Range extender system
By using a compressor refrigerant to cool the range extender, the problem of poor cooling effect in existing technologies is solved, the power generation is increased and the size and cost of the range extender are reduced, thus meeting the requirements of high performance and small size for the whole vehicle.
Patent Information
- Application Number
- CN202422866068.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-11-22
AI Technical Summary
Existing range extenders have poor cooling performance and cannot simultaneously meet the requirements of high power generation and small size.
The range extender is cooled by a compressor refrigerant, which circulates between the generator controller and the generator housing to achieve direct cooling.
The power generation capacity of the range extender has been increased, while the size and cost of the range extender have been reduced, meeting the requirements of high performance and small size for the whole vehicle.
Smart Images
Figure CN223523827U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of hybrid vehicle power device control technology, especially to a range extender system. BACKGROUND
[0002] As a kind of hybrid technology, range extender is more and more favored by various host factories and terminal customers. The main reason is that it solves the anxiety of customers' range. For the whole vehicle, it is desirable to have high power generation, small size and other requirements. The cooling scheme directly affects the power generation, torque and other parameters of the range extender. At present, the range extender mainly adopts water cooling scheme or oil cooling scheme. The water cooling scheme uses ethylene glycol and pure water as the cooling medium. The water flows into the generator controller housing waterway first, cools the generator controller, then flows into the generator housing to cool the generator, and finally flows out of the whole range extender system, and the radiator cools the coolant. Repeat the above process to achieve the purpose of cooling the range extender. The oil cooling scheme uses cooling oil and coolant as the medium. The generator controller is cooled by coolant. The scheme is consistent with the above water cooling scheme. The generator uses cooling oil as the medium, which is stored in the oil pan. The cooling oil is pumped out by the oil pump and divided into two circuits. One flows into the generator stator and sprays oil at both ends of the stator to cool the generator stator. The other circuit flows into the generator shaft, and the oil is also sprayed at both ends of the generator shaft to cool the generator stator. Finally, all the cooling oil flows into the radiator, and the cooling oil is cooled by the coolant in the radiator to achieve the purpose of cooling the range extender.
[0003] Water has a large heat capacity, but due to the insulation problem of the generator, it cannot directly cool the generator stator and rotor, and can only use an indirect cooling scheme with general cooling efficiency. Oil cooling can directly cool the generator, but its heat capacity is low and it cannot cool the generator controller, so its cooling effect is poor. UTILITY MODEL CONTENTS
[0004] The utility model provides a kind of range extender system to solve the problem of poor cooling effect in prior art.
[0005] According to one aspect of the utility model, a range extender system is provided, comprising: a compressor, a condenser, an expansion valve and a range extender.
[0006] The compressor, the condenser, the expansion valve and the range extender are connected in sequence.
[0007] The compressor is used to change the low-temperature and low-pressure refrigerant into high-temperature and high-pressure gaseous refrigerant.
[0008] The condenser is used to cool and cool the high-temperature and high-pressure gaseous refrigerant.
[0009] The expansion valve is used for converting the gaseous refrigerant cooled down into liquid refrigerant, and cooling down the liquid refrigerant again.
[0010] The liquid refrigerant cooled down and depressurized enters a generator controller heat dissipation channel of a generator in the range extender, enters a generator cavity through the generator controller heat dissipation channel, flows out of the generator cavity, and returns to the compressor, so as to cool the range extender.
[0011] According to another aspect of the present application, a control method of a range extender system is provided, which is executed by the range extender system according to any one of the embodiments of the present application, and the control method comprises:
[0012] The low-temperature and low-pressure refrigerant is changed into high-temperature and high-pressure gaseous refrigerant.
[0013] The high-temperature and high-pressure gaseous refrigerant is cooled down.
[0014] The gaseous refrigerant cooled down is converted into liquid refrigerant, and the liquid refrigerant is cooled down again.
[0015] The liquid refrigerant cooled down and depressurized enters a generator controller heat dissipation channel of a generator in the range extender, enters a generator cavity through the generator controller heat dissipation channel, flows out of the generator cavity, and returns to the compressor, so as to cool the range extender.
[0016] Optionally, after the liquid refrigerant is cooled down and depressurized again, the method further comprises:
[0017] The liquid refrigerant cooled down and depressurized enters a generator controller cavity, cools down the generator controller, and then enters a generator cavity to cool down the generator.
[0018] The technical scheme of the embodiment of the present application cools the range extender by using the compressor refrigerant, improves the power generation of the range extender, reduces the volume and cost of the range extender under the same power, improves the cooling effect, and better meets the requirements of high performance and small volume of the whole vehicle.
[0019] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS
[0020] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0021] Figure 1 A structure diagram of a range extender system provided by the embodiment of the present application is shown in the figure.
[0022] Figure 2 A flow chart of a control method of the range extender system provided by the embodiment of the present application is shown in the figure.
[0023] Figure 3 A flow chart of another control method of the range extender system provided by the embodiment of the present application is shown in the figure. DETAILED DESCRIPTION
[0024] In order to make the person skilled in the art better understand the present application, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical scheme in the embodiments of the present application, obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.
