CN213026264U - Battery oscillation heating device and vehicle - Google Patents
Battery oscillation heating device and vehicle Download PDFInfo
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- CN213026264U CN213026264U CN202021026211.XU CN202021026211U CN213026264U CN 213026264 U CN213026264 U CN 213026264U CN 202021026211 U CN202021026211 U CN 202021026211U CN 213026264 U CN213026264 U CN 213026264U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The application provides a battery oscillation heating device and vehicle, wherein, battery oscillation heating device includes: the first junction end of the conversion device is connected with the positive pole of the battery, and the second junction end of the conversion device is connected with the negative pole of the battery; the first end of the motor winding is connected with the conversion device; and the first end of the capacitor is connected with the second end of the motor winding, and the second end of the capacitor is connected with the second bus end of the conversion device. When the controllable element conversion device is controlled, the battery, the motor winding and the capacitor form different loops, and the battery and the capacitor exchange energy, namely, the current flowing through the battery is different in the different loops, so that oscillation current is formed on the battery, and the internal resistance of the battery generates heat, thereby realizing the heating of the battery.
Description
Technical Field
The application relates to the field of batteries, in particular to a battery oscillation heating device and a vehicle.
Background
The performance of the battery is related to the temperature of the battery, for example, the performance of the battery in a low temperature environment is greatly reduced compared with the normal temperature. For example, when the temperature is zero, the discharge capacity of the battery decreases with a decrease in the temperature, and in some areas, the time at the temperature of zero or less is long, and it is necessary to design a heating device for the battery in order to use the battery in a low-temperature environment, that is, to promote a new energy vehicle in a low-temperature area or season.
SUMMERY OF THE UTILITY MODEL
The purpose of the present application is to provide a battery oscillation heating device that heats a battery and a vehicle having the battery oscillation heating device.
The present application provides in a first aspect a battery oscillation heating apparatus comprising:
the first junction end of the conversion device is connected with the positive pole of the battery, and the second junction end of the conversion device is connected with the negative pole of the battery;
the first end of the motor winding is connected with the conversion device;
and the first end of the capacitor is connected with the second end of the motor winding, and the second end of the capacitor is connected with the second bus end of the conversion device.
A second aspect of the present application provides a vehicle comprising a battery and a battery oscillating heating device according to the first aspect of the present application.
The application provides a battery oscillation heating device, wherein when controllable element conversion device is controlled, a battery, a motor winding and a capacitor can form different loops, so that the battery and the capacitor can exchange energy, namely, the current flowing through the battery is different in different loops, further oscillation current is formed on the battery, the internal resistance of the battery can generate heat, and the heating of the battery is realized.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of an embodiment of a battery oscillating heating device according to the present application;
FIG. 2A is a schematic structural diagram of another embodiment of the battery oscillating heating device of the present application;
FIG. 2B is a schematic structural diagram of another embodiment of the battery oscillating heating device of the present application;
FIGS. 3A-3D are schematic diagrams of 4 loops formed by one embodiment of the battery oscillating heating circuit of FIG. 2A;
FIGS. 4A-4D are schematic diagrams of 4 loops formed by another embodiment of the battery oscillating heating circuit of FIG. 2A;
FIGS. 5A-5D are schematic diagrams of 4 loops formed by another embodiment of the battery oscillating heating circuit of FIG. 2A;
fig. 6 is a schematic structural view of the vehicle of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In order to explain the technical means of the present application, the following description will be given by way of specific examples.
The embodiment of the application provides a battery oscillation heating device, which is used for controlling a controllable element in the battery oscillation heating device based on the battery oscillation heating device to enable oscillation current to flow through a battery to form battery discharging and battery charging, and the internal resistance of the battery can generate heat in the discharging and charging processes of the battery, so that the heating of the battery is realized. Specifically, as shown in fig. 1, the battery oscillating and heating device 100 is connected to a battery 10, and the battery oscillating and heating device 100 includes a converter 20, a motor winding 30, and a capacitor 40.
Wherein the inverter device 20 is a controllable component having a first bus end connected to the positive terminal of the battery 10, a second bus end connected to the negative terminal of the battery 10 to connect the inverter device 20 and the battery 10 together, and a midpoint end connected to the first end of the motor winding 30 to be connected to the motor winding 30 of the inverter device 20; a first terminal of the capacitor 40 is connected to a second terminal of the motor winding 30 and a second terminal of the capacitor 40 is connected to a second bus terminal of the inverter device 20.
When the controllable element converter 20 in the battery oscillation heating device 100 is controlled, the battery 10, the motor winding 30 and the capacitor 40 form different loops, so that the battery 10 and the capacitor 40 perform energy exchange, that is, the current flowing through the battery 10 is different in different loops, and further, an oscillation current is formed on the battery 10, and the internal resistance of the battery 10 generates heat, so that the heating of the battery 10 is realized.
In a preferred embodiment, the battery oscillating heater 100 further comprises a switch 50, the switch 50 and the capacitor 40 are connected in series, a first end of the series-connected switch 50 and a first end of the capacitor 40 are connected to a second end of the motor winding 30, and a second end of the series-connected switch 50 and a second end of the capacitor 40 are connected to a second bus of the inverter 20.
In the first case, as shown in fig. 2A, a first terminal of the switch 50 forms a first terminal of the switch 50 and the capacitor 40 connected in series, a second terminal of the capacitor 40 forms a second terminal of the switch 50 and the capacitor 40 connected in series, that is, the first terminal of the switch 50 is connected to a second terminal of the motor winding 30, the second terminal of the switch 50 is connected to a first terminal of the capacitor 40, and the second terminal of the capacitor 40 is connected to a second bus terminal of the inverter 20.
In the second case, as shown in fig. 2B, the first terminal of the capacitor 40 forms a first terminal of the switch 50 and the capacitor 40 connected in series, the second terminal of the switch 50 forms a second terminal of the switch 50 and the capacitor 40 connected in series, that is, the first terminal of the capacitor 40 is connected to the second terminal of the motor winding 30, the second terminal of the capacitor 40 is connected to the first terminal of the switch 50, and the second terminal of the switch 50 is connected to the second bus terminal of the inverter 20.
