WO2024045793A1

WO2024045793A1 - Vertically-arranged wireless charging battery box

Info

Publication number: WO2024045793A1
Application number: PCT/CN2023/101732
Authority: WO
Inventors: 叶国强; 熊栋; 陈涛; 宋金庄; 吴送娣; 陈攀; 王正伟; 徐喜红; 倪海华
Original assignee: 宁波信泰机械有限公司
Priority date: 2022-08-30
Filing date: 2023-06-21
Publication date: 2024-03-07
Also published as: CN219115256U

Abstract

The present invention relates to the technical field of battery cases. Provided is a vertically-arranged wireless charging battery box. The wireless charging battery box comprises a tray member, a frame member, a bottom protection plate, a wireless receiver rectifier and a wireless receiver coil module, wherein the frame member is connected to the periphery of the tray member, the bottom protection plate is mounted on a lower portion of the tray member, the wireless receiver coil module is arranged in the bottom protection plate, the wireless receiver rectifier is arranged on the tray member, the wireless receiver rectifier is linearly and electrically connected to the wireless receiver coil module by means of a wire harness, and the wireless receiver coil module and the wireless receiver rectifier are arranged in the battery box in a perpendicular direction. The present invention has the advantage that a wireless charging receiver is integrated into the battery box, so that costs are greatly reduced; and by means of the integration of the wireless receiver and the battery box, the cost of the wireless charging module is reduced, a relatively wide mounting space is provided, and the added value of the battery box is also increased.

Description

A vertically arranged wireless charging battery box

Technical field

The invention belongs to the technical field of battery boxes and relates to a vertically arranged wireless charging battery box.

Background technique

In order to save energy and reduce environmental pollution, electric vehicles have been vigorously promoted by countries around the world. Due to limitations in battery capacity and charging infrastructure, charging problems have become the most important bottleneck in the development of electric vehicles. Because wireless charging technology can solve the interface limitations and safety issues faced by traditional conductive charging, it has gradually developed into the main method of charging electric vehicles. However, static wireless charging and wired charging also have problems such as frequent charging, short cruising range, large battery consumption and high cost. Especially for public transportation vehicles such as electric buses, their continuous endurance is particularly important. In this context, dynamic wireless charging technology for electric vehicles emerged as the times require, providing real-time energy supply to driving electric vehicles in a non-contact manner.

The wireless charging technology of electric vehicles transmits electric energy in the form of high-frequency alternating magnetic field to the vehicle receiving end electric energy pickup mechanism running within a certain range on the ground through the power supply rail buried under the ground, and then supplies power to the on-board energy storage equipment, which can make Electric vehicles are equipped with a small number of battery packs to extend their driving range, and at the same time, electric energy supply becomes safer and more convenient. The main parameters of dynamic wireless power supply technology include power transmission distance, power, efficiency, coupling mechanism side shift adaptability, electromagnetic compatibility, etc. Therefore, the development of dynamic wireless power supply systems with high power, high efficiency, strong side-shift adaptability, low electromagnetic radiation, and moderate cost has become a major research focus at major domestic and foreign research institutions.

The development of the new energy industry, especially the rapid growth of pure electric vehicles, will inevitably put forward higher requirements for the diversification and convenience of charging methods for electric vehicles. As an emerging technology, wireless charging technology is mainly used in commercial operations to charge low-power devices such as mobile phones, computers, and Walkmans. It is still a brand-new concept in the field of electric vehicles. As wireless charging technology matures, electric vehicles Cars will be the most potential market for wireless charging equipment. Existing car wireless receivers are mostly installed in the front subframe, which has large design space limitations, especially the coil laying area limit. Wireless charging application scenarios with high power and large coils have greater design space limitations. Moreover, the casing of the automotive wireless receiver, especially the coil tray, is mostly made of plastic parts, which has poor impact resistance.

Contents of the invention

The technical problem to be solved by the present invention is to provide a vertically arranged wireless charging battery box in view of the current situation of the existing technology, integrating the wireless charging receiver into the battery box, and giving full play to the wider XY-direction design of the battery box. space, while greatly improving the added value of new energy battery boxes.

The technical solution adopted by the present invention to solve the above technical problems is: a vertically arranged wireless charging battery box, which is characterized in that it includes a tray member, a frame member, a bottom guard, a wireless receiver rectifier and a wireless receiver coil module. The above-mentioned frame part is connected around the pallet part, the bottom guard plate is installed on the lower part of the pallet part, the described wireless receiver coil module is arranged in the bottom guard plate, the wireless receiver rectifier is arranged on the pallet part, and the wireless receiver rectifier passes through The wire harness is electrically connected to the wireless receiver coil module, and both the wireless receiver coil module and the wireless receiver rectifier are arranged vertically in the battery box.

