CN217892560U - Charge-discharge module and vehicle - Google Patents
Charge-discharge module and vehicle Download PDFInfo
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- CN217892560U CN217892560U CN202221412178.3U CN202221412178U CN217892560U CN 217892560 U CN217892560 U CN 217892560U CN 202221412178 U CN202221412178 U CN 202221412178U CN 217892560 U CN217892560 U CN 217892560U
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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 provides a charge-discharge module and vehicle. The charging and discharging module comprises a first battery component, a second battery component, a first switch component, a second switch component, a charging anode, a charging cathode, a discharging anode and a discharging cathode; the first switch assembly is configured to switch a series-parallel state of the first battery assembly and the second battery assembly between the charging positive electrode and the charging negative electrode; the second switch assembly is configured to switch at least one of the first and second battery assemblies between the discharging positive electrode and the discharging negative electrode. The utility model discloses a charge-discharge module can realize the series-parallel connection switching of first battery pack and second battery pack through setting up first switch module to satisfy different charging voltage demands, simultaneously, through setting up second switch module, make charge-discharge module under the charging voltage of difference, the homoenergetic is discharged with specific discharging voltage, has satisfied the power consumption demand in the charging process.
Description
Technical Field
The embodiment of the utility model provides a relate to charge-discharge technical field, especially relate to a charge-discharge module and vehicle.
Background
With the development of charging technology, new energy vehicles can support higher charging voltages to increase charging speed. However, vehicles with different charging voltages coexist, and correspondingly, charging devices capable of providing different charging voltages coexist, and in order to adapt to the charging voltages of different charging devices, in the prior art, charging devices adapted to different charging voltages may be controlled by adjusting a charging circuit. Specifically, when the battery module of the vehicle supplies power to the vehicle-mounted device, the power is usually supplied at a fixed voltage, generally, the battery module of the vehicle supplies power to the vehicle-mounted device at a fixed 400V power supply voltage or 800V power supply voltage, for example, if the power receiving voltage of the vehicle-mounted device is 400V and the normal charging voltage of the vehicle is 400V, the output voltage of the battery module is also 800V when the vehicle is charged at the 800V voltage through circuit switching, and due to voltage mismatch, part of the vehicle-mounted device cannot normally operate during charging.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a charge-discharge module and vehicle to when solving the vehicle and charging with different voltages, the unable problem of normally working of mobile unit.
In order to solve the above problem, the utility model discloses a realize like this:
in a first aspect, an embodiment of the present invention provides a charge and discharge module, including a first battery assembly, a second battery assembly, a first switch assembly, a second switch assembly, a charge positive electrode, a charge negative electrode, a discharge positive electrode, and a discharge negative electrode;
the first switch assembly is configured to switch a series-parallel state of the first battery assembly and the second battery assembly between the charging positive electrode and the charging negative electrode;
the second switch assembly is configured to switch at least one of the first battery assembly and the second battery assembly to be connected between the discharging positive electrode and the discharging negative electrode.
In some embodiments, the positive electrode of the first battery assembly is electrically connected to the charging positive electrode, and the negative electrode of the second battery assembly is electrically connected to the charging negative electrode;
the first switch assembly has a first connection mode in which the first battery assembly and the second battery assembly are connected in series between the charging positive electrode and the charging negative electrode, and a second connection mode in which the first battery assembly and the second battery assembly are connected in parallel between the charging positive electrode and the charging negative electrode.
In some embodiments, the first switch assembly comprises a first switch, a second switch, and a third switch;
one end of the first switch is electrically connected with the anode of the first battery assembly, and the other end of the first switch is electrically connected with the anode of the second battery assembly;
two ends of the second switch are respectively and electrically connected with the negative electrode of the first battery assembly and the positive electrode of the second battery assembly;
one end of the third switch is electrically connected with the negative electrode of the first battery assembly, and the other end of the third switch is electrically connected with the negative electrode of the second battery assembly.
In some embodiments, the charge and discharge module further comprises an intermediate node electrically connected to the negative electrode of the first battery assembly and/or the positive electrode of the second battery assembly;
the second switch assembly is electrically connected with the intermediate node, the charging positive electrode, the charging negative electrode, the discharging positive electrode and the discharging negative electrode respectively, and the second switch assembly has a third connection mode and a fourth connection mode;
in the third connection mode, the intermediate node is electrically connected with the discharging positive electrode, and the charging negative electrode is electrically connected with the discharging negative electrode;
in the fourth connection mode, the charging positive electrode is electrically connected to the discharging positive electrode, and the intermediate node is electrically connected to the discharging negative electrode.
