CN218731612U - Battery device - Google Patents

Abstract

The utility model relates to a battery technology field provides a battery device, include: the battery comprises a battery body, a pressure relief structure and a pole assembly, wherein the pressure relief structure and the pole assembly are arranged on the same side of the battery body; the bus bar is connected with at least two batteries; the separating structure is arranged on the battery body and separates a first space and a second space, the bus bar is located in the first space, and the second space is opposite to the pressure relief structure, so that the bus bar and the pressure relief structure are separated by the separating structure. The partition structure can reliably separate the busbar and the pressure relief structure, so that when the internal pressure of the battery reaches a certain height, the pressure relief structure explodes, the internal gas of the battery can be discharged to the second space through the battery, the direct injection of the gas onto the busbar in the first space can be avoided, the safety performance of the busbar is guaranteed, and the safety performance of the battery device is improved.

Description

Battery device

Technical Field

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

Background

In the related art, when the internal pressure of the battery device reaches a certain height, the battery can be decompressed through the decompression port, the temperature of gas sprayed out of the battery is relatively high, and if the gas is directly sprayed onto a conductive structural member, the safety problem is easily caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery device to improve battery device's performance.

The utility model provides a battery device, include:

the battery comprises a battery body, a pressure relief structure and a pole assembly, wherein the pressure relief structure and the pole assembly are arranged on the same side of the battery body;

the bus bar is connected with at least two batteries;

the separating structure is arranged on the battery body and is used for separating a first space and a second space, the busbar is located in the first space, and the second space and the pressure relief structure are arranged just opposite to each other, so that the busbar and the pressure relief structure are separated by the separating structure.

The utility model discloses battery device includes a plurality of batteries, busbar and separates the structure, and two at least batteries are connected to the busbar electricity, separate the structure and set up in battery body, separate structure and separate busbar and pressure release structure. Through making the partition structure separate first space and second space, the busbar is located first space, and the second space is just to setting up with pressure relief structure, partition structure can reliably separate busbar and pressure relief structure promptly, thereby when battery internal pressure reaches a take the altitude, pressure relief structure bursts open, thereby make the inside gas of battery can be discharged to the second space by the battery, thereby can avoid gaseous direct injection to being located the busbar in first space, with this security performance who guarantees the busbar, thereby battery device's safety performance 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 in order 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 structural view showing a battery device according to a first exemplary embodiment;

fig. 2 is a partial structural view showing a battery device according to a second exemplary embodiment;

FIG. 3 is a schematic diagram illustrating a partial structure of a battery device according to an exemplary embodiment;

FIG. 4 is a partial schematic structural view of a separator structure of a battery device according to an exemplary embodiment;

fig. 5 is a partial structural schematic view showing a battery device according to a third exemplary embodiment;

fig. 6 is a schematic diagram illustrating a structure of a battery device according to an exemplary embodiment.

The reference numerals are explained below:

10. a battery; 11. a battery body; 12. a pressure relief structure; 13. a pole assembly; 20. a bus bar; 30. a partition structure; 31. a first space; 32. a second space; 321. avoiding the through hole; 322. an air flow channel; 33. a separation section; 34. a support section; 35. a connecting section; 40. a fire-resistant member; 50. a circuit board; 60. a battery case; 61. a base plate; 62. a main frame; 621. an opening; 63. a top cover; 70. a buffer.

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, and it is, therefore, to 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, references to "the" object or "an" object are also intended to mean one of possibly multiple such objects.

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 by those skilled in the art as the case may be.

Further, in the description of the present disclosure, it is to 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 the context of a connection between one element or feature and another element(s), "on," "under," or "inside" or "outside," it can be directly connected to the other element(s) "on," "under" or "inside" or "outside," or indirectly connected to the other element(s) "on," "under" or "inside" or "outside" through intervening elements.

