CN217848255U - Battery pack with insulating layer and battery pack - Google Patents

Abstract

The utility model discloses a battery pack with an insulating layer and a battery pack, wherein the battery pack with the insulating layer comprises a first battery module, the first battery module comprises a plurality of first single batteries, and poles among the first single batteries are connected through a first bus bar; the second battery module comprises a plurality of second single batteries, and the poles among the second single batteries are connected through a second bus bar; the first bus bar and the second bus bar which are close to each other are covered with a first insulating layer, and the first bus bar and the second bus bar which are far from each other are covered with a second insulating layer respectively. According to the utility model discloses group battery with insulating layer can shorten the time of manufacturing process flow effectively, also can effectually form the insulating protective screen of one deck above first busbar and second busbar, prevents that high temperature conducting material from dropping and arousing the short circuit and draw the arc phenomenon on first busbar and second busbar.

Description

Battery pack with insulating layer and battery pack

Technical Field

The utility model relates to a mechanical structure technical field especially relates to a group battery and battery package with insulating layer.

Background

In the related art, in order to avoid the problem that when thermal runaway occurs, conductive substances sprayed from batteries fall on the surface of a bus bar and overlap with other conductors to cause short circuit arcing, and further cause thermal runaway of other batteries, mica plates are covered on the bus bar of a battery pack to prevent the high-temperature conductive substances from falling on the bus bar, for example, a heat diffusion-proof battery module with an authorization notice number of CN216251036U is provided, wherein a high-temperature-resistant insulating sheet is provided to cover the bus bar on a wire harness isolation plate, however, in practice, if each module is provided with a high-temperature-resistant insulating sheet separately, the time of a manufacturing process flow can be greatly prolonged, the working efficiency is reduced, and the improvement is provided.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a group battery with insulating layer has good short circuit prevention effect.

The utility model also provides a battery package, including foretell group battery with insulating layer.

The utility model also provides a group battery with insulating layer, include:

the first battery module comprises a plurality of first single batteries which are stacked along a first direction, and polar columns among the first single batteries are connected through a first bus bar; and

the second battery module comprises a plurality of second single batteries stacked along a first direction, and polar columns among the plurality of second single batteries are connected through a second bus bar;

the first battery module and the second battery module are arranged along a second direction, and the first direction is vertical to the second direction;

the first bus bar and the second bus bar which are close to each other are covered with a first insulating layer, and the first bus bar and the second bus bar which are far from each other are covered with a second insulating layer respectively.

According to the utility model discloses group battery with insulating layer, the first busbar that is close to mutually covers with the second busbar jointly and is equipped with the first insulation layer, keeps away from first busbar mutually and then covers respectively with the second busbar and be equipped with the second insulating layer, consequently that some busbar that is close to mutually only need cover set up one deck first insulation layer can, then need not to cover alone and set up different insulating layers again, this time that can shorten manufacturing process flow effectively improves work efficiency. And the first insulating layer and the second insulating layer can also play a certain role in protecting the first bus bar and the second bus bar, so that the problem of thermal runaway of other batteries caused by the fact that conducting substances sprayed by the batteries fall on the surfaces of the first bus bar and the second bus bar and overlap with other electric conductors to cause short circuit arc discharge is avoided, namely, an insulating barrier can be effectively formed above the first bus bar and the second bus bar, and the phenomenon of short circuit arc discharge caused by the fact that high-temperature conducting substances fall on the first bus bar and the second bus bar is prevented. More importantly, when the first insulating layer covers the first bus bar and the second bus bar which are close to each other, the first insulating layer is equivalent to connect the first bus bar and the second bus bar together and is equivalent to form a whole, and the structural strength of the battery pack with the insulating layer can be effectively improved.

According to the utility model discloses battery package, including foretell group battery with insulating layer.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic structural diagram of a battery pack with an insulating layer according to an embodiment of the present invention;

fig. 2 is a schematic view of another structure of a battery pack with an insulating layer according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of the first bus bar, the second bus bar and the third bus bar of the battery pack with the insulating layer according to the embodiment of the present invention;

fig. 4 is a schematic view of another structure of a battery pack with an insulating layer according to an embodiment of the present invention;

fig. 5 is another schematic diagram of the first bus bar, the second bus bar and the third bus bar of the battery pack with the insulating layer according to the embodiment of the present invention;

fig. 6 is another schematic structural diagram of the first bus bar, the second bus bar and the third bus bar of the battery pack with the insulating layer according to the embodiment of the present invention;

fig. 7 is a schematic view of another structure of the first bus bar, the second bus bar and the third bus bar of the battery pack with the insulating layer according to the embodiment of the present invention;

icon: 1-first battery module, 11-first battery cell, 12-first busbar, 2-second battery module, 21-second battery cell, 22-second busbar, 3-connecting beam, 4-first insulating layer, 5-second insulating layer, 6-third busbar, 7-third insulating layer.

