Vehicle wireless charging framework and automobile

Abstract

The utility model discloses a vehicle wireless charging framework and an automobile. The vehicle wireless charging framework comprises a power battery pack, a battery management module and a wireless charging receiving module. The wireless charging receiving module is connected with the power battery pack through the battery management module, and the battery management module is used for controlling charging and discharging of the power battery pack. The wireless charging receiving module is integrated in the battery pack circuit breaking unit adjacent to the power battery pack, so that the weight of the vehicle and the size of the charging framework are reduced.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to a vehicle wireless charging architecture and a vehicle. Background Art

[0002] In the high-power wireless charging system of new energy vehicles, the receiving device is installed on the chassis of the new energy vehicle. Due to the limitations of the chassis space of the new energy vehicle and the need for the receiving device to maintain a specified distance from the ground transmitting device, the new energy vehicle needs to strictly control the height size of the receiving device.

[0003] However, most of the related wireless charging receivers are above 55mm in height, and the thinnest is only 45mm, which is difficult to meet the installation requirements of many new energy vehicles. This seriously hinders the rapid development and mass production of new energy wireless charging vehicles, and also hinders the progress of mass production of wireless charging equipment. Utility Model Content

[0004] In view of the above problems, the present application provides a vehicle wireless charging architecture and a vehicle, which can solve the problem that the current vehicle power supply architecture wireless charging receiving device cannot meet the installation requirements of new energy vehicles.

[0005] In order to solve the above technical problems, the first aspect of the embodiment of the present application provides a vehicle wireless charging architecture, including: a power battery pack, a battery management module, and a wireless charging receiving module;

[0006] The wireless charging receiving module is connected to the power battery pack via the battery management module, and the battery management module is used to control the charging and discharging of the power battery pack;

[0007] The power battery pack and the wireless charging receiving module are arranged side by side at the bottom of the vehicle.

[0008] In the technical solution of the embodiment of the present application, the wireless charging receiving module is connected to the power battery pack via the battery management module. The battery management module is used to control the charging and discharging of the power battery pack. By arranging the power battery pack and the wireless charging receiving module side by side at the bottom of the vehicle, the height of the bottom of the vehicle can be increased, and the wireless charging receiving module can be integrated into the battery pack disconnect unit (Battery Disconnect Unit, BDU) adjacent to the power battery pack, thereby reducing the weight of the vehicle and the volume of the charging structure.

[0009] In some embodiments, the vehicle wireless charging architecture further includes:

[0010] A battery compartment, wherein the battery compartment is used to store the power battery pack.

[0011] In the technical solution of the embodiment of the present application, the power battery pack is arranged in the battery compartment, which can physically isolate the power battery pack from the external power distribution structure and improve the safety of the power battery pack.

[0012] In some embodiments, the vehicle wireless charging architecture further includes:

[0013] A battery circuit breaker assembly device is used to accommodate the battery management module.

[0014] In the technical solution of the embodiment of the present application, a BDU assembly can be arranged in the battery circuit breaker assembly device. By accommodating the battery management module in the battery circuit breaker assembly device, the battery management module can be physically isolated from the power battery pack, thereby improving the safety of the power battery pack.

[0015] In some embodiments, the battery disconnect assembly device and the battery compartment are arranged side by side at the bottom of the vehicle.

[0016] In the technical solution of the embodiment of the present application, the wireless charging receiving module is connected to the power battery pack via the battery management module, and the battery management module is used to control the charging and discharging of the power battery pack. By arranging the power battery pack and the wireless charging receiving module side by side at the bottom of the vehicle, the height of the bottom of the vehicle can be increased. In addition, the wireless charging receiving module is integrated into the battery pack disconnecting unit adjacent to the power battery pack, thereby reducing the weight of the vehicle and the volume of the charging structure.

[0017] In some embodiments, the lower bottom surface of the battery disconnect assembly is flush with the lower bottom surface of the battery compartment.

