Exhaust assembly and battery module

Abstract

The utility model provides an exhaust assembly and a battery module, the exhaust assembly is used for a battery cell group, the battery cell group comprises a plurality of battery cells, and the exhaust assembly comprises an exhaust part and a plurality of gas guide parts; the exhaust part is provided with a plurality of exhaust inlet holes and exhaust outlets, an exhaust cavity is formed in the exhaust part, the exhaust cavity is communicated with the plurality of exhaust inlet holes and the exhaust outlets, and the exhaust part is communicated with the explosion-proof valves of the plurality of battery cells through the plurality of exhaust inlet holes; each air guide piece is of an integrated structure and is installed in the exhaust cavity, and each air guide piece is arranged to enable the corresponding exhaust inlet hole to be communicated with the corresponding exhaust outlet. The utility model aims to solve the technical problems that when the battery module is subjected to thermal runaway, substances such as high-temperature electrolyte and high-temperature gas are sprayed out from the explosion-proof valve, so that adjacent battery cells or circuits are short-circuited, and the thermal runaway is caused.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, concretely relates to a exhaust assembly and battery. BACKGROUND

[0002] In order to further solve the energy fluctuation problem, it is necessary to integrate energy storage technology into power grid optimization, introduce energy storage equipment in the base station, effectively improve the utilization rate of the battery, reduce the power supply cost, and have a certain influence on the energy consumption mode.

[0003] In the related art, the battery module is grouped by locking screw group structure or BSB welding process of the battery cell, the battery cell is first grouped into a module, and then the module is grouped into a box to be assembled into a PACK, and the process is more, the modules are arranged closely, and heat concentration is easy to form, when thermal runaway occurs in the individual battery cell in the PACK, the high-temperature substances sprayed in the battery cell accumulate, and adjacent battery cells or lines are short-circuited to cause a chain reaction of the entire battery pack, resulting in thermal runaway explosion. UTILITY MODEL CONTENT

[0004] Embodiments of the utility model provide a kind of exhaust assembly and battery module, to solve the technical problem that battery module occurs thermal runaway, high-temperature electrolyte and high-temperature gas and other substances are sprayed from explosion-proof valve, adjacent battery cells or line short-circuit, thermal runaway occurs.

[0005] In the first aspect, embodiments of the utility model provide an exhaust assembly for battery cell group, the battery cell group includes multiple battery cells, and the exhaust assembly includes:

[0006] Exhaust member is provided with multiple exhaust inlets and exhaust outlets, exhaust cavity is formed in the exhaust member, the exhaust cavity is communicated with multiple exhaust inlets and exhaust outlets, and the exhaust member is communicated with the explosion-proof valve of multiple battery cells through multiple exhaust inlets;And,

[0007] Multiple air guides are provided.

[0008] Wherein, each air guide is an integral structure, and is installed in the exhaust cavity, each air guide is arranged to communicate the corresponding exhaust inlet and exhaust outlet.

[0009] In an embodiment, each air guide is provided with an air guide cavity, and the air guide cavity is communicated with the corresponding exhaust inlet and exhaust outlet.

[0010] In an embodiment, one side of each air guide close to the exhaust outlet is provided with a communication opening, and the air guide cavity is communicated with the exhaust cavity through the communication opening to communicate the exhaust outlet.

[0011] In an embodiment, each of the air guide members comprises a blocking wall, the blocking wall enclosing a portion of the air guide cavity; wherein the blocking wall is arranged opposite to the exhaust outlet.

[0012] In an embodiment, each of the air guide members further comprises at least one guide wall, at least one of the guide walls enclosing a portion of the air guide cavity, at least one of the guide walls comprising first and second ends arranged opposite to each other, the first end being connected to the corresponding blocking wall, the second end extending towards the direction close to the exhaust outlet.

[0013] In an embodiment, in the extending direction of the guide wall, the second end of the guide wall is beyond the inner wall of the exhaust inlet hole and is located within the exhaust cavity.

