An electric vehicle battery pack and an electric vehicle charging system

Abstract

The application provides an electric vehicle battery box and an electric vehicle charging system, wherein the battery box comprises a battery box body located in the middle of the battery box, a bottom plate located at the bottom of the battery box, a top cover located at the top of the battery box, and a hoisting positioning structure, the battery box is a cuboid, the battery box body is integrally formed by welding a plurality of pipe beams, and the hoisting positioning structure comprises a first positioning structure arranged at the top of the battery box and a second positioning structure arranged at the side of the battery box. The pipe beams of the application are made of high-strength steel material QSte700, which can effectively strengthen the impact resistance of the vertical direction of the battery box body, has high structural strength and light weight, and facilitates hoisting during replacement of the battery box. A plurality of battery support beams are arranged on the battery box body, the battery support beams are fixed on the battery box body through support beam supports, and after the battery pack and the battery support beams are installed, the battery pack can be pushed into the battery box structure to realize fastening of the battery pack.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and in particular to an electric vehicle battery box and an electric vehicle charging system. Background Art

[0002] Electric vehicles use electricity instead of oil, which can achieve zero emissions and low noise, and are an important means to solve energy and environmental problems. At present, there are mainly two modes for electric heavy trucks in China: charging and battery swapping. The existing battery pack box structures of charging and battery swapping heavy trucks all adopt steel structure welding. The charging and discharging of electric heavy trucks are realized through the electrical connectors installed inside the battery box. Since the operating conditions of trucks are relatively harsh, the battery pack structure installed on them requires a relatively high strength. However, the steel battery box is relatively large in volume and heavy in weight, which affects the cargo capacity of electric heavy trucks. Generally, an electric heavy truck can only carry one set of battery boxes during cargo transportation and needs to replace the battery box in a timely manner. Summary of the Invention

[0003] In view of the above problems, embodiments of the present invention are proposed to provide an electric vehicle battery box and an electric vehicle charging system that can overcome or at least partially solve the above problems.

[0004] To solve the above problems, on the one hand, embodiments of the present invention disclose an electric vehicle battery box, including:

[0005] A battery box main body, which is located in the middle of the battery box. A number of battery support beams are arranged in the middle of the battery box main body, and the battery support beams are fixed to the side walls of the battery box through support beam brackets;

[0006] A bottom plate, which is located at the bottom of the battery box;

[0007] A top cover, which is located at the top of the battery box;

[0008] A hoisting and positioning structure, which includes a first positioning structure and a second positioning structure. The first positioning structure is arranged at the top of the battery box, and the second positioning structure is arranged on both sides of the battery box.

[0009] Further, the battery box is in a cuboid shape, and the battery box main body is integrally formed by welding a number of pipe beams.

[0010] Further, the cross-section of the pipe beam is in a "day" shape or a rectangle.

[0011] Further, the pipe beam adopts high-strength steel material QSte700, and the size of the pipe beam is 40mm * 30mm * 1.5mm, 60mm * 40mm * 3mm or 120mm * 68mm * 2mm.

[0012] Furthermore, a positioning and locking mechanism is provided at the bottom of the battery box body, and a positioning plate is provided on the base plate. The positioning and locking mechanism is connected to the positioning plate on the base plate.

[0013] Furthermore, the top cover adopts a sloping structure, the top cover is a multi-ribbed support structure, and the top cover is integrally formed by bending and welding steel plates.

[0014] Furthermore, the steel plate of the top cover has a thickness of 1 mm.

[0015] Furthermore, the battery box has a skin on its side, and the skin has mounting holes. The skin is fixed to the battery box body with bolts, and the battery box body is fixed with rivet nuts.

[0016] On the other hand, the present invention also discloses an electric vehicle charging system, wherein the electric vehicle in the system is equipped with the aforementioned electric vehicle battery box, and the system includes a battery box storage platform and a hoisting mechanism.

[0017] Furthermore, the battery box storage platform includes a battery box storage area and a battery box turnover channel. The battery box turnover channel is used to transfer the battery boxes, and the battery box storage area is used to store the battery boxes.

[0018] Furthermore, the hoisting mechanism is located above the battery box storage platform and is used to hoist the battery box between the parking area of ​​the vehicle waiting to have its battery replaced and the turnover channel. The hoisting mechanism is adapted to the hoisting and positioning structure on the battery box.