In some embodiments, the second switch assembly comprises a fourth switch, a fifth switch, a sixth switch, and a seventh switch;
one end of the fourth switch is electrically connected with the charging positive electrode, and the other end of the fourth switch is electrically connected with the discharging positive electrode;
one end of the fifth switch is electrically connected with the discharge anode, and the other end of the fifth switch is electrically connected with the intermediate node;
one end of the sixth switch is electrically connected with the intermediate node, and the other end of the sixth switch is electrically connected with the discharge cathode;
one end of the seventh switch is electrically connected with the discharging cathode, and the other end of the seventh switch is electrically connected with the charging cathode.
In some embodiments, the nominal charging voltage and the nominal discharging voltage of the first battery assembly and the second battery assembly are both 400V.
In some embodiments, a voltage sensor is further included for collecting the voltage of the first battery assembly and the second battery assembly.
In some embodiments, a controller is further included, the controller being electrically connected to the voltage sensor, the controller being further electrically connected to both the first switch assembly and the second switch assembly.
In a second aspect, the embodiment of the present invention further provides a vehicle, including any one of the above charging and discharging modules.
The utility model discloses a charge and discharge module can realize the series-parallel connection switching of first battery pack and second battery pack through setting up first switch module to satisfy different charging voltage demands, simultaneously, through setting up second switch module, make charge and discharge module under the charging voltage of difference, the homoenergetic can be discharged with specific discharging voltage, has satisfied the power consumption demand in the charging process.
Further, the utility model discloses an at least some embodiments can realize when charging with the high voltage, discharge with the low-voltage, like this, relevant mobile unit can continue to use existing low-voltage mobile unit, for example, when the high voltage is 800V, mobile unit can be based on using current 400V battery charging outfit along, and low-voltage mobile unit's technique is mature relatively, and its cost is relatively lower, consequently, the utility model discloses an it is helpful to reduce the cost rise that leads to because charging voltage improves, simultaneously, also helps improving the reliability of vehicle.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a circuit diagram of a charge/discharge module according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The terms "first," "second," and the like in the embodiments of the present invention are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Further, as used herein, "and/or" means at least one of the connected objects, e.g., a and/or B and/or C, means 7 cases including a alone, B alone, C alone, and both a and B present, B and C present, a and C present, and a, B, and C present.
In the related art, most of electric vehicles have a charging and discharging voltage of 400V, specifically, the charging voltage of the vehicle is 400V, the power supply voltage of the battery module for supplying power to the vehicle-mounted device is also 400V, and correspondingly, the charging voltage provided by the charging device such as the provided charging pile is also 400V.
With the development of vehicle technology, the charging speed is improved by improving the charging voltage, specifically, in the related art, a technical scheme of charging and discharging through 800V voltage is provided, and accordingly, the charging pile used in a matched manner is also 800V.
In addition, the vehicle-mounted device with the 800V architecture has higher cost than the vehicle-mounted device with the 400V architecture, and has lower stability than the vehicle-mounted device with the 400V architecture to some extent.
In order to be compatible with existing 400V charging equipment which is relatively widely used and to reserve an upgrade space compatible with 800V charging facilities which may be widely used in the future, charging circuits compatible with different charging voltages are provided in the related art.
However, the voltage of the battery supplying power to the vehicle-mounted device is relatively fixed, which results in that part of the vehicle-mounted device cannot be used normally during the charging process of the vehicle. Specifically, when the battery module of the vehicle supplies power to the vehicle-mounted device, the power is usually supplied at a fixed voltage, generally, the battery module of the vehicle supplies power to the vehicle-mounted device at a fixed 400V power supply voltage or 800V power supply voltage, for example, if the power receiving voltage of the vehicle-mounted device is 400V and the normal charging voltage of the vehicle is 400V, the output voltage of the battery module is also 800V when the vehicle is charged at 800V by circuit switching, and part of the vehicle-mounted device cannot normally operate during charging due to voltage mismatch.
The embodiment of the utility model provides a charge-discharge module.
