CN218586201U

CN218586201U - Battery box capable of resisting collision and power battery system

Info

Publication number: CN218586201U
Application number: CN202222690972.0U
Authority: CN
Inventors: 王兴亮; 李德连; 胡东升; 周鹏
Original assignee: Sinoev Hefei Technologies Co Ltd
Current assignee: Sinoev Hefei Technologies Co Ltd
Priority date: 2022-10-12
Filing date: 2022-10-12
Publication date: 2023-03-07
Anticipated expiration: 2032-10-12

Abstract

A battery box capable of resisting collision and a power battery system relate to the technical field of batteries and comprise a battery box body, wherein the battery box body comprises a ring beam, a reinforcing plate, a reinforcing rib and a reinforcing beam; the reinforcing plate is arranged inside the ring beam perpendicular to the collision direction, and divides the inside of the ring beam into a buffer area and a battery area; at least one reinforcing rib for resisting collision pressure is arranged inside the buffer zone and is connected with a collision edge of the reinforcing plate and the ring beam along a collision direction; at least one reinforcement beam for decomposing collision pressure is provided on the inner bottom surface of the battery region and connects the reinforcement plate and the side edge of the ring beam parallel to the collision direction. The battery box can increase the density and rigidity of the box body in a limited space, does not influence the arrangement space of the single battery core, and does not change the energy density of the battery in the battery box. A power battery system adopting the battery box has excellent mechanical property.

Description

Battery box capable of resisting collision and power battery system

Technical Field

The utility model relates to a battery technology field particularly, relates to a can resist battery box and power battery system of collision.

Background

The energy density of the current automobile power battery system is required to be higher and higher, and the power battery system is required to arrange more single batteries in a limited space as much as possible so as to obtain the best power performance and economic benefit. The premise of improving the energy density of the power battery system is to ensure the reliability of the power battery system, the improvement of the strength and rigidity of a battery box body of the power battery system is a simple and direct method, and the increase of the strength and rigidity of the box body in a limited space inevitably loses part of the internal space of the power battery system to reduce the energy density of the system. For example, transverse and longitudinal reinforcing beams are added inside the battery box body.

The inventor researches and discovers that in the conventional power battery system, in order to ensure the reliability of the system, an internal reinforcing beam is arranged in a battery box body, so that the space for arranging single battery cells is correspondingly reduced, and the energy density of the system is lost.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can resist battery box and power battery system of collision, its density and the rigidity that can increase the box in limited space to do not influence the space of arranging of monomer electricity core, do not change the energy density of the inside battery of battery box.

The embodiment of the utility model is realized like this:

in a first aspect, the utility model provides a can resist battery box of collision, including the battery box:

the battery box body comprises a ring beam, a reinforcing plate, a reinforcing rib and a reinforcing beam;

the reinforcing plate is arranged inside the ring beam perpendicular to the collision direction, and divides the inside of the ring beam into a buffer area and a battery area;

the at least one reinforcing rib is arranged in the buffer area and is connected with the collision edge of the reinforcing plate and the ring beam along the collision direction;

at least one reinforcing beam is arranged on the inner bottom surface of the battery area and is connected with the reinforcing plate and the side edge of the ring beam parallel to the collision direction.

In an optional embodiment, the ring beam is parallel to the collision direction, and the inner walls of the two sides of the ring beam are provided with raised lines, the two ends of the reinforcing plate are provided with grooves, and the grooves are matched with the raised lines.

In an alternative embodiment, the reinforcing ribs are arranged in the buffer zone at equal intervals and have 2-4 reinforcing ribs in total.

In an alternative embodiment, the number of the reinforcement beams is even, and the even number of the reinforcement beams is symmetrically arranged on the inner bottom surface of the battery region relative to the collision direction.

In an alternative embodiment, the battery pack further comprises a module pallet for receiving a battery pack, the module pallet being disposed within the battery zone.

In an alternative embodiment, the bottom of the ring beam is provided with a bottom apron.

In an alternative embodiment, the collar beam and the bottom apron are screwed together.

In an alternative embodiment, the bottom of the ring beam is provided with a bolt, the bottom guard plate is provided with a threaded hole, and the bolt is matched and connected with the threaded hole.

In an alternative embodiment, a sealing ring is arranged at the joint of the bottom guard plate and the ring beam.

In a second aspect, the present invention provides a power battery system, comprising a crash-resistant battery box according to any of the preceding embodiments.

