CN218548672U - Battery pack - Google Patents

Abstract

The utility model relates to a battery technology field provides a battery pack, include: the battery box body comprises a bottom plate and a frame, and the frame is arranged on the bottom plate to form an accommodating space; the battery assembly is arranged in the accommodating space and comprises a plurality of single batteries; a spacer positioned between the battery pack and the frame, the spacer being coupled to at least one of the base plate and the frame, a mounting space being formed at a side of the spacer facing the frame; and the high-voltage line is electrically connected with the battery component and arranged in the installation space. Through setting up the separator between battery pack and frame, and the separator is formed with installation space towards one side of frame, and the high-tension line who is connected with the battery pack electricity sets up in installation space to can make the separator realize the isolation to battery pack and high-tension line, with this influence that reduces high-tension line to battery pack, thereby improve the safety in use performance of battery package.

Description

Battery pack

Technical Field

The utility model relates to a battery technology field especially relates to a battery package.

Background

In the related art, in order to meet the requirement of space saving, a high voltage line of a battery pack is often arranged adjacent to a battery, that is, the distance between the high voltage line and the battery is short, and after long-time use, a safety problem is easily caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery pack to improve the performance of battery pack.

The utility model provides a battery pack, include:

the battery box body comprises a bottom plate and a frame, and the frame is arranged on the bottom plate to form an accommodating space;

the battery assembly is arranged in the accommodating space and comprises a plurality of single batteries;

a spacer positioned between the battery pack and the frame, the spacer being coupled to at least one of the base plate and the frame, a mounting space being formed at a side of the spacer facing the frame;

and the high-voltage line is electrically connected with the battery component and arranged in the installation space.

The utility model discloses the battery package includes the battery box, battery pack, isolator and high voltage transmission lines set up in the battery box, through setting up the isolator between battery pack and frame, and the isolator is formed with installation space towards one side of frame, and the high voltage transmission lines who is connected with the battery pack electricity sets up in installation space, thereby can make the isolator realize the isolation to battery pack and high voltage transmission lines, with this influence that reduces high voltage transmission lines to battery pack, thereby the safety in use performance of battery package has been improved.

Drawings

For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted so as to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may be arranged differently as is known in the art. Further, in the drawings, like reference characters designate the same or similar parts throughout the several views.

Wherein:

fig. 1 is a schematic diagram illustrating a perspective structure of a battery pack according to an exemplary embodiment;

fig. 2 is a schematic diagram illustrating another perspective of a battery pack according to an exemplary embodiment;

fig. 3 is a schematic view illustrating an internal partial structure of a battery pack according to an exemplary embodiment;

FIG. 4 is a schematic diagram illustrating the construction of a spacer and bezel in accordance with an exemplary embodiment;

fig. 5 is a schematic view showing an internal partial structure of a battery pack according to another exemplary embodiment;

FIG. 6 is a schematic diagram illustrating the construction of a spacer and bezel in accordance with another exemplary embodiment;

fig. 7 is a schematic structural view illustrating a spacer, a bezel, and a protective cover according to another exemplary embodiment.

The reference numerals are explained below:

10. a battery case; 11. a base plate; 12. a frame; 121. a pressure relief structure; 13. an accommodating space; 20. a battery assembly; 21. a single battery; 211. an explosion-proof valve; 30. a spacer; 31. an installation space; 32. avoiding the channel; 33. buckling; 34. a protective cover; 40. a high voltage line; 41. high-voltage copper bars; 50. a first high voltage connector; 51. a second high voltage connector.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, so it should be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.

In the description of the present disclosure, unless otherwise explicitly specified or limited, the terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, reference to "the" object or "an" object is also intended to mean one of many such objects possible.

The terms "connected," "secured," and the like are to be construed broadly and unless otherwise stated or indicated, and for example, "connected" may be a fixed connection, a removable connection, an integral connection, an electrical connection, or a signal connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood as a specific case by a person skilled in the art.

Further, in the description of the present disclosure, it should be understood that the directional words "upper", "lower", "inner", "outer", etc., which are described in the exemplary embodiments of the present disclosure, are described at the angles shown in the drawings, and should not be construed as limiting the exemplary embodiments of the present disclosure. It will also be understood that, in this context, when an element or feature is referred to as being "on", "under", or "inner", "outer" with respect to another element(s), it can be directly on "," under ", or" inner "," outer "with respect to the other element(s), or indirectly on", "under", or "inner", "outer" with respect to the other element(s) via intervening elements.

