CN217009393U - Battery pack and vehicle with same - Google Patents

Abstract

The utility model discloses a battery pack and a vehicle with the same, wherein the battery pack comprises: the battery module is arranged in the accommodating cavity and comprises a plurality of single batteries; the fire extinguishing assembly comprises a plurality of fire extinguishing pipes for storing fire extinguishing media, the fire extinguishing pipes correspond to the battery modules one by one, the fire extinguishing pipes are mutually independent and are arranged at intervals, at least parts of the fire extinguishing pipes are located in the containing cavity, the fire extinguishing pipes are arranged opposite to the battery modules, and the fire extinguishing pipes are suitable for being burnt through and releasing the fire extinguishing media when any one battery cell is out of control due to heat. According to the battery pack, when any single battery is out of control due to heat and the corresponding fire extinguishing pipe is burnt through, the fire extinguishing effect of other fire extinguishing pipes on other battery modules cannot be influenced, and the burnt fire extinguishing pipe only needs to be replaced, so that later maintenance is facilitated.

Description

Battery pack and vehicle with same

Technical Field

The utility model relates to the technical field of battery packs, in particular to a battery pack and a vehicle with the same.

Background

In the battery pack in the related art, after any single battery is out of control due to heat and is put out a fire, the fire extinguishing pipe cannot be used for extinguishing other single batteries, and the whole battery pack needs to be replaced, so that material waste is easily caused.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a battery pack, which can realize quick fire extinguishing and improve safety.

The utility model also provides a vehicle with the battery pack.

A battery pack according to a first aspect of the present invention includes: the battery module comprises a box body, a plurality of battery modules and a plurality of battery modules, wherein the box body defines an accommodating cavity; the fire extinguishing assembly comprises a plurality of fire extinguishing pipes for storing fire extinguishing media, the fire extinguishing pipes correspond to the battery modules one by one, the fire extinguishing pipes are independent from one another and are arranged at intervals, at least part of the fire extinguishing pipes are located in the accommodating cavity, the fire extinguishing pipes and the single batteries in the battery modules are oppositely arranged in the vertical direction, and the fire extinguishing pipes are suitable for being burnt through and releasing the fire extinguishing media when any single battery is out of control due to heat.

According to the battery pack, the plurality of fire extinguishing pipes are mutually independent and arranged at intervals, and each fire extinguishing pipe is used for extinguishing the fire of the plurality of single batteries in the battery module corresponding to the fire extinguishing pipe, so that when any single battery is out of control due to heat and the corresponding fire extinguishing pipe is burnt through, the fire extinguishing effect of other fire extinguishing pipes on other battery modules cannot be influenced, and only the burnt fire extinguishing pipe needs to be replaced, so that the later maintenance is facilitated.

According to some embodiments of the present invention, each of the unit batteries is provided with an explosion-proof valve, and the fire extinguishing pipe is disposed opposite to a plurality of the explosion-proof valves of a plurality of the unit batteries in the corresponding battery module.

In some embodiments, the extinguishing tube comprises: the pipe comprises a pipe body, a liquid supply port and a detection port are formed at two ends of the pipe body along the axial direction respectively; the air pressure detection device is arranged at the detection port to detect the air pressure in the pipe body; the switch assembly is arranged on the liquid supply port and used for opening or closing the liquid supply port.

Further, the switch assembly includes: the liquid injection connector is arranged at the liquid supply port and defines a liquid injection channel communicated with the inner cavity of the fire extinguishing pipe; the blocking piece is detachably matched with one end, far away from the fire extinguishing pipe, of the liquid injection channel, and the blocking piece is used for opening or closing the liquid injection channel.

According to some embodiments of the present invention, two side walls of the box body along a length direction of the fire extinguishing pipe are respectively formed with operation ports corresponding to the air pressure detection device and the switch assembly, and the air pressure detection device and the switch assembly are respectively inserted into the corresponding operation ports.

In some embodiments, the fire suppression assembly further comprises: the mounting bracket is arranged on the accommodating cavity and is positioned at the upper side of the battery module, a plurality of injection holes which correspond to the explosion-proof valves of the single batteries in a one-to-one mode are formed in the mounting bracket, the fire extinguishing pipe is arranged on the mounting bracket, the fire extinguishing pipe deviates from the mounting bracket, one side of the battery module is arranged in a corresponding mode, and the plurality of injection holes corresponding to the battery module are arranged oppositely.

Further, the fire suppression assembly further comprises: the fixing piece is used for fixing the fire extinguishing pipe and comprises a plurality of fixing pieces, the fixing pieces are arranged on the mounting frame, and the fixing portions and the spraying holes are sequentially arranged in a staggered mode along the extending direction of the fire extinguishing pipe.

