CN210744845U - Range extending system and electric automobile - Google Patents
Range extending system and electric automobile Download PDFInfo
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- CN210744845U CN210744845U CN201921440141.XU CN201921440141U CN210744845U CN 210744845 U CN210744845 U CN 210744845U CN 201921440141 U CN201921440141 U CN 201921440141U CN 210744845 U CN210744845 U CN 210744845U
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Abstract
The embodiment of the utility model discloses increase journey system and electric automobile relates to the technical field of charging, invents for the size that realizes adjusting battery charging voltage through the mode of adjusting excitation magnetic field. The range extending system is applied to an electric automobile and comprises: the hybrid excitation generator comprises an engine, a hybrid excitation generator, a rectifier and an excitation controller, wherein the output end of the engine is connected with a rotor of the hybrid excitation generator, an armature winding of the hybrid excitation generator is connected with the input end of the rectifier, the output end of the rectifier is used for being connected with a storage battery of the electric automobile, and the excitation controller is connected with an excitation winding of the hybrid excitation generator. The utility model is suitable for a charge for electric automobile's battery.
Description
Technical Field
The utility model relates to a technical field that charges especially relates to an increase journey system and electric automobile.
Background
The fuel engine automobile commonly used at present has various disadvantages such as low energy utilization rate, serious pollution and the like, and along with the enhancement of environmental awareness of people, the electric automobile is more and more popular among people. The electric automobile uses a vehicle-mounted power supply as power, and the motor drives wheels to run, so that the environmental pollution can be reduced, but the electric automobile is limited by the storage capacity of a storage battery, and has the defect of short endurance mileage.
Disclosure of Invention
In view of this, the embodiment of the utility model provides an increase journey system and electric automobile can realize adjusting the size of battery charging voltage through adjusting the mode in excitation magnetic field in a flexible way.
The embodiment of the utility model provides a range extending system is applied to electric automobile, include: the hybrid excitation generator comprises an engine, a hybrid excitation generator, a rectifier and an excitation controller, wherein the output end of the engine is connected with a rotor of the hybrid excitation generator, an armature winding of the hybrid excitation generator is connected with the input end of the rectifier, the output end of the rectifier is used for being connected with a storage battery of the electric automobile, and the excitation controller is connected with an excitation winding of the hybrid excitation generator.
According to the utility model discloses a concrete mode of realization, the hybrid excitation generator, include: the permanent magnets are arranged on the yoke part of the stator core, the number of the permanent magnets is even, and the excitation winding is arranged in a slot of the stator core; the permanent magnet, the first edge of the excitation winding and the second edge of the excitation winding are uniformly distributed along the circumferential direction of the stator core.
According to the utility model discloses a concrete mode of realization, the cross section of permanent magnet is the rectangle.
According to the utility model discloses a concrete implementation mode, the number of permanent magnet is 4.
According to the utility model discloses a concrete mode of realization, excitation winding's number is 2.
According to the utility model discloses a concrete implementation mode of embodiment, the permanent magnet is the tangential magnetization.
According to the utility model discloses a concrete implementation mode, the outer fringe of rotor core is equipped with protruding structure, the number of protruding structure is the even number, protruding structure is in outer fringe evenly distributed is unshakable in one's determination to the rotor.
According to the utility model discloses a concrete mode of realization, the rectifier is the three-phase bridge rectifier circuit who comprises the diode.
According to the utility model discloses a concrete implementation mode, the rectifier still includes: one end of the filter capacitor is connected to the positive output end of the rectifier, and the other end of the filter capacitor is connected to the negative output end of the rectifier; or, the filter inductor is connected in series with the positive output end or the negative output end of the rectifier.
According to the utility model discloses a concrete mode of realization, excitation controller includes: the diode comprises a first diode, a second diode, an insulated gate bipolar transistor and a direct current power supply, wherein the anode of the first diode is connected with the collector of the insulated gate bipolar transistor, and the cathode of the first diode is connected with the anode of the direct current power supply; the cathode of the second diode is connected with the collector of the insulated gate bipolar transistor, and the anode of the second diode is connected with the emitter of the insulated gate bipolar transistor; and the emitter of the insulated gate bipolar transistor is connected with the cathode of the direct current power supply.