An embodiment of the present invention provides a battery pack, please refer to fig. 1 to 7, the battery pack includes: the battery box 10, the battery box 10 includes the bottom plate 11 and frame 12, the frame 12 is set up in the bottom plate 11, in order to form the accommodating space 13; a battery assembly 20, wherein the battery assembly 20 is arranged in the accommodating space 13, and the battery assembly 20 comprises a plurality of single batteries 21; a spacer 30, the spacer 30 being positioned between the battery assembly 20 and the frame 12, the spacer 30 being attached to at least one of the base plate 11 and the frame 12, a mounting space 31 being formed at a side of the spacer 30 facing the frame 12; and a high voltage line 40, wherein the high voltage line 40 is electrically connected with the battery assembly 20, and the high voltage line 40 is arranged in the installation space 31.

The utility model discloses a battery package of an embodiment includes battery box 10, battery pack 20, separator 30 and high tension line 40 set up in battery box 10, through setting up separator 30 between battery pack 20 and frame 12, and separator 30 is formed with installation space 31 towards one side of frame 12, and the high tension line 40 of being connected with battery pack 20 electricity sets up in installation space 31, thereby can make separator 30 realize the isolation to battery pack 20 and high tension line 40, with this influence that reduces high tension line 40 to battery pack 20, thereby the safety performance of battery package has been improved.

It should be noted that the high voltage line 40 is electrically connected to the battery assembly 20, and the high voltage line 40 may serve as a charging/discharging end of the battery pack. The single batteries 21 of the battery assembly 20 may be connected in series, the battery assembly 20 may be multiple, multiple battery assemblies 20 may be connected in series, or multiple battery assemblies 20 may be connected in parallel, and the high voltage line 40 may serve as a charging/discharging terminal of the multiple battery assemblies 20. The high-voltage line 40 needs to form an electrical connection with the battery assembly 20, and a part of the segment of the high-voltage line 40 can be isolated by the isolator 30, that is, the isolator 30 isolates the high-voltage line 40 from the battery assembly 20, so that the high-voltage line 40 can be prevented from influencing the battery assembly 20, or the battery assembly 20 can be prevented from influencing the high-voltage line 40, for example, heat transfer between the high-voltage line 40 and the battery assembly 20 can be prevented, or the high-voltage line 40 can be prevented from influencing the battery assembly 20 by signals, and the like.

A unit cell includes a cell and an electrolyte, and is a minimum unit capable of performing an electrochemical reaction such as charge/discharge. The battery cell refers to a unit formed by winding or laminating a stacking portion, wherein the stacking portion comprises a first pole piece, a partition and a second pole piece. When the first pole piece is a positive pole piece, the second pole piece is a negative pole piece. And the polarities of the first pole piece and the second pole piece can be interchanged.

The single battery is a laminated battery, which is convenient to pack and can be processed to obtain a battery with longer length.

Specifically, electric core is lamination formula electric core, and electric core has first pole piece that stacks up each other, with first pole piece opposite electric property's second pole piece and the diaphragm of setting between first pole piece and second pole piece to make many to pile up and form lamination formula electric core to first pole piece and second pole piece.

Optionally, the single battery may be a winding battery, that is, a first pole piece, a second pole piece opposite to the first pole piece in electrical property, and a diaphragm sheet disposed between the first pole piece and the second pole piece are wound to obtain a winding battery core.

In one embodiment, the side of the spacer 30 facing the frame 12 is formed with a mounting space 31, and the spacer 30 is provided with the mounting space 31, so that the high voltage line 40 is disposed in the mounting space 31.

In one embodiment, a mounting space 31 is formed at a side of the spacer 30 facing the frame 12, and the mounting space 31 is formed between the spacer 30 and the frame 12, so that the high voltage line 40 is disposed in the mounting space 31.

In one embodiment, as shown in fig. 3 and 4, the installation space 31 is an installation groove, and a notch of the installation groove is disposed toward the top of the battery box 10, so that the high-voltage line 40 is conveniently disposed in the installation groove, which is not only simple in operation, but also can improve the installation efficiency of the high-voltage line 40, and can subsequently facilitate the maintenance of the high-voltage line 40.