Still further, the mounting is the fixation clamp, the fixation clamp includes: the fire extinguishing tube clamp comprises a first clamp plate and a second clamp plate which are oppositely arranged, a clamp groove matched with the fire extinguishing tube is defined between the first clamp plate and the second clamp plate, one end of the first clamp plate and one end of the second clamp plate are connected with the mounting clamp, and the first clamp plate and the second clamp plate are both elastic pieces.

According to some embodiments of the utility model, a battery positive electrode and a battery negative electrode are formed on one side of each of the single batteries facing the mounting frame, and a plurality of through holes are formed in the mounting frame, the through holes correspond to the battery positive electrodes and the battery negative electrodes of all the single batteries in a one-to-one correspondence, and the battery positive electrodes and the battery negative electrodes are both suitable for passing through the through holes to be connected with an external circuit.

A vehicle according to a second aspect of the utility model includes: the battery pack according to the first aspect of the utility model.

According to the vehicle of the present invention, by providing the battery pack of the above embodiment, driving safety can be improved.

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

Drawings

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

fig. 2 is an exploded view of the battery pack shown in fig. 1;

FIG. 3 is a schematic view of another angle of the battery pack shown in FIG. 1;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is an enlarged view of circled area C in FIG. 4;

FIG. 6 is an enlarged view of encircled portion D in FIG. 4;

FIG. 7 is a cross-sectional view taken along line B-B of FIG. 3;

fig. 8 is a schematic view of a mounting bracket of the battery pack shown in fig. 2;

FIG. 9 is a schematic view of another angle of the mounting bracket shown in FIG. 8;

fig. 10 is a schematic view of yet another angle of the mounting bracket shown in fig. 8.

Reference numerals:

the battery pack 100:

a box body 1, a box body 11, an operation opening 111, a cover body 12, an accommodating cavity 13,

the battery module 2, the unit cells 21, the explosion-proof valve 211,

the fire extinguishing device comprises a fire extinguishing component 3, a fire extinguishing pipe 31, a pipe body 311, an air pressure detection device 312, a switch component 313, a liquid injection connector 3131, a blocking part 3132, a mounting frame 32, an injection hole 321, a fixing part 322, a first clamping plate 3221, a second clamping plate 3222 and a through hole 33.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the present invention.

A battery pack 100 according to an embodiment of the first aspect of the present invention is described below with reference to fig. 1 to 10.

As shown in fig. 2, a battery pack 100 according to an embodiment of the first aspect of the present invention includes: the fire extinguishing device comprises a box body 1, a battery module 2 and a fire extinguishing assembly 3.

Wherein, the box 1 can be injectd and hold chamber 13, and battery module 2 includes a plurality ofly, and a plurality of battery module 2 all locate and hold chamber 13, and every battery module 2 includes a plurality of battery cells 21, for example, a plurality of battery cells 21 can be arranged along the thickness direction of self, can bond through the structure glue between two adjacent battery cells 21.

The fire extinguishing assembly 3 may include a plurality of fire extinguishing pipes 31, the fire extinguishing pipes 31 may be used to store fire extinguishing medium, the plurality of fire extinguishing pipes 31 correspond to the plurality of battery modules 2 one by one, the plurality of fire extinguishing pipes 31 are all independent from each other and are disposed at intervals, at least a portion of the fire extinguishing pipes 31 is located in the accommodating cavity 13, the fire extinguishing pipes 31 are arranged opposite to the plurality of battery cells 21 in the corresponding battery modules 2 in the up-down direction, and the fire extinguishing pipes 31 are adapted to be burned through and release the fire extinguishing medium when any one of the battery cells 21 is out of control due to heat.

For example, as shown in fig. 1, the box body 1 includes a box body 11 and a cover body 12, the box body 11 defines a receiving cavity 13 with an open top, the cover body 12 is covered at the opening of the box body 11, the plurality of battery modules 2 are arranged in the receiving cavity 13 along the left-right direction, each battery module 2 includes a plurality of single batteries 21 arranged along the front-back direction, the fire extinguishing assembly 3 is arranged between the battery module 2 and the cover body 12, the fire extinguishing assembly 3 includes a plurality of fire extinguishing pipes 31, the plurality of fire extinguishing pipes 31 are arranged independently and at intervals, the arrangement direction of the plurality of fire extinguishing pipes 31 is parallel to the arrangement direction of the plurality of battery modules 2, the plurality of fire extinguishing pipes 31 correspond to the plurality of battery modules 2 one by one, the extension direction of each fire extinguishing pipe 31 is parallel to the arrangement direction of the plurality of single batteries 21 in the corresponding battery module 2, the fire extinguishing pipes 31 are arranged opposite to the plurality of single batteries 21 in the corresponding battery module 2 along the up-down direction, to ensure that each fire extinguishing tube 31 can extinguish any single battery 21 in the corresponding battery module 2.

