CN218980307U - Battery box, battery assembly and vehicle - Google Patents

Abstract

The application provides a battery box, battery assembly and vehicle, the battery box includes: the box body is internally limited with an accommodating space; the fire extinguishing device is arranged on the box body, an accommodating cavity and a flow channel are defined in the fire extinguishing device, the accommodating cavity is positioned on the outer side of the box body and used for accommodating fire extinguishing agent, and the flow channel is respectively communicated with the accommodating cavity and the accommodating space. The battery box body occupies small space, and can extinguish fire in the battery box body.

Description

Battery box, battery assembly and vehicle

Technical Field

The present application relates to the field of battery technology, and more particularly, to a battery case, a battery assembly including the battery case, and a vehicle including the battery assembly.

Background

When the battery module in the battery box is out of control, the fire is easy to trigger. Fire extinguishers in the prior art are usually designed inside a battery box, occupy a larger space inside the battery box, have limited battery arrangement space, and are difficult to install. Or the fire extinguishing pipeline, the fire extinguishing tank body and the like are arranged in the whole vehicle, so that the space of the whole vehicle is greatly occupied.

Disclosure of Invention

An object of the application is to provide a new technical scheme of battery box, when can solving among the prior art battery box battery module out of control, occupy the great problem of battery package inner space to the fire extinguisher that battery module put out a fire.

It is a further object of the present application to provide a battery assembly including the above battery case.

It is yet another object of the present application to provide a vehicle.

According to an object of the present application, there is provided a battery case comprising: the box body is internally limited with an accommodating space; the fire extinguishing device is arranged on the box body, an accommodating cavity and a flow channel are defined in the fire extinguishing device, the accommodating cavity is positioned on the outer side of the box body and used for accommodating fire extinguishing agent, and the flow channel is respectively communicated with the accommodating cavity and the accommodating space.

Optionally, a part of the fire extinguishing device is located outside the tank body and has the accommodation chamber, and another part of the fire extinguishing device is located inside the tank body and has the flow passage.

Optionally, the battery box further includes: and the first sealing piece is arranged between the box body and the fire extinguishing device so as to realize sealing connection between the box body and the fire extinguishing device.

Optionally, the pressure in the accommodating cavity is greater than the pressure in the accommodating space, and the battery box further includes: and a second seal member movably mounted to the flow passage and capable of opening or closing the flow passage.

Optionally, the battery box further includes: and the limiting piece is positioned in the flow passage and can limit the position of the second sealing piece so that the second sealing piece can open or close the flow passage.

Optionally, the limiting piece comprises a step surface formed in the flow channel and a temperature sensing piece mounted on the flow channel, and the second sealing piece is clamped between the step surface and the temperature sensing piece; when the temperature of the temperature sensing piece is lower than a preset temperature, the temperature sensing piece is not deformed, and when the temperature of the temperature sensing piece reaches the preset temperature, the temperature sensing piece is deformed.

Optionally, the flow channel of the battery box includes: the first end of the first channel is communicated with the accommodating cavity, and the inner wall surface of the first channel is provided with the step surface; the first end of the second channel is communicated with the second end of the first channel, the second end of the second channel is communicated with the accommodating space, the radial size of the first end of the second channel is larger than that of the second end of the first channel, and the temperature sensing piece is arranged in the second channel.

Optionally, the fire extinguishing device is further provided with a second installation through hole communicating with the second channel, and the fire extinguishing device further comprises: the third sealing piece is detachably arranged in the second installation through hole, the first end of the temperature sensing piece is connected with the third sealing piece, and the second end of the temperature sensing piece is connected with the second sealing piece.

Optionally, the temperature sensing piece is a temperature sensing glass bubble.

Optionally, the battery box further includes: the detection device is used for detecting the environmental data in the accommodating space; and the heating piece is respectively connected with the detection device and the temperature sensing piece, so as to heat the temperature sensing piece when the environmental data reach a preset range.

Optionally, the battery box further includes: and the alarm control component is connected with the detection device and used for sending an alarm signal when the environmental data obtained by the detection device reach a preset range.

Optionally, the box body is provided with a first installation through hole communicated with the accommodating space, the fire extinguishing device is installed in the first installation through hole, the part with the accommodating cavity on the fire extinguishing device is located at the outer side of the box body, and the part with the runner on the fire extinguishing device stretches into the first installation through hole.

Optionally, the fire extinguishing device is a cylindrical member, and the portion of the fire extinguishing device having the receiving chamber has a radial dimension greater than the radial dimension of the portion of the fire extinguishing device having the flow passage.