As shown in fig. 1, the charge/discharge module in this embodiment includes a first battery assembly P1, a second battery assembly P2, a first switch assembly M1, a second switch assembly M2, a charging positive electrode C +, a charging negative electrode C-, a discharging positive electrode D +, and a discharging negative electrode D-.
In this embodiment, the first battery pack P1 and the second battery pack P2 may be battery packs, and the battery packs may be fixedly arranged or detachably support battery packs that are powered by electricity.
In some embodiments, the rated charging/discharging voltage of the first battery assembly P1 and the rated charging/discharging voltage of the second battery assembly P2 are both 400V.
In other embodiments, it is obvious that the charging and discharging voltages of the first battery pack P1 and the second battery pack P2 can be adjusted as needed.
For example, if the charging requirements of 100V and 200V need to be met, the charging and discharging voltages of the two battery assemblies can be both 100V, and if the charging and discharging requirements of 200V and 400V need to be met, the discharging voltages of the two battery assemblies can be both 200V. In implementation, the charging and discharging voltages of the battery assemblies can be configured according to specific use scenes, so that the charging can be performed at two different voltages, namely the first voltage and the second voltage.
In this embodiment, only the rated charging/discharging voltages of the first battery pack P1 and the second battery pack P2 are 400V for example.
The first switching element M1 in the present embodiment is configured to switch the series-parallel state between the charging positive electrode C + and the charging negative electrode C-of the first cell assembly P1 and the second cell assembly P2.
Specifically, the connection state of the first battery pack P1 and the second battery pack P2 is switched to be connected in series or in parallel with each other by adjusting the switching state of the first switching assembly M1.
More specifically, the first switch module M1 in the present embodiment has two connection modes, i.e., a first connection mode and a second connection mode.
In the embodiment, in the first connection mode, when the first battery pack P1 and the second battery pack P2 are connected in series, the positive electrode of the first battery pack P1 is electrically connected to the charging positive electrode C +, the negative electrode of the first battery pack P1 is electrically connected to the positive electrode of the second battery pack P2, and the negative electrode of the second battery pack P2 is electrically connected to the charging negative electrode C-.
When the rated charge-discharge voltages corresponding to the first battery pack P1 and the second battery pack P2 are both 400V, the first battery pack P1 and the second battery pack P2 can be charged at a charge voltage of 800V when they are connected in series between the positive charge electrode C + and the negative charge electrode C-.
In the present embodiment, in the second connection mode, the first cell assembly P1 and the second cell assembly P2 are connected in parallel between the charge positive electrode C + and the charge negative electrode C-. That is, the positive electrodes of the first and second battery packs P1 and P2 are electrically connected to the positive charge electrode C +, and the negative electrodes of the first and second battery packs P1 and P2 are electrically connected to the negative charge electrode C-, so that charging can be performed by a charging voltage of 400V.
In the technical scheme of this embodiment, the charging anode C + and the charging cathode C-of the charging and discharging module are both electrically connected to the conductive terminal on the charging female connector, the charging female connector can be arranged on electric equipment such as a vehicle, and in the charging process, the charging male connector of the charging equipment such as a charging pile is plugged into the charging female connector on the electric equipment, so that the charging anode C + and the charging cathode C-are respectively electrically connected to the corresponding power supply terminals on the charging equipment to perform the charging process.
It should be understood that, identification signal lines of the charging protocol are usually set on the charging male connector and the charging female connector, and in implementation, when the charging male connector and the charging female connector are plugged, firstly, the charging protocol is identified, and then, the first switch assembly M1 is switched on and off, so as to realize series-parallel switching of the first battery assembly P1 and the second battery assembly P2.
The second switching assembly M2 is configured to switch at least one of the first and second battery assemblies P1 and P2 between the discharging positive electrode D + and the discharging negative electrode D-.
The discharging anode D + and the discharging cathode D-in the embodiment are respectively and electrically connected with the corresponding receiving ends of the vehicle-mounted equipment.
It should be understood that the actual operating voltage of the vehicle-mounted device is relatively low, for example, different operating voltages such as 48V, 36V, 12V, etc., the output voltage of the battery pack needs to be subjected to voltage reduction processing, and the power receiving terminal of the vehicle-mounted device of this embodiment refers to the output terminal of the battery pack, rather than the connection terminal of the specific electric device such as the vehicle-mounted computer, the vehicle-mounted air conditioner, etc.
