Vehicle and battery pack box thereof

Abstract

The utility model relates to a vehicle and a battery pack box body thereof. The battery pack box body comprises a first shell, a second shell, a first supporting assembly and a second supporting assembly, in the process of actually installing the battery pack box body on the vehicle body, firstly, the battery pack is placed in the containing cavity, then the first supporting assembly and the second supporting assembly are connected with the second shell correspondingly, and then the battery pack box body is fixedly connected to the to-be-installed position of the vehicle body; meanwhile, the first supporting assembly and the second supporting assembly are connected with the two outer side walls, arranged in the second direction, of the second shell correspondingly, and therefore the supporting force of the second shell in the second direction is increased; the first supporting assembly and the second supporting assembly on the side face can provide certain supporting force for the first shell and the second shell, the battery in the containing cavity is prevented from being extruded, and the safety of the battery pack box body is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a vehicle and a battery pack case thereof. Background Art

[0002] With the continuous development of the domestic automobile industry, users' requirements for automobile safety are constantly increasing, especially the emergence of electric vehicles has put forward higher requirements for battery safety. According to accident research, side collisions account for a large proportion of various accidents. Among them, column collisions have a small collision area and a greater unit collision force, which will have a strong cutting effect on the vehicle and pose a greater threat to the vehicle battery pack.

[0003] In the prior art, the entire body is stamped with steel, and there are staggered reinforcement plates on the ground outside the box, which takes into account cost, lightness and safety performance compared to the traditional aluminum battery pack box. However, the reinforcement beam structure of this battery pack box is complex and connected by welding points, which may fail. In addition, the side strength of the battery pack box is weak, and there is a risk of squeezing the battery when the side is hit. Utility Model Content

[0004] Based on this, it is necessary to provide a vehicle and its battery pack case to address the problem that the side strength of the case is weak and there is a risk of squeezing the battery when the side is hit.

[0005] A battery pack case, the battery pack case comprising:

[0006] a first shell;

[0007] A second shell is arranged and buckled with the first shell along a first direction, and the first shell and the second shell are connected to form a receiving cavity for receiving a battery pack;

[0008] a first support assembly;

[0009] A second support assembly, wherein two outer side walls of the second shell arranged along the second direction are respectively connected to the first support assembly and the second support assembly, an end of the first support assembly facing away from the second shell is connected to the vehicle body, and an end of the second support assembly facing away from the second shell is connected to the vehicle body;

[0010] The first direction is perpendicular to the second direction.

[0011] In one embodiment, the first support assembly includes a first bracket plate and a first bracket reinforcement plate;

[0012] The first bracket plate is connected to the second shell, the first bracket reinforcement plate is stacked and connected to the first bracket plate, and one end of the first bracket reinforcement plate away from the second shell and one end of the first bracket plate away from the second shell are both connected to the vehicle body.

[0013] In one embodiment, the first support plate includes a first fixing portion, a first connecting portion, and a second fixing portion that are sequentially connected, and the first fixing portion and the second fixing portion extend in opposite directions with respect to the extending direction of the first connecting portion. The first support reinforcing plate includes a third fixing portion, a second connecting portion, and a fourth fixing portion that are sequentially connected, and the third fixing portion and the fourth fixing portion extend in opposite directions with respect to the extending direction of the second connecting portion;

[0014] The first fixing portion is attached to and connected to the third fixing portion, the first connecting portion is attached to and connected to the second connecting portion, and the second fixing portion is attached to and connected to the fourth fixing portion; the first fixing portion and the third fixing portion are connected to the vehicle body;

[0015] The first connecting portion is connected to the outer side wall of the second housing, and the second fixing portion is connected to the side of the bottom surface of the second housing facing away from the first housing.

[0016] In one embodiment, the first support assembly further includes a first positioning pin. The first fixing portion is provided with a first positioning hole, and the third fixing portion is provided with a second positioning hole. The first positioning pin is inserted through the first positioning hole and the second positioning hole.

[0017] In one embodiment, a first groove is formed at the edge of the side surface of the second housing facing away from the first housing, and the second fixing portion is located in the first groove and connected to the second housing.

[0018] In one embodiment, the battery pack housing includes a plurality of the first support assemblies, and the second housing is provided with a plurality of the first grooves;

[0019] The plurality of first grooves are arranged in a third direction, and the plurality of first grooves correspond to the plurality of first support assemblies one by one;

[0020] The first direction, the second direction, and the third direction are perpendicular to each other in pairs.

