CN219717082U - Battery device - Google Patents

Abstract

The utility model relates to the technical field of batteries, and discloses a battery device, which comprises: the electric bin is formed by enclosing a box outer frame and an inner beam, and the box outer frame is provided with a front panel which is arranged opposite to the inner beam; the electric component is arranged in the electric bin; the conductive bar is arranged in the electric bin and is positioned at one side of the electric piece facing the front panel; the projection of the electrical component and the projection of the conductive bar at least partially overlap along the direction perpendicular to the front panel; the buffer plate is arranged between the conducting bar and the electric component and at least arranged in a projection overlapping area of the electric component and the conducting bar. According to the battery device provided by the utility model, the buffer plate is arranged between the conductive bars and the electric parts, so that the extrusion of the conductive bars to the electric parts can be reduced, the short circuit caused by collision deformation of two charged bodies is avoided, and the safety and reliability of the battery device are improved. Under the premise of tight space of the electric bin, the safety of the battery device in the X-direction extrusion or collision working condition can be greatly improved.

Description

Battery device

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery device.

Background

With the continuous development of new energy battery technology, the energy density of the battery pack is higher and higher, the space of an electric appliance bin for accommodating electric elements is continuously compressed, and only small gaps are reserved among the electric elements.

Under the condition of extrusion or collision, the battery pack bears larger extrusion force, the front panel of the box body is easy to deform, and the aviation plug-in unit installed on the front panel and the high-voltage conductive bars connected with the aviation plug-in unit can extrude to a rear BMS (battery management system) and slowly invade the BMS. Because the existence of the metal fastener for fixing the aviation plug or the high-voltage conductive bar can cause the damage of the outer protective layer of the high-voltage conductive bar, and under certain conditions, the short circuit can be caused inside the high-voltage conductive bar and the BMS, so that great hidden danger exists for the whole vehicle safety.

Disclosure of Invention

In view of this, the present utility model provides a battery device to solve the problems that a battery case is easily broken and short-circuited in the case of a crush collision.

In a first aspect, the present utility model provides a battery device comprising:

the electric bin is formed by enclosing a box outer frame and an inner beam, and the box outer frame is provided with a front panel which is arranged opposite to the inner beam;

the electric piece is arranged in the electric bin;

the conducting bar is arranged in the electric bin and is positioned at one side of the electric piece facing the front panel;

the projection of the electrical component at least partially overlaps the projection of the conductive row along a direction perpendicular to the front panel;

the buffer plate is arranged between the conducting bar and the electric component and at least arranged in a projection overlapping area of the electric component and the conducting bar.

According to the battery device provided by the utility model, the buffer plate is arranged between the conducting bar and the electric component, so that the extrusion of the conducting bar to the electric component can be reduced, the short circuit caused by collision deformation of two charged bodies is avoided, and the safety and reliability of the battery device are improved. Under the premise of tight space of the electric bin, the safety of the battery device in the X-direction extrusion or collision working condition can be greatly improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a battery device of the present utility model;

FIG. 2 is a schematic view showing the installation state of the electric component, the buffer plate and the bracket according to the present utility model;

FIG. 3 is a schematic view showing an exploded state of the electric component, the buffer plate and the bracket according to the present utility model;

fig. 4 is a top view of the battery device of the present utility model.

Reference numerals illustrate:

the electric component mounting device comprises a front panel 1, an inner beam 2, a supporting part 21, an electric component 3, an electric component 31, an electric component mounting part 4, a bracket 41, an electric component fixing hole 42, a buffer plate mounting part 43, a bracket fixing lug 5, a buffer plate 51, an electric component avoiding hole 52, a buffer plate mounting hole 52 and a yielding cavity 6.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

