Battery pack and electric device

Abstract

The utility model discloses a battery pack and an electric device, and relates to the field of batteries. The battery pack comprises a box body, a single battery, an exhaust part and a cooling assembly, the box body is provided with a first anti-explosion valve; the single battery and the cooling assembly are arranged in the box body, and a second anti-explosion valve is arranged on one side of the single battery; the exhaust part is arranged in the box body, is provided with an exhaust channel with an opening in one end, is arranged on one side, provided with the second anti-explosion valve, of the single battery, and is provided with an air inlet hole communicated with the exhaust channel and the second anti-explosion valve respectively; the end, provided with the opening, of the exhaust part is connected with the cooling assembly, the cooling assembly comprises a heat exchange part and a cooling part, the cooling part is arranged on the side, facing the single batteries, of the heat exchange part, a heat exchange cavity is defined by the cooling part and the heat exchange part, and the heat exchange part is provided with a through hole communicating with the heat exchange cavity and the opening and an exhaust hole communicating with the heat exchange cavity. And the first anti-explosion valve cover seals the exhaust hole. According to the battery pack provided by the invention, the risks of thermal runaway diffusion and combustion explosion are reduced, and the safety performance is improved.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and particularly to a battery pack and an electrical device. Background Art

[0002] During the use of a battery pack, when a single battery undergoes thermal runaway, a large amount of heat will be released in a short time, and high-temperature combustible gases will be ejected. If reasonable measures are not taken, the heat and high-temperature combustible gases generated will cause the spread of thermal runaway and even lead to the combustion and explosion of the battery pack. Utility Model Content

[0003] To achieve the above object, in view of this, the purpose of this application is to provide a battery pack, aiming to solve the technical problem that the heat and high-temperature combustible gases generated after a single battery undergoes thermal runaway in the prior art will cause the spread of thermal runaway and even lead to the combustion and explosion of the battery pack.

[0004] The technical solution adopted is as follows:

[0005] In the first aspect, an embodiment of this application provides a battery pack, including:

[0006] A box body, which has a first explosion-proof valve;

[0007] Single batteries, arranged in the box body, and one side of the single battery has a second explosion-proof valve;

[0008] An exhaust member, arranged in the box body, the exhaust member has an exhaust channel with one end open, the exhaust member is arranged on the side of the single battery with the second explosion-proof valve, and is provided with air inlet holes respectively communicating with the exhaust channel and the second explosion-proof valve;

[0009] A cooling assembly, arranged in the box body, the open end of the exhaust member is connected to the cooling assembly, the cooling assembly includes a heat exchange member and a cooling member, the cooling member is arranged on the side of the heat exchange member facing the single battery, and encloses a heat exchange cavity with the heat exchange member, the heat exchange member is provided with through holes respectively communicating with the heat exchange cavity and the opening, and is provided with exhaust holes communicating with the heat exchange cavity, and the first explosion-proof valve seals the exhaust holes.

[0010] In one of the embodiments of the first aspect, heat exchange fins are arranged in the heat exchange cavity, the heat exchange fins are arranged on the side of the heat exchange member facing the cooling member, and / or the heat exchange fins are arranged on the side of the cooling member facing the heat exchange member.

[0011] In one of the embodiments of the first aspect, heat exchange fins are arranged on the side of the heat exchange member facing the cooling member, and the heat exchange fins are in contact with the side of the cooling member away from the single battery.

[0012] In one embodiment of the first aspect, the heat exchange member has a first direction and a second direction, the second direction being perpendicular to the first direction. A plurality of heat exchange fins are provided, and the plurality of heat exchange fins are arranged in a wavy shape on the heat exchange member along the first direction or the second direction.

[0013] In one embodiment of the first aspect, the battery pack further includes a liquid cooling plate. The liquid cooling plate is disposed inside the box body and contacts the side of the single battery away from the second explosion-proof valve. The cooling member is communicated with the liquid cooling plate.

[0014] In one embodiment of the first aspect, a first sealing and insulating adhesive layer is provided between the exhaust member and the single battery. The first sealing and insulating adhesive layer contacts the exhaust member and the single battery respectively, and the first sealing and insulating adhesive layer is provided with first avoidance holes respectively communicated with the air inlet hole and the second explosion-proof valve.

