An electric vehicle and a battery case system thereof

Abstract

The embodiment of the present application provides an electric vehicle and a battery box system thereof, and the system specifically comprises a battery rack, a battery box and a locking mechanism. The battery rack is arranged on a frame of the electric vehicle, and a first electric plug is arranged on an inner side of the battery rack and connected with a power supply system of the electric vehicle; the battery box is used for carrying a battery, and a second electric plug matched with the first electric plug is arranged on one side of the battery box; and the locking mechanism is arranged on the battery box and has a telescopic part used for locking the battery box on the battery rack by the telescopic part. Obviously, the battery box system of the present application realizes power supply of the electric vehicle and locking of the battery box by only a few components, and the structure is relatively simple, so that the reliability is improved, and the manufacturing cost is reduced due to the simple structure.

Description

Technical Field

[0001] This application relates to the field of electric vehicle technology, and in particular to an electric vehicle and its battery pack system. Background Technology

[0002] Given that current battery and charging technologies cannot meet the demands of fast vehicle charging, the common solution is to quickly replace the battery. The inventors of this application, through research, discovered several methods for locking removable batteries, such as:

[0003] 1. A quick-change electric vehicle battery box with application number 200810006771.6. The invention design includes: a battery pack, an inner box, an outer box, and a release slide. The slide is located between the inner box and the outer box and includes an upper slide and a lower slide. The upper slide is welded to the inner box frame, and the lower slide is welded to the outer box frame. The upper slide is inserted into the lower slide to form a drawer-type loading and unloading of the battery pack. The upper slide includes multiple rollers that can move within the lower slide.

[0004] 2. A battery box locking device with application number 201310714851.8, which has a locked state and an unlocked state, the locking mechanism includes a first link; a chain mechanism including a chain body connected to the locking mechanism, the chain mechanism controls the locking mechanism to switch between the locked state and the unlocked state; and a damping mechanism that restricts the axial movement of the first link when the first link is subjected to an axial force less than a predetermined axial force.

[0005] 3. A battery box unlocking device, a battery box, and a battery box fast swapping system are disclosed in application number 201711482887.2. The battery box unlocking device includes a mounting base, a telescopic mechanism, a transmission mechanism, and a locking mechanism. The locking mechanism is used to lock and fix the battery box body to the battery mounting bracket of an electric vehicle. The telescopic mechanism passes through the mounting base and, under the action of an unlocking force, performs telescopic movement relative to the transmission mechanism within the mounting base. One end of the transmission mechanism is connected to the telescopic mechanism, and the other end is connected to the locking mechanism. The telescopic movement of the telescopic mechanism drives the transmission mechanism to move between the telescopic mechanism and the locking mechanism, controlling the locking or unlocking of the locking mechanism. The battery box includes a box body and a battery box unlocking device. The battery box fast swapping system includes a battery mounting bracket, swapping equipment, and a battery box.

[0006] In implementing the above-mentioned solutions, the applicant found that these solutions are quite complex and have complicated structures, which not only leads to poor reliability but also results in high manufacturing costs due to the complex structure, making them unsuitable for widespread promotion. Summary of the Invention

[0007] In view of this, this application provides a method for an electric vehicle and its battery box system to solve the problems of complex structure and high manufacturing cost of existing solutions.

[0008] To address the aforementioned problems, this application discloses a battery box system for use in electric vehicles. The battery box system includes a battery rack, a battery box, and a locking mechanism, wherein:

[0009] The battery rack is mounted on the frame of the electric vehicle, and a first electrical plug-in connected to the power supply system of the electric vehicle is provided on the inside of the battery rack.

[0010] The battery box is used to carry the battery box, and a second electrical plug-in that matches the first electrical plug-in is provided on one side of the battery box;

[0011] The locking mechanism is provided on the battery box and has a retractable component for locking the battery box onto the battery rack using the retractable component.