The embodiment of the utility model provides a beneficial effect is:

1. the utility model discloses adopt circle reinforcing plate, strengthening rib and stiffening beam in the inside of circle roof beam, the reinforcing plate is inside to be divided into battery compartment and buffers with the circle roof beam, and consequently the reinforcing plate is the limit in battery compartment, and the stiffening beam setting is in the bottom in battery compartment, and overall structure is when not influencing the inner space of battery, the energy density of the increase battery of bigger possible for the battery obtains best dynamic property and economic benefits.

2. The utility model discloses can provide effective intensity and rigidity when whole car head-on collision and power battery system receive the extrusion of collision direction, transmit impact or extrusion force to the box internal anterior middle strengthening rib by the anterior ring roof beam of box, the anterior middle strengthening rib dispersion transmission is located a plurality of stiffening beams of box module layer board bottom from this again, the ring roof beam of box both sides is transmitted to the stiffening beam from this again, in order to correspond the impact that collision and extrusion brought in the twinkling of an eye, bring appropriate intensity and rigidity for the box, and form the routed space that contracts of power battery system, in order to protect the monomer battery who is located the box to receive impact in the twinkling of an eye, avoid arousing explosion firing safety risk.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on these drawings without inventive efforts.

Fig. 1 is a schematic view of a battery box according to an embodiment of the present invention;

fig. 2 is a schematic view of a ring beam and each part provided by the embodiment of the present invention;

fig. 3 is a schematic view of a reinforcing plate according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a second embodiment according to an embodiment of the present invention.

An icon:

100-a battery case; 110-ring beam; 111-ribs; 120-a reinforcement plate; 121-grooves; 130-reinforcing ribs; 140-a stiffening beam; 150-a module pallet; 160-bottom apron; 170-a buffer; 180-battery zone; 190-buffer spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when used, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element indicated must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are absolutely horizontal or hanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

The power battery system of the car is the power source of the electric car, or one of the power sources, generally comprise four parts such as power battery module, battery management system, power battery box and auxiliary components and parts, for the battery box, present battery box requires that more battery cells are arranged in limited space as far as possible inside in order to obtain best power performance and economic benefits, that is to say, energy density requires highly, in addition, under the condition of guaranteeing energy density, still need to guarantee the reliability of battery box as far as possible, in the prior art, the simplest method is to increase horizontal and longitudinal stiffening beam 140 inside, but such structure will certainly cause the influence to the energy density of battery box inside, therefore the utility model aims to provide a can guarantee the energy density of battery box, can also strengthen the reliable performance of box simultaneously.

First embodiment

Referring to fig. 1-2, the present embodiment provides a battery box capable of resisting collision, which includes a battery box body 100: the battery box 100 comprises a ring beam 110, a reinforcing plate 120, a reinforcing rib 130 and a reinforcing beam 140; the reinforcing plate 120 is disposed inside the ring beam 110 perpendicular to the collision direction, and the reinforcing plate 120 divides the inside of the ring beam 110 into a buffer area 170 and a battery area 180; at least one reinforcing bead 130 is disposed inside the buffering zone 170 and connects the collision edge of the reinforcement plate 120 and the ring beam 110 in the collision direction; at least one reinforcing beam 140 is disposed on the inner bottom surface of the battery region 180 and connects the reinforcing plate 120 and the ring beam 110 at a side parallel to the collision direction.

It can be understood that the reinforcing ribs 130 are mainly used for resisting collision pressure, the reinforcing beams 140 are mainly used for decomposing collision pressure, the reinforcing plate 120 divides the interior of the ring beam 110 into the battery area 180 and the buffer area 170, the battery area 180 is used for storing battery packs, the buffer area 170 is used for buffering collision pressure from the outside, meanwhile, the area of the battery area 180 is far larger than that of the buffer area 170, and the reinforcing beams 140 are arranged at the bottom of the battery area 180, so that the overall structure does not affect the energy density of the batteries in the battery box 100, and further, the batteries obtain the best power performance and economic benefit. On the other hand, the reinforcing plate 120, the reinforcing ribs 130 and the reinforcing beams 140 can provide effective strength and rigidity when the whole vehicle is in frontal collision and the power battery system is extruded in the collision direction, collision force or extrusion force is transmitted to the middle reinforcing rib 130 at the front part in the box body from the ring beam 110 at the front part of the box body, then the middle reinforcing rib 130 at the front part is dispersedly transmitted to the plurality of reinforcing beams 140 at the bottom of the box body module supporting plate 150, and then the reinforcing beams 140 are transmitted to the ring beams 110 at two sides of the box body to deal with impact caused by instant collision and extrusion, so that proper strength and rigidity are brought to the box body, and a crumple space of the power battery system is formed, so that the single batteries in the box body are protected from instant impact, and the explosion and fire safety risks are avoided.

