Battery box, battery and vehicle

Abstract

The invention relates to a battery box, a battery and a vehicle, and belongs to the technical field of vehicles. The battery box comprises a box body and a separator, the separator is arranged in the box body and divides the interior of the box body into an electrical cavity and a buffer cavity, and the electrical cavity is used for accommodating a battery module. The interior of the box body is divided into the electrical cavity and the buffer cavity through the partition piece, so that when a vehicle collides, the buffer cavity absorbs part of impact energy and reduces the impact energy directly acting on the electrical cavity, and therefore a front wall plate and a front floor which are connected with the front auxiliary frame are not prone to intruding into the electrical cavity, and the service life of the front auxiliary frame is prolonged. Therefore, the battery module in the electrical cavity can be protected, and the high-voltage risk of the battery can be reduced.

Description

Technical Field

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

[0002] In new energy vehicles, a certain clearance distance is usually required between the front subframe and the battery to prevent the front subframe from moving and causing the connected front panel and front floor to squeeze the battery during a head-on collision. In related technologies, the installation space between the front subframe and the battery is limited, the clearance distance is insufficient, and the front panel and front floor are easy to invade the battery, posing a high voltage risk. Summary of the invention

[0003] The embodiments of the present application provide a battery box, a battery and a vehicle to reduce the risk of high voltage in the battery.

[0004] In order to achieve the above-mentioned purpose, according to the first aspect of the present application, a battery box is provided, which includes a box body and a partition; the partition is arranged in the box body to divide the interior of the box body into an electrical cavity and a buffer cavity, and the electrical cavity is used to accommodate a battery module.

[0005] In a possible implementation, the box body includes a frame and a bottom plate, the frame is arranged around the bottom plate, and the partition is arranged on the bottom plate.

[0006] In a possible implementation, the frame includes a first end beam, and the first end beam is located on a side of the partition away from the electrical cavity and is arranged opposite to the partition.

[0007] In a possible implementation, the battery box further includes a support member, which is disposed in the buffer cavity and supported between the first end beam and the partition member.

[0008] In a possible implementation manner, a plurality of the support members are provided, and the plurality of the support members are arranged spaced apart from each other along an extension direction of the partition member.

[0009] In a possible implementation, the first end beam includes a straight section and an inclined section, the inclined section is provided at at least one end of the straight section, and an angle between the straight section and the inclined section faces the partition.

[0010] In a possible implementation, the frame also includes a second end beam, a first side beam and a second side beam, the first end beam, the first side beam, the second end beam and the second side beam are connected end to end in sequence, the opposite ends of the partition are respectively connected to the first side beam and the second side beam, the partition, the first side beam, the second end beam and the second side beam enclose and limit the electrical cavity, and the partition, the first side beam, the first end beam and the second side beam enclose and limit the buffer cavity.

[0011] In a possible implementation, the first end beam includes a straight section and a first inclined section, one end of the first inclined section is connected to the straight section, and the other end is connected to the first side beam, and the angle between the first inclined section and the straight section faces the partition.

[0012] In a possible implementation, the first end beam further includes a second inclined section, which is located at an end of the straight section away from the first inclined section and connects the straight section and the second side beam, and the angle between the second inclined section and the straight section faces the partition.

[0013] In a possible implementation manner, the partition is an expansion beam.

[0014] According to a second aspect of the present application, a battery is provided, the battery comprising a battery box according to any embodiment of the first aspect.

[0015] According to a third aspect of the present application, a vehicle is provided, the vehicle comprising a battery according to any embodiment of the second aspect.

[0016] In a possible implementation, the vehicle further includes a front subframe, the front subframe and the battery are arranged along the length direction of the vehicle, and the buffer cavity is located on a side of the electrical cavity close to the front subframe.

[0017] In a possible implementation, the front subframe includes a subframe body and a protection bar, wherein the protection bar is disposed on a side of the subframe body close to the battery, the protection bar is closer to the battery than the subframe body, and the protection bar extends along the width direction of the vehicle.

[0018] In a possible implementation manner, an end surface of the protection rod facing the battery is a plane; and / or an end surface of the battery box facing the front subframe is a plane.

