Power system, battery module power supply method, and vehicle

Abstract

The embodiment of the application discloses a power system, a battery module power supply method and a vehicle. The power system comprises a battery module, an electric module, a fuel module and a control module. The electric module is electrically connected with the battery module. The fuel module is electrically connected with the electric module and the battery module. The fuel module has a first power section and a second power section. When the fuel module is in the first power section, the battery module and the fuel module supply power to the electric module. When the fuel module is in the second power section, the fuel module supplies power to the electric module and the battery module. The control module is in communication connection with the battery module, the electric module and the fuel module. The power system can charge the battery module automatically.

Description

Technical Field

[0001] This application relates to the field of vehicle transmission technology, and in particular to a power system, a battery module power supply method, and a vehicle. Background Technology

[0002] The powertrain system refers to the collection of all components in a vehicle responsible for generating driving force and transmitting it to the wheels. For internal combustion engine vehicles, this mainly includes the generator, transmission system, and related auxiliary devices.

[0003] Currently, all loaders on the market are plug-in range-extended hybrid loaders. The batteries are mostly energy storage batteries with a charging rate of 1C. They usually need to be charged by an external power source, and the amount of electricity in the energy storage batteries is gradually consumed during the operation of the loader. Summary of the Invention

[0004] This application provides a power system, a battery module power supply method, and a vehicle, wherein the power system is capable of charging the battery module itself.

[0005] In a first aspect, embodiments of this application provide a power system including a battery module, an electric module, a fuel module, and a control module. The electric module is electrically connected to the battery module; the fuel module is electrically connected to the electric module and the battery module, and the fuel module has a first power segment and a second power segment. When the fuel module is in the first power segment, the battery module and the fuel module supply power to the electric module; when the fuel module is in the second power segment, the fuel module supplies power to the electric module and the battery module. The control module is communicatively connected to the battery module, the electric module, and the fuel module.

[0006] Based on the power system of this application embodiment, in the first power segment, the fuel module and the battery module simultaneously supply power to the electric module, enabling the electric module to drive the vehicle for high-load operation; in the second power segment, the fuel module supplies power to both the electric module and the battery module. At this time, the energy generated by the fuel module is supplied to the electric module and the battery module respectively, the electric module drives the vehicle for regular operation, and the battery module stores energy to replenish its charge. When the fuel module enters the first power segment again, the battery module releases the stored energy and supplies power to the electric module together with the fuel module. In this way, the power system can charge the battery itself without the need for an external power source to charge the battery.

[0007] In some embodiments of this application, the fuel module includes a generator and an internal combustion engine. The generator is electrically connected to the battery module, the electric module, and the control module. The internal combustion engine is electrically connected to the control module and is drively connected to the generator. The internal combustion engine has a first speed range and a second speed range. When the internal combustion engine is in the first speed range, the generator is in the first power range. When the internal combustion engine is in the second speed range, the generator is in the second power range.

[0008] Based on the above embodiments, the internal combustion engine drives the generator to rotate, converting the chemical energy of fuel into electrical energy. When the internal combustion engine is in the first speed range, it drives the generator to output energy in the first power range, and when the internal combustion engine is in the second speed range, it drives the generator to output energy in the second power range.

[0009] In some embodiments of this application, the electric module includes a walking motor and a loading motor. The walking motor is electrically connected to the battery module and the generator, and the walking motor is communicatively connected to the control module. The loading motor is electrically connected to the battery module and the generator, and the loading motor is communicatively connected to the control module.

[0010] Based on the above embodiments, the walking motor is used to drive the vehicle to walk, and the loading motor is used to drive the vehicle to perform loading operations. When the fuel module is in the first power range, the fuel module and the battery module supply power to the walking motor and the loading motor. When the fuel module is in the second power range, the fuel module supplies power to the battery module and the walking motor.

[0011] In some embodiments of this application, the battery module includes a high-voltage box and a high-rate power battery, and the high-voltage box is electrically connected to the walking motor, the loading motor, the generator and the control module.

