Battery pack and powered device

Abstract

The application provides a battery pack and a power consumption device. The battery pack comprises a box body, a battery pack and an electrical component support. The box body comprises a bottom shell and at least two beams connected in the bottom shell. The at least two beams are arranged side by side along a horizontal first direction and extend along a horizontal second direction perpendicular to the first direction. The battery pack comprises a plurality of battery monomers arranged side by side, and the battery pack is located between two beams of the at least two beams. The electrical component support comprises a support body for supporting electrical components, the support body is fixedly arranged above the battery pack and has a space between the battery pack, and the electrical component support is connected to the two beams. The battery pack can improve the utilization rate and safety and reliability of the internal space of the battery pack. The power consumption device comprises the battery pack, and the battery pack provides power for the power consumption device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery pack and a power consumption device. BACKGROUND

[0002] In the battery pack of the related art, due to the space and power limitations, the electrical components such as the BDU (Battery Disconnection Unit), the BMS (Battery Management System) and the like are usually fixed on the electrical component support above the battery pack. The electrical component support is connected to the bottom shell of the box body of the battery pack, and when the battery pack is impacted, the electrical component support has a large displacement, which is easy to hit the battery pack below, and is easy to cause the short circuit of the battery pack, thereby increasing the risk of thermal runaway of the battery pack.

[0003] The above statements are only used to provide background technical information related to the present application, and do not necessarily constitute the prior art. SUMMARY

[0004] The purpose of the present application is to provide a battery and a power consumption device, which aims to solve the problem that when the battery pack is impacted, the electrical component support has a large displacement, which is easy to hit the battery pack below, and is easy to cause the short circuit of the battery pack, thereby increasing the risk of thermal runaway of the battery pack.

[0005] The first aspect of the present application provides a battery pack, comprising: a box body, the box body comprising a bottom shell and at least two beams connected to the inside of the bottom shell, the at least two beams being arranged side by side along a horizontal first direction and extending along a horizontal second direction perpendicular to the first direction; a battery pack comprising a plurality of battery monomers arranged side by side, the battery pack being located between two beams of the at least two beams; and an electrical component support comprising a support main body for supporting electrical components, the support main body being fixedly arranged above the battery pack and having a gap between the battery pack, the electrical component support being connected to the two beams.

[0006] In the battery pack of the present application, the battery pack is located between the two beams, and the electrical component support is connected to the two beams. On the one hand, the electrical component support is fixed with the two beams and the bottom shell, and the internal space of the battery pack can be fully utilized. On the other hand, the distance between the support main body and the beam is relatively close, and the electrical component support is easy to be fixedly connected with the beam more stably. When the battery pack is impacted, the displacement of the electrical component support is not easy to occur or the displacement is small. Even if the electrical component support is displaced to a certain extent due to a more serious impact on the battery pack, the electrical component support is not easy to collide with the battery pack or the collision force is small, thereby reducing the short circuit phenomenon of the battery pack caused by the large displacement of the electrical component support hitting the battery pack, and reducing the risk of thermal runaway of the battery pack. Therefore, the utilization rate and safety and reliability of the internal space of the battery pack can be improved.

[0007] In some embodiments of the battery pack, the two ends of the support body along the first direction have first side vents respectively in communication with the space between the two beams; and / or the two ends of the support body along the horizontal second direction have second side vents respectively in communication with the space between the battery groups; and / or the support body is provided with a through hole communicating the upper and lower sides of the support body.

[0008] Once the battery pack experiences thermal runaway, the hot gas and particulate matter generated by the thermal runaway need to be discharged. The first side vents, the second side vents and the through hole provided in the battery pack are all conducive to the smooth discharge of the hot gas and particulate matter after thermal runaway, reducing the residence time of the hot gas and particulate matter in the space between the support body and the battery groups, preventing local overheating or insulation failure, reducing the further adverse effects of the hot gas and particulate matter on the battery groups, and thus improving the safety and reliability of the battery pack.

[0009] In some embodiments of the battery pack, the electrical component support includes a plurality of legs respectively connected to the two ends of the support body along the horizontal first direction, each leg being connected between the corresponding end of the support body and the beam below the corresponding end and forming a first side vent with the corresponding end and the beam below the corresponding end.