[0019] In a possible implementation, the protection bar has a first end surface facing the battery, the battery box has a second end surface facing the front subframe, and the first end surface is parallel to the second end surface.

[0020] In a possible implementation manner, the battery and the front subframe are spaced apart.

[0021] In a possible implementation, a distance L between the battery and the front subframe satisfies 0 mm < L ≤ 10 mm.

[0022] In the battery box of the embodiment of the present application, the interior of the box body is divided into an electrical chamber and a buffer chamber by providing a partition, so that when the vehicle collides, the buffer chamber absorbs part of the impact energy and reduces the impact energy directly acting on the electrical chamber. As a result, the front panel and front floor connected to the front subframe are not easy to invade the electrical chamber, which helps to protect the battery module in the electrical chamber and reduce the risk of battery high voltage.

[0023] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0025] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0026] Figure 1 A schematic diagram of a partial structure of a vehicle provided in an embodiment of the present application;

[0027] Figure 2 for Figure 1 Bottom view of

[0028] Figure 3 A schematic diagram of the structure of the front subframe and the battery provided in an embodiment of the present application;

[0029] Figure 4 A side view assembly diagram of the front subframe and the battery provided in an embodiment of the present application;

[0030] Figure 5 A schematic diagram of the structure of the front subframe provided in an embodiment of the present application;

[0031] Figure 6 A top view assembly diagram of a front subframe provided in an embodiment of the present application;

[0032] Figure 7 A schematic diagram of the structure of a battery box provided in an embodiment of the present application.

[0033] Description of reference numerals:

[0034] 100-battery; 10-battery box; 11-box body; 111-frame; 1111-first end beam; 11113-straight section; 111131-second end face; 11111-inclined section; 11111a-first inclined section; 11111b-second inclined section; 1112-second end beam; 1113-first side beam; 1114-second side beam; 115-buffer cavity; 116-electrical cavity; 112-bottom plate; 12-partition; 13-support member; 1000-vehicle; 200-front subframe; 210-protective rod; 211-first end face; 220-frame longitudinal beam; 230-front cross beam; 240-rear cross beam; Y-length direction; Z-height direction; X-width direction. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0036] Usually, the passenger compartment of a vehicle is enclosed by components such as a front panel and a front floor, and the front panel and the front floor are connected to the front subframe. When a collision occurs in front of the vehicle, the front subframe moves backward, causing the front panel and the front floor connected thereto to invade the battery. In the related art, the battery is kept at a certain avoidance distance from the front subframe, that is, the battery is kept a little further away from the subframe to improve the above technical problems. However, due to limited assembly space, especially in small vehicles, the avoidance distance of the battery is greatly restricted, the avoidance effect is not good, and the front panel and the front floor are very easy to invade the battery, resulting in the risk of high voltage of the battery.

[0037] In view of this, the embodiment of the present application provides a battery box 10, a battery 100 and a vehicle 1000. Figures 1 to 4 , Figures 1 to 4 The structure related to the vehicle 1000 to which the battery 100 provided in the embodiment of the present application is applicable. Exemplarily, the vehicle 1000 includes a front subframe 200 and the battery 100, and along the length direction of the vehicle 1000, the subframe 200 is located in front of the battery 100, and the battery 100 includes a battery box 10 and a battery module (not shown in the figure) contained in the battery box 10.

[0038] For the convenience of description, the X direction is defined as the width direction of the vehicle 1000 , the Y direction is defined as the length direction of the vehicle 1000 , and the Z direction is defined as the height direction of the vehicle 1000 .

[0039] The battery box 10 according to the embodiment of the present application is described in detail below with reference to the accompanying drawings.

[0040] Reference Figure 7 , and combined with reference Figures 1 to 4 According to a first aspect of the present application, a battery box 10 is provided, and the battery box 10 includes a box body 11 and a partition 12. The partition 12 is disposed in the box body 11, and divides the interior of the box body 11 into an electrical chamber 116 and a buffer chamber 115, wherein the electrical chamber 116 is used to accommodate a battery module, and the battery module is used to store or release electrical energy.

