CN220382264U - Battery box, battery pack and power utilization device - Google Patents

Abstract

The application provides a battery box, battery package and power consumption device, battery box include bottom plate and interval set up a plurality of support piece on the bottom plate, are formed with exhaust passage between two adjacent support pieces, and support piece all is formed with the step, and the step exceeds the bottom plate setting to make the electric core pass through the step and install on two adjacent support pieces. Through setting up support piece on the bottom plate, set up the step on support piece with the electricity core for the bottom plate bed hedgehopping to adjacent support piece interval sets up, makes the electricity core place behind the step, and the explosion-proof valve and the bottom plate interval set up of electricity core bottom, are formed with the gas quick exhaust's of confession explosion-proof valve outgoing exhaust passage in the below of explosion-proof valve, can be fast with gas discharge, reduce thermal runaway's risk. And the support piece is arranged on the bottom plate, so that the manufacturing mode is simple, and the manufacturing cost is low.

Description

Battery box, battery pack and power utilization device

Technical Field

The application relates to the technical field of lithium battery manufacturing, in particular to a battery box, a battery pack and an electric device.

Background

The battery pack comprises a battery box body and a battery core arranged in the battery box body, wherein an explosion-proof valve is arranged on the battery core, and when the pressure in the battery core reaches a set explosion pressure, the explosion-proof valve is opened, and gas is discharged through the explosion-proof valve, so that the pressure relief explosion-proof effect is achieved. The discharge speed of the blast valve air flow is related to the use safety of the battery pack. The explosion-proof valve is generally arranged facing the bottom plate of the battery box body, and the too close distance between the explosion-proof valve and the bottom plate influences the airflow discharge speed of the explosion-proof valve, so that the explosion-proof valve has a large potential safety hazard.

The foregoing is merely a description of the related art and is not an admission that the applicant is prior art.

In view of the foregoing, it is desirable to provide a new battery case, battery pack and power consuming device that solve or at least alleviate the above-mentioned technical drawbacks.

Disclosure of Invention

In view of the above problems, the present application provides a battery case, a battery pack and an electric device, which aim to solve the technical problems of low gas discharge speed and potential safety hazard of the explosion-proof valve in the related art.

According to some embodiments of the present application, the present application provides a battery box, including bottom plate and interval set up in a plurality of supports on the bottom plate, adjacent two be formed with exhaust passage between the support, the support all is formed with the step, the step exceeds the bottom plate sets up, so that the electric core passes through the step is installed adjacent two on the support.

Through setting up support piece on the bottom plate, set up the step on support piece with the electricity core for the bottom plate bed hedgehopping to adjacent support piece interval sets up, makes the electricity core place behind the step, and the explosion-proof valve and the bottom plate interval set up of electricity core bottom, are formed with the gas quick exhaust's of confession explosion-proof valve outgoing exhaust passage in the below of explosion-proof valve, can be fast with gas discharge, reduce thermal runaway's risk. And the support piece is arranged on the bottom plate, so that the manufacturing mode is simple, and the manufacturing cost is low.

In some embodiments, the support includes a top surface and a bottom surface disposed opposite, the bottom surface being connected to the bottom plate, the top surface portion being recessed toward the bottom surface to form the step, the step being disposed toward the adjacent exhaust passage.

Through setting up the step on each support piece, after the electric core is placed on adjacent support piece's step, have two at least steps to support the electric core, bearing structure is more reliable. And the step position avoids the position of the battery core explosion-proof valve, so that the explosion-proof valve is exposed and arranged facing the exhaust channel, and the gas in the explosion-proof valve is conveniently discharged.

In some embodiments, the step includes a supporting surface and a limiting surface, the limiting surface connects the top surface and the supporting surface, the supporting surface is arranged towards the top surface and is used for supporting the battery cell, and the limiting surface is used for limiting the battery cell.

Through setting up the support of two steps and supporting the electric core, it is spacing to carry out spacingly to the electric core through setting up spacing, can play support and bed hedgehopping effect to the electric core for there is the interval between explosion-proof valve and the bottom plate, can also keep bigger bleeder space, and gas can be discharged smoothly from the explosion-proof valve, can also ensure that the electric core is installed firmly.

In some embodiments, the steps include a first step and a second step, the first step having a height that is less than a height of the second step.

Through setting the step to the first step and the second step that the ladder set up, can be applicable to not unidimensional electric core, promoted the application scope of battery box.

