CN220809144U - Charging system and electric automobile - Google Patents
Charging system and electric automobile Download PDFInfo
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- CN220809144U CN220809144U CN202322455774.0U CN202322455774U CN220809144U CN 220809144 U CN220809144 U CN 220809144U CN 202322455774 U CN202322455774 U CN 202322455774U CN 220809144 U CN220809144 U CN 220809144U
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- 230000005669 field effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
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- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 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
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The embodiment of the application provides a charging system and an electric automobile, wherein the charging system comprises a first battery pack, a second battery pack, a quick charging interface, a first switch module and a second switch module; the positive electrode of the first battery pack is connected with the positive electrode of the fast charging interface through the first switch module, the positive electrode of the second battery pack is connected with the positive electrode of the fast charging interface through the second switch module, and the negative electrode of the first battery pack, the negative electrode of the second battery pack and the negative electrode of the fast charging interface are connected; the positive voltage of the first battery pack is greater than the positive voltage of the second battery pack; under the condition that the first switch module is conducted and the second switch module is disconnected, the quick charging interface charges the first battery pack through the first switch module; and under the condition that the first switch module is disconnected and the second switch module is conducted, the fast charging interface charges the second battery pack through the second switch module. The embodiment of the application can reduce the cost under the condition of being compatible with the charging of the first battery pack and the second battery pack.
Description
Technical Field
The application relates to the technical field of electronic circuits, in particular to a charging system and an electric automobile.
Background
Along with the acceleration of the popularization of new energy automobiles, the construction of basic equipment such as charging piles and the like matched with the new energy automobiles is gradually perfected. The battery life of an electric vehicle defines the maximum distance travelled per battery charge and the charging time for long trips. In order to better adapt to the quick charge requirement of a new energy automobile and improve the mileage duration efficiency of a battery, an 800V electric drive system is generally adopted. However, in the current 800V electric drive system, in order to be compatible with the 400V electric drive system, a large change is required to be made to the 400V electric drive system, and the change cost is large.
Disclosure of utility model
The embodiment of the application provides a charging system and an electric automobile, which can reduce cost under the condition of being compatible with charging of a first battery pack and a second battery pack.
A first aspect of an embodiment of the present application provides a charging system, including a first battery pack, a second battery pack, a fast charging interface, a first switch module and a second switch module;
The positive electrode of the first battery pack is connected with the positive electrode of the quick charge interface through the first switch module, the positive electrode of the second battery pack is connected with the positive electrode of the quick charge interface through the second switch module, and the negative electrode of the first battery pack, the negative electrode of the second battery pack and the negative electrode of the quick charge interface are connected; the positive voltage of the first battery pack is greater than the positive voltage of the second battery pack;
The fast charging interface charges the first battery pack through the first switch module under the condition that the first switch module is on and the second switch module is off;
And under the condition that the first switch module is disconnected and the second switch module is conducted, the fast charging interface charges the second battery pack through the second switch module.
Optionally, the charging system further includes a load, an anode of the load is connected to an anode of the second battery pack, and a cathode of the load is connected to a cathode of the second battery pack.
Optionally, the charging system further includes a third switch module, a fourth switch module, a fifth switch module, and a sixth switch module; the first battery pack comprises a first battery and a second battery, the second battery pack comprises a second battery, the positive electrode of the first battery is connected with the first end of the third switch module and the first end of the fourth switch module, the second end of the third switch module is connected with the second end of the first switch module, the first end of the first switch module is connected with the positive electrode of the quick charge interface, the second end of the fourth switch module is connected with the positive electrode of the second battery, the negative electrode of the first battery is connected with the first end of the fifth switch module and the first end of the sixth switch module, the second end of the fifth switch module is connected with the positive electrode of the second battery, and the second end of the sixth switch module is connected with the negative electrode of the second battery.
Optionally, when the third switch module and the fifth switch module are turned on and the fourth switch module and the sixth switch module are turned off, charging of the first battery pack is achieved.
Optionally, when the third switch module and the fifth switch module are turned off and the fourth switch module and the sixth switch module are turned on, charging of the second battery pack is achieved.
Optionally, the charging system further includes: and the vehicle-mounted charger is connected with the positive electrode of the second battery pack.
Optionally, the vehicle-mounted charger includes: an alternating current-to-direct current module and a DC/DC converter.
Optionally, the load includes: at least one of an electric drive system, a PTC heater and an alternating current compressor.
Optionally, the electric driving system includes: a front electric drive system and a rear electric drive system.
A second aspect of an embodiment of the present application provides an electric vehicle, including a charging system according to any one of the first aspects of the embodiment of the present application.