[0041] It can be understood that the battery module and other electrical connectors (such as bus bars) are accommodated in the electrical cavity 116 .

[0042] The buffer cavity 115 refers to a structure provided in the battery box 10 for absorbing and mitigating external impact forces, so as to protect the battery modules and other electrical connectors in the electrical cavity 116 from being damaged.

[0043] The buffer chamber 115 is located at a side of the electrical chamber 116 close to the front sub-frame 200 .

[0044] The buffer cavity 115 may be a hollow cavity. Of course, a buffer material or a supporting structure may also be disposed in the buffer cavity 115 .

[0045] In the embodiment of the present application, a partition 12 is provided to divide the interior of the box body 11 into an electrical chamber 116 and a buffer chamber 115, so that when the vehicle 1000 collides, the buffer chamber 115 absorbs part of the impact energy and reduces the impact energy directly acting on the electrical chamber 116. As a result, the front panel and the front floor connected to the front subframe 200 are not easy to invade the electrical chamber 116, which helps to protect the battery module in the electrical chamber 116 and reduce the high voltage risk of the battery 100.

[0046] In addition, compared with the method of mitigating the intrusion of the front panel and the front floor into the battery 100 by only setting an avoidance distance, the buffer cavity 115 is provided to reduce the avoidance distance requirement between the front subframe 200 and the battery 100, thereby allowing the front subframe 200 and the battery 100 to be closer.

[0047] In some embodiments, the separator 12 is an expansion beam, which can be used to fix and position the battery module, improve the structural stability of the battery box 10, and further improve the structural stability of the battery 100.

[0048] Reference Figure 7 and Figure 3 In some embodiments, the box body 11 includes a frame 111 and a bottom plate 112 , the frame 111 is arranged around the bottom plate 112 , and the partition 12 is arranged on the bottom plate 112 .

[0049] The frame 111 may be formed by connecting a plurality of side beams end to end in sequence, wherein the partition 12 may be surrounded by one or more side beams to define a buffer cavity 115 .

[0050] Exemplarily, the frame 111 and the bottom plate 112 are configured in a rectangular shape, and the frame 111 includes four side beams. The partition 12 may be combined with one side beam of the frame 111 to define the buffer cavity 115 , or may be combined with multiple side beams of the frame 111 to define the buffer cavity 115 .

[0051] In some embodiments, two ends of the partition 12 are connected to different side beams of the frame 111. The connection method of the partition 12 and the frame 111 may include but is not limited to bonding, welding, screwing, etc.

[0052] In some embodiments, the partition 12 is connected to the bottom plate 112. The connection method between the partition 12 and the bottom plate 112 may include but is not limited to bonding, welding, screwing, etc.

[0053] Reference Figure 7 In some embodiments, the frame 111 includes a first end beam 1111 , and the first end beam 1111 is located on a side of the partition 12 away from the electrical cavity 116 , and is arranged opposite to the partition 12 .

[0054] The first end beam 1111 is located at a side of the buffer cavity 115 close to the front sub-frame 200 .

[0055] Exemplarily, the first end beam 1111 and the partition 12 are arranged opposite to each other along the length direction Y of the vehicle 1000 .

[0056] In the embodiment of the present application, by arranging the first end beam 1111 on the side of the partition 12 away from the electrical cavity 116, the structural strength of the buffer cavity 115 is increased. In this way, when the battery 100 is impacted, the first end beam 1111 can better disperse and absorb the impact energy, reduce the impact energy directly acting on the buffer cavity 115, thereby alleviating the deformation degree of the buffer cavity 115, and further protecting the battery module in the electrical cavity 116, which helps to reduce the high voltage risk of the battery 100.

[0057] In some embodiments, a flow channel (not shown in the figure) for accommodating a heat exchange medium is disposed inside the bottom plate 112 , and the heat exchange medium is used to adjust the temperature of the battery module in the electrical cavity 116 .

[0058] In some embodiments, the first end beam 1111 is provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are connected to the flow channel to realize the circulation of the heat exchange medium.

[0059] Reference Figure 7In some embodiments, the battery box 10 further includes a support member 13 , which is disposed in the buffer cavity 115 and supported between the first end beam 1111 and the partition member 12 .