According to the utility model discloses a concrete mode of realization, DC power supply does electric automobile's battery.
The embodiment of the utility model provides an electric automobile is still provided, include: the system comprises a storage battery, a driving motor, an inverter and the range extending system in any one of the implementation modes, wherein the output end of the range extending system is connected with the storage battery, the storage battery is connected with the input end of the inverter, the output end of the inverter is connected with the input end of the driving motor, and the output end of the driving motor is connected with the driving wheel of the electric automobile.
In the embodiment, the output end of the engine is connected with the rotor of the hybrid excitation generator, the armature winding of the hybrid excitation generator is connected with the input end of the rectifier, the excitation controller is connected with the excitation winding of the hybrid excitation generator, the output end of the engine drives the rotor of the hybrid excitation generator to rotate, and the excitation controller controls the current in the excitation winding, so that the induced electromotive force generated by the armature winding can be changed along with the induced electromotive force by adjusting the air gap flux of the hybrid excitation generator, and the direct-current voltage obtained by the rectifier can be changed, so that the charging voltage of the storage battery can be flexibly adjusted by adjusting the excitation field according to different working conditions of the electric automobile.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a first embodiment of a range extending system provided by the present invention;
fig. 2 is a schematic structural diagram of a cross section of a hybrid excitation generator according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a rectifier according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an excitation controller according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram illustrating integration of a rectifier and an excitation controller according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Fig. 1 is the utility model provides a pair of increase distance system's embodiment one's schematic structure diagram, as shown in fig. 1, electric automobile is applied to this embodiment, the increase distance system of this embodiment, include: the hybrid excitation generator comprises an engine 1, a hybrid excitation generator 2, a rectifier 3 and an excitation controller 4, wherein the output end of the engine 1 is connected with a rotor of the hybrid excitation generator 2, an armature winding of the hybrid excitation generator 2 is connected with the input end of the rectifier 3, the output end of the rectifier 3 is used for being connected with a storage battery of the electric automobile, and the excitation controller 4 is connected with an excitation winding of the hybrid excitation generator.
In the present embodiment, the engine 1 can convert other forms of energy into mechanical energy; the excitation mode of the compound excitation generator 2 can be that the permanent magnet and the excitation winding are excited together to generate a magnetic field; the armature winding of the compound excitation generator 2 can be a three-phase winding; the rectifier 3 may be a three-phase bridge rectifier circuit; the excitation controller 4 is connected with the excitation winding of the hybrid excitation generator 2 and can provide excitation current for the excitation winding.
The compound excitation generator 2 can establish a magnetic field by the combined action of the permanent magnet and the excitation winding, the output end of the engine rotates to drive the rotor of the compound excitation generator to rotate, induced electromotive force is generated in the armature winding, the electromotive force induced by the armature winding is converted into direct-current voltage through the rectifier, and the output end of the collator can be connected with a storage battery of the electric automobile to charge the storage battery.
According to different working conditions of the electric automobile, the current in the excitation winding can be adjusted by adjusting the excitation controller, and the current in the excitation winding and the permanent magnet act together to change the air gap flux of the hybrid excitation generator, so that the induced electromotive force generated in the armature winding changes.
In the embodiment, the output end of the engine is connected with the rotor of the hybrid excitation generator, the armature winding of the hybrid excitation generator is connected with the input end of the rectifier, the excitation controller is connected with the excitation winding of the hybrid excitation generator, the output end of the engine drives the rotor of the hybrid excitation generator to rotate, and the excitation controller controls the current in the excitation winding, so that the induced electromotive force generated by the armature winding can be changed along with the induced electromotive force by adjusting the air gap flux of the hybrid excitation generator, and the direct-current voltage obtained by the rectifier can be changed, so that the charging voltage of the storage battery can be flexibly adjusted by adjusting the excitation field according to different working conditions of the electric automobile.