By additionally arranging the switch 50, the switch 50 is used as a controllable element, when the switch 50 is controlled, the battery oscillation heating device 100 can realize a driving motor driving function and a battery oscillation heating function, and when the switch 50 is controlled to be switched off, the battery 10, the conversion device 20 and the motor winding 30 form a motor driving circuit to realize the motor driving function; when the switch 50 is controlled to be turned on, the battery 10, the inverter 20, the motor winding 30, the switch 50 and the capacitor 40 form a battery oscillation heating circuit to realize the battery oscillation heating function. That is, the motor driving function and the battery oscillating and heating function realized by the battery oscillating and heating device 100 of the present application reuse the converter 20 and the motor winding 30, so that the cost of the realized motor driving function and the battery oscillating and heating function can be reduced, and the space of the realized motor driving function and the battery oscillating and heating function can be reduced.
Through setting up switch 50 between the second end of motor winding 30 and the first end of electric capacity 40, when battery 10, conversion equipment 20 and motor winding 30 formed the motor drive circuit, electric capacity 40 both ends do not have voltage, have improved the safety in the battery oscillation heating device 100 use of this application, can reduce the risk of personnel's electric shock, still can slow down electric capacity 40's ageing, reducible EMC radiation again.
In the preferred embodiment of the present application, the distance between the first end of the switch 50 and the second end of the motor winding 30 is L1, the distance between the second end of the motor winding 30 and the first end of the capacitor 40 is L2, and L1 < L2, so as to improve the safety of the battery oscillating and heating device 100 during use, i.e. to further reduce EMC radiation.
In the preferred embodiment of the present application, the switch 50 is disposed in the housing of the motor corresponding to the motor winding 30, that is, the switch 50 is disposed at the second end of the motor winding 30, which is very close to the second end of the motor winding 30, so that the safety of the battery oscillating and heating device 100 in the application process is improved, the risk of electric shock of the person can be further reduced, and the EMC radiation can be further reduced.
When the controllable element conversion device 20 is controlled, the battery oscillation heating circuit in the application can form a battery discharge loop, a motor winding follow current loop, a motor winding energy storage loop and a battery charging loop; the battery discharge loop, the motor winding follow current loop, the motor winding energy storage loop and the battery charging loop form a cycle of the battery oscillation heating function in the application.
In the application, a battery discharge loop, a motor winding follow current loop, a motor winding energy storage loop and a battery charging loop can be formed in sequence to realize the battery oscillation heating function in the application; or after the battery discharging loop and the motor winding follow current loop circulate, the motor winding energy storage loop and the battery charging loop can be recycled to realize the battery oscillation heating function in the application.
The battery oscillation heating circuit can realize the heating of the battery 10, and when the controllable element conversion device 20 is controlled, the internal resistance in the discharging and charging processes of the battery 10 generates heat to achieve the purpose of temperature rise of the battery 10.
Specifically, the battery 10 discharges to the capacitor 40 and the motor winding 30 through the upper arm of the converter 20 and the switch 50 to form a battery discharge circuit, and as the on-time of the upper arm of the converter 20 increases, the voltage across the capacitor 40 increases continuously, the capacitor 40 stores energy, and the battery 10 discharges.
The motor winding 30 forms a motor winding freewheeling circuit through the switch 50, the capacitor 40 and the lower arm freewheeling of the converter 20, the voltage across the capacitor 40 continues to increase, and at the same time, the current flowing out of the second end of the motor winding 30 gradually decreases.
The capacitor 40 stores energy to the motor winding 30 through the switch 50 and the lower arm of the conversion device 20 to form a motor winding energy storage loop, in the motor winding freewheeling loop, when the current flowing out of the second end of the motor winding 30 is reduced to zero, the voltage at the two ends of the capacitor 40 reaches the maximum, the capacitor 40 automatically converts the energy received by the motor winding 30 into energy released to the motor winding 30, that is, the current direction on the motor winding 30 starts to reverse, and meanwhile, the voltage at the two ends of the capacitor 40 continuously decreases.
The capacitor 40 and the motor winding 30 discharge to the battery 10 through the switch 50 and the upper arm of the inverter 20 to form a battery charging circuit, the capacitor 40 releases energy, the voltage at two ends is continuously reduced, and the battery 10 is charged until the current flowing through the capacitor 40 is gradually reduced to zero.
In a particular embodiment, the transformation device 20 comprises a first phase leg, a second phase leg, and a third phase leg, and the motor windings 30 comprise a first phase motor winding, a second phase motor winding, and a third phase motor winding; the first end of the first phase bridge arm, the first end of the second phase bridge arm and the first end of the third phase bridge arm are connected together to form a first junction end of the conversion device 20, and the second end of the first phase bridge arm, the second end of the second phase bridge arm and the second end of the third phase bridge arm are connected together to form a second junction end of the conversion device 20; the first end of the first phase motor winding is connected with the midpoint of the first phase bridge arm, the first end of the second phase motor winding is connected with the midpoint of the second phase bridge arm, the first end of the third phase motor winding is connected with the midpoint of the third phase bridge arm, the midpoint of the first phase bridge arm, the midpoint of the second phase bridge arm and the midpoint of the third phase bridge arm form the midpoint end of the transformation device 20 together, the first end of the first phase motor winding, the first end of the second phase motor winding and the first end of the third phase motor winding form the first end of the motor winding 30, and the second end of the first phase motor winding, the second end of the second phase motor winding and the second end of the third phase motor winding are connected together to form the second end of the motor winding 30.
On the basis of the above specific embodiments, the battery oscillation heating apparatus 100 of the present application may select the bridge arm and the corresponding winding of the inverter 20 and the motor winding 30, which participate in the battery oscillation heating function, so that which phase of the bridge arm and the corresponding motor winding 30 to select, which two phases of the bridge arm and the corresponding motor winding 30 to select, or which three phases of the bridge arm and the corresponding motor winding 30 to select may be determined according to the temperatures of the motors corresponding to the inverter 20 and the motor winding 30, or according to the lifetimes of the inverter 20 and the motor winding 30, or according to the conditions of the battery oscillation heating power, and the like. The application provides the options and can also meet any combination of the options, which greatly meets the requirements of various working conditions.