The charging system of the embodiment of the application can charge the first battery pack or the second battery pack through the fast charging interface, can be compatible with the fast charging of the high-voltage battery (the first battery pack) and the low-voltage battery (the second battery pack), realizes the fast charging compatible with the first battery pack and the second battery pack under the condition of not changing the original power system, and can reduce the cost under the condition of being compatible with the charging of the first battery pack and the second battery pack.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application and that other drawings may be obtained from them without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a charging system according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of another charging system according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of another charging system according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of another charging system according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The terms first, second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed but may optionally include additional steps or elements not listed or inherent to such process, article, or apparatus.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the described embodiments of the application may be combined with other embodiments.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a charging system according to an embodiment of the application. As shown in fig. 1, the charging system 100 may include a first battery pack 11, a second battery pack 12, a fast charge interface 20, a first switch module K1, and a second switch module K2;
The positive electrode of the first battery pack 11 is connected with the positive electrode of the fast charge interface 20 through the first switch module K1, the positive electrode of the second battery pack 12 is connected with the positive electrode of the fast charge interface 20 through the second switch module K2, and the negative electrode of the first battery pack 11, the negative electrode of the second battery pack 12 and the negative electrode of the fast charge interface 20 are connected; the positive voltage of the first battery 11 is greater than the positive voltage of the second battery 12; the first end of the first switch module K1 is connected with the positive electrode of the fast charging interface 20, and the second end of the first switch module K1 is connected with the positive electrode of the first battery pack 11; the first end of the second switch module K2 is connected with the positive electrode of the quick charge interface 20, and the second end of the second switch module K2 is connected with the positive electrode of the second battery pack 12;
In the case where the first switch module K1 is turned on and the second switch module K2 is turned off, the quick charge interface 20 charges the first battery pack 11 through the first switch module K1;
With the first switch module K1 off and the second switch module K2 on, the fast charge interface 20 charges the second battery pack 12 through the second switch module K2.
In the embodiment of the present application, the positive voltage of the first battery 11 is greater than the positive voltage of the second battery 12, for example, the positive voltage of the first battery 11 is 800V, and the positive voltage of the second battery 12 is 400V.
The fast charge interface 20 may be a dc fast charge interface 20, and the first battery pack 11 or the second battery pack 12 may be subjected to dc fast charge through the fast charge interface 20. The quick charge interface 20 may be connected to a dc quick charge stake (dc charge stake). The direct current fast charging pile can convert the alternating current of the power grid into direct current and then charge the first battery pack 11 or the second battery pack 12 through the fast charging interface 20.
The first and second switch modules K1 and K2 may be any one of a relay, an insulated gate bipolar transistor (insulated gate bipolar transistor, IGBT), and a metal-oxide-semiconductor (MOS) field effect transistor. For example, the first switching module K1 and the second switching module K2 may both be relays, such as high voltage relays.
The charging system 100 may further include a control module, where the charging gun of the dc fast charging pile is inserted into the fast charging interface 20, the first switch module K1 and the second switch module K2 are both turned off, the control module may detect the voltage of the dc fast charging pile, and if the detected voltage of the dc fast charging pile is 800V, the control module may control the first switch module K1 to be turned on, and the second switch module K2 to be turned off, at which time, the dc fast charging pile may charge the first battery pack 11 through the fast charging interface 20. If the voltage of the dc fast charging pile is detected to be 400V, the control module may control the first switch module K1 to be turned off and the second switch module K2 to be turned on, at this time, the dc fast charging pile may charge the second battery pack 12 through the fast charging interface 20. The embodiment of the application can be compatible with 800V direct current quick-charging piles and 400V direct current quick-charging piles.
The charging system 100 according to the embodiment of the present application can charge the first battery pack 11 or the second battery pack 12 through the fast charging interface 20, and can be compatible with fast charging of a high-voltage battery (the first battery pack 11) and a low-voltage battery (the second battery pack 12), so that the fast charging compatible with the first battery pack 11 and the second battery pack 12 can be realized without changing the original power system, and the cost can be reduced under the condition of being compatible with the charging of the first battery pack 11 and the second battery pack 12.
Referring to fig. 2, fig. 2 is a schematic structural diagram of another charging system according to an embodiment of the application. Fig. 2 is based on fig. 1, and as shown in fig. 2, the charging system 100 may further include a load 30. The positive electrode of the load 30 is connected to the positive electrode of the second battery 12, and the negative electrode of the load 30 is connected to the negative electrode of the second battery 12.