[0018] In the technical solution of the embodiment of the present application, the lower bottom surface of the battery circuit disconnect assembly device is flush with the lower bottom surface of the battery compartment, which can make full use of the space at the bottom of the vehicle. At the same height, the space utilization rate of the battery circuit disconnect assembly device is improved, and the wireless charging receiving module can be integrated into the BDU assembly adjacent to the power battery pack, thereby achieving the purpose of reducing the weight of the vehicle and the volume of the charging structure.

[0019] In some embodiments, the vehicle wireless charging architecture further includes:

[0020] A water cooling pipe is integrated in the battery circuit breaker assembly device, and the wireless charging receiving module, the water cooling pipe and the battery management module are stacked, and the water cooling pipe is used to adjust the temperature of the wireless charging receiving module and the battery management module.

[0021] In the technical solution of the embodiment of the present application, the BDU assembly of the vehicle can adopt an upper, middle and lower structure, with a wireless charging receiving module arranged on the bottom layer, a water cooling pipe arranged on the middle layer, and a battery management module arranged on the upper layer. The same set of water cooling pipes can be reused to cool the wireless charging receiving module and the battery management module without affecting the passability of the entire vehicle and the height of the bottom surface of the battery assembly. The water cooling pipes are convenient for cooling the wireless charging receiving module and the relays, copper busbars and controllers in the battery management module, which can reduce the volume and weight of the BDU assembly and increase the power density.

[0022] In some embodiments, the wireless charging receiving module and the battery management module share the same controller, and the controller integrates functions for managing the wireless charging receiving module and the battery management module.

[0023] In the technical solution of the embodiment of the present application, the wireless charging receiving module and the battery management module share the same controller, the wireless charging receiving module and the battery management module can be integrated in the battery circuit breaker assembly device, and the wireless charging receiving module and the battery management module are managed by the same controller, which can reduce the communication time between the wireless charging receiving module, the battery management module and the controller.

[0024] In some embodiments, the wireless charging receiving module includes: a receiving coil and an ACDC circuit;

[0025] The receiving coil is connected to the battery management module via the ACDC circuit, and the ACDC circuit is used to convert the alternating current induced by the receiving coil into direct current and output it to the battery management module.

[0026] In the technical solution of the embodiment of the present application, the wireless charging receiving module includes a receiving coil and an ACDC circuit. The receiving coil is arranged on the bottom layer, and the ACDC circuit is located between the receiving coil and the battery management module. It can be achieved by adding a smaller space on the basis of the original battery assembly without affecting the structure of the subframe.

[0027] In some embodiments, the vehicle wireless charging architecture further includes:

[0028] A shielding cover is used to isolate the ACDC circuit.

[0029] In the technical solution of the embodiment of the present application, in order to avoid the influence of the receiving coil on the ACDC circuit, the ACDC circuit can be isolated by a shielding cover. The positions of the BDU and the power battery pack are relatively fixed. The shielding cover can be pre-designed and assembled in the BDU, which reduces the influence of the shielding cover on the lower body and improves the transmission efficiency of the vehicle's wireless charging.

[0030] In some embodiments, the receiving coil includes a plurality of sub-coils, and the plurality of sub-coils are connected in parallel or in series.

[0031] In the technical solution of the embodiment of the present application, the wireless charging receiving module is separated from the magnetic core and the secondary coil of the ACDC circuit, and a plurality of sub-coils are arranged in parallel or in series to improve the transmission efficiency of the vehicle's wireless charging in a many-to-many manner. Moreover, a smaller space is added to the original battery assembly to accommodate the receiving coil, which does not affect the structure of the sub-frame, thereby improving the application scope of the vehicle's wireless charging architecture.

[0032] In some embodiments, the plurality of sub-coils are arranged in sequence.

[0033] In the technical solution of the embodiment of the present application, multiple sub-coils are arranged side by side, and adjacent sub-coils can be arranged overlappingly or partially overlappingly. Multiple sub-coils can be arranged in parallel, and the sub-coils are arranged parallel to the horizontal plane of the power battery pack at the bottom of the vehicle.

