CN219040661U - Battery pack and power utilization device - Google Patents

Abstract

The application discloses battery package and power consumption device, battery package includes: the box body is internally provided with an accommodating space; the beam body is arranged in the accommodating space to divide the accommodating space into a plurality of accommodating subchambers; the battery monomers are arranged in the accommodating subchamber and are adhered to the beam body; wherein: the beam body is internally provided with a first preset cavity, the box body is provided with a second preset cavity, the second preset cavity can be communicated with the first preset cavity, the battery unit is provided with a pressure release mechanism, and the exhaust end of the pressure release mechanism extends into the first preset cavity. Compared with the prior art, the first cavity of predetermineeing and the second cavity of predetermineeing of setting up in the box are through setting up in the roof beam body to this application, and the second is predetermineeing the cavity and can be linked together with first cavity of predetermineeing, and pressure release mechanism's exhaust end extends into first cavity of predetermineeing, and the exhaust space of battery package forms in first cavity and second cavity of predetermineeing to battery package utilization ratio has been improved.

Description

Battery pack and power utilization device

Technical Field

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

Background

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.

In the prior art, a pressure release mechanism is arranged on a battery cell, so that the exhaust space is required to be reserved in a battery pack in order to avoid explosion of a battery cell caused by unsmooth exhaust after the pressure release mechanism is opened after the battery cell is in thermal runaway, and the exhaust space occupies the arrangement space of the battery cell in a battery compartment, so that the volume utilization rate is reduced.

Disclosure of Invention

In view of the above, the present application provides a battery pack and an electric device, so as to solve the technical problem that the exhaust space in the prior art reduces the battery pack volume utilization rate.

In a first aspect, the present application provides a battery pack comprising:

the box body is internally provided with an accommodating space;

the beam body is arranged in the accommodating space to divide the accommodating space into a plurality of accommodating subchambers;

the battery monomers are arranged in the accommodating subchamber and are adhered to the Liang Tishang;

wherein:

the novel battery is characterized in that a first preset cavity is formed in the beam body, a second preset cavity is formed in the box body, the second preset cavity can be communicated with the first preset cavity, a pressure release mechanism is arranged on the battery cell, and the exhaust end of the pressure release mechanism extends into the first preset cavity.

In the technical scheme of this embodiment, through setting up first cavity and the second of predetermineeing in the box in the roof beam body and predetermine the cavity, the second is predetermineeing the cavity and can be linked together with first cavity of predetermineeing, and pressure release mechanism's exhaust end extends into first cavity of predetermineeing, and the exhaust space of battery package forms in first cavity and second cavity of predetermineeing to battery package volume utilization ratio has been improved.

In some embodiments, a first exhaust channel is provided on the beam body, the first exhaust channel is in communication with the first preset cavity, and an exhaust end of the pressure relief mechanism extends from the first exhaust channel into the first preset cavity. After thermal runaway of the battery monomer, the pressure release mechanism is started, the sprayed high-temperature gas and the particulate matters are discharged into a first preset cavity of the beam body through a first exhaust channel, the temperature of the particulate matters is reduced through the first preset cavity in a longer path, the risk that the sprayed matters cause high-voltage failure is reduced, meanwhile, the exhaust space in a battery pack outside the beam body can be saved, and the battery pack group efficiency and the energy density are improved.

In some embodiments, each accommodating subchamber is provided with a plurality of groups of battery cells, the plurality of groups of battery cells extend along the length direction of the beam body, each group of battery cells comprises two battery cells, and the two battery cells are stacked along the height direction of the beam body. The efficiency of battery monomer's group can be improved in the setting like this, can realize the balanced exhaust effect about in the first cavity of predetermining simultaneously, and the one skilled in the art can know that the single number of battery monomer and the distribution that include in every group battery monomer all can be according to actual design, does not limit here.

In some embodiments, the first vent channel includes a plurality of first vents disposed at intervals, each of the first vents disposed corresponding to one of the battery cells. Through setting the first exhaust passage as a plurality of mutually independent first exhaust holes, the blowout high temperature gas and the particulate matter no longer contact with other battery monomer after the battery monomer is out of control, has stopped the thermal diffusion risk.

