A hybrid power generation system and a hybrid vehicle

Abstract

An embodiment of the present invention discloses a hybrid power generation system, including an energy storage device and a phase-changing electric device, wherein the phase-changing electric device includes a phase-changing motor and a phase-changing rectifier matrix electrically connected to the phase-changing motor, wherein the phase-changing rectifier matrix enables the phase-changing motor to output a constant-voltage direct current source of different powers at different speeds, and the constant-voltage direct current source is connected in parallel with the energy storage device; furthermore, a plurality of phase coils are arranged in the phase-changing motor, and each phase coil is externally connected to a rectifier.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle hybrid power generation systems, and in particular to a hybrid power generation system and a hybrid vehicle. Background Art

[0002] The hybrid power generation system of a vehicle refers to a vehicle equipped with two or more power sources. The energy recovery device of the hybrid vehicle will convert the excess kinetic energy or the output of the engine into electrical energy and store it in the battery during processes such as braking and high-speed cruising. Then this electrical energy will replace the engine to provide power for the vehicle at low speeds, or cooperate with the engine to output greater power when a quick start is required. Hybrid vehicles have a good application prospect internationally. First of all, they do not need to rely on large-scale basic charging facilities, nor do they need to wait for a long time to charge.

[0003] However, most of the existing hybrid power modes use the "burning resistor" method for electric braking, and some use the driver for reverse feedback, which requires a complex DCDC module. This traditional method has the following defects: on the one hand, it causes high costs and the overall energy storage safety and reliability is not strong; on the other hand, when the vehicle is driving at high speed and partially brakes, the motor speed (high speed, medium speed and low speed) changes very quickly, the feedback is very intermittent, and the control difficulty is extremely high, resulting in a low energy recovery rate (it is reported that the current highest level in the industry is to recover about 15% of the energy of car deceleration), which is not conducive to improving the vehicle's endurance and saving costs. Summary of the invention

[0004] To this end, an embodiment of the present invention provides a hybrid power generation system to solve the problem in the prior art that it is not conducive to improving the endurance of the vehicle and is not conducive to cost saving.

[0005] In order to achieve the above-mentioned purpose, an embodiment of the present invention provides a hybrid power generation system on the one hand, including an energy storage device and a phase-changing electric device, wherein the phase-changing electric device includes a phase-changing motor and a phase-changing rectifier matrix electrically connected to the phase-changing motor, wherein the phase-changing rectifier matrix enables the phase-changing motor to output a constant-voltage DC source of different powers at different speeds, and the constant-voltage DC source is connected in parallel with the energy storage device.

[0006] In another embodiment of the present invention, a plurality of phase coils are arranged in the variable phase motor, and each of the phase coils is externally connected to a rectifier.

[0007] In another embodiment of the present invention, the DC power output by each rectifier is used as an independent DC power supply, and the DC power supplies are arranged to form a DC power supply group. The phase-changing rectifier matrix includes the DC power supply group and an array controller.

[0008] In another embodiment of the present invention, under different rotation speeds, the array controller controls the connection mode of each of the DC power supplies to obtain the output power at different rotation speeds.

[0009] In yet another embodiment of the present invention, the DC power supplies are connected in series in sequence.

[0010] In yet another embodiment of the present invention, the DC power supplies are connected in series or parallel combination.

[0011] In yet another embodiment of the present invention, the energy storage device comprises a plurality of battery packs, and the plurality of battery packs are connected in parallel.

[0012] In yet another embodiment of the present invention, the battery pack includes a plurality of batteries.

[0013] Another aspect of the embodiments of the present invention provides a hybrid vehicle, which includes the hybrid power generation system described above.

[0014] According to the implementation of the present invention, the following advantages are achieved:

[0015] The present invention realizes dual-source drive of the vehicle with two-way compensation under the support of "DC joint storage" by connecting the phase-changing electric device and the energy storage device in parallel, thereby achieving a full-electric drive output mode of a dynamically balanced energy balance body. The constant voltage output by the phase-changing electric device is always linked with the energy storage device, and has a strong dynamic balancing ability. Combined with the peak and trough absorption ability, a dynamically balanced hybrid power mode is realized, thereby improving the vehicle's endurance and saving costs.

[0016] Furthermore, compared with the traditional hybrid power mode, the phase-changing rectifier matrix of the present invention replaces the complex rectifier module, greatly saving costs and improving the safety and reliability of energy storage.