[0034] In some embodiments, the vehicle wireless charging architecture further includes:

[0035] A high-voltage load port, wherein the high-voltage load port is connected to the battery management module and the wireless charging receiving module respectively.

[0036] In the technical solution of the embodiment of the present application, the high-voltage load port can be connected to the wireless charging receiving module via the battery management module. After the radio received by the wireless charging receiving module is converted into high-voltage electricity, the high-voltage load port can directly power high-voltage loads such as motors and vehicle air conditioners.

[0037] In some embodiments, the vehicle wireless charging architecture further includes:

[0038] A charge and discharge port, wherein the charge and discharge port is connected to the battery management module, and the battery management module is also used to output the direct current output by the power battery pack through the charge and discharge port, or to charge the power battery pack according to the direct current input by the charge and discharge port.

[0039] In the technical solution of the embodiment of the present application, the charging and discharging port is connected to the power battery pack via a battery management module. When the vehicle does not have the conditions for wireless charging, direct current can be provided to the vehicle's wireless charging architecture through the charging and discharging port, and the current of the charging and discharging port charges the power battery pack via the battery management module.

[0040] In some embodiments, the battery management module includes: a first switch unit, a second switch unit;

[0041] The positive electrode of the high-voltage load port is connected to the positive electrode of the power battery pack via the first switch unit, and the negative electrode of the high-voltage load port is connected to the negative electrode of the power battery pack via the second switch unit.

[0042] In the technical solution of the embodiment of the present application, the first switch unit and the second switch unit are controlled by a controller, and the controller controls the connection state between the high-voltage load port and the power battery pack by controlling the switching state of the first switch unit and the second switch unit. In this way, the discharge process of the power battery pack can be controlled by the first switch unit and the second switch unit.

[0043] In some embodiments, the battery management module includes: a third switch unit, a fourth switch unit;

[0044] The positive electrode of the charge and discharge port is connected to the positive electrode of the power battery pack via the third switch unit, and the negative electrode of the charge and discharge port is connected to the negative electrode of the power battery pack via the fourth switch unit.

[0045] In the technical solution of the embodiment of the present application, the third switch unit and the fourth switch unit are controlled by a controller, and the controller controls the connection state between the charge and discharge port and the power battery pack by controlling the switch state of the third switch unit and the fourth switch unit. In this way, the charge and discharge process of the power battery pack can be controlled by the third switch unit and the fourth switch unit.

[0046] In some embodiments, the battery management module includes: a fifth switch unit, a pre-charge resistance unit;

[0047] The fifth switch unit is connected in series with the pre-charging resistor unit and then connected in parallel with the first switch unit.

[0048] In the technical solution of the embodiment of the present application, the fifth switch unit is controlled by the controller, and the wireless charging receiving module can pre-charge the power battery pack via the fifth switch unit and the pre-charging resistor unit.

[0049] A second aspect of the embodiments of the present application further provides a car, comprising the vehicle wireless charging architecture as described in any one of the above embodiments.

[0050] In the technical solution of the embodiment of the present application, the power battery pack and the wireless charging receiving module are arranged side by side at the bottom of the vehicle. The wireless charging receiving module is connected to the power battery pack via a battery management module. The battery management module is used to control the charging and discharging of the power battery pack. By integrating the wireless charging receiving module into the BDU assembly adjacent to the power battery pack, the weight of the vehicle and the volume of the charging structure can be reduced.

[0051] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0053] Figure 1 A schematic diagram of a first circuit structure of a vehicle wireless charging architecture provided in an embodiment of the present application;

[0054] Figure 2 A schematic diagram of a second circuit structure of a vehicle wireless charging architecture provided in an embodiment of the present application;

[0055] Figure 3 A schematic diagram of the horizontal structure of a vehicle wireless charging architecture provided in an embodiment of the present application;

[0056] Figure 4 A schematic cross-sectional structure diagram of a vehicle wireless charging architecture provided in an embodiment of the present application. DETAILED DESCRIPTION

[0057] The following embodiments of the technical solution of the present application will be described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0058] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0059] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0060] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The phrase "second connection port" at various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0061] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0062] In the description of the embodiments of the present application, the term "multi-frame" refers to more than two (including two).

