CN218463475U - Electric automobile and energy recovery device thereof - Google Patents
Electric automobile and energy recovery device thereof Download PDFInfo
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- CN218463475U CN218463475U CN202222746138.9U CN202222746138U CN218463475U CN 218463475 U CN218463475 U CN 218463475U CN 202222746138 U CN202222746138 U CN 202222746138U CN 218463475 U CN218463475 U CN 218463475U
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- 238000011084 recovery Methods 0.000 title claims abstract description 57
- 238000004146 energy storage Methods 0.000 claims abstract description 302
- 230000005611 electricity Effects 0.000 claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims description 65
- 238000001816 cooling Methods 0.000 claims description 54
- 239000007788 liquid Substances 0.000 claims description 4
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- 239000002699 waste material Substances 0.000 description 6
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- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 3
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- 238000011161 development Methods 0.000 description 2
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
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- 229910052759 nickel Inorganic materials 0.000 description 1
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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
Abstract
The utility model discloses an electric automobile and energy recuperation device thereof. An energy recovery device for an electric vehicle includes: the power energy storage module, the redundant energy storage module, the feedback module, the first switch module, the electricity utilization module and the control module. The feedback module is used for generating feedback electric energy according to the kinetic energy of the electric automobile under the braking condition; the power energy storage module is connected with the feedback module and used for storing feedback electric energy and providing electric energy for a power system of the electric automobile; the redundant energy storage module is connected with the feedback module through the first switch module and is also connected with the power utilization module, the redundant energy storage module is used for storing feedback electric energy and supplying power to the power utilization module, and the power utilization module comprises at least one of a heat management assembly, a lighting assembly and a wiper assembly; the control module is respectively connected with the control end of the first switch module and the power energy storage module, and the control module is used for controlling the on-off of the first switch module according to the electric quantity of the power energy storage module. The utility model provides the high utilization ratio of repayment electric energy.
Description
Technical Field
The utility model relates to an electric automobile control technology especially relates to an electric automobile and energy recuperation device thereof.
Background
With the development of the new energy automobile industry, the usage amount of new energy automobiles is larger and larger. The electric quantity of the new energy automobile cannot meet the requirement of people on long-distance travel, and especially for a pure electric automobile, the restriction of the battery electric quantity on the industry development is more prominent.
Under the condition that the electric quantity of the electric automobile is insufficient, the braking energy recovery can be used as an important supplementary source of the electric quantity.
However, in the prior art, when a battery of an electric vehicle is fully charged, the feedback electric quantity of recovered braking energy is very small, thereby causing energy waste.
SUMMERY OF THE UTILITY MODEL
The utility model provides an electric automobile and energy recuperation device thereof to the realization improves the utilization ratio of repayment electric energy.
In a first aspect, an embodiment of the present invention provides an energy recovery device for an electric vehicle, the energy recovery device includes: the energy-saving control system comprises a power energy storage module, a redundant energy storage module, a feedback module, a first switch module, an electricity utilization module and a control module;
the feedback module is used for generating feedback electric energy according to the kinetic energy of the electric automobile under the braking condition;
the power energy storage module is connected with the feedback module and used for storing the feedback electric energy and providing electric energy for a power system of the electric automobile;
the redundant energy storage module is connected with the feedback module through the first switch module, and is also connected with the power utilization module, the redundant energy storage module is used for storing the feedback electric energy and supplying power to the power utilization module, and the power utilization module comprises at least one of a heat management assembly, a lighting assembly and a wiper assembly;
the control module is respectively connected with the control end of the first switch module and the power energy storage module, and the control module is used for controlling the on-off of the first switch module according to the electric quantity of the power energy storage module.
Optionally, the energy recovery device of the electric vehicle further includes: the second switch module is connected between the power energy storage module and the feedback module;
the power energy storage module is provided with a preset first electric quantity interval; the control module is connected with the control end of the second switch module, and the control module is further used for controlling the first switch module to be switched on and controlling the second switch module to be switched off when the electric quantity of the power energy storage module is detected to be within the first electric quantity interval.
Optionally, the energy recovery apparatus of an electric vehicle further includes: the power energy storage module is connected with the power utilization module through the fourth switch module; the control module is respectively connected with the control end of the third switch module and the control end of the fourth switch module, and the control module is further used for controlling the on-off of the third switch module and the fourth switch module according to the electric quantity information of the power energy storage module and the redundant energy storage module so as to switch at least one of the power energy storage module and the redundant energy storage module to supply power for the power utilization module.
Optionally, the energy recovery device of the electric vehicle further includes: the first end of the fifth switch module is connected with the power energy storage module, the second end of the fifth switch module is respectively connected with the electricity utilization module and the redundant energy storage module, the control module is further connected with the control end of the fifth switch module, and the control module is further used for controlling the fifth switch module to be switched on and off according to the electric quantity of the redundant energy storage module.
Optionally, the energy recovery apparatus of the electric vehicle further includes: the first end of the sixth switch module is connected with the second end of the fifth switch module, the second end of the sixth switch module is connected with the power utilization module, the control module is further connected with the control end of the sixth switch module, and the control module is further used for controlling the on-off of the sixth switch module.
Optionally, the thermal management assembly comprises a heating unit and a cooling unit, the heating unit and the cooling unit are both arranged on the power energy storage module, the heating unit is used for heating the power energy storage module, and the cooling unit is used for cooling the power energy storage module;
the control module is also used for controlling the on-off of the fifth switch module and the sixth switch module according to the temperature data of the power energy storage module.