An embodiment of the present invention provides a battery device, please refer to fig. 1 to 5, the battery device includes: the battery 10 comprises a battery body 11, a pressure relief structure 12 and a pole assembly 13, wherein the pressure relief structure 12 and the pole assembly 13 are arranged on the same side of the battery body 11; a bus bar 20, the bus bar 20 connecting at least two batteries 10; the partition structure 30 is disposed on the battery body 11, the partition structure 30 partitions a first space 31 and a second space 32, the bus bar 20 is located in the first space 31, and the second space 32 is opposite to the pressure relief structure 12, so that the bus bar 20 and the pressure relief structure 12 are partitioned by the partition structure 30.

The utility model discloses a battery device of an embodiment includes a plurality of batteries 10, busbar 20 and separation structure 30, and at least two batteries 10 are connected to the busbar 20 electricity, and separation structure 30 sets up in battery body 11, and busbar 20 and pressure release structure 12 are separated to separation structure 30. Through making the partition structure 30 divide first space 31 and second space 32, busbar 20 is located first space 31, and second space 32 is just to setting up with pressure relief structure 12, partition structure 30 can reliably separate busbar 20 and pressure relief structure 12 promptly, thereby when battery 10 internal pressure reaches a take the altitude, pressure relief structure 12 explodes, thereby make battery 10 internal gas can be discharged to second space 32 by battery 10, thereby can avoid gas direct injection to be located on the busbar 20 in first space 31, with this security performance who guarantees busbar 20, thereby the safety performance of battery device has been improved.

It should be noted that the bus bar 20 can be connected with the pole assemblies 13 of two adjacent batteries 10, so as to directly connect the batteries 10 in series or in parallel. And utmost point post subassembly 13 and the 12 intervals of pressure relief structure on battery body 11 set up, thereby can make utmost point post subassembly 13 and pressure relief structure 12 correspond first space 31 and second space 32 respectively, at this moment, even pressure relief structure 12 explodes, the inside gas of battery 10 is discharged by pressure relief structure 12, then can directly discharge into in the second space 32, consequently can not directly spray on busbar 20 and utmost point post subassembly 13, high-temperature gas can not cause the influence to busbar 20 and utmost point post subassembly 13 promptly, thereby can avoid busbar 20 and utmost point post subassembly 13 safety problems such as short circuit, guarantee battery device's security performance with this.

The partition structure 30 partitions the first space 31 and the second space 32, and after the high-temperature gas is discharged into the second space 32, the high-temperature gas can be discharged into other positions for heat dissipation, or after some positions of the high-temperature gas can be discharged into the first space 31, but compared with the case that the high-temperature gas is directly sprayed into the bus bar 20 and the pole assembly 13, the gradual flow of the high-temperature gas into the first space 31 from the second space 32 obviously reduces the temperature of the gas by a large amount, so that the bus bar 20 and the pole assembly 13 are not damaged basically.

The second space 32 is opposite to the pressure relief structure 12, that is, after the pressure relief structure 12 is exploded, high-temperature gas can be directly injected into the second space 32.

In one embodiment, the bus bar 20 and the partition structure 30 may constitute a harness board assembly, and the partition structure 30 may be a harness board.

In one embodiment, the first space 31 is a circumferentially closed space, so that a reliable protection of the bus bar 20 can be formed, and high-temperature gas is prevented from being directly sprayed onto the bus bar 20 and the pole assembly 13, thereby improving the safety performance of the battery device.

In one embodiment, the first space 31 is a circumferentially closed through hole, which not only has a simple structure, can effectively protect the bus bar 20 and the pole assembly 13, but also can reduce the weight of the separation structure 30, thereby improving the energy density of the battery device.

In some embodiments, the first space 31 may be a circumferentially closed groove, so that the bus bar 20 can be snapped into the partition structure 30.

In some embodiments, it is not excluded that the first space 31 is a circumferentially non-closed space, for example, the partition structure 30 may be a plate-shaped structure, and the plate-shaped structure may be located between the bus bar 20 and the pressure relief structure 12, so that the bus bar 20 and the pressure relief structure 12 are effectively isolated, and high-temperature gas is prevented from being directly sprayed onto the bus bar 20 to some extent.