Detailed Description

For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element 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 invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

A battery pack and a battery pack with an insulating layer according to an embodiment of the present invention will be described with reference to fig. 1 to 7.

As shown in fig. 1, a battery pack with an insulating layer according to an embodiment of the present invention includes a first battery module 1, the first battery module 1 includes a plurality of first single batteries 11 stacked in a first direction, and terminals between the plurality of first single batteries 11 are connected by a first bus bar 12; the second battery module 2 comprises a plurality of second single batteries 21 stacked along a first direction, and poles among the plurality of second single batteries 21 are connected through a second bus bar 22; the first battery module 1 and the second battery module 2 are arranged along a second direction, and the first direction is vertical to the second direction; the first bus bar 12 and the second bus bar 22 close to each other are covered with the first insulating layer 4, and the first bus bar 12 and the second bus bar 22 far from each other are covered with the second insulating layer 5. Wherein the width of the first insulating layer 4 may be specifically larger than the width of the second insulating layer 5.

It should be noted that the battery pack with the insulating layer at least comprises two battery modules, for example, a first battery module 1 and a second battery module 2, and the working principle is now explained by the two battery modules:

the plurality of first unit cells 11 in the first battery module 1 may be specifically arranged in a row, such as five in a row, ten in a row, fifteen in a row, etc., and the plurality of second unit cells 21 in the second battery module 2 may also be specifically arranged in a row, such as five in a row, ten in a row, fifteen in a row, etc.; in addition, the first battery module 1 and the second battery module 2 are arranged in parallel to form a row-column structure, and the first single battery 11 and the second single battery 21 are also arranged in parallel to each other, so that the first insulating layer 4 is covered on the first bus bar 12 and the second insulating layer 5 are covered on the second bus bar 22 which are close to each other, and the second insulating layer 5 is covered on the first bus bar 12 and the second bus bar 22 which are far from each other, so that the part of the bus bar close to each other only needs to be covered with one layer of the first insulating layer 4, and does not need to be covered with different insulating layers, thereby effectively shortening the time of the manufacturing process flow and improving the working efficiency. Moreover, the first insulating layer 4 and the second insulating layer 5 can also play a certain role in protecting the first bus bar 12 and the second bus bar 22, so that the problem that when thermal runaway occurs, conductive substances sprayed by the batteries fall on the surfaces of the first bus bar 12 and the second bus bar 22 and are lapped on other electric conductors to cause short circuit arc discharge is avoided, and further, thermal runaway of other batteries is caused, namely, a layer of insulating barrier can be effectively formed above the first bus bar 12 and the second bus bar 22, and the phenomenon that high-temperature conductive substances fall on the first bus bar 12 and the second bus bar 22 to cause short circuit arc discharge is prevented.

More importantly, when the first insulating layer 4 covers and is arranged on the adjacent first bus bar 12 and the second bus bar 22, the parts are connected together, and the whole is formed, so that the structural strength of the battery pack with the insulating layer can be effectively increased.

Further, as shown in fig. 2-5, according to the battery pack with the insulating layer of the embodiment of the present invention, at least two groups of battery packs are provided, and a connecting beam 3 is provided between two adjacent groups of battery packs; wherein, be connected with third busbar 6 between two first battery cells 11 that are located the different sides of tie-beam 3, or be connected with third busbar 6 between two second battery cells 21 that are located the different sides of tie-beam 3, or be provided with third busbar 6 between first battery cell 11 that is located the different sides of tie-beam 3 and second battery cell 21.