[0019] Based on the above description, the battery box of the present invention includes a battery box body located in the middle of the battery box, a bottom plate located at the bottom of the battery box, a top cover located at the top of the battery box, and a lifting and positioning structure. The battery box body is integrally formed by welding several pipe beams. The lifting and positioning structure includes a first positioning structure set on the top of the battery box and a second positioning structure set on the side of the battery box. The embodiments of the present invention have the following advantages: 1. The pipe beams of the present invention are all made of high-strength steel material QSte700, which can effectively enhance the vertical impact resistance of the battery box body, with high structural strength and light weight, facilitating the lifting during battery box replacement; 2. Several layers of battery support beams are provided on the battery box body. The battery support beams are fixed to the battery box body by support beam brackets. After the battery pack is installed with the battery support beams, it can be pushed into the battery box structure to achieve the fastening of the battery pack; 3. The top cover adopts a sloping structure to facilitate rainwater sliding off. It is welded with multiple ribs, which has the characteristics of long service life and not easily deformed; 4. The positioning and locking mechanism at the bottom of the battery box body, together with the positioning plate on the bottom plate, achieves the fastening of the battery pack in the battery box. Attached Figure Description

[0020] Figure 1 This is an overall schematic diagram of a battery box structure provided by the present invention;

[0021] Figure 2 This is an exploded view of a battery box structure provided by the present invention;

[0022] Figure 3 This is a schematic diagram of the main structure of a battery box provided by the present invention;

[0023] Figure 4 A schematic diagram of the cross-sectional shape of a tube beam in a battery box provided by the present invention;

[0024] Figure 5 Schematic diagrams of three battery support beam structures provided by the present invention;

[0025] Figure 6 This invention provides a schematic diagram of the connection between a battery support beam and the battery box body;

[0026] Figure 7 A schematic diagram of a beam support bracket provided by the present invention;

[0027] Figure 8 A frontal schematic diagram of a locking and positioning structure for a base plate provided by the present invention;

[0028] Figure 9 A reverse schematic diagram of a locking and positioning structure for a base plate provided by the present invention;

[0029] Figure 10 A schematic diagram of a battery box top cover provided by the present invention;

[0030] Figure 11 This is a schematic diagram of a battery box structure with a hoisting and positioning structure provided by the present invention. Detailed Implementation

[0031] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0032] like Figure 1 and Figure 2 As shown, the present invention provides a battery box for an electric vehicle. The battery box has a cuboid structure and includes a battery box body 1 located in the middle of the battery box, a bottom plate 2 located at the bottom of the battery box, a top cover 3 located at the top of the battery box body, a skin 4 provided on the side of the battery box, and a lifting and positioning structure 5 provided on the battery box.

[0033] Figure 3Schematic diagram of a main structure of a battery box provided by the present invention. The main body of the battery box adopts a welded structure and is formed by welding several pipe beams. The pipe beams are in the shape of a Chinese character 'Ri' or rectangle. For the cross-sectional shape of the pipe beam, refer to Figure 4 As shown. With this structure, the impact resistance of the main body of the battery box in the vertical direction can be effectively strengthened, and the structural strength is high. In this embodiment, high-strength steel material QSte700 can be selected for the pipe beam. QSte700 has a high yield strength, high structural strength, and light weight, which can improve the strength of the box body.

[0034] A plurality of layers of battery support beams 11 are provided on the main body 1 of the battery box. The battery support beams 11 are fixed to the main body 1 of the battery box through support beam brackets 12. In this embodiment, the number of layers of the battery support beams 11 is designed according to actual needs. The battery support beams 11 are made of high-strength steel material QSte700, and the preferred dimensions are 40mm*30mm*1.5mm, 60mm*40mm*3mm or 120mm*68mm*2mm. During use, the battery pack is supported by the pipe beams on the battery support beams 11. Through holes are opened on the pipe beams, and welding sleeves are embedded to realize the fastening of the battery pack. At the same time, the rectangular design of the battery support beams 11 takes into account the C pack and H pack in the battery pack. After the battery pack is installed with the battery support beams 11, it can be pushed into the battery box structure and fastened with bolts.

[0035] In an alternative embodiment, as Figure 5 shown, the present invention provides three structures of the battery support beam 11, including the battery support beam 11(a), the battery support beam 11(b) and the battery support beam 11(c). All three structures of the battery support beam 11 can realize the fastening of the battery pack. Figure 5 The battery support beam 11 in Figure 6 adopts different diagonal beam structures to assist in supporting the battery pack and realizes the fastening between the battery pack and the battery support beam.