The battery pack is generally provided with a battery pack formed by stacking a plurality of batteries and electric elements connected with the battery pack for realizing circuit conduction and control, wherein the electric elements are generally arranged in an electric bin, and the front panel, the two side plates and the cross beam close to the front panel of the box body form the electric bin. In a limited electrical warehouse space, high-voltage electrical components such as aviation plug-ins, MSDs (manual maintenance switches), high-voltage conductor bars, BMSs (battery management systems) and the like need to be arranged, and only small gaps are reserved among the electrical components. The BMS is typically mounted on a side adjacent to the inner rail, and the flight module is typically mounted on a side adjacent to the front panel, with the flight module at least partially overlapping the BMS along the length (i.e., X-direction) of the battery pack. High-voltage conducting bars are connected between the aviation plug and the battery pack, and the high-voltage conducting bars are at least partially overlapped with the BMS along the length direction of the battery pack.

Under the condition that the battery pack is extruded or collided, especially X-direction extrusion or collision is carried out, the battery pack bears great X-direction extrusion force, deformation of a front panel of the box body is easy to cause, a navigation plug-in unit installed on the front panel and a high-voltage conducting bar connected with the navigation plug-in unit can extrude a rear BMS, and due to the existence of a metal fastener for fixing the navigation plug-in unit or the high-voltage conducting bar, damage to an outer protective layer of the high-voltage conducting bar can be caused, short circuit can be caused inside the high-voltage conducting bar and the BMS under certain conditions, and huge hidden danger exists for the whole vehicle safety.

The battery device provided by the embodiment of the utility model can enhance the protection of the BMS, ensure the extrusion or collision of the battery pack, still ensure the integrity of the BMS and avoid the short circuit between the high-voltage conductive bars and the inside of the BMS. Embodiments of the present utility model are described below with reference to fig. 1 to 4.

According to an embodiment of the present utility model, in one aspect, there is provided a battery device including:

the electric bin is formed by enclosing a box outer frame and an inner beam 2, and the box outer frame is provided with a front panel 1 which is arranged opposite to the inner beam 2;

an electrical component 3 disposed in the electrical bin;

the electric conduction bar is arranged in the electric bin and is positioned at one side of the electric piece 3 facing the front panel 1;

the projection of the electrical component 3 at least partially overlaps the projection of the conductive row in a direction perpendicular to the front panel 1;

and a buffer plate 5 arranged between the conductive bar and the electric component 3 and at least arranged in a projection overlapping area of the electric component 3 and the conductive bar.

Alternatively, the battery device provided by the embodiment of the utility model may be a battery pack or a part of a battery pack.

Optionally, the battery device includes a battery box and a battery disposed in the battery box. The battery box may be divided into an electrical compartment and a battery compartment, wherein one of the side walls of the electrical compartment may be the front panel 1 of the box. When the battery device is applied to an electric automobile, the front panel 1 is arranged at the front end along the length direction of the electric automobile, and when the electric automobile is extruded or collided in the X direction, the front panel 1 of the battery device is deformed at first.

Alternatively, the conductive strip may be a conductive strip having a longer length, for example, the conductive strip may extend along the length direction of the front panel 1 and be disposed in the electrical bin. One end of the conducting bar is suitable for being electrically connected with the anode or the cathode of the battery, and the other end of the conducting bar is suitable for being connected with the aviation plug so as to realize the communication between an external circuit and the battery.

The projection of the electrical component 3 at least partially overlaps the projection of the conductive bar in the direction perpendicular to the front panel 1, so that the electrical component 3 is easily crushed by the conductive bar to be broken when being impacted in the direction perpendicular to the front panel 1. By providing the buffer plate 5 in the projection overlapping area of the electric component 3 and the conductive bar, the extrusion acting force of the conductive bar to the electric component 3 can be reduced, and the electric component 3 can be better protected.

Since the electric component 3 is at least partially overlapped with the conductive bars in the direction perpendicular to the front panel 1, the electric component 3 is easily crushed by the conductive bars to be broken when being crushed or collided with in the X direction. According to the battery device provided by the embodiment of the utility model, the buffer plate 5 is arranged between the conducting bar and the electric component 3, so that the extrusion of the conducting bar to the electric component 3 can be reduced, the short circuit caused by collision deformation of two charged bodies is avoided, and the safety and reliability of the battery device are improved. Under the premise of tight space of the electric bin, the safety of the battery device in the X-direction extrusion or collision working condition can be greatly improved.