[0014] In an embodiment, in the same air guide member, two guide walls are arranged opposite to each other, the blocking wall is arranged between the two first ends, and the exhaust outlet is formed between the two second ends.

[0015] In an embodiment, the blocking wall and the guide wall are arranged obliquely relative to the cavity wall of the exhaust cavity, so that the opening area of the air guide cavity decreases in the direction in which the plurality of exhaust inlet holes point to the exhaust cavity.

[0016] In an embodiment, the exhaust member comprises opposite top and bottom plates, the top and bottom plates enclosing a portion of the exhaust cavity, the plurality of exhaust inlet holes are arranged on the bottom plate, and the exhaust outlet is arranged at one end of the exhaust member, wherein the top plate is connected to the blocking wall and the guide wall to enclose a portion of the air guide cavity.

[0017] In an embodiment, the plurality of exhaust inlet holes comprises a plurality of first and second exhaust inlet holes, the air guide cavity is communicated with the corresponding first exhaust inlet holes, wherein the end of the exhaust member away from the exhaust outlet is a closed structure, and the second exhaust inlet holes are located at the end of the plurality of first exhaust inlet holes away from the exhaust outlet.

[0018] In a second aspect, embodiments of the present application provide a battery module, comprising an exhaust assembly and a cell group, the exhaust assembly comprising:

[0019] an exhaust member provided with a plurality of exhaust inlet holes and an exhaust outlet, an exhaust cavity is formed in the exhaust member, the exhaust cavity is communicated with the plurality of exhaust inlet holes and the exhaust outlet, and the exhaust member is communicated with the explosion-proof valves of the plurality of cells through the plurality of exhaust inlet holes; and,

[0020] a plurality of air guide members installed in the exhaust cavity;

[0021] Each of the air guide members is provided with an air guide cavity, and the air guide cavity is communicated with the corresponding air outlet hole and the air outlet.

[0022] The embodiment of the utility model has the advantages of:

[0023] In the embodiment of the utility model, the exhaust assembly is used for collecting high-temperature electrolyte and high-temperature gas, avoiding the high-temperature electrolyte and high-temperature gas from splashing to other battery cells when being sprayed out, causing other battery cells to be damaged and heat runaway to be intensified; specifically, when heat runaway occurs, the high-temperature electrolyte and high-temperature gas in the battery cell are sprayed out from the explosion-proof valve, and since the exhaust assembly is arranged on the battery cell group, the high-temperature electrolyte and high-temperature gas are sprayed out from the air inlet hole into the air guide cavity of the air guide member, the air guide cavity collects the sprayed high-temperature electrolyte and high-temperature gas, the air guide member guides the flow of the high-temperature electrolyte and high-temperature gas, and the high-temperature electrolyte and high-temperature gas flow out from the air outlet, avoiding the situation that the high-temperature electrolyte and high-temperature gas are difficult to discharge due to aggregation, thereby solving the problem that in the related art, heat runaway occurs in the ACK inside the local individual battery cell, the high-temperature substances sprayed out of the battery cell inside are accumulated, adjacent battery cells or lines are short-circuited, and a chain reaction occurs in the entire battery pack, causing heat runaway and explosion. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Figure 1 It is a structure schematic view of an embodiment of the exhaust assembly and the battery cell group provided by the utility model;

[0026] Figure 2 It is a structure schematic view of the exhaust assembly provided by the utility model;

[0027] Figure 3 It is Figure 1 It is a structure schematic view of another view of the exhaust assembly in the embodiment (not including the top plate);

[0028] Figure 4 It is Figure 3 It is an enlarged schematic view of A in the embodiment;

[0029] Figure 5 It is Figure 3 It is an enlarged schematic view of B in the embodiment;

[0030] Figure 6 It is Figure 3 It is a partial view of the orthographic projection view of the air guide member on the bottom plate in the embodiment;