If the first phase leg and the first phase motor winding 30 are selected to participate in the battery oscillation heating function, or a combination including the first phase leg and the first phase motor winding 30 is selected to participate in the battery oscillation heating function, then: the battery 10, the first phase bridge arm, the first phase motor winding, the switch 50 and the capacitor 40 form a battery oscillation heating circuit; the oscillation heating circuit comprises a battery discharging circuit, a motor winding follow current circuit, a motor winding energy storage circuit and a battery charging circuit; the battery 10 discharges to the capacitor 40 and the first-phase motor winding through the upper bridge arm of the first-phase bridge arm and the switch 50 to form a battery discharge loop, the voltage at two ends of the capacitor 40 continuously increases along with the increase of the conduction time of the upper bridge arm of the first-phase bridge arm, the capacitor 40 stores energy, and the battery 10 discharges; the first-phase motor winding forms a motor winding follow current loop through the switch 50, the capacitor 40 and the lower bridge arm follow current of the first-phase bridge arm, the voltage at two ends of the capacitor 40 continues to increase, and meanwhile, the current flowing out of the second end of the first-phase motor winding 30 gradually decreases; the capacitor 40 stores energy to the first-phase motor winding through the switch 50 and the lower bridge arm of the first-phase bridge arm to form a motor winding energy storage loop, in the first-phase motor winding follow current loop, when the current flowing out of the second end of the first-phase motor winding is reduced to zero, the voltage at two ends of the capacitor 40 reaches the maximum, the capacitor 40 automatically converts the energy received by the first-phase motor winding into energy released to the first-phase motor winding 30, namely the current direction on the first-phase motor winding starts to reverse, and meanwhile, the voltage at two ends of the capacitor 40 is continuously reduced; the capacitor 40 and the first-phase motor winding discharge to the battery 10 through the switch 50 and the upper bridge arm of the first-phase bridge arm to form a battery charging loop, the capacitor 40 releases energy, the voltage at two ends of the capacitor is continuously reduced, and the battery 10 is charged until the current flowing through the capacitor 40 is gradually reduced to zero.
When the temperature of the first-phase bridge arm in the conversion device 20 and the first-phase motor winding in the motor corresponding to the motor winding 30 is below the safe temperature, and the use frequency of the first-phase bridge arm in the conversion device 20 is lower than that of the other phase bridge arms, or the battery oscillation heating power is at a first preset value (the battery oscillation heating power at the first preset value means that the battery oscillation heating power requirement can be met only by one phase bridge arm participating in the battery oscillation heating function), the requirements of the battery oscillation heating function can be met and the whole battery oscillation heating device 100 can be protected by selecting the first-phase bridge arm and the first-phase motor winding to participate in the battery oscillation heating function.
If the second phase bridge arm and the second phase motor winding are selected to participate in the battery oscillation heating function, or a combination is selected to participate in the battery oscillation heating function, and the combination comprises the second phase bridge arm and the second phase motor winding, then: the battery 10, the second phase bridge arm, the second phase motor winding, the switch 50 and the capacitor 40 form a battery oscillation heating circuit; the oscillation heating circuit comprises a battery discharging circuit, a motor winding follow current circuit, a motor winding energy storage circuit and a battery charging circuit; the battery 10 discharges to the capacitor 40 and the second-phase motor winding through the upper bridge arm of the second-phase bridge arm and the switch 50 to form a battery discharge loop, the voltage at two ends of the capacitor 40 continuously increases along with the increase of the conduction time of the upper bridge arm of the second-phase bridge arm, the capacitor 40 stores energy, and the battery 10 discharges; the second-phase motor winding forms a motor winding follow current loop through the switch 50, the capacitor 40 and the lower bridge arm follow current of the second-phase bridge arm, the voltage at two ends of the capacitor 40 continues to increase, and meanwhile, the current flowing out of the second end of the second-phase motor winding can be gradually reduced; the capacitor 40 stores energy to the second-phase motor winding through the switch 50 and the lower bridge arm of the second-phase bridge arm to form a motor winding energy storage loop, in the second-phase motor winding follow current loop, when the current flowing out of the second end of the second-phase motor winding is reduced to zero, the voltage at the two ends of the capacitor 40 reaches the maximum, the capacitor 40 can automatically convert the energy received by the second-phase motor winding into energy released to the second-phase motor winding, namely the current direction on the second-phase motor winding starts to be reversed, and meanwhile, the voltage at the two ends of the capacitor 40 can be continuously reduced; the capacitor 40 and the second-phase motor winding discharge to the battery 10 through the switch 50 and the upper bridge arm of the second-phase bridge arm to form a battery charging loop, the capacitor 40 releases energy, the voltage at two ends is continuously reduced, and the battery 10 is charged until the current flowing through the capacitor 40 is gradually reduced to zero.
When the temperature of the second phase bridge arm in the converter 20 and the second phase motor winding in the motor corresponding to the motor winding 30 is below the safe temperature, and the use frequency of the second phase bridge arm in the converter 20 is lower than that of the other phase bridge arms, or the battery oscillation heating power is at the first preset value (the battery oscillation heating power at the first preset value means that the battery oscillation heating power requirement can be met only by one phase bridge arm participating in the battery oscillation heating function), the second phase bridge arm and the second phase motor winding can be selected to participate in the battery oscillation heating function, so that the purposes of meeting the battery oscillation heating function requirement and protecting the whole battery oscillation heating device 100 are achieved.
If a third phase bridge arm and a third phase motor winding are selected to participate in the battery oscillation heating function, or a combination is selected to participate in the battery oscillation heating function, and the combination comprises the third phase bridge arm and the third phase motor winding, then: the battery 10, the third phase bridge arm, the third phase motor winding, the switch 50 and the capacitor 40 form a battery oscillation heating circuit; the oscillation heating circuit comprises a battery discharging loop, a motor winding follow current loop, a motor winding energy storage loop and a battery charging loop capacitor 40; the battery 10 discharges to the capacitor 40 and the third-phase motor winding through the upper bridge arm of the third-phase bridge arm and the switch 50 to form a battery discharge loop, the voltage at two ends of the capacitor 40 continuously increases along with the increase of the conduction time of the upper bridge arm of the third-phase bridge arm, the capacitor 40 stores energy, and the battery 10 discharges; the third-phase motor winding forms a motor winding follow current loop through the switch 50, the capacitor 40 and the lower bridge arm follow current of the third-phase bridge arm, the voltage at two ends of the capacitor 40 continues to increase, and meanwhile, the current flowing out of the second end of the third-phase motor winding can be gradually reduced; the capacitor 40 stores energy to the third-phase motor winding through the switch 50 and the lower bridge arm of the third-phase bridge arm to form a motor winding energy storage loop, in the third-phase motor winding follow current loop, when the current flowing out of the second end of the third-phase motor winding is reduced to zero, the voltage at the two ends of the capacitor 40 reaches the maximum, the capacitor 40 can automatically convert the energy received by the third-phase motor winding into energy released to the third-phase motor winding, namely the current direction on the third-phase motor winding starts to be reversed, and meanwhile, the voltage at the two ends of the capacitor 40 can be continuously reduced; the capacitor 40 and the third-phase motor winding discharge to the battery 10 through the switch 50 and the upper bridge arm of the third-phase bridge arm to form a battery charging loop, the capacitor 40 releases energy, the voltage at two ends is continuously reduced, and the battery 10 is charged until the current flowing through the capacitor 40 is gradually reduced to zero.