In some embodiments, the electrical component 3 comprises a BMS. The BMS may have a box-like or sheet-like shape, and the number of the BMSs is at least one.

In some embodiments, as shown in connection with fig. 2 and 3, the battery device further includes:

the support 4 is arranged between the conducting bars and the electric components 3, the buffer plate 5 is installed on one side, close to the conducting bars, of the support 4, and the electric components 3 are installed on one side, far away from the conducting bars, of the support 4.

Alternatively, the support 4 may be made of a high-strength plastic material or a metal material, and when the support 4 is made of a metal material, it may be specifically made of aluminum or an aluminum alloy or stainless steel. And when the bracket 4 is made of metal, it may be formed by means of stamping, injection molding, or the like.

Optionally, the bracket 4 is provided with a lightening hole.

Optionally, a plurality of reinforcing ribs are provided on the support 4 to improve the bending strength of the support 4.

By arranging the bracket 4 between the conductive bar and the electric component 3, on one hand, the bracket 4 can play a role in supporting and fixing the electric component 3 and the buffer plate 5, on the other hand, the bracket 4 can play a role in protecting the electric component 3, and when the conductive bar is extruded or collided in the X direction, the extrusion of the conductive bar to the electric component 3 can be reduced.

Alternatively, the main body of the bracket 4 is configured in a plate shape, the buffer plate 5 is parallel to the bracket 4 and mounted on a side of the bracket 4 near the conductive bar, and the electrical component 3 is parallel to the bracket 4 and mounted on a side of the bracket 4 away from the conductive bar. The buffer plate 5 and the electric component 3 are respectively positioned on two sides of the bracket 4, the bracket 4 can be reasonably utilized, and the buffer plate 5 and the electric component 3 are fixed.

In some embodiments, as shown in connection with fig. 1 and 2, the battery device further includes:

an inner beam 2 spaced apart from the front panel 1 and forming the other side wall of the electrical compartment;

the bracket 4 is mounted on the inner beam 2, and the electrical component 3 is disposed between the bracket 4 and the inner beam 2.

The inner beam 2 can be a movable beam which is detachably connected with the box body. The inner beam 2 forms the other side wall of the electrical compartment and the area between the front panel 1 and the inner beam 2 defines the width of the electrical compartment.

The support 4 is installed on the inner beam 2, and is shown in fig. 3, a plurality of supporting parts 21 are arranged on the inner beam 2, a plurality of support fixing lugs 43 are arranged on the support 4 corresponding to the supporting parts 21, and optionally, the support fixing lugs 43 are formed by turning over the body of the support 4 towards one side of the inner beam 2. Optionally, the bracket fixing lugs 43 are disposed around the body of the bracket 4.

Alternatively, the bracket fixing lugs 43 are fixed to the supporting portion 21 by bolts.

Further, by disposing the electric component 3 between the bracket 4 and the inner beam 2. The bracket 4 and the inner beam 2 can form two-sided coating on the electric component 3, so that the electric component 3 can be better protected.

Additionally, a buffer cushion is arranged between the electric component 3 and the bracket 4.

The electric component 3 is fixedly connected with the bracket 4, the electric component 3 is properly attached to the inner beam 2, or a certain gap can be reserved between the electric component 3 and the inner beam 2. As a variant, a cushion is also provided between the electrical component 3 and the inner beam 2.

In some embodiments, the battery device further comprises:

the aviation plug and the electric connector (not shown) thereof are fixed in the electric bin through a first fixing piece;

the electric part 3 is fixedly connected with the bracket 4 through a second fixing part;

the first fixing member and the second fixing member are projected non-overlapping in a direction perpendicular to the front panel 1.

Optionally, a yielding cavity 6 is formed between the front panel 1 and the buffer plate 5, and the yielding cavity 6 is suitable for accommodating the aviation plug and the electrical connector thereof.

