A battery heating system applied to a hybrid power device and a hybrid power device
Patent Information
- Application Number
- CN202522500929.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-25
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-11-25
AI Technical Summary
[0014]本申请的应用于混合动力设备的电池加热系统及混合动力设备中，电池加热系统包括发动机冷却装置、电池温度调节装置、第一管路、第一阀门组与第二阀门组；发动机冷却装置包括第二管路，第二管路用于输送对发动机进行冷却的工作介质；电池温度调节装置包括第三管路，第三管路用于输送对电池进行温度调节的工作介质；第一管路配置在电池所在的位置处，并用于输送工作介质；第二管路与第一管路之间通过第一阀门组连通或断开；第三管路与第一管路之间通过第二阀门组连通或断开。本申请的技术方案，可以利用发动机余热为电池主动加热，还可以通过电池温度调节装置调节电池温度，保证电池正常放电，提高整车对环境温度的适应性。
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Figure CN224908130U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery technology, specifically to a battery heating system and hybrid power equipment. Background Technology
[0002] With increasing emphasis on environmental protection and growing energy scarcity, hybrid technology is being widely applied to various vehicles and construction machinery. Hybrid systems are powered by batteries to enable operation, movement, and the functioning of electronic components. However, due to the electrochemical characteristics of the batteries, they cease discharging in extreme low-temperature environments (e.g., -40°C), severely impacting the vehicle's normal operation. External physical methods such as insulation cotton and heat-resistant clothing are commonly used, but their insulation effectiveness is generally limited. Furthermore, the battery's discharge efficiency decreases when the battery temperature exceeds its theoretical design range. Therefore, current vehicle technologies exhibit poor temperature adaptability. Utility Model Content
[0003] To address the aforementioned technical problems, this application provides a battery heating system and hybrid power equipment applicable to hybrid power systems. This system can utilize engine waste heat to actively heat the battery and can also regulate the battery temperature through a battery temperature regulation device to ensure normal battery discharge and improve the vehicle's adaptability to ambient temperature.
[0004] To solve the above-mentioned technical problems, this application provides a battery heating system for hybrid power equipment, including an engine cooling device, a battery temperature regulating device, a first pipeline, a first valve group and a second valve group; The engine cooling device includes a second pipe for conveying a working medium for cooling the engine; The battery temperature regulation device includes a third pipeline for conveying a working medium for regulating the battery temperature. The first conduit is located at the position of the battery and is used to transport the working medium; The second pipeline is connected to or disconnected from the first pipeline via the first valve group; The third pipeline is connected to or disconnected from the first pipeline via the second valve group.
[0005] In some embodiments, a controller is also included, wherein the first valve group and the second valve group are respectively connected to the controller.
[0006] In some embodiments, the first valve group and the second valve group are solenoid valves.
[0007] In some embodiments, the second pipeline includes a first connection point and a second connection point, the first pipeline includes a third connection point and a fourth connection point, the first connection point and the third connection point are connected through a fourth pipeline, and the second connection point and the fourth connection point are connected through a fifth pipeline; The first valve group includes a first valve and a second valve, with the first valve located in the fourth pipeline and the second valve located in the fifth pipeline.
[0008] In some embodiments, the engine cooling device further includes a radiator disposed in the second pipeline; One of the first connection and the second connection is near the inlet of the radiator, and the other of the first connection and the second connection is near the outlet of the radiator.
[0009] In some embodiments, the battery temperature regulating device further includes a temperature regulating component, and the third pipeline includes a second portion corresponding to the inlet of the temperature regulating component and a first portion corresponding to the outlet of the temperature regulating component; The first pipeline includes a fifth connection and a sixth connection, the second valve group includes a third valve and a fourth valve, the first part is connected to the fifth connection, the second part is connected to the sixth connection, the third valve is located in the first part, and the fourth valve is located in the second part.
[0010] In some embodiments, the third connection point and the fifth connection point are the same connection point on the first pipeline, and the fourth connection point and the sixth connection point are the same connection point on the first pipeline.