[0012] Optionally, rollers are provided on the bottom and sidewalls of the inner side of the battery rack;

[0013] The bottom and outer wall of the battery box are provided with tracks that match the rollers, and the tracks include a bottom track and a side track, respectively.

[0014] Optionally, the bottom track has a slope.

[0015] Optionally, the edges of the side rails have a flared shape.

[0016] The side wall is also provided with a locking hole that matches the push rod end of the telescopic component.

[0017] Optionally, the locking mechanism includes a latch and two retractable components. The latch is located between the two retractable components. The push rod end of one retractable component faces the locking hole on one side wall, and the push rod end of the other retractable component faces the locking hole on the other side wall.

[0018] Optionally, the retractable component includes a guide sleeve fixed to the battery box, and a push rod, a rotating shaft, a locking rod, a spring, and a push rod end are sequentially arranged inside the guide sleeve, wherein:

[0019] The push rod includes a push rod slider and a push rod locking surface;

[0020] The rotating shaft includes a rotating shaft slider;

[0021] The guide sleeve is provided with a first slide end face, a slide, a second slide end face and a third slide end face.

[0022] An electric vehicle is also provided, which is equipped with the battery box system described above.

[0023] As can be seen from the above technical solution, this application provides an electric vehicle and its battery box system, which specifically includes a battery rack, a battery box, and a locking mechanism. The battery rack is mounted on the frame of the electric vehicle, and a first electrical connector connected to the power supply system of the electric vehicle is located on the inner side of the battery rack. The battery box carries the battery box, and a second electrical connector matching the first electrical connector is located on one side of the battery box. The locking mechanism is mounted on the battery box and has a retractable component for locking the battery box onto the battery rack using the retractable component. Clearly, the battery box system of this application achieves power supply to the electric vehicle and locking of the battery box with only a few components, resulting in a simpler structure, improved reliability, and reduced manufacturing costs due to the simple structure. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of a battery box system according to an embodiment of this application;

[0026] Figure 2 This is a schematic diagram of a battery holder according to an embodiment of this application;

[0027] Figure 3 This is a schematic diagram of the battery box according to an embodiment of this application;

[0028] Figure 4 This is a schematic diagram of the structure of the retractable component according to an embodiment of this application;

[0029] Figure 5 This is a partial enlarged view of the retractable component according to an embodiment of this application;

[0030] Figure 6 This is a schematic diagram of the retractable component in the unlocked state according to an embodiment of this application;

[0031] Figure 7 This is a schematic diagram of the retractable component in the locked state according to an embodiment of this application;

[0032] Figure 8 This is a schematic diagram illustrating the unlocking and disassembly process of the battery box according to an embodiment of this application;

[0033] Figure 9This is a schematic diagram illustrating the installation and locking process of the battery box according to an embodiment of this application. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] Example 1

[0036] Figure 1 This is a schematic diagram of the structure of a battery box system according to an embodiment of this application.

[0037] Reference Figure 1 As shown, the battery box system provided in this embodiment is applied to an electric vehicle, specifically installed on the frame of the electric vehicle, and includes a battery rack 10, a battery box 20, and a locking mechanism 30.

[0038] The battery rack is mounted on the frame of the electric vehicle, and its inner side has a first electrical connector 11 that is electrically connected to the power supply system of the electric vehicle, such as... Figure 2 As shown. The battery rack serves as a carrier for the battery box. The battery box can be pushed into and fixed to the battery rack. A second electrical plug-in that matches the first electrical plug-in is provided on the bottom surface of the battery box. When the battery box is fixed to the battery rack, the first electrical plug-in and the second electrical plug-in are perfectly connected, and the battery and power supply circuit inside the battery box can be powered by the electric vehicle's power supply system through the first electrical plug-in and the second battery box.

[0039] To prevent the battery box from easily detaching from the battery rack, a locking mechanism is provided to secure the battery box to the battery rack. This locking mechanism includes at least one retractable component, which secures the battery box to the battery rack through its extension and retraction.