Optionally, the fire extinguishing device is provided with an injection port communicated with the accommodating cavity, so as to be used for injecting the fire extinguishing agent into the accommodating cavity.

Optionally, a pipeline is arranged in the box body, and the pipeline is communicated with the flow channel.

According to still another object of the present application, there is provided a battery assembly including: the battery box body is any one of the battery box bodies; and the battery module is arranged in the accommodating space.

Optionally, a part of the fire extinguishing device is installed at the outer side of the case body of the battery case, and the battery assembly further includes: the distribution box and the fire extinguishing device are arranged on the same surface of the box body.

Optionally, a third mounting through hole communicated with the accommodating space is further formed in the box body, the battery box body further comprises a waterproof ventilation valve, and the waterproof ventilation valve is mounted in the third mounting through hole; wherein the tank body has a first region and a second region, the first region and the second region being distributed along a diagonal of the tank body; or, the first area is disposed on a first surface on the tank body, the second area is disposed on a second surface on the tank body, and the first surface is disposed opposite to the second surface; wherein the waterproof ventilation valve is installed in the first area, and the fire extinguishing device is installed in the second area.

According to yet another object of the present application, there is provided a vehicle including the battery assembly as described in any one of the above.

The battery box body of the embodiment of the application combines with the fire extinguishing device through adopting the box body, can realize the integration of the box body and the fire extinguishing device, has the advantage of high volume utilization rate, reduces the volume occupied by the fire extinguishing device in the battery box body, and provides possibility for improving the battery capacity. Meanwhile, when the battery box body is applied to a vehicle, the whole vehicle does not need to be provided with fire extinguishing pipelines and other fire extinguishing structures, and the fire extinguishing device can be arranged on the box body and can start fire extinguishing operation inside the box body when needed.

Other features of the present application and its advantages will become apparent from the following detailed description of exemplary embodiments of the present application, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.

FIG. 1 is a schematic cross-sectional view of a fire suppression apparatus according to one embodiment of the present application;

FIG. 2 is a schematic structural view of a fire extinguishing apparatus according to an embodiment of the present application;

FIG. 3 is an exploded view of a fire suppression apparatus according to one embodiment of the present application;

fig. 4 is a schematic structural view of a battery case according to an embodiment of the present application;

fig. 5 is a partial internal structure schematic view of a battery case according to an embodiment of the present application;

FIG. 6 is an enlarged view of area A, circled in FIG. 5;

fig. 7 is a partial internal structure schematic view of a battery case according to an embodiment of the present application;

fig. 8 is an enlarged view of region B circled in fig. 7.

Reference numerals

A battery case 1000;

a case body 100; an accommodating space 101; a first mounting through hole 102; a conduit 103; a fire suppressant outlet portion 104; a harness plug 105;

a fire extinguishing device 200;

a housing 210;

a first housing 211; a housing chamber 2111;

a second housing 212; a second mounting through hole 2122;

a flow channel 213;

a first passageway 2131; a step surface 2132; a second passageway 2133; an injection port 2134;

a second seal 220; a fourth seal 230; a third seal 240; a first component 250; a heating member 260; a second component 270; an air pressure sensor 280; a temperature sensing member 290;

a first seal 300;

a waterproof ventilation valve 400; a power distribution box 500.

Detailed Description

Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

The battery case 1000 according to the embodiment of the present application will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 8, a battery case 1000 according to an embodiment of the present application includes a case body 100 and a fire extinguishing device 200.

Specifically, the housing space 101 is defined in the housing body 100, the fire extinguishing apparatus 200 is mounted to the housing body 100, the housing chamber 2111 and the flow passage 213 are defined in the fire extinguishing apparatus 200, the housing chamber 2111 is located outside the housing body 100, the housing chamber 2111 is used for housing the fire extinguishing agent, and the flow passage 213 communicates with the housing chamber 2111 and the housing space 101, respectively.

In other words, the battery case 1000 according to the embodiment of the present application is mainly composed of the case body 100 and the fire extinguishing device 200, wherein the case body 100 is formed with the accommodating space 101 therein, the battery module can be mounted in the accommodating space 101, and the case body 100 can play a role in accommodation.