[0017] In addition, under the control of the phase-changing rectifier matrix of the present invention, the phase-changing motor can output constant voltage power of different powers at different rotational speeds. Especially when the vehicle is driving at high speed and is partially braked, the phase-changing rectifier matrix can quickly recover the energy of vehicle deceleration at low speed, greatly reducing the loss of the mechanical braking system, saving the vehicle's operating cost, and improving the vehicle's endurance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0020] Figure 1 A schematic diagram of the architecture of a hybrid power generation system provided by an embodiment of the present invention;

[0021] Figure 2 A schematic structural diagram of a phase-changing motor provided by another embodiment of the present invention;

[0022] Figure 3 A schematic structural diagram of a rectifier provided in another embodiment of the present invention;

[0023] Figure 4 A schematic diagram of a structure in which DC power supplies are connected in series according to another embodiment of the present invention;

[0024] Figure 5 A schematic diagram of a structure in which DC power supplies are connected in series and in parallel according to another embodiment of the present invention;

[0025] Figure 6 A schematic diagram of a structure in which DC power supplies are connected in series and in parallel according to another embodiment of the present invention.

[0026] In the figure:

[0027] 1. Energy storage device; 10. Battery pack; 101. Battery; 2. Phase-changing electric device; 20. Phase-changing rectifier matrix; 21. Phase-changing motor; 210. Phase coil; 23. DC power supply group; 231. Rectifier; 232. DC power supply; 24. Array controller. DETAILED DESCRIPTION

[0028] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that unless a direction is defined separately, the directions such as up, down, left, right, horizontal, and vertical in this document are all based on the embodiments of this application. Figure 1The directions of up, down, left, right, horizontal, and vertical shown in the figure shall prevail. If the specific posture changes, the directional indication will also change accordingly. "Multiple" and "several" mean two or more. It is explained here that the use of "first", "second", "third", "fourth" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components. In addition, in various embodiments of the present disclosure, the same or similar reference numerals represent the same or similar components.

[0030] In the present invention, unless otherwise clearly defined and specified, the terms "connection", "fixation" and the like should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] Embodiment 1

[0033] like Figure 1 As shown, this embodiment provides a hybrid power generation system, which includes an energy storage device 1 and a phase-changing electric device 2, wherein the phase-changing electric device 2 includes a phase-changing motor 21 and a phase-changing rectifier matrix 20, wherein the phase-changing motor 21 is electrically connected to the phase-changing rectifier matrix 20, so that the phase-changing motor 21 outputs a constant-voltage DC source of different powers at different speeds, and the constant-voltage DC source is connected in parallel with the energy storage device.

[0034] like Figure 2 As shown in the figure, as a specific implementation, the phase-changing motor in this embodiment includes a rotor, a stator, and a plurality of phase coils 210, wherein each phase coil 210 is connected to a rectifier 231, and the AC induced current is rectified by the rectifier 231 to convert the AC induced current into a DC power supply 232. In addition, the phase-changing motor 21 in this embodiment also includes a low-frequency drive circuit, a driver main power circuit, and a switching switch (not shown). Figure 3 As shown, the rectifier in this embodiment includes diodes T1, T2, T3, and T4. It should be noted that Figure 4-6 The DC power supply 232 shown is a representative symbol of the output power of the rectifier 231 .

[0035] Furthermore, the DC power output by each rectifier 231 in this embodiment is used as an independent DC power supply 232, and the DC power supplies are arranged to form a DC power supply group 23. Furthermore, the phase-changing rectifier matrix 20 includes a DC power supply group 23 and an array controller 24. Under different rotation speeds, the array controller controls the connection mode of each DC power supply to obtain the output power under different rotation speeds.

[0036] By using the technical solution of this embodiment, the present invention realizes a two-way compensation dual-source drive of the vehicle under the support of "DC joint storage" by connecting the phase-changing electric device in parallel with the energy storage device, and achieves a fully electric drive output mode of a dynamically balanced energy balance body. The constant voltage output by the phase-changing electric device is always linked with the energy storage device, and has a strong dynamic balancing ability, so as to realize a dynamically balanced hybrid power mode, thereby improving the vehicle's endurance and saving costs. Furthermore, compared with the traditional hybrid power mode, the phase-changing rectifier matrix of the present invention replaces the complex rectifier module, greatly saving costs and improving the safety and reliability of energy storage. In addition, under the control of the phase-changing rectifier matrix of the present invention, the phase-changing motor outputs a constant voltage power supply of different powers at different speeds, especially when the vehicle is driving at high speed to local braking, the phase-changing rectifier matrix can quickly recover the energy of the vehicle deceleration at low speed, greatly reducing the loss of the mechanical brake system, saving the cost of the vehicle, and improving the vehicle's endurance.