In some embodiments, the first space 31 may be a plurality of spaces, the plurality of spaces 31 may be used to accommodate the plurality of busbars 20, and each of the plurality of spaces 31 may be a circumferentially closed space, or at least one of the plurality of spaces 31 may be a circumferentially non-closed space, and as shown in fig. 4, one of the spaces 31 at the end of the partition structure 30 may be a circumferentially non-closed space.

In one embodiment, at least a portion of the pressure relief structure 12 is located in the second space 32, that is, at least a portion of the pressure relief structure 12 may protrude from the battery body 11, so that at least a portion of the pressure relief structure 12 may be located in the second space 32, which may not only improve the space utilization of the battery device, but also enable the second space 32 to effectively protect the pressure relief structure 12, and further achieve effective separation of the pressure relief structure 12 and the bus bar 20.

It should be noted that in some embodiments, all of the pressure relief structure 12 may be located outside of the second space 32. For example, the pressure relief structure 12 is not provided to protrude from the battery body 11, or the pressure relief structure 12 is provided to protrude from the battery body 11 but to have a certain distance from the second space 32.

In one embodiment, the second space 32 includes a circumferentially non-closed space, so that the high-temperature gas entering the second space 32 can be rapidly discharged to other positions through the second space 32, thereby improving the heat dissipation efficiency of the high-temperature gas, and ensuring the safety performance of the battery device.

In one embodiment, as shown in fig. 4, the second space 32 includes an avoiding through hole 321 and an air flow channel 322, the avoiding through hole 321 is disposed opposite to the pressure relief structure 12 of the plurality of cells 10, the avoiding through hole 321 is in flow communication with the air flow channel 322, and the air flow channel 322 is a non-closed space in the circumferential direction, so that high-temperature gas can be rapidly diffused through the air flow channel 322, thereby improving the heat dissipation capability of the gas.

Dodging through-hole 321 can realize the protection to pressure relief structure 12, guaranteeing that high-temperature gas can be by relatively fixed position blowout, and after high-temperature gas entered into airflow channel 322, high-temperature gas can be discharged by non-confined space's opening to this improves gaseous flow space, thereby can improve gaseous radiating efficiency.

In one embodiment, the avoiding through hole 321 includes a plurality of sub through holes, and the sub through holes are spaced apart from each other along the first direction, so that each sub through hole can correspond to the pressure relief structure 12 of one battery 10.

In an embodiment, as shown in fig. 4, along the first direction, there is one avoiding through hole 321 to be disposed opposite to the plurality of pressure relief structures 12 at the same time, and the separating structure 30 is provided with one large through hole, that is, the avoiding through hole 321 is disposed opposite to the plurality of pressure relief structures 12 at the same time, which not only has a simple structure, but also can improve the forming efficiency of the structure, and can ensure that the separating structure 30 can effectively isolate the pressure relief structures 12 from the bus bar 20.

In one embodiment, as shown in fig. 2 to fig. 4, the airflow channel 322 extends along a first direction, and along the first direction, at least one end of the airflow channel 322 is open, and the first direction is parallel to the stacking direction of the batteries 10, so that the airflow channel 322 can simultaneously correspond to a plurality of batteries 10, and thus it is ensured that high-temperature gas can be exhausted from the airflow channel 322 after the pressure relief structure 12 of a certain battery 10 bursts.

Referring to fig. 3 and 4, the stacking direction of the cells 10 is parallel to a first direction, which may be denoted as a, and the stacking direction of the cells 10 may be considered as a direction perpendicular to the large surface of the cells 10. One first space 31 and one second space 32 may be disposed in a second direction, which may be denoted as B, and may be parallel to the large surface of the battery 10.

In one embodiment, as shown in fig. 2 to 4, the battery 10 includes two pole assemblies 13 in a pair, the pressure relief structure 12 is located between the two pole assemblies 13, the bus bars 20 are arranged in a pair, and the partition structure 30 is formed with a pair of first spaces 31 for respectively accommodating the pair of bus bars 20, so that the partition structure 30 can reliably protect the bus bars 20 and the pressure relief structure 12, thereby improving the safety performance of the battery device.