[0011] In some embodiments, the third connection and the fifth connection are located at one of the inlet and outlet of the first pipeline, and the fourth connection and the sixth connection are located at the other of the inlet and outlet of the first pipeline.
[0012] In some embodiments, the first valve group and the second valve group are disposed close to the first pipeline.
[0013] This application also provides a hybrid power device, including the battery heating system applied to the hybrid power device as described above.
[0014] This application discloses a battery heating system for hybrid power equipment and the hybrid power equipment itself. The battery heating system includes an engine cooling device, a battery temperature regulating device, a first pipeline, a first valve group, and a second valve group. The engine cooling device includes a second pipeline for conveying a working medium for cooling the engine. The battery temperature regulating device includes a third pipeline for conveying a working medium for regulating the battery temperature. The first pipeline is located at the battery location and is used to convey the working medium. The second pipeline is connected to or disconnected from the first pipeline via the first valve group. The third pipeline is connected to or disconnected from the first pipeline via the second valve group. This technical solution can utilize engine waste heat for active battery heating and can also regulate battery temperature through the battery temperature regulating device, ensuring normal battery discharge and improving the vehicle's adaptability to ambient temperature. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of a battery heating system applied to a hybrid power device, according to one embodiment.
[0016] Figure 2 This is a schematic diagram of the connection structure between the controller and the valve in a battery heating system according to one embodiment. Detailed Implementation
[0017] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.
[0018] Unless otherwise defined, 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 application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. In this application, "each" includes one or more items.
[0019] Figure 1 This is a schematic diagram of a battery heating system applied to a hybrid power device, according to one embodiment. Figure 2 This is a schematic diagram illustrating the connection structure between the controller and the valve in a battery heating system according to one embodiment. Figure 1 and Figure 2As shown, a battery heating system for a hybrid power device according to this embodiment includes an engine cooling device 1, a battery temperature regulating device 2, a first pipeline 3, a first valve group 5, and a second valve group 6.
[0020] The power system of the hybrid power unit includes an engine 12. An engine cooling device 1 is used to cool the engine 12 to ensure it operates within its design temperature range. The engine cooling device 1 includes a second pipe 11 for conveying the working medium used to cool the engine 12. The working medium used to cool the engine 12 is typically a mixture of water, antifreeze (such as ethylene glycol or propylene glycol), and additives such as corrosion inhibitors and defoamers. Its main characteristics are low-temperature antifreeze properties (freezing point down to -68°C) and high-temperature anti-boiling properties (boiling point above 100°C), while also inhibiting metal corrosion and scale formation. The engine cooling device 1 can adopt the same design as existing technologies, which will not be described further here.
[0021] In extremely low temperature environments, with the vehicle in ON position and the engine 12 started with the help of the cold start system, the engine 12 idles, converting mechanical energy into heat energy. The working medium in the engine cooling device 1 circulates through the second pipe 11. As the working medium flows through the engine 12, it cools the engine 12. Simultaneously, due to heat conduction, the temperature of the working medium flowing through the engine 12 in the second pipe 11 also rises. In related technologies, the heated working medium enters the radiator 13 through the second pipe 11 for heat dissipation, cooling the working medium, and then continues to circulate to cool the engine 12.
[0022] The battery temperature regulating device 2 includes a third conduit 21 for conveying a working medium for regulating the temperature of the battery 4. The battery temperature regulating device 2 has cooling and / or heating functions, providing a working medium at the required temperature to regulate the temperature of the battery 4. The battery temperature regulating device 2 is powered by the battery 4. In extremely low-temperature environments, when the battery 4 cannot discharge normally, the battery temperature regulating device 2 will not operate. When the battery 4 begins to discharge normally, the chemical and electrochemical reactions and mass transfer within the battery 4 will cause the battery temperature to rise. At this time, because the battery 4 has begun to discharge normally, the battery temperature regulating device 2 can operate to regulate the temperature of the working medium in the third conduit 21, thereby enabling the use of the regulated working medium to regulate the battery temperature.