[0010] By connecting the support body and the beam with the legs, the legs occupy less space, allowing the first side vent to have a larger flow area, facilitating the smooth discharge of the hot gas and particulate matter from the first side vent after thermal runaway, reducing the residence time of the hot gas and particulate matter in the space between the support body and the battery groups, preventing local overheating or insulation failure, reducing the further adverse effects of the hot gas and particulate matter on the battery groups, and thus improving the safety and reliability of the battery pack.

[0011] In some embodiments of the battery pack, the legs on the two beams are arranged staggered along the second direction; and / or the two ends of the support body are suspended below along the second direction.

[0012] The staggered arrangement of the legs on the two beams along the second direction allows the hot gas and particulate matter at any position along the second direction after thermal runaway to be discharged from the first side vent in time, thus improving the safety and reliability of the battery pack.

[0013] The suspension of the two ends of the support body below along the second direction facilitates the first side vent to have a larger flow area, and the hot gas and particulate matter can be discharged from the first side vent in time, thus improving the safety and reliability of the battery pack.

[0014] In some embodiments of the battery pack, the legs are made of a strip, and the thickness direction of the strip is perpendicular to the first direction.

[0015] The support leg is made of a strip, and the thickness direction of the strip is perpendicular to the first direction, so that the support leg can occupy the least ventilation area between the support body and the beam, thereby facilitating the timely discharge of hot gas and particulate matter from between the support body and the beam after thermal runaway, and thereby improving the safety and reliability of the battery pack.

[0016] In the battery pack of some embodiments, the support leg comprises: a first strip segment extending along the second direction; two second strip segments extending along the second direction and respectively located below two ends of the first strip segment along the second direction; and two third strip segments extending along a third direction perpendicular to the first direction and the second direction and respectively located at the two ends of the first strip segment along the second direction, the third strip segments connecting a corresponding end of the first strip segment and an end of the second strip segment adjacent to the corresponding end.

[0017] The support leg comprises the first strip segment, the two second strip segments, and the two third strip segments, so that the support leg is not prone to deformation along the first direction, the second direction, and the third direction, thereby reducing the displacement of the support body that can be generated when the battery pack is impacted, and thereby improving the safety and reliability of the battery pack.

[0018] In the battery pack of some embodiments, the support body is a mounting plate for carrying electrical components.

[0019] The support body is a mounting plate for carrying electrical components, which facilitates the utilization of the internal space of the battery pack and facilitates the formation of the first side ventilation opening and the second side ventilation opening with larger flow areas, thereby facilitating the timely discharge of hot gas and particulate matter from between the support body and the battery pack or the beam after thermal runaway, and thereby improving the safety and reliability of the battery pack.

[0020] In the battery pack of some embodiments, the battery pack comprises a plurality of electrical component supports arranged side by side along the first direction; and / or the battery pack comprises a plurality of electrical component supports arranged side by side along the second direction.

[0021] By providing a plurality of electrical component supports, the flexibility of the internal structure arrangement of the battery pack and the flexibility of the electrical component arrangement can be increased, thereby improving the utilization of the internal space of the battery pack.

[0022] In the battery pack of some embodiments, the battery monomer comprises an explosion-proof valve arranged at the top thereof, and at least one through hole is arranged corresponding to at least one explosion-proof valve.

[0023] At least one through hole is arranged corresponding to at least one explosion-proof valve, which facilitates the direct discharge of at least part of the hot gas ejected from the explosion-proof valve through the corresponding through hole, thereby reducing the residence time of the hot gas in the gap between the support body and the battery pack, and thereby improving the safety and reliability of the battery pack.

[0024] In the battery pack of some embodiments, the through hole is shaped the same as the exhaust port of the corresponding explosion-proof valve; and / or the flow area of the through hole is larger than the flow area of the exhaust port of the corresponding explosion-proof valve.

[0025] Both that the through hole is shaped the same as the exhaust port of the corresponding explosion-proof valve and that the flow area of the through hole is larger than the flow area of the exhaust port of the corresponding explosion-proof valve are conducive to the hot gas spouted from the explosion-proof valve being directly and quickly discharged from the corresponding through hole, thereby being conducive to improving the safety reliability of the battery pack.

[0026] The second aspect of the present application provides a power-using device, which comprises the battery pack of the first aspect of the present application, and the battery pack is used to provide power for the power-using device.

[0027] The power-using device provided by the present application has the same advantages as the battery pack provided by the present application.