According to the battery pack 100 of the embodiment of the utility model, the fire extinguishing pipes 31 are arranged independently and at intervals, and each fire extinguishing pipe 31 is used for extinguishing a plurality of single batteries 21 in the corresponding battery module 2, so that when any single battery 21 is out of thermal control and the corresponding fire extinguishing pipe 31 is burnt through, the fire extinguishing action of other fire extinguishing pipes 31 on other battery modules 2 is not influenced, and only the burnt fire extinguishing pipe 31 needs to be replaced, thereby facilitating later maintenance.

According to some embodiments of the present invention, each of the single batteries 21 is provided with an explosion-proof valve 211, and the fire extinguishing pipe 31 is arranged opposite to the explosion-proof valves 211 of the single batteries 21 in the corresponding battery module 2, for example, as shown in fig. 2, the top of each of the single batteries 21 is provided with one explosion-proof valve 211, and the fire extinguishing pipe 31 is located right above the explosion-proof valves 211, so that after thermal runaway of the single batteries 21 occurs and a spray of high temperature and high pressure is sprayed from the explosion-proof valve 211, the fire extinguishing pipe 31 can be quickly burned through to release the fire extinguishing medium, thereby realizing quick fire extinguishing and avoiding influence on other single batteries 21.

In some embodiments, referring to fig. 2 and 5-7, the fire extinguishing tube 31 may include: a tube body 311, an air pressure detecting device 312, and a switch assembly 313. Wherein, the two ends of the tube body 311 along the axial direction are respectively provided with a liquid supply port and a detection port, and the air pressure detection device 312 is arranged at the detection port to detect the pressure intensity in the tube body 311; the switch assembly 313 is disposed at the liquid supply port to open or close the liquid supply port, for example, the fire extinguishing medium may be a gas fire extinguishing medium stored in a liquid state, the air pressure detecting device 312 may be a pressure gauge, the air pressure detecting device 312 may measure the pressure inside the fire extinguishing pipe 31, when the air pressure detecting device 312 detects that the pressure inside the fire extinguishing pipe 31 is lower than a set value, the user may be reminded to replenish the fire extinguishing medium in time, and at this time, the user may fill the fire extinguishing medium into the fire extinguishing pipe 31 through the liquid supply port to ensure that there is enough fire extinguishing medium in the pipe all the time.

Further, referring to fig. 2 and 6, the switch assembly 313 may include: a liquid injection connector 3131 and a stopper 3132. The liquid injection connector 3131 may be disposed at the liquid supply port, and the liquid injection connector 3131 defines a liquid injection passage communicating with the inner cavity of the fire extinguishing pipe 31. The plugging member 3132 is detachably fitted to an end of the liquid injection passage away from the fire extinguishing pipe 31, and the plugging member 3132 is used to open or close the liquid injection passage, so that the plugging member 3132 can be opened when the fire extinguishing medium needs to be replenished, a liquid gaseous fire extinguishing medium is injected into the fire extinguishing pipe 31 through the liquid injection passage, and after the replenishment is completed, the liquid injection passage can be closed by the plugging member 3132 to prevent the fire extinguishing medium from leaking.

According to some embodiments of the present invention, referring to fig. 4 to 7, the two side walls of the box body 1 along the length direction of the fire extinguishing pipe 31 are respectively formed with an operation opening 111, wherein the operation opening 111 of one side wall corresponds to and is adapted to the air pressure detecting device 312, the operation opening 111 of the other side wall corresponds to and is adapted to the switch component 313, and the air pressure detecting device 312 and the switch component 313 are respectively inserted into the corresponding operation openings 111, so that a user can directly read the detection result of the air pressure detecting device 312 without disassembling the box body 1, and the fire extinguishing medium is supplemented into the fire extinguishing pipe 31, thereby improving the convenience of operation.

Alternatively, the liquid injection joint 3131 is connected with the inner wall of the operation port 111 of the box body 1 through a connection nut, that is, the connection nut is sleeved on the outer side of the liquid injection joint 3131, and then the connection nut is clamped or screwed with the inner wall of the operation port 111.

