Voltage transformation type permanent magnet generator and voltage transformation type permanent magnet power generation device

Abstract

The utility model discloses a voltage transformation type permanent magnet generator and a voltage transformation type permanent magnet power generation device. The voltage transformation type permanent magnet generator comprises a transmission module, a first winding, a second winding, a contactor and a voltage detection module, the first winding and the second winding are connected in series through the contactor, and when an automobile runs, the voltage detection module detects the voltage value of the output end of the generator, and when the voltage value is higher than a preset value, the generator is started. The contactor cuts off the first winding or the second winding to reduce the working number of the windings, thereby achieving the purpose of controlling the voltage of the output end, guaranteeing the stability of the voltage of the output end, reducing the size of the inverter, and improving the performance of an automobile.

Description

Technical Field

[0001] The utility model relates to the technical field of production and manufacturing of generator sets, in particular to a transformer-type permanent magnet generator and a transformer-type permanent magnet power generation device. Background Art

[0002] With the continuous development of automobile technology, such as the iterative upgrades of traditional oil vehicles and the popularization of new energy vehicles, people's requirements for their performance are getting higher and higher.

[0003] While a car is in motion, it has an internal self-generating system that recycles or uses electricity. However, the car's speed constantly changes, rather than remaining constant. This speed range varies widely, while the number of pole pairs within the generator inside the car is fixed. As the speed increases, the current or voltage output by the generator also increases at different speeds. This results in an unstable or excessively wide output voltage range, making the output voltage unable to meet usage requirements. This results in an overly large inverter, which in turn reduces the performance of the vehicle's computer.

[0004] In summary, the generator provided in the prior art has an excessively large adjustment range of the voltage output by the generator, which in turn causes the inverter to be excessively large, and is not conducive to further improving the performance of the vehicle. Utility Model Content

[0005] The purpose of this utility model is to overcome the above technical deficiencies and propose a transformer-type permanent magnet generator and a transformer-type permanent magnet generator device to solve the technical problems in the prior art that the output voltage variation range of the generator inside the car is too large and the corresponding inverter is large in size.

[0006] In order to achieve the above technical purpose, the present invention adopts the following technical solutions:

[0007] In a first aspect, the present invention provides a transformer-type permanent magnet generator having an input end and an output end, characterized in that it includes:

[0008] case;

[0009] a transmission module passing through the housing and connected to the input end;

[0010] The first winding and the second winding are transmission-connected to the transmission module and electrically connected to the output end;

[0011] a contactor, disposed on the outer side of the side wall of the housing, wherein the first winding and the second winding are connected in series through the contactor; and

[0012] A voltage detection module is provided on one side of the contactor and is electrically connected to the output end;

[0013] When the voltage detection module detects that the output terminal voltage is higher than a predetermined value, the contactor is used to cut off the first winding or the second winding.

[0014] According to an embodiment of the present invention, the first winding and the second winding have the same number of turns.

[0015] According to an embodiment of the present invention, the first winding and the second winding each include a U-phase winding, a V-phase winding, and a W-phase winding.

[0016] According to an embodiment of the present invention, the windings of different phases in the first winding are arranged at equal intervals, and the windings of different phases in the second winding are arranged at equal intervals.

[0017] According to an embodiment of the present invention, the contactor includes an AC contactor, one end of the AC contactor is electrically connected to the first winding, and the other end of the AC contactor is electrically connected to the second winding.

[0018] According to an embodiment of the present invention, the contactor includes a plurality of switches, and the switches are electrically connected to the first winding and the second winding respectively.

[0019] According to an embodiment of the present invention, the voltage detection module further includes a control switch electrically connected to the contactor. When the output terminal voltage is higher than the predetermined value, the control switch is closed and the contactor is energized.

[0020] According to an embodiment of the present invention, the transformer-type permanent magnet generator further includes an inverter, and an output end of the inverter is electrically connected to the voltage detection module.

[0021] According to one embodiment of the present utility model, the inverter includes a U-phase output line, a V-phase output line, a W-phase output line and an N-phase output line, one end of the control switch is electrically connected to the N-phase output line, the other end of the control switch is electrically connected to one end of the contactor, and the other end of the contactor is electrically connected to the U-phase output line.

[0022] In a second aspect, the present invention further provides a transformer-type permanent magnet power generation device, comprising a transmission motor and a transformer-type permanent magnet generator as described in any one of the embodiments of the first aspect and connected to the transmission motor.