In one embodiment, as shown in fig. 5 to 7, the installation space 31 is a cavity, that is, a hollow cavity may be formed inside the spacer 30, and the high-voltage line 40 is inserted into the cavity, so as to improve the isolation capability of the spacer 30 with respect to the high-voltage line 40 and the battery assembly 20.

In one embodiment, the frame 12 includes a frame, the frame is disposed around the bottom plate 11, and the spacer 30 is located between the battery assembly 20 and the frame, so that the high-voltage line 40 is disposed at the edge of the battery box 10, the high-voltage line 40 can better achieve heat transfer, when the temperature inside the battery pack is too high, the battery pack can be rapidly cooled, and when the temperature of the battery pack is relatively low, the high-voltage line 40 generates heat and can play a role in keeping the temperature of the battery pack, thereby improving the thermal uniformity of the battery pack.

It should be noted that the frame is disposed around the bottom plate 11 without specific reference, and it is emphasized that the frame forms a circumferentially closed space. The bezel is coupled to the base plate 11, and the bezel may be disposed on the base plate 11, or the bezel may be coupled to a circumferential edge of the base plate 11. The battery case 10 may further include a cover plate coupled to the frame.

The bottom plate 11 and the rim form a large cavity, i.e. the receiving space 13 may be a large cavity. Or the bottom plate 11 and the frame are further provided with partition beams to partition a plurality of small spaces, and in some embodiments, the non-discharge spacers 30 are provided adjacent to the partition beams, so that the high voltage line 40 can be disposed at the middle of the battery case 10. The bottom plate 11 may be used to protect the bottom of the battery case, and the specific structure of the bottom plate 11 is not limited. The frame is connected to the bottom plate 11, and the frame may be formed by splicing a plurality of beam members, or the frame may be a circumferential closed space surrounded by an integral plate-shaped structure.

In one embodiment, as shown in fig. 4, the isolation member 30 and at least a portion of the frame are integrally formed, so that the forming is simple, the structural stability of the isolation member 30 and the frame can be improved, and the structural strength of the isolation member 30 and the frame can be further improved.

It should be noted that at least part of the partition 30 and the frame are integrally formed, and a hoisting structure can be arranged on the part of the frame integrally formed with the partition 30, so as to facilitate hoisting of the battery pack, and the frame integrally formed with the partition 30 has a higher structural strength, so that a larger example can be borne, and thus a hoisting structure can be arranged, and the hoisting structure can be provided with structures such as a hoisting hole or a hoisting hook, and the like, and the position is not limited.

In one embodiment, the installation space 31 is formed between the spacer 30 and the frame, so that the high voltage line 40 can be disposed between the spacer 30 and the frame, and the high voltage line 40 can be reliably limited, thereby improving the safety performance of the battery pack.

In one embodiment, as shown in fig. 1 and 2, the battery pack further includes: the first high-voltage connector 50 is arranged on the frame, and the first high-voltage connector 50 is connected with the high-voltage line 40; the first high-voltage connector 50 is arranged opposite to the installation space 31, so that the connection between the first high-voltage connector 50 and the high-voltage line 40 can be conveniently realized, and the first high-voltage connector 50 can be used for charging and discharging the battery pack, so that the battery pack is convenient to use.

In one embodiment, as shown in fig. 3 and 4, the spacer 30 is provided with an escape passage 32, and the escape passage 32 is disposed opposite to the first high-voltage connector 50; the avoidance channel 32 penetrates through the partition 30, so that the avoidance channel 32 can serve as a space for connecting the first high-voltage connector 50 and the high-voltage line 40, a sufficient installation space is provided for installation personnel or installation machines, the problem that installation difficulty is increased due to the fact that the space is too small is avoided, and therefore the connection efficiency of the first high-voltage connector 50 and the high-voltage line 40 is improved.

In some embodiments, it is not excluded that the escape passage 32 is a groove, i.e., the escape passage 32 may not extend through the partition 30.

In one embodiment, as shown in fig. 6 and 7, the barrier 30 is provided with a protective cover 34, the protective cover 34 being adjustably positioned to cover or release the escape passage 32; wherein, the protective cover 34 sets up in the one side of separator 30 towards battery pack 20 to on the basis that protective cover 34 realized keeping apart high-tension line 40 and battery pack 20, also can guarantee to dodge passageway 32 and can regard as the space of connecting first high-voltage connector 50 and high-tension line 40, provide sufficient installation space for installer or installation machine, avoid the space undersize and increase the problem of installation degree of difficulty.