In some embodiments, referring to fig. 2 and 8-10, the fire suppression assembly 3 may further include: a mounting bracket 32. Specifically, mounting bracket 32 may be disposed in accommodating cavity 13, mounting bracket 32 is located on the upper side of battery module 2, a plurality of injection holes 321 are formed in mounting bracket 32, a plurality of injection holes 321 correspond to explosion-proof valves 211 of a plurality of battery cells 21 one-to-one, fire extinguishing pipe 31 is disposed on one side of mounting bracket 32 that is away from battery module 2, fire extinguishing pipe 31 is arranged opposite to a plurality of injection holes 321 that correspond to battery module 2, and thus, the arrangement of injection holes 321 does not affect that a battery cell 21 that is out of control thermally sprays high-temperature and high-pressure spray to fire extinguishing pipe 31, and does not affect that fire extinguishing pipe 31 sprays fire extinguishing medium to a battery cell 21 in a corresponding position after being burned through, and in addition, fire extinguishing pipe 31 may be fixed better, and occurrence of situations such as displacement of fire extinguishing reaction untimely caused by fire extinguishing pipe 31 in the driving process of a vehicle is prevented.

Further, referring to fig. 2, 8 and 10, the fire extinguishing assembly 3 may further include: a fixing member 322. Specifically, the fixing member 322 may be configured to fix the fire extinguishing pipe 31, the fixing member 322 includes a plurality of fixing members 322, the plurality of fixing members 322 are disposed on the mounting frame 32, and the plurality of fixing portions and the plurality of injection holes 321 are sequentially arranged in a staggered manner along an extending direction of the fire extinguishing pipe 31, so that it is ensured that the fire extinguishing pipe 31 corresponding to any one of the injection holes 321 is blown, the fixing members 322 located at two sides of the injection hole 321 may still fix the remaining fire extinguishing pipe 31, and meanwhile, due to the high-pressure fire extinguishing medium injected into the fire extinguishing pipe 31, the plurality of fixing members 322 may ensure that the fire extinguishing pipe 31 does not move when releasing the fire extinguishing medium, so as to more accurately achieve fire extinguishing.

Alternatively, the fixing member 322 and the mounting bracket 32 may be detachably connected, for example, plugged, or the fixing member 322 and the mounting bracket 32 may be integrally formed.

Still further, referring to fig. 8, the fixing member 322 is formed as a fixing clip, and the fixing member 322 may include: a first clamping plate 3221 and a second clamping plate 3222. Specifically, the first clamping plate 3221 and the second clamping plate 3222 are arranged opposite to each other in a radial direction of the fire extinguishing pipe 31, a clamping groove adapted to the fire extinguishing pipe 31 is defined between the first clamping plate 3221 and the second clamping plate 3222, one end of the first clamping plate 3221 and one end of the second clamping plate 3222 (such as the lower end of the first clamping plate 3221 and the lower end of the second clamping plate 3222 shown in fig. 8) are connected to the mounting clamp, and the first clamping plate 3221 and the second clamping plate 3222 are both elastic members, so that the fire extinguishing pipe 31 can be clamped conveniently and prevented from being broken.

According to some embodiments of the present invention, a battery positive electrode and a battery negative electrode are disposed on a side of each battery cell 21 facing the mounting frame 32, a plurality of through holes 33 are further formed on the mounting frame 32, the plurality of through holes 33 correspond to the battery positive electrodes and the battery negative electrodes of all the battery cells 21 one-to-one, and the battery positive electrodes and the battery negative electrodes are both adapted to pass through the through holes 33 to connect to an external circuit, so that the mounting frame 32 is prevented from affecting the circuit connection inside the battery pack 100.

In a specific example, the fire extinguishing pipe 31 may be a rubber member with a low melting point, so that the flame sprayed from the explosion-proof valve 211 of the unit cell 21 easily and rapidly burns through the fire extinguishing pipe 31, thereby releasing the high-pressure fire extinguishing medium inside the fire extinguishing pipe 31.

According to some embodiments of the present invention, the mounting bracket 32 and the upper surface of the battery module 2 may be adhesively connected by structural adhesive, although the present invention is not limited thereto, and the mounting bracket 32 may be detachably connected to the case 1, such as clamping, screwing, and the like.

A vehicle according to an embodiment of the second aspect of the utility model is described below.

A vehicle according to an embodiment of the second aspect of the utility model includes: the battery pack 100 according to the above-described embodiment of the present invention.

According to the vehicle of the embodiment of the present invention, by providing the battery pack 100 of the above embodiment, driving safety can be improved.