In some embodiments, the support members include a first support member, a second support member, and a third support member that are disposed at intervals, the first support member and the third support member are disposed on two sides of the bottom plate along a length direction and are disposed in mirror symmetry, and the second support member is disposed between the first support member and the third support member.

Through setting up support piece to including first support piece, second support piece and the third support piece that the interval set up, can set up a plurality of electric cores simultaneously to the explosion-proof valve homoenergetic of each electric core sets up towards the exhaust passage, is convenient for with explosion-proof valve exhaust gas exhaust.

In some embodiments, the number of the second supporting pieces is plural, and the plural second supporting pieces are uniformly spaced.

Through setting up the second support piece of a plurality of quantity, can set up the quantity of second support piece according to the quantity of actual electric core to be applicable to different application scenario.

In some embodiments, the first support includes a first bracket and a second support respectively disposed at the top corners of the base plate, and a third bracket disposed between the first bracket and the second support at a distance; the second support piece comprises a fourth support, a fifth support and a sixth support, wherein the fourth support and the fifth support are respectively arranged on two opposite sides of the bottom plate, the sixth support is arranged between the fourth support and the fifth support at intervals, and the steps are respectively arranged on the first support, the second support, the third support, the fourth support, the fifth support and the sixth support.

Through all setting up first support piece and second support piece to including three at least supports that set up along bottom plate width direction, all set up the step on each support, can realize supporting the electric core from each position of electric core, promote the reliability of supporting. Can also set up more steps at bottom plate width direction to hold more electric core, be applicable to the demand of different scenes.

In some embodiments, one step is formed on each of the first bracket and the second bracket, two steps are formed on each of the third bracket, the fourth bracket and the fifth bracket, four steps are formed on each of the sixth bracket, and the steps are respectively arranged at the top corners of the first bracket, the second bracket, the third bracket, the fourth bracket, the fifth bracket and the sixth bracket.

Through setting up the step in the apex angle department of each support, can support four apex angles of electric core through four steps of four supports, promote bearing structure's reliability.

In some embodiments, the first, second, third, fourth, and fifth supports are each provided with one of the steps, and the sixth support is provided with two of the steps, the steps being disposed at intermediate positions of the first, second, third, fourth, fifth, and sixth supports, respectively.

Through setting up the step in the intermediate position department of each support, can support the electric core through two steps of two supports, can promote bearing structure's reliability to can reduce the use quantity of support, reduce the cost of manufacture.

In some embodiments, the number of the third brackets and the sixth brackets is plural, the plural third brackets are disposed at intervals, and the plural sixth brackets are disposed at intervals.

Through setting up the third support and the sixth support of a plurality of numbers, can set up the quantity of third support and sixth support according to the quantity of actual electric core, can hold more quantity electric core in width direction like this to be applicable to different application scenario.

In some embodiments, the support is an insulator.

By arranging the supports as insulators such that there is no electrical contact between adjacent supports and adjacent brackets, the risk of short circuits is reduced.

In some embodiments, an elastic buffer layer is disposed on the step.

By providing an elastic buffer layer on the step. So as to reduce the risk of collision damage caused by direct contact between the battery cell and the harder step surface.

According to some embodiments of the present application, the present application provides a battery pack, the battery pack includes a plurality of electric cores and battery box as described above, be provided with explosion-proof valve on the electric core, a plurality of electric cores all install in support piece, explosion-proof valve orientation exhaust passage sets up, just explosion-proof valve with the bottom plate interval sets up. The power utilization device comprises all embodiments of all the technical schemes of the battery pack, so that the power utilization device has at least all the beneficial effects brought by all the embodiments, and the description is omitted herein.

According to some embodiments of the present application, there is provided an electrical device including a housing, in which a mounting location is provided, the mounting location being used for mounting the battery pack. The power utilization device comprises all embodiments of all the technical schemes of the battery pack, so that the power utilization device has at least all the beneficial effects brought by all the embodiments, and the description is omitted herein.