[0023] The first conduit 3 is located at the position of the battery 4 and is used to transport the working medium. The battery 4 can be installed in the form of multiple battery pack modules. A temperature sensor is installed inside the battery pack to detect the battery temperature. The first conduit 3 passes through the area inside the battery pack that requires temperature regulation (such as areas prone to temperature concentration or around each battery 4), and changes the battery temperature through heat conduction.
[0024] The second pipe 11 is connected to or disconnected from the first pipe 3 via the first valve group 5. When the second pipe 11 is connected to the first pipe 3 via the first valve group 5, part of the working medium in the second pipe 11 enters the first pipe 3, using the higher temperature working medium in the second pipe 11 to heat the battery 4, raising the ambient temperature of the battery 4 to a temperature range that allows the battery 4 to discharge normally. According to relevant tests, the highest outlet temperature of the working medium when the engine 12 is idling is approximately 65°C, a temperature that will not affect the performance of the battery 4. When the second pipe 11 is disconnected from the first pipe 3 via the first valve group 5, the working medium in the second pipe 11 no longer enters the first pipe 3 and can be used entirely for cooling the engine 12. It should be noted that when the second pipe 11 is connected to the first pipe 3 via the first valve group 5, the opening degree of the first valve group 5 can be 100% or other set values, such as 50%, 70%, etc.
[0025] The third pipe 21 is connected to or disconnected from the first pipe 3 via the second valve group 6. When the third pipe 21 is connected to the first pipe 3 via the second valve group 6, part or all of the working medium in the third pipe 21 enters the first pipe 3. The temperature-regulated working medium in the third pipe 21 is used to regulate the temperature of the battery 4, ensuring that the battery 4 operates within the design temperature range and guaranteeing the discharge efficiency of the battery 4. When the third pipe 21 is disconnected from the first pipe 3 via the second valve group 6, the working medium in the third pipe 21 no longer enters the first pipe 3. At this time, heating or cooling of the working medium in the third pipe 21 can be stopped, and the working medium in the third pipe 21 is in an internal circulation state or a stopped state. To better integrate the functions of the engine cooling device 1 and the battery temperature regulation device 2, the working medium in the third pipe 21 is the same as the working medium in the second pipe 11. It should be noted that when the third pipeline 21 is connected to the first pipeline 3 through the second valve group 6, the opening degree of the second valve group 6 can be 100% or other set values, such as 50%, 70%, etc.
[0026] With the above structure, the temperature of battery 4 can be regulated using two relatively independent devices, suitable for different stages of battery 4's use. In the low-temperature stage where battery 4 cannot discharge, the waste heat from the engine 12 of the engine cooling device 1 can be used to quickly heat the battery 4 to bring it to discharge conditions. In the higher temperature stage where the battery can discharge, the battery temperature regulation device 2 can be used to more accurately regulate the battery temperature, resulting in higher discharge efficiency. Simultaneously, the valve design ensures that the operation of the engine cooling device 1 and the battery temperature regulation device 2 does not interfere with each other.
[0027] In some embodiments, the first valve group 5 and the second valve group 6 can be manually or automatically controlled. In one scenario, temperature data collected by a temperature sensor inside the battery pack can be displayed on a terminal or the display screen of a hybrid power device. The operator can manually control the first valve group 5 and the second valve group 6 according to temperature changes and needs, including directly opening or closing the first valve group 5 and the second valve group 6, or triggering commands via an on / off button. In another scenario, the system automatically analyzes the temperature data collected by the temperature sensor and sends commands to open or close the first valve group 5 and the second valve group 6. For example, when the battery temperature is below a preset temperature threshold, the first valve group 5 opens, the second valve group 6 closes, and the second pipe 11 connects to the first pipe 3. When the battery temperature reaches the preset temperature threshold, the second valve group 6 opens, the first valve group 5 closes, and the third pipe 21 connects to the first pipe 3. At this time, after a preset delay, the battery temperature regulating device 2 starts working, adjusting the battery temperature based on preset cooling control logic and / or heating control logic.
