Battery protection assembly and vehicle

Abstract

The utility model provides a battery protection assembly and a vehicle. The battery protection assembly is fixedly arranged on a vehicle floor, the vehicle floor is used for connecting a front auxiliary frame and a battery, the front auxiliary frame is arranged at the front end of the battery, and the battery protection assembly comprises a guide piece and a floor beam. The floor cross beam is fixedly arranged below the position, between the front auxiliary frame and the battery, of the vehicle floor; wherein at least part of the guide piece is fixedly arranged below the floor cross beam, and the guide piece is arranged right behind the connecting position of the front auxiliary frame and the vehicle floor; the guiding piece comprises a first edge and a second edge which are fixedly connected, the first edge is arranged on the side close to the front auxiliary frame, and the second edge is arranged on the side close to the battery. The first edge is arranged in a backward inclined mode and used for selectively guiding the front auxiliary frame to move in the set direction not making contact with the battery.

Description

Technical Field

[0001] The utility model belongs to the field of automobile component structures, and in particular relates to a battery protection component and a vehicle. Background Art

[0002] In recent years, new energy vehicle models have become more and more popular with consumers, and their sales share has increased year by year. With the increase in sales of new energy vehicle models, a series of problems have also arisen, such as safety issues and vehicle spontaneous combustion. The spontaneous combustion of batteries in new energy vehicles has also become one of the biggest concerns for consumers when purchasing new energy vehicles. One of the reasons for battery spontaneous combustion is that the thermal management of batteries in new energy vehicle models is out of control, leading to spontaneous combustion. One of the reasons for battery spontaneous combustion is that the front subframe in front of the battery is broken due to external collision and the connection with the vehicle floor is broken, which in turn causes the front subframe to move backward and squeeze, causing damage to the battery. In previous models, battery protection was insufficient, especially for oil-to-electric models.

[0003] Therefore, the existing technology needs to be improved urgently. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a battery protection component and a vehicle, which solves the problem of insufficient battery protection in the event of a head-on collision of the prior art vehicles.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: In the first aspect of the utility model, a battery protection assembly is provided, which is fixedly arranged on the vehicle floor, and the vehicle floor is used to connect the front subframe and the battery. The front subframe is arranged at the front end of the battery, and includes a guide member and a floor crossbeam. The floor crossbeam is fixedly arranged below the position of the vehicle floor between the front subframe and the battery; wherein the guide member is at least partially fixedly arranged below the floor crossbeam, and the guide member is arranged behind the connection between the front subframe and the vehicle floor; the guide member includes a first side and a second side which are fixedly connected, the first side is arranged on a side close to the front subframe, and the second side is arranged on a side close to the battery; the first side is arranged to be tilted backwards, and is used to selectively guide the front subframe to move in a set direction that does not contact the battery.

[0006] As an embodiment of the utility model, it also includes a third side, which is arranged between the first side and the second side, one end of the third side is fixed to the side of the first side close to the battery, and the other end is fixed to the side of the second side close to the front subframe.

[0007] As an embodiment of the utility model, it also includes transverse reinforcement ribs, which are arranged in a first cavity formed by the first side, the second side and the third side, and the transverse reinforcement ribs are used to connect the first side and the second side; optionally, it also includes longitudinal reinforcement ribs, which are used to connect the third side and the transverse reinforcement ribs.

[0008] As an embodiment of the present utility model, the first side is fitted and fixed to a side wall portion of the floor beam close to the front subframe, the second side is fitted and fixed to a side wall portion of the floor beam close to the battery, and the third side is at least partially fitted and fixed to a bottom wall of the floor beam.

[0009] As an embodiment of the present utility model, the first side is fixed to the floor beam by two bolts, the second side is fixed to the floor beam by one bolt, and the connection between the second side and the floor beam is arranged between the two connections between the first side and the floor beam.