[0031] Figure 7 is Figure 3 a side view of the exhaust assembly in

[0032] BRIEF DESCRIPTION OF DRAWINGS

[0033] Reference Name Reference Name 100 Exhaust assembly 2 Air guide 1 Exhaust 21 Communication opening 11 Exhaust inlet 22 Barrier wall 111 First sub-exhaust inlet 23 Guide wall 112 Second sub-exhaust inlet 231 First end 12 Exhaust outlet 232 Second end 13 Exhaust cavity 24 Air guide cavity 14 Bottom plate 200 Battery cell 15 Top plate DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application. In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, the orientation words such as "upper" and "lower" generally refer to the upper and lower of the device in the actual use or working state, and specifically refer to the direction of the drawing in the drawings. And "inner" and "outer" refer to the outline of the device.

[0035] In the related art, the battery module is grouped by locking screw grouping structure or cell BSB welding process. Firstly, the cells are grouped into a module, and then the module is grouped into a box to be assembled into a PACK. The process is more, the modules are arranged closely, and heat concentration is easy to form. When local individual cells in the PACK occur thermal runaway, the high-temperature substances sprayed from the cells accumulate, which causes short circuit of adjacent cells or lines, and causes thermal runaway explosion of the entire battery pack.

[0036] In view of this, the present application provides an exhaust assembly 100, Figures 1 to 7 The exhaust assembly 100 provided by the present application has the advantages of simple structure, and can collect and guide the high-temperature electrolyte and high-temperature gas sprayed from the cells during thermal runaway, so as to avoid thermal runaway aggravation. The exhaust assembly 100 will be described in detail below in combination with the main drawings.

[0037] Please refer to Figure 1 , Figure 2 and Figure 3The embodiment provides an exhaust assembly 100 for a battery cell group 200, the battery cell group 200 comprising a plurality of battery cells 200, the exhaust assembly 100 comprising an exhaust member 1 and a plurality of air guide members 2; the exhaust member 1 is provided with a plurality of exhaust inlets 11 and an exhaust outlet 12, and an exhaust cavity 13 is formed in the exhaust member 1, the exhaust cavity 13 being communicated with the plurality of exhaust inlets 11 and the exhaust outlet 12, and the exhaust member 1 is communicated with explosion-proof valves of the plurality of battery cells 200 through the plurality of exhaust inlets 11; the plurality of air guide members 2 are installed in the exhaust cavity 13; wherein each air guide member 2 is provided with an air guide cavity 24, and the air guide cavity 24 is communicated with the corresponding exhaust inlet 11 and the exhaust outlet 12.

[0038] In the embodiment of the utility model, the exhaust assembly 100 is used for collecting high-temperature electrolyte and high-temperature gas, avoids that the high-temperature electrolyte and high-temperature gas are sprayed out and splash to other battery cells 200, causes other battery cells 200 to be damaged, and aggravates thermal runaway, specifically, when thermal runaway occurs, the high-temperature electrolyte and high-temperature gas in the battery cell 200 are sprayed out from the explosion-proof valve, since the exhaust assembly 100 is arranged on the battery cell group 200, the high-temperature electrolyte and high-temperature gas are sprayed out from the exhaust inlet 11 and enter the exhaust cavity 13 of the exhaust member 1, the exhaust cavity 13 collects the sprayed high-temperature electrolyte and high-temperature gas, the air guide member 2 guides the flow of the high-temperature electrolyte and high-temperature gas, and the high-temperature electrolyte and high-temperature gas flow out from the exhaust outlet 12, the situation that the high-temperature electrolyte and high-temperature gas are difficult to discharge due to aggregation is avoided, and the problems that in the related art, thermal runaway occurs in individual battery cells 200 in the ACK, high-temperature substances sprayed out from the battery cells 200 are accumulated, adjacent battery cells 200 or a circuit are short-circuited, and a chain reaction occurs in the entire battery pack, causing thermal runaway and explosion are solved.