[0021] In one embodiment, the second support assembly includes a plurality of second support plates and a second support reinforcing plate;

[0022] The second support plate includes a fifth fixing portion, a third connecting portion, and a sixth fixing portion that are sequentially connected, and the fifth fixing portion and the sixth fixing portion extend in opposite directions with respect to the extending direction of the third connecting portion. The second support reinforcing plate includes a seventh fixing portion, a fourth connecting portion, and an eighth fixing portion that are sequentially connected, and the seventh fixing portion and the eighth fixing portion extend in opposite directions with respect to the extending direction of the fourth connecting portion;

[0023] The third connecting portion is connected to the outer sidewall of the second housing, the sixth fixing portion is connected to the side of the bottom surface of the second housing facing away from the first housing, a plurality of the fifth fixing portions are connected to the eighth fixing portion, and a plurality of the fifth fixing portions and the eighth fixing portion are connected to the vehicle body;

[0024] In the direction away from the second housing along the second direction, the distance between the third connecting portion and the fourth connecting portion in the first direction gradually decreases, and one end of the seventh fixing portion facing away from the fourth connecting portion is connected to the outer sidewall of the second housing.

[0025] In one embodiment, a first flanging is provided at the opening edge of the second housing close to the first housing, and one end of the seventh fixing portion facing away from the fourth connecting portion is connected to the first flanging.

[0026] In one embodiment, a plurality of second grooves are formed at the edge of the side surface of the second housing facing away from the first housing, and the plurality of second grooves correspond to the plurality of second support plates one by one. The sixth fixing portion is located in the second groove and is connected to the second housing.

[0027] In one embodiment, a plurality of first reinforcing ribs are provided on the sidewall of the second housing connected to the second support assembly, and the thickness of the first reinforcing ribs gradually expands in the first direction away from the first housing.

[0028] In one embodiment, the battery pack box body further includes a reinforcing plate. The edge of the reinforcing plate has a second flanging to form a groove, and the outer sidewall of the second flanging is connected to the inner sidewall of the second housing.

[0029] In one embodiment, a plurality of second reinforcing ribs are provided on the bottom wall of the second housing. A plurality of first hanging holes are formed in the bottom wall of the second housing. The first hanging holes are formed in the second reinforcing ribs. Second hanging holes are formed in the bottom wall of the first housing. The battery is connected to the battery pack box body through the first hanging holes and the second hanging holes.

[0030] One embodiment of the present application further provides a vehicle, which includes a vehicle body and the battery pack box body described above.

[0031] During the actual installation of the above battery pack housing on the vehicle body, first place the battery pack into the second housing, and then snap the first housing onto the second housing in the first direction so that the battery pack is located within the accommodation cavity. Subsequently, connect the first support assembly and the second support assembly to the second housing respectively. Then, connect one end of the first support assembly facing away from the second housing to the vehicle body, and connect one end of the second support assembly facing away from the second housing to the vehicle body, thereby limiting both ends of the battery pack housing in the second direction, and further fixedly connecting the battery pack housing to the installation position on the vehicle body. At the same time, the first support assembly and the second support assembly are respectively connected to the two outer side walls of the second housing arranged in the second direction, thereby increasing the supporting force of the second housing in the second direction. When the battery pack housing is subjected to a side collision, the first support assembly and the second support assembly on the side will provide a certain supporting force to the first housing and the second housing, preventing the battery in the accommodation cavity from being squeezed and improving the safety of the battery pack housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 FIG. is a schematic structural diagram of a battery pack housing according to an embodiment.

[0033] Figure 2 is Figure 1 an exploded view of.

[0034] Figure 3 FIG. is a schematic structural diagram of a reinforcing plate according to an embodiment.

[0035] Figure 4 is Figure 1 a schematic diagram of another perspective.

[0036] Figure 5 is Figure 1 an enlarged view of the first support assembly in.

[0037] Figure 6 is Figure 5 a schematic structural diagram of another perspective.

[0038] Figure 7 is Figure 5 an exploded view of the first support assembly in.

[0039] Figure 8 is Figure 7 a schematic diagram of another perspective.

[0040] Figure 9 is Figure 1 an enlarged view of the second support assembly in.

[0041] Figure 10 is Figure 9 a schematic structural diagram of another perspective.

[0042] Figure 11 is Figure 9Exploded view of the second support component.

[0043] Figure 12 For Figure 11 Enlarged view of the second reinforcing plate in

[0044] Figure 13 For Figure 11 Schematic diagram from another perspective.