In some embodiments, the beam body is provided with a second exhaust channel communicated with the first preset cavity, the box body is provided with a third exhaust channel communicated with the second preset cavity, and the third exhaust channel and the second exhaust channel are correspondingly arranged in a sealing manner. Therefore, the volume of the exhaust space can be further enlarged, and the condition of explosion of the pressure release mechanisms of the battery monomers can be prevented. When the high-temperature gas sprayed by the pressure release mechanism is flushed into the first preset cavity in the beam body after the battery monomer is out of control, part of the high-temperature gas is discharged along the length direction of the first preset cavity, and part of the high-temperature gas is sequentially discharged into the second preset cavity through the second exhaust channel and the third exhaust channel.

In some embodiments, the second predetermined cavity is provided in a bottom wall and/or a side wall of the case. Therefore, the existing structure of the box body can be utilized to set the second preset cavity, and the situation that components are added in the box body to set the second preset cavity is avoided, so that the space utilization rate of the box body is improved.

In some embodiments, the second exhaust channel comprises a plurality of second exhaust holes arranged at intervals, the third exhaust channel comprises a plurality of third exhaust holes arranged at intervals, and a plurality of third exhaust holes and a plurality of second exhaust holes are arranged in a one-to-one sealing correspondence. The second exhaust passage and the third exhaust passage are provided with the through holes at a plurality of intervals, so that the damage to the structural strength of the box body and the beam body is avoided, and the effect of uniform exhaust can be achieved.

In some embodiments, the second exhaust passage includes a first slot and the third exhaust passage includes a second slot, the second slot being disposed in sealing correspondence with the first slot. The first notch and the second notch are of an integral groove structure, so that the exhaust capacity in unit time can be increased as much as possible, the condition that pressure release mechanisms of a plurality of batteries are sprayed simultaneously can be borne, and the safety coefficient is increased.

In some embodiments, a one-way exhaust valve is arranged on the box body, and the one-way exhaust valve is communicated with the second preset cavity. With the enhanced safety factor, when the high-temperature gas discharged from the first preset cavity into the second preset cavity exceeds a certain safety threshold, the one-way exhaust valve is opened to discharge the high-temperature gas.

In a second aspect, the present application provides an electrical device comprising the aforementioned battery pack; the battery pack is used for providing electric energy.

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 structural diagram of a vehicle according to an embodiment of the present disclosure;

fig. 2 is a perspective view of a battery pack provided in an embodiment of the present application;

FIG. 3 is a partial cross-sectional view of a battery pack provided in an embodiment of the present application;

FIG. 4 is an enlarged schematic view of the structure at A of FIG. 3;

FIG. 5 is an enlarged schematic view of the structure at B of FIG. 3;

FIG. 6 is a top view of a battery pack provided in an embodiment of the present application;

in the drawings, the drawings are not necessarily to scale.

Reference numerals in the specific embodiments are as follows:

1-vehicle, 2-battery pack, 3-controller, 4-motor;

10-a box body, 11-a sub-accommodating cavity, 12-a second preset cavity, 13-a third exhaust hole and 14-a second notch;

20-beam body, 21-first preset cavity, 22-first vent hole, 23-second vent hole and 24-first notch;

30-battery cell.

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.

The battery pack 2 is used in an electric vehicle as a driving energy source. In the prior art, a battery pack 2 comprises a plurality of battery modules, the battery modules are placed in a box 10, each battery module comprises a beam 20 and a plurality of battery cells 30 fixed on the beam 20, a pressure release mechanism is arranged on each battery cell 30, and in order to avoid explosion of a battery cell caused by unsmooth exhaust after the pressure release mechanism is opened after the battery cell 30 is in thermal runaway, exhaust spaces are required to be reserved in the battery pack 2, and occupy the arrangement space of the battery cells in the battery pack 2, so that the volume utilization rate is reduced.