As shown in connection with fig. 4, the partition structure 30 is formed with two columns of first spaces 31 and a second space 32 located between the two columns of first spaces 31. The two rows of first spaces 31 may correspond to the corresponding bus bars 20, respectively, and the second spaces 32 may correspond to the respective pressure relief structures 12 of the plurality of cells 10 at the same time.

In an ear light embodiment, the battery 10 includes two pole assemblies 13 in pair, the pressure relief structure 12 is located between the two pole assemblies 13, the bus bars 20 are arranged in pair, the separating structures 30 are arranged in pair, a second space 32 is formed between the two separating structures 30 in pair, that is, each separating structure 30 can form a corresponding first space 31 for accommodating the corresponding bus bar 20, and the two separating structures 30 are arranged in a spaced manner, so that the second space 32 can be formed between the two separating structures 30, that is, the second space 32 is not formed inside the separating structure 30, but is formed by a gap between the two separating structures 30, so that the separating structures 30 can be simplified.

In one embodiment, as shown in fig. 4, the partition structure 30 is provided with the fire-proof member 40, so that the fire-proof performance of the partition structure 30 can be improved, thereby preventing the partition structure 30 from being damaged by the high-temperature gas sprayed from the battery 10, and further preventing the high-temperature gas from being directly sprayed onto the bus bar 20.

It should be noted that the fire-proof component 40 can completely cover the separation structure 30, so as to improve the high-temperature resistance of the separation structure 30, and the fire-proof component 40 is made of a material that is flame-resistant, high-temperature-resistant and has a certain mechanical strength, so as to prevent the high-temperature gas from damaging the separation structure 30. Alternatively, the fire-resistant member 40 may partially cover the partition structure 30, or the fire-resistant member 40 may be embedded inside the partition structure 30.

In one embodiment, the side of the partition structure 30 facing the pressure relief structure 12 is provided with a fire-proof member 40, so that the fire-proof member 40 can rapidly block high-temperature gas emitted from the battery 10, thereby preventing heat from being transferred to the bus bar 20.

In one embodiment, the fire-proof member 40 is disposed on a side of the separation structure 30 away from the battery body 11, and the fire-proof member 40 can improve the structural strength of the separation structure 30, and protect the separation structure 30, thereby improving the structural safety of the separation structure 30.

The separation structure 30 can be used for contacting with the bottom plate of the battery box body, the separation structure 30 can be a plastic piece, the separation structure 30 is easy to extrude and deform, and one side deviating from the battery body 11 at the separation structure 30 is provided with the fireproof part 40, so that the fireproof part 40 can play a role in protecting the separation structure 30, and the overall structural strength of the separation structure 30 is improved. For example, the fireproof members 40 may be made of metal, so that the structural strength of the partition structure 30 as a whole can be effectively improved.

In one embodiment, the separation structure 30 and the fireproof element 40 are integrally formed, which not only has a simple structure and facilitates subsequent installation, but also can increase the structural strength of the separation structure 30, thereby improving the protection performance of the separation structure 30 on the battery device.

The fire prevention member 40 may be formed in the partition structure 30 after the formation is completed, and the fire prevention member 40 may be formed in the partition structure 30 during the formation of the partition structure 30. For example, the piece 40 may be a metal piece and the partition structure 30 may be an injection molded piece, such that the piece 40 may be formed on the partition structure 30 during injection molding of the partition structure 30.

In one embodiment, the fireproof member 40 includes a metal member, a mica member or a ceramic member, which has high heat resistance and can have certain structural strength. The metal piece may be coated with a coating, for example, the coating may be a ceramic-type coating or the like.