It should be noted that, in order to increase the battery capacity of the battery pack with the insulating layer, at least two groups of the battery packs may be specifically arranged, the capacity is increased by increasing the number of the single batteries, because the number of the battery packs is increased, in order to increase the structural strength and the structural stability of the battery pack with the insulating layer, specifically, the connection beam 3 is arranged between two adjacent groups of the battery packs, wherein, in order to connect the battery packs located at two sides of the connection beam 3, the third bus bar 6 is connected between two first single batteries 11 located at different sides of the connection beam 3, or the third bus bar 6 is connected between two second single batteries 21 located at different sides of the connection beam 3, or the third bus bar 6 is connected between the first single batteries 11 and the second single batteries 21 located at different sides of the connection beam 3, so that the battery packs located at two sides of the connection beam 3 can be effectively connected through the third bus bar 6 to perform normal power supply, in conclusion, not only the whole battery capacity is increased, but also the structural strength and the structural stability of the battery packs are improved, and the short circuit preventing effect is also achieved.

Further, as shown in fig. 2 to 5, the battery pack with an insulating layer according to the embodiment of the present invention further includes a third insulating layer 7, and the third insulating layer 7 is disposed on the third bus bar 6; wherein the third insulating layer 7 is integrally arranged between the two first insulating layers 4 positioned at different sides of the connecting beam 3; or the third insulating layer 7 is integrally arranged between the two second insulating layers 5 positioned on different sides of the connecting beam 3; alternatively, the third insulating layer 7 is integrally provided between two first insulating layers 4 and two second insulating layers 5 located on different sides of the connecting beam 3.

It should be known that, in the battery pack with the insulating layer, because the battery packs on the two sides of the connecting beam 3 are connected through the third bus bar 6, the occurrence of short circuit arcing caused by the fact that a conductive substance sprayed from the battery falls on the surface of the third bus bar 6 and is lapped on other electric conductors during thermal runaway is avoided, and therefore the third insulating layer 7 is covered on the third bus bar 6, the overall protection capability can be effectively improved, and the short circuit arcing caused by the fact that the high-temperature conductive substance falls on the third bus bar 6 is prevented.

More importantly, the third insulating layer 7 is not directly and individually arranged on the surface of the third busbar 6, but is jointly and integrally arranged with the two first insulating layers 4, the two second insulating layers 5, or the two first insulating layers 4 and the two second insulating layers 5, namely, an integral insulating layer structure is formed, and then the integral insulating layer structure is jointly covered on different busbars; and, wherein the third busbar 6 still can partially cover and set up on tie-beam 3, this not only links a plurality of different busbars into an entirety, still can link tie-beam 3 into an entirety too, has further improved the structural strength of this group battery with insulating layer.

Further, as shown in fig. 2 and 3, according to the battery pack with the insulating layer of the embodiment of the present invention, the third bus bar 6 and the third insulating layer 7 are both provided across the connection beam 3.

Further, as shown in fig. 2 and 3, according to the battery pack with the insulating layer of the embodiment of the present invention, the third bus bar 6 is disposed between two first single batteries 11 on different sides of the connecting beam 3 and between two second single batteries 21 on different sides of the connecting beam 3.

It should be noted that, since the third bus bar 6 is connected between the two first single batteries 11 on different sides of the connecting beam 3, and the third bus bar 6 is also connected between the two second single batteries 21 on different sides of the connecting beam 3, the number of the third bus bars 6 is specifically two, and at this moment, only one third insulating layer 7 is needed, one third insulating layer 7 can be covered on the surfaces of the two third bus bars 6, and the third insulating layer 7 can also be integrated with the two first insulating layers 4, while the two second insulating layers 5 on two sides are not connected but disconnected.

And when this group battery with insulating layer is prepared, only need can cover the first busbar 12, second busbar 22 and the third busbar 6 that are located the middle part with the insulating layer of an integration setting, can save material effectively, also can further shorten the time of manufacturing process flow, improve work efficiency, structural strength and structural stability also can obtain certain promotion simultaneously, hold many birds with one stone.

Further, as shown in fig. 2 and 3, according to the battery pack with the insulating layer of the embodiment of the present invention, a pair of third bus bars 6 is disposed close to each other, and a third insulating layer 7 is integrally disposed between two first insulating layers 4 disposed on different sides of the connecting beam 3.

It should be noted that the number of the third busbars 6 is specifically two, two third busbars 6 are specifically concentrated on the middle portion of the connecting beam 3, and at this moment, only one third insulating layer 7 is needed, and one third insulating layer 7 can cover the surfaces of the two third busbars 6, so that materials can be effectively saved, the time of the manufacturing process can be further shortened, and the work efficiency can be improved.

Of course, in some other embodiments, as shown in fig. 4 and 5, according to the battery pack with the insulating layer of the embodiment of the present invention, the pair of third bus bars 6 are disposed away from each other, and the third insulating layer 7 is integrally disposed between the two second insulating layers 5 on different sides of the connecting beam 3.