Fig. 2 is a schematic structural diagram of a cross section of a hybrid excitation generator according to an embodiment of the present invention, as shown in fig. 2, the hybrid excitation generator includes: the permanent magnet generator comprises a stator core 21 and permanent magnets 23, wherein the permanent magnets 23 are arranged at the yoke part of the stator core 21, the number of the permanent magnets 23 is even, and the excitation windings 24 are arranged in slots of the stator core 21; the permanent magnets 23, the first sides 241 of the field winding, and the second sides 242 of the field winding are uniformly distributed along the circumferential direction of the stator core 21.
In this embodiment, the number of the permanent magnets 23 may be an even number such as 2, 4, 6, etc.;
as an alternative embodiment, the number of the permanent magnets 23 is 4;
the cross section area of the permanent magnet can be any shape, and the performance index of the generator can be met only by matching with other sizes of the hybrid excitation generator.
As an alternative embodiment, the permanent magnet is rectangular in cross-section.
In the embodiment, the cross section of the permanent magnet is designed to be rectangular, so that the working procedures for processing the permanent magnet can be reduced, and the manufacturing process of the whole composite excitation generator is further saved.
In the present embodiment, the permanent magnet 23 is provided at the yoke portion of the stator core 21 and is positioned in the radial direction of extension of a certain stator slot; the first side 241 and the second side 242 of the field winding 24 are located in different stator slots; the permanent magnets 23, the first sides 241 of the field winding, and the second sides 242 of the field winding are uniformly distributed along the circumferential direction of the stator core 21.
In this embodiment, the stator core is provided with 24 stator slots, which may include 4 groups of parallel slots, each group of parallel slots may include two parallel slots, and the 4 groups of parallel slots are uniformly distributed along the circumferential direction of the stator.
In this embodiment, the cross-sectional areas of the stator slots where the first side 241 and the second side 242 of the excitation winding 24 are located and the stator slots closest to the permanent magnet are larger than the cross-sectional areas of the other stator slots, so that the excitation winding and the permanent magnet are convenient to mount, and the cross-sectional areas of the other stator slots are smaller, thereby effectively reducing the volume of the whole hybrid excitation generator.
In this embodiment, the radial length of the one-sided air gap between the stator core and the rotor core may be 0.5 mm.
In this embodiment, the permanent magnets are disposed at the yoke portion of the stator core, the excitation windings are disposed in the slots of the stator core, the number of the permanent magnets is even, and the permanent magnets, the first edges of the excitation windings, and the second edges of the excitation windings are uniformly distributed along the circumferential direction of the stator core. The magnetic field is established by the current in the permanent magnet and the excitation winding together, the current in the permanent magnet and the excitation winding can be adjusted to establish the magnetic field together by controlling the current in the excitation winding, so that the charging voltage of a storage battery on the electric automobile can be flexibly adjusted, and symmetrical electromotive force can be generated on the three-phase armature winding by uniformly distributing the permanent magnet, the first edge of the excitation winding and the second edge of the excitation winding along the circumferential direction of the stator core.
As an alternative embodiment, the number of field windings is 2.
As an alternative embodiment, the permanent magnet is tangentially magnetized.
In this embodiment, the permanent magnet is tangentially magnetized. Referring to fig. 2, the polarities of the opposite surfaces of the permanent magnets 231 and 232 oppositely disposed in fig. 2 may be the same S pole or the same N pole.
In the embodiment, the magnetic potential provided by the permanent magnet in unit volume can be improved by magnetizing the permanent magnet tangentially, so that the volume of the whole hybrid excitation generator is convenient to reduce.
Referring to fig. 2, in an embodiment of the present invention, in a schematic structural diagram of a rotor of a hybrid excitation generator, the outer edge of the rotor core is provided with protruding structures 221, the number of the protruding structures 221 is an even number, and the protruding structures 221 are uniformly distributed on the outer edge of the rotor core.
In this embodiment, the number of the protruding structures 221 may be an even number, such as 2, 4, 6, etc.;
as a preferred embodiment, the number of the convex structures is 16.