[0028] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the following drawings. BRIEF DESCRIPTION OF DRAWINGS

[0029] The accompanying drawings, which are included to provide a further understanding of the present application, constitute a part of the present application and illustrate exemplary embodiments of the present application and its description, which serve to explain the present application and do not constitute improper limitations on the present application. In the drawings:

[0030] Figure 1 A structural schematic diagram of a power-using device of some embodiments of the present application.

[0031] Figure 2 A structural schematic diagram of a battery pack provided by some embodiments of the present application, wherein the cover of the box is not shown.

[0032] Figure 3 A structural schematic diagram of a battery cell of the battery pack of some embodiments of the present application.

[0033] Figure 4 A top view structural schematic diagram of the battery pack provided by some embodiments of the present application, wherein the cover of the box is not shown.

[0034] Figure 5 A structural schematic diagram of a leg of an electrical component support of the battery pack of some embodiments of the present application.

[0035] Figures 1 to 5 In the drawings, the respective reference numerals represent:

[0036] D, a power-using device;

[0037] B, a battery pack;

[0038] 1, a box; 11, a bottom shell; 13, a beam;

[0039] 2, battery pack; 20, battery cell; 201, shell; 202, end cover; 203, electrode terminal; 204, explosion-proof valve;

[0040] 3, electrical component support; 31, support body; 311, through hole; 32, leg; 321, first slat segment; 322, second slat segment; 323, third slat segment;

[0041] V1, first side vent; V2, second side vent. DETAILED DESCRIPTION

[0042] The embodiments of the present application will be further described in details below with reference to the drawings and examples. The detailed description and drawings of the following examples are used to exemplarily illustrate the principles of the present application, but cannot be used to limit the scope of the present application, i.e., the present application is not limited to the described examples.

[0043] In the description of the present application, it is necessary to point out that, unless otherwise specified, the meaning of "a plurality of" is more than two; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer" and the like only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly vertical, but within the allowable range of error. "Parallel" is not strictly parallel, but within the allowable range of error.

[0044] The orientation words appearing in the following description are the directions shown in the drawings, and are not a limitation on the specific structure of the present application. In the description of the present application, it is also necessary to point out that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as there is no conflict between them.

[0046] During the formation of the present application, the inventors found that, as described in the background, the electrical component support of the related art battery pack is prone to large displacement when the battery pack is impacted, which is likely to hit the battery pack below, causing short circuit of the battery pack and increasing the risk of thermal runaway of the battery pack. In addition, the design of the electrical component support of the related art battery pack does not consider the problem of obstruction of the exhaust passage for exhaust gas and particulate matter by the electrical component support after thermal runaway of the battery pack, which causes the exhaust gas and particulate matter to be unable to be discharged in time, which may cause additional secondary disasters to the battery pack, causing further thermal runaway of the battery pack, and even fire, causing damage to the electrical equipment and related personnel such as the driver.

[0047] Therefore, the present application proposes a battery pack, which is beneficial to solve the problems caused by the deformation and large displacement of the electrical component support of the battery pack when the battery pack is impacted by reasonably setting the position, structure and connection mode of the electrical component support. Further, it can also solve the problem of obstruction of the exhaust passage after thermal runaway of the electrical component support arranged in the battery pack, thereby further improving the utilization rate and safety and reliability of the internal space of the battery pack. Further, the present application also proposes an electrical equipment comprising the battery pack.

[0048] The battery pack is configured to provide electrical energy to the electrical equipment. The electrical equipment can be, but is not limited to, a mobile phone, a portable device, a notebook computer, an electric vehicle, an electric vehicle, a ship, a spacecraft, an electric toy and an electric tool, etc. For example, the spacecraft includes an airplane, a rocket, a space shuttle and a spacecraft, etc. The electric toy includes a fixed or mobile electric toy, for example, a game console, an electric vehicle toy, an electric ship toy and an electric aircraft toy, etc. The electric tool includes a metal cutting electric tool, a grinding electric tool, an assembly electric tool and a railway electric tool, for example, an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator and an electric planer.

[0049] The battery pack refers to a single physical module comprising one or more battery cells to provide higher voltage and capacity. The battery pack generally comprises a box for packaging one or more battery cells. The box can avoid the influence of liquid or other foreign matters on the charging or discharging of the battery cells.