When the temperature of the third phase arm in the converter 20 and the third phase motor winding in the motor corresponding to the motor winding 30 is below the safe temperature and the use frequency of the third phase arm in the converter 20 is lower than that of the other phase arms, or the battery oscillating heating power is at the first preset value (the battery oscillating heating power at the first preset value means that the battery oscillating heating power requirement can be met only by one phase arm participating in the battery oscillating heating function), the third phase arm and the third phase motor winding can be selected to participate in the battery oscillating heating function, so that the purposes of meeting the battery oscillating heating function requirement and protecting the whole battery oscillating heating device 100 are achieved.
When one bridge arm and one phase motor winding connected with the bridge arm cannot meet the requirement of the battery oscillation heating power, two bridge arms in the battery oscillation heating device 100 and two phase motor windings 30 connected with the two bridge arms can be selected.
If a first phase bridge arm, a second phase bridge arm, a first phase motor winding and a second phase motor winding are selected to participate in the battery oscillation heating function, or a combination is selected to participate in the battery oscillation heating function, and the combination comprises the first phase bridge arm, the second phase bridge arm, the first phase motor winding and the second phase motor winding, then: the battery 10, the first phase bridge arm, the second phase bridge arm, the first phase motor winding, the second phase motor winding, the switch 50 and the capacitor 40 form a battery oscillation heating circuit; the oscillation heating circuit comprises a battery discharging circuit, a motor winding follow current circuit, a motor winding energy storage circuit and a battery charging circuit; the battery 10 discharges to the capacitor 40 and the first-phase motor winding through the upper bridge arm of the first-phase bridge arm and the switch 50, and the battery 10 discharges to the capacitor 40 and the second-phase motor winding through the upper bridge arm of the second-phase bridge arm and the switch 50 to form a battery discharge loop, wherein along with the increase of the conduction time of the upper bridge arm of the first-phase bridge arm and the upper bridge arm of the second-phase bridge arm, the voltage at two ends of the capacitor 40 is continuously increased, the capacitor 40 stores energy, and the battery 10 discharges; the first-phase motor winding forms a motor winding follow current loop through the switch 50, the capacitor 40 and the lower bridge arm follow current of the first-phase bridge arm, and the second-phase motor winding forms a motor winding follow current loop through the switch 50, the capacitor 40 and the lower bridge arm follow current of the second-phase bridge arm, the voltage at two ends of the capacitor 40 continues to increase, and meanwhile, the currents flowing out of the second end of the first-phase motor winding and the second end of the second-phase motor winding gradually decrease; the capacitor 40 stores energy to the first-phase motor winding through the switch 50 and the lower bridge arm of the first-phase bridge arm, and the capacitor 40 stores energy to the second-phase motor winding through the switch 50 and the lower bridge arm of the second-phase bridge arm to form a motor winding energy storage loop, in the first-phase motor winding and the second-phase motor winding follow current loop, when currents flowing out of the second end of the first-phase motor winding and the second end of the second-phase motor winding are reduced to zero, the voltage at two ends of the capacitor 40 reaches the maximum, the capacitor 40 can automatically receive the energy of the first-phase motor winding and the second-phase motor winding and convert the energy into energy released to the first-phase motor winding and the second-phase motor winding, namely, the current directions on the first-phase motor winding and the second-phase motor winding start to reverse, and meanwhile, the voltages at two ends of the capacitor 40 can be continuously; the capacitor 40 and the first-phase motor winding discharge to the battery 10 through the switch 50 and the upper bridge arm of the first-phase bridge arm, and the capacitor 40 and the second-phase motor winding discharge to the battery 10 through the switch 50 and the upper bridge arm of the second-phase bridge arm to form a battery charging loop, the capacitor 40 releases energy, the voltage at two ends is continuously reduced, and the battery 10 is charged until the current flowing through the capacitor 40 is gradually reduced to zero.
When the temperatures of the first-phase motor winding and the second-phase motor winding in the motor corresponding to the first-phase arm, the second-phase arm, and the motor winding 30 in the converter 20 are lower than the safe temperature and the frequencies of use of the first-phase arm and the second-phase arm in the converter 20 are lower than those of the other-phase arms, or the battery oscillation heating power is in a second preset value (the battery oscillation heating power in the second preset value means that the battery oscillation heating power requirement can be met only by the two-phase bridge arm participating in the battery oscillation heating function), the first phase bridge arm, the second phase bridge arm, the first phase motor winding and the second phase motor winding 30 can be selected to participate in the battery oscillation heating function, the adjustable current flowing through the battery is larger than that of only one-phase bridge arm and one-phase motor winding, the battery can realize larger current charging and discharging, the purpose of satisfying the requirement of the battery oscillation heating function and protecting the whole battery oscillation heating device 100 can be achieved.