In order to solve the above technical problems, the inventors have conducted intensive studies and devised a battery pack 2, in which a first preset cavity 21 is provided in a beam 20 and a second preset cavity 12 is provided in a box 10, the second preset cavity 12 may be communicated with the first preset cavity 21, an exhaust end of a pressure release mechanism extends into the first preset cavity 21, and an exhaust space of the battery pack 2 is formed in the first preset cavity 21 and the second preset cavity 12, thereby improving the volume utilization rate of the battery pack 2.

The present embodiment provides an electric device using the battery pack 2 as a power source, which may be, but is not limited to, a cellular phone, a portable device, a notebook computer, an electric car, a ship, a spacecraft, an electric toy, an electric tool, and the like, for example, a spacecraft including an airplane, a rocket, a space plane, and a spacecraft, and the like, an electric toy including a stationary or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, and an electric airplane toy, and the like, an electric tool including a metal cutting electric tool, a grinding electric tool, an assembling electric tool, and a railway electric tool, for example, an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact electric drill, a concrete vibrator, and an electric planer.

The battery described in the embodiments of the present application is not limited to the above-described power devices, but may be applied to all devices using batteries, but for simplicity of description, the following embodiments are described by taking an electric vehicle as an example.

For example, referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1 according to an embodiment of the present application, the vehicle 1 may be a fuel-oil vehicle, a gas-fired vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended range vehicle. The vehicle 1 may be provided inside with a battery pack 2, a controller 3, and a motor 4, the controller 3 being configured to control the battery 2 to supply power to the motor 4. For example, the battery 2 may be provided at the bottom or the head or the tail of the vehicle 1. The battery 2 may be used for power supply of the vehicle 1, for example, the battery pack 2 may be used as an operating power source for the vehicle 1, for circuitry of the vehicle 1, for example, for operating power requirements at start-up, navigation and operation of the vehicle 1. In another embodiment of the present application, the battery pack 2 may not only serve as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, instead of or in part instead of fuel oil or natural gas, to supply driving power to the vehicle 1.

According to some embodiments of the present application, referring to fig. 2 to 6, embodiments of the first aspect of the present application provide a battery pack 2, including a case 10, a beam 20 disposed in the case 10, and a battery cell 30, wherein:

referring to fig. 2, 3 and 6, the housing 10 has a receiving space therein, and in one possible embodiment, the housing 10 may include two parts, which are referred to herein as an upper housing and a lower housing, respectively, and the upper housing and the lower housing may be connected by fastening, bonding, or the like to form the receiving space. The plurality of battery cells 30 are connected in parallel or in series-parallel combination with each other and then placed in a case formed by connecting an upper case and a lower case. The shape of the upper case and the lower case may be determined according to the shape of the combination of the plurality of battery cells 30.

The number of the battery cells 30 and the connection condition between the battery cells 30 can be set according to the requirements to meet different power requirements. Specifically, the plurality of battery cells 30 may be connected in series or parallel or in series-parallel, and the series-parallel refers to a mixture of series connection and parallel connection, so that the battery pack 2 has a larger capacity or power. Alternatively, the plurality of battery cells 30 may be connected in series or parallel or series-parallel to form a battery module, and then connected in series or parallel or series-parallel to form the battery pack 2. That is, the plurality of battery cells 30 may be directly assembled into the battery pack 2, or may be assembled into a battery module first, and the battery module may be assembled into the battery pack 2.

The battery case 10 is used for protecting at least one battery cell 30, so as to reduce the influence of liquid or other foreign matters outside the battery pack 2 on the charge or discharge of the at least one battery cell 30. The battery cells 30 may be in a cylindrical shape, a flat shape, a rectangular shape, or other shapes, which are not limited in the embodiment of the present application. The packaging manner of the battery cell 30 includes, but is not limited to, a cylindrical battery cell 30, a square battery cell 30, a soft pack battery cell 30, and the like, which is not particularly limited in the embodiment of the present application.