[0023] Compared with the prior art, the technical solution provided by the present invention has the following beneficial technical effects:

[0024] A transmission module, a first winding, a second winding, a contactor, and a voltage detection module, wherein the first winding and the second winding are connected in series through the contactor. When the car is driving, the voltage detection module detects the voltage value at the output end of its generator. When the voltage value is higher than a predetermined value, the contactor cuts off the first winding or the second winding, reducing the number of winding operations, thereby achieving the purpose of controlling the output end voltage and ensuring the stability of the output end voltage, thereby reducing the size of the inverter and improving the performance of the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the embodiments:

[0026] Figure 1 A variable voltage permanent magnet generator is provided in an embodiment of the present utility model;

[0027] Figure 2 A schematic diagram of the working principle of the variable permanent magnet generator provided in an embodiment of the present utility model;

[0028] Figure 3A-3C This is a schematic diagram of the structure of coils in different phase windings provided in an embodiment of the present application.

[0029] Reference numerals:

[0030] Housing 101, transmission module 102, voltage detection module 103, control switch 1031, contactor 104, contactor coil 1041, winding 106, first winding 1061, second winding 1062, inverter 107 DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] Those skilled in the art will understand that in this specification, the wording "including" is an open-ended expression, which means that the described features exist but does not exclude other features. The directional words "up", "down", "left", "right", etc. are exemplary directions based on the drawings. Features defined as "first" and "second" implicitly include one or more of the features. Singular expressions can also be used in the plural. "Multiple" means two or more. The terms "installed", "connected", and "connected" can be fixed connections, detachable connections, or integrated connections; they can be directly connected, or indirectly connected through an intermediate medium, or they can be internal connections between two elements. In addition, "connected" can include wireless connections.

[0033] Automobiles and other devices are equipped with internal self-generating systems to improve energy utilization. For example, a generator mounted on the vehicle chassis drives a permanent magnet generator (PMG) to generate electricity, achieving energy recovery. However, in existing technologies, the output voltage of the PMG generator fluctuates significantly due to the vehicle's speed. This increases the size and weight of the inverter required to match the PMG generator and ensure proper operation of the output voltage. However, a larger inverter increases the vehicle's weight, hindering further improvements in vehicle performance.

[0034] The embodiment of the present invention provides a novel variable voltage permanent magnet generator, which controls the voltage at its output end by setting a variable voltage permanent magnet generator, thereby controlling the size of the inverter and improving the performance of equipment such as automobiles.

[0035] like Figure 1 As shown, Figure 1 The variable voltage permanent magnet generator provided in the embodiment of the present invention includes a permanent magnet generator housing 101 , a transmission module 102 , a winding 106 , a voltage detection module 103 and a contactor 104 .

[0036] Specifically, when arranging the aforementioned components, the transformer-type permanent magnet generator housing 101 can be configured as a sealed housing, and the other components can be arranged within the transformer-type permanent magnet generator housing 101 according to corresponding connection relationships. Accordingly, the transformer-type permanent magnet generator includes an input end and an output end, and the input end and the output end can be arranged relative to each other. In the embodiment of the present invention, the input end is primarily the power input end of the transformer-type permanent magnet generator, and the output end is the voltage output end of the transformer-type permanent magnet generator. When arranging the transmission module 102, the transmission module 102 can be arranged at one end of the transformer-type permanent magnet generator, such as at the input end of the transformer-type permanent magnet generator housing 101.

[0037] In the embodiment of the present invention, the transmission module 102 can be configured as a rotating shaft or other transmission component, and the transmission module 102 is connected to the engine on the vehicle chassis. Specifically, the output shaft end of the vehicle engine can be connected to the transmission module 102 of the permanent magnet generator. When the engine rotates, it will drive the transmission module 102 to rotate, thereby providing driving force for the permanent magnet generator, ensuring the normal operation of the permanent magnet generator.

[0038] Specifically, in the present invention, the winding 106 of the variable permanent magnet generator may include a first winding 1061 and a second winding 1062, each of which may be configured as a multi-turn coil. The first winding 1061 and the second winding 1062 are in transmission connection with the transmission module 102. The first winding 1061 and the second winding 1062 have the same number of turns, and the two different windings may be coaxially arranged. In an embodiment of the present invention, when arranging the winding coils corresponding to the first winding 1061 and the second winding 1062, the first winding 1061 may be arranged in an annular shape relative to the generator's rotating shaft, and the second winding 1061 may also be arranged in an annular shape relative to the generator's rotating shaft. Optionally, the first winding 1061 and the second winding 1062 may also be arranged according to a conventional winding assembly structure, and different winding structures are all within the scope of protection of the present invention.