Optionally, the avionics component is suitable for being connected with an external circuit in a plugging manner, and the electrical connector of the avionics component can be a copper bar, and the copper bar is used for electrically connecting the conductive bar with the avionics component.

Optionally, the avionics component is fixed on the front panel 1 by a first fixing piece, and the electrical connection piece of the avionics component is fixed on the front panel 1 by the first fixing piece or directly fixedly connected with the avionics component.

Alternatively, the first fixing member may be a bolt or a pin or a rivet.

Referring to fig. 3, the electrical component 3 is provided with a plurality of electrical component mounting portions 31, the electrical component mounting portions 31 are provided with mounting holes, the bracket 4 is provided with electrical component fixing holes 41 corresponding to the mounting holes, and the second fixing member is formed by sequentially penetrating the electrical component fixing holes 41 and the mounting holes from the front panel 1 toward the inner beam 2, so as to fixedly connect the electrical component 3 with the bracket 4.

Alternatively, the second fixing member may be a bolt or a pin or a rivet. Taking the second fixing member as an example of a bolt, the assembly hole formed in the electrical component mounting portion 31 may be a threaded hole.

Because the second fixing member is installed from the front panel 1 toward the inner beam 2, the buffer plate 5 is provided with an electric member avoiding hole 51 corresponding to the electric member fixing hole 41, so as to facilitate penetration of the second fixing member.

According to the battery device provided by the embodiment of the utility model, the projections of the first fixing piece and the second fixing piece are not overlapped along the direction vertical to the front panel 1, so that the first fixing piece and the second fixing piece can avoid each other in the X direction when X-direction extrusion or collision occurs, and short circuit caused by direct lap joint of bolts under the working condition of X-direction extrusion collision is avoided.

Alternatively, the electrical component relief hole 51 may be a counter bore structure to fully receive the bolt head. Through adopting counter bore structure to rationally select bolt length, can avoid the head of bolt to stretch out along X direction buffer board 5 all the time, thereby effectively avoided the contact of bolt and busbar, avoid the damage of the outer inoxidizing coating of bolt puncture high-voltage copper bar and cause the risk of insulation failure.

In some embodiments, the buffer plate 5 is fixedly connected to the bracket 4 via a third fixing member;

the first fixing member and the third fixing member are projected non-overlapping in a direction perpendicular to the front panel 1.

Referring to fig. 3, the bracket 4 is provided with a buffer plate mounting portion 42, and the buffer plate 5 is provided with a buffer plate mounting hole 52 corresponding to the buffer plate mounting portion 42, and the buffer plate 5 is fixedly connected with the bracket 4 by a third fixing member.

Alternatively, the third fixing member may be a bolt or a pin or a rivet.

Alternatively, the buffer plate mounting holes 52 may be counter bored to fully receive the bolt heads. Through adopting counter bore structure to rationally select bolt length, can avoid the head of bolt to stretch out along X direction buffer board 5 all the time, thereby effectively avoided the contact of bolt and busbar, avoid the damage of the outer inoxidizing coating of bolt puncture high-voltage copper bar and cause the risk of insulation failure.

Alternatively, the buffer plate mounting portion 42 may be a blind rivet stud.

In some embodiments, as shown in connection with fig. 2, the length of the buffer plate 5 is not shorter than the length of the electrical component 3 in a direction parallel to the length of the electrical component 3.

According to the battery device provided by the embodiment of the utility model, the length of the buffer plate 5 is not shorter than the length of the electric component 3 along the direction parallel to the length of the electric component 3, so that the buffer plate 5 can better protect the electric component 3 and avoid short circuit caused by deformation in any length direction.

In some embodiments, as shown in connection with fig. 2, the upper surface of the buffer plate 5 is lower than the upper end surface of the electrical component 3 in the height direction of the electrical component 3.

According to the battery device provided by the embodiment of the utility model, the upper surface of the buffer plate 5 is lower than the upper end surface of the electric component 3 along the height direction of the electric component 3, so that a plugging space can be reserved for the electric component 3, and the installation of a plug connector is facilitated.