[0060] Exemplarily, the first end beam 1111 and the partition 12 are arranged opposite to each other along the length direction Y of the vehicle 1000 , and the support member 13 extends along the length direction Y of the vehicle 1000 .

[0061] In some embodiments, the support member 13 and the partition member 12 are integrally formed.

[0062] In some embodiments, the support member 13 is detachably connected to the partition member 12 .

[0063] In some embodiments, the partition 12 is plugged into the support 13 .

[0064] In some embodiments, the partition 12 is provided with a slot for the support 13 to be inserted into.

[0065] In some embodiments, the support member 13 is connected to the base plate 112 .

[0066] In some embodiments, along the height direction Z of the vehicle 1000 , the partition 12 protrudes from the support 13 .

[0067] In some embodiments, the structural strength of the support member 13 is greater than the structural strength of the partition member 12 .

[0068] In the embodiment of the present application, by providing the support member 13, the support member 13 absorbs part of the impact energy and reduces the impact energy directly acting on the partition 12, thereby alleviating the deformation degree of the buffer cavity 115, thereby protecting the battery module in the electrical cavity 116, which helps to reduce the high voltage risk of the battery 100.

[0069] In some embodiments, a plurality of support members 13 are provided, and the plurality of support members 13 are arranged at intervals from each other along the extension direction of the partition 12 , which helps to alleviate the deformation of the buffer cavity 115 .

[0070] Exemplarily, three support members 13 are provided, and the three support members 13 are arranged at intervals along the width direction X of the vehicle 1000 .

[0071] Reference Figure 7In some embodiments, the first end beam 1111 includes a straight section 11113 and an inclined section 11111, and the inclined section 11111 is disposed at at least one end of the straight section 11113, and the angle between the straight section 11113 and the inclined section faces the partition 12. Such an arrangement helps to improve the structural strength of the first end beam 1111. In addition, the impact energy can be transmitted to the inclined section 11111 through the straight section 11113, so that the impact energy is transmitted to both sides of the first end beam 1111, thereby alleviating the impact energy directly acting on the electrical cavity 116.

[0072] The inclined section 11111 may be provided at one end of the straight section 11113, or the inclined sections 11111 may be provided at both ends of the straight section 11113 (e.g. Figure 7 shown).

[0073] The extending direction of the straight section 11113 and the extending direction of the partition 12 may be parallel to each other. For example, the straight section 11113 and the partition 12 both extend along the width direction X of the vehicle 1000 .

[0074] In some embodiments, the angle between the straight section 11113 and the inclined section 11111 is between 130° and 140°. For example, the angle between the straight section 11113 and the inclined section 11111 is 131°, 132°, 133°, 134°, 135°, 136°, 137°, 138°, 139°, 140° and any value therebetween.

[0075] In some embodiments, the angle between the straight section 11113 and the inclined section 11111 is 135°.

[0076] In some embodiments, the straight section 11113 and the inclined section 11111 are integrally formed.

[0077] In some embodiments, along the extension direction of the straight section 11113, the thickness of the straight section 11113 gradually decreases from the middle to the two ends of the straight section 11113. The thickness of the straight section 11113 refers to the dimension of the straight section 11113 along the direction perpendicular to the thickness of the bottom plate 112 (such as the Z direction in the figure).

[0078] In some embodiments, along the extension direction of the straight section 11113 , the end of the straight section 11113 transitions smoothly with the inclined section 11111 .

[0079] Reference Figure 7In some embodiments, the frame 111 further includes a second end beam 1112, a first side beam 1113, and a second side beam 1114. The first end beam 1111, the first side beam 1113, the second end beam 1112, and the second side beam 1114 are connected end to end in sequence, and the opposite ends of the partition 12 are connected to the first side beam 1113 and the second side beam 1114 respectively. The partition 12, the first side beam 1113, the second end beam 1112, and the second side beam 1114 enclose and limit the electrical cavity 116, and the partition 12, the first side beam 1113, the first end beam 1111, and the second side beam 1114 enclose and limit the buffer cavity 115. Such an arrangement helps to improve the structural strength of the battery box 10.