[0045] Explanation of the reference numerals in the attached drawings:

[0046] 100 - Battery pack housing;

[0047] 110 - First housing; 111 - Accommodation cavity; 112 - Third flanging; 113 - Second hanging hole; 114 - Fifth reinforcing rib;

[0048] 120 - Second housing; 121 - First groove; 122 - Second groove; 123 - Second reinforcing rib; 124 - First hanging hole; 125 - First connection hole; 126 - Third connection hole; 127 - First flanging;

[0049] 130 - First support component; 131 - First support plate; 1311 - First fixing part; 1312 - First connection part; 1313 - Second fixing part; 132 - First support reinforcing plate; 1321 - Third fixing part; 1322 - Second connection part; 1323 - Fourth fixing part; 133 - First positioning hole; 134 - Second positioning hole; 135 - Strip-shaped groove; 136 - Second connection hole;

[0050] 140 - Second support component; 141 - Second support plate; 1411 - Fifth fixing part; 1412 - Third connection part; 1413 - Sixth fixing part; 142 - Second support reinforcing plate; 1421 - Seventh fixing part; 1422 - Fourth connection part; 1423 - Eighth fixing part; 143 - First reinforcing rib; 144 - Third positioning hole; 145 - Fourth positioning hole; 146 - Fourth connection hole; 147 - Third reinforcing rib;

[0051] 150 - Reinforcing plate; 151 - Fourth reinforcing rib; 152 - Second flanging;

[0052] 160 - First positioning pin; 161 - Second positioning pin;

[0053] OX - First direction; OY - Second direction; OZ - Third direction. Detailed implementation manner

[0054] To make the above objects, features, and advantages of the present application more apparent and understandable, the following provides a detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0055] In the description of the present application, it should be understood that if terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application.

[0056] In addition, if terms such as "first" and "second" appear, these terms are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0057] In the present application, unless otherwise clearly specified and limited, if terms such as "install", "connect", "join", "fix", etc. appear, these terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0058] In this application, unless otherwise clearly defined and limited, when a first feature is described as being "on" or "under" a second feature or the like, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is less than that of the second feature.

[0059] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. If an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0060] Referring to Figure 1 , Figure 1 , which shows a schematic structural diagram of a battery pack housing 100 in an embodiment of the present application. The battery pack housing 100 provided in an embodiment of the present application includes: a first housing 110, a second housing 120, a first support assembly 130, and a second support assembly 140.

[0061] In the above-mentioned battery pack housing 100, the second housing 120 and the first housing 110 are arranged and fastened along the first direction OX. The first housing 110 and the second housing 120 are connected to form a receiving cavity 111 for receiving the battery pack. Two outer side walls of the second housing 120 arranged along the second direction OY are respectively connected to the first support assembly 130 and the second support assembly 140. One end of the first support assembly 130 facing away from the second housing 120 is connected to the vehicle body (not shown in the figure), and one end of the second support assembly 140 facing away from the second housing 120 is connected to the vehicle body. Among them, the first direction OX is perpendicular to the second direction OY.

[0062] During the actual installation and use of the above-mentioned battery pack housing 100, first, a battery pack (not shown in the figure) is placed in the second housing 120, and the first housing 110 is fastened to the second housing 120 along the first direction OX so that the battery pack is located in the receiving cavity 111, as Figure 2, Subsequently, the first support component 130 and the second support component 140 are respectively connected to the second housing 120. Then, one end of the first support component 130 facing away from the second housing 120 is connected to the vehicle body, and one end of the second support component 140 facing away from the second housing 120 is connected to the vehicle body. Thus, both ends of the battery pack box 100 in the second direction OY are limited by the vehicle body, and further, the battery pack box 100 is fixedly connected to the installation position on the vehicle body. At the same time, the first support component 130 and the second support component 140 are respectively connected to the two outer side walls of the second housing 120 arranged along the second direction OY, thereby increasing the supporting force of the second housing 120 in the second direction OY. When the battery pack box 100 is subjected to a side collision, the first support component 130 and the second support component 140 on the side will provide a certain supporting force to the first housing 110 and the second housing 120, preventing the battery in the accommodation cavity 111 from being squeezed and improving the safety of the battery pack box 100.

[0063] Refer to Figure 5 and Figure 6 , In an embodiment, the first support component 130 includes a first support plate 131 and a first support reinforcement plate 132. The first support plate 131 is connected to the second housing 120. The first support reinforcement plate 132 is stacked and connected with the first support plate 131. One end of the first support reinforcement plate 132 away from the second housing 120 and one end of the first support plate 131 away from the second housing 120 are both connected to the vehicle body. Thus, the two ends of the first support plate 131 can be respectively connected to the second housing 120 and the vehicle body, thereby fixing one side of the battery pack box 100 to the vehicle body. At the same time, the first support plate 131 can provide a certain supporting force for this side of the battery pack box 100, and the first support reinforcement plate 132 enhances the supporting force of the first support plate 131 on the side of the battery pack box 100, improving the side strength.