[0010] The second aspect of the utility model provides a vehicle, comprising a battery and the battery protection assembly described in the first aspect, wherein the battery is used to provide power for the vehicle, wherein the floor beam of the battery protection assembly comprises a base and a first part, wherein the base is fixedly arranged at the bottom of the vehicle floor and connected to the guide member, the first part is accommodated in a second cavity formed by the base and the vehicle floor, and the first part is arranged at the connection between the guide member and the base.

[0011] As an implementation mode of the utility model, a nut is fixedly provided on the inner wall of the first part at a position corresponding to the connection between the guide and the base, so as to realize the bolt connection among the guide, the base and the first part.

[0012] As an embodiment of the utility model, the front end of the battery is fixedly connected with a front convex portion protruding forward, and floor cross beams are arranged on both sides of the left and right sides of the front convex portion, and the front end of the floor cross beam is flush with the front end of the front convex portion, and the front convex portion is used to electrically connect the battery with an external device; wherein, the floor cross beam also includes a second portion, the second portion is accommodated in the second cavity and fixedly connected to the base, and the second portion is arranged on a side of the base close to the front convex portion; optionally, the floor cross beam also includes a third portion, the third portion is arranged on a side of the base away from the front convex portion, and is used to fix the base and the vehicle floor.

[0013] As an embodiment of the utility model, the battery also includes a buffer frame for being fixedly connected to the base of the floor beam, and a plurality of buffer frames are fixedly arranged on the left and right sides of the connection between the base and the guide member; the buffer frame is a closed rectangular frame, or an open rectangular frame opening toward the ground; optionally, the base is a structure that is narrow in the middle and wide on the left and right sides.

[0014] As an embodiment of the present utility model, the second part is a structure having a third cavity, and the opening of the third cavity is arranged with its back to the ground; optionally, the second part is arranged at a position corresponding to the connection between the buffer frame on the side closest to the front protrusion and the base, and a nut is fixed on the inner wall of the second part at a position corresponding to the connection between the buffer frame on the side closest to the front protrusion and the base, for realizing a bolt connection between the front protrusion, the base and the second part.

[0015] In summary, compared with the prior art, the present invention has at least one of the following beneficial technical effects:

[0016] 1. By arranging a plurality of guide members at the rear end of the front sub-frame and setting the inclination angle of the first sides of the plurality of guide members to guide the front sub-frame to move in a set direction, the guide members can guide the front sub-frame to move in the set direction, thereby well realizing safety protection of the battery when the connection between the front sub-frame and the vehicle floor is disconnected due to external force, thereby improving the safety of the whole vehicle;

[0017] 2. By setting the base, the first part, the second part and the third part, the structural strength of the floor beam can be well guaranteed, thereby ensuring that the process can be stably implemented, which can ensure the increase of the connection strength of the connection between the guide and the floor beam, and also ensure the increase of the connection strength of the entire floor beam;

[0018] 3. The rectangular buffer frame structure located at both ends of the triangular guide is attached to the battery. When the vehicle is deformed in a collision, it can effectively absorb energy and protect the battery from damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the vehicle structure provided by a specific embodiment of the utility model;

[0021] Figure 2It is a bottom view of a vehicle structure provided by a specific embodiment of the utility model;

[0022] Figure 3 It is an exploded view of a floor beam provided by a specific embodiment of the utility model from one perspective;

[0023] Figure 4 A specific embodiment of the utility model provides Figure 2 AA section view;

[0024] Figure 5 A specific embodiment of the utility model provides Figure 2 BB cross-section diagram;

[0025] Figure 6 A specific embodiment of the utility model provides Figure 2 CC profile of ;

[0026] Figure 7 A specific embodiment of the utility model provides Figure 2 DD profile diagram;

[0027] Figure 8 It is an exploded view of a floor beam provided in a specific embodiment of the utility model;

[0028] Fig. 9 It is a structural diagram of a floor beam provided in a specific embodiment of the utility model.