Optionally, the cooling unit comprises at least one of a liquid cooling element and an air cooling element; the heating unit includes a heating film.
Optionally, the energy recovery device of the electric vehicle further includes a seventh switch module, a first end of the seventh switch module is connected to the power energy storage module, a second end of the seventh switch module is connected to the redundant energy storage module, and a control end of the seventh switch module is connected to the control module;
the redundant energy storage module is provided with a preset second electric quantity interval; the control module is further connected with the redundant energy storage module and is further used for controlling the seventh switch module to be switched on under the condition that the electric quantity of the redundant energy storage module is within the second electric quantity interval, so that the redundant energy storage module is utilized to charge the power energy storage module.
Optionally, the energy recovery device of the electric vehicle further includes a first diode and a second diode, and the first diode is disposed between the redundant energy storage module and the first switch module; the second diode is arranged between the redundant energy storage module and the power utilization module.
In a second aspect, the embodiment of the present invention further provides an electric vehicle, where the electric vehicle includes the first aspect as an option.
The utility model provides an electric automobile and energy recuperation device is provided with power energy storage module, redundant energy storage module, the repayment module, first switch module, power consumption module and control module, the repayment module generates the repayment electric energy under the braking condition, power energy storage module storage repayment electric energy provides the electric energy for driving system, redundant energy storage module storage repayment electric energy is for the power consumption module power supply, control module is detecting power energy storage module under the condition between first electric quantity, first switch module between control redundant energy storage module and the repayment module switches on, make the repayment electric energy save in redundant energy storage module, electric automobile's energy recuperation has been realized, and utilize redundant energy storage module storage repayment electric energy under the condition that power energy storage module is close to full electricity, the waste of energy has been reduced, the utilization ratio of repayment electric energy has been improved.
Drawings
Fig. 1 is a schematic structural diagram of an energy recovery device of an electric vehicle according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another energy recovery device for an electric vehicle according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another energy recovery device for an electric vehicle according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an energy recovery device of another electric vehicle according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an energy recovery device of another electric vehicle according to an embodiment of the present invention;
fig. 6 is a schematic flow chart of a power supply control method of a thermal management assembly according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an energy recovery device of another electric vehicle according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of another energy recovery device for an electric vehicle according to an embodiment of the present invention;
fig. 9 is a schematic flowchart of a control method of an energy recovery device according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of an electric vehicle according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In order to solve the problem that proposes among the background art, the embodiment of the utility model provides an electric automobile's energy recuperation device is provided. Fig. 1 is a schematic structural diagram of an energy recovery device of an electric vehicle according to an embodiment of the present invention, referring to fig. 1, an energy recovery device 100 of an electric vehicle includes: the energy management system comprises a power energy storage module 101, a redundant energy storage module 102, a feedback module 103, a first switch module 104, a power utilization module 105 and a control module 106. The feedback module 103 is configured to generate feedback electric energy according to kinetic energy of the electric vehicle in a braking condition. The power energy storage module 101 is connected to the feedback module 103, and is configured to store feedback electric energy and provide electric energy for a power system of the electric vehicle. The redundant energy storage module 102 is connected with the feedback module 103 through the first switch module 104, the redundant energy storage module 102 is further connected with the power utilization module 105, and the redundant energy storage module 102 is used for storing feedback electric energy and supplying power to the power utilization module 105. The control module 106 is connected to the control end of the first switch module 104 and the power energy storage module 101, and is configured to control the first switch module 104 to be turned on when detecting that the power energy storage module 101 is in the first electric quantity interval.
The power energy storage module 101 refers to an energy storage component for providing power for the power device, and may include a power battery. The redundant energy storage module 102 refers to an energy storage component independent from the power energy storage module 101, and can supply power to the electricity utilization module 105. The feedback module 103 is a power generation device that converts kinetic energy of the electric vehicle into feedback electric energy when the electric vehicle brakes or goes down a slope. The power usage module 105 refers to a low-power electrical appliance on an electric vehicle, and the power usage module 105 may include at least one of a thermal management component, a lighting component, and a wiper component. The control module 106 refers to a general control module 106 of the energy recovery device, and can control the on/off of the first switch module 104 according to the electric quantity of the energy storage module.
Specifically, the power energy storage module 101 may include a power battery, which supplies power to a motor of the electric vehicle. In the case of non-full power of the power energy storage module 101, the power energy storage module 101 may receive and store the feedback electric energy generated by the feedback module 103. Illustratively, the power battery may include at least one of a lead-acid battery, lithium iron phosphate, a nickel-metal hydride battery, a sodium-sulfur battery, a secondary lithium battery, an air battery, and a ternary lithium battery. The redundant energy storage module 102 may include a redundant battery, which may be of a different type than the power cell, and illustratively, the redundant battery may include at least one of a lithium iron phosphate battery and a lithium manganate battery. The redundant energy storage module 102 may provide power to the power utilization module 105 and receive and store feedback power generated by the feedback module 103 when the power energy storage module 101 is fully charged. The feedback module 103 may include an electric machine having a generator function, and the feedback module 103 may be integrated into a powertrain of an electric vehicle, for example. Under the condition of braking or downhill of the electric automobile, the motor can convert part of kinetic energy of the electric automobile into feedback electric energy.