In the embodiment of the present application, the positive electrode voltage of the second battery pack 12 is smaller than the positive electrode voltage of the first battery pack 11. The positive pole of load 30 connects the positive pole of second group battery 12, and load 30 can supply power through second group battery 12, does not need to change the original power supply mode of load 30, can reduce cost under the condition that compatible first group battery 11 and second group battery 12 charge.
Wherein the load 30 comprises: at least one of an electric drive system (ELECTRIC DRIVE SYSTEM, EDS), PTC heater, AC compressor (AC compressor).
Wherein, the electricity drives the system and includes: a Front electric drive system (Front EDS) and a Rear electric drive system (Rear EDS). The front electric drive system may provide electric drive for the front wheels of the vehicle and the rear electric drive system may provide electric drive for the rear wheels of the vehicle.
Referring to fig. 3, fig. 3 is a schematic structural diagram of another charging system according to an embodiment of the application. Fig. 3 is a view of fig. 2, and as shown in fig. 3, the charging system 100 further includes a third switch module K3, a fourth switch module K4, a fifth switch module K5, and a sixth switch module K6; the first battery pack 11 includes a first battery and a second battery, the second battery pack 12 includes the second battery, the positive electrode of the first battery is connected to the first end of the third switch module K3 and the first end of the fourth switch module K4, the second end of the third switch module K3 is connected to the second end of the first switch module K1, the first end of the first switch module K1 is connected to the positive electrode of the fast charge interface 20, the second end of the fourth switch module K4 is connected to the positive electrode of the second battery, the negative electrode of the first battery is connected to the first end of the fifth switch module K5 and the first end of the sixth switch module K6, the second end of the fifth switch module K5 is connected to the positive electrode of the second battery, and the second end of the sixth switch module K6 is connected to the negative electrode of the second battery.
In the embodiment of the present application, the first battery pack 11 includes a first battery and a second battery, and the second battery pack 12 includes a second battery. For example, the first battery and the second battery may each be a 400V battery, and in this case, the voltage of the first battery pack 11 is 800V, and the voltage of the second battery pack 12 is 400V.
The third, fourth, fifth and sixth switch modules K3, K4, K5 and K6 may be any one of a relay, an insulated gate bipolar transistor (insulated gate bipolar transistor, IGBT), a metal-oxide-semiconductor (MOS) field effect transistor. For example, the third, fourth, fifth and sixth switching modules K3, K4, K5 and K6 may be relays, such as high-voltage relays.
Wherein, when the third switch module K3 and the fifth switch module K5 are turned on and the fourth switch module K4 and the sixth switch module K6 are turned off, the charging of the first battery pack 11 is achieved.
In the embodiment of the present application, when the third switch module K3 and the fifth switch module K5 are turned on, the fourth switch module K4 and the sixth switch module K6 are turned off, the first switch module K1 is turned on, and the second switch module K2 is turned off, the first battery and the second battery are connected in series to form the first battery pack 11, and the direct-current fast-charging pile can charge the first battery pack 11 through the fast-charging interface 20.
Wherein, when the third switch module K3 and the fifth switch module K5 are turned off and the fourth switch module K4 and the sixth switch module K6 are turned on, the second battery pack 12 is charged.
In the embodiment of the present application, when the third switch module K3 and the fifth switch module K5 are turned off, the fourth switch module K4 and the sixth switch module K6 are turned on, the first switch module K1 is turned off, and the second switch module K2 is turned on, the first battery and the second battery are connected in parallel, and the direct current fast charging pile can charge the first battery and the second battery through the fast charging interface 20, and since the second battery pack 12 includes the second battery, the charging to the second battery pack 12 can be achieved.
In the case where the third and fifth switch modules K3 and K5 are turned off, the fourth and sixth switch modules K4 and K6 are turned on, the first switch module K1 is turned off, and the second switch module K2 is turned off, the first and second batteries may be connected in parallel, and the first and second batteries may supply power to the load 30.
Referring to fig. 4, fig. 4 is a schematic structural diagram of another charging system according to an embodiment of the application. Fig. 4 is a view based on fig. 3, and as shown in fig. 4, the charging system 100 further includes an on-board charger 40, where the on-board charger 40 is connected to the positive electrode of the second battery pack 12.
In the embodiment of the present application, the vehicle-mounted charger 40 may convert the direct current of the ac charging pile into the direct current to charge the second battery pack 12.
Wherein, the vehicle-mounted charger 40 comprises: an alternating current-to-direct current module and a DC/DC converter.
In the embodiment of the application, a direct current-to-direct current (DC/DC) converter may also be referred to as a DC-DC converter, which is a DC conversion device for converting a DC base power supply into other DC voltages. The DC/DC converter may convert a high voltage to a low voltage or a low voltage to a high voltage. The first end of the alternating current-to-direct current module is connected with the alternating current charging pile, the first end of the alternating current-to-direct current module is connected with the first end of the DC/DC converter, and the second end of the DC/DC converter is connected with the anode of the second battery pack 12.