It is to be understood that when the first battery pack P1 and the second battery pack P2 are connected in parallel, the output voltage of the battery packs is 400V, which is consistent with the rated operating voltage of the vehicle-mounted device, and therefore, the second switch pack M2 in this embodiment is actually used to adjust the output voltage of the battery packs when the first battery pack P1 and the second battery pack P2 are connected in series.
In this embodiment, the charging and discharging module further includes an intermediate node, and the intermediate node is electrically connected to the cathode of the first battery pack P1 and/or the anode of the second battery pack P2. It is understood that when the first battery pack P1 and the second battery pack P2 are connected in series, the intermediate node is a point between the first battery pack P1 and the second battery pack P2.
The second switch component M2 is electrically connected with the middle node, the charging anode C +, the charging cathode C-, the discharging anode D + and the discharging cathode D-respectively.
The second switching assembly M2 has a third connection mode and a fourth connection mode.
In the third connection mode, the intermediate node is electrically connected with the discharging anode D +, the charging cathode C-is electrically connected with the discharging cathode D-, and at this time, the anode and the cathode of the second battery pack P2 are respectively connected with the discharging anode D + and the discharging cathode D-, and at this time, it can be understood that the power consumption end is solely supplied with power through the second battery pack P2.
In the fourth connection mode, the charging positive electrode C + is electrically connected with the discharging positive electrode D +, and the intermediate node is electrically connected with the discharging negative electrode D-, at this time, the positive electrode and the negative electrode of the first battery pack P1 are respectively connected with the discharging positive electrode D + and the discharging negative electrode D-, and at this time, it can be understood that the power consumption end is solely supplied with power through the first battery pack P1.
In this process, the first battery pack P1 and the second battery pack P2 are connected in series between the charging positive electrode C + and the charging negative electrode C-, and therefore, in this process, charging can be performed at a voltage of 800V, and only one of the first battery pack P1 and the second battery pack P2 supplies power to the in-vehicle device, and therefore, the output voltage of the battery pack is also 400V, so that the present embodiment realizes that the power supply to the electric device is performed at a supply voltage of 400V when charging is performed at a charging voltage of 800V.
In some embodiments, each of the first switch assembly M1 and the second switch assembly M2 may include a plurality of switch elements, and each connection mode of the first switch assembly M1 and the second switch assembly M2 may be actually understood as being realized by switching on/off states of each switch element. In other words, by switching the on/off state of each switching element, the first switching assembly M1 and the second switching assembly S2 can provide two different electrical connection modes.
The switch element in the present embodiment may be selected from various switch elements for switching the on/off state of the circuit, and may include, for example and without limitation, a switch element such as a relay, which is not further limited herein.
In some embodiments, when the first battery assembly P1 and the second battery assembly P2 are connected in series, the second switch assembly M2 may be provided only for one of the first battery assembly P1 and the second battery assembly P2, for example, in one embodiment, only the first battery assembly P1 can be connected between the discharging positive electrode D + and the discharging negative electrode D-through the second switch assembly M2, which helps to simplify the circuit structure and the control process.
In other embodiments, two sets of switching circuits may be provided, and in implementation, the first battery pack P1 may be connected between the discharging anode D + and the discharging cathode D-as needed, or the first battery pack P1 may be connected between the discharging anode D + and the discharging cathode D-, that is, one battery pack may be selected from the first battery pack P1 and the second battery pack P2 or exchanged as a discharging battery pack, which is more flexible.
In some embodiments, the charging and discharging module further includes a voltage sensor for acquiring voltages of the first battery pack P1 and the second battery pack P2.
In some embodiments, a controller is further included, the controller being electrically connected to the voltage sensor, the controller being further electrically connected to both the first switching assembly M1 and the second switching assembly M2.
It is understood that there may be some difference between the actual voltage and the rated voltage of the battery assembly, and generally, for a battery assembly with the same parameters, the more the battery assembly is charged, the higher the actual output voltage.
In this embodiment, by providing the voltage sensor, the actual voltages of the first battery pack P1 and the second battery pack P2 can be detected, so that the electric quantity detection of the first battery pack P1 and the second battery pack P2 is realized.
Furthermore, the controller can be used for controlling and switching the first battery pack P1 and the second battery pack P2 to supply power to the vehicle-mounted equipment, so that the consistency and the balance of the voltage among the battery packs are improved, the integral safety factor is improved, and the safety risk possibly caused by the inconsistent voltage among the battery packs is reduced.