In one embodiment, the shield cover 34 can be snapped onto the partition 30, the shield cover 34 can be detachably disposed on the partition 30, and the shield cover 34 can be rotatably disposed on the partition 30 such that the shield cover 34 shields or releases the escape passage 32.

In one embodiment, as shown in fig. 2, the battery pack further includes: the second high-voltage connector 51, the second high-voltage connector 51 is set up in the frame, and link with high-voltage line 40; the first high-voltage connector 50 and the second high-voltage connector 51 are arranged at intervals, and the first high-voltage connector 50 and the second high-voltage connector 51 are respectively arranged at two adjacent sides of the frame, so that the first high-voltage connector 50 and the second high-voltage connector 51 can be respectively used for being connected with different parts, for example, a battery pack can be arranged on a vehicle, at this time, the first high-voltage connector 50 can be used for driving a rear wheel of the vehicle, and the second high-voltage connector 51 can be used for driving a front wheel of the vehicle.

In certain embodiments, it is not excluded that the battery pack further comprises a third high pressure side insert, which may be used for charging of the battery pack.

In one embodiment, the high voltage line 40 can be clamped with the spacer 30, which not only facilitates installation, but also improves the connection efficiency of the high voltage line 40 with the spacer 30.

The plurality of snaps 33 are provided on the spacer 30 in the stacking direction of the unit batteries 21, and the plurality of snaps 33 are snapped with the high voltage line 40, so that the high voltage line 40 can be reliably fixed to the spacer 30, thereby improving the mounting stability of the high voltage line 40. In one embodiment, as shown in fig. 3, the high-voltage line 40 includes a high-voltage copper bar 41, and the high-voltage copper bar 41 is disposed in the installation space 31 and connected to the spacer 30, so as to improve the installation stability of the high-voltage copper bar 41, avoid the high-voltage copper bar 41 from shaking and other problems, and thus improve the safety performance of the high-voltage line 40.

In one embodiment, the high voltage copper bars 41 may be bonded to the separator 30.

In one embodiment, the high-voltage copper bar 41 is clamped with the spacer 30, so that the installation method is simple, and the high-voltage copper bar 41 can be conveniently separated from the spacer 30.

The high-voltage copper bar 41 can be directly connected to the spacer 30 in a clamping manner, for example, a buckle, a clamping groove, or the like can be provided on the spacer 30, so that the high-voltage copper bar 41 can be directly connected to the spacer 30 in a clamping manner. Alternatively, the high voltage copper bar 41 and the separator 30 may be snapped together by a third structure.

In one embodiment, as shown in fig. 3, a plurality of buckles 33 are arranged on the spacer 30 along the stacking direction of the single batteries 21, and the plurality of buckles 33 are buckled with the high-voltage copper bar 41, so that the high-voltage copper bar 41 can be reliably fixed on the spacer 30, and the installation stability of the high-voltage copper bar 41 can be improved.

In one embodiment, the stacking direction of the single battery 21 is perpendicular to the large surface of the single battery 21, that is, the large surfaces of two adjacent single batteries 21 of the battery assembly 20 are oppositely arranged, which not only can improve the space utilization rate of the single battery 21, but also can facilitate the stacking of the single batteries 21.

The stacking direction of the single batteries 21 is the arrangement direction of each single battery 21, for example, when there are two single batteries 21, the two single batteries 21 are sequentially arranged along a preset direction, and at this time, the preset direction is the stacking direction of the single batteries 21.

The single battery 21 may include a large surface and a small surface, further, the large surface of the single battery 21 may be regarded as the largest surface of the outer surface of the single battery 21, and the small surface of the single battery 21 may be regarded as a surface having a smaller area than the large surface, for example, the single battery 21 is a quadrangular prism battery, that is, the single battery 21 is a square battery, and in this case, the single battery 21 may include two opposite large surfaces and four small surfaces disposed around the large surfaces.

In one embodiment, the small surface of the unit cell 21 is disposed opposite to the separator 30, that is, the small surfaces of the plurality of unit cells 21 of the battery pack 20 are disposed opposite to the separator 30, thereby reasonably arranging the battery pack 20 and the high voltage line 40 in the battery case 10.

In one embodiment, the unit cell 21 may be provided with an explosion-proof valve 211.