[0063] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0064] Among the related wireless charging receiving devices, most of them are above 55mm in height, and the thinnest is only 45mm, which is difficult to meet the installation requirements of many new energy vehicles. This seriously hinders the rapid development and mass production of new energy wireless charging vehicles, and also hinders the progress of mass production of wireless charging equipment.

[0065] In order to solve the above technical problems, the present application embodiment provides a vehicle wireless charging architecture, see Figure 1 As shown, the vehicle wireless charging architecture in this embodiment includes: a power battery pack 100, a battery management module 200, and a wireless charging receiving module 300. The wireless charging receiving module 300 is connected to the power battery pack 100 via the battery management module 200. The battery management module 200 is used to control the charging and discharging of the power battery pack 100. The power battery pack 100 and the wireless charging receiving module 300 are arranged side by side at the bottom of the vehicle.

[0066] In this embodiment, the wireless charging receiving module 300 is connected to the power battery pack 100 via the battery management module 200. The battery management module 200 is used to control the charging and discharging of the power battery pack 100. By arranging the power battery pack 100 and the wireless charging receiving module 300 side by side at the bottom of the vehicle, the height of the bottom of the vehicle can be increased.

[0067] In some embodiments, a battery disconnect unit (BDU) assembly is arranged side by side with the power battery pack 100, and the wireless charging receiving module 300 can be integrated into the BDU assembly adjacent to the power battery pack 100, thereby reducing the weight of the vehicle and the volume of the charging structure.

[0068] In some embodiments, see Figure 2 As shown, the vehicle wireless charging architecture further includes a battery compartment 510 , and the battery compartment 510 is used to store the power battery pack 100 .

[0069] In this embodiment, the power battery pack 100 is disposed in the battery compartment 510 , so that the power battery pack 100 can be physically isolated from the external power distribution structure, thereby improving the safety of the power battery pack 100 .

[0070] In some embodiments, see Figure 2 As shown, the vehicle wireless charging architecture further includes a battery disconnect assembly device 520 , and the battery disconnect assembly device 520 is used to accommodate the battery management module 200 .

[0071] In this embodiment, a BDU assembly may be provided in the battery disconnect assembly device 520 . By accommodating the battery management module 200 in the battery disconnect assembly device 520 , the battery management module 200 may be physically isolated from the power battery pack 100 , thereby improving the safety of the power battery pack 100 .

[0072] In some embodiments, see Figure 3 As shown, the battery disconnect assembly device 520 and the battery compartment 510 are arranged side by side at the bottom of the vehicle.

[0073] In this embodiment, the wireless charging receiving module 300 is connected to the power battery pack 100 via the battery management module 200. The battery management module 200 is used to control the charging and discharging of the power battery pack 100. By arranging the power battery pack 100 and the wireless charging receiving module 300 side by side at the bottom of the vehicle, the height of the bottom of the vehicle can be increased. In addition, the wireless charging receiving module 300 is integrated into the battery pack disconnecting unit adjacent to the power battery pack 100, thereby reducing the weight of the vehicle and the volume of the charging structure.

[0074] In some embodiments, the bottom surface of the battery disconnect assembly 520 is flush with the bottom surface of the battery compartment 510 .

[0075] In this embodiment, the lower bottom surface of the battery disconnect assembly 520 is flush with the lower bottom surface of the battery compartment 510, which can make full use of the space at the bottom of the vehicle. At the same height, the space utilization rate of the battery disconnect assembly 520 is improved, and the wireless charging receiving module 300 can be integrated into the BDU assembly adjacent to the power battery pack 100, thereby achieving the purpose of reducing the weight of the vehicle and the volume of the charging structure.