If a second phase bridge arm, a third phase bridge arm, a second phase motor winding and a third phase motor winding are selected to participate in the battery oscillation heating function, or a combination is selected to participate in the battery oscillation heating function, and the combination comprises the second phase bridge arm, the third phase bridge arm, the second phase motor winding and the third phase motor winding, then: the battery 10, the second phase bridge arm, the third phase bridge arm, the second phase motor winding, the third phase motor winding, the switch 50 and the capacitor 40 form a battery oscillation heating circuit; the oscillation heating circuit comprises a battery discharging circuit, a motor winding follow current circuit, a motor winding energy storage circuit and a battery charging circuit; the battery 10 discharges to the capacitor 40 and the second-phase motor winding through the upper bridge arm of the second-phase bridge arm and the switch 50, and the battery 10 discharges to the capacitor 40 and the third-phase motor winding through the upper bridge arm of the third-phase bridge arm and the switch 50 to form a battery discharge loop, as the conduction time of the upper bridge arm of the second-phase bridge arm and the upper bridge arm of the third-phase bridge arm increases, the voltage at two ends of the capacitor 40 continuously increases, the capacitor 40 stores energy, and the battery 10 discharges; the second-phase motor winding forms a motor winding follow current loop through the switch 50, the capacitor 40 and the lower bridge arm follow current of the second-phase bridge arm, and the third-phase motor winding forms a motor winding follow current loop through the switch 50, the capacitor 40 and the lower bridge arm follow current of the third-phase bridge arm, the voltage at two ends of the capacitor 40 continues to increase, and meanwhile, the currents flowing out of the second end of the second-phase motor winding and the second end of the third-phase motor winding gradually decrease; the capacitor 40 stores energy to the second-phase motor winding through the switch 50 and the lower arm of the second-phase arm and the capacitor 40 stores energy to the third-phase motor winding through the switch 50 and the lower arm of the third-phase arm to form a motor winding energy storage loop, in the second-phase motor winding and the third-phase motor winding freewheeling loop, when the current flowing out of the second end of the second-phase motor winding and the second end of the third-phase motor winding is reduced to zero, the voltage at the two ends of the capacitor 40 reaches the maximum, the capacitor 40 can automatically convert the energy received by the second-phase motor winding and the third-phase motor winding into energy released by the second-phase motor winding and the third-phase motor winding, namely, the current directions on the second-phase motor winding and the third-phase motor winding start to reverse, and meanwhile, the voltage at the two ends; the capacitor 40 and the second-phase motor winding are discharged to the battery 10 through the switch 50 and the upper bridge arm of the second-phase bridge arm, and the capacitor 40 and the third-phase motor winding are discharged to the battery 10 through the switch 50 and the upper bridge arm of the third-phase bridge arm to form a battery charging loop, the capacitor 40 releases energy, the voltage at two ends is continuously reduced, the battery 10 is charged, and the current flowing through the capacitor 40 is gradually reduced to zero.
When the temperatures of the second phase motor winding and the third phase motor winding in the motor corresponding to the second phase arm and the third phase arm in the converter 20 and the motor winding are below the safe temperature, and the use frequencies of the second phase arm and the third phase arm in the converter 20 are lower than those of the other phase arms, or the battery oscillation heating power is in a second preset value (the battery oscillation heating power in the second preset value means that the battery oscillation heating power requirement can be met only by the participation of the two-phase bridge arm in the battery oscillation heating function), the battery oscillation heating power can be obtained by selecting the second phase bridge arm, the third phase bridge arm, the second phase motor winding and the third phase motor winding to participate in the battery oscillation heating function, the adjustable current flowing through the battery is larger than that of only one-phase bridge arm and one-phase motor winding, the battery can realize larger current charging and discharging, the purpose of satisfying the requirement of the battery oscillation heating function and protecting the whole battery oscillation heating device 100 can be achieved.
If a third phase bridge arm, a first phase bridge arm, a third phase motor winding and a first phase motor winding are selected to participate in the battery oscillation heating function, or a combination is selected to participate in the battery oscillation heating function, and the combination comprises the third phase bridge arm, the first phase bridge arm, the third phase motor winding and the first phase motor winding, then: the battery 10, the third phase bridge arm, the first phase bridge arm, the third phase motor winding, the first phase motor winding, the switch 50 and the capacitor 40 form a battery oscillation heating circuit; the oscillation heating circuit comprises a battery discharging circuit, a motor winding follow current circuit, a motor winding energy storage circuit and a battery charging circuit; the battery 10 discharges to the capacitor 40 and the third-phase motor winding through the upper bridge arm of the third-phase bridge arm and the switch 50, and the battery 10 discharges to the capacitor 40 and the first-phase motor winding through the upper bridge arm of the first-phase bridge arm and the switch 50 to form a battery discharge loop; the third-phase motor winding forms a motor winding follow current loop through the switch 50, the capacitor 40 and the lower bridge arm follow current of the third-phase bridge arm and the first-phase motor winding forms a motor winding follow current loop through the switch 50, the capacitor 40 and the lower bridge arm follow current of the first-phase bridge arm, the voltage at two ends of the capacitor 40 continues to increase, and meanwhile, the currents flowing out of the second end of the first-phase motor winding and the second end of the third-phase motor winding gradually decrease; the capacitor 40 stores energy to the third-phase motor winding through the switch 50 and the lower arm of the third-phase arm, and the capacitor 40 stores energy to the first-phase motor winding through the switch 50 and the lower arm of the first-phase arm to form a motor winding energy storage loop, in the first-phase motor winding and the third-phase motor winding follow current loop, when currents flowing out of the second end of the first-phase motor winding and the second end of the third-phase motor winding are reduced to zero, the voltage at two ends of the capacitor 40 reaches the maximum, the capacitor 40 can automatically receive the energy of the first-phase motor winding and the energy of the third-phase motor winding and convert the energy into energy released to the first-phase motor winding and the third-phase motor winding, namely the current directions on the first-phase motor winding and the third-phase motor winding start to reverse, and meanwhile, the voltages at two ends of the capacitor 40 can be continuously reduced; the capacitor 40 and the third-phase motor winding are discharged to the battery 10 through the switch 50 and the upper bridge arm of the third-phase bridge arm, and the capacitor 40 and the first-phase motor winding are discharged to the battery 10 through the switch 50 and the upper bridge arm of the first-phase bridge arm to form a battery charging loop, the capacitor 40 releases energy, the voltage at two ends is continuously reduced, the battery 10 is charged, and the current flowing through the capacitor 40 is gradually reduced to zero.
When the temperatures of the first-phase motor winding and the third-phase motor winding in the motor corresponding to the first-phase arm, the third-phase arm, and the motor winding in the inverter 20 are lower than the safe temperature, and the frequencies of use of the first-phase arm and the third-phase arm in the inverter 20 are lower than those of the other-phase arms, or the battery oscillation heating power is in a second preset value (the battery oscillation heating power in the second preset value means that the battery oscillation heating power requirement can be met only by the two-phase bridge arm participating in the battery oscillation heating function), the first phase bridge arm, the third phase bridge arm, the first phase motor winding and the third phase motor winding can be selected to participate in the battery oscillation heating function, the adjustable current flowing through the battery is larger than that of only one-phase bridge arm and one-phase motor winding, the battery can realize larger current charging and discharging, the purpose of satisfying the requirement of the battery oscillation heating function and protecting the whole battery oscillation heating device 100 can be achieved.
When the two bridge arms and the two-phase motor winding 30 connected with the bridge arms cannot meet the requirement of the battery oscillation heating power, three bridge arms and the two-phase motor winding 30 connected with the three bridge arms in the battery oscillation heating device 100 of the present application can be selected.