[0064] Refer to Figure 7 and Figure 8, in one embodiment, the first support plate 131 includes a first fixing portion 1311, a first connecting portion 1312, and a second fixing portion 1313 that are sequentially connected, and the first fixing portion 1311 and the second fixing portion 1313 extend in directions opposite to each other with respect to the extending direction of the first connecting portion 1312. The first support reinforcing plate 132 includes a third fixing portion 1321, a second connecting portion 1322, and a fourth fixing portion 1323 that are sequentially connected, and the third fixing portion 1321 and the fourth fixing portion 1323 extend in directions opposite to each other with respect to the extending direction of the second connecting portion 1322. The first fixing portion 1311 is attached to and connected to the third fixing portion 1321, the first connecting portion 1312 is attached to and connected to the second connecting portion 1322, and the second fixing portion 1313 is attached to and connected to the fourth fixing portion 1323. The first fixing portion 1311 and the third fixing portion 1321 are connected to the vehicle body. The first connecting portion 1312 is connected to the outer side wall of the second housing 120, and the second fixing portion 1313 is connected to the side of the bottom surface of the second housing 120 that faces away from the first housing 110.

[0065] Specifically, the first fixing portion 1311 forms an angle with the first connecting portion 1312, preferably a right angle; the second fixing portion 1313 forms an angle with the first connecting portion 1312, preferably a right angle; the third fixing portion 1321 forms an angle with the second connecting portion 1322, preferably a right angle; the fourth fixing portion 1323 forms an angle with the second connecting portion 1322, preferably a right angle.

[0066] In this embodiment, by sequentially connecting the first fixing portion 1311, the first connecting portion 1312, and the second fixing portion 1313, and the first fixing portion 1311 and the second fixing portion 1313 extending in opposite directions with respect to the extending direction of the first connecting portion 1312, a folding structure similar to a Z shape is formed to constitute the first support plate 131. The third fixing portion 1321, the second connecting portion 1322, and the fourth fixing portion 1323 are sequentially connected, and the third fixing portion 1321 and the fourth fixing portion 1323 extend in opposite directions with respect to the extending direction of the second connecting portion 1322, so as to form a folding structure similar to a Z shape to constitute the first support reinforcement plate 132. Thus, on the premise of ensuring the support strength, the first support plate 131 and the first support reinforcement plate 132 are extended in a direction away from the second housing 120, which not only improves the energy absorption and buffering distance of the first support assembly 130 for the side collision of the battery pack box body 100, but also enables the extension of the first support assembly 130 so as to connect the first fixing portion 1311 and the third fixing portion 1321 to the vehicle body. The first fixing portion 1311 and the third fixing portion 1321 are attached and connected, the first connecting portion 1312 and the second connecting portion 1322 are attached and connected, and the second fixing portion 1313 and the fourth fixing portion 1323 are attached and connected. Thus, the supportability of the first support plate 131 is strengthened by attaching the first support reinforcement plate 132 to the first support plate 131. At the same time, the first connecting portion 1312 is connected to the outer side wall of the second housing 120, and the second fixing portion 1313 is connected to the side of the bottom surface of the second housing 120 away from the first housing 110. In this embodiment, the first connecting portion 1312 and the side surface of the second housing 120 are welded by solder joints, and the second fixing portion 1313 and the side of the bottom surface of the second housing 120 away from the first housing 110 are welded by solder joints, so that the first support plate 131 is connected to the adjacent surfaces on both sides of the second housing 120 from two directions, improving the connection strength between the first support plate 131 and the second housing 120.

[0067] Specifically, the first support plate 131 and the first support reinforcement plate 132 are welded by solder joints.

[0068] Refer to Figure 7 and Figure 8Preferably, two strip grooves 135 are formed on the first bracket plate 131 and the first bracket reinforcement plate 132 on the side close to the first shell 110 along the first direction OX, and protrusions are formed on the side away from the first shell 110 along the first direction OX, which can not only increase the support strength of the first bracket plate 131 and the first bracket reinforcement plate 132, but also can be placed in the strip groove 135 of the first bracket reinforcement plate 132 by the protrusion of the first bracket plate 131, so as to preliminarily position the first bracket plate 131 and the first bracket reinforcement plate 132, thereby improving the convenience of installation and welding. The extending direction of the groove is consistent with the direction in which the first fixing portion 1311, the first connecting portion 1312 and the second fixing portion 1313 are connected and arranged in sequence.

[0069] See also Figure 7 and Figure 8 Preferably, the bottom wall of the second shell 120 is provided with a first connecting hole 125, and the second fixing portion 1313 and the fourth fixing portion 1323 are both provided with a second connecting hole 136, and the first support assembly 130 and the second shell 120 are further fixed by connecting members such as bolts or screws passing through the first connecting hole 125 and the second connecting hole 136.