The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the accompanying drawings. In the drawings:

FIG. 1 is a schematic illustration of a vehicle according to some embodiments of the present application;

fig. 2 is an exploded view of a battery pack according to some embodiments of the present application;

FIG. 3 is a schematic diagram of a cell structure;

FIG. 4 is a schematic view of a battery pack according to some embodiments of the present disclosure;

FIG. 5 is a schematic view of a battery pack according to another embodiment of the present disclosure;

FIG. 6 is a schematic diagram of a battery case according to some embodiments of the present disclosure;

FIG. 7 is another schematic view of a battery case according to some embodiments of the present application;

FIG. 8 is a schematic cross-sectional view of a portion of a support member according to some embodiments of the present application;

fig. 9 is a schematic view of another partial cross-sectional structure of a support member according to some embodiments of the present application.

Reference numerals in the specific embodiments are as follows:

1000. a vehicle;

100. a battery pack; 200. a controller; 300. a motor;

30. a battery case;

1. a first support; 2. a second support; 3. a third support; 4. an exhaust passage; 5. a step; 51. a first step; 52. a second step; 53. a support surface; 54. a limiting surface; 11. a first bracket; 12. a second bracket; 13. a third bracket; 21. a fourth bracket; 22. a fifth bracket; 23. a sixth bracket; 6. a top surface; 7. a bottom surface;

20. a battery module; 201. a battery cell; 202. an explosion-proof valve;

31. a cover member; 32. a bottom plate.

Detailed Description

Embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical solutions of the present application, and thus are only examples, and are not intended to limit the scope of protection of the present application.

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 application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first," "second," etc. are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, which means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural sheets" refers to two or more (including two).

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the embodiments of the present application and for simplifying the description, rather than indicating or implying that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

Currently, the application of power batteries is more widespread from the development of market situation. The power battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles, and the like, and a plurality of fields such as military equipment, aerospace, and the like. With the continuous expansion of the application field of the power battery, the market demand of the power battery is also continuously expanding.

The battery pack comprises a battery box body and a battery module arranged in the battery box body, the battery module is formed by combining a plurality of battery cores, each battery core is provided with an explosion-proof valve, and when the air pressure in the battery core exceeds a preset value, the explosion-proof valve can be opened to discharge high-temperature and high-pressure air. It has been found that the discharge speed of the air flow of the explosion-proof valve is related to the use safety of the battery pack, so that it is considered that an exhaust passage is provided for the explosion-proof valve, and a certain interval exists between the battery cell and the battery case after the battery cell is mounted, and the interval is used as the exhaust passage to enable the air coming out of the explosion-proof valve to be rapidly discharged. Through careful study, it is found that the protruding end can be arranged on the battery cell, the protruding end extends out of the battery cell shell to a height greater than that of the explosion-proof valve, so that after the battery cell is mounted on the battery box body, the protruding end is in contact with the bottom plate of the battery box body, and because the protruding end is greater than that of the explosion-proof valve, a space exists between the explosion-proof valve and the bottom plate, and an exhaust channel can be formed between the bottom plate and the battery cell, so that the gas exhausted by the explosion-proof valve can flow away rapidly. However, this design requires a protruding end on each cell, which is costly and complicates the cell fabrication process.

The battery box body and the battery module are manufactured into a battery pack together, and the battery pack is used as an electric device of a power supply or various energy storage systems using the battery pack as an energy storage element. The power device may be, but is not limited to, a cell phone, tablet, notebook computer, electric toy, electric tool, battery car, electric car, ship, spacecraft, etc. Among them, the electric toy may include fixed or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric plane toys, and the like, and the spacecraft may include planes, rockets, space planes, and spacecraft, and the like.

For convenience of description, the following embodiment will take an electric device according to an embodiment of the present application as an example of the vehicle 1000.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1000 according to some embodiments of the present application. The vehicle 1000 may be a fuel oil vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or a range-extended vehicle. The battery pack 100 is provided inside the vehicle 1000, and the battery pack 100 may be provided at the floor or the head or the tail of the vehicle 1000. The battery pack 100 may be used for power supply of the vehicle 1000, for example, the battery pack 100 may serve as an operating power source of the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, the controller 200 being configured to control the battery pack 100 to power the motor 300, for example, for operating power requirements during start-up, navigation, and travel of the vehicle 1000.

In some embodiments of the present application, the battery pack 100 may not only serve as an operating power source for the vehicle 1000, but also as a driving power source for the vehicle 1000, instead of or in part instead of fuel oil or natural gas, to provide driving power for the vehicle 1000.