In one embodiment, as shown in fig. 3, a pressure relief structure 121 is disposed on the frame 12, and at least a portion of the mounting space 31 is disposed opposite to the pressure relief structure 121, so that the pressure relief structure 121 can be opened by gas collected in the mounting space 31 in time, and therefore when the internal pressure of the battery pack is too high, the gas in the battery pack can be discharged in time, thereby improving the safety performance of the battery.

The installation space 31 can be used for arranging the high-voltage line 40 electrically connected with the battery assembly 20, so that the isolation of the battery assembly 20 and the high-voltage line 40 can be realized by the isolator 30, the influence of the high-voltage line 40 on the battery assembly 20 is reduced, the gas can be stored in the installation space 31, the pressure relief structure 121 can be opened timely, and the safety performance of the battery is improved.

The pressure relief structure 121 may be a valve body, and when the pressure in the battery case 10 reaches a certain value, the valve body may be opened, so that the gas in the battery case 10 is exhausted. The pressure relief structure 121 may be similar to an explosion-proof structure, for example, similar to an explosion-proof valve, and when the pressure in the battery case 10 reaches a certain value, the explosion-proof structure may be broken, so that the gas in the battery case 10 is exhausted. The pressure relief structure 121 may also be a structure with relatively low strength, such as a thin aluminum plate, which can be broken when the pressure in the battery case 10 reaches a certain value, so as to exhaust the gas in the battery case 10. The pressure relief structure 121 may also be a score, as long as a relatively low strength is achieved.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and example embodiments be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the disclosure is limited only by the appended claims.

Claims (11)

1. A battery pack, comprising:

the battery box body (10), the battery box body (10) comprises a bottom plate (11) and a frame (12), and the frame (12) is arranged on the bottom plate (11) to form a containing space (13);

a battery assembly (20), the battery assembly (20) being disposed within the accommodating space (13), the battery assembly (20) including a plurality of battery cells (21);

a spacer (30), the spacer (30) being located between the battery assembly (20) and the frame (12), the spacer (30) being connected to at least one of the base plate (11) and the frame (12), a mounting space (31) being formed on a side of the spacer (30) facing the frame (12);

a high voltage line (40), the high voltage line (40) with the battery pack (20) is electrically connected, the high voltage line (40) is disposed in the installation space (31).

2. The battery pack according to claim 1, wherein the mounting space (31) is a mounting groove having a notch disposed toward the top of the battery case (10), or the mounting space (31) is a cavity.

3. The battery pack according to claim 1, wherein the frame (12) includes a bezel disposed around the bottom plate (11), the spacer (30) being located between the battery assembly (20) and the bezel.

4. A battery pack, as recited in claim 3, wherein the spacer (30) is integrally formed with at least a portion of the rim;

wherein the spacer (30) and the bezel form the mounting space (31) therebetween.

5. The battery pack according to claim 4, further comprising:

the first high-voltage connector (50), the said first high-voltage connector (50) is set up in the said border, and link with said high-voltage line (40);

wherein the first high-voltage connector (50) is arranged opposite to the mounting space (31).

6. The battery pack according to claim 5, wherein the separator (30) is provided with an escape passage (32), and the escape passage (32) is disposed opposite to the first high-voltage connector (50);

wherein the escape channel (32) passes through the partition (30).

7. The battery pack according to claim 6, wherein a protective cover (34) is provided on the separator (30), the protective cover (34) being capable of shielding the bypass channel (32);

wherein the protective cover (34) is provided on a side of the separator (30) facing the battery assembly (20).

8. The battery pack according to claim 5, further comprising:

the second high-voltage connector (51), the said second high-voltage connector (51) is set up in the said border, and link with said high-voltage line (40);

the first high-voltage connector (50) and the second high-voltage connector (51) are arranged at intervals, and the first high-voltage connector (50) and the second high-voltage connector (51) are respectively arranged on two adjacent sides of the frame.

9. Battery pack according to one of claims 1 to 8, characterized in that the high-voltage line (40) is clamped to the spacer (30).

10. The battery pack according to claim 9, wherein a plurality of snaps (33) are provided on the spacer (30) in the stacking direction of the unit batteries (21), the plurality of snaps (33) being snapped with the high-voltage line (40).

11. Battery pack according to any of claims 1 to 8, characterized in that a pressure relief structure (121) is arranged on the frame (12), the mounting space (31) being arranged opposite at least part of the pressure relief structure (121).

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