[0029] Description of reference numerals:

[0030] 100, guide member; 110, first side; 120, second side; 130, third side; 141, transverse reinforcing rib; 142, longitudinal reinforcing rib; 143, first cavity;

[0031] 210, battery; 220, buffer frame; 230, front convex part;

[0032] 500, front subframe;

[0033] 610, vehicle floor; 620, floor cross member; 621, base; 622, first part; 623, second part; 624, third part; 625, nut; 6211, second cavity; 6231, third cavity. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. In the present invention, unless otherwise stated, the directional words used, such as "upper", "lower", "left", "right", "front", and "back", generally refer to the upper, lower, left, and right of the device in actual use or working state, specifically the drawing direction in the accompanying drawings.

[0035] In the vehicle operating conditions corresponding to the present invention, in the absence of any contrary explanation, the terms "X direction", "front", and "rear" will be used in relation to the longitudinal direction of the vehicle body, with the vehicle moving forward as the front direction and the vehicle moving backward as the rear direction; the terms "Y direction", "inside", and "outside" will be used in relation to the lateral direction of the vehicle body, with the direction close to the center of the vehicle as the inside and the direction away from the center of the vehicle as the outside; the terms "Z direction", "upper", and "lower" will be used in relation to the vertical direction of the vehicle body, with the upper part of the vehicle as the upper part and the lower part of the vehicle as the lower part. At the same time, in the XYZ coordinate system of the entire vehicle, in the absence of any contrary explanation, the positive X direction is the rear direction of the vehicle, the positive Y direction is the right direction of the vehicle, and the positive Z direction is the upper direction of the vehicle.

[0036] It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments of the present utility model. In addition, in the following embodiments, the description of each embodiment has its own emphasis. For parts not described in detail in one embodiment, please refer to the relevant description of other embodiments.

[0037] Please refer to Figure 1-9 , a battery protection assembly is provided in a specific embodiment of the utility model, the battery 210 is arranged under the seat in the vehicle, preferably under the vehicle floor 610, and the vehicle floor 610 is provided with a floor beam 620 and a front subframe 500 fixedly connected thereto. The front side of the floor beam 620 is relatively fixedly connected to the front subframe 500 through the vehicle floor 610, and the rear side is fixedly connected to the battery 210. It can be understood that the battery 210 is used to provide at least part of the driving energy for the vehicle. In existing vehicles, the battery 210 described in this article is mainly a power battery, and the corresponding vehicle is mainly an electric vehicle, or a hybrid vehicle, or other types of new energy vehicles that need to use batteries to store energy and drive the vehicle forward.

[0038] The guide member 100 is fixedly arranged on the floor cross beam 620, specifically, between the front sub-frame 500 and the battery 210, that is, the front side of the guide member 100 is close to the front sub-frame 500, and the rear side is close to the battery 210. At the same time, the guide member 100 is fixedly arranged on the side of the floor cross beam 620 close to the ground, that is, fixedly arranged at the bottom of the floor cross beam 620, and the guide member 100 is used to guide the front sub-frame 500 to move along the set direction, so that the front sub-frame 500 does not interfere with the battery 210 when moving along the set direction, thereby avoiding the front sub-frame 500 from contacting with the battery 210 and damaging the battery 210 when the connection point between the front sub-frame 500 and the vehicle floor 610 is broken. Preferably, the guide member 100 is preferably triangular extruded aluminum.

[0039] Specifically, the guide member 100 includes a first side 110 and a second side 120 that are fixedly connected, the first side 110 is disposed on a side close to the front sub-frame 500, and the second side 120 is disposed on a side away from the front sub-frame 500. The first side 110 is disposed obliquely backward, that is, an end of the first side 110 of the guide member 100 away from the vehicle floor 610 is disposed closer to the battery 210 than an end of the first side 110 of the guide member 100 close to the vehicle floor 610. The inclination angle of the first side 110 is set to guide the front sub-frame 500 to move in a set direction.