[0070] See also Figure 5 and Figure 7 In one embodiment, the first supporting assembly 130 further includes a first positioning pin 160, the first fixing portion 1311 is provided with a first positioning hole 133, the third fixing portion 1321 is provided with a second positioning hole 134, and the first positioning pin 160 is passed through the first positioning hole 133 and the second positioning hole 134. By passing the first positioning pin 160 through the first positioning hole 133 and the second positioning hole 134, the first fixing portion 1311 and the third fixing portion 1321 can be preliminarily positioned and connected, which facilitates subsequent welding and connection and fixing operations.

[0071] See also Figure 4 , Figure 6 as well as Figure 8 In one embodiment, a first groove 121 is formed at an edge of a side of the second shell 120 away from the first shell 110, and the second fixing portion 1313 is located in the first groove 121 and connected to the second shell 120, so that the second fixing portion 1313 and the fourth fixing portion 1323 will not protrude from the bottom surface of the second shell 120, so that the position of the battery pack case 100 relative to the vehicle body is more stable and fits well. At the same time, when the battery pack case 100 is subjected to a side collision from the direction of the first supporting assembly 130, the ends of the second fixing portion 1313 and the fourth fixing portion 1323 will abut against the side wall of the first groove 121, further offsetting the collision, thereby improving the side collision resistance of the battery pack case 100 and improving the protection of the internal battery pack.

[0072] See alsoFigure 1 and Figure 4 In one embodiment, the battery pack case 100 includes a plurality of first support components 130, and the second shell 120 is provided with a plurality of first grooves 121. The plurality of first grooves 121 are arranged along the third direction OZ, and the plurality of first grooves 121 correspond to the plurality of first support components 130 one by one. Thus, the plurality of first support components 130 are used to resist the side collision from the side, further improving the side collision resistance of the battery pack case 100 and improving the protection capability of the internal battery pack, wherein the first direction OX, the second direction OY and the third direction OZ are perpendicular to each other.

[0073] See also Figure 9 In one embodiment, the second support assembly 140 includes a plurality of second support plates 141 and a second support reinforcement plate 142. The second support plate 141 includes a fifth fixing portion 1411, a third connecting portion 1412, and a sixth fixing portion 1413 connected in sequence, and the fifth fixing portion 1411 and the sixth fixing portion 1413 extend in opposite directions relative to the third connecting portion 1412. The second support reinforcement plate 142 includes a seventh fixing portion 1421, a fourth connecting portion 1422, and an eighth fixing portion 1423 connected in sequence, and the seventh fixing portion 1421 and the eighth fixing portion 1423 extend in opposite directions relative to the fourth connecting portion 1422. Figure 11 and Figure 13 The third connection portion 1412 is connected to the side of the second shell 120, the sixth fixing portion 1413 is connected to the side of the bottom surface of the second shell 120 away from the first shell 110, the plurality of fifth fixing portions 1411 are connected to the eighth fixing portion 1423, and the plurality of fifth fixing portions 1411 and the eighth fixing portion 1423 are connected to the vehicle body. In the direction away from the second shell 120 along the second direction OY, the distance between the third connection portion 1412 and the fourth connection portion 1422 along the first direction OX gradually decreases, and the end of the seventh fixing portion 1421 away from the fourth connection portion 1422 is connected to the outer wall of the second shell 120, as shown in FIG. Figure 10 and Figure 12 .

[0074] Specifically, the fifth fixing portion 1411 is at an angle to the third connecting portion 1412 , preferably vertically; the sixth fixing portion 1413 is at an angle to the third connecting portion 1412 , preferably vertically; the seventh fixing portion 1421 is at an angle to the fourth connecting portion 1422 ; and the eighth fixing portion 1423 is at an angle to the fourth connecting portion 1422 .