[0040] As can be seen from the above technical solution, this embodiment provides a battery box system applied to electric vehicles, specifically including a battery rack, a battery box, and a locking mechanism. The battery rack is mounted on the frame of the electric vehicle, and a first electrical connector connected to the power supply system of the electric vehicle is located on the inner side of the battery rack. The battery box carries the battery box, and a second electrical connector matching the first electrical connector is located on one side of the battery box. The locking mechanism is mounted on the battery box and has a retractable component for locking the battery box onto the battery rack using the retractable component. Clearly, the battery box system of this application achieves power supply to the electric vehicle and locking of the battery box with only a few components, resulting in a simpler structure, improved reliability, and reduced manufacturing costs due to the simple structure.

[0041] To facilitate easy access for the battery box to and from the battery rack, casters 12 are provided on the bottom and side walls of the inner side of the battery rack. Figure 2 As shown. Furthermore, a locking hole 13 matching the push rod end of the retractable component is provided at the outer end of the side wall, one on each side. And as... Figure 3 As shown, a bottom track 22 and a side track 25 that match the bottom rollers on the battery rack are provided at the bottom of the battery box.

[0042] The bottom track has a slope to provide an inward thrust once the battery box is installed, helping to maintain its stability. The side tracks have a flared edge shape, meaning the opening is larger at the edge and narrows when facing inward, which helps with positioning.

[0043] In one specific embodiment of this application, a locking mechanism is provided, which includes a latch 23 and two retractable components. The retractable component includes a guide sleeve 32 fixed to the battery box, within which are sequentially arranged a push rod 31, a rotating shaft 33, a locking rod 34, a spring 35, and a push rod end 36. Figure 4 As shown. Figure 5 As shown, the push rod includes a push rod slider 311 and a push rod blocking surface 312, the rotating shaft includes a rotating shaft slider 331, and the guide sleeve is provided with a first slide end face 321, a slide 322, a second slide end face 323 and a third slide end face 324.

[0044] When the retractable component is pressed for the first time, the push rod moves to the right, causing the rotating shaft to rotate a certain angle. The rotating shaft locking block then contacts the guide sleeve's locking surface. Under the action of the thrust, the locking rod overcomes the spring force and extends out of the guide sleeve, putting the retractable mechanism in a locked state. Figure 6As shown; the retractable component presses the push rod a second time, causing the push rod to move to the right. This causes the rotating shaft to rotate a certain angle and then, under the action of the spring force, move to the right along the guide sleeve track, stopping when it contacts the push rod's locking surface. At this point, the locking rod moves to the left under the action of the spring force, and the mechanism is in the unlocked state. Figure 7 As shown.

[0045] The right end of the spring is in contact with the end of the push rod. Without external force, the spring extends freely, and its left end is in contact with the shoulder of the locking rod. The left end face of the locking rod contacts the right end face of the rotating shaft. The rotating shaft slider contacts the push rod's locking surface. The push rod slider is restricted by the end face of the first slide of the guide sleeve. At this time, the spring extends freely, the locking rod is in the retracted state, and the telescopic mechanism is unlocked.

[0046] Pressing the push rod with the unlocking force causes the push rod to push the rotating shaft to move to the right. When it reaches the designated displacement, the rotating shaft slider contacts the end face of the third slide, disengaging from the push rod's blocking surface. Under the guidance of the slope of the third slide end face, the rotating shaft rotates at a certain angle. When the unlocking force is removed, the rotating shaft slider moves to the left under the action of the spring force and stops when it is restricted by the end face of the third track of the guide sleeve. At this time, the push rod is in the locked state.

[0047] When the unlocking mechanism presses the push rod, the push rod pushes the rotating shaft to move to the right. When it reaches the maximum displacement, the rotating shaft slider disengages from the third track end face and continues to rotate at a certain angle under the guidance of the second slide end face. When it rotates to the slide, it moves to the left under the action of the spring force and contacts the push rod blocking surface. The push rod slider continues to move to the left along the slide under the action of the spring force until it stops when the push rod slider is restricted by the first slide end face. At this time, the push rod is reset and the telescopic mechanism is in the unlocked state.