[0015] In one embodiment of the first aspect, a second sealing and insulating adhesive layer is provided between the exhaust member and the cooling assembly. The second sealing and insulating adhesive layer contacts the exhaust member and the cooling assembly respectively, and the second sealing and insulating adhesive layer is provided with second avoidance holes respectively communicated with the opening and the through hole.

[0016] In one embodiment of the first aspect, a third sealing and insulating adhesive layer is provided between the heat exchange member and the inner wall of the box body. The third sealing and insulating adhesive layer contacts the heat exchange member and the inner wall of the box body respectively, and the third sealing and insulating adhesive layer is provided with third avoidance holes respectively communicated with the exhaust hole and the first explosion-proof valve.

[0017] In one embodiment of the first aspect, a fourth sealing and insulating adhesive layer is provided between the heat exchange member and the cooling member. The fourth sealing and insulating adhesive layer contacts the heat exchange member and the cooling member respectively.

[0018] In a second aspect, an embodiment of the present application further provides an electrical device, including the battery pack in any of the above embodiments.

[0019] The beneficial effects of the present application are as follows: The present application provides a battery pack and an electrical device. The battery pack includes a box body, a single battery, an exhaust member, and a cooling component. One end of the box body is provided with a first explosion-proof valve. The single battery is disposed inside the box body and has a second explosion-proof valve on one side. The cooling component is disposed inside the box body. The exhaust member has an exhaust passage with one end open. By disposing the exhaust member on the side of the single battery where the second explosion-proof valve is located, and the exhaust member is provided with intake holes respectively communicating with the exhaust passage and the second explosion-proof valve, in this way, when thermal runaway occurs in the single battery, the high-temperature emissions discharged by the second explosion-proof valve can sequentially pass through the intake holes, the exhaust passage, and the opening and be discharged, effectively reducing the risk of thermal runaway diffusion, combustion, and explosion of the battery pack.

[0020] Meanwhile, by connecting the end of the exhaust member close to the opening to the cooling component, the cooling component includes a heat exchange member and a cooling member. The cooling member is disposed on the side of the heat exchange member facing the single battery and encloses a heat exchange cavity with the heat exchange member. The heat exchange member is provided with through holes respectively communicating with the heat exchange cavity and the opening, and is provided with exhaust holes communicating with the heat exchange cavity. The first explosion-proof valve seals the exhaust holes. In this way, the high-temperature emissions discharged through the opening can enter the heat exchange cavity through the through holes to perform heat exchange on the high-temperature emissions, cool down the high-temperature emissions, and then be discharged through the exhaust holes and the first explosion-proof valve, thereby avoiding the technical problem that the high-temperature emissions are directly discharged outside the battery pack and burn outside the battery pack, resulting in the combustion of the electrical device, and effectively improving the overall safety performance of the battery pack and the electrical device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0022] Figure 1 Shows a three-dimensional schematic diagram of a battery pack in some embodiments of the present application;

[0023] Figure 2 Shows an exploded schematic diagram of a battery pack in some embodiments of the present application;

[0024] Figure 3 Shows an exploded schematic diagram of a battery pack with the box body omitted in some embodiments of the present application;

[0025] Figure 4 Shows a cross-sectional schematic diagram of a battery pack in some embodiments of the present application;

[0026] Figure 5 Shows Figure 4 An enlarged schematic diagram of the structure of part A in

[0027] Figure 6 The structural schematic diagram of the heat exchange component in some embodiments of the present application is shown.

[0028] Description of main component symbols:

[0029] 100 - battery pack; 110 - box body; 111 - first explosion - proof valve; 120 - single battery; 121 - second explosion - proof valve; 130 - exhaust component; 131 - exhaust channel; 132 - opening; 133 - air inlet hole; 140 - cooling assembly; 141 - heat exchange component; 1412 - through hole; 1413 - exhaust hole; 1414 - heat exchange fin; 142 - cooling component; 1421 - second liquid inlet; 1422 - second liquid outlet; 1423 - second liquid inlet pipe; 1424 - second liquid outlet pipe; 143 - heat exchange cavity; 150 - liquid cooling plate; 151 - first liquid inlet; 152 - first liquid cooling flow channel; 153 - first liquid outlet; 154 - first liquid inlet pipe; 155 - first liquid outlet pipe; 160 - first sealing and insulating glue layer; 161 - first avoidance hole; 170 - second sealing and insulating glue layer; 171 - second avoidance hole. Detailed implementation manners

[0030] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described by referring to the drawings below are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.