[0012] Based on the above embodiments, the main function of the high-voltage box is to rationally distribute the high-voltage electrical energy generated by the battery to various high-voltage electrical devices; that is, when the high-rate power battery is discharging (when the fuel module is in the first power segment), the high-voltage box distributes the electrical energy released by the high-rate power battery to the walking motor and the loading motor.

[0013] Secondly, embodiments of this application provide a battery module power supply method applied to a power system, the power system including a control module, a fuel module, an electric module, and a battery, the method including:

[0014] The control module acquires the vehicle's operating status;

[0015] When the operating state is in the first operating state, the fuel module and battery are identified as power supply devices, and the power control signal of the fuel module is determined; the output power of the fuel module is controlled to supply power to the target device, and the battery is controlled to supply power to the target device; the target device includes an electric module;

[0016] When the operating state is in the second operating state, the fuel module is determined to be a power supply device, and the power control signal of the fuel module is determined to control the output power of the fuel module to supply power to the target device; the target device includes an electric module and a battery.

[0017] Based on the power supply method of this application embodiment, the control module acquires the vehicle's operating state. The control module determines the power supply equipment, power control signal, and target device based on the vehicle's operating state. In the first operating state of the vehicle, the fuel module and battery module are determined as the power supply equipment, and the target device is the electric module. The control module controls the output power of the fuel module to supply power to the electric module, and controls the battery module to supply power to the electric module. In the second operating state, the fuel module is determined as the power supply equipment, the target devices are the electric module and battery module, the power control signal of the fuel module is determined, and the fuel module output power is controlled to supply power to the electric module and battery module, thereby enabling the power system to self-charge the electric module.

[0018] In some embodiments of this application, the fuel module includes a transmission-connected internal combustion engine and a generator, and determining the power control signal of the fuel module includes:

[0019] The internal combustion engine responds to the power control signal and rotates based on a target speed; wherein the power control signal includes the target speed;

[0020] The generator determines the output energy based on the target rotational speed.

[0021] Based on the above embodiments, the internal combustion engine responds to the power control signal and rotates based on the target speed. The rotating internal combustion engine drives the generator to rotate, so that the generator outputs electrical energy within the corresponding power range.

[0022] In some embodiments of this application, when the operating state is in the second operating state, the generator determines the target power supply to the electric module and the battery module according to a preset allocation ratio and the output energy.

[0023] Based on the above embodiments, the energy generated by the generator needs to be prioritized to meet the needs of the loader, that is, the energy generated by the generator is first supplied to the travel motor, and the remaining energy is supplied to the battery module.

[0024] In some embodiments of this application, the electric module includes a walking motor and a loading motor. When the working state is in a first working state, the target device is the loading motor; when the working state is in a second working state, the target device is the walking motor and the high-rate power battery.

[0025] Based on the above embodiments, in the first working state, only the loading motor consumes electrical energy among the walking motor and the loading motor; in the second working state, only the walking motor consumes electrical energy among the walking motor and the loading motor.

[0026] In some embodiments of this application, the charge capacity of the battery module is x, where 0.3 ≤ x ≤ 0.5.

[0027] Based on the above embodiments, the battery module's charge capacity is less than 0.5, ensuring that the battery will not be overcharged, and also ensuring that the power generated by the fuel module in the second working state can be preferentially supplied to the walking motor; the battery module's charge capacity is greater than or equal to 0.3, ensuring that the battery module has sufficient power to supply the loading motor in the first working state.

[0028] Thirdly, embodiments of this application provide a vehicle that includes the power system as described above; or, performs the steps of the battery module power supply method as described above.

[0029] Based on the vehicle in this application embodiment, since it has the above-mentioned power system, the power system can achieve self-charging, so the vehicle can achieve self-charging without the need to use external charging equipment for charging; or, the vehicle can achieve self-charging of the battery module by executing the above-mentioned power supply method. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the connection structure of the power system in one embodiment of this application;

[0032] Figure 2 This is a flowchart illustrating a battery module power supply method in one embodiment of this application.