In this embodiment, the number of the stator teeth matched with the rotor structure may be 24, and then, through the reasonable design of the size of the stator teeth or the size of the protruding structure 221 on the rotor, at any time when the rotor rotates, the stator teeth and the protruding structure on the rotor are convenient to have a superposed part in the circumferential direction, so that the magnetic resistance of a magnetic circuit can be reduced, the generating efficiency of the hybrid excitation generator can be improved, and the rotor structure of the hybrid excitation generator is simple, and the complexity of a range-extended system can be reduced conveniently.
Fig. 3 is a schematic structural diagram of a rectifier according to an embodiment of the present invention, and as shown in fig. 3, the rectifier is a three-phase bridge rectifier circuit composed of diodes 131.
In this embodiment, the diode 131 is an uncontrolled rectifying device; the voltage between the anode and the cathode of the diode 131 is greater than the dead zone voltage, and the diode can be turned on; six diodes 131 constitute a three-phase bridge rectifier circuit.
In the embodiment, the rectifier is a three-phase bridge rectifier circuit formed by diodes, and the diodes are uncontrolled rectifier devices, so that a control circuit for controlling the on or off of some elements in the rectifier is not required to be additionally added in the process of rectifying alternating current by using the diodes, so that the range-extending system is simple in structure, and the manufacturing cost and the size of the range-extending system are reduced conveniently.
As an optional implementation, the rectifier further includes: and one end of the filter capacitor is connected to the positive output end of the rectifier, and the other end of the filter capacitor is connected to the negative output end of the rectifier.
In this embodiment, the positive and negative output terminals of the rectifier are connected to the filter capacitor, so that the voltage output from the three-phase bridge rectifier circuit can be filtered, thereby reducing harmonics included in the voltage for charging the battery, and improving the quality of the dc voltage for charging the battery.
As an optional implementation, the rectifier further includes: and the filter inductor is connected in series with the positive output end of the rectifier.
As an optional implementation, the rectifier further includes: and the filter inductor is connected in series with the negative output end of the rectifier.
Fig. 4 is a schematic structural diagram of an excitation controller according to an embodiment of the present invention, and as shown in fig. 4, the excitation controller includes: a first diode 141, a second diode 142, an insulated gate bipolar transistor 143, and a dc power supply (not shown), wherein an anode of the first diode is connected to a collector of the insulated gate bipolar transistor, and a cathode of the first diode is connected to an anode of the dc power supply; the cathode of the second diode is connected with the collector of the insulated gate bipolar transistor, and the anode of the second diode is connected with the emitter of the insulated gate bipolar transistor; and the emitter of the insulated gate bipolar transistor is connected with the cathode of the direct current power supply.
In this embodiment, the output end of the excitation controller may be connected to an excitation winding of the hybrid excitation generator, and an Insulated Gate Bipolar Transistor (IGBT), the excitation winding and a dc power supply are connected in series; the microprocessor is connected with a Gate electrode of the Insulated Gate Bipolar Transistor, when the microprocessor sends a control signal, the microprocessor controls the Insulated Gate Bipolar Transistor (IGBT) to be conducted, and the microprocessor can control the conducting degree of the IGBT, namely the current flowing through a collector electrode and an emitter electrode; the first diode and the second diode are freewheeling diodes to protect the IGBT.
In the embodiment, the current flowing through the IGBT can be controlled by controlling the conduction degree of the IGBT, the excitation controller is connected with the excitation winding to provide current for the excitation winding, and the current in the IGBT is the same as the current in the excitation winding, so that the current flowing through the excitation winding in the hybrid excitation generator can be controlled by controlling the conduction degree of the IGBT.
As an optional embodiment, the dc power supply is a battery of the electric vehicle.
In this embodiment, the storage battery of the electric vehicle is used as the dc power supply in the excitation controller, so that the number of the components of the range extending system can be reduced, and the complexity of the range extending system can be reduced.
In this embodiment, the excitation controller and the rectifier are both connected to a battery of the electric vehicle.
Fig. 5 is a schematic structural diagram illustrating integration of a rectifier and an excitation controller according to an embodiment of the present invention. In the present embodiment, the excitation controller and the rectifier share the battery of the electric vehicle.