In one embodiment, as shown in fig. 5, the battery device further includes a circuit board 50, the circuit board 50 is located in the first space 31, the circuit board 50 can be connected to the bus bar 20 to obtain a voltage signal or temperature information, and the circuit board 50 is disposed in the first space 31 to prevent high-temperature gas from being directly sprayed onto the circuit board 50, so as to achieve reliable protection of the circuit board 50, and at the same time, the circuit board 50 is convenient to collect signals of the bus bar 20, and signal collection is not affected by blocking of the partition structure 30.

The circuit board 50 may be a rigid circuit board, or the circuit board 50 may be a flexible circuit board, and the circuit board 50 may be connected to the bus bar 20 through a nickel plate, so as to obtain voltage information. The nickel plate may be provided with a temperature sensor to acquire temperature information, or the temperature sensor of the circuit board 50 may be in contact with the battery body 11 of the battery 10.

In one embodiment, as shown in fig. 1 and fig. 6, the battery device further includes a battery box 60, the battery box 60 includes a bottom plate 61 and a main frame 62, the main frame 62 is connected to the bottom plate 61, the pressure relief structure 12 and the pole assembly 13 are both disposed toward the bottom plate 61, the partition structure 30 is disposed on the bottom plate 61, and the partition structure 30 can reliably support the battery 10 and effectively protect the busbar 20, so as to improve the safety performance of the battery device.

The floor panel 61 and the main frame 62 are formed with upward openings 621, and the openings 621 may be disposed toward a passenger compartment of the vehicle. Pressure relief structure 12 and utmost point post subassembly 13 set up towards bottom plate 61, and when battery 10 took place thermal runaway, pressure relief structure 12 was destroyed to make the inside gaseous blowout of battery 10, at this moment, spun gas can spout bottom plate 61, and when gas flows to battery box 60 top, no matter heat or pressure all can reduce to a certain extent, and at this moment, the damage that gas caused to battery box 60 top will diminish. And the gas sprayed out from the pressure relief structure 12 is prevented from being directly sprayed to the passenger compartment, so that the safety performance of the vehicle is improved. The pressure relief structure 12 of the battery 10 may be a pressure relief structure in the related art, such as an explosion-proof membrane, an explosion-proof valve, etc., and is not limited herein.

When the separation structure 30 is disposed on the bottom plate 61, and the first space 31 and the second space 32 on the separation structure 30 are both through holes, the bottom plate 61 can seal the bottom of the through holes, so that high-temperature gas can be prevented from being diffused everywhere. Of course, in some embodiments, it is not excluded that the first space 31 and the second space 32 on the partition structure 30 are sealed by other structures, for example, by the fire-proof member 40.

In one embodiment, as shown in fig. 2, the battery device further includes a buffer member 70, where the buffer member 70 is disposed between the separation structure 30 and the bottom plate 61, so that the buffer member 70 can form a buffer protection function, and the buffer member 70 can also have a certain sealing property, so as to achieve effective bottom sealing of the first space 31 and the second space 32, and avoid gas from flowing between the first space 31 and the second space 32 through a gap between the separation structure 30 and the bottom plate 61.

The fire-proof part 40 is arranged on the separation structure 30, and the buffer part 70 is arranged between the fire-proof part 40 and the bottom plate 61, so that the fire-proof part 40 is prevented from being in hard contact with the bottom plate 61, and the protection effect on the fire-proof part 40 and the bottom plate 61 can be realized. The base plate 61 may be a metal member.

In one embodiment, as shown in fig. 1, the battery box 60 may further include a top cover 63, and the top cover 63 is connected to the main frame 62 to cover the opening 621, so that the battery 10 can be reliably protected and the battery 10 is prevented from being damaged by external structures. After the top cover 63 and the main frame 62 are connected, the battery pack having the top cover 63 can be directly mounted to the vehicle. Alternatively, the roof 63 may be the vehicle chassis.

The battery case 60 may include a main frame 62, and a top cover 63 and a bottom plate 61 connected to both ends of the main frame 62, where the top cover 63 and the bottom plate 61 are both of a flat plate type structure, or at least one of the top cover 63 and the bottom plate 61 may be formed with an accommodating space, which is not limited herein, for example, the top cover 63 and the bottom plate 61 may be both formed with an accommodating space, in which case, the side structures of the top cover 63 and the bottom plate 61 may form the main frame 62 without being excluded.