[0031] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0033] In this application, unless otherwise clearly stipulated and defined, terms such as "install", "connect", "link", "fix", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] In this application, unless otherwise clearly stipulated and defined, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal level than the second feature.

[0035] As Figure 1 and Figure 2 shown, an embodiment of this application provides a battery pack 100, which is mainly applied to an electric device. The battery pack 100 includes: a box body 110, a single cell 120, an exhaust member 130, and a cooling assembly 140.

[0036] Referring jointly to Figure 3 、 Figure 4 and Figure 5 , wherein, the box body 110 has a first explosion-proof valve 111, the single cell 120 is arranged inside the box body 110, and one side of the single cell 120 has a second explosion-proof valve 121. The exhaust member 130 is arranged inside the box body, the exhaust member 130 has an exhaust passage 131 with an open end 132, the exhaust member 130 is arranged on the side of the single cell 120 where the second explosion-proof valve 121 is located, and an air inlet hole 133 that is respectively communicated with the exhaust passage 131 and the second explosion-proof valve 121 is provided.

[0037] The cooling component 140 is disposed within the box body 110. One end of the exhaust opening 132 of the exhaust member 130 is connected to the cooling component 140. The cooling component 140 includes a heat exchange member 141 and a cooling member 142. The cooling member 142 is disposed on a side of the heat exchange member 141 facing the single cell 120, and encloses a heat exchange cavity 143 with the heat exchange member 141. The heat exchange member 141 is provided with a through hole 1412 communicating with the heat exchange cavity 143 and the opening 132 respectively, and an exhaust hole 1413 communicating with the heat exchange cavity 143. The first explosion-proof valve 111 seals the exhaust hole 1413.

[0038] In the battery pack 100 provided by the embodiment of the present application, the exhaust member 130 has an exhaust passage 131 with an opening 132 at one end. By disposing the exhaust member 130 on a side of the single cell 120 where the second explosion-proof valve 121 is located, and the exhaust member 130 is provided with an intake hole 133 communicating with the exhaust passage 131 and the second explosion-proof valve 121 respectively. In this way, when the single cell 120 undergoes thermal runaway, the high-temperature emissions discharged by the second explosion-proof valve 121 can be discharged through the intake hole 133, the exhaust passage 131 and the opening 132 in sequence, effectively reducing the risk of thermal runaway diffusion, combustion and explosion of the battery pack 100. In addition, this is also beneficial for thermoelectric isolation, avoiding the technical problem that high-temperature emissions are directly discharged into the electrical space of the battery pack 100, resulting in an insulation risk.

[0039] Meanwhile, by connecting one end of the exhaust member 130 close to the opening 132 to the cooling component 140, the cooling component 140 includes a heat exchange member 141 and a cooling member 142. The cooling member 142 is disposed on a side of the heat exchange member 141 facing the single cell 120 and encloses a heat exchange cavity 143 with the heat exchange member 141. The heat exchange member 141 is provided with a through hole 1412 communicating with the heat exchange cavity 143 and the opening 132 respectively, and an exhaust hole 1413 communicating with the heat exchange cavity 143. The first explosion-proof valve 111 seals the exhaust hole 1413. In this way, the high-temperature emissions discharged through the opening 132 can enter the heat exchange cavity 143 through the through hole 1412 to perform heat exchange on the high-temperature emissions, cooling down the high-temperature emissions, and then discharging them through the exhaust hole 1413 and the first explosion-proof valve 111, thereby avoiding the technical problem that high-temperature emissions are directly discharged outside the battery pack 100 and burning outside the battery pack 100, resulting in the burning of the electrical device, and effectively improving the overall safety performance of the battery pack 100 and the electrical device.

[0040] Such as Figure 3 、 Figure 4 and Figure 5As shown, in an embodiment of the present application, heat exchange fins 1414 are provided in the heat exchange chamber 143, and the heat exchange fins 1414 are disposed on the side of the heat exchange member 141 facing the cooling member 142, and / or the heat exchange fins 1414 are disposed on the side of the cooling member 142 facing the heat exchange member 141.

[0041] In this embodiment, by providing heat exchange fins 1414 on the side of the heat exchange member 141 facing the cooling member 142 and / or on the side of the cooling member 142 facing the heat exchange member 141, the flow path of the high-temperature emissions is extended under the action of the heat exchange fins 1414, so that the high-temperature emissions can fully exchange heat with the heat exchange fins 1414 in the heat exchange chamber 143, improving the heat exchange efficiency. Furthermore, the high-temperature emissions are quickly cooled down to below the ignition point and discharged through the exhaust hole 1413 and the first explosion-proof valve 111, further improving the overall safety performance of the battery pack 100 and the electrical device.