[0037] Embodiment 2

[0038] like Figures 4 to 6 As shown, this embodiment is based on the first embodiment, and further elaborates on the rectifier array constructed by the DC power supply in the phase-changing rectifier matrix. The phase-changing motor in this embodiment takes an 8-pole 4-phase dipole motor as an example, wherein each phase coil is connected to a rectifier, and the DC power output by each rectifier 231 is used as an independent DC power supply, which is combined in series and parallel through the array controller to obtain a constant voltage DC source at different speeds.

[0039] Specifically, Figure 4 As shown in the figure, when the vehicle speed is low, the array controller connects each DC power source in series, that is, connects each phase coil in series after rectification, to obtain the DC high voltage required for energy storage. For example: if the generator phase coil voltage is around 100 volts, 8 phase coils are rectified and connected in series to obtain a DC voltage of 800 volts, which can cope with the energy storage DC joint storage system.

[0040] Furthermore, if Figure 5As shown in the figure, when the vehicle speed is moderate, the required DC voltage can be obtained by changing the phase of 4 series and 2 parallel. For example, when the phase voltage is 200 volts, the DC voltage of the four series is still 800 volts, and the two channels can be connected in parallel to obtain double the power. It is also effective to realize DC joint storage.

[0041] In addition, if Figure 6 As shown, when the vehicle enters the high-speed stage, the motor speed is very high and the phase voltage may reach 400 volts. At this time, the array is changed again, and the output DC power is 4 times through the 2-series and 4-parallel phase changes.

[0042] The biggest advantage of the "disguised rectifier matrix" lies in "physical isolation". Compared with traditional expensive DC / DC modules, the cost is less than 20%, the reliability is improved by an order of magnitude, and especially the safety of energy storage is greatly improved.

[0043] Most traditional electric vehicle feedback systems use the "burning resistor" method for electric braking, and some use the driver for reverse feedback, which requires a complex DCDC module. Since the vehicle is driving at high speed until partial braking, the speed of the motor changes very quickly, the feedback is very intermittent, and the control is extremely difficult. For "feedback speed control", the current highest level in the industry is to recover about 15% of the energy from car deceleration. Compared with traditional methods, the feedback energy efficiency generated by this solution is as high as 85%, and 80% of the energy consumed by acceleration can be recovered through "feedback speed control", which is of great significance to improving the endurance of electric vehicles. At the same time, in actual use, it greatly reduces the loss of the mechanical brake system and saves the cost of vehicle use.

[0044] Embodiment 3

[0045] This embodiment is based on the first and second embodiments, as a preferred implementation mode, combined with the following Figure 1 As shown, the energy storage device 1 in this embodiment includes a plurality of battery packs 10, and the plurality of battery packs are connected in parallel. Further, the battery pack 10 includes a plurality of batteries 101 connected in series in sequence.

[0046] Embodiment 4

[0047] Another aspect of this embodiment provides a hybrid vehicle, which includes the hybrid power generation system of the first, second and third embodiments.

[0048] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A hybrid power generation system, characterized in that: It includes an energy storage device and a phase-changing electric device, wherein the phase-changing electric device includes a phase-changing motor and a phase-changing rectifier matrix electrically connected to the phase-changing motor, wherein the phase-changing rectifier matrix enables the phase-changing motor to output a constant-voltage DC source of different powers at different speeds, and the constant-voltage DC source is connected in parallel with the energy storage device; The phase-changing rectifier matrix includes a DC power supply group and an array controller. A plurality of phase coils are arranged in the phase-changing motor. Each phase coil is externally connected to a rectifier. The DC power output by each rectifier serves as an independent DC power supply. Each independent DC power supply forms the DC power supply group. Under different speeds, the array controller controls the connection mode of each DC power supply to obtain the output power at different speeds. When the vehicle is in a low-speed stage, the array controller controls each DC power supply to be connected in series in sequence. When the vehicle is in a medium-speed or high-speed stage, the array controller controls each DC power supply to be connected in series and parallel.

2. The hybrid power generation system according to claim 1, characterized in that: The energy storage device comprises a plurality of battery packs, and the plurality of battery packs are connected in parallel.

3. The hybrid power generation system according to claim 2, characterized in that: The battery pack includes a plurality of batteries.

4. A hybrid vehicle, characterized in that: A hybrid power generation system comprising any one of claims 1 to 3.

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