[0028] In some embodiments, such as Figure 2 As shown, the battery heating system also includes a controller 9, and a first valve group 5 and a second valve group 6 are respectively connected to the controller 9. In some embodiments, the first valve group 5 and the second valve group 6 are solenoid valves. The controller 9, in response to user operation commands or analysis results of battery temperature, sends opening or closing commands to the first valve group 5 and the second valve group 6, thereby regulating the temperature of the battery 4 at different stages of battery use.
[0029] In some embodiments, the second pipeline 11 includes a first connection 111 and a second connection 112, the first pipeline 3 includes a third connection and a fourth connection, the first connection 111 and the third connection are connected by a fourth pipeline 8, and the second connection 112 and the fourth connection are connected by a fifth pipeline 7. The first valve group 5 includes a first valve 51 and a second valve 52, the first valve 51 is disposed in the fourth pipeline 8, and the second valve 52 is disposed in the fifth pipeline 7. The fourth pipeline 8 and the second pipeline 11 form a three-way structure at the first connection 111, and the fifth pipeline 7 and the second pipeline 11 form a three-way structure at the second connection 112. Thus, when the second pipeline 11 is connected to the first pipeline 3, the working medium in the second pipeline 11 can enter the first pipeline 3 through the fourth pipeline 8 and the fifth pipeline 7 to heat the battery 4.
[0030] In some embodiments, the engine cooling device 1 further includes a radiator 13 disposed in the second pipe 11. One of the first connection 111 and the second connection 112 is close to the inlet of the radiator 13, and the other of the first connection 111 and the second connection 112 is close to the outlet of the radiator 13. In this embodiment, the first connection 111 is close to the inlet of the radiator 13, and the second connection 112 is close to the outlet of the radiator 13. In the engine cooling device 1, after the working medium comes out of the engine 12, it enters the radiator 13 through the inlet to dissipate heat and cool down, and then flows back to the engine 12 from the outlet of the radiator 13. When the second pipe 11 is connected to the first pipe 3, part of the working medium flows from the first connection 111 to the fourth pipe 8, and then enters the first pipe 3. After heating the battery 4, the temperature of the working medium flowing out of the first pipe 3 decreases, and it returns to the second pipe 11 from the fifth pipe 7 and the second connection 112. This part of the working medium does not need to pass through the radiator 13, and its temperature is also reduced. This makes up for the engine temperature rise that may be caused by the part of the working medium not being able to pass through the radiator 13 for cooling, ensuring the normal operation of the engine 12. At the same time, the delivery pressure of the working medium is more rationally distributed. In actual implementation, the first connection 111 and the second connection 112 can both be set between the working medium outlet of the engine 12 and the inlet of the radiator 13. The distance between the first connection 111 and the second connection 112 can be reasonably set according to the pipeline design. In this way, the working medium flowing back from the first pipeline 3 to the second pipeline 11 mixes with the remaining working medium in the second pipeline 11, undergoes preliminary cooling, and then enters the radiator 13 for further cooling, which can achieve a better heat dissipation effect.
[0031] In some embodiments, the battery temperature regulating device 2 further includes a temperature regulating component 22. The third pipeline 21 includes a second portion 211 corresponding to the inlet of the temperature regulating component 22 and a first portion 212 corresponding to the outlet of the temperature regulating component 22. The first pipeline 3 includes a fifth connection and a sixth connection. The second valve group 6 includes a third valve 61 and a fourth valve 62. The first portion 212 is connected to the fifth connection, and the second portion 211 is connected to the sixth connection. The third valve 61 is disposed in the first portion 212, and the fourth valve 62 is disposed in the second portion 211. The temperature regulating component 22 has a heating or cooling function. The working medium in the third pipeline 21 enters the temperature regulating component 22 from the first portion 212 for temperature regulation, and then enters the first pipeline 3 through the second portion 211 to regulate the temperature of the battery 4. In this embodiment, the third pipeline 21 is a non-circulating pipeline. When the third pipeline 21 is disconnected from the first pipeline 3, the working medium in the third pipeline 21 is in a non-flowing state. In other embodiments, the third pipeline 21 can also be a circulating pipeline, with a three-way connection point set with reference to the second pipeline 11 to connect with the first pipeline 3. In this case, when the third pipeline 21 is disconnected from the first pipeline 3, the working medium in the third pipeline 21 can continue to circulate for heat preservation, reducing the heating time when it is needed next time.