The first switch module 104 includes a first end, a second end, and a control end, the first end of the first switch module 104 is connected to the feedback module 103, the second end of the first switch module 104 is connected to the redundant energy storage module 102, and the control end of the first switch module 104 is connected to the control module 106. The first switch module 104 may control on/off between the first end and the second end according to a signal received by the control end, so as to start or stop the energy storage function of the redundant energy storage module 102. Illustratively, the first switch module 104 may include at least one of a MOS transistor, an IGBT, and a relay. The power usage module 105 may include any power usage on the electric vehicle other than the electric motor, and illustratively, the power usage module 105 may include at least one of a thermal management assembly, a lighting assembly, and a wiper assembly. The control module 106 may be a control chip or a single chip including a battery management system, for example, the control module 106 may be integrated in a vehicle-mounted electronic control unit (also referred to as an ECU or a vehicle computer) of the electric vehicle, the control module 106 is connected to the power energy storage module 101 and the first switch module 104, the control module 106 may control the on/off of the first switch module 104 according to the remaining power of the power energy storage module 101, and may control the first switch module 104 to be turned on under the condition that the power of the power energy storage module 101 is in the first power interval. Illustratively, the first power interval may be greater than 90% of the full power.
For example, in the case that the power energy storage module 101 of the electric vehicle is fully charged and then the electric vehicle is on the road, the electric quantity of the power energy storage module 101 is greater than 90% of the full electric quantity in a period of time immediately after the electric vehicle is started. In such a situation that the power storage module 101 is close to full power, the power storage module 101 has a very weak ability to store feedback power, and at this time, in order to prevent waste of feedback power, the control module 106 controls the first switch module 104 to be turned on. The feedback module 103 transmits the feedback electric energy which cannot be stored in the power energy storage module 101 to the redundant energy storage module 102 until the electric quantity of the power energy storage module 101 is less than or equal to 90% of the full electric quantity. The redundant energy storage module 102 stores back-fed electrical energy and uses the stored electrical energy to power the thermal management assembly, the lighting assembly, and the wiper assembly.
The energy recovery device of the electric vehicle provided by the embodiment is provided with a power energy storage module, a redundant energy storage module, a feedback module, a first switch module, an electricity utilization module and a control module, wherein the feedback module generates feedback electric energy under the braking condition, the power energy storage module stores the feedback electric energy and provides electric energy for a power system, the redundant energy storage module stores the feedback electric energy and supplies power for the electricity utilization module, the control module controls the conduction of the first switch module between the redundant energy storage module and the feedback module under the condition that the power energy storage module is detected to be in a first electric quantity interval, so that the feedback electric energy is stored in the redundant energy storage module, the energy recovery of the electric vehicle is realized, the redundant energy storage module is used for storing the feedback electric energy under the condition that the power energy storage module is close to full charge, the waste of energy is reduced, and the utilization rate of the feedback electric energy is improved.
Optionally, fig. 2 is a schematic structural diagram of another energy recovery device for an electric vehicle according to an embodiment of the present invention, and referring to fig. 2, on the basis of the foregoing embodiment, the energy recovery device 100 for an electric vehicle further includes: and the second switch module 201, the second switch module 201 is connected between the power energy storage module 101 and the feedback module 103. The control module 106 is connected to the control end of the second switch module 201, and the control module 106 is further configured to control the turning off of the line where the second switch module 201 is located when the power energy storage module 101 is detected to be in the first electric quantity interval.
Specifically, a first end of the second switch module 201 is connected to the power energy storage module 101, a second end of the second switch module 201 is connected to the feedback module 103, and a control end of the second switch module 201 is connected to the control module 106. The second switch module 201 can control the on-off between the first end and the second end according to the signal received by the control end, so as to start and stop the energy storage function of the power energy storage module 101. Illustratively, the second switching module 201 may include at least one of a MOS transistor, an IGBT, and a relay.
The control module 106 detects the electric quantity of the power energy storage module 101, and controls the second switch module 201 to be turned off when the electric quantity of the power energy storage module 101 is within the first electric quantity interval, so that the power energy storage module 101 stops storing the feedback electric quantity, and controls the first switch module 104 to be turned on, so that the redundant energy storage module 102 starts storing the feedback electric quantity.
For example, in the case that the power energy storage module 101 of the electric vehicle is fully charged and then the electric vehicle is on the road, the electric quantity of the power energy storage module 101 is greater than 90% of the full electric quantity in a period of time immediately after the electric vehicle is started. In such a situation that the power of the power energy storage module 101 is close to full power, the power energy storage module 101 has a very weak ability to store feedback power, and at this time, in order to prevent waste of feedback power, the control module 106 controls the second switch module 201 to be turned off and controls the first switch module 104 to be turned on. The feedback module 103 transmits the feedback electric energy which cannot be stored by the power energy storage module 101 to the redundant energy storage module 102 until the electric quantity of the power energy storage module 101 is less than or equal to 90% of the full electric quantity. The redundant energy storage module 102 stores back-fed electrical energy and uses the stored electrical energy to power the thermal management assembly, the lighting assembly, and the wiper assembly.
The energy recovery device of the electric vehicle provided by the embodiment is provided with the second switch module, the control module controls the second switch module between the power energy storage module and the feedback module to be turned off when detecting that the power energy storage module is in the first electric quantity interval, and controls the first switch module between the redundant energy storage module and the feedback module to be turned on, so that feedback electric energy is stored in the redundant energy storage module, the energy recovery of the electric vehicle is realized, the energy storage is directly stopped under the condition that the power energy storage module is close to full power, the redundant energy storage module is adopted for replacement, the charging times with low energy storage efficiency of the power energy storage module can be reduced, and the service life of the power energy storage module is prolonged on the basis of improving the storage efficiency of the feedback electric energy.