[0039] In some embodiments, each air guide member 2 is a unitary structure, the unitary structure has good sealing performance, when guiding gas or electrolyte, the probability of leakage is reduced, backflow of the gas and electrolyte is avoided, and the gas and electrolyte can flow out from the exhaust outlet 12.

[0040] It should be noted that the communication mode of the exhaust assembly 100 and the explosion-proof valve of the battery cell group 200 is not limited, and the exhaust assembly 100 and the explosion-proof valve of the battery cell group 200 can be directly communicated or indirectly communicated.

[0041] For example, in some embodiments, the exhaust member 1 includes oppositely arranged top plate 15 and bottom plate 14, the bottom plate 14 is connected with the group of battery cells 200, and the bottom plate 14 is formed with a plurality of exhaust inlet holes 11 arranged at intervals, each of which corresponds to the explosion-proof valve of each battery cell 200. When the battery cell 200 has a problem, the high-temperature electrolyte and high-temperature gas in the battery cell 200 are affected by pressure, temperature, etc., and break through the explosion-proof valve to enter the exhaust member 1 from the exhaust inlet hole 11, thereby being stored in the exhaust cavity 13, avoiding the high-temperature electrolyte and high-temperature gas from being sprayed out to splash on other battery cells 200, causing other battery cells 200 to be corroded or affected by temperature, and also causing thermal runaway, thereby improving the safety of the group of battery cells 200.

[0042] In some embodiments, in order to further improve the safety of the battery pack, a one-way valve is arranged at the exhaust inlet hole 11, which is in a closed state when the group of battery cells 200 is normally working, and when the group of battery cells 200 has a problem, the high-temperature electrolyte and high-temperature gas in the battery cell 200 break through the explosion-proof valve to be sprayed out, thereby opening the one-way valve and flowing into the exhaust member 1. Since the one-way valve is arranged at the exhaust inlet hole 11, the high-temperature electrolyte and high-temperature gas in the exhaust member 1 cannot flow back into the battery cell 200, thereby improving the safety.

[0043] In some other embodiments, the exhaust assembly 100 is provided with a plurality of air guide members 2, each of which corresponds to an exhaust inlet hole 11, and the plurality of air guide members 2 cooperate with each other to guide the flow of high-temperature electrolyte and high-temperature gas in the exhaust cavity 13, thereby flowing out from the exhaust outlet 12.

[0044] Please refer to FIGS. Figure 3 , Figure 4 , Figure 5 The air guide member 2 is used to guide the flow of high-temperature electrolyte and high-temperature gas into the exhaust cavity 13, and therefore, the side of each air guide member 2 close to the exhaust outlet 12 is provided with a communication opening 21, and the guide cavity 24 is communicated with the exhaust cavity 13 through the communication opening 21 to communicate with the exhaust outlet 12. Specifically, when the battery cell 200 has thermal runaway, the high-temperature electrolyte and high-temperature gas in the battery cell 200 are sprayed out from the explosion-proof valve, enter the guide cavity 24 of the air guide member 2 through the exhaust inlet hole 11, the exhaust member 1 is provided with the communication opening 21, the communication opening 21 communicates the guide cavity 24 and the exhaust cavity 13, the high-temperature electrolyte and high-temperature gas in the guide cavity 24 enter the exhaust cavity 13 from the communication opening 21, and then flow out from the exhaust outlet 12, avoiding the accumulation of high-temperature electrolyte and high-temperature gas, thereby improving the safety of the group of battery cells 200.

[0045] In some embodiments, please refer to Figure 3The communication openings 21 of the plurality of air guide members 2 are oriented in the same direction, so that the high-temperature electrolyte and high-temperature gas in the air exhaust member 1 flow in the same direction, avoiding backflow and improving the safety of the battery cell group 200.