[0042] As Figure 3 、 Figure 4 and Figure 5 shown, in the above embodiment of the present application, the heat exchange fins 1414 are provided on the side of the heat exchange member 141 facing the cooling member 142, and the heat exchange fins 1414 are in contact with the side of the cooling member 142 away from the single battery 120.

[0043] In this embodiment, by providing heat exchange fins 1414 on the side of the heat exchange member 141 facing the cooling member 142, and the heat exchange fins 1414 are in contact with the side of the cooling member 142 away from the single battery 120, when the heat exchange fins 1414 exchange heat with the high-temperature emissions, the cooling member 142 can continuously cool the heat exchange fins 1414 to take away the heat on the heat exchange fins 1414, and the cooling member 142 itself can also exchange heat with the high-temperature emissions to cool the high-temperature emissions, thus achieving the effect of quickly cooling the high-temperature emissions.

[0044] As Figure 6 shown, in the above embodiment of the present application, the heat exchange member 141 has a first direction and a second direction, the second direction is perpendicular to the first direction, a plurality of heat exchange fins 1414 are provided, and the plurality of heat exchange fins 1414 are arranged in a wavy shape on the heat exchange member 141 along the first direction or the second direction. That is, along the first direction or the second direction, each heat exchange fin 1414 can be segmented and bent to form a wavy shape, and the extension lines of the edge contours of two adjacent heat exchange fins 1414 intersect along the first direction or the second direction; or there is an included angle between two adjacent heat exchange fins 1414, and in the three adjacent heat exchange fins 1414, the opening directions of the two formed included angles are opposite.

[0045] In this embodiment, a plurality of heat exchange fins 1414 are arranged in an array, and the plurality of heat exchange fins 1414 are arranged in a wavy shape on the heat exchange member 141 along a first direction and a second direction, so as to further extend the flow path of the high-temperature emissions, thereby further enabling the high-temperature emissions to fully exchange heat with the heat exchange fins 1414 in the heat exchange cavity 143, further improving the heat exchange efficiency, further quickly cooling the high-temperature emissions to below the ignition point and discharging them through the exhaust holes 1413 and the first explosion-proof valve 111, and further improving the overall safety performance of the battery pack 100 and the electrical device.

[0046] It should be noted that the first direction may be the length direction of the heat exchange member 141, corresponding to Figure 6 the X direction in Figure 6 . The second direction is the width direction of the heat exchange member 141, corresponding to

[0047] the Y direction in Figure 2 and Figure 3 . As shown in

[0048] In one embodiment of the present application, the battery pack 100 further includes a liquid cooling plate 150. The liquid cooling plate 150 is disposed in the box body 110 and contacts the side of the single battery 120 away from the second explosion-proof valve 121. The cooling member 142 is communicated with the liquid cooling plate 150.

[0049] In this embodiment, by disposing in the box body 110 and contacting the side of the single battery 120 away from the second explosion-proof valve 121, and communicating the cooling member 142 with the liquid cooling plate 150, the liquid cooling plate 150 can not only cool the single battery 120 to ensure the safety, performance stability and extend the service life of the battery pack 100. At the same time, the communication between the cooling member 142 and the liquid cooling plate 150 can also enable the cooling member 142 to have a cooling function, thereby cooling the heat exchange member 141 and the high-temperature emissions. Figure 2 and Figure 3 . As shown in

[0050] In this embodiment, the liquid cooling plate 150 contacts the side of the single cell 120 away from the second explosion-proof valve 121. By connecting the first liquid cooling flow channel 152 to the first liquid inlet 151 and the first liquid outlet 153 respectively, part of the coolant (such as cooling water) can enter the first liquid cooling flow channel 152 through the first liquid inlet 151 and be discharged through the first liquid outlet 153 to absorb the heat generated by the single cell 120. When the coolant leaves the liquid cooling plate 150, this part of the heat is carried away from the battery pack 100, thus realizing the heat dissipation of the single cell 120.