Optionally, fig. 3 is a schematic structural diagram of another energy recovery device of an electric vehicle according to an embodiment of the present invention, referring to fig. 3, on the basis of the foregoing embodiment, the energy recovery device 100 of an electric vehicle further includes: the power utilization system comprises a third switch module 301 and a fourth switch module 302, wherein the third switch module 301 is connected between the power utilization module 105 and the redundant energy storage module 102, and the power energy storage module 101 is connected with the power utilization module 105 through the fourth switch module 302. The control module 106 is connected with the redundant energy storage module 102, the control end of the third switch module 301 and the control end of the fourth switch module 302, and the control module 106 is further configured to control the on/off of the third switch module 301 and the fourth switch module 302 according to the electric quantity information of the power energy storage module 101 and the redundant energy storage module 102, so as to switch at least one of the power energy storage module 101 and the redundant energy storage module 102 to supply power to the electricity utilization module 105.
The third switching module 301 is a switching component disposed between the power consumption module 105 and the redundant energy storage module 102, and can control the on/off of a line for supplying power to each electrical appliance in the power consumption module 105 by the redundant energy storage module 102. The fourth switch module 302 is a switch component disposed between the power consumption module 105 and the power energy storage module 101, and can control on/off of a line for supplying power to each electrical appliance in the power consumption module 105 by the power energy storage module 101.
Specifically, a first end of the third switching module 301 is connected to the redundant energy storage module 102, a second end of the third switching module 301 is connected to the power utilization module 105, and a control end of the third switching module 301 is connected to the control module 106. The third switching module 301 may control the on/off between the first end and the second end according to a signal received by the control end, so as to start and stop the power supply of the power utilization module 105 by the redundant energy storage module 102. For example, the third switch module 301 may include at least one of a MOS transistor, an IGBT, and a relay, and the switch devices in the third switch module 301 correspond to the number of the electrical consumers in the electrical consumer module 105 one to one, for example, if the electrical consumer module 105 only includes a heating device and a cooling device, then the third switch module 301 includes two relays corresponding to the heating device and the cooling device one to one.
Similar to the third switch module 301, a first end of the fourth switch module 302 is connected to the power energy storage module 101, a second end of the fourth switch module 302 is connected to the power utilization module 105, and a control end of the fourth switch module 302 is connected to the control module 106. The fourth switch module 302 can control the on-off between the first end and the second end according to the signal received by the control end, so as to start and stop the power storage module 101 for supplying power to the power consumption module 105. For example, the fourth switch module 302 may include at least one of a MOS transistor, an IGBT and a relay, and the switch devices in the fourth switch module 302 correspond to the number of the electrical consumers in the electrical consumption module 105 one to one, for example, if the electrical consumption module 105 only includes a heating device and a cooling device, then the fourth switch module 302 includes two relays corresponding to the heating device and the cooling device one to one.
The control module 106 is connected with the power energy storage module 101 and the redundant energy storage module 102 respectively, and can control the third switch module 301 to be turned on and the fourth switch module 302 to be turned off under the condition that the remaining electric quantity of the redundant energy storage module 102 is within the third electric quantity interval, so as to supply power to the electricity utilization module 105 by using the electric quantity of the redundant energy storage module 102. The control module 106 can control the fourth switching module 302 to be turned on (the on/off of the third switching module 301 can be controlled according to the specific electric quantity of the redundant energy storage module 102) under the condition that the remaining electric quantity of the redundant energy storage module 102 is outside the third electric quantity interval, so as to supply power to the electricity utilization module 105 by using the electric quantity of the power energy storage module 101. The third power interval may be obtained according to experiments, and for example, the third power interval may be 20% of the full power.
According to the energy recovery device of the electric automobile, the fourth switch module is arranged between the power energy storage module and the electricity utilization module, the third switch module is arranged between the redundant energy storage module and the electricity utilization module, the control ends of the third switch module and the fourth switch module are connected with the control module and controlled by the control module, the control module can control the on-off states of the third switch module and the fourth switch module according to the electric quantity of the power energy storage module and the redundant energy storage module, and the appropriate energy storage module is switched to supply power to the electricity utilization module, so that the recycling of feedback electric energy is realized, and the power supply reliability of the electricity utilization module is improved.
Optionally, fig. 4 is a schematic structural diagram of another energy recovery device of an electric vehicle according to an embodiment of the present invention, and referring to fig. 4, on the basis of the foregoing embodiment, the energy recovery device 100 of an electric vehicle further includes: the energy-saving control system comprises a fifth switch module 401 and a sixth switch module 402, wherein a first end of the fifth switch module 401 is connected with the power energy storage module 101, a second end of the fifth switch module 401 is respectively connected with the electricity utilization module 105 and the redundant energy storage module 102, the control module 106 is further connected with a control end of the fifth switch module 401, and the control module 106 is further used for controlling the on-off of the fifth switch module 401. The first end of the sixth switch module 402 is connected to the second end of the fifth switch module 401, the second end of the sixth switch module 402 is connected to the power utilization module 105, the control module 106 is further connected to the control end of the sixth switch module 402, and the control module 106 is further configured to control on/off of the sixth switch module 402.
The fifth switch module 401 and the sixth switch module 402 are two sets of switch assemblies sequentially and serially arranged between the power energy storage module and the electricity utilization module 105, the fifth switch module 401 can control on/off of a line for supplying power to each electric appliance in the electricity utilization module 105 by the power energy storage module 101, and the sixth switch module 402 can control on/off of a total power supply path for supplying power to the electricity utilization module 105 by the power energy storage module 101 and the redundant energy storage module 102.