Referring to fig. 2, the battery pack 100 includes a battery case 30 and a battery module 20, and the battery module 20 is received in the battery case 30. The battery box 30 is configured to provide an accommodating space for the battery module 20, and the battery box 30 may have various structures. In some embodiments, the battery case 30 may include a bottom plate 32 and a cover 31, the bottom plate 32 and the cover 31 being covered with each other, the bottom plate 32 and the cover 31 together defining a receiving space for receiving the battery module 20. The cover member 31 may be a hollow structure with one end opened, the bottom plate 32 may be a plate structure, and the bottom plate 32 covers the opening side of the cover member 31, so that the bottom plate 32 and the cover member 31 together define an accommodating space; the bottom plate 32 and the cover 31 may be hollow structures each having one side open, and the open side of the bottom plate 32 may be closed to the open side of the cover 31. Of course, the battery case 30 formed by the bottom plate 32 and the cover 31 may be of various shapes, such as a cylinder, a rectangular parallelepiped, etc. It should be noted that, in fig. 2, the cell 201 has a square shape, but in reality, the cell may be a cylindrical cell or a square cell.

In the battery pack 100, the battery module 20 includes a plurality of battery cells 201, and the battery cells 201 may be connected in series or parallel or in parallel, and the series-parallel refers to that the battery cells 201 are connected in series or parallel. The multiple electric cores 201 can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the multiple electric cores 201 is accommodated in the battery box 30; of course, the battery pack 100 may also be a battery module form formed by connecting a plurality of battery cells 201 in series or parallel or series-parallel connection, and then connecting a plurality of battery modules in series or parallel or series-parallel connection to form a whole and be accommodated in the battery case 30. The battery pack 100 may also include other structures, for example, the battery pack 100 may also include a bus bar member for making electrical connection between the plurality of battery cells 201.

Wherein each cell 201 may be a secondary battery or a primary battery; but not limited to, lithium sulfur batteries, sodium ion batteries, or magnesium ion batteries. The cell 201 may be cylindrical, flat, rectangular, or otherwise shaped.

Referring to fig. 3-5, according to some embodiments of the present application, the present application provides a battery box 30, including a bottom plate 32 and a plurality of supports that are arranged on the bottom plate 32 at intervals, an exhaust channel 4 is formed between two adjacent supports, each support is formed with a step 5, and the step 5 is higher than the bottom plate 32, so that a battery cell 201 is mounted on two adjacent supports through the step 5.

The battery box 30 includes a bottom plate 32 and a cover member 31 covering the bottom plate 32, and the bottom plate 32 and the cover member 31 cooperate to form an accommodating space, in which the battery cell 201 is disposed, specifically, the battery cell 201 is generally disposed on the bottom plate 32. In this embodiment, a plurality of supporting members are disposed on the bottom plate 32 at intervals, a step 5 is formed on the supporting members, the step 5 is used for supporting the battery cell 201, and the step 5 is disposed higher than the bottom plate 32, so that when the battery cell 201 is placed on the step 5, a certain interval exists between the explosion-proof valve 202 of the battery cell 201 and the bottom plate 32, the interval forms an exhaust channel 4, and gas coming out from the explosion-proof valve 202 can be rapidly exhausted through the exhaust channel 4. In this embodiment, the steps 5 are disposed on each support member, and the steps 5 on each support member are disposed opposite to each other, and each cell 201 is not placed on one step 5, but is supported by the steps 5 on two support members adjacent to each other at a distance. The support member may be provided on the base plate 32 by riveting, screwing, welding, or integrally forming.

Through setting up support piece on bottom plate 32, set up step 5 on support piece with electric core 201 for bottom plate 32 bed hedgehopping to adjacent support piece interval sets up, makes electric core 201 place on step 5 after, and explosion-proof valve 202 and bottom plate 32 interval setting of electric core 201 bottom are formed with the gas supply explosion-proof valve 202 to come out the gas exhaust passageway 4 that discharges rapidly in the below of explosion-proof valve 202, can be with gas discharge fast, reduce the risk of thermal runaway. And the support piece arranged on the bottom plate 32 is simple in manufacturing mode and low in manufacturing cost.

Referring to fig. 6-8, in some embodiments, the support includes a top surface 6 and a bottom surface 7 disposed opposite each other, the bottom surface 7 being connected to the bottom plate 32, the top surface 6 being partially recessed toward the bottom surface 7 to form a step 5, the step 5 being disposed toward the adjacent exhaust passage 4.