[0036] Figure 7 Schematic diagram of the structure of the support beam bracket 12 in this embodiment. The number of the support beam brackets 12 is designed according to actual needs. In this application, it is preferred that 8 support beam brackets 12 are designed corresponding to each layer of the battery support beam 11. The support beam brackets 12 are formed by cutting and bending a plate, and are connected to the main structure by welding. The thickness of the plate of the support beam brackets 12 is preferably 6mm. Installation holes are provided on the support beam brackets 12, and these installation holes are used for the installation of the battery support beam 11. The battery support beam 11 is fixed to the main body 1 of the battery box through the support beam brackets 12.

[0037] A positioning and locking mechanism is provided at the bottom of the main body 1 of the battery box. The main body of the battery box is positioned through the positioning pin hole in the middle of the bottom, and locking fixation is achieved by using the welded bottom plate at the bottom.

[0038] A support unit 13 is also provided inside the battery box body. The support unit 13 is located above the battery carrier beam 11 and is used to place a controller, a water-cooled unit, etc.

[0039] As Figure 8 and Figure 9 shown, Figure 8 and Figure 9 are respectively the front view and the back view of the bottom plate 2. The main body of the bottom plate 2 is formed by welding pipe beams. The pipe beam is in a shape of a Chinese character 'Ri', and the cross-sectional shape of the pipe beam is shown in Figure 4 In this embodiment, the pipe beam 21 is made of high-strength steel material QSte700. QSte700 has a high yield strength, high structural strength, and light weight, which can improve the strength of the bottom plate 2. The middle part of the bottom plate 2 is a positioning plate 22. The four rectangles in the center of the positioning plate 22 are the entrances and exits of the connector, and the surrounding is a weight-reducing structure, symmetrically distributed, and is installed on the battery box body by welding. Four feet of the positioning plate 22 are installed with sleeves 23. The sleeve 23 has three circular sleeves and one flat-key-shaped sleeve, and is connected with the positioning shaft at the bottom of the battery box body 1 through the sleeve 23 to complete the positioning of the battery box. There are a total of 6 pressing plates 24, which are welded with the battery box body 1 using bent steel plates and rib plates and are used to press the whole battery box.

[0040] As Figure 10 shown, the top cover 3 is a multi-ribbed plate support structure. In this embodiment, the top cover 3 can be made of 1mm galvanized steel plate by bending and welding, and then electrophoresed to ensure anti-corrosion. During installation, it is inserted from the side into both sides for installation, which is convenient for taking and replacing, and provides convenience for the installation of the control unit. The top cover 3 adopts an inclined surface structure, which is convenient for rainwater to slide off, and is welded with multi-ribbed plates, having the characteristics of long service life and not easy to deform.

[0041] The skin 4 is arranged on the side of the battery box body. Installation holes are provided on the skin 4, which is convenient to fix the skin on the battery box body and can block dust and sundries from entering the battery box body. The skin is fixed on the battery box body by bolts, and rivet nuts are preset on the battery box body for fixation.

[0042] Figure 11 This is a schematic structural diagram of a battery box provided with a hoisting and positioning structure 5 according to the present invention. The hoisting and positioning structure 5 includes a first positioning structure 51 and a second positioning structure 52. Among them, the first positioning structure 51 is arranged on the top of the battery box body, and the second positioning structure 52 is arranged on both sides of the battery box body.

[0043] Through the first positioning structure 51 on the top of the battery box body, when replacing the battery box, the hoisting mechanism fixes the lifting arm with the first positioning structure 51, and can realize grasping and moving from the top of the battery box.

[0044] By using the second positioning structure 52 on the side of the battery box, the lifting mechanism can fix the boom to the second positioning structure 52 when changing the battery box, so that the battery box can be grabbed and moved from the side.

[0045] The present invention also provides an electric vehicle charging system, wherein the electric vehicle in the system uses the above-mentioned battery box, including a battery box storage platform and a hoisting mechanism.

[0046] The battery box storage platform includes a battery box storage area and a battery box turnover channel. The battery box turnover channel is used to transfer the battery boxes and provides transfer space. The storage area is used to store the battery boxes and charge them. A movable device is provided between the battery box storage area and the battery box turnover channel to facilitate the movement of the battery boxes between the turnover channel and the storage area.