In the above-mentioned vertically arranged wireless charging battery box, the wireless receiver coil module includes a coil tray, a coil, a ferrite and a wireless charging water-cooling plate. The coil is located in the coil tray, and the ferrite is located on the upper part of the coil. , the wireless charging water-cooling plate is covered on the upper part of the coil tray and thermal conductive glue is filled between the two. The overall module composed of the coil tray, coil, ferrite and wireless charging water-cooling plate is installed between the bottom guard and the tray.

In the above-mentioned vertically arranged wireless charging battery box, the bottom guard has a receiving slot for placing the wireless receiver coil module.

As a second way, in the above-mentioned vertically arranged wireless charging battery box, a tray water-cooling plate is connected to the lower surface of the tray member, and the wireless receiver coil module is installed between the lower part of the tray water-cooling plate and the bottom guard plate. The wireless receiver rectifier is located on the upper part of the water-cooling plate of the tray.

In the above-mentioned vertically arranged wireless charging battery box, the wireless receiver coil module includes a coil tray, a coil and a ferrite. The coil is located in the coil tray, the ferrite is located on the upper part of the coil, and the tray water-cooling plate is located Above the wireless receiver coil module, thermal conductive glue is filled between the wireless receiver coil module, the tray member and the tray water-cooling plate.

In the above-mentioned vertically arranged wireless charging battery box, EPDM sealing gaskets are provided on both sides of the coil tray and the tray member.

As a third way, in the above-mentioned vertically arranged wireless charging battery box, the wireless receiver coil module includes a coil and a ferrite, the coil is embedded in the bottom guard, and the ferrite The body is located on the upper part of the coil, and the tray water-cooling plate is located above the wireless receiver coil module. Thermal conductive glue is filled between the wireless receiver coil module, the bottom guard plate and the tray water-cooling plate.

In the above-mentioned vertically arranged wireless charging battery box, EPDM gaskets are provided on both sides of the ferrite and the tray member.

In addition, the wireless receiver coil module and the wireless receiver rectifier are arranged vertically offset.

Compared with the existing technology, the advantage of the present invention is that the wireless charging receiver is integrated into the battery box, giving full play to the wider design space of the battery box in the XY direction, and at the same time greatly improving the added value of the new energy battery box. The patented cooling is used in conjunction with the brazed water-cooling plate of the battery box. The water-cooling plate is used to simultaneously cool the heat of the battery module and the wireless receiver coil module. In terms of structure, the composite bottom guard plate of the battery box is used to maximize the strength and performance of the bottom guard plate. At the same time, it can also be used as an installation carrier for the wireless receiver coil module. Therefore, for most brazed water-cooled plate battery boxes, it only needs to be replaced with a composite bottom guard plate, and the overall structure has high compatibility. In terms of cost, omitting the wireless charging module The shell and water cooling greatly reduce its cost. Through the integration of the wireless receiver and the battery box, the invention not only reduces the cost of the wireless charging module, provides a wider installation space, but also increases the added value of the battery box.

Description of drawings

Figure 1 is a schematic diagram of the modular integrated exploded structure of this vertically arranged wireless charging battery box;

Figure 2 is a schematic cross-sectional structural diagram of Figure 1 after assembly;

Figure 3 is a schematic structural diagram of the wireless receiver coil module in Figure 1;

Figure 4 is a schematic diagram of the non-embedded integrated coil structure of this vertically arranged wireless charging battery box;

Figure 5 is a schematic cross-sectional structural diagram of Figure 4 after assembly;

Figure 6 is a schematic structural diagram of the wireless receiver coil module in Figure 4;

Figure 7 is a schematic diagram of the embedded integrated integrated structure of the coil of this vertically arranged wireless charging battery box;

Figure 8 is a schematic cross-sectional structural diagram of Figure 7 after assembly;

FIG. 9 is a schematic structural diagram of the wireless receiver coil module in FIG. 7 .

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

In the description of the present invention, it should be understood that the terms "center", "lateral", "vertical", "front", "rear", "left", "right", "upper", "lower", "vertical" The orientations or positional relationships indicated by "straight", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing and simplifying the present invention. description, rather than an indication or implication that the device or component referred to must It must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be construed as limiting the scope of the present invention.

In the figure, the tray member 100; the frame member 200; the bottom guard 300; the receiving slot 301; the wireless receiver rectifier 400; the wireless receiver coil module 500; the coil tray 501; the coil 502; the ferrite 503; the wireless charging water cooling plate 504 ; Thermal conductive glue 600; EPDM gasket 700; Tray water-cooling plate 800.