The fifth switch module 401 and the sixth switch module 402 may each include at least one of a MOS transistor, an IGBT, and a relay, and the number of the switch devices in the fifth switch module 401 and the number of the switch devices in the sixth switch module 402 correspond to the number of the electrical appliances in the electrical module 105 one to one, for example, the electrical module 105 only includes a heating device and a cooling device, and the fifth switch module 401 and the sixth switch module 402 each include two relays corresponding to the heating device and the cooling device one to one.
Exemplarily, fig. 5 is a schematic structural diagram of another energy recovery device for an electric vehicle according to an embodiment of the present invention, referring to fig. 5, the power utilization module 105 includes a thermal management component (not shown in the figure), the thermal management component includes a heating unit 501 and a cooling unit 502, the heating unit 501 and the cooling unit 502 are both disposed on the power energy storage module 101, the heating unit 501 is used for heating the power energy storage module 101, and the cooling unit 502 is used for cooling the power energy storage module 101; the control module 106 is further configured to control on/off of the sixth switching module 402 according to the temperature data of the power energy storage module 101, and control on/off of the fifth switching module 401 according to the electric quantity of the redundant energy storage module 102. The cooling unit 502 includes at least one of a liquid cooling element and an air cooling element, e.g., the cooling unit 502 includes only a liquid cooling element. The heating unit 501 may include a heating film. The fifth switch module 401 includes a first cooling relay 504 and a first heating relay 503, the sixth switch module 402 includes a second cooling relay 506 and a second heating relay 505, and the first cooling relay 504 and the second cooling relay 506 are sequentially connected in series between the power energy storage module 101 and the cooling unit 502. The junction of the first desuperheat relay 504 and the second desuperheat relay 506 is also connected to the redundant energy storage module 102. The first heating relay 503 and the second heating relay 505 are sequentially connected in series between the power energy storage module 101 and the heating unit 501. The junction of the first heating relay 503 and the second heating relay 505 is also connected to the redundant energy storage module 102. The control end of the first temperature-reducing relay 504, the control end of the first heating relay 503, the control end of the second temperature-reducing relay 506, and the control end of the second heating relay 505 are respectively connected to the control module 106, and the control module 106 can determine whether temperature rise or temperature reduction is required according to the temperature data of the power energy storage module 101.
Under the condition that heating is required, the control module 106 controls the second heating relay 505 to be turned on, at this time, if the electric quantity of the redundant energy storage module 102 is within the third electric quantity interval, the control module 106 controls the first heating relay 503 to be turned off, otherwise, the control module controls the first heating relay 503 to be turned on. Similar to the temperature rise condition, in the case of temperature reduction, the control module 106 controls the second temperature reduction relay 506 to be turned on, at this time, if the electric quantity of the redundant energy storage module 102 is within the third electric quantity interval, the control module 106 controls the first temperature reduction relay 504 to be turned off, otherwise, the control module controls the first temperature reduction relay 504 to be turned on.
The energy recovery device of the electric automobile provided by the embodiment is provided with a fifth switch module and a sixth switch module which are sequentially connected in series between a power energy storage module and an electricity utilization module, the connection point of the fifth switch module and the sixth switch module is also connected with a redundant energy storage module, the control module can control the on-off of the sixth switch module according to the actual demand of the electricity utilization module, the on-off of the fifth switch module can be controlled according to the residual electric quantity of the redundant energy storage module, the power supply of different energy storage modules to the electricity utilization module is realized, the electric quantity in the redundant energy storage module can be preferentially used in the power supply process, the capability of the redundant energy storage module for absorbing and recovering the feed energy can be improved on the basis of reducing the cycle number of the power energy storage module. When the electric quantity of the redundant energy storage module is insufficient, the power energy storage module can be used for supplying power to the power utilization module in an auxiliary mode, and the power supply stability of the power utilization module is guaranteed.
Optionally, with continued reference to fig. 5, on the basis of the foregoing embodiment, the control module 106 is further configured to control the first heating relay 503 and the second heating relay 505 to be turned on if the temperature data of the power energy storage module 101 is lower than the normal range; under the condition that the first heating relay 503 and the second heating relay 505 are both turned on, if the temperature data of the power energy storage module 101 is increased to be higher than a first preset temperature, the first heating relay 503 is controlled to be turned off; under the condition that the second heating relay 505 is conducted and the first heating relay 503 is not conducted, if the temperature data of the power energy storage module 101 is increased to be higher than a second preset temperature, the second heating relay 505 is controlled to be turned off. The first preset temperature is lower than the second preset temperature, and the first preset temperature and the second preset temperature are both within a normal range. The control module 106 is further configured to control the first temperature reduction relay 504 and the second temperature reduction relay 506 to be turned on when the temperature data of the power energy storage module 101 is higher than a normal range; under the condition that the first temperature-reducing relay 504 and the second temperature-reducing relay 506 are both turned on, if the temperature data of the power energy storage module 101 is reduced below a third preset temperature, the first temperature-reducing relay 504 is controlled to be turned off; under the condition that the second temperature-reducing relay 506 is turned on and the first temperature-reducing relay 504 is not turned on, if the temperature data of the power energy storage module 101 is reduced below a fourth preset temperature, the second temperature-reducing relay 506 is controlled to be turned off. The third preset temperature is higher than the fourth preset temperature, the fourth preset temperature is not lower than the second preset temperature, and the third preset temperature and the fourth preset temperature are both in a normal range.