It should be noted that the number of the third bus bars 6 in the battery pack with insulation layers is also two, but the third bus bars are not disposed in the middle of the connecting beam 3, but disposed on both sides of the connecting beam 3, so that the third insulation layers 7 need to be disposed in two, and also disposed on both sides of the connecting beam 3, wherein one third insulation layer 7 is integrally disposed between the two second insulation layers 5, so that two integrated insulation layers are formed and disposed on both sides of the connecting beam 3, and the two first insulation layers 4 in the middle are not connected but disconnected. In conclusion, the first bus bar 12, the second bus bar 22 and the third bus bar 6 on two sides can be covered by the integrally arranged insulating layer, so that the time of the manufacturing process flow can be shortened to a certain extent, the working efficiency is improved, and meanwhile, the structural strength and the structural stability can be improved to a certain extent, thereby achieving multiple purposes.

In other embodiments, as shown in fig. 6 and 7, according to the battery pack with the insulating layer of the embodiment of the present invention, a pair of third bus bars 6 is disposed between the first single battery 11 and the second single battery 21 on different sides of the connecting beam 3, and the pair of third bus bars 6 is disposed in a crossing manner and insulated from each other.

It should be noted that the number of the third bus bars 6 in the battery pack with the insulating layer is also specifically two, and the two third bus bars 6 are arranged in a crossing manner and in an insulating manner, and are arranged in a height direction of the first unit cells 11.

As shown in fig. 6, when the two ends of the third bus bar 6 are connected to the adjacent ends of the first single battery 11 and the second single battery 21, the third insulating layer 7 is integrally disposed between the two first insulating layers 4 on different sides of the connecting beam 3, it should be noted that the number of the third bus bar 6 is specifically two, the two third bus bars 6 are specifically concentrated in the middle of the connecting beam 3, and at this moment, only one third insulating layer 7 is needed, and one third insulating layer 7 can be covered on the surfaces of the two third bus bars 6, so that materials can be effectively saved, the time of the manufacturing process can be further shortened, and the work efficiency can be improved.

Of course, in some other embodiments, as shown in fig. 7, according to the battery pack with the insulating layer of the embodiment of the present invention, when the two ends of the third bus bar 6 are connected to the far ends of the first unit cells 11 and the second unit cells 21, the third insulating layer 7 is integrally disposed between the two first insulating layers 4 and the two second insulating layers 5 located on different sides of the connecting beam 3. It is noted that the number of the third busbars 6 is specifically two, and it is now possible to simultaneously integrate the two first insulating layers 4 and the two second insulating layers 5 with only one third insulating layer 7,

further, as shown in fig. 1 to 5, according to the battery pack with an insulating layer according to an embodiment of the present invention, the upper surface of the first insulating layer 4, the second insulating layer 5, and/or the third insulating layer 7 is provided with a fire-proof layer.

It should be noted that, in the battery pack with the present insulating layer, any one, or any two, or all three of the first insulating layer 4, the second insulating layer 5, or the third insulating layer 7 may be specifically provided with a fireproof layer, which can form a fireproof barrier on the first insulating layer 4, the second insulating layer 5, or the third insulating layer 7, and can more effectively prevent the high-temperature conductive substance from dropping on the first bus bar 12, the second bus bar 22, and the third bus bar to cause the short circuit and arcing phenomenon, thereby improving the short circuit prevention performance of the battery pack with the present insulating layer.

Further, as shown in fig. 1 to 5, in the battery pack with the insulating layer according to the embodiment of the present invention, the width of the first insulating layer 4 is greater than the width of the second insulating layer 5; the first insulating layer 4 is thicker than the second insulating layer 5 and the third insulating layer 7. Since the first insulating layer 4 needs to cover the first bus bar 12 and the second bus bar 22 close to each other, a larger dimension width is needed, and the number of bus bars covered by the first insulating layer 4 in the center is larger, so that a better protection effect can be provided by providing a thicker first insulating layer 4.

According to the utility model discloses battery pack, including foretell group battery that has the insulating layer, still include the crossbeam that a plurality of looks intervals set up and the longeron that a plurality of looks intervals set up, wherein, the crossbeam is crossed with moving about freely and quickly and is connected for separate the battery box for a plurality of bins, the bin is used for holding the group battery that has the insulating layer.