The supporting member may be a square block or a square frame, the top surface 6 of the supporting member is upward, the bottom surface 7 is connected with the bottom plate 32, and the top surface is partially recessed to form the step 5, that is, the height of the supporting surface 53 of the step 5 is smaller than the height of the top surface 6. The steps 5 are arranged towards the exhaust channel 4, so that the battery cell 201 is conveniently arranged on the steps 5 of the adjacent supporting pieces, at the moment, the steps 5 are supported by one step 5 of one supporting piece, at least two steps 5 are supported from the edge or vertex angle position of the bottom of the battery cell 201, and the supporting structure is firmer; and support from the border position or the apex angle of electricity core 201 bottom, can not shelter from the position of electricity core 201 explosion-proof valve 202, can also keep bigger bleeder space for explosion-proof valve 202 can expose and set up towards exhaust passage 4, the discharge of the interior gaseous of explosion-proof valve 202 of being convenient for.

By providing the step 5 on each support, when the cell 201 is placed on the step 5 of an adjacent support, at least two steps 5 support the cell 201, and the support structure is more reliable. And the position of the step 5 avoids the position of the explosion-proof valve 202 of the battery cell 201, so that the explosion-proof valve 202 is exposed and arranged facing the exhaust channel 4, and the gas in the explosion-proof valve 202 is conveniently discharged.

Referring to fig. 8, in some embodiments, the step 5 includes a supporting surface 53 and a limiting surface 54, the limiting surface 54 connects the top surface 6 and the supporting surface 53, the supporting surface 53 is disposed toward the top surface 6 to support the cell 201, and the limiting surface 54 is used to limit the cell 201.

The height of the step 5 is smaller than that of the top surface 6, the supporting surface 53 can be a horizontal plane, so that the battery cell 201 can be placed conveniently, and the limiting surface 54 is arranged on the periphery of the supporting surface 53 but does not completely surround the supporting surface 53, so that a notch is left, and the battery cell 201 can be placed conveniently. The limiting surface 54 may be a vertical surface perpendicular to the supporting surface 53, when the battery cell 201 is placed on the supporting surface 53 of the step 5, the limiting surface 54 abuts against or is separated from the periphery of the battery cell 201 by a small distance, so that the battery cell 201 is difficult to move, and firm installation is ensured. As shown in fig. 4 and 6, the four corners of the cell 201 are supported by the two steps 5 of the first support 1 and the respective support surfaces 53 of the total four steps 5 of the two steps 5 of the second support 12, and the respective stopper surfaces 54 of the respective steps 5 are stopper from the four corners of the cell 201.

Through setting up the holding surface 53 of two steps 5 and supporting electric core 201, carry out spacingly through setting up spacing face 54 to electric core 201, can play support and bed hedgehopping effect to electric core 201 for there is the interval between explosion-proof valve 202 and bottom plate 32, can also keep bigger air escape space, and gas can be discharged smoothly from explosion-proof valve 202, can also ensure that electric core 201 installs firmly.

Referring to fig. 9, in some embodiments, the step 5 includes a first step 51 and a second step 52, the height of the first step 51 being less than the height of the second step 52.

The first step 51 and the second step 52 are connected in a similar way to the usual stair form, the height of the supporting surface 53 of the first step 51 is smaller than the height of the supporting surface 53 of the second step 52, and the height of the supporting surface 53 of the second step 52 is smaller than the height of the top surface 6. And the interval between the two first steps 51 of the adjacent supporting members is smaller than the interval between the two second steps 52 of the same adjacent supporting members, so that the battery cell 201 can be placed on the first steps 51 when the size of the battery cell 201 is large, and can be placed on the second steps 52 when the size of the battery cell 201 is small. Of course, those skilled in the art will appreciate that the electrical cell 201 is placed on either the first step 51 or the second step 52, and that there is a space between the explosion-proof valve 202 and the bottom plate 32, and that the gas exhausted from the explosion-proof valve 202 can be exhausted from the exhaust passage 4.

The steps 5 are arranged to be the first steps 51 and the second steps 52 which are arranged in the steps, so that the battery box body 30 can be suitable for battery cells 201 with different sizes, and the application range of the battery box body 30 is improved.

Referring to fig. 4 to 6, in some embodiments, the support members include a first support member 1, a second support member 2, and a third support member 3 that are disposed at intervals, where the first support member 1 and the third support member 3 are disposed on two sides of the bottom plate 32 along the length direction and are disposed in mirror symmetry, and the second support member 2 is disposed between the first support member 1 and the third support member 3.