[0050] The battery cell refers to the smallest unit that constitutes a battery. In the present application, the battery cell can include a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead-acid battery, etc., which are not limited by the embodiments of the present application. The battery cell can be in the form of a flat body, a cuboid or other shapes, etc., which are not limited by the embodiments of the present application. The battery cell is generally packaged as a square battery cell and a soft pack battery cell, which are not limited by the embodiments of the present application.

[0051] The battery pack further comprises electrical components such as a BDU, a BMS, etc. The BDU has multiple functions such as charge and discharge control, high-voltage component power-on control, circuit overload and short-circuit protection, high-voltage sampling, and low-voltage control, and mainly functions to provide power management and protection for the high-voltage system of the electrical equipment and ensure stable operation of the high-voltage system. The BMS is mainly used to monitor parameters such as voltage, temperature, and current of the battery monomer, realize functions such as balanced charge and discharge, protection, and fault diagnosis of the battery, and ensure safety and stability of the battery pack. The electrical components such as the BDU and the BMS are carried and fixed on the top of the battery pack by the electrical component support.

[0052] In the description of the present application, the first direction X is a horizontal direction, which corresponds to the front-rear direction in Figure 2 , and also corresponds to the left-right direction in Figure 4 , and also corresponds to the length direction of the battery pack; the second direction Y is a horizontal direction perpendicular to the first direction X, which corresponds to the left-right direction in Figure 2 , and also corresponds to the up-down direction in Figure 4 , and also corresponds to the width direction of the battery pack; the third direction Z is a vertical direction, which corresponds to the up-down direction in Figure 2 , and also corresponds to the direction perpendicular to the paper in Figure 4 , and also corresponds to the height direction of the battery pack.

[0053] As shown in Figure 2 and Figure 4 , the battery pack B provided by the embodiments of the present application comprises a box body 1, a battery pack 2, and an electrical component support 3. The box body 1 comprises a bottom shell 11 and at least two beams 13 connected to the inside of the bottom shell 11. The at least two beams 13 are arranged side by side along the horizontal first direction X and extend along the horizontal second direction Y perpendicular to the first direction X. The battery pack 2 comprises a plurality of battery monomers 20 arranged side by side, and the battery pack 2 is located between two beams 13 of the at least two beams 13. The electrical component support 3 comprises a support main body 31 for supporting electrical components, the support main body 31 is fixedly arranged above the battery pack 2 and has a gap between the battery pack 2, and the electrical component support 3 is connected to the two beams 13.

[0054] In the battery pack, the battery pack 2 is located between the two beams 13, and the electrical component support 3 is connected to the two beams 13. On the one hand, the electrical component support 3 is fixed by the two beams 13 and the bottom shell 11, and the internal space of the battery pack can be fully utilized. On the other hand, the distance between the support body 31 and the beam 13 is relatively close, and the electrical component support 3 is easily and stably fixed and connected with the beam 13. When the battery pack is impacted, displacement is not easy to occur or the displacement amount is small. Even if the electrical component support 3 is displaced to a certain extent due to a more serious impact on the battery pack, the electrical component support 3 is not easy to collide with the battery pack 2, or even if a collision occurs, the collision force is small, thereby reducing the short circuit phenomenon of the battery pack 2 caused by the large displacement of the electrical component support 3 hitting the battery pack 2, reducing the risk of thermal runaway of the battery pack, and thus the utilization rate and safety and reliability of the internal space of the battery pack can be improved.

[0055] As shown in Figure 2 and Figure 4 In some embodiments of the battery pack B, the two ends of the support body 31 along the first direction X have first side vents V1 in communication with the gap between the two beams 13, respectively; and / or the two ends of the support body 31 along the horizontal second direction Y have second side vents V2 in communication with the gap between the battery pack 2, respectively; and / or the support body 31 is provided with a through hole 311 communicating the upper and lower sides of the support body 31.

[0056] Once the battery pack experiences thermal runaway, the hot gas and particulate matter generated by the thermal runaway need to be discharged. The first side vent V1, the second side vent V2 and the through hole 311 provided in the battery pack are all conducive to the smooth discharge of the hot gas and particulate matter after thermal runaway, reducing the residence time of the hot gas and particulate matter in the gap between the support body 31 and the battery pack 2, preventing local overheating or insulation failure, reducing the further adverse effects of the hot gas and particulate matter on the battery pack 2, and thus improving the safety and reliability of the battery pack.