If a first phase bridge arm, a second phase bridge arm, a third phase bridge arm, a first phase motor winding, a second phase motor winding and a third phase motor winding are selected to participate in the battery oscillation heating function, or a combination is selected to participate in the battery oscillation heating function, and the combination comprises the first phase bridge arm, the second phase bridge arm, the third phase bridge arm, the first phase motor winding, the second phase motor winding and the third phase motor winding, then: the battery 10, the first phase bridge arm, the second phase bridge arm, the third phase bridge arm, the first phase motor winding, the second phase motor winding, the third phase motor winding, the switch 50 and the capacitor 40 form a battery oscillation heating circuit; the oscillation heating circuit comprises a battery discharging circuit, a motor winding follow current circuit, a motor winding energy storage circuit and a battery charging circuit; the battery 10 discharges to the capacitor 40 and the first-phase motor winding through the upper bridge arm of the first-phase bridge arm and the switch 50, the battery 10 discharges to the capacitor 40 and the second-phase motor winding through the upper bridge arm of the second-phase bridge arm and the switch 50, and the battery 10 discharges to the capacitor 40 and the third-phase motor winding through the upper bridge arm of the third-phase bridge arm and the switch 50 to form a battery discharge loop, wherein along with the increase of the conduction time of the upper bridge arm of the first-phase bridge arm, the upper bridge arm of the second-phase bridge arm and the upper bridge arm of the third-phase bridge arm, the voltage at two ends of the capacitor 40 is continuously increased, the capacitor 40 stores energy, and the battery; a first-phase motor winding continues current through a switch 50, a capacitor 40 and a lower bridge arm of a first-phase bridge arm, a second-phase motor winding continues current through the switch 50, the capacitor 40 and the lower bridge arm of a second-phase bridge arm, and a third-phase motor winding continues current through the switch 50, the capacitor 40 and the lower bridge arm of a third-phase bridge arm to form a motor winding follow current loop, the voltage at two ends of the capacitor 40 continues to increase, and meanwhile, currents flowing out of a second end of the first-phase motor winding, a second end of the second-phase motor winding and a second end of the third-phase motor winding can be gradually reduced; the capacitor 40 stores energy to the first-phase motor winding through the switch 50 and the lower arm of the first-phase arm, the capacitor 40 stores energy to the second-phase motor winding through the switch 50 and the lower arm of the second-phase arm, and the capacitor 40 stores energy to the third-phase motor winding through the switch 50 and the lower arm of the third-phase arm to form a motor winding energy storage loop, in the first-phase motor winding, the second-phase motor winding and the third-phase motor winding follow current loop, when currents flowing out of the second end of the first-phase motor winding, the second end of the second-phase motor winding and the second end of the third-phase motor winding are reduced to zero, the voltage of the two ends of the capacitor 40 reaches the maximum, the capacitor 40 automatically receives the energy of the first-phase motor winding, the second-phase motor winding and the third-phase motor winding and converts the energy into the energy released to the first-phase motor winding, the second-phase motor winding and the third-phase motor winding, namely the energy release of, The direction of the current on the second phase motor winding and the third phase motor winding starts to reverse, and simultaneously the voltage at the two ends of the capacitor 40 is continuously reduced; the capacitor 40 and the first-phase motor winding are discharged to the battery 10 through the switch 50 and the upper arm of the first-phase arm, the capacitor 40 and the second-phase motor winding are discharged to the battery 10 through the switch 50 and the upper arm of the second-phase arm, and the capacitor 40 and the third-phase motor winding are discharged to the battery 10 through the switch 50 and the upper arm of the third-phase arm to form a battery charging loop.
The temperatures of the first phase motor winding, the second phase motor winding and the third phase motor winding in the motor corresponding to the first phase bridge arm, the second phase bridge arm and the third phase bridge arm in the conversion device 20 and the motor winding 30 are below the safe temperature, or the battery oscillation heating power is in a third preset value (the battery oscillation heating power in the third preset value means that the battery oscillation heating power requirement can be met by needing the three-phase bridge arm to participate in the battery oscillation heating function), the battery oscillation heating power can be obtained by selecting the first phase bridge arm, the second phase bridge arm, the third phase bridge arm, the first phase motor winding, the second phase motor winding and the third phase motor winding to participate in the battery oscillation heating function, the adjustable current flowing through the battery is larger than that of only two-phase bridge arms and two-phase motor windings, the battery can realize large-current charging and discharging, the purpose of satisfying the requirement of the battery oscillation heating function and protecting the whole battery oscillation heating device 100 can be achieved.
The present application further provides a vehicle, as shown in fig. 6, including a battery 10, and further including the battery oscillating heating device 100 in any of the above embodiments.
In the vehicle provided by the present application, including the battery oscillation heating apparatus 100 in any of the above embodiments, by designing a new circuit topology connected to the battery 10 and including the arm converter 20, the motor winding 30, and the capacitor 40, specifically, the capacitor 40 is connected to the second end of the motor winding 30 and the second bus end of the arm converter 20, and the arm converter 20 is connected to the battery 10 and the motor winding 30, respectively, based on the circuit topology, when the controllable element converter 20 is controlled, the battery 10, the motor winding 30, and the capacitor 40 form different loops, so that the battery 10 and the capacitor 40 perform energy exchange, that is, currents flowing through the battery 10 are different in the different loops, and further, an oscillating current is formed on the battery 10, and heat is generated by internal resistance of the battery 10, thereby heating the battery 10.
In addition, in a preferred embodiment of the present application, the motor winding 30 may be a motor winding of a driving motor of a vehicle, that is, the driving motor provides driving force for vehicle running, and accordingly, the converting device 20 may be a converting device of the driving motor. That is, the battery oscillation heating apparatus 100 according to the present invention performs the battery oscillation heating process by multiplexing the driving motor of the vehicle. Because the power of driving motor is great, consequently, in the heating process, corresponding heating power is also great to can promote heating rate, improve heating efficiency. In addition, the existing driving motor on the vehicle is reused, and a special motor is not required to be additionally provided, so that the utilization rate of devices in the vehicle can be improved, the occupation of the vehicle space is reduced, the vehicle weight is reduced, the whole vehicle cost is reduced, and the popularization of new energy automobiles is facilitated.