A fire extinguishing apparatus 200 may be mounted on the tank body 100, and a portion of the fire extinguishing apparatus 200 is located outside the tank body 100, and a housing chamber 2111 is defined in the portion of the fire extinguishing apparatus 200. A further part of the fire extinguishing apparatus 200 defines a flow passage 213, a first end of the flow passage 213 being in communication with the receiving space 101, and a second end of the flow passage 213 being in communication with the receiving chamber 2111. In the present embodiment, the relative positional relationship between the flow path 213 and the tank body 100 is not limited, that is, a further part of the fire extinguishing apparatus 200 may protrude from the inner wall surface of the tank body 100, or be flush with the inner wall surface of the tank body 100, or be located inside the inner wall surface of the tank body 100 and have a length smaller than the thickness of the inner wall surface of the tank body 100, and the like, and is not limited herein.

In addition, the flow channel 213 may be in communication with the accommodating space 101, or the flow channel 213 may be used to communicate with the accommodating space 101 when a predetermined condition is satisfied.

Also, the accommodating chamber 2111 may be filled with the fire extinguishing agent, that is, the inner chamber of the fire extinguishing apparatus 200 may be divided into the accommodating chamber 2111 and the flow passage 213, wherein the accommodating chamber 2111 may be filled with the fire extinguishing agent, and when the condition is satisfied, the fire extinguishing agent in the accommodating chamber 2111 may pass through the flow passage 213 into the accommodating space 101.

By attaching a part of the fire extinguishing apparatus 200 to the outside of the tank body 100, the fire extinguishing apparatus 200 is prevented from occupying the volume of the housing space 101 in the tank body 100.

From this, according to the battery box 1000 of this application through adopting case body 100 and extinguishing device 200 to combine, can realize the integration of case body 100 and extinguishing device 200, have the advantage that volume utilization is high, reduced the volume that extinguishing device 200 occupy in the battery box 1000, for improving battery capacity and provide the possibility. Meanwhile, when the battery box 1000 is applied to a vehicle, the whole vehicle does not need to arrange fire extinguishing pipelines and other fire extinguishing structures, the fire extinguishing device 200 can be arranged on the box body 100, fire extinguishing operation can be started inside the box body 100 when needed, and the fire extinguishing device has the advantage that the occupied space of the fire extinguishing device 200 is small no matter whether the battery box 1000 is inside or outside.

According to one embodiment of the present application, as shown in fig. 4 to 6, a part of the fire extinguishing apparatus 200 is located at the outside of the tank body 100 and has the accommodation chamber 2111, and another part of the fire extinguishing apparatus 200 is located at the inside of the tank body 100 and has the flow passage 213.

In other words, the fire extinguishing apparatus 200 includes a housing 210 having an inner cavity within the housing 210, and for convenience of explanation, a portion of the fire extinguishing apparatus 200 may be defined as a first housing 211 and another portion of the fire extinguishing apparatus 200 may be defined as a second housing 212.

That is, the housing 210 includes a first housing 211 and a second housing 212, the first housing 211 having a receiving chamber 2111 defined therein, at least a portion of the first housing 211 being located outside the tank body 100, the second housing 212 being connected to the first housing 211 and located on a side of the first housing 211 adjacent to the inner chamber, the second housing 212 having a flow passage 213 defined therein.

In the present embodiment, by disposing the second housing 211 outside the case body 100, at least a portion of the second housing 212 is mounted in the first mounting through hole 102, facilitating the mounting of the outer case 210, and reducing the size occupying the internal space of the case body 100.

It should be noted that the housing 210 of the fire extinguishing apparatus 200 may be an integral part, i.e. the housing 210 of the fire extinguishing apparatus 200 is an integral part.

In some embodiments of the present application, as shown in fig. 1, the battery case 1000 further includes: the first sealing member 300, the first sealing member 300 is installed between the tank body 100 and the fire extinguishing apparatus 200, so that the tank body 100 and the fire extinguishing apparatus 200 are hermetically connected.

That is, the battery case 1000 further includes a first seal 300, the first seal 300 being provided between the case body 100 and the outer case 210 for closing a gap between the case body 100 and the outer case 210. Wherein the first seal 300 may comprise a gasket. The fire extinguishing device 200 can be sealed with the box body 100 through the first sealing member 300, so that the original sealing protection performance of the box body 100 is not easily damaged, and the sealing protection performance of the box body 100 is not easily failed.

That is, in the present embodiment, by using the first sealing member 300, the fire extinguishing apparatus 200 is provided with a sealing structure, and it is not easy to change the sealing protection level of the whole battery case 1000.

Optionally, the first housing 211 is provided with an annular groove near one side of the outer surface of the case body 100, and the first sealing member 300 may be embedded in the annular groove, so that the first sealing member 300 can be installed without adding other structures.