[0057] As shown in Figure 2 and Figure 4 In some embodiments of the battery pack B, the electrical component support 3 includes a plurality of legs 32 connected to the two ends of the support body 31 along the horizontal first direction X, respectively. Each leg 32 is connected between the corresponding end of the support body 31 and the beam 13 below the corresponding end, and forms a first side vent V1 with the corresponding end and the beam 13 below the corresponding end.

[0058] By setting the support leg 32 to connect the support body 31 and the beam 13, the support leg 32 occupies a smaller space, which can make the first side ventilation opening V1 have a larger flow area, facilitate the smooth discharge of hot gas and particulate matter from the first side ventilation opening V1 after thermal runaway, reduce the residence time of hot gas and particulate matter in the gap between the support body 31 and the battery pack 2, prevent local overheating or insulation failure, reduce the further adverse effects of hot gas and particulate matter on the battery pack 2, and thus improve the safety and reliability of the battery pack.

[0059] As shown in Figure 2 and Figure 4 , in some embodiments of the battery pack B, the support legs 32 on the two beams 13 are arranged staggered along the second direction Y; and / or the two ends of the support body 31 are suspended below along the second direction Y.

[0060] The staggered arrangement of the support legs 32 on the two beams 13 along the second direction Y allows hot gas and particulate matter at any position along the second direction Y after thermal runaway to be discharged from the first side ventilation opening V1 in time, thereby improving the safety and reliability of the battery pack.

[0061] The suspension of the two ends of the support body 31 below along the second direction Y facilitates the second side ventilation opening V2 to have a larger flow area, and hot gas and particulate matter can be discharged from the second side ventilation opening V2 in time, thereby improving the safety and reliability of the battery pack.

[0062] As shown in Figure 2 , Figure 4 and Figure 2 , in some embodiments of the battery pack B, the support leg 32 is made of a board strip, and the thickness direction of the board strip is perpendicular to the first direction X.

[0063] As shown in Figure 4 , Figure 5 and Figure 2 , in some embodiments of the battery pack B, the support leg 32 includes a first board strip segment 321, two second board strip segments 322, and two third board strip segments 323. The first board strip segment 321 extends along the second direction Y. The two second board strip segments 322 extend along the second direction Y and are respectively located below the two ends of the first board strip segment 321 along the second direction Y. The two third board strip segments 323 extend along the third direction Z and are respectively located at the two ends of the first board strip segment 321 along the second direction Y. The third board strip segment 323 connects a corresponding end of the first board strip segment 321 and an end of the second board strip segment 322 adjacent to the corresponding end.

[0064] The support leg 32 includes a first strip segment 321, two second strip segments 322, and two third strip segments 323, so that the support leg 32 is not prone to deformation in the first direction X, the second direction Y, and the third direction Z, which is conducive to reducing the displacement of the support body 31 when the battery pack is impacted, thereby improving the safety and reliability of the battery pack.

[0065] The support leg 32 is made of a strip, and the thickness direction of the strip is perpendicular to the first direction X, so that the support leg 32 can occupy as little ventilation area as possible between the support body 31 and the beam 13, thereby being more conducive to timely discharging of hot gases and particulate matters after thermal runaway from between the support body 31 and the beam 13, thereby improving the safety and reliability of the battery pack.

[0066] In the battery pack B of some embodiments, the support body 31 is a mounting plate for carrying electrical components.

[0067] The support body 31 is a mounting plate for carrying electrical components, which is conducive to improving the utilization rate of the internal space of the battery pack and forming the first side vent V1 and the second side vent V2 with larger flow areas, thereby being more conducive to timely discharging of hot gases and particulate matters after thermal runaway from between the support body 31 and the battery pack or the beam 13, thereby improving the safety and reliability of the battery pack.

[0068] In the battery pack B of some embodiments, the battery pack B includes a plurality of electrical component supports 3 arranged side by side along the first direction X; and / or the battery pack B includes a plurality of electrical component supports 3 arranged side by side along the second direction Y.

[0069] By arranging a plurality of electrical component supports 3, the flexibility of the internal structure arrangement of the battery pack and the flexibility of the electrical component arrangement can be increased, which is conducive to improving the utilization rate of the internal space of the battery pack.