[0076] In some embodiments, the cross-sectional shape of the battery compartment 510 matches the cross-sectional shape of the vehicle chassis, the cross-sectional dimensions of the battery compartment 510 match the cross-sectional dimensions of the vehicle chassis, and the cross-sectional shape of the battery compartment 510 may be rectangular.

[0077] In some embodiments, in combination Figure 3 As shown, the BDU assembly is disposed in a battery disconnect assembly device 520, and the cross-sectional shape of the battery disconnect assembly device 520 may be a trapezoid, and the front wheels of the vehicle may be disposed on both sides of the top of the trapezoid.

[0078] In some embodiments, see Figure 4 As shown, the vehicle wireless charging architecture also includes a water cooling pipe 540, which is integrated into the battery circuit breaker assembly 520. The wireless charging receiving module 300, the water cooling pipe 540 and the battery management module 200 are stacked. The water cooling pipe 540 is used to adjust the temperature of the wireless charging receiving module 300 and the battery management module 200.

[0079] In this embodiment, the BDU assembly of the vehicle can adopt an upper, middle and lower structure, with a wireless charging receiving module 300 arranged at the bottom layer, a water cooling pipe 540 arranged at the middle layer, and a battery management module 200 arranged at the upper layer. The same set of water cooling pipes 540 can be reused to cool the wireless charging receiving module 300 and the battery management module 200 without affecting the height of the bottom surface of the battery assembly. The water cooling pipes 540 are convenient for cooling the wireless charging receiving module 300 and the relays, copper busbars and controllers in the battery management module 200, which can reduce the volume and weight of the BDU assembly and increase the power density.

[0080] In some embodiments, the wireless charging receiving module 300 and the battery management module 200 share the same controller, and the controller integrates the functions of managing the wireless charging receiving module 300 and the battery management module 200.

[0081] In this embodiment, the wireless charging receiving module 300 and the battery management module 200 share the same controller, and the wireless charging receiving module 300 and the battery management module 200 can be integrated in the battery disconnect assembly device 520, and the wireless charging receiving module 300 and the battery management module 200 are managed by the same controller, which can reduce the communication time between the wireless charging receiving module 300, the battery management module 200 and the controller, and by reusing the same controller, the cost of the vehicle wireless charging architecture can be reduced.

[0082] In some embodiments, see Figure 2 As shown, the battery disconnect assembly device 520 is also provided with a battery management unit BMU, which is responsible for evaluating the data transmitted by the cell monitoring unit (cell monitoring unit, CMU). If the data is abnormal, the battery is protected, a request to reduce the current is issued, or the charging and discharging path is cut off to prevent the battery from exceeding the permitted use conditions, and the battery power and temperature are also managed. According to the previously designed control strategy, the parameters and states that need to be warned are judged, and the warning is sent to the vehicle controller.

[0083] In some embodiments, see Figure 2 As shown, a vehicle control unit VCU is also provided in the battery disconnect assembly device 520. The vehicle control unit VCU can be controlled by the controller to control the vehicle's braking, steering, suspension, etc. Specifically, the vehicle control unit VCU can control the vehicle's engine, transmission, braking system, and steering system.

[0084] In some embodiments, the battery management unit BMU, the vehicle control unit VCU, the battery management module 200, and the wireless charging receiving module 300 are controlled by the same controller.

[0085] In some embodiments, see Figure 2 As shown, the wireless charging receiving module 300 includes: a receiving coil 310 and an ACDC circuit 320. The receiving coil 310 is connected to the battery management module 200 via the ACDC circuit 320. The ACDC circuit 320 is used to convert the alternating current induced by the receiving coil 310 into direct current and output it to the battery management module 200.

[0086] In this embodiment, the wireless charging receiving module 300 includes a receiving coil 310 and an ACDC circuit 320. The receiving coil 310 is arranged at the bottom layer, and the ACDC circuit 320 is located between the receiving coil 310 and the battery management module 200. It can be realized by adding a smaller space on the basis of the original battery assembly without affecting the structure of the subframe.

[0087] In some embodiments, see Figure 4As shown, the vehicle wireless charging architecture further includes a shielding cover 530 , and the shielding cover 530 is used to isolate the ACDC circuit 320 .