[0051] Meanwhile, by connecting the second liquid cooling flow channel to the second liquid inlet 1421 and the second liquid outlet 1422 respectively, connecting the first liquid inlet 151 to the second liquid inlet 1421, and connecting the first liquid outlet 153 to the second liquid outlet 1422, another part of the coolant can enter the second liquid cooling flow channel through the first liquid inlet 151 and the second liquid inlet 1421 and be discharged through the second liquid outlet 1422 and the first liquid outlet 153 to absorb the heat of the heat exchange member 141 and the high-temperature emissions. When the coolant leaves the cooling member 142, this part of the heat is carried away from the battery pack 100, thus realizing the cooling of the high-temperature emissions.

[0052] As Figure 2 and Figure 3 shown, in the above-mentioned embodiment of the present application, the liquid cooling plate 150 further has a first liquid inlet pipe 154 and a first liquid outlet pipe 155, the cooling member 142 further has a second liquid inlet pipe 1423 and a second liquid outlet pipe 1424. The first liquid inlet pipe 154 penetrates through the box body 110 and is connected to the first liquid inlet 151, the first liquid outlet pipe 155 penetrates through the box body 110 and is connected to the first liquid outlet 153, the second liquid inlet pipe 1423 is connected to the first liquid inlet 151 and the second liquid inlet 1421 respectively, and the second liquid outlet pipe 1424 is connected to the first liquid outlet 153 and the second liquid outlet 1422 respectively.

[0053] In this embodiment, by penetrating the first liquid inlet pipe 154 through the box body 110 and connecting it to the first liquid inlet 151, and penetrating the first liquid outlet pipe 155 through the box body 110 and connecting it to the first liquid outlet 153, the coolant container outside the box body 110 is connected to the liquid cooling plate 150, thus realizing the coolant circulation function and further realizing the heat dissipation of the single cell 120.

[0054] Meanwhile, by connecting the second liquid inlet pipe 1423 to the first liquid inlet 151 and the second liquid inlet 1421 respectively, and connecting the second liquid outlet pipe 1424 to the first liquid outlet 153 and the second liquid outlet 1422 respectively, the liquid cooling plate 150 is connected to the cooling member 142, thus realizing the cooling of the high-temperature emissions.

[0055] As Figure 3 and Figure 5 shown, in any of the above embodiments of the present application, a first sealing and insulating adhesive layer 160 is provided between the exhaust member 130 and the single cell 120. The first sealing and insulating adhesive layer 160 is in contact with the exhaust member 130 and the single cell 120 respectively, and the first sealing and insulating adhesive layer 160 is provided with first avoidance holes 161 respectively communicating with the intake hole 133 and the second explosion-proof valve 121.

[0056] In this embodiment, by providing a first sealing and insulating adhesive layer 160 that is in contact with the exhaust member 130 and the single cell 120 respectively between the exhaust member 130 and the single cell 120, and opening first avoidance holes 161 that are respectively communicated with the intake hole 133 and the second explosion-proof valve 121 on the first sealing and insulating adhesive layer 160. In this way, on the one hand, it can play a role in sealing the gap between the exhaust member 130 and the single cell 120, so that the high-temperature emissions discharged by the second explosion-proof valve 121 can be discharged through the first avoidance holes 161, the intake hole 133, the exhaust passage 131 and the opening 132 in sequence, avoiding the leakage of high-temperature emissions into the space of the box body 110 through the gap between the exhaust member 130 and the single cell 120, resulting in thermal runaway diffusion and combustion explosion of the battery pack 100.

[0057] On the other hand, it can also play a role in insulating and isolating the single cell 120 and the exhaust member 130, so that there is an electrical gap between the single cell 120 and the exhaust member 130, thereby avoiding the technical problem of short circuit caused by the contact between the exhaust member 130 and the single cell 120. At the same time, it can also play a role in bonding and fixing the relative positions between the exhaust member 130 and the single cell 120, so that the exhaust member 130 is stably installed on the single cell 120, thereby ensuring the stability and reliability of the exhaust of the exhaust member 130 and reducing the probability of thermal runaway diffusion and combustion explosion of the battery pack 100.

[0058] As Figure 3 and Figure 5 shown, in any of the above embodiments of the present application, a second sealing and insulating adhesive layer 170 is provided between the exhaust member 130 and the cooling assembly 140. The second sealing and insulating adhesive layer 170 is in contact with the exhaust member 130 and the cooling assembly 140 respectively, and the second sealing and insulating adhesive layer 170 is provided with second avoidance holes 171 respectively communicating with the opening 132 and the through hole 1412.