According to one embodiment of the present application, the pressure in the accommodating chamber 2111 is greater than the pressure in the accommodating space 101, that is, the fire extinguishing agent may be stored under micro pressure, so that the fire extinguishing agent can be guaranteed to be flushed into the accommodating chamber 2111 through the flow passage 213 during fire extinguishing.

Optionally, a gas pressure sensor 280 is provided on the outside of the second housing 212, through which gas pressure sensor 280 can be used to monitor the gas pressure within the accommodation chamber 2111. The air pressure sensor 280 may be mounted to the second housing 212 by screwing or the like.

In some embodiments of the present application, the battery case 1000 further includes:

and a second sealing member 220, the second sealing member 220 being movably mounted to the flow passage 213 and being capable of opening or closing the flow passage 213.

That is, a second seal 220 may be provided between the accommodation chamber 2111 and the flow passage 213, the second seal 220 being capable of opening or closing the flow passage 213, and communication or disconnection between the accommodation chamber 2111 and the flow passage 213 may be achieved by control of the state of the second seal 220. In this embodiment, the second sealing member 2114 may include a movable member or may be broken under a predetermined condition, and the like, which is not limited herein. Wherein the second seal 220 may be a sealing plug.

According to one embodiment of the present application, the battery case 1000 further includes a stopper located at the flow channel 213, the stopper being capable of restricting the position of the second sealing member 220 such that the second sealing member 220 opens or closes the flow channel 213.

For example, a movable sealing plug is installed in the flow passage 213, and the position of the sealing plug can be defined by a stopper also located in the flow passage 213, thereby controlling the sealing plug to open the flow passage 213 or to close the flow passage 213. In the present embodiment, the limitation of the position of the second seal 220 can be achieved by employing a stopper.

In some embodiments of the present application, as shown in fig. 1, the stopper includes a stepped surface 2132 formed in the flow passage 213 and a temperature sensing element 290 mounted to the flow passage 213, and the second sealing element 220 is interposed between the stepped surface 2132 and the temperature sensing element 290; when the temperature of the temperature sensing element 290 is lower than the preset temperature, the temperature sensing element 290 is not deformed, and when the temperature of the temperature sensing element 290 reaches the preset temperature, the temperature sensing element 290 is deformed. The temperature sensor 290 is not limited to a temperature-sensitive glass bulb, and may be a temperature-sensitive deformable member.

That is, the limiting member includes a temperature sensing member 290 and a step surface 2132, and the temperature sensing member 290 and the step surface 2132 are disposed at intervals and are both located in the flow channel 213. At this time, the second seal 220 may be interposed between the temperature sensing member 290 and the stepped surface 2132. For example, the left side of the sealing plug is limited by the stepped surface 2132 and the right side of the sealing plug is limited by the temperature sensing element 290.

For example, when the temperature sensor 290 is a temperature-sensitive glass bulb, the temperature sensor 290 is switched from the first state to the second state when the temperature of the temperature sensor 290 reaches a predetermined temperature, and the temperature sensor 290 is broken. That is, when the temperature sensing element 290 does not reach the preset temperature, the temperature sensing element 290 is complete, the communication between the flow channel 213 and the accommodating cavity 2111 can be isolated by the temperature sensing element 290, and when the temperature sensing element 290 reaches the preset temperature, the temperature sensing element 290 can be damaged, so that the communication between the flow channel 213 and the accommodating cavity 2111 is realized, and the fire extinguishing agent can pass through the flow channel 213 and enter the accommodating space 101. When the sealing plug is interposed between the temperature sensing element 290 and the stepped surface 2132, the temperature sensing element 290 is not broken, and is in the first state.

According to one embodiment of the present application, as shown in fig. 1, the flow channel 213 includes a first channel 2131 and a second channel 2133, a first end of the first channel 2131 is communicated with the accommodating cavity 2111, an inner wall surface of the first channel 2131 is provided with a step surface 2132, a first end of the second channel 2133 is communicated with a second end of the first channel 2131, a second end of the second channel 2133 is communicated with the accommodating space 101, and a radial dimension of the first end of the second channel 2133 is larger than a radial dimension of the second end of the first channel 2131, and the temperature sensing element 290 is mounted on the second channel 2133.