Specifically, fig. 6 is a schematic flow chart of a power supply control method of a thermal management assembly according to an embodiment of the present invention, and with reference to fig. 5 and fig. 6, the power supply control method of the thermal management assembly is implemented by the control module 106, and on the basis of the foregoing embodiment, the power supply control method of the thermal management assembly includes:
s601, in the driving process, judging whether the temperature data of the power energy storage module is in a normal range.
The temperature data refers to temperature sampling data of the power energy storage module 101, and may be used as a criterion for determining whether the thermal management module needs to be started, for example, the temperature data may include an average value of temperatures of various positions of the power energy storage module 101. The normal range may be determined experimentally or empirically, and illustratively, the normal range may be 0 ℃ to 20 ℃.
And S602, under the condition that the temperature data is not in the normal range, judging whether the power energy storage module needs to be heated according to the temperature data.
If the temperature data is not within the normal range, it indicates that the power storage module 101 needs to be cooled down or heated. Further, it is required to determine whether heating or cooling is required according to the temperature data, for example, if the temperature data of the power energy storage module 101 is lower than the normal range, the power energy storage module 101 needs to be heated, otherwise, the power energy storage module 101 needs to be cooled.
And S603, controlling the first heating relay and the second heating relay to be conducted under the condition that the power energy storage module needs to be heated.
If the temperature data of the power energy storage module 101 is lower than the normal range, it indicates that the temperature of the power energy storage module 101 is too low, and long-term temperature data may affect the service life of the battery, so that the temperature of the power energy storage module 101 needs to be rapidly increased. The first heating relay 503 and the second heating relay 505 are controlled to be conducted, and the two energy storage modules, namely the power energy storage module 101 and the redundant energy storage module 102, can be used for supplying power to the heating unit 501, so that the actual output power of the heating element is improved, and the effect of accelerating temperature rise is achieved.
S604, judging whether the temperature data reaches above a first preset temperature.
The first preset temperature may be obtained from a battery temperature test or an empirical value. The temperature data of the power energy storage module 101 is near the first preset temperature for a long time, which may affect the discharge power of the battery in a short time, but may not cause the shortening of the battery life in the power energy storage module 101.
And S605, controlling the first heating relay to be turned off when the temperature data reaches a first preset temperature or above.
In the heating process, the temperature data reaches above the first preset temperature, which indicates that the temperature of the power energy storage module 101 at this time may affect the discharge power of the battery but cannot reduce the service life of the battery, so that the heating speed can be slowed down, the first heating relay 503 is controlled to be turned off, only one energy storage module of the redundant energy storage module 102 is used for supplying power to the heating unit 501 at this time, and the electric quantity of the power energy storage module 101 is stored while heating.
And S606, judging whether the temperature data reaches a second preset temperature or not.
The second preset temperature may be obtained from a battery temperature test or an empirical value. The temperature data of the power energy storage module 101 is near the second preset temperature, especially between the second preset temperature and the fourth preset temperature, so as to achieve the optimal working state of the battery in the power energy storage module 101.
And S607, controlling the second heating relay to be turned off when the temperature data reaches a second preset temperature or higher.
In the heating process, the temperature data reaches the second preset temperature, which indicates that the temperature of the power energy storage module 101 has reached the optimal range, so that the heating function can be turned off, the second heating relay 505 is controlled to be turned off, and the power energy storage module 101 is in the optimal working state.
And S608, controlling the first cooling relay and the second cooling relay to be conducted under the condition that the power energy storage module is not required to be heated.
The temperature data of the power energy storage module 101 higher than the normal range indicates that the temperature of the power energy storage module 101 is too high, and long-term high temperature may affect the service life of the battery, so that the temperature of the power energy storage module 101 needs to be rapidly reduced. The first cooling relay 504 and the second cooling relay 506 are controlled to be both switched on, and the two energy storage modules, namely the power energy storage module 101 and the redundant energy storage module 102, can be used for supplying power to the cooling unit 502, so that the actual output power of the cooling element is improved, and the effect of accelerating cooling is achieved.
And S609, judging whether the temperature data reaches below a third preset temperature.
The third preset temperature may be obtained from a battery temperature test or an empirical value. The temperature data of the power energy storage module 101 is near the third preset temperature for a long time, which may affect the discharge power of the battery in a short time, but may not cause the shortening of the battery life in the power energy storage module 101.
And S610, controlling the first cooling relay to be turned off under the condition that the temperature data reaches a third preset temperature or below.
In the cooling process, the temperature data reaches the third preset temperature, which indicates that the temperature of the power energy storage module 101 is high and may affect the discharge power of the battery but not reduce the service life of the battery, so that the cooling speed can be slowed down, the first cooling relay 504 is controlled to be turned off, only one energy storage module of the redundant energy storage module 102 is used for supplying power to the cooling unit 502, and the electric quantity of the power energy storage module 101 is stored while the temperature is reduced.
S611, judging whether the temperature data reaches below a fourth preset temperature.
The fourth preset temperature may be obtained from a battery temperature test or an empirical value. The temperature data of the power energy storage module 101 is near a fourth preset temperature, especially between the second preset temperature and the fourth preset temperature, so as to achieve the optimal working state of the battery in the power energy storage module 101.
And S612, controlling the second cooling relay to be turned off under the condition that the temperature data reaches a fourth preset temperature or below.
In the process of cooling, if the temperature data reaches below the fourth preset temperature, it indicates that the temperature of the power energy storage module 101 has reached the optimal range, so that the cooling function may be turned off, and the second cooling relay 506 is controlled to turn off, so that the power energy storage module 101 is in the optimal working state.