[0046] In some embodiments, the air exhaust member 1 has a first end 231 and a second end 232 arranged opposite to each other along the length direction, and the air exhaust outlet 12 is arranged on either one of the first end 231 and the second end 232. In this embodiment, the air exhaust outlet 12 is arranged on the first end 231 for ease of description. In order to facilitate the smooth discharge of the high-temperature electrolyte and high-temperature gas in the air exhaust member 1, the bottom plate 14 of the air exhaust member 1 is arranged to be inclined, and more specifically, the thickness of the bottom plate 14 gradually decreases in the direction from the second end 232 to the first end 231. In this way, the high-temperature electrolyte and high-temperature gas in the air exhaust member 1 can flow along the inclined point and be smoothly discharged from the air exhaust outlet 12.

[0047] Please refer to Figure 4 and Figure 5 Each air exhaust inlet 11 has one end close to the air exhaust outlet 12 and the other end away from the air exhaust outlet 12, and each air guide member 2 includes a blocking wall 22 that surrounds part of the air guide cavity 24, is arranged opposite to the air exhaust outlet 12, and is located at the one end of the air exhaust inlet 11 away from the air exhaust outlet 12. In this embodiment, the blocking wall 22 is used to block the high-temperature electrolyte and high-temperature gas, avoiding backflow of the high-temperature electrolyte and high-temperature gas. When thermal runaway occurs in the battery cell group 200, it may be that one of the battery cells 200 has thermal runaway and the others do not have thermal runaway. When the battery cell 200 far away from the air exhaust outlet 12 has thermal runaway, the high-temperature electrolyte and high-temperature gas enter the air exhaust cavity 13 from the air exhaust inlet 11 and flow in the air exhaust cavity 13. Since the blocking wall 22 is arranged at each air exhaust inlet 11, when the high-temperature electrolyte and high-temperature gas flow through the blocking wall 22, they are blocked and divided by the blocking wall 22 and flow from both sides of the blocking wall 22, thereby avoiding backflow of the high-temperature electrolyte and high-temperature gas through other air exhaust inlets 11 to other battery cells 200, causing problems in the other battery cells 200 and further exacerbating thermal runaway.

[0048] In this embodiment, the blocking wall 22 is arranged in a circular arc shape and curves away from the air exhaust outlet 12. The circular-arc-shaped blocking wall 22 can play a backflow role, avoiding accumulation of the high-temperature electrolyte and high-temperature gas at the blocking wall 22, thereby improving safety.

[0049] The exhaust inlet hole 11 is a long hole. Since the exhaust hole is a long hole, the high-temperature electrolyte and the high-temperature gas may flow back into the battery cell 200 from both sides of the long hole during the flow. In order to improve safety, in the embodiment, please continue to refer to Figure 4 and Figure 5 Each air guide 2 further comprises at least one guide wall 23, the at least one guide wall 23 surrounds a part of the air guide cavity 24, and the at least one guide wall 23 comprises a first end 231 and a second end 232 arranged oppositely, the first end 231 is connected to the corresponding blocking wall 22, and the second end 232 extends towards the direction close to the exhaust outlet 12. Specifically, the guide wall 23 is connected with the blocking wall 22, and the guide wall 23 can play a role of guiding flow, so that the high-temperature electrolyte and the high-temperature gas in the exhaust cavity 13 flow along the extension direction of the guide wall 23, thereby avoiding the backflow of the high-temperature electrolyte and the high-temperature gas, and improving safety.

[0050] In some embodiments, the guide wall 23 of one air guide 2 is spaced apart from the blocking wall 22 of another air guide 2 between the two adjacent air guides 2. Such arrangement is to avoid the air guide 2 from forming a sealed structure, so that the high-temperature electrolyte and the high-temperature gas cannot be discharged.