[0048] like Figure 8 As shown, the unlocking and disassembly process of the battery box is as follows:

[0049] 1) Unlocking: The unlocking mechanism moves closer to the front panel of the depleted battery box, and the push rod moves to both sides under the pushing force of the unlocking mechanism;

[0050] 2) When both ends of the unlocking mechanism are pushed, the push rod reaches its maximum displacement;

[0051] 3) The unlocking mechanism continues to advance, passing the push rod and entering the latch. At this point, the push rod springs back to its reset position.

[0052] 4) Rotate the unlocking mechanism 90° clockwise to pull out the depleted battery compartment;

[0053] 5) Rotate the unlocking mechanism 45° clockwise to disengage the latch;

[0054] 6) The unlocking action and battery removal process are complete.

[0055] like Figure 9As shown, the installation and locking process of the battery box is as follows:

[0056] 1) The unlocking mechanism moves closer to the front panel of the fully charged battery box, and the push rod moves to both sides under the pushing force of the unlocking mechanism;

[0057] 2) When both ends of the unlocking mechanism are pushed, the push rod reaches its maximum displacement;

[0058] 3) The unlocking mechanism continues to advance, passing the push rod and entering the latch. The push rod springs back to displacement S2, and the locking structure is in the locked state.

[0059] 4) Rotate the unlocking mechanism 45° clockwise to disengage the latch;

[0060] 5) Battery box installation and processing completed.

[0061] Example 2

[0062] This embodiment provides an electric vehicle equipped with the battery pack system provided in the previous embodiment. The battery pack system includes a battery rack, a battery box, and a locking mechanism. The battery rack is mounted on the vehicle frame, and a first electrical connector connected to the vehicle's power supply system is located on the inner side of the battery rack. The battery box carries the battery box, and a second electrical connector matching the first electrical connector is located on one side of the battery box. The locking mechanism is mounted on the battery box and has a retractable component for locking the battery box onto the battery rack. Clearly, the battery pack system of this application achieves power supply to the electric vehicle and locking of the battery box with only a few components, resulting in a simpler structure, improved reliability, and reduced manufacturing costs due to the simple structure.

[0063] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0064] Although preferred embodiments of the present application 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 the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.

[0065] 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.

[0066] The technical solutions provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. 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 this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A battery box system for use in electric vehicles, characterized in that, The battery box system includes a battery rack, a battery box, and a locking mechanism, wherein: The battery rack is mounted on the frame of the electric vehicle, and a first electrical connector connected to the power supply system of the electric vehicle is provided on the inner side of the battery rack; the battery rack is the carrier of the battery box. The battery box is used to carry the battery box, and a second electrical plug-in that matches the first electrical plug-in is provided on one side of the battery box; The locking mechanism is provided on the battery box and has a retractable component for locking the battery box onto the battery rack using the retractable component; The battery rack has rollers on its inner bottom and side walls; the battery box has tracks on its outer bottom and outer walls that match the rollers, the tracks including a bottom track and a side track; the side walls also have locking holes that match the push rod end of the retractable component; the bottom track has a slope; the edge of the side track has a flared shape. The locking mechanism includes a latch and two retractable components. The latch is located between the two retractable components. The push rod end of one retractable component faces the locking hole on one side wall, and the push rod end of the other retractable component faces the locking hole on the other side wall. The retractable component includes a guide sleeve fixed to the battery box, and a push rod, a rotating shaft, a locking rod, a spring, and a push rod end are sequentially arranged inside the guide sleeve, wherein: The push rod includes a push rod slider and a push rod locking surface; The rotating shaft includes a rotating shaft slider; The guide sleeve is provided with a first slide end face, a slide, a second slide end face and a third slide end face.

2. An electric vehicle, characterized in that, The battery box system as described in claim 1 is provided.

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