The lengthwise direction of the bottom plate 32 is shown by arrow a in fig. 6. The first supporting piece 1 and the third supporting piece 3 are respectively arranged on two sides of the bottom plate 32 along the length direction, the first supporting piece 1 and the third supporting piece 3 are identical in structure and are arranged in a mirror symmetry mode, and a symmetry axis is a bisector, namely a midline, of the bottom plate 32 along the length direction. The second supporting member 2 is arranged between the first supporting member 1 and the third supporting member 3 and is respectively arranged at intervals with the first supporting member 1 and the third supporting member 3, an exhaust channel 4 is formed at intervals between the first supporting member 1 and the second supporting member 2, the exhaust channel 4 is formed at intervals between the second supporting member 2 and the third supporting member 3, a plurality of electric cores 201 are arranged at intervals between the second supporting member 2 and the third supporting member 3, each electric core 201 can be placed on the step 5 of the first supporting member 1 and the second supporting member 2 or on the step 5 of the second supporting member 2 and the third supporting member 3, a plurality of electric cores 201 can be placed between the first supporting member 1 and the second supporting member 2, and a plurality of electric cores 201 can also be placed between the second supporting member 2 and the third supporting member 3.

By arranging the support members to include the first support member 1, the second support member 2, and the third support member 3 arranged at intervals, a plurality of cells 201 can be simultaneously arranged, and the explosion-proof valve 202 of each cell 201 can be arranged facing the exhaust passage 4, facilitating the exhaust of the gas exhausted by the explosion-proof valve 202.

In some embodiments, the number of the second supporting pieces 2 is plural, and the plurality of the second supporting pieces 2 are uniformly spaced.

The number of the second supporting pieces 2 is plural, the plural second supporting pieces 2 are arranged at intervals along the length direction of the bottom plate 32, an exhaust passage 4 is formed between two adjacent second supporting pieces 2, an exhaust passage 4 is formed between the second supporting piece 2 closest to the first supporting piece 1 and the first supporting piece 1, and an exhaust passage 4 is formed between the second supporting piece 2 closest to the third supporting piece 3 and the third supporting piece 3, so that a larger number of battery cells 201 can be accommodated.

By arranging a plurality of second supporting members 2, the number of the second supporting members 2 can be set according to the number of the actual battery cells 201, so as to be suitable for different application scenes.

Referring to fig. 4 to 6, in some embodiments, the first support 1 includes a first bracket 11 and a second support 2 respectively disposed at the top corners of the bottom plate 32, and a third bracket 13 disposed at a distance between the first bracket 11 and the second support 2; the second supporting member 2 includes a fourth bracket 21, a fifth bracket 22, and a sixth bracket 23 disposed between the fourth bracket 21 and the fifth bracket 22 at intervals, which are disposed on opposite sides of the bottom plate 32, respectively, and the first bracket 11, the second bracket 12, the third bracket 13, the fourth bracket 21, the fifth bracket 22, and the sixth bracket 23 are each provided with a step 5.

The first supporting member 1, the second supporting member 2 and the third supporting member 3 may be composed of a plurality of brackets arranged at intervals, and each bracket is provided with a step 5. In this design, each cell 201 is supported by at least two brackets disposed at intervals. The support from the corners of the cell 201 can be realized by the first support 11 and the fourth support 21, or by the first support 11, the third support 13, the fourth support 21, and the sixth support 23. Specifically, the first, second and third brackets 11, 12 and 13 are arranged at intervals along the width direction of the bottom plate 32, and similarly, the fourth, fifth and sixth brackets 21, 22 and 23 are arranged along the width direction of the bottom plate 32, and the third support 3 may also include three brackets having the same structures as the first, second and third brackets 11, 12 and 13, respectively, and being disposed in mirror symmetry. This allows more cells 201 to be mounted from the width direction.

Through setting up first support 1 and second support 2 all to including at least three support that sets up along bottom plate 32 width direction, all set up step 5 on each support, can realize supporting electric core 201 from each position of electric core 201, promote the reliability of supporting. More steps 5 can be arranged in the width direction of the bottom plate 32 so as to accommodate more battery cells 201, and the requirements of different scenes can be met.