[0033] Reference numerals: 10, Battery module; 11, High voltage box; 12, High-rate power battery; 20, Electric module; 21, Walking motor; 22, Loading motor; 30, Fuel module; 31, Generator; 32, Internal combustion engine; 40, Control module. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0035] The powertrain system refers to the collection of all components in a vehicle responsible for generating driving force and transmitting it to the wheels. For internal combustion engine vehicles, this mainly includes the generator, transmission system, and related auxiliary devices.

[0036] Currently, all loaders on the market are plug-in range-extended hybrid loaders. The batteries are mostly energy storage batteries with a charging rate of 1C. They usually need to be charged by an external power source, and the amount of electricity in the energy storage batteries is gradually consumed during the operation of the loader.

[0037] This application provides a power system, a battery module power supply method, and a vehicle, wherein the power system is capable of charging the battery module 10 on its own.

[0038] Firstly, please refer to Figure 1 As shown in the figure, this application provides a power system, which includes a battery module 10, an electric module 20, a fuel module 30, and a control module 40. The electric module 20 is electrically connected to the battery module 10; the fuel module 30 is electrically connected to the electric module 20 and the battery module 10. The fuel module 30 has a first power segment and a second power segment. When the fuel module 30 is in the first power segment, the battery module 10 and the fuel module 30 supply power to the electric module 20. When the fuel module 30 is in the second power segment, the fuel module 30 supplies power to the electric module 20 and the battery module 10. The control module 40 is communicatively connected to the battery module 10, the electric module 20, and the fuel module 30.

[0039] Based on the power system of this application embodiment, in the first power range, the fuel module 30 and the battery module 10 simultaneously supply power to the electric module 20, enabling the electric module 20 to drive the vehicle for high-load operation. In the second power range, the fuel module 30 supplies power to both the electric module 20 and the battery module 10. At this time, the energy generated by the fuel module 30 is supplied to the electric module 20 and the battery module 10 respectively. The electric module 20 drives the vehicle for regular operation, while the battery module 10 stores energy to replenish its charge. When the fuel module 30 enters the first power range again, the battery module 10 releases the stored energy and supplies power to the electric module 20 together with the fuel module 30. In this way, the power system can charge the battery itself without the need for an external power source.

[0040] Please refer to Figure 1As shown, the fuel module 30 includes a generator 31 and an internal combustion engine 32. The generator 31 is electrically connected to the battery module 10, the electric module 20, and the control module 40. The internal combustion engine 32 is electrically connected to the control module 40 and is drivenly connected to the generator 31. The internal combustion engine 32 has a first speed range and a second speed range. When the internal combustion engine 32 is in the first speed range, the generator 31 is in the first power range. When the internal combustion engine 32 is in the second speed range, the generator 31 is in the second power range.

[0041] The internal combustion engine 32 drives the generator 31 to rotate, converting the chemical energy of fuel into electrical energy. When the internal combustion engine 32 is in the first speed range, it drives the generator 31 to output energy in the first power range. When the internal combustion engine 32 is in the second speed range, it drives the generator 31 to output energy in the second power range. That is, this application controls the electrical energy output by the generator 31 by controlling the speed of the internal combustion engine 32.

[0042] An internal combustion engine 32 is a type of power machinery that is a heat generator 31 that directly converts the heat energy released by burning fuel inside the machine into power. In the embodiments of this application, the internal combustion engine 32 can be a diesel engine or a gasoline engine. A diesel engine generates power by burning diesel fuel, while a gasoline engine generates power by burning gasoline.

[0043] Generator 31 refers to a mechanical device that converts mechanical energy into electrical energy. Generator 31 is driven by power machinery and converts the energy generated by water flow, air flow, fuel combustion or nuclear fission into mechanical energy, which is then transferred to generator 31 and converted into electrical energy. The working principle of generator 31 is based on the laws of electromagnetic induction and electromagnetic force to achieve the purpose of energy conversion.

[0044] Please refer to Figure 1 As shown, in some embodiments of this application, the electric module 20 includes a walking motor 21 and a loading motor 22. The walking motor 21 is electrically connected to the battery module 10 and the generator 31, and is communicatively connected to the control module 40. The loading motor 22 is electrically connected to the battery module 10 and the generator 31, and is communicatively connected to the control module 40.