[0088] In this embodiment, in order to avoid the influence of the receiving coil 310 on the ACDC circuit 320, the ACDC circuit 320 can be isolated by the shielding cover 530. The positions of the BDU and the power battery pack 100 are relatively fixed. The shielding cover 530 can be pre-designed and assembled in the BDU, which reduces the influence of the shielding cover 530 on the lower body and improves the transmission efficiency of the vehicle's wireless charging.

[0089] In some embodiments, the shielding cover 530 may be a concave structure, and the receiving coil 310 may be disposed in a groove of the shielding cover 530 , so as to prevent the magnetic field generated by the transmitting coil from affecting other components in the BDU assembly.

[0090] In some embodiments, shielding cover 530 may be aluminum foil.

[0091] In some embodiments, the magnetic core in the ACDC circuit 320 may be disposed below the water cooling pipe 540 , that is, the magnetic core in the ACDC circuit 320 may be disposed in a groove of the shielding cover 530 .

[0092] In some embodiments, in combination Figure 3 As shown, the receiving coil 310 includes a plurality of sub-coils, and the plurality of sub-coils are connected in parallel or in series.

[0093] In this embodiment, the wireless charging receiving module 300 and the magnetic core and the secondary coil of the ACDC circuit 320 are separated, and a plurality of sub-coils are arranged in parallel or in series to improve the transmission efficiency of the vehicle wireless charging in a many-to-many manner. Moreover, a smaller space is added to the original battery assembly to accommodate the receiving coil 310, which does not affect the structure of the sub-frame and improves the application scope of the vehicle wireless charging architecture.

[0094] In some embodiments, a plurality of sub-coils are arranged in sequence.

[0095] In this embodiment, multiple sub-coils are arranged side by side, and adjacent sub-coils may be arranged overlappingly or partially overlappingly. Multiple sub-coils may be arranged in parallel, and the sub-coils are arranged parallel to the horizontal plane of the power battery pack 100 at the bottom of the vehicle.

[0096] In some embodiments, see Figure 2 As shown, the vehicle wireless charging architecture further includes a high-voltage load port 521 , which is connected to the battery management module 200 and the wireless charging receiving module 300 , respectively.

[0097] In this embodiment, the high-voltage load port 521 can be connected to the wireless charging receiving module 300 via the battery management module 200. After the radio received by the wireless charging receiving module 300 is converted into high-voltage electricity, the high-voltage load port 521 can directly power high-voltage loads such as motors and vehicle air conditioners.

[0098] In some embodiments, see Figure 2 As shown, the high-voltage load port 521 is disposed on the battery disconnect assembly device 520 , and the battery disconnect assembly device 520 can supply power to the high-voltage load distribution circuit inside the vehicle via the high-voltage load port 521 .

[0099] In some embodiments, see Figure 2 As shown, the vehicle wireless charging architecture also includes a charging and discharging port 522, which is connected to the battery management module 200. The battery management module 200 is also used to output the DC power output by the power battery pack 100 through the charging and discharging port 522, or to charge the power battery pack 100 according to the DC power input by the charging and discharging port 522.

[0100] In this embodiment, the charge and discharge port 522 is connected to the power battery pack 100 via the battery management module 200. When the vehicle does not have the conditions for wireless charging, direct current can be provided to the vehicle's wireless charging architecture through the charge and discharge port 522. The current of the charge and discharge port 522 charges the power battery pack 100 via the battery management module 200.

[0101] In some embodiments, see Figure 2 As shown, the charge and discharge port 522 is disposed on the battery disconnect assembly device 520 , and the battery disconnect assembly device 520 can be connected to a charging pile or discharge externally via the charge and discharge port 522 .

[0102] In some embodiments, see Figure 2 As shown, the battery management module 200 includes: a first switch unit K1 and a second switch unit K2; the positive pole of the high-voltage load port 521 is connected to the positive pole of the power battery pack 100 via the first switch unit K1, and the negative pole of the high-voltage load port 521 is connected to the negative pole of the power battery pack 100 via the second switch unit K2.