Example 1

As shown in Figure 1, this vertically arranged wireless charging battery box includes a tray member 100, a frame member 200, a bottom guard 300, a wireless receiver rectifier 400 and a wireless receiver coil module 500. The frame member 200 is connected to the tray member 100. All around, the bottom guard 300 is installed on the lower part of the pallet 100. The bottom guard 300 can be made of composite materials. The wireless receiver coil module 500 is arranged in the bottom guard 300. The wireless receiver rectifier 400 is arranged on the pallet 100. , the wireless receiver rectifier 400 is electrically connected to the wireless receiver coil module 500 through a wire harness, and both the wireless receiver coil module 500 and the wireless receiver rectifier 400 are arranged vertically in the battery box. This patent realizes wireless charging It is mainly composed of a wireless receiver rectifier 400 and a wireless receiver coil module 500. The wireless receiver coil module 500 receives the magnetic field lines from the ground transmitter and generates electric energy. After the rectifier voltage is adjusted, it is transmitted to the BMS electronic control of the battery box in the form of direct current. The overall layout of the system is vertically arranged in the battery box, that is, the wireless receiver coil module 500 is arranged in the bottom guard 300, and the wireless receiver rectifier 400 is separately arranged above it, according to the degree of integration from low to high. Differently, the vertical direction of this patent can be subdivided into the following three types: modular integration, non-embedded coil integration, and embedded coil integration. Whether the tray member 100 of the battery box module is integrated with water cooling determines whether the module Whether the water cooling system can be shared with the wireless receiver coil module 500.

For the modular integration method, as shown in Figure 2 and Figure 3, the wireless receiver coil module 500 includes a coil tray 501, a coil 502, a ferrite 503 and a wireless charging water-cooling plate 504. The coil 502 is located in the coil tray 501, the ferrite 503 is located on the upper part of the coil 502, and the wireless charging water-cooling plate 504 covers the upper part of the coil tray 501. Thermal conductive glue 600 is filled between the two. Thermal conductive glue 600 mainly plays the dual roles of connection and heat conduction. The overall module composed of coil tray 501, coil 502, ferrite 503 and wireless charging water cooling plate 504 is installed on the bottom guard 300 Between the bottom guard 300 and the tray 100, the bottom guard 300 has a receiving slot 301 for placing the wireless receiver coil module 500. Here, this patent reserves an installation space for the wireless receiver coil module 500 on the bottom guard 300. The wireless receiver coil After the module 500 is used as a small assembly, its coil tray 501 is separately glued to the bottom guard 300, and the wireless receiver rectifier 400 is separately arranged above the coil 502. This solution is due to the battery box tray 100 itself. There is no integrated water cooling, so the wireless receiver coil module 500 still comes with a wireless charging water cooling plate 504. The cooling water source of the wireless charging water cooling plate 504 is provided by the battery box.

Example 2

Regarding the non-embedded integration method of the coil, as shown in Figures 4, 5 and 6, a tray water-cooling plate 800 is connected to the lower surface of the tray member 100, and the wireless receiver coil module 500 is installed between the lower part of the tray water-cooling plate 800 and Between the bottom shield 300, the wireless receiver coil module 500 includes a coil tray 501, a coil 502 and a ferrite 503. The coil 502 is located in the coil tray 501, the ferrite 503 is located on the upper part of the coil 502, and the tray water-cooling plate 800 is located on the wireless Above the receiver coil module 500, thermal conductive glue 600 is filled between the wireless receiver coil module 500, the tray 100 and the tray water-cooling plate 800. EPDM sealing pads 700 are provided on both sides of the coil tray 501 and the tray 100. Here EPDM The sealing gasket 700 can ensure the sealing performance on both sides. In this embodiment, the non-embedded type means that the coil is not embedded in the bottom guard 300. This integration solution still retains the coil tray 501 of the wireless receiver coil module 500. The coil tray 501 is glued to the bottom guard 300, but the built-in wireless charging water-cooling plate 504 on the upper part is completely eliminated, and is replaced by a tray water-cooling plate 800 using a battery box. Here, the tray water-cooling plate 800 can be a brazed water-cooling plate, that is, the battery box module and the wireless receiver coil module 500 share a tray water-cooling plate 800 for cooling. The wireless receiver rectifier 400 and the wireless receiver coil module 500 use The wiring harness is connected, and all are cooled by the tray water-cooling plate 800 of the battery box.