[0051] Please refer to Figure 4 , Figure 5 and Figure 6 In order to avoid the high-temperature electrolyte and the high-temperature gas from flowing back to the battery cell 200 from the side of the exhaust inlet hole 11 close to the exhaust outlet 12, in the extension direction of the guide wall 23, the second end 232 of the guide wall 23 exceeds the inner wall of the exhaust inlet hole 11 and is located in the exhaust cavity 13. The length of the guide wall 23 exceeding the length of the exhaust inlet hole 11 can play a certain blocking role, thereby avoiding the backflow of the high-temperature electrolyte and the high-temperature gas to the battery cell 200.

[0052] In some embodiments, the distance between the second end 232 of the guide wall 23 and the inner wall of the exhaust inlet hole 11 is L, and 5mm≤L≤30mm. It should be noted that when L is less than 5mm, the length of the guide wall 23 is too short, and the high-temperature electrolyte and the high-temperature gas flow back to the battery cell 200; when L is greater than 30mm, the length of the guide wall 23 is too long, and the space occupied is increased. More specifically, L can be 5mm, 5.2mm, 5.8mm, 6mm, 6.6mm, 7mm, 7.9mm, 8mm, 8.1mm, 9mm, 9.5mm, 10mm, 11mm, 12mm, 13mm, 18mm, 19mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm or other data not listed.

[0053] In some embodiments, please continue to refer to Figure 3 ,Figure 4 And Figure 5 In the same air guide 2, two guide walls 23 are provided, and the two guide walls 23 are oppositely arranged. The purpose of providing two guide walls 23 is to improve the safety of the exhaust assembly 100, and to guide the high-temperature electrolyte and high-temperature gas from both sides of the exhaust inlet hole 11, so as to avoid the backflow of the high-temperature electrolyte and high-temperature gas from both sides of the exhaust inlet hole 11, thereby providing the safety of the exhaust assembly 100. Further, the blocking wall 22 is arranged between the two first ends 231, and the exhaust outlet 12 is formed between the two second ends 232.

[0054] It should be noted that when the high-temperature electrolyte and high-temperature gas are sprayed, they are affected by pressure and the like, and are sprayed in all directions. In order to reduce the force of the high-temperature electrolyte and high-temperature gas when they are sprayed, the blocking wall 22 and the guide wall 23 are inclined with respect to the cavity wall of the exhaust cavity 13, so that the opening area of the air guide cavity 24 decreases in the direction in which the plurality of exhaust inlet holes 11 point to the exhaust cavity 13. In this way, the inner side of the air guide 2 is arranged in a circular arc, which can play a buffering role on the one hand, and can alleviate the force of the high-temperature electrolyte and high-temperature gas when they are sprayed. On the other hand, it can play a guiding role, guiding the high-temperature electrolyte and high-temperature gas to flow to the communication opening 21, so as to flow into the exhaust cavity 13 from the communication opening 21, and then flow from the exhaust cavity 13 to the exhaust outlet 12, thereby improving the safety.

[0055] In some embodiments, referring to Figure 7 The inclination angle of the cavity wall is α, and 120°≤α≤130°. Specifically, α can be 120°, 121°, 122°, 123°, 124°, 125°, 126°, 127°, 128°, 129°, 130° or other data not listed.