At least one of the top cover 63 and the bottom plate 61 may be formed with a heat exchange channel, thereby achieving reliable heat exchange of the battery 10, and thus improving safety use performance of the battery device.

In some embodiments, the battery pack may not include the top cover 63, and in this case, the battery pack has an open top structure, for example, the battery pack may be applied to an energy storage structure, and the battery pack not including the top cover 63 may improve the heat dissipation capability of the battery pack.

In one embodiment, as shown in fig. 4, the partition structure 30 includes: the two sides of the separation section 33 are respectively provided with a bus bar 20 and a pressure relief structure 12; a support section 34, the support section 34 being in contact with an edge position of the battery body 11; the connecting section 35, the opposite ends of the connecting section 35 are respectively connected with the separating section 33 and the supporting section 34; the first space 31 is formed by the separation section 33, the support section 34 and the connection section 35, and the second space 32 is formed by the side of the separation section 33 facing away from the first space 31. The separation section 33 realizes effective separation of the bus bar 20 and the pressure relief structure 12, thereby preventing high-temperature gas from being sprayed toward the bus bar 20, while the support section 34 can realize reliable support of the battery body 11, improving the installation performance of the battery 10, and the connection section 35 not only realizes protection of the bus bar 20, but also can improve the structural strength of the separation structure 30.

Support section 34 contacts with the border position of battery body 11 to can make support section 34 and separation section 33 support battery 10 jointly, avoid bottom plate 61 atress to transmit to pressure relief structure 12, thereby prevent that pressure relief structure 12 from discovering the deformation, with this assurance pressure relief structure 12 can normally explode. The edge of the battery body 11 is mostly welded to the battery case, and the strength is high, so that the support section 34 can effectively support the battery 10, and the connection section 35 can further share the pressure of the battery 10, thereby improving the structural stability.

In one embodiment, the heights of the separation section 33, the support section 34, and the connection section 35 are uniform, that is, the opposite ends of the separation section 33, the support section 34, and the connection section 35 may be flush, so that the separation structure 30 can reliably support the battery 10, thereby improving the stability of the battery 10. The bus bars 20 can be respectively located in the independent first spaces 31, and the mutual influence between the first spaces 31 can be avoided, so that the safety performance of the battery device is improved.

It should be noted that the battery device is a battery module or a battery pack.

The battery module includes a plurality of batteries 10, and the battery module may further include end plates and side plates for fixing the plurality of batteries 10.

The plurality of batteries 10 may be formed into a battery module and then disposed in the battery case 60, and the plurality of batteries 10 may be fixed by end plates and side plates. The plurality of cells 10 may be disposed directly in the cell case 60, i.e., without grouping the plurality of cells, and at this time, the end plates and the side plates may be removed.

Note that the battery 10 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 stack including a first electrode, a separator, and a second electrode. When the first electrode is a positive electrode, the second electrode is a negative electrode. Wherein the polarities of the first electrode and the second electrode can be interchanged.

The battery 10 may be a prismatic battery, that is, the battery 10 may be a quadrangular prism battery, and a quadrangular prism battery mainly refers to a battery in which the shape of a prism is a prism, but it is not strictly limited whether each side of the prism is a straight line in a strict sense, and corners between sides are not necessarily right angles, and may be in a circular arc transition. In certain embodiments, it is not excluded that the battery may be a cylindrical battery.

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 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 present disclosure is limited only by the appended claims.

Claims (18)

1. A battery device, comprising:

the battery pack comprises a plurality of batteries (10), wherein each battery (10) comprises a battery body (11), a pressure relief structure (12) and a pole assembly (13), and the pressure relief structures (12) and the pole assemblies (13) are arranged on the same side of the battery body (11);

a busbar (20), the busbar (20) connecting at least two of the cells (10);

the separating structure (30) is arranged on the battery body (11), the separating structure (30) is used for separating a first space (31) and a second space (32), the busbar (20) is located in the first space (31), and the second space (32) and the pressure relief structure (12) are arranged right opposite to each other, so that the busbar (20) and the pressure relief structure (12) are separated by the separating structure (30).

