pump systems to reach the desired temperature, etc., to improve performance. Effect

Active Publication Date: 2021-12-31
NINGBO GEELY AUTOMOBILE RES & DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some cases, the heating capacity of such heat pump systems is insufficient to provide the necessary thermal energy
For example, at very low ambient temperatures, the heating capacity of a heat pump system may not be sufficient to achieve the desired temperature in the passenger compartment of a battery electric vehicle (BEV) or plug-in hybrid electric vehicle (PHEV)

Method used

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  • Method for controlling a heat pump system
  • Method for controlling a heat pump system
  • Method for controlling a heat pump system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] figure 1 A heat pump system 1 is shown. The heat pump system includes: a compressor 2 for compressing a working fluid 3 of the heat pump system, an electric motor 4 for providing an output torque to drive the compressor 2, and for recovering energy emitted from the electric motor 4 by heating the working fluid 3 Heat device 5. Compressor 2 must run at a different compressor speed. The required speed is provided by controlling the electric motor 4 driving the compressor 2 . At each speed, a specific torque is required. Therefore, to maintain the required compressor speed, the motor must provide a torque determined by the load from the compressor. For example, the motor may be a PMSM (Permanent Magnet Synchronous Motor) type motor or a BLDC (Brushless Direct Current Motor) type motor.

[0030] The heat pump system 1 also includes an evaporator 6 in which the working fluid 3 is heated by heat from the surroundings, a condenser 7 in which heat is transferred from the w...

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PUM

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Abstract

A method for controlling a heat pump system (1; 10). The heat pump system (1; 10) comprises a compressor (2; 20) for compressing a working fluid (3; 30) of the heat pump system (1; 10) and for providing an output for driving the compressor (2; 20) torque of the electric motor (4; 40). The method comprises the steps of recovering heat emitted from the electric motor (4; 40) by heating the working fluid (3; 30), providing a first control mode and a second control mode for the electric motor (4; 40), and, with The electric motor (4; 40) is controlled in such a way that, for a given output torque of the electric motor (4; 40), the electric motor (4; 40) produces a higher torque in the second control mode than in the first control mode. high heat loss.

Description

technical field [0001] The invention relates to a method and a control unit for controlling a heat pump system. Furthermore, the invention relates to a vehicle comprising such a control unit. Background technique [0002] Electric vehicles are usually provided with a system for heating, ventilation and air conditioning (HVAC system) and preferably employ a heat pump system for heating / cooling. In some cases, the heating capacity of such heat pump systems is insufficient to provide the necessary thermal energy. For example, at very low ambient temperatures, the heating capacity of a heat pump system may not be sufficient to achieve the desired temperature in the passenger compartment of a battery electric vehicle (BEV) or plug-in hybrid electric vehicle (PHEV). This problem is usually solved by providing an additional electric heater. An additional electric heater heats the working fluid, which is then transferred to the interior of the vehicle via a so-called heater core....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B49/02F25B30/02
CPCF25B25/005F25B40/06F25B49/025F25B2400/0411F25B41/39F25B25/00F25B27/02F25B30/02F25B31/006F25B2313/008
Inventor K·尼克拉森J·海尔欣
Owner NINGBO GEELY AUTOMOBILE RES & DEV CO LTD