[0056] Referring to Figure 2 And Figure 3The exhaust member 1 includes opposite top plate 15 and bottom plate 14, the top plate 15 and the bottom plate 14 enclose part of the exhaust cavity 13, a plurality of exhaust inlets 11 are arranged on the bottom plate 14, and an exhaust outlet 12 is arranged at one end of the exhaust member 1, wherein the top plate 15 is connected to the blocking wall 22 and the guide wall 23 to enclose part of the gas guide cavity 24. In this way, the gas guide cavity 24 is a semi-closed structure, which can guide the high-temperature electrolyte and high-temperature gas, so that the high-temperature electrolyte and high-temperature gas flow from both sides of the exhaust inlet 11, avoiding the high-temperature electrolyte and high-temperature gas adhering to the explosion-proof valve of the battery cell 200. Since the gas guide member 2 is arranged in a semi-closed structure, when the high-temperature electrolyte and high-temperature gas of the thermal runaway battery cell 200 are sprayed from the corresponding battery cell 200 explosion-proof valve, they can only flow along the direction of the opening of the gas guide member 2, and finally flow along the direction of the communication opening 21 of the gas guide member 2, and finally be sprayed from the exhaust outlet 12 of the exhaust assembly 100. Since the exhaust outlet 12 of the exhaust assembly 100 is arranged away from the module harness and the positive and negative copper bars of the battery pack and other components, the sprayed high-temperature electrolyte and high-temperature gas will not cause thermal runaway again.

[0057] Please refer to Figure 3 , Figure 4 and Figure 5 In some embodiments, the plurality of exhaust inlets 11 includes a plurality of first sub-exhaust inlets 111 and second sub-exhaust inlets 112. It should be noted that in this embodiment, since the second sub-exhaust inlet 11 is located on the closed structure side, one side of the second sub-exhaust inlet 11 does not have other exhaust inlets 11, so there is no phenomenon of backflow of high-temperature electrolyte and high-temperature gas discharged from other exhaust inlets 11 at the second sub-exhaust inlet 11. Therefore, in order to save materials, the second sub-exhaust inlet can not be provided with a gas guide member 2.

[0058] Of course, in some embodiments, in order to improve safety, the plurality of first sub-exhaust inlets 11 and the second sub-exhaust inlets 11 are each provided with a gas guide member 2.

[0059] Please continue to refer to Figure 3 , Figure 4 and Figure 5The air guide cavity 24 is communicated with the corresponding first sub-exhaust inlet hole 111, wherein the end of the exhaust assembly 100 away from the exhaust outlet 12 is a closed structure, and the second sub-exhaust inlet hole 112 is located at the end of the plurality of first sub-exhaust inlet holes 111 away from the exhaust outlet 12. In this way, one end of the exhaust assembly 100 is closed, and the other end is formed with the exhaust outlet 12, and can only flow in the direction of the exhaust outlet 12, and finally be sprayed out from the exhaust outlet 12 of the exhaust assembly 100, because the exhaust outlet 12 of the exhaust assembly 100 is arranged away from the direction of the module harness and the positive and negative copper bars of the battery pack and other components, and the sprayed high-temperature electrolyte and high-temperature gas will not cause thermal runaway again.

[0060] The utility model also proposes a battery module, battery module includes a plurality of electric core 200 group and a plurality of exhaust assembly 100, and one exhaust assembly 100 is arranged on each electric core 200 group. The specific structure of the exhaust assembly 100 is referred to the above embodiment, because the battery adopts all the technical solutions of the above embodiments, at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0061] The utility model also proposes a battery pack, and the battery pack includes a battery module. The specific structure of the battery module is referred to the above embodiment, because the battery pack adopts all the technical solutions of the above embodiments, at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0062] In addition, the utility model also proposes a kind of electric equipment, and the electric equipment includes above-mentioned battery pack. The specific structure of the battery pack is referred to the above embodiment, because the electric equipment adopts all the technical solutions of the above embodiments, at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0063] It can be understood that the electric equipment includes but is not limited to electric toy, electric tool, electric car, automobile, ship, spacecraft and so on. Among them, electric toy can include fixed or mobile electric toy, for example, game machine, electric car toy, electric ship toy and electric plane toy and so on, spacecraft can include airplane, rocket, space shuttle and spaceship and so on. Automobile can be fuel automobile, gas automobile and new energy automobile.