[0032] In some embodiments, the third and fifth connections are the same connection on the first pipe 3, and the fourth and sixth connections are the same connection on the first pipe 3. That is, the fourth pipe 8 and the first portion 212 are connected to the same location on the first pipe 3, and the fifth pipe 7 and the second portion 211 are connected to the same location on the first pipe 3; these two locations are different locations on the first pipe 3. In some embodiments, the third and fifth connections are located at one of the inlet 31 and outlet 32 of the first pipe 3, and the fourth and sixth connections are located at the other of the inlet 31 and outlet 32 of the first pipe 3. In this embodiment, the third and fifth connections are located at the inlet 31 of the first pipe 3, and the fourth and sixth connections are located at the outlet 32 of the first pipe 3.
[0033] In some embodiments, the first valve group 5 and the second valve group 6 are disposed close to the first pipeline 3. In this embodiment, the first valve 51, the second valve 52, the third valve 61, and the fourth valve 62 are independent valves. In other embodiments, the first valve 51 and the third valve 61 can be integrated into one valve, in which case the first valve 51 and the third valve 61 are two inlet and outlet valves of that valve, and the second valve 52 and the fourth valve 62 can be integrated into one valve, in which case the second valve 52 and the fourth valve 62 are two inlet and outlet valves of that valve.
[0034] In some embodiments, the engine cooling device 1 further includes a first expansion tank 14, a first water supply pipe 15, a first exhaust pipe 16, and a first overflow pipe 17. The first expansion tank 14 is connected to a second pipeline 11 via the first water supply pipe 15. The first exhaust pipe 16 connects the second pipeline 11 to the first expansion tank 14. The first overflow pipe 17 connects the first expansion tank 14 to the outside. The battery temperature regulating device 2 further includes a second expansion tank 23, a second water supply pipe 24, a second exhaust pipe 25, and a second overflow pipe 26. The second expansion tank 23 is connected to a third pipeline 21 via the second water supply pipe 24. The second exhaust pipe 25 connects the third pipeline 21 to the second expansion tank 23. The second overflow pipe 26 connects the third expansion tank to the outside. The expansion tank is used to hold the working medium and replenishes the working medium to the corresponding pipelines via the water supply pipe. Gas or excess working medium in the expansion tank is discharged through the overflow pipe. Gas generated by the working medium in the pipelines is discharged through the corresponding exhaust pipes, thereby ensuring that the working medium in the pipelines can be transported normally.
[0035] One method of using the battery heating system of this application is as follows: In extremely low temperature environments, with the vehicle in ON position and the engine 12 started with the help of the cold start system, the engine 12 idles. The working medium in the engine cooling device 1 circulates through the second pipe 11. As the working medium flows through the engine 12, it cools the engine 12. The heated working medium then enters the radiator 13 through the second pipe 11 for further cooling, and continues to circulate to cool the engine 12. Next, the first valve 51 and the second valve 52 are opened, and the third valve 61 and the fourth valve 62 are closed, connecting the second pipe 11 with the first pipe 3. Part of the working medium in the second pipe 11 enters the first pipe 3, using the higher temperature working medium in the second pipe 11 to heat the battery 4, raising the ambient temperature of the battery 4 to a temperature range that allows the battery 4 to discharge normally. The working medium flowing out of the first pipe 3 returns to the second pipe 11, and the cycle continues. When the battery temperature reaches the required temperature, the first valve 51 and the second valve 52 are closed, and the third valve 61 and the fourth valve 62 are opened, connecting the third pipeline 21 to the first pipeline 3. At this time, after a preset delay, the temperature regulating component 22 of the battery temperature regulating device 2 starts to work, regulating the battery temperature based on preset cooling control logic and / or heating control logic. It can be seen that this application can utilize the waste heat of the engine 12 to bring the battery 4 to the required discharge temperature in extremely low-temperature environments, and can regulate the temperature of the battery 4 while it is working, giving the battery 4 better temperature adaptability.