[0103] In this embodiment, the first switch unit K1 and the second switch unit K2 are controlled by a controller. The controller controls the connection state between the high-voltage load port 521 and the power battery pack 100 by controlling the switching states of the first switch unit K1 and the second switch unit K2. In this way, the discharge process of the power battery pack 100 can be controlled by the first switch unit K1 and the second switch unit K2.

[0104] In some embodiments, the first switch unit K1 and the second switch unit K2 may be relays.

[0105] In some embodiments, see Figure 2 As shown, the battery management module 200 includes: a third switch unit K3 and a fourth switch unit K4; the positive pole of the charge and discharge port 522 is connected to the positive pole of the power battery pack 100 via the third switch unit K3, and the negative pole of the charge and discharge port 522 is connected to the negative pole of the power battery pack 100 via the fourth switch unit K4.

[0106] In this embodiment, the third switch unit K3 and the fourth switch unit K4 are controlled by a controller. The controller controls the connection state between the charge and discharge port 522 and the power battery pack 100 by controlling the switch state of the third switch unit K3 and the fourth switch unit K4. In this way, the charge and discharge process of the power battery pack 100 can be controlled by the third switch unit K3 and the fourth switch unit K4.

[0107] In some embodiments, the third switch unit K3 and the fourth switch unit K4 may be relays.

[0108] In some embodiments, see Figure 2 As shown, the battery management module 200 includes: a fifth switch unit K5 and a pre-charging resistor unit R0; the fifth switch unit K5 is connected in series with the pre-charging resistor unit R0 and then connected in parallel with the first switch unit K1.

[0109] In this embodiment, the fifth switch unit K5 is controlled by the controller, and the wireless charging receiving module 300 can pre-charge the power battery pack 100 via the fifth switch unit K5 and the pre-charging resistor unit R0 .

[0110] In some embodiments, the fifth switch unit K5 may be a relay.

[0111] In some embodiments, see Figure 2 As shown, a current limiting resistor Rs is provided between the fifth switch unit K5 and the negative electrode of the power battery pack 100. The current limiting resistor Rs can limit the loop current of the power battery pack 100. The controller can also sample the output current of the power battery pack 100 through the current limiting resistor Rs, and control the battery management module 200 according to the sampling result to avoid excessive charging current or discharging current of the power battery pack 100 causing line damage.

[0112] In some embodiments, see Figure 2 As shown, a first fuse F1 is provided between the first switch unit K1 and the positive electrode of the power battery pack 100. The first fuse F1 can disconnect the circuit when the charging current or discharging current of the power battery pack 100 is overloaded, thereby preventing the charging current or discharging current of the power battery pack 100 from being too large and causing line damage.

[0113] In some embodiments, see Figure 2 As shown, a second fuse F2 is also provided between the ACDC circuit 320 and the battery management module 200. The second fuse F2 can detect the current input to the ACDC circuit 320 when the vehicle wireless charging architecture is performing wireless charging, and disconnect the loop when the current input to the ACDC circuit 320 is overloaded, so as to prevent the current output by the wireless induction from being too large, causing damage to the line or the power battery pack 100.

[0114] An embodiment of the present application also provides a car, which includes a vehicle wireless charging architecture as described in any one of the above embodiments.

[0115] In the technical solution of the embodiment of the present application, the power battery pack 100 and the wireless charging receiving module 300 are arranged side by side at the bottom of the vehicle. The wireless charging receiving module 300 is connected to the power battery pack 100 via the battery management module 200. The battery management module 200 is used to control the charging and discharging of the power battery pack 100. By integrating the wireless charging receiving module 300 into the BDU assembly adjacent to the power battery pack 100, the weight of the vehicle and the volume of the charging structure can be reduced.