[0047] The lifting mechanism is located above the battery box storage platform and is used to lift and transport the battery boxes between the parking area for vehicles awaiting battery replacement and the turnover channel, thus facilitating the replacement of the battery boxes in these vehicles. The lifting mechanism is compatible with the lifting and positioning structure on the battery box, allowing for gripping and moving the battery box from the top or side, simplifying battery replacement.

[0048] Based on the above description, the battery box of the present invention includes a battery box body located in the middle of the battery box, a bottom plate located at the bottom of the battery box, a top cover located at the top of the battery box, and a lifting and positioning structure. The battery box body is integrally formed by welding several pipe beams. The lifting and positioning structure includes a first positioning structure set on the top of the battery box and a second positioning structure set on the side of the battery box. The embodiments of the present invention have the following advantages: 1. The pipe beams of the present invention are all made of high-strength steel material QSte700, which can effectively enhance the vertical impact resistance of the battery box body, with high structural strength and light weight, facilitating the lifting during battery box replacement; 2. Several layers of battery support beams are provided on the battery box body. The battery support beams are fixed to the battery box body by support beam brackets. After the battery pack is installed with the battery support beams, it can be pushed into the battery box structure to achieve the fastening of the battery pack; 3. The top cover adopts a sloping structure to facilitate rainwater sliding off. It is welded with multiple ribs, which has the characteristics of long service life and not easily deformed; 4. The positioning and locking mechanism at the bottom of the battery box body, together with the positioning plate on the bottom plate, achieves the fastening of the battery pack in the battery box.

[0049] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0050] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0051] The present invention has provided a detailed description of an electric vehicle battery box and an electric vehicle charging system. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A battery box for an electric vehicle, characterized in that, include: The battery box body is located in the middle of the battery box. The battery box body is integrally formed by welding several tubular beams. The cross-section of the tubular beams is H-shaped. The tubular beams are made of high-strength steel QSte700. The dimensions of the tubular beams are 40mm*30mm*1.5mm, 60mm*40mm*3mm, or 120mm*68mm*2mm. Several layers of battery support beams are provided in the middle of the battery box body. The battery support beams are fixed to the side wall of the battery box by support beam brackets. The support beam brackets are provided with mounting holes for installing the battery support beams. The base plate is located at the bottom of the battery box. The center of the base plate is a positioning plate. The four rectangular sections in the center of the positioning plate are the inlet and outlet of the connector. The positioning plate is surrounded by a weight-reducing structure, which is symmetrically distributed. The positioning plate is welded to the battery box body. The positioning plate has four sleeves, including three circular sleeves and one flat key-shaped sleeve. The positioning plate is connected to the positioning shaft at the bottom of the battery box body through the sleeves to complete the positioning of the battery box. The top cover is located on the top of the battery box. The top cover has a sloping structure and is integrally formed by bending and welding steel plate. The top cover has a multi-rib support structure and is installed by extending into both sides from the side. A hoisting and positioning structure, comprising a first positioning structure and a second positioning structure, wherein the first positioning structure is disposed on the top of the battery box and the second positioning structure is disposed on both sides of the battery box; The bottom of the battery box body is provided with a positioning and locking mechanism, and a positioning plate is provided on the bottom plate. The positioning and locking mechanism is connected to the positioning plate.

2. The electric vehicle battery box according to claim 1, characterized in that, The battery box is rectangular.

3. The electric vehicle battery box according to claim 1, characterized in that, The battery box has a skin on its side, and the skin has mounting holes. The skin is fixed to the main body of the battery box.

4. An electric vehicle charging system, wherein the electric vehicle in the system is equipped with a battery box as described in claim 1, and the system includes a battery box storage platform and a hoisting mechanism.

5. The electric vehicle charging system according to claim 4, characterized in that, The battery box storage platform includes a battery box storage area and a battery box turnover channel. The battery box turnover channel is used to transfer the battery boxes, and the battery box storage area is used to store the battery boxes.

6. The electric vehicle charging system according to claim 5, characterized in that, The hoisting mechanism is located above the battery box storage platform and is used to hoist the battery box between the parking area of ​​the vehicle waiting to replace the battery and the turnover channel. The hoisting mechanism is adapted to the hoisting and positioning structure on the battery box.

Images