[0075] In this embodiment, by connecting the fifth fixing portion 1411, the third connecting portion 1412, and the sixth fixing portion 1413 in sequence, and the fifth fixing portion 1411 and the sixth fixing portion 1413 are in opposite extending directions with respect to the third connecting portion 1412, a folding structure similar to a Z shape is formed to constitute the second support plate 141. The seventh fixing portion 1421, the fourth connecting portion 1422, and the eighth fixing portion 1423 are connected in sequence, and the seventh fixing portion 1421 and the eighth fixing portion 1423 are in opposite extending directions with respect to the fourth connecting portion 1422, so as to form a folding structure similar to a Z shape to constitute the second support reinforcement plate 142. Thus, on the premise of ensuring the support strength, the second support plate 141 and the second support reinforcement plate 142 are extended in a direction away from the second housing 120. This not only improves the energy absorption and buffering distance of the second support assembly 140 against side collisions of the battery pack box body 100, but also enables the second support assembly 140 to be extended so as to connect multiple fifth fixing portions 1411 and eighth fixing portions 1423 to the vehicle body. The third connecting portion 1412 is connected to the side surface of the second housing 120, the sixth fixing portion 1413 is connected to the side of the bottom surface of the second housing 120 away from the first housing 110, and one end of the seventh fixing portion 1421 away from the fourth connecting portion 1422 is connected to the side wall of the second housing 120. Thus, a support structure composed of the first support plate 131 and the second support reinforcement plate 142 is formed between the connection of the second support assembly 140 and the vehicle body and the second housing 120. And the support force for the second housing 120 is provided by the third connecting portion 1412 and the sixth fixing portion 1413 of the second support plate 141, and is strengthened by the seventh fixing portion 1421 of the second support reinforcement plate 142. Along the direction OY away from the second housing 120, the distance between the third connecting portion 1412 and the fourth connecting portion 1422 gradually decreases along the first direction OX. So that when the vehicle body is collided, the collision force transmitted from the fifth fixing portion 1411 and the eighth fixing portion 1423 to the second housing 120 is dispersed to both sides of the second housing 120 along the first direction OX through the second support plate 141 and the second support reinforcement plate 142. Thereby improving the support effect of the second support assembly 140 on the second housing 120, further improving the side anti-collision ability of the battery pack box body 100, and improving the protection ability for the internal battery pack. In this embodiment, the third connecting portion 1412 and the side surface of the second housing 120 are welded by solder joints, and the sixth fixing portion 1413 and the side of the bottom surface of the second housing 120 away from the first housing 110 are welded by solder joints. Thus, the second support plate 141 is connected to the adjacent surfaces on both sides of the second housing 120 from two directions, improving the connection strength between the second support plate 141 and the second housing 120.

[0076] Specifically, multiple fifth fixing portions 1411 and eighth fixing portions 1423 are welded by solder joints.

[0077] Refer toFigure 10 and Figure 13 Specifically, a third connecting hole 126 is formed on the bottom wall of the second shell 120, and a fourth connecting hole 146 is formed on the sixth fixing portion 1413. The second supporting assembly 140 is further fixed to the second shell 120 by connecting members such as bolts or screws passing through the third connecting hole 126 and the fourth connecting hole 146.

[0078] See also Figure 9 and Figure 13 In one embodiment, the second support assembly 140 also includes a second positioning pin 161, the fifth fixing portion 1411 is provided with a third positioning hole 144, the eighth fixing portion 1423 is provided with a fourth positioning hole 145, and the second positioning pin 161 is passed through the third positioning hole 144 and the fourth positioning hole 145. By passing the second positioning pin 161 through the third positioning hole 144 and the fourth positioning hole 145, the fifth fixing portion 1411 and the eighth fixing portion 1423 can be initially positioned and connected, which facilitates subsequent welding and connection and fixing operations.

[0079] See also Figure 9 In one embodiment, the second housing 120 is provided with a first flange 127 at an opening edge close to the first housing 110, and one end of the seventh fixing portion 1421 away from the fourth connecting portion 1422 is connected to the first flange 127. Specifically, one side of the seventh fixing portion 1421 close to the first housing 110 along the first direction OX is connected to one side of the first flange 127 away from the first housing 110 along the first direction OX. Preferably, the seventh fixing portion 1421 is welded to the first flange 127 and is further fastened by bolts or screws.

[0080] See also Figure 4 and Figure 10 In one embodiment, a plurality of second grooves 122 are formed on the edge of the second shell 120 on a side away from the first shell 110, and the plurality of second grooves 122 correspond to the plurality of second bracket plates 141 one by one, and the sixth fixing portion 1413 is located in the second groove 122 and connected to the second shell 120. Thus, the sixth fixing portion 1413 does not protrude from the bottom surface of the second shell 120, so that the position of the battery pack case 100 relative to the vehicle body is more stably fitted, and at the same time, when the battery pack case 100 is subjected to a side collision from the direction of the second support assembly 140, the end of the sixth fixing portion 1413 will abut against the side wall of the second groove 122, further offsetting the collision, thereby improving the side collision resistance of the battery pack case 100 and improving the protection of the internal battery pack.

[0081] See also Figure 9 , Figure 12 as well as Figure 13, in one embodiment, a plurality of first reinforcing ribs 143 are provided on the side wall of the second housing 120 connected to the second support assembly 140. The thickness of the first reinforcing ribs 143 gradually expands in the first direction OX away from the first housing 110, thereby enhancing the strength of the side surface of the second housing 120 on the side of the second support assembly 140.