[0064] The above has carried out the detailed introduction to the embodiment of the utility model, the principle and implementation mode of the utility model have been described in this article by applying specific examples, the above embodiment explanation is only for helping understanding the method and its core thought of the utility model; simultaneously, for the technical personnel in the art, according to the thought of the utility model, there will be changes in specific implementation mode and application range, and the above is described, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. An exhaust assembly characterized by, Battery cell group (200), the exhaust assembly comprising: an exhaust member (1) provided with a plurality of exhaust inlets (11) and an exhaust outlet (12), an exhaust cavity (13) formed in the exhaust member (1), the exhaust cavity (13) communicating with the plurality of exhaust inlets (11) and the exhaust outlet (12), the exhaust member (1) communicating with a plurality of explosion-proof valves of a plurality of battery cells through the plurality of exhaust inlets (11); and a plurality of air guide members (2); wherein each of the air guide members (2) is an integral structure and is installed in the exhaust cavity (13), and each of the air guide members (2) is configured to communicate the corresponding exhaust inlet (11) and the exhaust outlet (12).

2. The exhaust assembly of claim 1, wherein, Each of the air guide members (2) is provided with an air guide cavity (24) that communicates the corresponding exhaust inlet (11) and the exhaust outlet (12).

3. The exhaust assembly of claim 2, wherein, One side of each of the air guide members (2) close to the exhaust outlet (12) is provided with a communication opening (21), and the air guide cavity (24) communicates the exhaust cavity (13) through the communication opening (21) to communicate the exhaust outlet (12).

4. The exhaust assembly of claim 3, wherein, Each of the air guide members (2) includes a blocking wall (22) that encloses a part of the air guide cavity (24); wherein the blocking wall (22) is oppositely arranged with the exhaust outlet (12).

5. The exhaust assembly of claim 4, wherein, Each of the air guide members (2) further includes at least one guide wall (23), at least one of the guide walls (23) enclosing a part of the air guide cavity (24), at least one of the guide walls (23) including oppositely arranged first and second ends (231) and (232), the first end (231) being connected to the corresponding blocking wall (22), and the second end (232) extending towards the direction close to the exhaust outlet (12).

6. The exhaust assembly of claim 5, wherein, In the extension direction of the guide wall (23), the second end (232) of the guide wall (23) exceeds the inner wall of the exhaust inlet (11) and is located in the exhaust cavity (13).

7. The exhaust assembly of claim 5, wherein, In the same air guide member (2), the guide wall (23) is provided with two oppositely arranged guide walls (23), the blocking wall (22) is arranged between the two first ends (231), and the exhaust outlet (12) is formed between the two second ends (232).

8. The exhaust assembly of claim 5, wherein, The blocking wall (22) and the guide wall (23) are inclinedly arranged relative to the cavity wall of the exhaust cavity (13), so that the opening area of the air guide cavity (24) decreases in the direction in which the plurality of exhaust inlets (11) point to the exhaust cavity (13).

9. The exhaust assembly of any one of claims 5-8, wherein, The exhaust member (1) includes opposite top and bottom plates (15) and (14), the top and bottom plates (15) and (14) enclosing a part of the exhaust cavity (13), the plurality of exhaust inlets (11) being provided on the bottom plate (14), and the exhaust outlet (12) being provided at one end of the exhaust member (1), wherein the top plate (15) is connected to the blocking wall (22) and the guide wall (23) to enclose a part of the air guide cavity (24).

10. The exhaust assembly of any one of claims 2-8, wherein, The plurality of exhaust inlets (11) comprises a plurality of first sub-exhaust inlets (111) and second sub-exhaust inlets (112), the gas guide cavity (24) is communicated with the corresponding first sub-exhaust inlets (111), wherein one end of the exhaust member (1) away from the exhaust outlet (12) is a closed structure, and the second sub-exhaust inlets (112) are located at one end of the plurality of first sub-exhaust inlets (111) away from the exhaust outlet (12).

11. A battery module, characterized by An electric cell group comprising the exhaust assembly (100) according to any one of claims 1-10 and an electric cell.

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