[0070] In the battery pack B of some embodiments, the battery cell 20 includes an explosion-proof valve 204 arranged at the top thereof, and at least one through hole 311 is arranged corresponding to at least one explosion-proof valve 204.

[0071] At least one through hole 311 is arranged corresponding to at least one explosion-proof valve 204, which is conducive to directly discharging at least part of the hot gases sprayed from the explosion-proof valve 204 through the corresponding through hole 311, thereby reducing the residence time of the hot gases in the gap between the support body 31 and the battery pack 2, thereby improving the safety and reliability of the battery pack.

[0072] In the battery pack B of some embodiments, the through hole 311 has the same shape as the exhaust port of the corresponding explosion-proof valve 204; and / or the flow area of the through hole 311 is greater than the flow area of the exhaust port of the corresponding explosion-proof valve 204.

[0073] The fact that the through hole 311 has the same shape as the exhaust port of the corresponding explosion-proof valve 204, and that the flow area of ​​the through hole 311 is larger than that of the exhaust port of the corresponding explosion-proof valve 204, both facilitate the rapid discharge of hot gas ejected from the explosion-proof valve 204 directly through the corresponding through hole 311, thereby improving the safety and reliability of the battery pack.

[0074] like Figure 4 As shown, the electrical device D in this embodiment includes the battery pack B, which is used to provide power to the electrical device D.

[0075] The electrical equipment in this application embodiment has the same advantages as the battery pack in this application.

[0076] The following combination Figure 5 The present application will provide a more detailed description of a battery pack B and an electrical device D having the battery pack B, according to some embodiments of the present application.

[0077] Please refer to Figure 1 . Figures 1 to 5 This is a schematic diagram of the structure of an electrical device—vehicle D—provided in some embodiments of this application. Vehicle D can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended vehicles, etc. Figure 1 The vehicle D has a battery pack B installed inside it. The battery pack B can be located at the bottom, front, or rear of the vehicle D. The battery pack B can be used to power the vehicle D, for example, it can serve as the operating power source for the vehicle D.

[0078] In some embodiments of this application, the battery pack B can not only serve as the operating power source for the vehicle D, but also as the driving power source for the vehicle D, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle D.

[0079] Figure 1 This is a schematic diagram of the structure of a battery pack B provided in some embodiments of this application. The battery pack B includes a housing 1, a battery pack 2 containing multiple battery cells 20, and an electrical component support 3 housed within the housing 1.

[0080] like Figure 2 As shown, the housing 1 includes a bottom shell 11 and a cover (not shown) that is fastened to the bottom shell 11. The housing 1 provides a space for housing the battery cells 20. In the above embodiments, the housing 1 is generally rectangular; in embodiments not shown, the housing 1 may also be other shapes, such as a cylinder. In some embodiments, the housing may be part of the vehicle's chassis structure. For example, a portion of the housing may be at least a part of the vehicle's floor, or a portion of the housing may be at least a part of the vehicle's crossbeams and longitudinal beams.

[0081] In the battery pack B, the plurality of battery cells 20 of the battery pack 2 can be connected in series, in parallel, or in a mixed connection. The plurality of battery cells 20 can be directly connected in series, in parallel, or in a mixed connection, and the battery pack 2 formed by the plurality of battery cells 20 can be accommodated in the case 1.

[0082] As shown in FIG. 1, the case 1 includes a bottom shell 11 and a top shell 12. The bottom shell 11 is arranged on the ground and the top shell 12 is arranged on the bottom shell 11. The plurality of battery cells 20 of the battery pack 2 are accommodated in the case 1. Figure 2 As shown in FIG. 2, the bottom shell 11 is provided with a plurality of beams 13 arranged at intervals along a first direction X. The plurality of beams 13 divide the internal space of the bottom shell 11 into a plurality of subspaces. Each beam 13 extends along a second direction Y. The battery pack B includes a plurality of battery packs 2. The plurality of battery packs 2 are respectively located in the plurality of subspaces. An electrical component support 3 is connected above one battery pack 2 and is mounted on two beams 13 at both ends of the battery pack 2 along the first direction X.

[0083] Figure 2 A schematic view of the structure of the battery cell 20 of the battery pack B of some embodiments of the present application. As shown in FIG. 3, the battery cell 20 mainly includes an electrode assembly (not shown), a shell 201, and an end cap assembly. Figure 2

[0084] The electrode assembly is encapsulated in the accommodation space of the shell by the end cap of the end cap assembly. The accommodation space is filled with electrolyte. The electrode assembly of the battery cell 20 is the component where the electrochemical reaction occurs.