Specifically, as shown in fig. 2 to 3, the inner walls of the ring beam 110 parallel to the collision direction in this embodiment are provided with convex strips 111, and the two ends of the reinforcing plate 120 are provided with grooves 121, so that the grooves 121 and the convex strips 111 are connected in a matching manner, so that the reinforcing plate 120 is connected to two opposite sides of the ring beam 110.

Optionally, 2 to 4 reinforcing ribs 130 are provided in the buffer area 170 at equal intervals, and it can be understood that 2 reinforcing ribs 130 are adopted in the present embodiment to resist a certain degree of collision pressure, and the reinforcing ribs 130 may be additionally or decreasingly provided according to the actual conditions of the vehicle and the use.

Alternatively, the number of the reinforcement beams 140 is even, and the even number of reinforcement beams 140 are symmetrically disposed on the inner bottom surface of the battery region 180 with respect to the collision direction. It is understood that the reinforcing beams 140 in the present embodiment are provided with 4, the 4 reinforcing beams 140 are divided into two groups which are bilaterally symmetrical, the first group connects the reinforcing plate 120 and the left side edge of the ring beam 110, the second group connects the reinforcing plate 120 and the right side edge of the ring beam 110, and the two reinforcing beams 140 of each group are arranged in parallel.

Specifically, the utility model provides a pair of can resist battery box of collision still includes module layer board 150 and bottom backplate 160, and module layer board 150 sets up in the bottom of battery district 180 for accept the battery package, and play certain effect to the heat dissipation of battery package, and bottom backplate 160 sets up in the bottom of collar tie beam 110, is used for carrying out the closing cap to battery box 100, and is provided with the sealing washer in the junction of bottom backplate 160 and collar tie beam 110 and seals.

Optionally, the ring beam is in threaded connection with the bottom guard plate, a threaded hole is formed in the bottom guard plate 160, and a bolt is arranged at the bottom of the ring beam 110, so that the threaded hole and the bolt are in fit connection to fix the bottom guard plate 160 at the bottom of the ring beam 110.

Second embodiment

As shown in fig. 4, the present embodiment is different from the first embodiment in that the connection ribs in the first embodiment are replaced with buffer springs 190, the buffer springs 190 are provided with two buffer springs 190 and are disposed in the buffer area 170, one end of the buffer spring 190 is connected to the reinforcing plate 120, and the other end of the buffer spring 190 is connected to the collision edge of the ring beam 110, and since the buffer springs 190 have good buffer performance, the pressure on the ring beam 110 caused by collision can be released by the buffer springs 190, and compared with the connection ribs, brittle fracture will not occur, and for the pressure not exceeding the load, the problem that the collision edge of the ring beam 110 is seriously deformed will not occur.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery box capable of resisting collision is characterized by comprising a battery box body:

2. The battery box capable of resisting collision according to claim 1, wherein the inner walls of the ring beam on both sides parallel to the collision direction are provided with convex strips, the two ends of the reinforcing plate are provided with grooves, and the grooves are matched with the convex strips.

3. The battery box according to claim 1, wherein the number of the reinforcing ribs is 2-4 and the reinforcing ribs are equidistantly arranged in the buffer zone.

4. The crash-resistant battery box as set forth in claim 1, wherein said reinforcing beams are provided in an even number, and said even number are provided on the inner bottom surface of said battery region symmetrically with respect to the crash direction.

5. The crash-resistant battery box of claim 1, further comprising a module pallet for receiving a battery pack, said module pallet being disposed within said battery compartment.

6. The battery box capable of resisting collision according to claim 1, wherein the bottom of the ring beam is provided with a bottom guard plate.

7. The crash-resistant battery box as recited in claim 6, wherein said ring beam and said bottom guard are screw-coupled.

8. The battery box capable of resisting collision according to claim 7, characterized in that the bottom of the ring beam is provided with a bolt, the bottom guard plate is provided with a threaded hole, and the bolt is matched and connected with the threaded hole.

9. The battery box capable of resisting collision according to claim 6, wherein the joint of the bottom guard plate and the ring beam is provided with a sealing ring.

10. A power battery system, characterized in that it comprises a crash-resistant battery box according to any one of claims 1 to 9.