[0080] Exemplarily, the first end beam 1111 and the second end beam 1112 are spaced apart along the length direction Y of the vehicle 1000 , and the first side beam 1113 and the second side beam 1114 are spaced apart along the width direction X of the vehicle 1000 .

[0081] In some embodiments, one end of the partition 12 is welded to the first side beam 1113 , and the other end is welded to the second side beam 1114 .

[0082] Reference Figure 7 In some embodiments, two inclined sections 11111 are provided, namely a first inclined section 11111a and a second inclined section 11111b.

[0083] One end of the first inclined section 11111a is connected to the straight section 11113 , and the other end is connected to the first side beam 1113 , and the angle between the first inclined section 11111a and the straight section 11113 faces the partition 12 .

[0084] In some embodiments, the second inclined section 11111b is located at one end of the straight section 11113 away from the first inclined section 11111a, the second inclined section 11111ab connects the straight section 11113 and the second side beam 1114, and the angle between the second inclined section 11111ab and the straight section 11113 faces the partition 12.

[0085] Typically, the battery 100 is fixed to the lower vehicle body via the first side beam 1113 and the second side beam 1114. In the embodiment of the present application, the impact energy is conducted to the first side beam 1113 via the first inclined section 11111a, and the impact energy is conducted to the second side beam 1114 via the second inclined section 11111b, so that the impact energy is transmitted to the lower vehicle body via the first side beam 1113 and the second side beam 1114, thereby alleviating the impact energy directly acting on the electrical cavity 116.

[0086] In some embodiments, the first side beam 1113 or the second side beam 1114 is provided with a mounting point, wherein the mounting point may be a threaded hole or a threaded sleeve.

[0087] In some embodiments, the support member 13 is supported between the straight section 11113 and the partition 12 .

[0088] In some embodiments, the support member 13 and the first inclined section 11111 a are spaced apart from each other along the extension direction of the partition member 12 .

[0089] In some embodiments, the support member 13 and the second inclined section 11111 b are spaced apart from each other along the extension direction of the partition member 12 .

[0090] According to the second aspect of the present application, a battery 100 is provided, and the battery 100 includes the battery box 10 of any embodiment of the first aspect. Since the battery 100 includes the battery box 10 of any embodiment of the first aspect, the battery 100 has all the beneficial effects of the battery box 10, which will not be described in detail here.

[0091] Reference Figures 1 to 6 According to the third aspect of the present application, a vehicle 1000 is provided, and the vehicle 1000 includes the battery 100 of any embodiment of the second aspect. Since the vehicle 1000 includes the battery 100 of any embodiment of the second aspect, the vehicle 1000 has all the beneficial effects of the battery 100, which will not be described in detail here.

[0092] The vehicle 1000 may include but is not limited to a plug-in hybrid vehicle or a new energy vehicle.

[0093] In some embodiments, the vehicle 1000 further includes a front subframe 200, which is arranged with the battery 100 along the length direction Y of the vehicle 1000, and the buffer chamber 115 is located on a side of the electrical chamber 116 close to the front subframe 200. It can be understood that the front subframe 200 is located in front of the battery 100.

[0094] The front subframe 200 is an important part of the chassis of the vehicle 1000 and is located at the front of the vehicle 1000. The front subframe 200 can be connected to the rear end of the front longitudinal beam of the vehicle body through multiple suspension points. A battery 100 bracket or support can be set between the rear longitudinal beams of the vehicle 1000. The bracket or support is fixedly connected to the longitudinal beam by bolts, welding, etc., and the battery 100 is placed on the bracket or support.

[0095] Refer to 5 and Figure 6 In some embodiments, the front subframe 200 includes a subframe body and a protection bar 210 . The protection bar 210 is disposed on a side of the subframe 200 body close to the battery 100 . The protection bar 210 is closer to the battery 100 than the subframe body. The protection bar 210 extends along the width direction X of the vehicle 1000 .

[0096] It can be understood that when the front sub-frame 200 moves backward, the protection bar 210 contacts the battery 100 before the sub-frame body.