[0040] It can be understood that in the prior art, since the front subframe 500 is fixedly disposed on the vehicle floor 610, generally the front subframe 500 is fixedly connected to the vehicle floor 610 by bolts, when the front end of the vehicle collides, due to the existence of the collision force, it is easy for the bolts at the connection between the front subframe 500 and the vehicle floor 610 to break, which in turn causes the front subframe 500 to approach the battery 210 and the passengers under the action of the collision force, thereby endangering the safety of the passengers.

[0041] According to the solution of the present invention, a plurality of guide members 100 are provided at the rear end of the front sub-frame 500, and the inclination angles of the first sides 110 of the plurality of guide members 100 are set to guide the front sub-frame 500 to move along a set direction. The guide members 100 can guide the front sub-frame 500 to move along a set direction, and the safety protection of the battery 210 can be well achieved when the connection between the front sub-frame 500 and the vehicle floor 610 is disconnected due to external force, thereby improving the safety of the entire vehicle.

[0042] Please continue reading Figure 1-2 , Figure 5 , Figure 7, the first side 110 is fixedly connected to the side wall of the floor beam 620 close to the front subframe 500, and the second side 120 is fixedly connected to the side wall of the floor beam 620 close to the battery 210. The guide member 100 also includes a third side 130, which is arranged between the first side 110 and the second side 120 to connect the first side 110 and the second side 120, so as to further increase the structural strength of the entire guide member 100. Preferably, the guide member 100 also includes a plurality of reinforcing ribs, which are arranged in a first cavity 143 formed by the first side 110, the second side 120 and the third side 130. The reinforcing ribs include transverse reinforcing ribs 141 and longitudinal reinforcing ribs 142, the transverse reinforcing ribs 141 are used to connect the first side 110 and the second side 120, and the longitudinal reinforcing ribs 142 are used to connect a plurality of transverse reinforcing ribs 141, or are used to connect the third side 130 and the transverse reinforcing ribs 141. Figure 5 or Figure 7 In this specific embodiment, two transverse reinforcing ribs 141 and one longitudinal reinforcing rib 142 are provided. The two transverse reinforcing ribs 141 are provided between the first side 110 and the second side 120 , and a longitudinal reinforcing rib 142 is provided between the transverse reinforcing rib 141 near the third side 130 and the third side 130 for connecting them.

[0043] Please continue reading Figure 1-2 , Figure 5 , Figure 7 The first side 110 and the second side 120 of the guide member 100 at least partially overlap with the floor beam 620, that is, the first side 110 and the second side 120 at least partially cover the side wall of the floor beam 620, and preferably, the third side 130 is flush with the bottom wall of the floor beam 620, so as to further increase the structural stability of the entire guide member 100.

[0044] Please continue reading Figure 7 The guide member 100 is detachably fastened to the floor cross beam 620 by bolts, preferably, the first side 110 is connected to the floor cross beam 620 by two bolts, and the second side 120 is connected to the vehicle floor 610 by one bolt, so as to better realize the connection and fixation of the guide member 100 and the floor cross beam 620. That is, the first side 110 is fixed to the floor cross beam 620 by two bolts, the second side 120 is fixed to the floor cross beam 620 by one bolt, and the connection between the second side 120 and the floor cross beam 620 is set between the two connection points between the first side 110 and the floor cross beam 620.

[0045] Please continue reading Figure 1-2 , Figure 4 , Figure 6A buffer frame 220 is fixedly provided on the battery 210, and the buffer frame 220 is fixedly connected to the floor cross beam 620. The buffer frame 220 is a rectangular frame structure and is relatively fixedly connected to the battery 210. The buffer frame 220 is arranged on both sides of the floor cross beam 620 on which the guide 100 is fixed. On the one hand, the buffer frame is used to prevent other parts from invading the battery 210 in the event of a collision, thereby playing an energy absorption role and minimizing the damage to the battery 210; on the other hand, the buffer frame 220 serves as the installation point between the battery 210 and the floor cross beam 620, so that the buffer frame and the floor cross beam 620 are fixed by bolts to achieve the fixation of the battery 210 and the floor cross beam 620.