In the description of the present invention, it is to be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the indicated orientations and positional relationships, based on the orientation or positional relationship illustrated in the drawings, for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A battery pack (100), comprising:

a box (1), the box (1) defining a housing chamber (13),

a plurality of battery modules (2), wherein the battery modules (2) are arranged, the battery modules (2) are arranged in the accommodating cavity (13), and each battery module (2) comprises a plurality of single batteries (21);

the fire extinguishing assembly (3) comprises a plurality of fire extinguishing pipes (31) used for storing fire extinguishing media, the fire extinguishing pipes (31) correspond to the battery modules (2) one by one, the fire extinguishing pipes (31) are mutually independent and are arranged at intervals, at least part of the fire extinguishing pipes (31) are located in the accommodating cavity (13), the fire extinguishing pipes (31) are arranged opposite to the single batteries (21) in the battery modules (2) in the vertical direction, and the fire extinguishing pipes (31) are suitable for being burnt through and releasing the fire extinguishing media when any single battery (21) is out of control due to heat.

2. The battery pack (100) according to claim 1, wherein each of the battery cells (21) is provided with an explosion-proof valve (211), and the fire extinguishing pipe (31) is arranged opposite to the explosion-proof valves (211) of the plurality of battery cells (21) in the corresponding battery module (2).

3. The battery pack (100) of claim 1, wherein the fire extinguishing tube (31) comprises:

the pipe comprises a pipe body (311), wherein a liquid supply port and a detection port are formed at two ends of the pipe body (311) along the axial direction respectively;

the air pressure detection device (312) is arranged at the detection port to detect the pressure intensity in the pipe body (311);

the switch assembly (313), switch assembly (313) are located supply liquid mouth is used for opening or close supply liquid mouth.

4. The battery pack (100) of claim 3, wherein the switch assembly (313) comprises:

the liquid injection connector (3131), the liquid injection connector (3131) is arranged at the liquid supply port, and the liquid injection connector (3131) defines a liquid injection channel communicated with the inner cavity of the fire extinguishing pipe (31);

a block piece (3132), the block piece (3132) detachably fitting to an end of the priming channel remote from the extinguishing tube (31), the block piece (3132) being used to open or close the priming channel.

5. The battery pack (100) according to claim 3, wherein the box body (1) is formed with operation openings (111) corresponding to the air pressure detection device (312) and the switch assembly (313) at both side walls along the length direction of the fire extinguishing pipe (31), and the air pressure detection device (312) and the switch assembly (313) are respectively inserted into the corresponding operation openings (111).

6. The battery pack (100) of claim 2, wherein the fire suppression assembly (3) further comprises: a mounting frame (32), wherein the mounting frame (32) is arranged in the accommodating cavity (13) and positioned at the upper side of the battery module (2), a plurality of injection holes (321) which correspond to the explosion-proof valves (211) of the single batteries (21) one by one are formed on the mounting frame (32),

the fire extinguishing pipe (31) is arranged on one side, away from the battery modules (2), of the mounting frame (32) and is opposite to the plurality of injection holes (321) corresponding to the corresponding battery modules (2).

7. The battery pack (100) of claim 6, wherein the fire suppression assembly (3) further comprises:

the fixing piece (322) is used for fixing the fire extinguishing pipe (31), the fixing piece (322) comprises a plurality of fixing pieces (322), the fixing pieces (322) are arranged on the mounting frame (32), and the fixing pieces (322) and the injection holes (321) are sequentially arranged in a staggered mode along the extending direction of the fire extinguishing pipe (31).

8. The battery pack (100) of claim 7, wherein the securing member (322) is a securing clip comprising: the first clamping plate (3221) and the second clamping plate (3222) are oppositely arranged, a clamping groove matched with the fire extinguishing pipe (31) is defined between the first clamping plate (3221) and the second clamping plate (3222), one end of each of the first clamping plate (3221) and the second clamping plate (3222) is connected with the mounting frame (32), and each of the first clamping plate (3221) and the second clamping plate (3222) is an elastic piece.

9. The battery pack (100) according to claim 6, wherein each of the single batteries (21) is formed with a positive battery electrode and a negative battery electrode on a side facing the mounting frame (32), the mounting frame (32) is further formed with a plurality of through holes (33), the plurality of through holes (33) correspond to the positive battery electrode and the negative battery electrode of all the single batteries (21) in a one-to-one manner, and the positive battery electrode and the negative battery electrode are both adapted to pass through the through holes (33) to connect to an external circuit.

10. A vehicle, characterized by comprising: the battery pack (100) according to any one of claims 1-9.

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