[0059] In this embodiment, a second sealing and insulating adhesive layer 170 that is in contact with the exhaust member 130 and the cooling assembly 140 respectively is provided between the exhaust member 130 and the cooling assembly 140, and a second avoidance hole 171 that is in communication with the opening 132 and the through hole 1412 respectively is formed in the second sealing and insulating adhesive layer 170. In this way, on the one hand, it can play a role in sealing the gap between the exhaust member 130 and the cooling assembly 140, so that the high-temperature emissions can enter the heat exchange chamber 143 in sequence through the opening 132, the second avoidance hole 171 and the through hole 1412, avoiding the leakage of the high-temperature emissions into the space of the box body 110 through the gap between the exhaust member 130 and the cooling assembly 140, which may cause thermal runaway diffusion and combustion explosion of the battery pack 100.

[0060] On the other hand, it can also play a role in adhesively fixing the relative positions between the exhaust member 130 and the cooling assembly 140, so that one end of the exhaust member 130 close to the opening 132 is stably installed on the cooling assembly 140, thereby ensuring the stability and reliability of the connection between the exhaust member 130 and the cooling assembly 140, reducing the probability of thermal runaway diffusion and combustion explosion of the battery pack 100, and improving the overall safety performance of the battery pack 100 and the electrical device.

[0061] In any of the above embodiments of the present application, a third sealing and insulating adhesive layer is provided between the heat exchange member 141 and the inner wall of the box body 110. The third sealing and insulating adhesive layer is in contact with the heat exchange member 141 and the inner wall of the box body 110 respectively, and the third sealing and insulating adhesive layer is provided with third avoidance holes that are in communication with the exhaust hole 1413 and the first explosion-proof valve 111 respectively.

[0062] In this embodiment, a third sealing and insulating adhesive layer that is in contact with the heat exchange member 141 and the inner wall of the box body 110 respectively is provided between the heat exchange member 141 and the inner wall of the box body 110, and third avoidance holes that are in communication with the exhaust hole 1413 and the first explosion-proof valve 111 respectively are formed in the third sealing and insulating adhesive layer. In this way, on the one hand, it can play a role in sealing the gap between the heat exchange member 141 and the inner wall of the box body 110, so that the cooled emissions can be smoothly discharged to the outside of the box body 110 in sequence through the exhaust hole 1413, the third avoidance hole and the first explosion-proof valve 111, avoiding the leakage of the cooled emissions into the space of the box body 110 through the gap between the heat exchange member 141 and the inner wall of the box body 110.

[0063] On the other hand, it can also play a role in adhesively fixing the relative positions between the heat exchange member 141 and the inner wall of the box body 110, so that the heat exchange member 141 is stably installed in the box body 110, thereby ensuring the stability and reliability of the connection between the heat exchange member 141 and the first explosion-proof valve 111, reducing the probability of thermal runaway diffusion and combustion explosion of the battery pack 100, and improving the overall safety performance of the battery pack 100 and the electrical device.

[0064] In any of the above embodiments of the present application, a fourth sealing and insulating adhesive layer is provided between the heat exchanger 141 and the cooling member 142, and the fourth sealing and insulating adhesive layer is in contact with the heat exchanger 141 and the cooling member 142 respectively.

[0065] In this embodiment, by providing a fourth insulating and sealing adhesive layer between the heat exchanger 141 and the cooling member 142 that is in contact with the heat exchanger 141 and the cooling member 142 respectively. In this way, on the one hand, it can play a role in sealing the gap between the heat exchanger 141 and the cooling member 142, avoiding the leakage of the emissions in the heat exchange chamber 143 into the space of the box body 110 through the gap between the heat exchanger 141 and the cooling member 142.

[0066] On the other hand, it can also play a role in bonding and fixing the relative positions of the heat exchanger 141 and the cooling member 142, making the heat exchanger 141 and the cooling member 142 firmly connected, thereby ensuring the stability and reliability of the seal between the heat exchanger 141 and the cooling member 142, and further reducing the probability of the emissions in the heat exchange chamber 143 leaking into the space of the box body 110 through the gap between the heat exchanger 141 and the cooling member 142. Furthermore, the probability of thermal runaway diffusion and combustion explosion of the battery pack 100 is reduced, and the overall safety performance of the battery pack 100 and the electrical device is improved.