2. A battery device according to claim 1, characterized in that the first space (31) is a circumferentially closed space.

3. A battery device according to claim 2, characterized in that the first space (31) is a circumferentially closed through hole.

4. The battery device according to claim 1, wherein at least part of the pressure relief structure (12) is located within the second space (32).

5. The battery device according to claim 1, wherein the second space (32) comprises a circumferentially non-enclosed space.

6. The battery device according to claim 5, wherein the second space (32) comprises an avoiding through hole (321) and an air flow channel (322), the avoiding through hole (321) is arranged opposite to the pressure relief structure (12) of the plurality of batteries (10), the avoiding through hole (321) is communicated with the air flow channel (322), and the air flow channel (322) is a circumferentially non-closed space.

7. The battery device according to claim 6, wherein the bypass through hole (321) comprises a plurality of sub through holes, and the plurality of sub through holes are arranged at intervals along the first direction, or the bypass through hole (321) is one along the first direction so as to be simultaneously opposite to the plurality of pressure relief structures (12);

wherein the air flow channel (322) extends in the first direction, at least one end of the air flow channel (322) is open in the first direction, and the first direction is parallel to the stacking direction of the cells (10).

8. The battery device according to claim 1, characterized in that the battery (10) comprises two pole assemblies (13) in pairs, the pressure relief structure (12) is located between the two pole assemblies (13), the busbars (20) are arranged in pairs, and the partition structure (30) is formed with the first spaces (31) in pairs for accommodating the busbars (20) in pairs, respectively.

9. The battery device according to claim 1, characterized in that the battery (10) comprises two pole assemblies (13) in pair, the pressure relief structure (12) is located between the two pole assemblies (13), the busbars (20) are arranged in pair, the separating structures (30) are arranged in pair, and the second space (32) is formed between the two separating structures (30) in pair.

10. A battery device according to claim 1, characterized in that the partition structure (30) is provided with a fire-proof element (40).

11. The battery device according to claim 10, characterized in that the side of the separating structure (30) facing the pressure relief structure (12) is provided with the fire protection (40) and/or the side of the separating structure (30) facing away from the battery body (11) is provided with the fire protection (40).

12. The battery device according to claim 10, wherein the partition structure (30) and the fireproof member (40) are of an integrally formed structure.

13. The battery device according to claim 10, characterized in that the fire-protection element (40) comprises a metal, mica or ceramic element.

14. The battery device according to any one of claims 1 to 13, characterized in that the battery device further comprises a circuit board (50), the circuit board (50) being located within the first space (31).

15. The battery device according to any one of claims 1 to 13, further comprising a battery case (60), wherein the battery case (60) comprises a bottom plate (61) and a main frame (62), the main frame (62) is connected to the bottom plate (61), the pressure relief structure (12) and the pole assembly (13) are both disposed toward the bottom plate (61), and the separation structure (30) is disposed on the bottom plate (61).

16. The battery device according to claim 15, further comprising a buffer member (70), wherein the buffer member (70) is disposed between the partition structure (30) and the bottom plate (61).

17. The battery device according to any one of claims 1 to 13, wherein the separation structure (30) comprises:

the bus bar (20) and the pressure relief structure (12) are respectively arranged on two sides of the separation section (33);

a support section (34), the support section (34) being in contact with an edge position of the battery body (11);

a connecting section (35), opposite ends of the connecting section (35) being connected to the separating section (33) and the supporting section (34), respectively;

wherein the separating section (33), the supporting section (34) and the connecting section (35) form the first space (31), and the side of the separating section (33) facing away from the first space (31) forms the second space (32).

18. The battery device according to claim 17, wherein the height of the separation section (33), the support section (34) and the connection section (35) are uniform.

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