[0046] It can be understood that the rectangular frame structure can be a closed frame or an open frame opening toward the bottom of the vehicle (ie, the ground), and the present invention does not limit this. Figure 4 In the open frame, Figure 6 In the example, a closed frame is used.

[0047] Please continue reading Figure 1-2 The battery 210 is fixedly connected at the front end with a front protrusion 230 protruding forward (negative X direction), the front protrusion 230 is directly fixedly connected to the vehicle floor 610, and two floor crossbeams 620 are respectively arranged on both sides of the Y direction of the front protrusion 230, and the front end of the floor crossbeam 620 is flush with the front end of the front protrusion 230 of the battery 210. Preferably, the front protrusion 230 is only fixed on the battery 210, and the front protrusion 230 is not fixedly connected to the floor 610. The front protrusion 230 is a hollow cavity for electrically connecting the battery 210 with external devices. The advantage of such a setting is that, on the one hand, in the existing vehicle structure design, there are no large parts in front of the front protrusion 230. Even if a collision occurs, its intrusion into the battery 210 will be limited. The front protrusion 230 is set here for electrical connection with external devices, which can save wire harnesses and avoid excessive intrusion into the battery 210. At the same time, it can protect the connection between the battery 210 and the external device from intrusion by other parts, ensuring that the connection does not loosen. On the other hand, by setting the front protrusion 230 in the middle, and symmetrically setting the floor beams 620 on both sides, and setting the guide 100 and the buffer frame 220 on the floor beam 620, it is sufficient to ensure that the energy absorption of the battery 210 when the front subframe 500 and the vehicle floor 610 are broken. Such a setting can save materials and reduce costs.

[0048] Please continue reading Figure 1-9, the floor crossbeam 620 is fixedly arranged below the vehicle floor 610. The floor crossbeam 620 includes a base 621, a first part 622, a second part 623 and a third part 624. The base 621 includes a hollow second cavity 6211. The first part 622 and the second part 623 are accommodated in the second cavity 6211 of the base 621 without interfering with each other. The third part 624 is fixedly connected to the base 621. The base 621, the first part 622, the second part 623 and the third part 624 are fixed by spot welding, thereby strengthening the structure of the floor crossbeam 620.

[0049] Specifically, the base 621 is arranged along the inner and outer direction (Y direction) of the vehicle. The base 621 is generally in an inverted "U" - shaped structure. The middle part of the base 621 protrudes downward, so that the middle part of the base 621 and the opposite side walls form a "U" - shaped structure. Flanges are provided on the opposite side walls facing away from the center for fixedly connecting with the vehicle floor 610. The base 621 presents a structure of "narrow inside and wide outside" in the Y - direction, that is, the part close to the center is narrow and the part far from the center is wide.

[0050] The first part 622 is fixedly arranged at the connection corresponding position between the floor crossbeam 620 and the guide member 100 for fixedly connecting with the floor crossbeam 620. A nut 625 is fixedly arranged on the inner wall of the first part 622 for facilitating subsequent bolt fastening with the guide member 100. Preferably, the nut 625 is fixed by welding. During installation, first, the nut 625 is fixed on the first part 622, and then the assembly of the first part 622 and the nut 625 is fixed on the base 621 by welding.

[0051] The second part 623 and the third part 624 are respectively arranged on both sides of the first part 622. The second part 623 is arranged on the side of the first part 622 on the base 621 close to the vehicle center (i.e., the inner side of the vehicle), and the third part 624 is arranged on the side of the first part 622 on the base 621 far from the vehicle center (i.e., the outer side of the vehicle).