According to the utility model discloses battery, including foretell battery package, wherein the battery can specifically set up to battery and fuel cell and lithium cell, for example lead acid battery, nickel-hydrogen battery, cobalt acid lithium cell, lithium iron phosphate battery and ternary lithium cell etc..

According to the utility model discloses power consumption terminal, including foretell battery, wherein, power consumption terminal can specifically set up to cell-phone, panel computer, notebook computer, desktop computer, electric motorcycle car, new energy automobile, steamer etc..

The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.

Claims (11)

1. A battery pack with an insulating layer, comprising:

the battery pack comprises a first battery module (1), wherein the first battery module (1) comprises a plurality of first single batteries (11) which are stacked along a first direction, and poles among the first single batteries (11) are connected through a first bus bar (12); and

the second battery module (2) comprises a plurality of second single batteries (21) stacked along a first direction, and poles among the plurality of second single batteries (21) are connected through a second bus bar (22);

the first battery module (1) and the second battery module (2) are arranged in a second direction, and the first direction is perpendicular to the second direction;

the first bus bar (12) and the second bus bar (22) which are close to each other are jointly covered by a first insulating layer (4), and the second bus bar (22) which is far from the first bus bar (12) and the second bus bar is respectively covered by a second insulating layer (5).

2. The battery pack with an insulating layer according to claim 1, wherein: the battery packs are at least provided with two groups, and a connecting beam (3) is arranged between two adjacent groups of battery packs and is arranged along a first direction;

a third bus bar (6) is connected between the two first single batteries (11) positioned on different sides of the connecting beam (3);

or a third bus bar (6) is connected between the two second single batteries (21) positioned on different sides of the connecting beam (3);

or a third bus bar (6) is connected between the first single battery (11) and the second single battery (21) which are positioned on different sides of the connecting beam (3).

3. The battery pack with an insulating layer according to claim 2, wherein: the third bus bar is characterized by further comprising a third insulating layer (7), wherein the third insulating layer (7) is arranged on the third bus bar (6) in a covering mode;

the third insulating layer (7) is integrally arranged between the two first insulating layers (4) on different sides of the connecting beam (3);

or the third insulating layer (7) is integrally arranged between the two second insulating layers (5) positioned on different sides of the connecting beam (3);

or the third insulating layer (7) is integrally arranged between the two first insulating layers (4) and the two second insulating layers (5) which are positioned on different sides of the connecting beam (3).

4. The battery pack with an insulating layer according to claim 3, wherein: the third bus bar (6) and the third insulating layer (7) are arranged across the connecting beam (3).

5. The battery pack with an insulating layer according to any one of claims 3 or 4, wherein: the third bus bar (6) is arranged between the two first single batteries (11) on different sides of the connecting beam (3) and between the two second single batteries (21) on different sides of the connecting beam (3).

6. The battery pack with an insulating layer according to claim 5, wherein: the pair of third bus bars (6) is arranged close to each other, and the third insulating layer (7) is integrally arranged between the two first insulating layers (4) positioned on different sides of the connecting beam (3);

or the pair of third bus bars (6) are arranged far away from each other, and the third insulating layer (7) is integrally arranged between the two second insulating layers (5) on different sides of the connecting beam (3).

7. The battery pack with an insulating layer according to any one of claims 3 or 4, wherein: and a pair of third bus bars (6) is arranged between the first single battery (11) and the second single battery (21) which are positioned on different sides of the connecting beam (3).

8. The battery pack with an insulating layer according to claim 7, wherein: the pair of third busbars (6) is arranged in a crossed mode and is insulated;

the third insulating layer (7) is integrally arranged between the two first insulating layers (4) positioned on different sides of the connecting beam (3);

or the third insulating layer (7) is integrally arranged between the two first insulating layers (4) and the two second insulating layers (5) which are positioned on different sides of the connecting beam (3).

9. The battery pack with an insulating layer according to claim 6 or 8, wherein: the upper surfaces of the first insulating layer (4), the second insulating layer (5) and/or the third insulating layer (7) are/is provided with a fireproof layer.

10. The battery pack with an insulating layer according to claim 9, wherein: the width of the first insulating layer (4) is greater than the width of the second insulating layer (5);

the first insulating layer (4) is greater than the thickness of the second insulating layer (5) and the third insulating layer (7).

11. A battery pack, comprising: battery comprising a battery with an insulation layer according to any of claims 1-10.

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