In addition, the battery pack 2 may further include other structures, which will not be described in detail herein. For example, the battery pack 2 may further include a bus member. The bus bar is used to realize electrical connection between the plurality of battery cells 30, for example, parallel connection, serial connection or series-parallel connection between the plurality of battery cells 30. Specifically, the bus member may realize electrical connection between the battery cells 30 by connecting electrode terminals of the battery cells 30. Further, the bus member may be fixedly connected with the electrode terminals of the battery cells 30 by welding. Alternatively, the current collecting member may include a conductive mechanism through which the electric power generated from the plurality of battery cells 30 may be further drawn out through the case 10.

Referring to fig. 2, 3 and 6, the beam 20 is disposed in the accommodating space to divide the accommodating space into a plurality of accommodating sub-chambers 11, the accommodating sub-chambers 11 are used for accommodating a plurality of battery monomers 30, the beam 20 is used for enclosing the side walls of the accommodating sub-chambers 11, a plurality of battery monomers 30 are connected with the beam 20 to form a battery module, after the battery monomers 30 are bonded with the beam 20 to form a group, the structural strength of the beam 20 is also improved, in a feasible implementation mode, the plurality of beam 20 are disposed at intervals in parallel along one direction to form a plurality of accommodating sub-chambers 11 distributed along the direction in sequence, so that the volume of the accommodating sub-chambers 11 is larger, more battery monomers 30 can be accommodated, the grouping efficiency of the battery pack 2 is improved, the assembly flatness of the battery monomers 30 and the box 10 can be improved, the installation is facilitated, the structure and the installation mode of the beam 20 can be designed into various types, for example, a ' well ' structure ' formed by a plurality of cross beams and stringers which are mutually vertically lapped can be included, and the ' well ' is not limited herein.

In order to solve the technical problem that the exhaust space can reduce the volume utilization rate of the battery pack 2 in the prior art, a first preset cavity 21 is formed in the beam body 20, the first preset cavity 21 extends along the length direction of the beam body 20, reinforcing ribs can be arranged in the first preset cavity 21 to improve the overall strength of the beam body 20, the reduction of the overall strength of the beam body 20 caused by the first preset cavity 21 is avoided, and the weight of the beam body 20 can be reduced by the first preset cavity 21, so that the weight of the whole battery pack 2 is reduced.

Simultaneously, be equipped with the second on box 10 and predetermine cavity 12, the second is predetermine cavity 12 and is linked together with first predetermine cavity 21, be equipped with pressure release mechanism on the battery monomer 30, in this application embodiment, pressure release mechanism selects explosion-proof valve, the structure of explosion-proof valve can refer to the structure among the prior art, do not repeated here, pressure release mechanism's exhaust end extends into first predetermine cavity 21 in, the second is predetermine cavity 12 and is as the dilatation part of first predetermine cavity 21, first predetermine cavity 21 and second are predetermine cavity 12 and have formed the exhaust space of battery package 2 jointly, thereby need not to reserve out exhaust space in battery package 2, battery package 2 volume utilization ratio has been improved.

Referring to fig. 4, in the embodiment provided in the present application, a first exhaust channel is disposed on the beam 20, the first exhaust channel is communicated with the first preset cavity 21, and an exhaust end of the pressure release mechanism extends into the first preset cavity 21 from the first exhaust channel. After the thermal runaway of the battery monomer 30, the pressure release mechanism is opened, the sprayed high-temperature gas and the particulate matters are discharged into the first preset cavity 21 of the beam body 20 through the first exhaust channel, the temperature of the particulate matters is reduced through the first preset cavity 21 with a longer path, the risk that the sprayed matters cause high-pressure failure is reduced, meanwhile, the exhaust space in the battery pack 2 outside the beam body 20 can be saved, and the grouping efficiency and the energy density of the battery pack 2 are improved.