The utility model also provides an electric automobile, include: the output end of the range extending system is connected with the storage battery, the storage battery is connected with the input end of the inverter, the output end of the inverter is connected with the input end of the driving motor, and the output end of the driving motor is connected with the driving wheel of the electric automobile.
In this embodiment, the output end of the range extending system is connected with the storage battery, and in the electric vehicle, the storage battery is conveniently charged through the range extending system.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.
In particular, as for the apparatus embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
For convenience of description, the above devices are described separately in terms of functional division into various units/modules. Of course, the functionality of the various units/modules may be implemented in the same one or more software and/or hardware implementations of the invention.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (12)
1. A range extending system is characterized by being applied to an electric automobile and comprising; the hybrid excitation generator comprises an engine, a hybrid excitation generator, a rectifier and an excitation controller, wherein the output end of the engine is connected with a rotor of the hybrid excitation generator, an armature winding of the hybrid excitation generator is connected with the input end of the rectifier, the output end of the rectifier is used for being connected with a storage battery of the electric automobile, and the excitation controller is connected with an excitation winding of the hybrid excitation generator.
2. The range extension system of claim 1, wherein the hybrid excited generator comprises: the permanent magnets are arranged on the yoke part of the stator core, the number of the permanent magnets is even, and the excitation winding is arranged in a slot of the stator core; the permanent magnet, the first edge of the excitation winding and the second edge of the excitation winding are uniformly distributed along the circumferential direction of the stator core.
3. The range extension system of claim 2, wherein the permanent magnet is rectangular in cross-section.
4. The range extension system of claim 2, wherein the number of permanent magnets is 4.
5. The range extension system of claim 2, wherein the number of field windings is 2.
6. The range extension system of claim 2, wherein the permanent magnet is tangentially charged.
7. The range extension system of claim 2, further comprising: the rotor comprises a rotor core, wherein the outer edge of the rotor core is provided with a plurality of protruding structures, the number of the protruding structures is even, and the protruding structures are uniformly distributed on the outer edge of the rotor core.
8. The range extension system of claim 1, wherein the rectifier is a three-phase bridge rectifier circuit comprising diodes.
9. The range extension system of claim 8, wherein the rectifier further comprises: one end of the filter capacitor is connected to the positive output end of the rectifier, and the other end of the filter capacitor is connected to the negative output end of the rectifier; or the like, or, alternatively,
and the filter inductor is connected in series with the positive output end or the negative output end of the rectifier.
10. The range extension system of claim 1, wherein the excitation controller comprises: the diode comprises a first diode, a second diode, an insulated gate bipolar transistor and a direct current power supply, wherein the anode of the first diode is connected with the collector of the insulated gate bipolar transistor, and the cathode of the first diode is connected with the anode of the direct current power supply; the cathode of the second diode is connected with the collector of the insulated gate bipolar transistor, and the anode of the second diode is connected with the emitter of the insulated gate bipolar transistor; and the emitter of the insulated gate bipolar transistor is connected with the cathode of the direct current power supply.
11. The range extension system of claim 10, wherein the dc power source is a battery of the electric vehicle.
12. An electric vehicle comprising: the range extending system comprises a storage battery, a driving motor, an inverter and the range extending system according to any one of the claims 1 to 11, wherein the output end of the range extending system is connected with the storage battery, the storage battery is connected with the input end of the inverter, the output end of the inverter is connected with the input end of the driving motor, and the output end of the driving motor is connected with the driving wheel of the electric automobile.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921440141.XU CN210744845U (en) | 2019-08-30 | 2019-08-30 | Range extending system and electric automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921440141.XU CN210744845U (en) | 2019-08-30 | 2019-08-30 | Range extending system and electric automobile |
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| CN210744845U true CN210744845U (en) | 2020-06-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110556941A (en) * | 2019-08-30 | 2019-12-10 | 北京动力源新能源科技有限责任公司 | Range extending system and electric automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110556941A (en) * | 2019-08-30 | 2019-12-10 | 北京动力源新能源科技有限责任公司 | Range extending system and electric automobile |
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