[0039] Furthermore, in the embodiment of the present invention, the windings 106 are disposed in the housing of the transformer-type permanent magnet generator, and driven by the transmission module 102 , different windings rotate to form inductive cutting of magnetic field lines, thereby generating electrical energy.

[0040] In the embodiment of the present invention, when providing the first winding 1061 and the second winding 1062, each winding includes multiple different phase windings: for the first winding 1061, the first winding 1061 includes a U-phase winding, a V-phase winding, and a W-phase winding. For the second winding 1062, the second winding 1062 also includes a U-phase winding, a V-phase winding, and a W-phase winding. These different phase windings can be wound as needed to form different phase windings.

[0041] Furthermore, in the first winding 1061 or the second winding 1062, the windings of different phases may be arranged at equal distances. For example, in the first winding 1061, the spacing between the corresponding U-phase winding and the V-phase winding is the same as the spacing between the V-phase winding and the W-phase winding. Similarly, in the second winding 1062, the spacing between the U-phase winding and the V-phase winding is the same as the spacing between the V-phase winding and the W-phase winding.

[0042] In this embodiment of the present invention, by providing different first windings 1061 and second windings 1062, the operating states of the first windings 1061 and second windings 1062 can be controlled in real time during the generator's rotation. Specifically, when the speed of the transmission module 102 is too high, the number of active windings is reduced to achieve the desired voltage level at the output of the variable permanent magnet generator in the high-speed rotation mode. This avoids the problem of excessively high voltage at the output of the variable permanent magnet generator, which would otherwise result in an excessively large inverter.

[0043] Furthermore, when setting the voltage detection module 103 and the contactor 104 provided in the embodiment of the present invention, both are correspondingly arranged at the output end of the variable permanent magnet generator, such as being arranged in the fixed machine cover 105 of the variable permanent magnet generator, wherein the fixed machine cover 105 is detachably arranged on the outer surface of the shell, and the voltage detection module 103 is changed to be arranged on one side of the contactor 104, thereby facilitating the installation and disassembly of the voltage detection module 103 and the contactor 104.

[0044] In the embodiment of the present invention, the voltage detection module 103 can be arranged on one side of the contactor 104 and is arranged on the outer wall of the variable permanent magnet generator housing 101. The voltage detection module 103 is used to detect the magnitude of the output voltage at the output end of the variable permanent magnet generator. During the rotation of the transmission module 102 in the variable permanent magnet generator, when the voltage detection module 103 detects that the output voltage at the output end is higher than a predetermined value, the control switch in the voltage detection module 103 is actuated. Under the control of the control switch, the coils in the contactor 104 are energized, thereby causing the contactor 104 to automatically switch. For example, multiple switching switches in the contactor 104 are opened or closed, thereby disconnecting one set of windings, leaving only one set of windings in operation. Since the number of windings involved in the operation is reduced, the output voltage at the output end of the variable permanent magnet generator is reduced.

[0045] In this way, by controlling the number of working windings in the variable permanent magnet generator under high vehicle speed conditions, the problem of high output voltage at the output end is avoided, thereby effectively ensuring the size of the inverter that matches it.

[0046] like Figure 2 As shown, Figure 2 This is a schematic diagram of the working principle of the variable permanent magnet generator provided in the embodiment of the present utility model. Figure 1 In the structure of the variable permanent magnet generator, in the embodiment of the present invention, the corresponding U-phase winding, V-phase winding, and W-phase winding in the first winding 1061 are respectively N11-U1 coil winding, N12-V1 coil winding, and N13-W1 coil winding. Meanwhile, the corresponding U-phase winding, V-phase winding, and W-phase winding in the second winding 1062 are respectively N21-U2 coil winding, N22-V2 coil winding, and N23-W2 coil winding. Furthermore, when connected in series, the corresponding same-phase windings in different windings are connected in correspondence. For example, the U-phase winding in the first winding 1061 and the U-phase winding in the second winding 1062 are connected in series via corresponding contactors 104. Similarly, when connecting the V-phase winding and the W-phase winding, the above-mentioned connection correspondence is also configured, and no further details are given here.

[0047] Furthermore, during setting, the first winding 1061 and the second winding 1062 are connected in series through the contactor 104, such as the N11-U1 coil winding is set in series with the N21-U2 coil winding through the contactor 104, and the N12-V1 coil winding is set in series with the N22-V2 coil winding through the contactor 104.