Example 3

For the coil embedded integration method, as shown in Figures 7, 8 and 9, a tray water-cooling plate 800 is connected to the lower surface of the tray member 100, and the wireless receiver coil module 500 is installed on the lower part and bottom of the tray water-cooling plate 800. Between the shields 300, the wireless receiver coil module 500 includes a coil 502 and a ferrite 503. The coil 502 is embedded in the bottom shield 300, the ferrite 503 is located above the coil 502, and the tray water-cooling plate 800 is located on the wireless receiver. Above the coil module 500, thermal conductive glue 600 is filled between the wireless receiver coil module 500, the bottom guard 300 and the tray water-cooling plate 800. EPDM sealing pads are provided on both sides of the ferrite 503 and the tray member 100. , the embedded type means that the coil 502 is embedded in the bottom guard 300. During the forming process of the bottom guard 300, the coil 502 is also embedded in the bottom guard 300 and formed into one piece. This integration solution not only cancels the wireless receiver coil The coil tray 501 of the module 500 also cancels the built-in wireless charging water-cooling plate 504 on the upper part, and uses the tray water-cooling plate 800 of the battery box for cooling instead. That is, the battery box module and the wireless receiver coil module 500 share a tray water-cooling The wireless receiver rectifier 400 and the wireless receiver coil module 500 are connected by a wire harness, and both are cooled by the tray water-cooling plate 800 of the battery box. While exerting the strength performance of the bottom guard 300, it can also be used as a Mounting carrier for wireless receiver coil module 500. Therefore, for most brazed water-cooled plate battery boxes, only the composite bottom guard 300 is needed. The overall structure has high compatibility. In terms of cost, the casing and water cooling of the wireless charging module are omitted, which greatly reduces its cost.

In summary, the battery box bottom guard 300 takes advantage of its high strength, complex molding, and no magnetic field interference. It integrates the wireless charging receiving end module. Through the connection between the wireless charging module and the battery box, Integration not only reduces the cost of the wireless charging module, provides a wider installation space, but also increases the added value of the battery box.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the technical field to which the present invention belongs can make various modifications or additions to the described specific embodiments or substitute them in similar ways, but this will not deviate from the scope defined by the spirit of the present invention.

Claims

A vertically arranged wireless charging battery box, characterized by including a tray member, a frame member, a bottom guard, a wireless receiver rectifier and a wireless receiver coil module. The frame member is connected around the tray member, and the bottom guard is The board is installed on the lower part of the pallet, the wireless receiver coil module is arranged in the bottom guard plate, the wireless receiver rectifier is arranged on the pallet, the wireless receiver rectifier is electrically connected to the wireless receiver coil module through the wiring harness, and the wireless receiver rectifier is electrically connected to the wireless receiver coil module through the wiring harness. The receiver coil module and the wireless receiver rectifier are arranged vertically in the battery box.
A vertically arranged wireless charging battery box according to claim 1, characterized in that the wireless receiver coil module includes a coil tray, a coil, a ferrite and a wireless charging water-cooling plate, and the coil is located in the coil tray , the ferrite is located on the upper part of the coil, the wireless charging water-cooling plate is covered on the upper part of the coil tray, and thermal conductive glue is filled between the two. The overall module composed of the coil tray, coil, ferrite and wireless charging water-cooling plate is installed on the bottom guard plate and between pallet pieces.
A vertically arranged wireless charging battery box according to claim 1 or 2, characterized in that the bottom guard has a receiving slot for placing the wireless receiver coil module.
A vertically arranged wireless charging battery box according to claim 1, characterized in that a pallet water-cooling plate is connected to the lower surface of the pallet member, and the wireless receiver coil module is installed at the lower part of the pallet water-cooling plate and the bottom guard plate. Between them, the wireless receiver rectifier is located on the upper part of the water-cooling plate of the tray.
A vertically arranged wireless charging battery box according to claim 4, characterized in that the wireless receiver coil module includes a coil tray, a coil and a ferrite, the coil is located in the coil tray, and the ferrite is located in On the upper part of the coil, the tray water-cooling plate is located above the wireless receiver coil module. Thermal conductive glue is filled between the wireless receiver coil module, the tray member and the tray water-cooling plate.
A vertically arranged wireless charging battery box according to claim 5, characterized in that EPDM sealing pads are provided on both sides of the coil tray and the tray member.
A vertically arranged wireless charging battery box according to claim 4, characterized in that the wireless receiver coil module includes a coil and a ferrite, the coil is embedded in the bottom guard plate, and the iron The oxygen body is located on the upper part of the coil, and the tray water-cooling plate is located above the wireless receiver coil module. Thermal conductive glue is filled between the wireless receiver coil module, the bottom guard plate and the tray water-cooling plate.
A vertically arranged wireless charging battery box according to claim 7, characterized in that the coil is embedded in the bottom guard and is integrally formed with the bottom guard.
A vertically arranged wireless charging battery box according to claim 7, characterized in that EPDM sealing pads are provided on both sides of the ferrite and the tray member.
A vertically arranged wireless charging battery box according to claim 1, characterized in that the wireless receiver coil module and the wireless receiver rectifier are arranged vertically offset.