Referring to fig. 4 to 6, in some embodiments, one step 5 is formed on each of the first bracket 11 and the second bracket 12, two steps 5 are formed on each of the third bracket 13, the fourth bracket 21 and the fifth bracket 22, four steps 5 are formed on the sixth bracket 23, and the steps 5 are respectively disposed at the top corners of the first bracket 11, the second bracket 12, the third bracket 13, the fourth bracket 21, the fifth bracket 22 and the sixth bracket 23.

In this embodiment, one cell 201 is mounted on the steps 5 of the four supports, that is, the four top corners of the cell 201 are respectively abutted against the four steps 5, and the cell 201 is supported by the four steps 5. Specifically, the battery cells 201 may be placed on the first bracket 11, the third bracket 13, the fourth bracket 21 and the sixth bracket 23, or may be placed on the second bracket 12, the third bracket 13, the fifth bracket 22 and the sixth bracket 23, wherein the number of steps 5 of the third bracket 13 and the sixth bracket 23 located at the middle position is greater, and a greater number of battery cells 201 may be simultaneously supported.

Through setting up step 5 in the apex angle department of each support, can support four apex angles of electric core 201 through four steps 5 of four supports, promote bearing structure's reliability.

Referring to fig. 7, in some embodiments, the first, second, third, fourth, and fifth brackets 11, 12, 13, 21, and 22 are each provided with one step 5, the sixth bracket 23 is provided with two steps 5, and the steps 5 are disposed at intermediate positions of the first, second, third, fourth, fifth, and sixth brackets 11, 12, 13, 21, 22, and 23, respectively.

In this embodiment, one cell 201 is mounted on the steps 5 of the two supports, that is, the two positions of the cell 201 are respectively abutted against the two steps 5, and the cell 201 is supported by the two steps 5. Specifically, the battery cell 201 may be placed on the first bracket 11 and the fourth bracket 21, may be placed on the second bracket 12 and the fifth bracket 22, and may be placed on the third bracket 13 and the sixth bracket 23. Wherein, the steps 5 of the third bracket 13 and the sixth bracket 23 positioned at the middle position are more, and more electric cells 201 can be simultaneously supported.

Through setting up step 5 in the intermediate position department of each support, can support electric core 201 through two steps 5 of two supports, can promote bearing structure's reliability to can reduce the use quantity of support, reduce manufacturing cost.

In some embodiments, the number of the third brackets 13 and the sixth brackets 23 is plural, the plural third brackets 13 are disposed at intervals, and the plural sixth brackets 23 are disposed at intervals.

The number of the third brackets 13 is plural, the plural third brackets 13 are arranged at intervals in the width direction of the bottom plate 32, the third bracket 13 closest to the first bracket 11 is arranged at intervals from the first bracket 11, and the third bracket 13 closest to the second bracket 12 is arranged at intervals from the second bracket 12, so that a larger number of the battery cells 201 can be accommodated in the width direction. Similarly, the number of sixth holders 23 is plural, the plural sixth holders 23 are arranged at intervals in the width direction of the bottom plate 32, the sixth holder 23 closest to the fourth holder 21 is arranged at intervals from the fourth holder 21, and the sixth holder 23 closest to the fifth holder 22 is arranged at intervals from the fifth holder 22, so that a larger number of the battery cells 201 can be accommodated in the width direction.

By providing a plurality of third brackets 13 and a plurality of sixth brackets 23, the number of the third brackets 13 and the sixth brackets 23 can be set according to the number of the actual battery cells 201, so that a larger number of battery cells 201 can be accommodated in the width direction to be suitable for different application scenarios.

In some embodiments, the support is an insulator.

The insulating member may be made of an insulating material or externally coated with an insulating layer, such as a metal member having an insulating coating, a high temperature resistant rubber or a plastic material. And the support member is required to have a certain high temperature mechanical stability so that deformation or softening does not easily occur at a high temperature.

By arranging the supports as insulators such that there is no electrical contact between adjacent supports and adjacent brackets, the risk of short circuits is reduced.

In some embodiments, an elastic buffer layer is provided on the step 5.

The elastic buffer layer may be made of an elastic material adhered or otherwise arranged on the step 5, and may be made of rubber or silica gel or other materials with certain elasticity. The battery cell 201 can be arranged on the supporting surface 53 of the step 5, can be arranged on the limiting surface 54 of the step 5, or is provided with elastic buffer layers on the supporting surface 53 and the limiting surface 54, so that the risk of collision damage with the step 5 in the process of placing or using the battery cell 201 is reduced.