[0048] In the embodiment of the present invention, when the contactor 104 is provided, the contactor 104 may include an AC contactor, or other types of contactors may be selected according to requirements. In the following embodiment, an AC contactor is used as an example for description.

[0049] Specifically, the voltage detection module 103 further includes a control switch 1031, and the AC contactor 104 further includes a plurality of switching switches, which can control the opening or closing of different switching switches to control the working quantity of different windings. Figure 2 In the structure, the switching switch may include K11, K10, K21, K20, K31, and K30.

[0050] Further, such as Figure 3A-3C As shown, Figure 3A-3C Schematic diagram of the structure of the coils in different phase windings provided in the embodiment of the present application. Figure 2 In the circuit structure, when setting the above-mentioned U-phase winding, V-phase winding and W-phase winding structures, they are respectively set according to the corresponding winding structures in the figure below, thereby forming a first winding 1061 and a second winding 1062.

[0051] Specific, combined Figure 2 In the circuit, when setting the above-mentioned switching switches, two switching switches are correspondingly set in the same phase winding, such as the switching switches K11 and K10 corresponding to the U-phase winding in the first winding 1061 and the U-phase winding in the second winding 1062. When K11 and K10 are both closed, the N21-U2 coil winding corresponding to the second winding 1062 is short-circuited, and only the N11-U1 coil winding corresponding to the first winding 1061 is actually involved in the work. When K11 is disconnected and K10 is closed, the N21-U2 coil winding corresponding to the second winding 1062 is connected in series with the N11-U1 coil winding corresponding to the first winding 1061. At this time, both are involved in the work. Similarly, the connections in the other phase windings are the same as the above-mentioned corresponding relationships and will not be further described here. In the embodiment of the present utility model, by controlling the opening or closing of the corresponding switching switches in each different phase winding, the number of windings working is controlled, thereby achieving the control of the output voltage of its generator output end.

[0052] Further, combined Figure 1 and Figure 2In the structure of the utility model, the transformer-type permanent magnet generator further includes an inverter 107, which can be arranged at the output end of the transformer-type permanent magnet generator, and when the various components are installed in conjunction, the contactor 104 further includes a contactor coil 1041, and the control switch 1031 of the voltage detection module 103 can control the operation of the contactor 104. When the vehicle speed is fast, the speed of the transmission module 102 driven by it is also fast. At this time, the output voltage detected by the voltage detection module 103 at the output end of the generator exceeds the set output voltage value. For example, the set maximum output voltage is A, and the voltage detected by the voltage detection module 103 is B, B>A. At this time, the control switch 1031 is closed, the contactor coil 1041 of the contactor 104 is energized, and the AC contactor 104 is operated.

[0053] Specifically, when the vehicle speed is low, both the first winding and the second winding are involved in the work, and when the vehicle speed is high, the AC contactor 104 starts to work, and the switching switch in the AC contactor 104 is opened or closed, thereby disconnecting the corresponding coil winding in the first winding 1061 or the second winding 1062, reducing the number of working windings under high-speed conditions, and then controlling the output voltage of the generator output end, thereby achieving the purpose of variable voltage to ensure the stability of the output voltage of the variable voltage generator.

[0054] Combine Figure 2 As shown in the working principle diagram, in the utility model, the inverter 107 also includes a U-phase output line, a V-phase output line and an N-phase output line. The above-mentioned different output lines can be set according to actual conditions, and when setting, one end of the control switch 1031 is electrically connected to the N-phase output line, the other end of the control switch 1031 is electrically connected to one end of the contactor coil of the contactor, and the other end of the contactor coil of the contactor is electrically connected to the U-phase output line, thereby realizing the coordination and control between the inverter 107, the contactor 104 and the voltage detection module 103.

[0055] Specifically, when the generator output voltage is lower than 500V, the contacts of the voltage detection module 103 are inoperative and disconnected, while the contacts of the AC contactor 104 are closed. The two windings of the variable voltage permanent magnet generator are connected in series. As the speed increases, the output voltage also increases. When the output voltage reaches 500V, the contacts of the voltage detection module 103 close, connecting the coils of the AC contactor 104. The contacts of the AC contactor 104 then disconnect, leaving only one set of windings supplying power. When the generator output voltage is higher than 500V, the contacts of the voltage detection module 103 are closed, while the contacts of the AC contactor 104 are disconnected. Only one set of windings in the generator supplies power. As the generator speed decreases, the generator output voltage also decreases. When the generator output voltage drops to 400V, the contacts of the voltage detection module disconnect, de-energizing the coils of the AC contactor, and closing the contacts. The two sets of windings in the generator are connected in series and supply power. Therefore, the output voltage stability is ensured by adjusting the number of working windings inside the variable permanent magnet generator.

