Heat recovery system of pure electric vehicle and pure electric vehicle
By designing a heat recovery system including drum brakes, air-conditioning heating system and cooling water circulation system in pure electric vehicles, the problem of mileage attenuation under low temperature conditions is solved, and effective heat recovery and energy consumption reduction are achieved. , improves the range.
Patent Information
- Application Number
- CN202421250652.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-03
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-06-03
AI Technical Summary
Pure electric vehicles have a mileage attenuated under low temperature conditions, and lack an effective heat recovery system to assist in heating and air conditioning, resulting in additional power consumption and shortening of range.
A heat recovery system including a drum brake, an air conditioning heating system and a cooling water circulation system is designed. When the drum brake reaches the auxiliary cooling condition, the cooling water enters the brake for auxiliary cooling; when the cooling water temperature is higher than the interior temperature, the cooling water enters the air-conditioning heating system to assist in heating.
The cooling water circulation system assists in cooling and heating, which reduces the heat fading of the drum brake, reduces the energy consumption of the air-conditioning heating system, and increases the mileage of pure electric vehicles.
Smart Images
Figure CN222522422U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pure electric vehicles, in particular to a heat recovery system of a pure electric vehicle and the pure electric vehicle. Background Art
[0002] With economic development and improved living standards, the sales and ownership of automobiles are increasing. With the development of environmental protection activities such as "low-carbon travel, energy conservation and emission reduction" and "green travel", the necessity and urgency of automobile energy conservation and emission reduction are becoming more prominent.
[0003] Due to the implementation of fuel vehicle restriction policies in many places, the range reduction of pure electric vehicles is still a problem that needs to be solved urgently due to the low temperature factor when driving at low temperatures, and it is also the focus of technical research and development of vehicle manufacturers. Traditional fuel vehicles can use the waste heat generated by the engine to heat the air conditioner, and the air conditioner does not consume extra energy in this mode. However, electric vehicles do not have such convenience. They must rely on the power provided by the battery pack to run the air conditioning system, which will lead to additional power consumption and further shorten the range. Utility Model Content
[0004] The present application provides a heat recovery system for a pure electric vehicle and a pure electric vehicle to at least solve one technical problem existing in the related art.
[0005] According to one aspect of an embodiment of the present application, a heat recovery system for a pure electric vehicle is provided, comprising: a drum brake, an air-conditioning and heating system, and a cooling water circulation system respectively connected to the drum brake and the air-conditioning and heating system; the cooling water circulation system is configured to control cooling water to enter the drum brake for auxiliary cooling when the drum brake reaches an auxiliary cooling condition, and to control cooling water to enter the air-conditioning and heating system for auxiliary heating when the temperature of the cooling water is higher than the temperature inside the vehicle.
[0006] As an optional embodiment, the air-conditioning heating system includes a heat pump air-conditioning water pump, and the cooling water circulation system includes: a cooling water circulation channel, which is respectively connected to the drum brake and the heat pump air-conditioning water pump; a controllable switch, which is arranged in the cooling water circulation channel, and is used to control the connection and closing of the cooling water circulation channel; a temperature acquisition module, which is connected to the controllable switch; the controllable switch is configured to control the connection and closing of the cooling water circulation channel according to the temperature signal acquired by the temperature acquisition module.
[0007] As an optional implementation, the controllable switch includes a solenoid valve.
[0008] As an optional implementation, the temperature acquisition module includes a temperature sensor.
[0009] As an optional implementation, the sampling frequency of the temperature sensor is 1 Hz.
[0010] As an optional implementation, the auxiliary refrigeration condition includes: the temperature of the temperature sensor is greater than a preset temperature.
[0011] According to another aspect of the present application, a pure electric vehicle is provided, including the heat recovery system of the pure electric vehicle.