In other words, when the temperature sensing element 290 is in the first state, both sides of the sealing plug may be limited by the temperature sensing element 290 and the step surface 2132, and the sealing plug may be supported by the temperature sensing element 290 and the step surface 2132. That is, when the temperature sensing element 290 is in the first state, the tail end of the first passageway 2131 may be sealed by a sealing plug. When the temperature sensing element 290 is in the second state, the temperature sensing element 290 is damaged, so that one side of the sealing plug is out of support, and moves towards the second channel 2133, and the first channel 2131 can be opened. In this embodiment, the sealing plug may be opened by the impact of the fire extinguishing agent in the housing chamber 2111, or may be opened by the action of an elastic member, and the like, and is not limited thereto.

Alternatively, when the holding chamber 2111 is filled with the fire extinguishing agent stored by micro pressure, and the temperature sensing member 290 is switched to the second state, the fire extinguishing agent may have sufficient pressure to rupture the sealing plug.

According to one embodiment of the present application, as shown in fig. 1, the fire extinguishing apparatus 200 is further provided with a second mounting through hole 2122 communicating with the second channel 2133, the fire extinguishing apparatus 200 further includes a third sealing member 240, the third sealing member 240 is detachably provided at the second mounting through hole 2122, a first end of the temperature sensing member 290 is connected to the third sealing member 240, and a second end of the temperature sensing member 290 is connected to the second sealing member 220. For example, the support of both sides of the temperature sensing member 290 may be achieved by employing the third sealing member 240 and the sealing plug.

That is, the temperature sensing member 290 may be supported by the third sealing member 240 and the sealing plug, respectively. For example, the head end of the temperature sensing element 290 may be supported by a sealing plug, and the tail end of the temperature sensing element 290 may be supported by a third sealing element 249. Optionally, when the temperature sensing element 290 is in the second state, the sealing plug loses support, and at this time, the micro-pressure fire extinguishing agent can wash away the sealing plug, and the fire extinguishing agent can enter the box body 100 through the flow channel 213, so as to extinguish the fire of the battery module in the box body 100. Optionally, the third seal 240 is threadably secured to the housing 210, such as at the trailing end of the second housing 212.

In addition, by detachably disposing the third sealing member 240 in the second mounting through hole 2122, the temperature sensing member 290 is easily replaced, and when the fire extinguishing apparatus 100 is used once, the third sealing member 240 is broken in the temperature sensing member 290, and the temperature sensing member 290 and the second sealing member 220 at the other end can be removed, and a new third sealing member 240 can be assembled with the second sealing member 220 and can be installed from the third sealing member 240.

In some embodiments of the present application, the temperature sensing element 290 is a temperature sensing glass bulb, which can be broken when the temperature reaches a preset temperature, and is easy to set.

According to an embodiment of the present application, the battery box 1000 further includes a detecting device and a heating element 260, the detecting device is used for detecting environmental data in the accommodating space 101, and the heating element 260 is respectively connected with the detecting device and the temperature sensing element 290, so as to heat the temperature sensing element 290 when the environmental data reaches a preset range.

In other words, the environmental data in the accommodating space 101 may be acquired by the detection device, and when the acquired environmental data reaches the preset range, the heating element 260 may heat the temperature sensing element 290, so that the temperature sensing element 290 is switched from the first state to the second state.

In the present embodiment, by employing the detection device in cooperation with the heating member 260, the automation control can be realized, and the safety performance can be further improved.

In some embodiments of the present application, the battery case 1000 further includes: and the alarm control component is connected with the detection device and used for sending an alarm signal when the environmental data obtained by the detection device reach a preset range. That is, the alarm control component can be matched with the detection device to realize timely alarm.

Optionally, as shown in fig. 3, the detection device includes at least one of a first component 250 and a second component 270. The setting may be performed according to the number of parameters to be detected, for example, when the number of parameters to be detected is large, the first component 250 and the second component 270 may be used in cooperation.

Specifically, the first component 250 is disposed in the case body 100, and is capable of detecting environmental data in the accommodating space 101, and the heating element 260 is connected to the first component 250 and the temperature sensing element 290, respectively, so as to heat the temperature sensing element 290 when the environmental data obtained by the first component 250 reaches a preset range. The first component 250 can effectively monitor the thermal runaway state of the battery module inside the case body 100, for example, the first component 250 can employ various sensors.

Optionally, the heating element 260 may be a wire harness, which can reduce the occupied space, the first component 250 may be a first PCB board, and the first component 250 may supply power to a starting wire harness connected with the first component, and the starting wire harness heats the temperature sensing element 290, so that the temperature sensing element 290 is switched to the second state to be damaged. For example, the glass bubbles are heated to cause the glass bubbles to break.