[0116] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into a processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0117] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0118] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the electronic device embodiments described above are merely schematic. For example, the division of modules or units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0119] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0120] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0121] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A vehicle wireless charging architecture, characterized in that: include: Power battery pack, battery management module, wireless charging receiving module; The wireless charging receiving module is connected to the power battery pack via the battery management module, and the battery management module is used to control the charging and discharging of the power battery pack; The power battery pack and the wireless charging receiving module are arranged side by side at the bottom of the vehicle.

2. The vehicle wireless charging architecture according to claim 1, characterized in that: The vehicle wireless charging architecture further includes: A battery compartment, wherein the battery compartment is used to store the power battery pack.

3. The vehicle wireless charging architecture according to claim 2, characterized in that: The vehicle wireless charging architecture further includes: A battery circuit breaker assembly device is used to accommodate the battery management module.

4. The vehicle wireless charging architecture according to claim 3, characterized in that: The battery disconnect assembly device and the battery compartment are arranged side by side at the bottom of the vehicle.

5. The vehicle wireless charging architecture according to claim 4, characterized in that: The lower bottom surface of the battery disconnect assembly device is flush with the lower bottom surface of the battery compartment.

6. The vehicle wireless charging architecture according to claim 3, characterized in that: The vehicle wireless charging architecture further includes: A water cooling pipe is integrated in the battery circuit breaker assembly device, and the wireless charging receiving module, the water cooling pipe and the battery management module are stacked, and the water cooling pipe is used to adjust the temperature of the wireless charging receiving module and the battery management module.

7. The vehicle wireless charging architecture according to claim 1, characterized in that: The wireless charging receiving module and the battery management module share the same controller, and the controller integrates the function of managing the wireless charging receiving module and the battery management module.

8. The vehicle wireless charging architecture according to claim 1, characterized in that: The wireless charging receiving module includes: a receiving coil and an ACDC circuit; The receiving coil is connected to the battery management module via the ACDC circuit, and the ACDC circuit is used to convert the alternating current induced by the receiving coil into direct current and output it to the battery management module.

9. The vehicle wireless charging architecture according to claim 8, characterized in that: The vehicle wireless charging architecture further includes: A shielding cover is used to isolate the ACDC circuit.

10. The vehicle wireless charging architecture according to claim 8, characterized in that: The receiving coil includes a plurality of sub-coils, and the plurality of sub-coils are connected in parallel or in series.

11. The vehicle wireless charging architecture according to claim 10, characterized in that: The plurality of sub-coils are arranged in sequence.

12. The vehicle wireless charging architecture according to any one of claims 1 to 11, characterized in that: The vehicle wireless charging architecture further includes: A high-voltage load port, wherein the high-voltage load port is connected to the battery management module and the wireless charging receiving module respectively.

13. The vehicle wireless charging architecture according to claim 12, characterized in that: The vehicle wireless charging architecture further includes: A charge and discharge port, wherein the charge and discharge port is connected to the battery management module, and the battery management module is also used to output the direct current output by the power battery pack through the charge and discharge port, or to charge the power battery pack according to the direct current input by the charge and discharge port.

14. The vehicle wireless charging architecture according to claim 13, characterized in that: The battery management module includes: a first switch unit and a second switch unit; The positive electrode of the high-voltage load port is connected to the positive electrode of the power battery pack via the first switch unit, and the negative electrode of the high-voltage load port is connected to the negative electrode of the power battery pack via the second switch unit.

15. The vehicle wireless charging architecture according to claim 14, characterized in that: The battery management module includes: a third switch unit and a fourth switch unit; The positive electrode of the charge and discharge port is connected to the positive electrode of the power battery pack via the third switch unit, and the negative electrode of the charge and discharge port is connected to the negative electrode of the power battery pack via the fourth switch unit.

16. The vehicle wireless charging architecture according to claim 15, characterized in that: The battery management module includes: a fifth switch unit and a pre-charging resistance unit; The fifth switch unit is connected in series with the pre-charging resistor unit and then connected in parallel with the first switch unit.

17. A car, characterized in that: The automobile comprises the vehicle wireless charging architecture as described in any one of claims 1 to 16.

Images