It should be understood that the control process of controlling the on-off state of the switching element such as the relay according to the control signal belongs to the existing control technology, and the specific process thereof is not further described and limited in this embodiment.
As shown in fig. 1, in some embodiments, the first switch assembly M1 includes a first switch S1, a second switch S2, and a third switch S3, one end of the first switch S1 is electrically connected to the positive electrode of the first battery assembly P1, the other end is electrically connected to the positive electrode of the second battery assembly P2, two ends of the second switch S2 are respectively electrically connected to the negative electrode of the first battery assembly P1 and the positive electrode of the second battery assembly P2, one end of the third switch S3 is electrically connected to the negative electrode of the first battery assembly P1, and the other end is electrically connected to the negative electrode of the second battery assembly P2.
In the first connection mode of the first switching assembly M1, the first switch S1 and the third switch S3 are opened, the second switch S2 is closed, and the first battery assembly P1 and the second battery assembly P2 are in a series state.
When the first switch assembly M1 is in the second connection mode, the second switch S2 is opened, the first switch S1 and the third switch S3 are closed, and the first battery assembly P1 and the second battery assembly P2 are in a parallel state.
In some embodiments, the second switch assembly M2 includes a fourth switch S4, a fifth switch S5, a sixth switch S6, and a seventh switch S7, one end of the fourth switch S4 is electrically connected to the positive charging electrode C +, the other end is electrically connected to the positive discharging electrode D +, one end of the fifth switch S5 is electrically connected to the positive discharging electrode D +, the other end is electrically connected to the intermediate node, one end of the sixth switch S6 is electrically connected to the intermediate node, the other end is electrically connected to the negative discharging electrode D-, one end of the seventh switch S7 is electrically connected to the negative discharging electrode D-, and the other end is electrically connected to the negative charging electrode C-.
When the first switch assembly M1 is in the first connection mode and the second switch assembly M2 is in the third connection mode, the fourth switch S4 and the sixth switch S6 are disconnected, the fifth switch S5 and the seventh switch S7 are closed, and at the moment, the second battery assembly P2 is separately connected between the discharging anode D + and the discharging cathode D-and is separately used for supplying power to the vehicle-mounted equipment.
When the first switch assembly M1 is in the first connection mode and the second switch assembly M2 is in the fourth connection mode, the fourth switch S4 and the sixth switch S6 are closed, the fifth switch S5 and the seventh switch S7 are opened, and at the moment, the first battery assembly P1 is independently connected between the discharging anode D + and the discharging cathode D-and independently supplies power to the vehicle-mounted equipment.
During implementation, the voltage of the first battery pack P1 and the voltage of the second battery pack P2 can be acquired through the voltage sensor, then the connection mode of the second switch pack M2 is switched through the controller, and the battery pack with higher electric quantity is used for supplying power.
In an exemplary embodiment, only the actual voltage between the first and second battery packs P1 and P2 may be compared and then powered by the battery pack with the higher actual voltage.
In another embodiment, the voltage difference between the first battery pack P1 and the second battery pack P2 may be compared, and when the voltage difference reaches a certain voltage threshold, the battery pack is switched to the battery pack with the higher voltage.
Illustratively, the actual voltage of the first battery pack P1 is 390V, and the actual voltage of the second battery pack P2 is 380V. If the first battery pack P1 is used for supplying power at present, switching is not carried out; if the second battery pack P2 is used for supplying power currently and the voltage threshold is 5V, switching to supply power by using the first battery pack P1; if the second battery pack P2 is currently used for power supply and the voltage threshold is 12V, no switching is performed.
When the first switch assembly M1 is in the second connection mode, the second switch assembly M2 is in the fifth connection mode, the fourth switch S4 and the seventh switch S7 are closed, and the fifth switch S5 and the sixth switch S6 are opened, at this time, it can be understood that power is supplied through the first battery assembly P1 and the second battery assembly P2 at the same time, and it can also be understood that power is supplied through the charging voltage directly provided by the charging anode C + and the charging cathode C-.
After the charging is finished, the first switch assembly M1 is in the second connection mode, and the second switch assembly M2 is in the fifth connection mode, so as to provide 400V power supply for the vehicle-mounted device.