[0052] The second part 623 is arranged at the connection corresponding position between the floor crossbeam 620 and the buffer frame 220 of the battery 210. The second part 623 is generally in a "C" - shaped structure. The two opposite sides of the second part 623 are fixedly connected to the two side walls of the base 621 of the floor crossbeam 620. The connecting surface for connecting the two sides of the second part 623 is arranged on the side close to the first part 622, so that the second part 623, the base 621 and other components enclose to form a third cavity 6231. Other components can be, for example, self - welding plates to further increase the connection strength of the entire floor crossbeam 620. In one way, the base 621 and the self - welding plate are first welded to form a box - shaped component. In another way, the second part 623 and other components can also be directly integrally formed. The present utility model does not limit this.

[0053] It can be understood that the benefit of providing the second part 623 is that, because the second part 623 is located at a position of the first part 622 close to the center of the vehicle, since the battery 210 is provided with a front protrusion 230 and a buffer frame 220, the buffer frame 220 serves as the installation point of the entire battery 210. Therefore, the stiffness requirements of the floor beam 620 at this location are relatively high, that is, the local strength is relatively high. By providing the second part 623, it is preferred to configure the second part 623 as a self-welding part, and configure the second part 623 and the base 621 as a box-shaped part, which can greatly increase the connection strength of the entire floor beam 620, thereby reducing damage to the battery 210.

[0054] The third portion 624 is disposed on the base 621 at an end of the first portion 622 away from the center of the vehicle and is fixedly connected to the base 621 . The third portion 624 is used to connect the floor beam 620 and the vehicle floor 610 , thereby strengthening the connection strength between the floor beam 620 and the vehicle floor 610 .

[0055] It can be understood that due to the existence of the guide member 100, in order to ensure that the front subframe 500 can move along the set direction of the guide member 100 when the vehicle collides, it is necessary to ensure the stiffness of the floor crossbeam 620 itself and the connection with the guide member 100, thereby ensuring that the front subframe 500 can move in the guiding direction of the guide member 100 when subjected to a large collision force.

[0056] By providing the base 621, the first part 622, the second part 623 and the third part 624, the structural strength of the floor beam 620 can be well guaranteed, thereby ensuring that this process can be stably implemented, which can ensure that the connection strength of the connection between the guide 100 and the floor beam 620 is increased, and the connection strength of the entire floor beam 620 is increased.

[0057] It should be noted that in the CTB technology, since the vehicle floor 610 and the battery 210 are integrated, the battery 210 plays the function and role of the vehicle floor 610. In addition to being the "battery 210" mentioned above in the present invention, the battery 210 also serves as the "vehicle floor 610". In this case, the battery 210 is directly set under the seat.

[0058] Of course, the utility model also provides a vehicle, including the above-mentioned battery protection assembly, which will not be described in detail.

[0059] The above is a detailed introduction to the scheme of the utility model. Specific examples are used in this article to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. At the same time, for general technicians in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

[0060] References throughout the specification to "one embodiment," "an embodiment," or "a specific embodiment" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment is included in at least one embodiment of the present invention, and not necessarily in all embodiments. Thus, various appearances of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout the specification do not necessarily refer to the same embodiment. In addition, the particular features, structures, or characteristics of any specific embodiment of the present invention may be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments of the present invention described and illustrated herein may be based on the teachings herein and will be considered part of the spirit and scope of the present invention.

[0061] It should also be understood that one or more of the elements shown in the figures may also be implemented in a more separate or more integrated manner, or even removed because they are inoperable in certain circumstances or provided because they may be useful depending on the application.

[0062] In addition, unless otherwise explicitly indicated, any marking arrows in the drawings should be regarded as exemplary only and not limiting. In addition, unless otherwise indicated, the term "or" used herein is generally intended to mean "and / or". In the case where the term is not clear because it is anticipated that the ability to separate or combine is provided, the combination of components or steps will also be regarded as indicated.