[0067] The embodiment of the present application also provides an electrical device, including the battery pack 100 in any of the above embodiments.

[0068] This electrical device has the battery pack 100 in any of the above embodiments, so it has all the beneficial effects of the battery pack 100, which will not be elaborated here one by one.

[0069] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0070] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A battery pack, characterized in that: include: A box body (110), wherein the box body (110) has a first explosion-proof valve (111); A single cell (120) is arranged in the box (110), and one side of the single cell (120) is provided with a second explosion-proof valve (121); An exhaust member (130) is arranged in the box body (110), the exhaust member (130) has an exhaust passage (131) with an opening (132) at one end, the exhaust member (130) is arranged on a side of the single battery (120) having the second explosion-proof valve (121), and has an air inlet (133) respectively connected to the exhaust passage (131) and the second explosion-proof valve (121); A cooling component (140) is arranged in the box body (110); one end of the exhaust component (130) having the opening (132) is connected to the cooling component (140); the cooling component (140) comprises a heat exchange component (141) and a cooling component (142); the cooling component (142) is arranged on the side of the heat exchange component (141) facing the single battery (120), and is enclosed with the heat exchange component (141) to form a heat exchange cavity (143); the heat exchange component (141) is provided with a through hole (1412) respectively connected to the heat exchange cavity (143) and the opening (132), and is provided with an exhaust hole (1413) connected to the heat exchange cavity (143); the first explosion-proof valve (111) covers the exhaust hole (1413).

2. The battery pack according to claim 1, characterized in that: A heat exchange fin (1414) is arranged in the heat exchange cavity (143), and the heat exchange fin (1414) is arranged on the side of the heat exchange element (141) facing the cooling element (142), and / or the heat exchange fin (1414) is arranged on the side of the cooling element (142) facing the heat exchange element (141).

3. The battery pack according to claim 2, characterized in that: The heat exchange fin (1414) is provided on a side of the heat exchange member (141) facing the cooling member (142), and the heat exchange fin (1414) is in contact with a side of the cooling member (142) away from the single battery (120).

4. The battery pack according to claim 3, characterized in that: The heat exchange element (141) has a first direction (X) and a second direction (Y), the second direction (Y) being perpendicular to the first direction (X), a plurality of heat exchange fins (1414) being provided, and the plurality of heat exchange fins (1414) being provided in a wave shape on the heat exchange element (141) along the first direction (X) or the second direction (Y).

5. The battery pack according to claim 1, characterized in that: The battery pack (100) further comprises a liquid cooling plate (150), wherein the liquid cooling plate (150) is arranged in the box body (110) and is in contact with a side of the single battery (120) away from the second explosion-proof valve (121), and the cooling member (142) is in communication with the liquid cooling plate (150).

6. The battery pack according to any one of claims 1 to 5, characterized in that: A first sealing insulating rubber layer (160) is provided between the exhaust component (130) and the single battery (120), the first sealing insulating rubber layer (160) being in contact with the exhaust component (130) and the single battery (120) respectively, and the first sealing insulating rubber layer (160) is provided with a first avoidance hole (161) respectively connected with the air inlet hole (133) and the second explosion-proof valve (121).

7. The battery pack according to any one of claims 1 to 5, characterized in that: A second sealing insulating rubber layer (170) is arranged between the exhaust component (130) and the cooling component (140), and the second sealing insulating rubber layer (170) is in contact with the exhaust component (130) and the cooling component (140) respectively, and the second sealing insulating rubber layer (170) is provided with a second avoidance hole (171) which is respectively connected to the opening (132) and the through hole (1412).

8. The battery pack according to any one of claims 1 to 5, characterized in that: A third sealing insulating rubber layer is provided between the heat exchange component (141) and the inner wall of the box body (110), the third sealing insulating rubber layer is in contact with the heat exchange component (141) and the inner wall of the box body (110) respectively, and the third sealing insulating rubber layer is provided with a third avoidance hole which is respectively connected with the exhaust hole (1413) and the first explosion-proof valve (111).

9. The battery pack according to any one of claims 1 to 5, characterized in that: A fourth sealing insulating rubber layer is provided between the heat exchange component (141) and the cooling component (142), and the fourth sealing insulating rubber layer is in contact with the heat exchange component (141) and the cooling component (142) respectively.

10. An electrical device, characterized in that: A battery pack (100) comprising any one of claims 1 to 9.

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