By providing an elastic buffer layer on the step 5. So as to reduce the risk of collision damage caused by direct contact between the battery cell 201 and the harder step 5 surface.

According to some embodiments of the present application, the present application provides a battery pack 100, where the battery pack 100 includes a plurality of battery cells 201 and a battery box 30 as described above, the battery cells 201 are provided with explosion-proof valves 202, the plurality of battery cells 201 are all installed in a support, the explosion-proof valves 202 are disposed towards the exhaust channel 4, and the explosion-proof valves 202 are disposed at intervals with the bottom plate 32. Since the power utilization device includes all embodiments of all the technical solutions of the battery pack 100, at least all the beneficial effects of all the embodiments are provided, and will not be described in detail herein.

According to some embodiments of the present application, there is provided an electric device including a housing, in which a mounting position is provided, the mounting position being used for mounting the battery pack 100. Since the power utilization device includes all embodiments of all the technical solutions of the battery pack 100, at least all the beneficial effects of all the embodiments are provided, and will not be described in detail herein.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the embodiments, and are intended to be included within the scope of the claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (13)

1. The utility model provides a battery box, its characterized in that, including bottom plate and interval set up in a plurality of support piece on the bottom plate, two adjacent be formed with exhaust passage between the support piece, support piece is including the top surface and the bottom surface of setting up dorsad, the bottom surface with the bottom plate is connected, top surface part orientation the bottom surface is sunken to form the step, the step orientation is adjacent exhaust passage sets up, the step exceeds the bottom plate sets up, so that the electric core passes through the step is installed on two adjacent support pieces.

2. The battery box of claim 1, wherein the step comprises a supporting surface and a limiting surface, the limiting surface connects the top surface and the supporting surface, the supporting surface is arranged towards the top surface and is used for supporting the battery cell, and the limiting surface is used for limiting the battery cell.

3. The battery compartment of claim 1, wherein the steps include a first step and a second step, the first step having a height that is less than a height of the second step.

4. The battery box as claimed in any one of claims 1 to 3, wherein the supporting members include a first supporting member, a second supporting member and a third supporting member which are disposed at intervals, the first supporting member and the third supporting member are disposed on two sides of the bottom plate along a length direction respectively and are disposed in mirror symmetry, and the second supporting member is disposed between the first supporting member and the third supporting member.

5. The battery compartment of claim 4, wherein the number of second support members is a plurality, the plurality of second support members being evenly spaced apart.

6. The battery case according to claim 4, wherein the first support member includes a first bracket and a second bracket respectively provided at the top corners of the bottom plate, and a third bracket provided between the first bracket and the second bracket at a distance; the second support piece comprises a fourth support, a fifth support and a sixth support, wherein the fourth support and the fifth support are respectively arranged on two opposite sides of the bottom plate, the sixth support is arranged between the fourth support and the fifth support at intervals, and the steps are respectively arranged on the first support, the second support, the third support, the fourth support, the fifth support and the sixth support.

7. The battery case of claim 6, wherein one of the steps is formed on each of the first bracket and the second bracket, two of the steps are formed on each of the third bracket, the fourth bracket and the fifth bracket, four of the steps are formed on the sixth bracket, and the steps are respectively provided at the top corners of the first bracket, the second bracket, the third bracket, the fourth bracket, the fifth bracket and the sixth bracket.

8. The battery case according to claim 6, wherein the first, second, third, fourth, and fifth brackets are each provided with one of the steps, and the sixth bracket is provided with two of the steps, the steps being provided at intermediate positions of the first, second, third, fourth, fifth, and sixth brackets, respectively.

9. The battery box of claim 6, wherein the number of the third brackets and the sixth brackets is plural, the plural third brackets are arranged at intervals, and the plural sixth brackets are arranged at intervals.

10. A battery box according to any one of claims 1 to 3, wherein the support member is an insulating member.

11. The battery box of any one of claims 1-3, wherein an elastic buffer layer is provided on the step.

12. The battery pack is characterized by comprising a plurality of electric cores and the battery box body according to any one of claims 1-11, wherein explosion-proof valves are arranged on the electric cores, the electric cores are all installed on the supporting piece, the explosion-proof valves face the exhaust channel, and the explosion-proof valves are arranged at intervals with the bottom plate.

13. An electrical device comprising the battery pack of claim 12.