Furthermore, in another preferred embodiment of the present application, the motor winding 30 may be a motor winding of a compressor of a vehicle, that is, the compressor provides a driving force for an air conditioning system of the vehicle, and accordingly, the inverter 20 may be an inverter of the compressor. That is, the battery oscillation heating apparatus 100 according to the present invention can realize the driving heating of the vehicle by performing the battery oscillation heating process in combination with the compressor of the vehicle. In addition, the existing compressor on the vehicle is reused, and a special motor is not required to be additionally provided, so that the utilization rate of devices in the vehicle can be improved, the occupation of the vehicle space is reduced, the vehicle weight is reduced, the whole vehicle cost is reduced, and the popularization of new energy automobiles is facilitated.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (12)
1. A battery oscillating heating device, comprising:
the first junction end of the conversion device is connected with the positive pole of the battery, and the second junction end of the conversion device is connected with the negative pole of the battery;
the first end of the motor winding is connected with the conversion device;
and the first end of the capacitor is connected with the second end of the motor winding, and the second end of the capacitor is connected with the second bus end of the conversion device.
2. The battery oscillating heater apparatus of claim 1, further comprising a switch, a first end of said switch being connected to a second end of said motor winding, a second end of said switch being connected to a first end of said capacitor;
the battery, the conversion device and the motor winding form a motor driving circuit; the battery, the conversion device, the motor winding, the switch and the capacitor form a battery oscillation heating circuit.
3. The battery oscillating heater of claim 2, wherein the first end of the switch is spaced from the second end of the motor winding by a distance L1, the second end of the motor winding is spaced from the first end of the capacitor by a distance L2, L1 < L2.
4. A battery oscillating heater apparatus as set forth in claim 2, wherein said switch is disposed in a housing of the motor corresponding to said motor winding.
5. The battery oscillating heater apparatus of claim 1, further comprising a switch, a first terminal of the switch being connected to a first terminal of the capacitor, a second terminal of the switch being connected to a second bus of the inverter;
the battery, the conversion device and the motor winding form a motor driving circuit; the battery, the conversion device, the motor winding, the switch and the capacitor form a battery oscillation heating circuit.
6. A battery heating apparatus as claimed in any of claims 2 to 5, wherein the battery heating circuit comprises a battery discharge circuit, a motor winding freewheel circuit, a motor winding tank circuit and a battery charging circuit;
the battery discharges to the motor winding and the capacitor through an upper bridge arm of the conversion device and the switch to form a battery discharge loop;
the motor winding forms a follow current loop of the motor winding through the switch, the capacitor and the lower bridge arm follow current of the conversion device;
the capacitor stores energy to the motor winding through the switch and a lower bridge arm of the conversion device to form a motor winding energy storage loop;
and the capacitor and the motor winding discharge to the battery through the switch and an upper bridge arm of the conversion device to form the battery charging loop.
7. A battery oscillating heating device according to any one of claims 2 to 5, characterised in that said transformation means comprises a first phase leg, a second phase leg and a third phase leg, said motor windings comprising a first phase motor winding, a second phase motor winding and a third phase motor winding;
the first end of the first phase bridge arm, the first end of the second phase bridge arm and the first end of the third phase bridge arm are connected together to form a first bus end of the conversion device, and the second end of the first phase bridge arm, the second end of the second phase bridge arm and the second end of the third phase bridge arm are connected together to form a second bus end of the conversion device;
the first end of the first-phase motor winding is connected with the midpoint of the first-phase bridge arm, the first end of the second-phase motor winding is connected with the midpoint of the second-phase bridge arm, the first end of the third-phase motor winding is connected with the midpoint of the third-phase bridge arm, and the first end of the motor winding is formed by the first end of the first-phase motor winding, the first end of the second-phase motor winding and the first end of the third-phase motor winding; and the second end of the first phase motor winding, the second end of the second phase motor winding and the second end of the third phase motor winding are connected together to form the second end of the motor winding.
8. The battery oscillating heating device of claim 7, wherein the oscillating heating circuit comprises a battery discharge circuit, a motor winding freewheel circuit, a motor winding tank circuit, and a battery charging circuit;
the battery, the first phase bridge arm, the first phase motor winding, the switch and the capacitor form the battery oscillation heating circuit; the battery discharges to the capacitor and the first-phase motor winding through the upper bridge arm of the first-phase bridge arm and the switch to form a battery discharge loop; the first-phase motor winding forms a motor winding follow current loop through the switch, the capacitor and the lower bridge arm follow current of the first-phase bridge arm; the capacitor stores energy to the first-phase motor winding through the switch and the lower bridge arm of the first-phase bridge arm to form the motor winding energy storage loop; the capacitor and the first-phase motor winding discharge to the battery through the switch and the upper bridge arm of the first-phase bridge arm to form the battery charging loop; alternatively, the first and second electrodes may be,
the battery, the second-phase bridge arm, the second-phase motor winding, the switch and the capacitor form the battery oscillation heating circuit; the battery discharges to the capacitor and the second-phase motor winding through the upper bridge arm of the second-phase bridge arm and the switch to form a battery discharge loop; the second-phase motor winding forms a motor winding follow current loop through the switch, the capacitor and the lower bridge arm follow current of the second-phase bridge arm; the capacitor stores energy to the second-phase motor winding through the switch and the lower bridge arm of the second-phase bridge arm to form the motor winding energy storage loop; the capacitor and the second-phase motor winding discharge to the battery through the switch and an upper bridge arm of the second-phase bridge arm to form the battery charging loop; alternatively, the first and second electrodes may be,
the battery, the third phase bridge arm, the third phase motor winding, the switch and the capacitor form the battery oscillation heating circuit; the battery discharges to the capacitor and the third-phase motor winding through the upper bridge arm of the third-phase bridge arm and the switch to form a battery discharge loop; the third-phase motor winding forms a motor winding follow current loop through the switch, the capacitor and the lower bridge arm follow current of the third-phase bridge arm; the capacitor stores energy to the third-phase motor winding through the switch and the lower bridge arm of the third-phase bridge arm to form the motor winding energy storage loop; and the capacitor and the third-phase motor winding discharge to the battery through the switch and the upper bridge arm of the third-phase bridge arm to form the battery charging loop.