[0036] This application also provides a hybrid power device, including the battery heating system applied to the hybrid power device as described above.
[0037] This application discloses a battery heating system for hybrid power equipment and the hybrid power equipment itself. The battery heating system includes an engine cooling device, a battery temperature regulating device, a first pipeline, a first valve group, and a second valve group. The engine cooling device includes a second pipeline for conveying a working medium for cooling the engine. The battery temperature regulating device includes a third pipeline for conveying a working medium for regulating the battery temperature. The first pipeline is located at the battery location and is used to convey the working medium. The second pipeline is connected to or disconnected from the first pipeline via the first valve group. The third pipeline is connected to or disconnected from the first pipeline via the second valve group. This technical solution can utilize engine waste heat for active battery heating and can also regulate battery temperature through the battery temperature regulating device, ensuring normal battery discharge and improving the vehicle's adaptability to ambient temperature.
[0038] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A battery heating system for use in hybrid power equipment, characterized in that, Includes an engine cooling system, a battery temperature regulation system, a first pipeline, a first valve group, and a second valve group; The engine cooling device includes a second pipe for conveying a working medium for cooling the engine; The battery temperature regulation device includes a third pipeline for conveying a working medium for regulating the battery temperature. The first conduit is located at the position of the battery and is used to transport the working medium; The second pipeline is connected to or disconnected from the first pipeline via the first valve group; The third pipeline is connected to or disconnected from the first pipeline via the second valve group.
2. The battery heating system according to claim 1, characterized in that, It also includes a controller, and the first valve group and the second valve group are respectively connected to the controller.
3. The battery heating system according to claim 2, characterized in that, The first valve group and the second valve group are solenoid valves.
4. The battery heating system according to any one of claims 1 to 3, characterized in that, The second pipeline includes a first connection point and a second connection point, the first pipeline includes a third connection point and a fourth connection point, the first connection point and the third connection point are connected through the fourth pipeline, and the second connection point and the fourth connection point are connected through the fifth pipeline; The first valve group includes a first valve and a second valve, with the first valve located in the fourth pipeline and the second valve located in the fifth pipeline.
5. The battery heating system according to claim 4, characterized in that, The engine cooling device also includes a radiator disposed in the second pipeline; One of the first connection and the second connection is near the inlet of the radiator, and the other of the first connection and the second connection is near the outlet of the radiator.
6. The battery heating system according to claim 4, characterized in that, The battery temperature regulating device further includes a temperature regulating component, and the third pipeline includes a second part corresponding to the inlet of the temperature regulating component and a first part corresponding to the outlet of the temperature regulating component; The first pipeline includes a fifth connection and a sixth connection, the second valve group includes a third valve and a fourth valve, the first part is connected to the fifth connection, the second part is connected to the sixth connection, the third valve is located in the first part, and the fourth valve is located in the second part.
7. The battery heating system according to claim 6, characterized in that, The third connection point and the fifth connection point are the same connection point on the first pipeline, and the fourth connection point and the sixth connection point are the same connection point on the first pipeline.
8. The battery heating system according to claim 7, characterized in that, The third connection and the fifth connection are located at one of the inlet and outlet of the first pipeline, and the fourth connection and the sixth connection are located at the other of the inlet and outlet of the first pipeline.
9. The battery heating system according to claim 6, characterized in that, The first valve group and the second valve group are located close to the first pipeline.
10. A hybrid power device, characterized in that, Includes a battery heating system for use in hybrid power equipment as described in any one of claims 1 to 9.