Referring to fig. 2 and 6, each accommodating sub-cavity 11 is provided with a plurality of groups of battery cells 30, each group of battery cells 30 extends along the length direction of the beam body 20, each group of battery cells 30 includes two battery cells 30, and the two battery cells 30 are stacked along the height direction of the beam body 20, so that the grouping efficiency of the battery cells 30 can be improved, and meanwhile, the up-down balanced exhaust effect in the first preset cavity 21 can be realized, so that those skilled in the art can know that the number and distribution of the battery cells 30 included in each group of battery cells 30 can be determined according to the actual design, and the limitation is not made herein.

Referring to fig. 4, the first exhaust channel includes a plurality of first exhaust holes 22 that the interval set up, avoid the beam body 20 to influence the normal opening of relief mechanism, every first exhaust hole 22 sets up corresponding to a battery monomer 30, a plurality of first exhaust holes 22 are along the length direction interval setting of beam body 20, can separate the relief mechanism on every battery monomer 30 alone like this, because can be to the first blowout high temperature gas in predetermineeing cavity 21 after the relief mechanism opens, if will not separate every battery monomer 30, there is the high temperature material to contact other battery monomers 30, initiate the thermal diffusion risk, this application is through setting up first exhaust channel into a plurality of mutually independent first exhaust holes 22, the blowout high temperature gas and the particulate matter after one battery monomer 30 out of control no longer contact with other battery monomers 30, thermal diffusion risk has been stopped.

In the embodiment provided by the application, the beam body 20 is provided with a second exhaust channel communicated with the first preset cavity 21, the box body 10 is provided with a third exhaust channel communicated with the second preset cavity 12, and the third exhaust channel and the second exhaust channel are correspondingly arranged in a sealing manner. The first preset cavity 21 and the second preset cavity 12 are communicated with the third exhaust channel through the second exhaust channel, so that the volume of the exhaust space can be further enlarged, and the condition of pressure release mechanisms of the plurality of battery cells 30 is prevented. When the high-temperature gas sprayed by the pressure release mechanism is flushed into the first preset cavity 21 in the beam body 20 after the battery unit 30 is out of control, part of the high-temperature gas is discharged along the length direction of the first preset cavity 21, and part of the high-temperature gas is sequentially discharged into the second preset cavity 12 through the second exhaust channel and the third exhaust channel.

Referring to fig. 4 and 5, the second preset cavity 12 is provided in the bottom wall and/or the side wall of the case 10, so that the second preset cavity 12 can be provided by using the existing structure of the case 10, and the second preset cavity 12 is prevented from being provided by adding components in the case 10, thereby improving the space utilization of the case 10.

Fig. 4 illustrates a case where the second preset cavity 12 is formed in the bottom wall of the case 10, in a possible embodiment, the bottom wall of the case 10 includes a bottom plate and a bottom guard plate, and a space formed between the bottom plate and the bottom guard plate is a safe space for preventing bottom ball striking, so that functions can be combined at this time, and the second preset cavity 12 is combined with the bottom ball striking space, so that the volume occupied by the case 10 can be reduced. When the high-temperature gas sprayed by the pressure release mechanism is flushed into the first preset cavity 21 in the beam body 20 after the battery unit 30 is out of control, part of the high-temperature gas is discharged along the length direction of the first preset cavity 21, and part of the high-temperature gas is discharged into the second preset cavity 12 in the bottom wall of the box body 10.

Fig. 5 shows a case where the second preset cavity 12 is formed on the side wall of the box 10, the beam 20 is communicated with the side wall of the box 10, and when the high-temperature gas sprayed by the pressure release mechanism is flushed into the first preset cavity 21 in the beam 20 after the battery unit 30 is out of control, the high-temperature gas is discharged along the length direction of the first preset cavity 21 and then enters the second preset cavity 12.

Those skilled in the art will appreciate that the second preset chamber 12 may also be simultaneously opened in the bottom wall and the side wall of the case 10, thereby maximizing the volume of the exhaust space.