[0045] The walking motor 21 is used to drive the vehicle to move, and the loading motor 22 is used to drive the vehicle to perform loading operations. When the fuel module 30 is in the first power range, the fuel module 30 and the battery module 10 supply power to the walking motor 21 and the loading motor 22. When the fuel module 30 is in the second power range, the fuel module 30 supplies power to the battery module 10 and the walking motor 21.

[0046] In some embodiments of this application, the battery module 10 includes a high-voltage box 11 and a high-rate power battery 12. The high-voltage box 11 is electrically connected to the walking motor 21, the loading motor 22, the generator 31, and the control module 40.

[0047] The main function of the high-voltage box 11, or high-voltage distribution box, is to rationally distribute the high-voltage electrical energy generated by the battery to various high-voltage electrical devices, including the walking motor 21 and the loading motor 22 in this application. It also has the function of overload and short-circuit protection for the high-voltage circuit, similar to a fuse box in a low-voltage power supply system. Specifically, in this embodiment, when the high-rate power battery 12 is discharging (when the fuel module 30 is in the first power range), the high-voltage box 11 distributes the electrical energy released by the high-rate power battery 12 to the walking motor 21 and the loading motor 22.

[0048] The most significant difference between the high-rate power battery 12 and ordinary batteries lies in their power output capability. The high-rate power battery 12 boasts a higher discharge rate, enabling it to output a larger current in a short time, meeting the demands of high-power equipment. Ordinary batteries, on the other hand, have a relatively lower discharge rate and are suitable for equipment with lower power requirements. Therefore, the high-rate power battery 12 can quickly and conveniently meet the high power consumption needs of loaders during short-term loading operations.

[0049] It is understood that in some embodiments of this application, the fuel module 30 may also have other power segments, such as a third power segment. When the fuel module 30 is in the third power segment, the fuel module 30 supplies power to the walking motor 21 so that the vehicle is in an unloaded transfer state.

[0050] In some embodiments of this application, the control module 40 includes a vehicle controller, a hybrid generator controller, an internal combustion engine controller, a generator controller, a battery controller, and a motor controller. The vehicle controller is a master controller. The vehicle controller is communicatively connected to the hybrid generator controller, the battery controller, and the motor controller. The motor controller is connected to the drive motor 21 and the load motor 22. The battery controller is connected to the high-voltage box 11 and the high-rate power battery 12. The hybrid generator controller is communicatively connected to the internal combustion engine controller and the generator controller. The internal combustion engine controller is electrically connected to the internal combustion engine 32, and the generator controller is electrically connected to the generator 31.

[0051] Secondly, this application embodiment also provides a vehicle, which includes the power system described above. The vehicle in this application embodiment can be any type of hybrid vehicle, such as a commercial hybrid heavy truck, a household hybrid vehicle, a hybrid wide-body vehicle, etc.

[0052] The vehicle based on the embodiments of this application has the above-described power system, which enables the power system to self-charge, so the vehicle can self-charge without the need for external charging equipment to replenish power.

[0053] The vehicle in this application embodiment can be a loader. Based on the working characteristics of the loader, the working state of the loading component is divided into the following three types: empty transfer without loading material, shovel loading with material, and load transfer with loaded material.

[0054] When this power system is applied to a loader, during the loader's loading operation, only the loading motor 22 works among the loading motor 22 and the travel motor 21. The loading motor 22 requires a large amount of energy to load the load. When the power system is in the first power range, the fuel module 30 and the battery module 10 can provide a large amount of energy to the travel motor 21 and the loading motor 22. Since the travel motor 21 is not working, the large amount of energy provided by the fuel module 30 and the battery module 10 is fully supplied to the loading motor 22 to ensure that the loader completes the loading operation.