The control module among the energy recovery device of electric automobile that this embodiment provided can control the break-make of fifth module and sixth module respectively according to the temperature data of power energy storage module, switches the energy storage module of different quantity and supplies power for heating element or cooling element to realize different heating and cooling speed, when having improved electric automobile battery temperature governing speed, the electric quantity of power energy storage module has been preserved to a great extent.
Optionally, fig. 7 is a schematic structural diagram of another energy recovery device of an electric vehicle according to an embodiment of the present invention, referring to fig. 7, on the basis of the foregoing embodiment, the energy recovery device 100 of an electric vehicle further includes a first diode D1 and a second diode D2, the first diode D1 is disposed between the redundant energy storage module 102 and the first switch module 104; the second diode D2 is disposed between the redundant energy storage module 102 and the power consuming module 105.
Specifically, the first diode D1 and the second diode D2 may prevent the electrical signal from flowing backwards, and exemplarily, the number of the second diodes D2 may be 2, one second diode D2 is disposed between the redundant energy storage module 102 and the second cooling relay 506, and the other second diode D2 is disposed between the redundant energy storage module 102 and the second heating relay 505, so that the reliability of the energy recovery device may be improved.
Optionally, fig. 8 is a schematic structural diagram of another energy recovery device of an electric vehicle according to an embodiment of the present invention, referring to fig. 8, on the basis of the foregoing embodiment, the energy recovery device 100 of an electric vehicle further includes a seventh switch module 901, a first end of the seventh switch module 901 is connected to the power energy storage module 101, a second end of the seventh switch module 901 is connected to the redundant energy storage module 102, and a control end of the seventh switch module 901 is connected to the control module 106. The control module 106 is further connected to the redundant energy storage module 102, and the control module 106 is further configured to control the seventh switching module 901 to be turned on when the electric quantity of the redundant energy storage module 102 is in the second electric quantity interval, so as to charge the power energy storage module 101 by using the redundant energy storage module 102.
The second electric quantity interval is an electric quantity judgment basis for judging whether the redundant energy storage module 102 is about to reach the full electric quantity. The seventh switch module 901 refers to a switch component for the redundant energy storage module 102 to provide power for the power energy storage module 101.
In particular, the second power interval may comprise a power higher than 80% of full power. Under the condition that the electric quantity of the redundant energy storage module 102 is in the second electric quantity interval and the electric quantity of the power energy storage module 101 is not in the first electric quantity interval, the control module 106 can control the seventh switch module 901 to be switched on, the electric quantity of the redundant energy storage module 102 is utilized to charge the power energy storage module 101, the available electric quantity of the power energy storage module 101 can be increased, the charging times of a charging pile are reduced, the electric quantity of the redundant energy storage module 102 can be reduced, the capacity of receiving feedback electric energy is improved, and the economy and the reliability of the electric vehicle are improved.
For example, fig. 9 is a schematic flowchart of a control method of an energy recovery device according to an embodiment of the present invention, the control method of the energy recovery device is implemented by the control module 106, and on the basis of the foregoing embodiment, with reference to fig. 8 and 9, the control method of the energy recovery device includes:
and S901, judging whether the electric quantity of the power energy storage module is in a first electric quantity interval.
And S902, judging whether the electric quantity of the redundant energy storage module is in a second electric quantity interval or not under the condition that the electric quantity of the power energy storage module is in the first electric quantity interval.
And S903, controlling the first switch module to be turned on and the seventh switch module to be turned off under the condition that the electric quantity of the redundant energy storage module is not in the second electric quantity interval.
And S904, under the condition that the electric quantity of the redundant energy storage module is within the second electric quantity interval, controlling the first switch module to be disconnected and the seventh switch module to be disconnected.
And S905, judging whether the electric quantity of the redundant energy storage is in a second electric quantity interval or not under the condition that the electric quantity of the power energy storage module is not in the first electric quantity interval.
And S906, controlling the first switch module to be switched off under the condition that the electric quantity of the redundant energy storage module is not in the second electric quantity interval.
And S907, controlling the first switch module to be switched off and the seventh switch module to be switched on under the condition that the electric quantity of the redundant energy storage module is in the second electric quantity interval.
The seventh switch module is arranged between the redundant energy storage module and the power energy storage module in the energy recovery device of the electric automobile provided by the embodiment, the control module can control the on-off of the first switch module and the seventh switch module according to the electric quantity of the redundant energy storage module and the electric quantity of the power energy storage module, the feedback electric energy is utilized, the power energy storage module is stored and reversely charged, the feedback electric energy can be stored by utilizing the redundant energy storage module under the condition that the power energy storage module is close to full power, the electric quantity in the redundant energy storage module can be utilized to charge the power energy storage module under the condition that the electric quantity of the redundant energy storage module is close to full power, and the utilization rate of the feedback electric energy is improved.