[0082] Refer to Figure 3 , in one embodiment, the battery pack housing 100 further includes a reinforcing plate 150. The edge of the reinforcing plate 150 has a second flanging 152 to form a groove. The outer side wall of the second flanging 152 is connected to the inner side wall of the second housing 120, thereby enhancing the strength of the second housing 120.

[0083] Refer to Figure 2 , in one embodiment, a plurality of second reinforcing ribs 123 are provided on the bottom wall of the second housing 120. A plurality of first hanging holes 124 are formed in the bottom wall of the second housing 120. The first hanging holes 124 are formed in the second reinforcing ribs 123. A second hanging hole 113 is formed in the bottom wall of the first housing 110. The battery is connected to the battery pack housing 100 through the first hanging holes 124 and the second hanging holes 113. The second reinforcing ribs 123 are used to improve the strength of the bottom wall of the second housing 120. The first hanging holes 124 are formed in the second reinforcing ribs 123, so as not to reduce the strength of the second housing 120 at the weak position of the second housing 120.

[0084] Refer to Figure 9 , preferably, a plurality of third reinforcing ribs 147 are provided on the fourth connecting portion 1422. The thickness of the second reinforcing ribs 123 gradually expands in the direction close to the eighth fixing portion 1423. The plurality of third reinforcing ribs 147 are arranged in sequence along the third direction OZ.

[0085] Refer to Figure 3 , specifically, the reinforcing plate is provided with a fourth reinforcing rib 151 to improve the strength of the reinforcing plate. At the same time, the reinforcing plate is provided with a plurality of holes to reduce the weight of the reinforcing plate, thereby reducing the weight of the battery pack housing 100.

[0086] Preferably, the above-mentioned first housing 110, second housing 120 and reinforcing plate are all stamped steel plates, with low cost. The connection methods between the components of the battery pack housing 100 are mainly welding points and bolts, and subsequent maintenance and replacement are relatively convenient.

[0087] Refer to Figure 9 , preferably, a third flanging 112 is provided at the opening edge of the first housing 110 close to the second housing 120. The first flanging 127 corresponds to and is connected to the third flanging 112, thereby connecting the first housing 110 and the second housing 120 and forming a receiving cavity 111.

[0088] Refer to Figure 1, preferably, the first housing 110 is provided with a fifth reinforcing rib 114, and the second hanging hole 113 is opened in the fifth reinforcing rib 114.

[0089] Specifically, on both side walls of the second housing 120 arranged along the third direction OZ, necessary openings such as a power output hole, a power input hole, a coolant input hole, a coolant output hole, and a controller wiring harness hole are opened for the interaction between the battery pack and the vehicle body to realize the specific functions of the battery pack. The opening method, position, size, and shape are not limited herein and only need to be designed and processed according to the actual situation.

[0090] An embodiment of the present application further provides a vehicle (not shown in the figure), and the vehicle includes: a vehicle body and the battery pack housing 100.

[0091] During the actual installation of the above-mentioned battery pack housing 100 on the vehicle body, first, the battery pack is placed into the second housing 120, and the first housing 110 is buckled with the second housing 120 along the first direction OX so that the battery pack is located in the accommodation cavity 111. Subsequently, the first support assembly 130 and the second support assembly 140 are respectively connected to the second housing 120. Then, one end of the first support assembly 130 away from the second housing 120 is connected to the vehicle body, and one end of the second support assembly 140 away from the second housing 120 is connected to the vehicle body, thereby limiting both ends of the battery pack housing 100 in the second direction OY to the vehicle body, and further fixedly connecting the battery pack housing 100 to the installation position on the vehicle body. At the same time, the first support assembly 130 and the second support assembly 140 are respectively connected to the two outer side walls of the second housing 120 arranged along the second direction OY, thereby increasing the supporting force of the second housing 120 in the second direction OY. When the battery pack housing 100 is subjected to a side collision, the first support assembly 130 and the second support assembly 140 on the side will provide a certain supporting force to the first housing 110 and the second housing 120, preventing the battery in the accommodation cavity 111 from being squeezed and improving the safety of the battery pack housing 100.

[0092] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0093] The above-described embodiments only represent several implementation manners of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A battery pack box, characterized in that: The battery pack box comprises: a first shell; A second shell is arranged and buckled with the first shell along a first direction, and the first shell and the second shell are connected to form a receiving cavity for receiving a battery pack; a first support assembly; A second support assembly, wherein two outer side walls of the second shell arranged along the second direction are respectively connected to the first support assembly and the second support assembly, an end of the first support assembly facing away from the second shell is connected to the vehicle body, and an end of the second support assembly facing away from the second shell is connected to the vehicle body; The first direction is perpendicular to the second direction.