In some embodiments, the thickness of the buffer plate 5 is D, wherein D has a value ranging from 6 mm.ltoreq.D.ltoreq.10 mm.

As an alternative embodiment, the thickness D of the buffer plate 5 may have a value of 6mm or 7mm or 8mm or 9mm or 10mm.

By limiting the upper limit of the thickness of the buffer plate 5, the buffer plate 5 can be prevented from occupying the space of the electric bin too much, and the space utilization rate is prevented from being reduced; by limiting the lower limit of the thickness of the buffer plate 5, it is possible to prevent the buffer plate 5 from becoming too thin to protect the electrical components 3.

In some embodiments, the buffer plate 5 is made of an insulating material, has an internal insulation resistance of not less than 500mΩ, and has an elongation at break of 50% or more.

Optionally, the buffer plate 5 may be formed by using nylon with high elongation at break, so as to ensure toughness and high impact resistance of the buffer plate 5. And when receiving X extrusion or collision, along with X extrusion force's continuation increase, buffer board 5 can be along with the avionics component deformation together, because of the high elongation at break characteristic of itself, can block the installation bolt invasion BMS of avionics component and copper bar all the time, avoids the inside short circuit that takes place of BMS.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Although the embodiments of the present utility model have been described with reference to the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the utility model, and such modifications and variations fall within the scope of the utility model as defined by the claims.

Claims (10)

1. A battery device, characterized by comprising:

the electric bin is formed by enclosing a box outer frame and an inner beam (2), and the box outer frame is provided with a front panel (1) which is arranged opposite to the inner beam (2);

an electrical component (3) arranged in the electrical bin;

the electric conduction bar is arranged in the electric bin and is positioned at one side of the electric component (3) facing the front panel (1);

along a direction perpendicular to the front panel (1), the projection of the electrical component (3) at least partially overlaps the projection of the conductive strip;

and the buffer plate (5) is arranged between the conducting bar and the electric component (3) and at least arranged in a projection superposition area of the electric component (3) and the conducting bar.

2. The battery device according to claim 1, characterized in that the electrical component (3) comprises a BMS.

3. The battery device according to claim 1, characterized in that the battery device further comprises:

the support (4) is arranged between the conducting bars and the electric parts (3), the buffer plate (5) is arranged on one side, close to the conducting bars, of the support (4), and the electric parts (3) are arranged on one side, far away from the conducting bars, of the support (4).

4. The battery device according to claim 3, wherein,

the support (4) is mounted on the inner beam (2), and the electrical component (3) is arranged between the support (4) and the inner beam (2).

5. The battery device of claim 3, wherein the battery device further comprises:

the aviation plug-in unit and the electric connecting piece thereof are fixed in the electric bin through a first fixing piece;

the electrical component (3) is fixedly connected with the bracket (4) through a second fixing piece;

the first fixing piece and the second fixing piece are projected to be non-overlapped along the direction perpendicular to the front panel (1).

6. The battery device according to claim 5, characterized in that the buffer plate (5) is fixedly connected with the bracket (4) via a third fixing member;

the first fixing piece and the third fixing piece are projected to be non-overlapped along the direction perpendicular to the front panel (1).

7. The battery device according to any one of claims 1 to 6, wherein the length of the buffer plate (5) is not shorter than the length of the electric component (3) in a direction parallel to the length of the electric component (3).

8. The battery device according to any one of claims 1 to 6, wherein an upper surface of the buffer plate (5) is lower than an upper end surface of the electric component (3) in a height direction of the electric component (3).

9. The battery device according to any one of claims 1 to 6, wherein the thickness of the buffer plate (5) is D, wherein D has a value ranging from 6mm to 10mm.

10. The battery device according to any one of claims 1 to 6, wherein the buffer plate (5) is an insulating material, has an internal resistance of not less than 500mΩ, and has an elongation at break of 50% or more.