[0085] The shell 201 is a component for providing an accommodation space to accommodate the electrode assembly, the electrolyte, and other components therein. The shell 201 can be of various shapes and sizes, such as a cuboid, a cylinder, a hexagonal prism, etc. The material of the shell 201 can be selected from copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0086] The end cap assembly includes an end cap 202, an electrode terminal 203, and an explosion-proof valve 204 arranged on the end cap 202. The end cap 202 covers the opening of the shell 201 to isolate the internal environment of the battery cell 20 from the external environment. The shape of the end cap 202 can be adapted to the shape of the shell 201 to fit the shell 201. The material of the end cap 202 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not limited by the embodiments of the present application. The electrode terminal 203 can be used to electrically connect with the electrode assembly of the battery cell 20 for outputting or inputting the electrical energy of the battery cell 20. The explosion-proof valve 204 can be installed at a pressure relief hole (not shown) on the end cap 202 for releasing the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold value.

[0087] As shown in FIG. 4 and FIG. 5, the electrical component support 3 includes a support body 31 and a plurality of legs 32. Figure 3 Figure 3 As shown in FIG. 4 and FIG. 5, the electrical component support 3 includes a support body 31 and a plurality of legs 32.

[0088] ​​The support body 31 is used for supporting electrical components. The support body 31 is fixedly connected to the two beams 13 by a plurality of legs 32, and is located above the battery pack 2 with a spacing between the support body 31 and the battery pack 2.

[0089] The support body 31 is a mounting plate. The mounting plate is provided with a plurality of through holes 311 which are in communication with the upper and lower sides of the mounting plate. The battery cells 20 include explosion-proof valves 204 arranged on the top of the battery cells 20, and the plurality of through holes 311 are arranged in one-to-one correspondence with the plurality of explosion-proof valves 204 of the battery cells 20. Each through hole 311 has the same shape as the exhaust port of the corresponding explosion-proof valve 204. The flow area of each through hole 311 is greater than the flow area of the exhaust port of the corresponding explosion-proof valve 204.

[0090] As shown in Figure 2 and Figure 4 , the two ends of the mounting plate along the first direction X have first side vents V1 in communication with the spacing between the two beams 13, respectively. The two ends of the mounting plate along the second direction Y have second side vents V2 in communication with the spacing between the battery pack 2, respectively.

[0091] As shown in Figure 2 and Figure 4 , each of the two ends of the mounting plate along the horizontal first direction X is provided with a plurality of legs 32, and the plurality of legs 32 of each of the two ends are arranged in a spaced manner along the second direction Y. Along the second direction Y, the legs 32 on the two beams 13 are arranged in a staggered manner. Along the second direction Y, the two ends of the mounting plate (support body 31) are suspended below. Each leg 32 is connected between the corresponding end of the mounting plate and the beam 13 below the corresponding end, and forms a first side vent V1 with the corresponding end and the beam 13 below the corresponding end.

[0092] As shown in Figure 2 , Figure 4 and Figure 2 Figure 4 Figure 5 , the leg 32 is made of a strip, and the thickness direction of the strip is perpendicular to the first direction X. The leg 32 includes a first strip segment 321, two second strip segments 322 and two third strip segments 323. The first strip segment 321 extends along the second direction Y. The two second strip segments 322 extend along the second direction Y and are located below the two ends of the first strip segment 321 along the second direction Y, respectively. The two third strip segments 323 extend along the third direction Z and are located at the two ends of the first strip segment 321 along the second direction Y, respectively. The third strip segment 323 connects the corresponding end of the first strip segment 321 and one end of the second strip segment 322 adjacent to the corresponding end. The first strip segment 321, the two second strip segments 322 and the two third strip segments 323 of the leg 32 form a U-shaped structure. The U-shaped structure of the leg 32 makes it difficult for the support body 31 to displace along the first direction X, the second direction Y and the third direction Z.

[0093] The leg 32 is detachably connected with the mounting plate (support body 31) and the beam 13, respectively. The leg 32 can be connected with the mounting plate (support body 31) or the leg 32 and the beam 13 by screws, for example.