9. The battery oscillating heating device of claim 7, wherein the oscillating heating circuit comprises a battery discharge circuit, a motor winding freewheel circuit, a motor winding tank circuit, and a battery charging circuit;
the battery, the first phase bridge arm, the second phase bridge arm, the first phase motor winding, the second phase motor winding, the switch and the capacitor form a battery oscillation heating circuit; the battery discharges to the capacitor and the first-phase motor winding through the upper bridge arm of the first-phase bridge arm and the switch, and the battery discharges to the capacitor and the second-phase motor winding through the upper bridge arm of the second-phase bridge arm and the switch to form a battery discharge loop; the first-phase motor winding forms a motor winding follow current loop through the switch, the capacitor and the lower bridge arm follow current of the first-phase bridge arm, and the second-phase motor winding forms a motor winding follow current loop through the switch, the capacitor and the lower bridge arm follow current of the second-phase bridge arm; the capacitor stores energy to the first-phase motor winding through the switch and the lower bridge arm of the first-phase bridge arm, and the capacitor stores energy to the second-phase motor winding through the switch and the lower bridge arm of the second-phase bridge arm to form the motor winding energy storage loop; the capacitor and the first-phase motor winding are discharged to the battery through the switch and the upper bridge arm of the first-phase bridge arm, and the capacitor and the second-phase motor winding are discharged to the battery through the switch and the upper bridge arm of the second-phase bridge arm to form the battery charging loop; alternatively, the first and second electrodes may be,
the battery, the second phase bridge arm, the third phase bridge arm, the second phase motor winding, the third phase motor winding, the switch and the capacitor form a battery oscillation heating circuit; the battery discharges to the capacitor and the second-phase motor winding through the upper bridge arm of the second-phase bridge arm and the switch, and the battery discharges to the capacitor and the third-phase motor winding through the upper bridge arm of the third-phase bridge arm and the switch to form a battery discharge loop; the second-phase motor winding forms a motor winding follow current loop through the switch, the capacitor and the lower bridge arm follow current of the second-phase bridge arm, and the third-phase motor winding forms the motor winding follow current loop through the switch, the capacitor and the lower bridge arm follow current of the third-phase bridge arm; the capacitor stores energy to the second-phase motor winding through the switch and the lower bridge arm of the second-phase bridge arm, and the capacitor stores energy to the third-phase motor winding through the switch and the lower bridge arm of the third-phase bridge arm to form the motor winding energy storage loop; the capacitor and the second-phase motor winding are discharged to the battery through the switch and the upper bridge arm of the second-phase bridge arm, and the capacitor and the third-phase motor winding are discharged to the battery through the switch and the upper bridge arm of the third-phase bridge arm to form the battery charging loop; alternatively, the first and second electrodes may be,
the battery, the third phase bridge arm, the first phase bridge arm, the third phase motor winding, the first phase motor winding, the switch and the capacitor form a battery oscillation heating circuit; the battery discharges to the capacitor and the third-phase motor winding through the upper bridge arm of the third-phase bridge arm and the switch, and the battery discharges to the capacitor and the first-phase motor winding through the upper bridge arm of the first-phase bridge arm and the switch to form a battery discharge loop; the third-phase motor winding forms a motor winding follow current loop through the switch, the capacitor and the lower bridge arm follow current of the third-phase bridge arm, and the first-phase motor winding forms the motor winding follow current loop through the switch, the capacitor and the lower bridge arm follow current of the first-phase bridge arm; the capacitor stores energy to the third-phase motor winding through the switch and the lower bridge arm of the third-phase bridge arm, and the capacitor stores energy to the first-phase motor winding through the switch and the lower bridge arm of the first-phase bridge arm to form the motor winding energy storage loop; the capacitor and the third-phase motor winding are discharged to the battery through the switch and the upper bridge arm of the third-phase bridge arm, and the capacitor and the first-phase motor winding are discharged to the battery through the switch and the upper bridge arm of the first-phase bridge arm to form the battery charging loop.
10. The battery oscillating heating device of claim 7, wherein the oscillating heating circuit comprises a battery discharge circuit, a motor winding freewheel circuit, a motor winding tank circuit, and a battery charging circuit;
the battery, the first phase bridge arm, the second phase bridge arm, the third phase bridge arm, the first phase motor winding, the second phase motor winding, the third phase motor winding, the switch and the capacitor form a battery oscillation heating circuit; the battery discharges to the capacitor and the first-phase motor winding through the upper bridge arm of the first-phase bridge arm and the switch, the battery discharges to the capacitor and the second-phase motor winding through the upper bridge arm of the second-phase bridge arm and the switch, and the battery discharges to the capacitor and the third-phase motor winding through the upper bridge arm of the third-phase bridge arm and the switch to form the battery discharge loop; the first-phase motor winding continues current through the switch, the capacitor and the lower bridge arm of the first-phase bridge arm, the second-phase motor winding continues current through the switch, the capacitor and the lower bridge arm of the second-phase bridge arm, and the third-phase motor winding forms a motor winding follow current loop through the switch, the capacitor and the lower bridge arm of the third-phase bridge arm; the capacitor stores energy to the first-phase motor winding through the switch and the lower bridge arm of the first-phase bridge arm, the capacitor stores energy to the second-phase motor winding through the switch and the lower bridge arm of the second-phase bridge arm, and the capacitor stores energy to the third-phase motor winding through the switch and the lower bridge arm of the third-phase bridge arm to form the motor winding energy storage loop; the capacitor and the first-phase motor winding are discharged to the battery through the switch and the upper bridge arm of the first-phase bridge arm, the capacitor and the second-phase motor winding are discharged to the battery through the switch and the upper bridge arm of the second-phase bridge arm, and the capacitor and the third-phase motor winding are discharged to the battery through the switch and the upper bridge arm of the third-phase bridge arm to form the battery charging loop.
11. A vehicle comprising a battery, characterized by further comprising the battery oscillation heating apparatus of any one of claims 1 to 10.
12. The vehicle of claim 11, characterized in that the motor winding is a motor winding in a drive motor in the vehicle or a motor winding in a compressor in the vehicle.
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| CN202021026211.XU CN213026264U (en) | 2020-06-04 | 2020-06-04 | Battery oscillation heating device and vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114537226A (en) * | 2022-03-07 | 2022-05-27 | 臻驱科技（上海）有限公司 | Power assembly circuit of electric automobile and power battery heating method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114537226A (en) * | 2022-03-07 | 2022-05-27 | 臻驱科技（上海）有限公司 | Power assembly circuit of electric automobile and power battery heating method |
| CN114537226B (en) * | 2022-03-07 | 2023-11-07 | 臻驱科技（上海）有限公司 | Power assembly circuit of electric automobile and power battery heating method |
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