The second component 270 is disposed on the case body 100, and is capable of detecting environmental data in the accommodating space 101, and the alarm control component is connected with the second component 270, so as to send an alarm signal when the environmental data obtained by the second component 270 reaches a preset range.

As shown in fig. 3, the second component 270 may include a second PCB board, where the second component 270 is matched with an alarm control component, and may be used as a monitoring, alarm and control unit, and may be selectively designed with a CO concentration sensor, a temperature sensor, an air pressure sensor, a smoke sensor, a VOC gas concentration sensor, an alarm control circuit, and the like. The second component 270 CAN be used for monitoring the information such as the concentration of combustible gas, the concentration of VOC gas, the ambient temperature, the air pressure, the smog and the like in the box body 100, when the battery module in the box body 100 is out of control, a plurality of sensor values CAN be triggered to reach a threshold value, and the alarm information CAN be transmitted to the whole vehicle instrument through the CAN line to inform drivers and passengers of evacuating the vehicle.

That is, the second component 270 may be designed with a fire alarm unit such as a temperature sensor, a CO sensor, a gas pressure sensor, a VOC sensor, a smoke sensor, etc., and the second component 270 may be integrated on the fire extinguishing apparatus 200. The alarm control component can be used as an alarm control unit, when the second component 270 monitors an alarm signal, the alarm signal can be sent to the whole vehicle controller to remind drivers and passengers to evacuate, and meanwhile, the fire extinguishing device 200 is controlled to start fire extinguishing, so that the aim of eliminating or inhibiting thermal runaway of the battery is achieved.

Alternatively, the first and second components 250 and 270 may be designed with a fire monitoring alarm unit, a fire extinguishing start control unit, an air pressure monitoring unit, etc. The first component 250 and the second component 270 may be fixed to the inner nut post of the housing 210 using a set screw, a set bolt, or the like, and the nut post has a threaded hole therein.

According to one embodiment of the present application, as shown in fig. 6, a first installation through hole 102 communicating with the accommodating space 101 is provided in the case body 100, the fire extinguishing apparatus 200 is installed in the first installation through hole 102, a portion of the fire extinguishing apparatus 200 having the accommodating chamber 2111 is located at the outside of the case body 100, and a portion of the fire extinguishing apparatus 200 having the flow passage 213 extends into the first installation through hole 102.

That is, the case body 100 may be provided with a first mounting through hole 102 penetrating in the wall thickness direction, and the first mounting through hole 102 may communicate with the housing space 101. The fire extinguishing apparatus 200 may be mounted on the tank body 100 through the first mounting through hole 102, realizing an integrated design of the tank body 100 and the fire extinguishing apparatus 200.

In addition, at least a portion of the second housing 212 may be mounted to the first mounting hole, that is, the first housing 211 is located at the outer side of the case body 100, and one end of the second housing 212 is connected to the first housing 211 after passing through the first mounting hole 102, and the other end of the second housing 212 extends into the accommodating space 101.

In some embodiments of the present application, as shown in fig. 6, the fire extinguishing apparatus 200 is a cylindrical member, and the portion of the fire extinguishing apparatus 200 having the accommodation chamber 2111 has a radial dimension greater than the portion of the fire extinguishing apparatus 200 having the flow passage 213. That is, the first housing 211 and the second housing 212 are respectively cylindrical members, and the outer diameter of the first housing 211 is larger than that of the second housing 212, so that the volume of the filled fire extinguishing agent is conveniently enlarged on the one hand; in yet another aspect, the footprint of the second housing 212 is reduced; in yet another aspect, the size of the first mounting via 102 is advantageously reduced, improving the sealing effect.

According to one embodiment of the present application, the fire extinguishing apparatus 200 is provided with an injection port 2134 in communication with the receiving chamber 2111 for injecting a fire extinguishing agent into the receiving chamber 2111. That is, the second housing 212 is provided with a through-hole injection port 2134, and in this embodiment, the injection port 2134 is provided to fill the storage chamber 2111 with the fire extinguishing agent.

Optionally, the fire extinguishing apparatus 200 of the present application further includes a fire extinguishing agent outlet portion 104, and the passages in the fire extinguishing agent outlet portion 104 may be respectively communicated with the pipe 103 and the flow passage 213, and the fire extinguishing agent in the flow passage 213 may enter the pipe 103 through the fire extinguishing agent outlet portion 104; or may be respectively communicated with the accommodating space 101 and the flow channel 213, and the fire extinguishing agent in the flow channel 213 may enter the accommodating space 101 through the fire extinguishing agent outlet 104. The fire suppression agent outlet portion 104 may be mounted on the second housing 212.