2. The battery pack case according to claim 1, characterized in that: The first support assembly includes a first bracket plate and a first bracket reinforcement plate; The first bracket plate is connected to the second shell, the first bracket reinforcement plate is stacked and connected to the first bracket plate, and one end of the first bracket reinforcement plate away from the second shell and one end of the first bracket plate away from the second shell are both connected to the vehicle body.

3. The battery pack case according to claim 2, characterized in that: The first bracket plate includes a first fixing portion, a first connecting portion, and a second fixing portion connected in sequence, and the first fixing portion and the second fixing portion extend in opposite directions relative to the first connecting portion; the first bracket reinforcement plate includes a third fixing portion, a second connecting portion, and a fourth fixing portion connected in sequence, and the third fixing portion and the fourth fixing portion extend in opposite directions relative to the second connecting portion; The first fixing portion is attached to and connected with the third fixing portion, the first connecting portion is attached to and connected with the second connecting portion, and the second fixing portion is attached to and connected with the fourth fixing portion; the first fixing portion and the third fixing portion are connected to the vehicle body; The first connecting portion is connected to the outer side wall of the second shell, and the second fixing portion is connected to a side of the bottom surface of the second shell facing away from the first shell.

4. The battery pack case according to claim 3, characterized in that: The first supporting assembly further includes a first positioning pin, the first fixing portion defines a first positioning hole, the third fixing portion defines a second positioning hole, and the first positioning pin passes through the first positioning hole and the second positioning hole.

5. The battery pack case according to claim 3, characterized in that: A first groove is formed at an edge of the second shell away from a side surface of the first shell, and the second fixing portion is located in the first groove and connected to the second shell.

6. The battery pack case according to claim 5, characterized in that: The battery pack case includes a plurality of the first supporting components, and the second shell is provided with a plurality of the first grooves; The plurality of first grooves are arranged along the third direction, and the plurality of first grooves correspond to the plurality of first supporting components one by one; The first direction, the second direction and the third direction are perpendicular to each other.

7. The battery pack case according to claim 1, characterized in that: The second support assembly includes a plurality of second bracket plates and a second bracket reinforcement plate; The second bracket plate includes a fifth fixing portion, a third connecting portion, and a sixth fixing portion connected in sequence, and the fifth fixing portion and the sixth fixing portion extend in opposite directions relative to the third connecting portion; the second bracket reinforcement plate includes a seventh fixing portion, a fourth connecting portion, and an eighth fixing portion connected in sequence, and the seventh fixing portion and the eighth fixing portion extend in opposite directions relative to the fourth connecting portion; The third connecting portion is connected to the outer side wall of the second shell, the sixth fixing portion is connected to the side of the bottom surface of the second shell facing away from the first shell, the plurality of the fifth fixing portions are connected to the eighth fixing portion, and the plurality of the fifth fixing portions and the eighth fixing portion are connected to the vehicle body; Along the second direction away from the second shell, the distance between the third connection portion and the fourth connection portion along the first direction gradually decreases, and one end of the seventh fixing portion away from the fourth connection portion is connected to the outer side wall of the second shell.

8. The battery pack case according to claim 7, characterized in that: A first flange is provided at an opening edge of the second shell close to the first shell, and an end of the seventh fixing portion facing away from the fourth connecting portion is connected to the first flange.

9. The battery pack case according to claim 7, characterized in that: A plurality of second grooves are formed at an edge of a side surface of the second shell away from the first shell, and the plurality of second grooves correspond one-to-one to the plurality of second bracket plates. The sixth fixing portion is located in the second groove and connected to the second shell.

10. The battery pack case according to claim 7, characterized in that: A side wall of the second shell body connected to the second supporting assembly is provided with a plurality of first reinforcing ribs, and the thickness of the first reinforcing ribs gradually expands along the first direction away from the first shell body.

11. The battery pack case according to claim 1, characterized in that: The battery pack case also includes a reinforcing plate, an edge of the reinforcing plate has a second flange to form a groove, and an outer side wall of the second flange is connected to an inner side wall of the second shell.

12. The battery pack case according to claim 1, characterized in that: The bottom wall of the second shell is provided with a plurality of second reinforcing ribs, the bottom wall of the second shell is provided with a plurality of first hanging point holes, the first hanging point holes are provided on the second reinforcing ribs, the bottom wall of the first shell is provided with a second hanging point hole, and the battery is connected to the battery pack box through the first hanging point holes and the second hanging point holes.

13. A vehicle, characterized in that: The vehicle comprises: a vehicle body and a battery pack box according to any one of claims 1-12.

Images