Claims

1. A battery protection assembly, fixedly mounted on a vehicle floor, the vehicle floor being used to connect a front sub-frame and a battery, the front sub-frame being arranged at the front end of the battery, characterized in that: It includes a guide member and a floor crossbeam, wherein the floor crossbeam is fixedly arranged below the vehicle floor between the front subframe and the battery; wherein, The guide member is at least partially fixedly disposed below the floor cross member, and the guide member is disposed behind a connection between the front subframe and the vehicle floor; The guide member comprises a first side and a second side that are fixedly connected, the first side is arranged on a side close to the front sub-frame, and the second side is arranged on a side close to the battery; The first side is tilted backwards to selectively guide the front subframe to move in a set direction without contacting the battery.

2. The battery protection assembly according to claim 1, characterized in that: It also includes a third side, which is arranged between the first side and the second side, one end of the third side is fixed to a side of the first side close to the battery, and the other end of the third side is fixed to a side of the second side close to the front subframe.

3. The battery protection assembly according to claim 2, characterized in that: It also includes a transverse reinforcement rib, which is arranged in a first cavity formed by the first side, the second side and the third side, and is used to connect the first side and the second side; Optionally, longitudinal reinforcing ribs are further included, and the longitudinal reinforcing ribs are used to connect the third side and the transverse reinforcing ribs.

4. The battery protection assembly according to claim 2, characterized in that: The first side is fixedly attached to a side wall portion of the floor beam close to the front subframe, the second side is fixedly attached to a side wall portion of the floor beam close to the battery, and the third side is at least partially fixedly attached to a bottom wall of the floor beam.

5. The battery protection assembly according to claim 2, characterized in that: The first side is fixed to the floor cross beam by two bolts, the second side is fixed to the floor cross beam by one bolt, and the connection between the second side and the floor cross beam is arranged between the two connection between the first side and the floor cross beam.

6. A vehicle, characterized in that: It comprises a battery and a battery protection assembly as described in any one of claims 1 to 5, wherein the battery is used to provide power for a vehicle, wherein the floor beam of the battery protection assembly comprises a base and a first portion, wherein the base is fixedly arranged at the bottom of the vehicle floor and connected to the guide member, the first portion is accommodated in a second cavity formed by the base and the vehicle floor, and the first portion is arranged at the connection between the guide member and the base.

7. The vehicle according to claim 6, characterized in that A nut is fixedly provided on the inner wall of the first part at a position corresponding to the connection between the guide and the base, so as to realize the bolt connection among the guide, the base and the first part.

8. The vehicle according to claim 6 or 7, characterized in that The front end of the battery is fixedly connected with a front convex portion protruding forward, and floor beams are arranged on both sides of the left and right sides of the front convex portion. The front end of the floor beam is flush with the front end of the front convex portion, and the front convex portion is used to electrically connect the battery to an external device; wherein, The floor beam further includes a second portion, the second portion is accommodated in the second cavity and fixedly connected to the base, and the second portion is arranged on a side of the base close to the front protrusion; Optionally, the floor cross beam further comprises a third portion, which is disposed on a side of the base away from the front protrusion and is used to fix the base and the vehicle floor.

9. The vehicle according to claim 8, characterized in that The battery further comprises a buffer frame for fixedly connecting to the base of the floor beam, wherein a plurality of buffer frames are fixedly arranged on the left and right sides of the connection between the base and the guide member; The buffer frame is a closed rectangular frame, or an open rectangular frame opening toward the ground; Optionally, the base is a structure that is narrow in the middle and wide on left and right sides.

10. The vehicle according to claim 9, characterized in that The second part is a structure having a third cavity, and the opening of the third cavity is arranged to face away from the ground; Optionally, the second part is arranged at a position corresponding to the connection between the buffer frame on the side closest to the front protrusion and the base, and a nut is fixed on the inner wall of the second part at a position corresponding to the connection between the buffer frame on the side closest to the front protrusion and the base, for realizing a bolt connection between the front protrusion, the base and the second part.

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