In the embodiment that this application provided, the second exhaust passage includes the second exhaust hole 23 that a plurality of intervals set up, the third exhaust passage includes the third exhaust hole 13 that a plurality of intervals set up, one-to-one correspondence sets up between a plurality of third exhaust hole 13 and a plurality of second exhaust hole 23, set up second exhaust passage and third exhaust passage into a plurality of spaced through-holes, can avoid causing too big damage to the structural strength of box 10 and roof beam body 20 like this, also can play even exhaust effect simultaneously, refer to the fig. 4, in one possible embodiment, the second is predetermine cavity 12 and locate on the diapire of box 10, the bottom of roof beam body 20 is located to second exhaust hole 23, third exhaust hole 13 sets up on the diapire of box 10, second exhaust hole 23 extends along the length direction of roof beam body 20, third exhaust hole 13 and second exhaust hole 23 one-to-one correspond, when the high temperature gas that the gas release mechanism erupts out of battery monomer 30 is towards the first cavity 21 of predetermine in the roof beam body 20, part high temperature gas is along first cavity 21 length direction predetermines, the exhaust hole part is towards the second exhaust hole 13 in proper order to the second exhaust hole 13 in the second cavity 10.

In the embodiment provided by the application, the second exhaust passage includes first notch 24, and the third exhaust passage includes second notch 14, and sealed corresponding setting between second notch 14 and the first notch 24 is provided, and first notch 24 and second notch 14 are a whole cell type structure to can increase the displacement in the unit time as far as possible, can bear the condition that the pressure release mechanism of a plurality of battery monomers 30 erupts simultaneously, increased factor of safety. Referring to fig. 5, the second preset cavity 12 is disposed on a side wall of the box 10, the first notch 24 is disposed on a side wall of the beam 20 in a length direction, the second notch 14 is disposed on a side wall of the box 10, the first notch 24 and the second notch 14 are square grooves, and are tightly attached to each other, when the high-temperature gas sprayed by the pressure release mechanism is flushed into the first preset cavity 21 in the beam 20 after the battery unit 30 is out of control, the high-temperature gas is discharged along the length direction of the first preset cavity 21 and sequentially passes through the first notch 24 and the second notch 14 to be discharged into the second preset cavity 12 in the side wall of the box 10.

In the embodiment provided by the application, be equipped with one-way discharge valve (not shown) on the box 10, one-way discharge valve and second are predetermine cavity 12 intercommunication to reinforcing factor of safety, one-way discharge valve sets up on the diapire or the lateral wall of box 10, when the high temperature gas that is discharged to the second in predetermine cavity 12 in the follow first cavity 21 of predetermineeing exceeds certain safety threshold value after, one-way discharge valve opens the valve and discharges high temperature gas.

An embodiment of the second aspect of the present application provides an electric device, where the electric device includes the battery pack 2 described above, and the battery pack 2 is configured to provide electric energy to the electric device.

In the power consumption device provided in the technical solution of the embodiment of the present application, since the power consumption device includes the battery pack 2, the power consumption device has all the advantages of the battery pack 2. The power consuming device may be any of the devices or systems described above that employ the battery pack 2.

According to some embodiments of the present application, referring to fig. 3 to 6, the present application provides a battery pack 2, the inside roof beam body 20 that is equipped with a plurality of parallel intervals that set up of battery pack 2, the roof beam body 20 separates the accommodation space in the battery pack 2 into a plurality of accommodation subcavities, all be equipped with a plurality of battery monomer 30 in every accommodation subcavities 11, battery monomer 30 laminating sets up on roof beam body 20, a plurality of battery monomer 30 of group extend along the length direction of roof beam body 20, all include two battery monomer 30 in every battery monomer 30 of group, two battery monomer 30 pile up the setting along the direction of height of roof beam body 20.

A first preset cavity 21 is formed in the beam body 20, a plurality of first exhaust holes 22 extending along the length direction of the beam body 20 are formed in the side wall of the beam body 20, a pressure release mechanism is arranged on the battery cell 30, and the exhaust end of the pressure release mechanism extends into the first preset cavity 21 through the first exhaust holes 22.