[0097] The protection rod 210 can be configured as a rectangular rod or a square rod. Exemplarily, the protection rod 210 is a hollow rectangular rod.

[0098] Reference Figure 5 In some embodiments, the subframe body includes a pair of frame longitudinal beams 220, a front cross beam 230, and a rear cross beam 240. The pair of frame longitudinal beams 220 extend along the length direction Y of the vehicle 1000 and are arranged at intervals along the width direction X of the vehicle 1000. The front cross beam 230 extends along the width direction X of the vehicle 1000, and the front cross beam 230 is connected between the pair of frame longitudinal beams 220. The rear cross beam 240 extends along the width direction X of the vehicle 1000, and the rear cross beam 240 is connected between the pair of frame longitudinal beams 220. The front cross beam 230 is located in front of the rear cross beam 240, and the rear cross beam 240 is located between the front cross beam 230 and the battery 100.

[0099] The end of the frame rail 220 away from the battery 100 is the front end, and the end close to the battery 100 is the rear end. The protection bar 210 is connected to the rear end of the frame rail 220 .

[0100] In some embodiments, the guard bar 210 is located below the rear end of the frame rail 220 .

[0101] In some embodiments, the protection bar 210 is connected to the rear end of the frame rail 220 by bolts.

[0102] Since the rear end of the frame longitudinal beam 220 is close to the battery 100, the rear end of the frame longitudinal beam 220 is easy to invade the battery 100 during the rearward movement of the subframe, resulting in a high voltage risk. In the embodiment of the present application, by providing a protective rod 210 on the side of the subframe body close to the battery 100, and making the protective rod 210 close to the battery 100, when a collision occurs in front of the vehicle 1000, the impact energy is dispersed to the protective rod 210 through the subframe body, avoiding stress concentration on the rear end of the frame longitudinal beam 220, thereby, the subframe body is not easy to invade the battery 100, which helps to reduce the amount of invasion of the front subframe 200 and the front panel and front floor connected to the front subframe 200 into the battery 100, thereby alleviating the high voltage risk.

[0103] In addition, by providing the protection bar 210, the avoidance distance requirement between the front subframe 200 and the battery pack is reduced, so that the front subframe 200 and the battery 100 can be arranged close to or in direct contact, which helps to reduce space occupancy and assemble batteries 100 with higher energy density.

[0104] Compared with transmitting force only through the mounting point of the front subframe 200, in the vehicle 1000 provided in the embodiment of the present application, the battery 100 is used as a head-on collision force transmission structure, and the force transmission path is increased, so that the impact energy can be transmitted to the vehicle body through the mounting point of the front subframe 200, and can also be transmitted to the battery 100 at the rear through the protective bar 210, and evenly transmitted to the front frame 111 of the battery 100 package, and then transmitted to the first side beam 1113 and the second side beam 1114 through the first end beam 1111 and the support member 13, and then transmitted to the lower body through the battery 100 mounting point. In other words, the vehicle 100 has two force transmission paths, which helps to improve the energy absorption effect, alleviate the invasion of the front panel and the front floor into the battery 100, and thus alleviate the risk of high voltage of the battery 100.

[0105] In some embodiments, the front subframe 200 is in contact with the battery 100 , which helps to reduce space occupation.

[0106] In some embodiments, there is an assembly gap between the front sub-frame 200 and the battery 100 , which helps to reduce the difficulty of assembling the battery 100 and the front sub-frame 200 .

[0107] In some embodiments, the end surface of the protection bar 210 facing the battery 100 is a plane, which helps to increase the contact area between the protection bar 210 and the battery 100 and relieve the stress concentration caused by the rearward movement of the front sub-frame 200.

[0108] In some embodiments, the end surface of the battery box 10 facing the front sub-frame 200 is a plane, which also helps to increase the contact area between the protection bar 210 and the battery 100 and alleviate the stress concentration caused by the rearward movement of the front sub-frame 200.

[0109] Reference Figure 4 In some embodiments, the protection bar 210 has a first end face 211 facing the battery 100, and the battery box 10 has a second end face 111131 facing the front sub-frame 200, and the first end face 211 is parallel to the second end face 111131. This helps to increase the contact area between the protection bar 210 and the battery 100, and alleviate the stress concentration caused by the rearward movement of the front sub-frame 200.