Optionally, the fire suppression apparatus 200 of the present application further includes a wire harness plug 105, and the wire harness plug 105 may be used to introduce a wire harness, which may be the heating element 260, and to effect a seal with the housing.

Optionally, the fire extinguishing device 200 further comprises a fourth sealing member 230, the fourth sealing member 230 being movably arranged at the injection opening 2134, the fourth sealing member 230 being capable of opening or closing the injection opening 2134.

According to one embodiment of the present application, as shown in fig. 5, a pipe 103 is provided in the case body 100, and the pipe 103 is in communication with the flow channel 213, that is, an output port of the fire extinguishing agent may be connected to the pipe 103 in the case body 100, so that the fire extinguishing agent may be delivered to the surface of the battery module, thereby achieving rapid fire extinguishing.

The operation of the fire extinguishing apparatus 200 according to the present application will be described with reference to specific embodiments.

The fire monitoring alarm unit, the fire extinguishing starting control unit, the air pressure monitoring unit and the like can be designed and used for monitoring the information such as the concentration, the temperature, the air pressure, the smoke and the like of the combustible gas in the battery box. When the thermal runaway alarm occurs in the box body 100, the control unit is started to act on the glass foam, so that the glass foam is broken, the sealing plug at the tail end of the flow channel pops up, and the extinguishing agent in the fire extinguishing device 200 enters the box body 100, so that the temperature reduction and fire extinguishing of the battery module in the box body 100 can be effectively implemented, the purposes of inhibiting and extinguishing the thermal runaway of the battery module at an early stage and extinguishing the fire in the battery box body 1000 are achieved.

The application also provides a battery assembly, which comprises a battery box 1000 and a battery module, wherein the battery box 1000 can adopt the battery box 1000 of any embodiment, and the battery module can be installed in the accommodating space 101. The battery assembly according to the embodiment of the application also has the advantages because the battery case 1000 according to the embodiment of the application improves the safety performance and reduces the occupied volume, and is not described herein.

According to one embodiment of the present application, as shown in fig. 4, a part of the fire extinguishing device 200 is installed at the outside of the case body 100 of the battery case 1000, and the battery assembly further includes a distribution box 500, and the distribution box 500 is installed at the same surface of the case body 100 as the fire extinguishing device 200. In this embodiment, by limiting the distribution box 500 to be disposed on the same surface as the fire extinguishing apparatus 200, an external installation space can be saved, and the disassembly is facilitated.

According to one embodiment of the present application, as shown in fig. 4, the case body 100 is further provided with a third installation through hole communicating with the accommodating space 101, and the battery case 1000 further includes a waterproof ventilation valve 400, where the waterproof ventilation valve 400 is installed in the third installation through hole. That is, the safety performance of the battery case 1000 may be further improved by installing the waterproof and ventilation valve 400.

In some embodiments of the present application, as shown in fig. 4, the tank body 100 has a first region and a second region, which are distributed along a diagonal line of the tank body 100; alternatively, the first region is disposed on a first surface on the tank body 100, the second region is disposed on a second surface on the tank body 100, and the first surface is disposed opposite to the second surface; wherein the waterproof and breathable valve 400 is installed in a first area and the fire-extinguishing device 200 is installed in a second area.

For example, the fire extinguishing apparatus 200 is installed in front of the case body 100, the waterproof ventilation valve 400 is disposed at the tail of the case body 100, and when the fire extinguishing agent in the fire extinguishing apparatus 200 is sprayed out, the waterproof ventilation valve 400 at the tail end can be opened due to the increase of the internal pressure of the case body 100, so that the case body 100 can be prevented from being broken due to the excessive pressure inside the case body 100.

In this embodiment, the circulation of the sprayed fluid is facilitated by installing the waterproof ventilation valve 400 at the opposite or opposite side of the fire extinguishing apparatus 200.

The application also provides a vehicle comprising the battery assembly of any of the above embodiments. Since the battery assembly according to the embodiment of the present application improves the safety performance, the vehicle according to the embodiment of the present application also has the above advantages, and will not be described in detail herein.

Although specific embodiments of the present application have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present application. The scope of the application is defined by the appended claims.