[0025] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.
[0026] Figure 1 A structure diagram of a range extender system provided by the embodiment of the present application is shown in the figure. Figure 1 The range extender system comprises a compressor 110, a condenser 120, an expansion valve 130 and a range extender 140.
[0027] The compressor 110, the condenser 120, the expansion valve 130 and the range extender 140 are sequentially connected.
[0028] The compressor 110 is used for changing the low-temperature and low-pressure refrigerant into high-temperature and high-pressure gaseous refrigerant.
[0029] The condenser 120 is used for cooling the high-temperature and high-pressure gaseous refrigerant.
[0030] The expansion valve 130 is used for converting the cooled gaseous refrigerant into liquid refrigerant and cooling and decompressing the liquid refrigerant again.
[0031] The liquid refrigerant after cooling and decompression enters the generator controller heat dissipation channel of the generator of the range extender 140, enters the generator cavity through the generator controller heat dissipation channel, flows out of the generator cavity and returns to the compressor, so that the range extender 140 is cooled.
[0032] The cooling process of the range extender system is as follows: the main cooling medium of the range extender system is the compressor refrigerant; the refrigerant is pressurized by the compressor 110, cooled by the condenser 120, heat-expanded by the expansion valve 130, the phase change of the refrigerant occurs, the cooled gaseous refrigerant is converted into liquid refrigerant, and the liquid refrigerant is cooled and decompressed again, the pressure and temperature of the gaseous refrigerant are lowered, the liquid refrigerant after cooling and decompression enters the generator controller heat dissipation channel of the generator of the range extender 140, enters the generator cavity through the generator controller heat dissipation channel, flows out of the generator cavity and returns to the compressor, so that the range extender 140 is cooled.
[0033] The technical scheme provided by the embodiment of the utility model adopts the compressor refrigerant to cool the range extender, improves the power generation of the range extender and reduces the volume and cost of the range extender under the same power, improves the cooling effect and can better meet the requirements of high performance and small size of the whole vehicle.
[0034] Figure 2 A flow chart of the control method of the range extender system is provided for the embodiment of the utility model, the control method is executed by the range extender system described in any embodiment of the utility model and has the same beneficial effects as the range extender system. Figure 2 The control method comprises the following steps:
[0035] S210, the low-temperature and low-pressure refrigerant is changed into high-temperature and high-pressure gaseous refrigerant.
[0036] S220, the high-temperature and high-pressure gaseous refrigerant is cooled.
[0037] S230, the gaseous refrigerant after cooling is converted into liquid refrigerant, and the liquid refrigerant is cooled again.
[0038] S240, the liquid refrigerant after cooling and pressure reduction enters the generator controller heat dissipation channel of the generator of the range extender, enters the generator cavity through the generator controller heat dissipation channel, flows out of the generator cavity, and returns to the compressor, so as to cool the range extender.
[0039] Figure 3 The flowchart of another control method of the range extender system provided by the embodiment of the utility model is based on the above-mentioned embodiments, and the foregoing embodiments are further refined. Referring to Figure 3 , the control method comprises:
[0040] S210, the low-temperature and low-pressure refrigerant is changed into high-temperature and high-pressure gaseous refrigerant.
[0041] S220, the high-temperature and high-pressure gaseous refrigerant is cooled.
[0042] S230, the gaseous refrigerant after cooling is converted into liquid refrigerant, and the liquid refrigerant is cooled again.
[0043] S240, the liquid refrigerant after cooling and pressure reduction enters the generator controller heat dissipation channel of the generator of the range extender, enters the generator cavity through the generator controller heat dissipation channel, flows out of the generator cavity, and returns to the compressor, so as to cool the range extender.
[0044] The technical scheme provided by the embodiment of the utility model adopts the compressor refrigerant to cool the range extender through different paths, improves the power generation of the range extender, reduces the volume and cost of the range extender under the same power, improves the cooling effect, and better meets the requirements of high performance and small volume of the whole vehicle.
[0045] It should be understood that the steps can be reordered, added or deleted using the various forms of flow shown above. For example, the steps described in the utility model can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical scheme of the utility model can be achieved, which is not limited herein.
[0046] The above specific embodiments do not constitute a limitation on the protection scope of the utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement within the spirit and principles of the utility model should be included in the protection scope of the utility model.
Claims
1. A range extender system, characterized in that, Comprise: A compressor, a condenser, an expansion valve and a range extender; The compressor, the condenser, the expansion valve and the range extender are connected in sequence; The compressor is used to change the low-temperature and low-pressure refrigerant into high-temperature and high-pressure gaseous refrigerant; The condenser is used to cool the high-temperature and high-pressure gaseous refrigerant; The expansion valve is used to convert the cooled gaseous refrigerant into liquid refrigerant, and to cool and depressurize the liquid refrigerant again; The liquid refrigerant after the cooling and depressurization enters the generator controller heat dissipation channel of the generator of the range extender, enters the generator cavity through the generator controller heat dissipation channel, flows out of the generator cavity, and returns to the compressor to cool the range extender.