[0110] In some embodiments, the battery 100 is spaced apart from the front sub-frame 200 .

[0111] In some embodiments, the distance between the battery 100 and the front sub-frame 200 is L, which satisfies 0mm<L≤10mm. Such a configuration can take into account both the difficulty of assembling the battery 100 and the front sub-frame 200 and the space utilization.

[0112] The spacing between the battery 100 and the front sub-frame 200 refers to the spacing distance between the battery 100 and the front sub-frame 200 along the length direction Y of the vehicle 1000 .

[0113] For example, the distance between the battery 100 and the front subframe 200 may be 0.1 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, or any value therebetween.

[0114] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0115] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0116] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0117] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A battery box, characterized in that: include: Box body; The partition is arranged in the box body, and divides the interior of the box body into an electrical chamber and a buffer chamber, wherein the electrical chamber is used to accommodate a battery module.

2. The battery box according to claim 1, characterized in that: The box body comprises a frame and a bottom plate, the frame is arranged around the bottom plate, and the partition is arranged on the bottom plate.

3. The battery box according to claim 2, characterized in that: The frame includes a first end beam, which is located on a side of the partition away from the electrical cavity and is arranged opposite to the partition.

4. The battery box according to claim 3, characterized in that: The battery box also includes: A support member is disposed in the buffer cavity and supported between the first end beam and the partition member.

5. The battery box according to claim 4, characterized in that: The support member is provided with a plurality of The plurality of support members are disposed spaced apart from each other along an extending direction of the partition member.

6. The battery box according to claim 3, characterized in that: The first end beam comprises a straight section and an inclined section, wherein the inclined section is arranged at at least one end of the straight section, and an angle between the straight section and the inclined section faces the partition.

7. The battery box according to claim 3, characterized in that: The frame also includes a second end beam, a first side beam and a second side beam. The first end beam, the first side beam, the second end beam and the second side beam are connected end to end in sequence. The opposite ends of the partition are respectively connected to the first side beam and the second side beam. The partition, the first side beam, the second end beam and the second side beam enclose and limit the electrical cavity. The partition, the first side beam, the first end beam and the second side beam enclose and limit the buffer cavity.

8. The battery box according to claim 7, characterized in that: The first end beam comprises a straight section and a first inclined section, one end of the first inclined section is connected to the straight section, and the other end is connected to the first side beam, and an angle between the first inclined section and the straight section faces the partition.

9. The battery box according to claim 8, characterized in that: The first end beam also includes a second inclined section, which is located at an end of the straight section away from the first inclined section and connects the straight section and the second side beam, and the angle between the second inclined section and the straight section faces the partition.

10. The battery box according to any one of claims 1 to 9, characterized in that: The partition is an expansion beam.

11. A battery, characterized in that: A battery box comprising any one of claims 1-10.

12. A vehicle, characterized in that: Comprising the battery of claim 11.

13. The vehicle according to claim 12, characterized in that The vehicle further comprises a front sub-frame, wherein the front sub-frame and the battery are arranged along the length direction of the vehicle, and the buffer cavity is located on a side of the electrical cavity close to the front sub-frame.

14. The vehicle according to claim 13, characterized in that The front sub-frame includes a sub-frame body and a protection bar, wherein the protection bar is arranged on a side of the sub-frame body close to the battery, the protection bar is closer to the battery than the sub-frame body, and the protection bar extends along the width direction of the vehicle.

15. The vehicle according to claim 14, characterized in that The end surface of the protection rod facing the battery is a plane; and / or the end surface of the battery box facing the front subframe is a plane.

16. The vehicle according to claim 14, characterized in that The protection bar has a first end surface facing the battery, and the battery box has a second end surface facing the front sub-frame, and the first end surface is parallel to the second end surface.

17. The vehicle according to claim 13, characterized in that The battery is spaced apart from the front subframe.

18. The vehicle according to claim 17, characterized in that The distance between the battery and the front subframe is L, which satisfies 0mm<L≤10mm.

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