The ac-DC module can convert the DC power of the ac charging pile into DC power, and then output the voltage meeting the charging requirement of the second battery 12 through the DC/DC converter to charge the second battery 12.
In the embodiment of the application, the DC/DC converter, the electric drive system, the PTC heater and the alternating current compressor still work in a 400V system during 800V fast charging. The voltage level of the high-voltage component is not required to be changed, the DC/DC converter, the electric drive system, the PTC heater and the alternating current compressor are not required to be changed, and the power supply modes of the DC/DC converter, the electric drive system, the PTC heater and the alternating current compressor are not required to be changed.
In other scenarios than 800V fast charge, all high voltage components still operate with 400V systems. The 400V quick-filling pile and the 800V quick-filling pile are compatible through the switch module. Only one 800V charging interface is needed, so that the quick charging of the first battery pack 11 and the second battery pack 12 can be compatible under the condition of reducing the design changes of the existing power system and the high-voltage system, and the cost can be reduced under the condition of being compatible with the charging of the first battery pack 11 and the second battery pack 12.
The embodiment of the application also provides an electric automobile. The electric vehicle may include the charging system 100 described above.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed charging system and electric vehicle may be implemented in other manners. For example, the charging system embodiments described above are merely illustrative, such as the division of the units, merely a logical functional division, and there may be additional divisions in actual implementation, such as multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed.
Claims (10)
1. The charging system is characterized by comprising a first battery pack, a second battery pack, a quick charging interface, a first switch module and a second switch module;
The positive electrode of the first battery pack is connected with the positive electrode of the quick charge interface through the first switch module, the positive electrode of the second battery pack is connected with the positive electrode of the quick charge interface through the second switch module, and the negative electrode of the first battery pack, the negative electrode of the second battery pack and the negative electrode of the quick charge interface are connected; the positive voltage of the first battery pack is greater than the positive voltage of the second battery pack;
The fast charging interface charges the first battery pack through the first switch module under the condition that the first switch module is on and the second switch module is off;
And under the condition that the first switch module is disconnected and the second switch module is conducted, the fast charging interface charges the second battery pack through the second switch module.
2. The charging system of claim 1, further comprising a load, wherein a positive electrode of the load is connected to a positive electrode of the second battery, and wherein a negative electrode of the load is connected to a negative electrode of the second battery.
3. The charging system of claim 1 or 2, further comprising a third switch module, a fourth switch module, a fifth switch module, and a sixth switch module; the first battery pack comprises a first battery and a second battery, the second battery pack comprises a second battery, the positive electrode of the first battery is connected with the first end of the third switch module and the first end of the fourth switch module, the second end of the third switch module is connected with the second end of the first switch module, the first end of the first switch module is connected with the positive electrode of the quick charge interface, the second end of the fourth switch module is connected with the positive electrode of the second battery, the negative electrode of the first battery is connected with the first end of the fifth switch module and the first end of the sixth switch module, the second end of the fifth switch module is connected with the positive electrode of the second battery, and the second end of the sixth switch module is connected with the negative electrode of the second battery.
4. The charging system of claim 3, wherein charging of the first battery pack is accomplished with the third and fifth switch modules turned on and the fourth and sixth switch modules turned off.
5. The charging system of claim 3, wherein charging of the second battery pack is accomplished with the third and fifth switch modules open and the fourth and sixth switch modules are conductive.
6. The charging system of claim 1, wherein the charging system further comprises: and the vehicle-mounted charger is connected with the positive electrode of the second battery pack.
7. The charging system of claim 6, wherein the vehicle-mounted charger comprises: an alternating current-to-direct current module and a DC/DC converter.
8. The charging system of claim 2, wherein the load comprises: at least one of an electric drive system, a PTC heater and an alternating current compressor.
9. The charging system of claim 8, wherein the electric drive system comprises: a front electric drive system and a rear electric drive system.
10. An electric vehicle comprising a charging system according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322455774.0U CN220809144U (en) | 2023-09-08 | 2023-09-08 | Charging system and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322455774.0U CN220809144U (en) | 2023-09-08 | 2023-09-08 | Charging system and electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220809144U true CN220809144U (en) | 2024-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322455774.0U Active CN220809144U (en) | 2023-09-08 | 2023-09-08 | Charging system and electric automobile |
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|---|---|
| CN (1) | CN220809144U (en) |
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2023
- 2023-09-08 CN CN202322455774.0U patent/CN220809144U/en active Active
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