[0012] In an embodiment of the present application, a heat recovery system for a pure electric vehicle is provided, including: a drum brake, an air conditioning and heating system, and a cooling water circulation system connected to the drum brake and the air conditioning and heating system respectively; the cooling water circulation system is configured to control the water in the air conditioning and heating system to enter the drum brake for auxiliary cooling when the drum brake reaches the auxiliary cooling condition, and to control the cooling water to enter the air conditioning and heating system for auxiliary heating when the temperature of the cooling water is higher than the temperature inside the vehicle. The addition of a cooling water circulation system to the drum brake can keep the temperature of the drum brake in a low temperature range and avoid the reduction of the braking efficiency due to thermal decay. At the same time, the cooling water is connected in series with the air conditioning and heating system of the electric vehicle to reduce the PTC energy consumption of the air conditioning and heating system of the electric vehicle and improve the driving range of the electric vehicle. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.
[0014] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0015] Figure 1 It is a modular schematic diagram of a heat recovery system for a pure electric vehicle provided according to an embodiment of the present application.
[0016] Figure 2 It is a modular schematic diagram of another heat recovery system for a pure electric vehicle provided according to an embodiment of the present application.
[0017] Reference numerals
[0018] 1 air conditioning and heating system; 2 cooling water circulation system, 21 cooling water circulation channel, 22 solenoid valve, 23 temperature sensor; 3 drum brake. DETAILED DESCRIPTION
[0019] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.
[0020] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, 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 "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.
[0021] Due to the implementation of fuel vehicle restriction policies in many places, the range reduction of pure electric vehicles is still a problem that needs to be solved urgently due to the low temperature factor when driving at low temperatures, and it is also the focus of technical research and development of vehicle manufacturers. Traditional fuel vehicles can use the waste heat generated by the engine to heat the air conditioner, and the air conditioner does not consume extra energy in this mode. However, electric vehicles do not have such convenience. They must rely on the power provided by the battery pack to run the air conditioning system, which will lead to additional power consumption and further shorten the range.
[0022] like Figure 1 As shown, an embodiment of the present application provides a heat recovery system for a pure electric vehicle, comprising: a drum brake 3, an air-conditioning and heating system 1, and a cooling water circulation system 2 respectively connected to the drum brake 3 and the air-conditioning and heating system 1; the cooling water circulation system 2 is configured to control the water in the air-conditioning and heating system 1 to enter the drum brake 3 for auxiliary cooling when the drum brake 3 reaches an auxiliary cooling condition, and to control the cooling water to enter the air-conditioning and heating system 1 for auxiliary heating when the temperature of the cooling water is higher than the temperature inside the vehicle.
[0023] Specifically, the drum brake 3 is added with a cooling water circulation system 2, which can keep the temperature of the drum brake 3 in a low temperature range to avoid the reduction of thermal decay braking performance. At the same time, the cooling water is connected in series with the electric vehicle air conditioning and heating system 1 to reduce the PTC energy consumption of the electric vehicle air conditioning and heating system 1 and improve the driving range of the electric vehicle.
[0024] like Figure 2 As shown, as an optional embodiment, the air-conditioning heating system 1 includes a heat pump air-conditioning water pump, and the cooling water circulation system 2 includes: a cooling water circulation channel 21, which is respectively connected to the drum brake 3 and the heat pump air-conditioning water pump; a controllable switch, which is arranged in the cooling water circulation channel 21, and is used to control the connection and closing of the cooling water circulation channel 21; a temperature acquisition module, which is connected to the controllable switch; the controllable switch is configured to control the connection and closing of the cooling water circulation channel 21 according to the temperature signal acquired by the temperature acquisition module.
[0025] As an optional implementation, the controllable switch includes a solenoid valve 22 .
[0026] As an optional implementation, the temperature acquisition module includes a temperature sensor 23 .
[0027] As an optional implementation, the sampling frequency of the temperature sensor 23 is 1 Hz.
[0028] As an optional implementation, the auxiliary cooling condition includes: the temperature of the temperature sensor 23 is greater than a preset temperature.