[0055] When this power system is applied to a loader, during load transfer, only the travel motor 21 works among the loader motor 22 and the travel motor 21. When the power system is in the first power range, the fuel module 30 provides energy to the battery module 10, the travel motor 21 and the loader motor 22. Since the loader motor 22 is not working, the energy generated by the fuel module 30 is distributed to the battery module 10 and the travel motor 21, so that the loader can charge the battery module 10 while completing the load transfer operation.

[0056] When this power system is applied to a loader, during unloaded transfers, only the travel motor 21 operates out of the loader motor 22 and the travel motor 21. The energy consumed by the travel motor 21 is lower than the energy required by the loader during loaded transfers. When the power system is in the third power range, the fuel module 30 provides energy to the battery module 10, the travel motor 21, and the loader motor 22. Since the loader motor 22 is not operating, the energy generated by the fuel module 30 is distributed to the battery module 10 and the travel motor 21. However, since the loader has already charged the battery module 10 during load transfer, the energy generated by the fuel module 30 can be supplied only to the travel motor 21. If the battery module 10's charge level does not reach the set charge level during load transfer, the energy generated by the fuel module 30 is distributed to the battery module 10 and the travel motor 21.

[0057] Thirdly, embodiments of this application provide a power supply method for a battery module 10, applied to a power system. The power system includes a control module 40, a fuel module 30, an electric module 20, and a battery. The method includes:

[0058] S100, control module 40 obtains the vehicle's working status.

[0059] S200: When the working state is in the first working state, the fuel module 30 and the battery module 10 are determined as power supply devices, and the power control signal of the fuel module 30 is determined; the output power of the fuel module 30 is controlled to supply power to the target device, and the battery module 10 is controlled to supply power to the target device; the target device includes the electric module 20.

[0060] S300: When the working state is in the second working state, the fuel module 30 is determined as the power supply device, and the power control signal of the fuel module 30 is determined to control the output power of the fuel module 30 to supply power to the target device; the target device includes the electric module 20 and the battery module 10.

[0061] As can be seen from the above, after the vehicle is configured as a loader in this application embodiment, the working state of the loader includes empty transfer, shoveling, and load transfer; in this application embodiment, the first working state is shoveling, and the second working state is load transfer.

[0062] Based on the power supply method of this application embodiment, the control module 40 acquires the vehicle's operating state. The control module 40 determines the power supply equipment, power control signal, and target equipment according to the vehicle's operating state. In the first operating state of the vehicle, the fuel module 30 and battery module 10 are determined as power supply equipment, and the target equipment is the electric module 20. The control module 40 controls the output power of the fuel module 30 to supply power to the electric module 20, and controls the battery module 10 to supply power to the electric module 20. In the second operating state, the fuel module 30 is determined as power supply equipment, the target equipment is determined as the electric module 20 and battery module 10, the power control signal of the fuel module 30 is determined, and the control module 30 controls the output power of the fuel module 30 to supply power to the electric module 20 and battery module 10, thereby realizing the self-charging of the electric module 20 by the power system.

[0063] In conjunction with the loader's ability to transfer to a new location without load, in some embodiments of this application, when the working state is in the third working state, the fuel module 30 is determined to be a power supply device, and the power control signal of the fuel module 30 is determined to control the output power of the fuel module 30 to supply power to the target device; the target device includes the electric module 20.

[0064] In some embodiments of this application, the fuel module 30 includes an internal combustion engine 32 and a generator 31 connected by a transmission. Determining the power control signal of the fuel module 30 includes: the internal combustion engine 32 rotating based on a target speed in response to the power control signal; wherein the power control signal includes the target speed; and the generator 31 determining the output energy based on the target speed.

[0065] In this embodiment, the control module 40 determines the target speed of the internal combustion engine 32 according to the working state of the vehicle. The internal combustion engine 32 rotates according to the target speed, thereby causing the generator 31 to be in the corresponding power range.

[0066] In some embodiments of this application, when the working state is in the second working state, the generator 31 determines the target power supply to the electric module 20 and the battery module 10 according to a preset allocation ratio and output energy. It can be understood that the energy generated by the generator 31 needs to prioritize the operation of the loader, that is, the energy generated by the generator 31 is first supplied to the travel motor 21, and the remaining energy is supplied to the battery module 10.