The bottom wall of the box body 10 is internally provided with a second preset cavity 12, the bottom wall of the beam body 20 is provided with a second exhaust hole 23, the bottom wall of the box body 10 is provided with a third exhaust hole 13, the second exhaust hole 23 extends along the length direction of the beam body 20, the third exhaust hole 13 corresponds to the second exhaust hole 23 one by one, when high-temperature gas sprayed by the pressure release mechanism after the battery unit 30 is out of control rushes into the first preset cavity 21 in the beam body 20, part of high-temperature gas is discharged along the length direction of the first preset cavity 21, and part of gas sequentially passes through the second exhaust hole 23 and the third exhaust hole 13 to be discharged into the second preset cavity 12 in the bottom wall of the box body 10.

The second preset cavity 12 is also arranged in the side wall of the box body 10, the side wall of the beam body 20 in the length direction is provided with a first notch 24, the side wall of the box body 10 is provided with a second notch 14, the first notch 24 and the second notch 14 are square grooves, the first notch 24 and the second notch 14 are tightly attached to each other, when high-temperature gas sprayed by the pressure release mechanism is flushed into the first preset cavity 21 in the beam body 20 after the battery cell 30 is out of control, the high-temperature gas sequentially passes through the first notch 24 and the second notch 14 after being discharged in the length direction of the first preset cavity 21, and is discharged into the second preset cavity 12 in the side wall of the box body 10.

Through the above embodiment, the exhaust space of the battery pack 2 is formed in the first preset cavity 21 and the second preset cavity 12, thereby improving the volume utilization rate of the battery pack 2.

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 (10)

1. A battery pack, comprising:

the box body is internally provided with an accommodating space;

the beam body is arranged in the accommodating space to divide the accommodating space into a plurality of accommodating subchambers;

the battery monomers are arranged in the accommodating subchamber and are adhered to the Liang Tishang;

wherein:

the novel battery is characterized in that a first preset cavity is formed in the beam body, a second preset cavity is formed in the box body, the second preset cavity can be communicated with the first preset cavity, a pressure release mechanism is arranged on the battery cell, and the exhaust end of the pressure release mechanism extends into the first preset cavity.

2. The battery pack according to claim 1, wherein: the beam body is provided with a first exhaust channel which is communicated with the first preset cavity, and the exhaust end of the pressure relief mechanism extends into the first preset cavity from the first exhaust channel.

3. The battery pack according to claim 2, wherein: every the holding subcavity is interior all to be equipped with a plurality of groups battery monomer, a plurality of groups battery monomer is followed the length direction of the roof beam body extends, every group battery monomer is interior all to include two battery monomer, two battery monomer is followed the direction of height of the roof beam body stacks the setting.

4. A battery pack according to claim 3, wherein: the first exhaust channel comprises a plurality of first exhaust holes which are arranged at intervals, and each first exhaust hole is arranged corresponding to one battery cell.

5. The battery pack according to claim 1, wherein: the beam body is provided with a second exhaust channel communicated with the first preset cavity, the box body is provided with a third exhaust channel communicated with the second preset cavity, and the third exhaust channel and the second exhaust channel are correspondingly arranged in a sealing mode.

6. The battery pack according to claim 5, wherein: the second preset cavity is arranged in the bottom wall and/or the side wall of the box body.

7. The battery pack according to claim 6, wherein: the second exhaust channel comprises a plurality of second exhaust holes arranged at intervals, the third exhaust channel comprises a plurality of third exhaust holes arranged at intervals, and a plurality of third exhaust holes and a plurality of second exhaust holes are arranged in a one-to-one sealing correspondence.

8. The battery pack according to claim 6, wherein: the second exhaust passage comprises a first notch, the third exhaust passage comprises a second notch, and the second notch and the first notch are correspondingly arranged in a sealing manner.

9. The battery pack according to claim 1, wherein: the box body is provided with a one-way exhaust valve which is communicated with the second preset cavity.

10. An electrical device comprising a battery pack according to any one of claims 1-9; the battery pack is used for providing electric energy.

Images