The embodiment of the utility model provides an electric automobile is still provided, fig. 10 does the utility model provides a pair of electric automobile's structural schematic diagram, refer to fig. 10, electric automobile 1001 includes aforementioned arbitrary electric automobile's energy recuperation device 100. As described in the previous embodiments, the energy recovery device 100 at least includes a power energy storage module, a redundant energy storage module, a feedback module, a first switch module, an electricity utilization module, and a control module. The power energy storage module can comprise a power battery which supplies power for a motor of the electric automobile. Under the condition that the power energy storage module is not fully charged, the power energy storage module can receive and store feedback electric energy generated by the feedback module. Illustratively, the power battery may include at least one of a lead-acid battery, a lithium iron phosphate, a nickel hydrogen battery, a sodium sulfur battery, a secondary lithium battery, an air battery, and a ternary lithium battery. The feedback module may include an electric machine having a generator function, and may be integrated into a powertrain of an electric vehicle, for example. The control module may be a control chip or a single chip including a battery management system, and may be integrated with an onboard electronic control unit (also referred to as an ECU or a vehicle computer) of the electric vehicle. The first switching module may include at least one of a MOS transistor, an IGBT, and a relay. The power utilization module may include any power utilization device on the electric vehicle other than the electric motor, and may illustratively include at least one of a thermal management assembly, a lighting assembly, and a wiper assembly.
The utility model provides an electric automobile and energy recuperation device thereof is provided with power energy storage module, redundant energy storage module, the repayment module, first switch module, power consumption module and control module, the repayment module generates the repayment electric energy under the braking condition, power energy storage module storage repayment electric energy provides the electric energy for driving system, redundant energy storage module storage repayment electric energy is and for using the power module power supply, control module is detecting power energy storage module under the condition between first electric quantity interval, first switch module between control redundant energy storage module and the repayment module switches on, make the repayment electric energy save in redundant energy storage module, electric automobile's energy recuperation-line, and utilize redundant energy storage module storage repayment electric energy under the condition that power energy storage module is close to full electricity, the waste of energy has been reduced, the utilization ratio of repayment electric energy has been improved.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. An energy recovery device for an electric vehicle, comprising: the power energy storage module, the redundant energy storage module, the feedback module, the first switch module, the electricity utilization module and the control module are arranged in the power energy storage module;
the feedback module is used for generating feedback electric energy according to the kinetic energy of the electric automobile under the braking condition;
the power energy storage module is connected with the feedback module and used for storing the feedback electric energy and providing electric energy for a power system of the electric automobile;
the redundant energy storage module is connected with the feedback module through the first switch module, the redundant energy storage module is also connected with the power utilization module, the redundant energy storage module is used for storing the feedback electric energy and supplying power to the power utilization module, and the power utilization module comprises at least one of a heat management assembly, a lighting assembly and a wiper assembly;
the control module is respectively connected with the control end of the first switch module and the power energy storage module, and the control module is used for controlling the on-off of the first switch module according to the electric quantity of the power energy storage module.
2. The energy recovery device for an electric vehicle according to claim 1, further comprising: the second switch module is connected between the power energy storage module and the feedback module;
the power energy storage module is provided with a preset first electric quantity interval; the control module is connected with the control end of the second switch module, and the control module is further used for controlling the first switch module to be switched on and controlling the second switch module to be switched off when the electric quantity of the power energy storage module is detected to be within the first electric quantity interval.
3. The energy recovery device of an electric vehicle according to claim 1, further comprising: the power energy storage module is connected with the power utilization module through the fourth switch module; the control module is respectively connected with the control end of the third switch module and the control end of the fourth switch module, and the control module is further used for controlling the on-off of the third switch module and the fourth switch module according to the electric quantity information of the power energy storage module and the redundant energy storage module so as to switch at least one of the power energy storage module and the redundant energy storage module to supply power for the power utilization module.
4. The energy recovery device for an electric vehicle according to claim 1, further comprising: the first end of the fifth switch module is connected with the power energy storage module, the second end of the fifth switch module is respectively connected with the power utilization module and the redundant energy storage module, the control module is further connected with the control end of the fifth switch module, and the control module is further used for controlling the on-off of the fifth switch module according to the electric quantity of the redundant energy storage module.
5. The energy recovery device for an electric vehicle according to claim 4, further comprising: the first end of the sixth switch module is connected with the second end of the fifth switch module, the second end of the sixth switch module is connected with the power utilization module, the control module is further connected with the control end of the sixth switch module, and the control module is further used for controlling the on-off of the sixth switch module.
6. The energy recovery device of the electric vehicle according to claim 5, wherein the heat management assembly comprises a heating unit and a cooling unit, the heating unit and the cooling unit are both arranged on the power energy storage module, the heating unit is used for heating the power energy storage module, and the cooling unit is used for cooling the power energy storage module;
the control module is also used for controlling the on-off of the fifth switch module and the sixth switch module according to the temperature data of the power energy storage module.
7. The energy recovery device of an electric vehicle according to claim 6, wherein the cooling unit includes at least one of a liquid cooling element and an air cooling element; the heating unit includes a heating film.
8. The energy recovery device of the electric vehicle according to claim 1, further comprising a seventh switch module, wherein a first end of the seventh switch module is connected to the power energy storage module, a second end of the seventh switch module is connected to the redundant energy storage module, and a control end of the seventh switch module is connected to the control module;
the redundant energy storage module is provided with a preset second electric quantity interval; the control module is further used for controlling the seventh switch module to be switched on under the condition that the electric quantity of the redundant energy storage module is within the second electric quantity interval so as to utilize the redundant energy storage module to charge the power energy storage module.
9. The energy recovery device of claim 1, further comprising a first diode and a second diode, wherein the first diode is disposed between the redundant energy storage module and the first switching module; the second diode is arranged between the redundant energy storage module and the power utilization module.
10. An electric vehicle comprising the energy recovery device according to any one of claims 1 to 9.
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| CN202222746138.9U CN218463475U (en) | 2022-10-18 | 2022-10-18 | Electric automobile and energy recovery device thereof |
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