[0029] A cooling water circulation channel 21 is added to the drum brake 3 to cool the temperature of the drum brake 3 during the braking process, recover the brake heat to heat the cooling water, and cool the drum brake 3 by cooling the cooling water, which can avoid thermal decay of the braking efficiency and improve the braking stability. The cooling water circulation pipeline is connected to the heat pump air conditioning water pump through the solenoid valve 22. A temperature sensor 23 is installed in front of the solenoid valve 22. When the cooling water temperature is higher than the temperature inside the car, the solenoid valve 22 opens to heat the car. It can reduce the 1PTC energy consumption of the electric vehicle air conditioning heating system and improve the cruising range of the electric vehicle.
[0030] Heating time t=mc(T2-T1) / P, where m is mass, c is specific heat capacity, T2 is the final temperature of air conditioning heating, and T1 is the circulating water temperature. After the solenoid valve 22 is opened, the PTC heating time will be effectively reduced and energy consumption will be reduced.
[0031] Brake friction generates heat during braking:
[0032]
[0033] In the formula, m is the total weight of the car, v1 is the initial speed of the car during braking, g is the acceleration of gravity, i is the slope of the ramp, f is the rolling resistance coefficient, β is the braking force distribution coefficient, s is the tire slip rate during braking, and S is the braking distance. When the car brakes at high speed or for a long time, it will generate a lot of heat.
[0034] The sampling frequency of temperature sensor 23 is 1HZ, the temperature T1 of temperature sensor 23 is monitored, and the average temperature of the sensor under normal urban driving conditions within time t is recorded. Recorded in memory, where when During this stage, braking is more frequent, and the solenoid valve 22 is opened to cool down the drum brake 3 in time; When , the solenoid valve 22 is closed.
[0035] According to another aspect of the present application, a pure electric vehicle is provided, including the heat recovery system of the pure electric vehicle.
[0036] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.
[0037] If the integrated units in the above embodiments are implemented in the form of software functional units and sold or used as independent products, they can be stored in the above computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling one or more electronic devices (such as personal computers, servers, or network devices) to perform all or part of the steps of the methods described in the various embodiments of the present application.
[0038] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.
[0039] In the several embodiments provided in the present application, it should be understood that the disclosed client can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.
[0040] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution provided in this embodiment.
[0041] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.
[0042] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.
[0043] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.
Claims
1. A heat recovery system for a pure electric vehicle, characterized in that: include: A drum brake, an air conditioning and heating system, and a cooling water circulation system respectively connected to the drum brake and the air conditioning and heating system; The cooling water circulation system is configured to control cooling water to enter the drum brake for auxiliary cooling when the drum brake reaches the auxiliary cooling condition, and to control cooling water to enter the air conditioning heating system for auxiliary heating when the temperature of the cooling water is higher than the temperature inside the vehicle.
2. The heat recovery system for a pure electric vehicle as claimed in claim 1, characterized in that: The air conditioning and heating system includes a heat pump air conditioning water pump, and the cooling water circulation system includes: A cooling water circulation channel, connected to the drum brake and the heat pump air conditioning water pump respectively; A controllable switch, arranged in the cooling water circulation channel, for controlling the connection and closing of the cooling water circulation channel; A temperature acquisition module connected to the controllable switch; The controllable switch is configured to control the connection and closing of the cooling water circulation channel according to the temperature signal acquired by the temperature acquisition module.
3. The heat recovery system for a pure electric vehicle as claimed in claim 2, characterized in that: The controllable switch comprises a solenoid valve.
4. The heat recovery system for a pure electric vehicle as claimed in claim 2, characterized in that: The temperature acquisition module includes a temperature sensor.
5. The heat recovery system for a pure electric vehicle as claimed in claim 4, characterized in that: The sampling frequency of the temperature sensor is 1 Hz.
6. The heat recovery system for a pure electric vehicle as claimed in claim 5, characterized in that: The auxiliary cooling condition includes: the temperature of the temperature sensor is greater than a preset temperature.
7. A pure electric vehicle, characterized in that: A heat recovery system for a pure electric vehicle comprising the heat recovery system of any one of claims 1 to 6.