In this embodiment, the charge and discharge module can satisfy the charge demand of 400V conventional charge mode and 800V fast charge mode, and the mobile unit realizes with relatively stable and the relatively lower 400V framework of cost, helps reduce cost, and can satisfy the fast charge demand, helps improving and uses experience.
The embodiment of the utility model provides a vehicle is still provided, including the charge-discharge module of above arbitrary.
Since the technical solution of this embodiment includes all technical solutions of the above charging and discharging module embodiment, at least all technical effects can be achieved, and details are not described here.
The foregoing is a preferred embodiment of the embodiments of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A charge-discharge module is characterized by comprising a first battery component, a second battery component, a first switch component, a second switch component, a charge anode, a charge cathode, a discharge anode and a discharge cathode;
the first switch assembly is configured to switch a series-parallel state of the first battery assembly and the second battery assembly between the charging positive electrode and the charging negative electrode;
the second switch assembly is configured to switch at least one of the first and second battery assemblies between the discharging positive electrode and the discharging negative electrode.
2. The charge and discharge module of claim 1, wherein the positive electrode of the first battery assembly is electrically connected to the positive charge electrode, and the negative electrode of the second battery assembly is electrically connected to the negative charge electrode;
the first switch assembly has a first connection mode in which the first battery assembly and the second battery assembly are connected in series between the positive charging electrode and the negative charging electrode, and a second connection mode in which the first battery assembly and the second battery assembly are connected in parallel between the positive charging electrode and the negative charging electrode.
3. The charge and discharge module of claim 2 wherein the first switch assembly comprises a first switch, a second switch, and a third switch;
one end of the first switch is electrically connected with the anode of the first battery assembly, and the other end of the first switch is electrically connected with the anode of the second battery assembly;
two ends of the second switch are respectively and electrically connected with the negative electrode of the first battery assembly and the positive electrode of the second battery assembly;
one end of the third switch is electrically connected with the negative electrode of the first battery assembly, and the other end of the third switch is electrically connected with the negative electrode of the second battery assembly.
4. The charge and discharge module according to any of claims 1 to 3, further comprising an intermediate node electrically connected to the negative electrode of the first battery assembly and/or the positive electrode of the second battery assembly;
the second switch assembly is electrically connected with the intermediate node, the charging positive electrode, the charging negative electrode, the discharging positive electrode and the discharging negative electrode respectively, and has a third connection mode and a fourth connection mode;
in the third connection mode, the intermediate node is electrically connected with the discharging positive electrode, and the charging negative electrode is electrically connected with the discharging negative electrode;
in the fourth connection mode, the charging positive electrode is electrically connected to the discharging positive electrode, and the intermediate node is electrically connected to the discharging negative electrode.
5. The charge and discharge module of claim 4 wherein the second switch assembly comprises a fourth switch, a fifth switch, a sixth switch, and a seventh switch;
one end of the fourth switch is electrically connected with the charging positive electrode, and the other end of the fourth switch is electrically connected with the discharging positive electrode;
one end of the fifth switch is electrically connected with the discharge anode, and the other end of the fifth switch is electrically connected with the intermediate node;
one end of the sixth switch is electrically connected with the intermediate node, and the other end of the sixth switch is electrically connected with the discharge cathode;
one end of the seventh switch is electrically connected with the discharging cathode, and the other end of the seventh switch is electrically connected with the charging cathode.
6. The charge and discharge module according to claim 1, wherein the rated charge voltage and the rated discharge voltage of the first battery pack and the second battery pack are both 400V.
7. The charge and discharge module of claim 1 further comprising a voltage sensor for collecting the voltage of the first battery assembly and the second battery assembly.
8. The charge and discharge module of claim 7, further comprising a controller electrically connected to the voltage sensor, the controller further electrically connected to both the first switch assembly and the second switch assembly.
9. A vehicle characterized by comprising the charge and discharge module according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221412178.3U CN217892560U (en) | 2022-06-01 | 2022-06-01 | Charge-discharge module and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221412178.3U CN217892560U (en) | 2022-06-01 | 2022-06-01 | Charge-discharge module and vehicle |
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| CN217892560U true CN217892560U (en) | 2022-11-25 |
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| CN202221412178.3U Active CN217892560U (en) | 2022-06-01 | 2022-06-01 | Charge-discharge module and vehicle |
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2022
- 2022-06-01 CN CN202221412178.3U patent/CN217892560U/en active Active
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