[0056] Compared with the prior art, the technical solution provided by the present invention provides the following beneficial technical effects: by providing two different sets of windings in the transformer-type permanent magnet generator, such as the first winding 1061 and the second winding 1062, when the vehicle chassis speed is low, the two sets of windings are connected in series through the AC contactor and operate simultaneously, thus effectively ensuring that the output voltage of the generator does not drop too low. As the vehicle speed increases, the output voltage of the transformer-type permanent magnet generator also increases. When the voltage output at its output terminal exceeds a set value, the voltage detection module 103 provided in the present invention is activated. Through the switching action within the voltage detection module 103, the contactor coil 1041 of the AC contactor 104 is energized, thereby causing the AC contactor 104 to automatically switch and disconnect one set of auxiliary windings. At this time, at high speeds, only one set of windings remains operational, thereby reducing the output voltage of the generator and preventing it from being too high. This facilitates the design of the inverter, avoids the problems of large inverter volume and weight, and effectively improves the operating performance of the transformer-type permanent magnet generator.

[0057] Furthermore, an embodiment of the present invention also provides a variable-voltage permanent magnet power generation device, which includes a transmission motor and a variable-voltage permanent magnet generator. The transmission motor can drive the variable-voltage permanent magnet generator to rotate and make the variable-voltage permanent magnet generator output voltage. The variable-voltage permanent magnet generator is the permanent magnet generator provided in the embodiment of the present invention, thereby effectively ensuring the stability of the output voltage at the output end of the variable-voltage permanent magnet power generation device under different speed measurement or rotation speed conditions, thereby ensuring the performance of the device.

[0058] Those skilled in the art will appreciate that the various operations, methods, steps, measures, and solutions discussed in the present invention may be alternated, modified, rearranged, decomposed, combined, or deleted.

[0059] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A transformer-type permanent magnet generator having an input end and an output end, characterized in that: include: case; a transmission module passing through the housing and connected to the input end; The first winding and the second winding are transmission-connected to the transmission module and electrically connected to the output end; a contactor, disposed on the outer side of the side wall of the housing, wherein the first winding and the second winding are connected in series through the contactor; as well as, A voltage detection module is provided on one side of the contactor and is electrically connected to the output end; When the voltage detection module detects that the output terminal voltage is higher than a predetermined value, the contactor is used to cut off the first winding or the second winding.

2. The transformer-type permanent magnet generator according to claim 1, characterized in that: The first winding and the second winding have the same number of turns.

3. The transformer-type permanent magnet generator according to claim 2, characterized in that: The first winding and the second winding each include a U-phase winding, a V-phase winding, and a W-phase winding.

4. The transformer-type permanent magnet generator according to claim 3, characterized in that: The windings of different phases in the first winding are arranged at equal intervals, and the windings of different phases in the second winding are arranged at equal intervals.

5. The transformer-type permanent magnet generator according to claim 1, characterized in that: The contactor includes an AC contactor, one end of the AC contactor is electrically connected to the first winding, and the other end of the AC contactor is electrically connected to the second winding.

6. The transformer-type permanent magnet generator according to claim 5, characterized in that: The contactor includes a plurality of switches, and the switches are electrically connected to the first winding and the second winding respectively.

7. The transformer-type permanent magnet generator according to claim 1, characterized in that: The voltage detection module further includes a control switch, and the control switch is electrically connected to the contactor.

8. The transformer-type permanent magnet generator according to claim 7, characterized in that: The transformer-type permanent magnet generator further includes an inverter, and an output end of the inverter is electrically connected to the voltage detection module.

9. The transformer-type permanent magnet generator according to claim 8, characterized in that: The inverter includes a U-phase output line, a V-phase output line, a W-phase output line and an N-phase output line, one end of the control switch is electrically connected to the N-phase output line, the other end of the control switch is electrically connected to one end of the contactor, and the other end of the contactor is electrically connected to the U-phase output line.

10. A transformer-type permanent magnet power generation device, characterized in that: The invention comprises a transmission motor and a transformer-type permanent magnet generator according to any one of claims 1 to 9 connected to the transmission motor.

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