Claims (19)

1. A battery box, comprising:

the box body is internally limited with an accommodating space;

the fire extinguishing device is arranged on the box body, an accommodating cavity and a flow channel are defined in the fire extinguishing device, the accommodating cavity is positioned on the outer side of the box body and used for accommodating fire extinguishing agent, and the flow channel is respectively communicated with the accommodating cavity and the accommodating space.

2. The battery box of claim 1, wherein a portion of the fire suppression device is located outside the box body and has the receiving cavity, and a further portion of the fire suppression device is located inside the box body and has the flow passage.

3. The battery case according to claim 1, further comprising:

and the first sealing piece is arranged between the box body and the fire extinguishing device so as to realize sealing connection between the box body and the fire extinguishing device.

4. The battery box of claim 1, wherein the pressure in the receiving cavity is greater than the pressure in the receiving space, the battery box further comprising:

and a second seal member movably mounted to the flow passage and capable of opening or closing the flow passage.

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

and the limiting piece is positioned in the flow passage and can limit the position of the second sealing piece so that the second sealing piece can open or close the flow passage.

6. The battery box according to claim 5, wherein the stopper includes a step surface formed in the flow passage and a temperature sensing member mounted to the flow passage, the second sealing member being interposed between the step surface and the temperature sensing member; when the temperature of the temperature sensing piece is lower than a preset temperature, the temperature sensing piece is not deformed, and when the temperature of the temperature sensing piece reaches the preset temperature, the temperature sensing piece is deformed.

7. The battery box of claim 6, wherein the flow channel comprises:

the first end of the first channel is communicated with the accommodating cavity, and the inner wall surface of the first channel is provided with the step surface;

the first end of the second channel is communicated with the second end of the first channel, the second end of the second channel is communicated with the accommodating space, the radial size of the first end of the second channel is larger than that of the second end of the first channel, and the temperature sensing piece is arranged in the second channel.

8. The battery box of claim 7, wherein the fire extinguishing device is further provided with a second mounting through hole in communication with the second passage, the fire extinguishing device further comprising:

the third sealing piece is detachably arranged in the second installation through hole, the first end of the temperature sensing piece is connected with the third sealing piece, and the second end of the temperature sensing piece is connected with the second sealing piece.

9. The battery box of claim 6, wherein the temperature sensing element is a temperature sensing glass bulb.

10. The battery case according to claim 6, further comprising:

the detection device is used for detecting the environmental data in the accommodating space;

and the heating piece is respectively connected with the detection device and the temperature sensing piece, so as to heat the temperature sensing piece when the environmental data reach a preset range.

11. The battery case according to claim 10, further comprising:

and the alarm control component is connected with the detection device and used for sending an alarm signal when the environmental data obtained by the detection device reach a preset range.

12. The battery box body according to claim 1, wherein a first installation through hole communicated with the accommodating space is formed in the box body, the fire extinguishing device is installed in the first installation through hole, the portion, provided with the accommodating cavity, of the fire extinguishing device is located on the outer side of the box body, and the portion, provided with the flow channel, of the fire extinguishing device extends into the first installation through hole.

13. The battery box according to claim 12, wherein the fire extinguishing device is a cylindrical member, and a radial dimension of a portion of the fire extinguishing device having the receiving chamber is larger than a radial dimension of a portion of the fire extinguishing device having the flow passage.

14. The battery box according to claim 1, wherein the fire extinguishing device is provided with an injection port communicated with the accommodating cavity for injecting fire extinguishing agent into the accommodating cavity.

15. The battery box of claim 1, wherein a conduit is provided within the box body, the conduit being in communication with the flow passage.

16. A battery assembly, comprising:

a battery box according to any one of claims 1 to 14;

and the battery module is arranged in the accommodating space.

17. The battery assembly of claim 16, wherein a portion of the fire suppression device is mounted outside of the housing body of the battery housing, the battery assembly further comprising:

the distribution box and the fire extinguishing device are arranged on the same surface of the box body.

18. The battery assembly of claim 16, wherein the case body is further provided with a third mounting through hole communicated with the accommodating space, and the battery case body further comprises a waterproof ventilation valve mounted in the third mounting through hole;

wherein the tank body has a first region and a second region, the first region and the second region being distributed along a diagonal of the tank body; or, the first area is disposed on a first surface on the tank body, the second area is disposed on a second surface on the tank body, and the first surface is disposed opposite to the second surface; wherein the waterproof ventilation valve is installed in the first area, and the fire extinguishing device is installed in the second area.

19. A vehicle comprising a battery assembly as claimed in any one of claims 16 to 18.

Images