[0067] In some embodiments of this application, the electric module 20 includes a walking motor 21 and a loading motor 22. When the working state is in the first working state, the target device is the loading motor 22; when the working state is in the second working state, the target device is the walking motor 21 and the high-rate power battery 12.

[0068] In some embodiments of this application, the charge capacity of the battery module 10 is x, where 0.3 ≤ x ≤ 0.5.

[0069] Based on the above embodiments, the charge of the battery module 10 is less than 0.5, which ensures that the battery will not be overcharged, and also ensures that the power generated by the fuel module 30 in the second working state can be preferentially supplied to the walking motor 21; the charge of the battery module 10 is greater than or equal to 0.3, which ensures that the battery module 10 has sufficient power to supply the loading motor 22 in the first working state.

[0070] Fourthly, embodiments of this application provide a vehicle that performs the steps of the above-described battery module 10 power supply method.

[0071] Based on the vehicle in this embodiment, the vehicle can achieve self-charging of the battery module 10 by performing the above-described power supply method.

[0072] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0073] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A power system, characterized in that, include: Battery module; An electric module, which is electrically connected to the battery module; A fuel module, electrically connected to the electric module and the battery module, the fuel module having a first power segment and a second power segment, wherein when the fuel module is in the first power segment, the battery module and the fuel module supply power to the electric module; and when the fuel module is in the second power segment, the fuel module supplies power to the electric module and the battery module; and, The control module is communicatively connected to the battery module, the electric module, and the fuel module.

2. The power system as described in claim 1, characterized in that, The fuel module includes: A generator, which is electrically connected to the battery module, the electric module, and the control module; and, An internal combustion engine is electrically connected to the control module and is drive-connected to the generator. The internal combustion engine has a first speed range and a second speed range. When the internal combustion engine is in the first speed range, the generator is in the first power range. When the internal combustion engine is in the second speed range, the generator is in the second power range.

3. The power system as described in claim 2, characterized in that, The electric module includes: A walking motor, electrically connected to the battery module and the generator, and communicatively connected to the control module; and... The loading motor is electrically connected to the battery module and the generator, and is communicatively connected to the control module.

4. The power system as described in claim 3, characterized in that, The battery module includes a high-voltage box and a high-rate power battery. The high-voltage box is electrically connected to the walking motor, the loading motor, the generator, and the control module.

5. A battery module power supply method, characterized in that, Applied to a power system, the power system including a control module, a fuel module, an electric module, and a battery module, the method includes: The control module acquires the vehicle's operating status; When the operating state is in the first operating state, the fuel module and battery module are determined as power supply devices, and the power control signal of the fuel module is determined; the fuel module outputs power to supply power to the target device, and the battery module supplies power to the target device; the target device includes an electric module; When the operating state is in the second operating state, the fuel module is determined to be a power supply device, and the power control signal of the fuel module is determined to control the output power of the fuel module to supply power to the target device; the target device includes an electric module and a battery module.

6. The battery module power supply method as described in claim 5, characterized in that, The fuel module includes a transmission-connected internal combustion engine and a generator, and the power control signal for determining the fuel module includes: The internal combustion engine responds to the power control signal and rotates based on a target speed; wherein the power control signal includes the target speed; The generator determines the output energy based on the target rotational speed.

7. The battery module power supply method as described in claim 6, characterized in that, When the operating state is in the second operating state, the generator determines the target power supply to the electric module and the battery module according to the preset allocation ratio and the output energy.

8. The battery module power supply method as described in claim 5, characterized in that, The electric module includes a walking motor and a loading motor. In the first working state, the target device is the loading motor; in the second working state, the target device is the walking motor and the battery.

9. The battery module power supply method as described in claim 5, characterized in that, The battery module has a charge capacity of x, where 0.3 ≤ x ≤ 0.

5.

10. A vehicle, characterized in that, include: The power system as described in any one of claims 1-4; or, Perform the steps of the battery module power supply method as described in any one of claims 5-9.

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