[0094] According to the above description, the battery pack B of the embodiment has at least one of the following advantages:

[0095] The two groups of legs 32 and the two beams 13 are fixedly connected with the two ends of the support body 31 along the first direction X, which can make the installation of the support body 31 in the battery pack B more stable, improve the stability of the electrical components fixed on the electrical component support 3, and improve the space utilization and safety and reliability inside the battery pack B.

[0096] The first side vent V1 is arranged below the two ends of the support body 31 along the first direction X, the second side vent V2 is arranged below the two ends of the support body 31 along the second direction Y, and the through hole 311 is arranged on the support body 31, so that the hot gas and particles after thermal runaway can be discharged from the first side vent V1, the second side vent V2 and the through hole 311, which can solve the problem of blocking of the exhaust passage due to arrangement of the electrical component support, thereby further improving the safety and reliability of the battery pack.

[0097] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application and not to limit them; although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the specific embodiments of the present application can be modified or some technical features can be replaced by equivalent ones, which should be covered in the technical solution range claimed by the present application.

Claims

1. A battery pack (B), characterized in that, include: The box body (1) includes a bottom shell (11) and at least two beams (13) connected to the bottom shell (11). The at least two beams (13) are arranged side by side along a horizontal first direction (X) and extend along a horizontal second direction (Y) perpendicular to the first direction (X). A battery pack (2) comprising a plurality of battery cells (20) arranged side by side, the battery pack (2) being located between two of the at least two beams (13), each battery cell (20) comprising an explosion-proof valve (204) disposed on its top; and The electrical component bracket (3) includes a support body (31) for supporting electrical components. The support body (31) is fixedly disposed above the battery pack (2) and has a gap between it and the battery pack (2). The electrical component bracket (3) is connected to the two beams (13). The support body (31) is provided with through holes (311) connecting the upper and lower sides of the support body (31). Multiple through holes (311) are provided one-to-one with the explosion-proof valves (204) of multiple battery cells (20) so that at least part of the hot gas ejected from the explosion-proof valves (204) can be directly discharged from the corresponding through holes (311).

2. The battery pack (B) according to claim 1, characterized in that, The supporting body (31) has a first side ventilation opening (V1) communicating with the spacer at both ends along the first direction (X) between itself and the two beams (13); and / or The support body (31) has a second side vent (V2) communicating with the spacer at both ends of the second horizontal direction (Y) and the battery pack (2).

3. The battery pack (B) according to claim 2, characterized in that, The electrical component bracket (3) includes a plurality of legs (32) respectively connected to both ends of the support body (31) along a first horizontal direction (X). Each leg (32) is connected between a corresponding end of the support body (31) and a beam (13) below the corresponding end, and forms the first side ventilation opening (V1) with the corresponding end and the beam (13) below the corresponding end.

4. The battery pack (B) according to claim 3, characterized in that, Along the second direction (Y), the supports (32) on the two beams (13) are staggered; and / or Along the second direction (Y), the two ends of the support body (31) are suspended in the air.

5. The battery pack (B) according to claim 3, characterized in that, The support leg (32) is made of a slat, the thickness of which is perpendicular to the first direction (X).

6. The battery pack (B) according to claim 5, characterized in that, The support leg (32) includes: The first slat segment (321) extends along the second direction (Y); Two second slat segments (322), extending along the second direction (Y), are respectively located below the two ends of the first slat segment (321) along the second direction (Y); and Two third slat segments (323) extend along a third direction (Z) perpendicular to the first direction and the second direction, respectively located at both ends of the first slat segment (321) along the second direction (Y), and the third slat segment (323) connects a corresponding end of the first slat segment (321) and an end of the second slat segment (322) adjacent to the corresponding end.

7. The battery pack (B) according to claim 2, characterized in that, The supporting body (31) is a mounting plate used to support electrical components.

8. The battery pack (B) according to any one of claims 1 to 7, characterized in that, The battery pack (B) includes a plurality of electrical component brackets (3) arranged side-by-side along the first direction (X); and / or The battery pack (B) includes a plurality of electrical component brackets (3) arranged side by side along the second direction (Y).

9. The battery pack (B) according to any one of claims 1 to 7, characterized in that, The through hole (311) has the same shape as the exhaust port of the corresponding explosion-proof valve (204); and / or The flow area of ​​the through hole (311) is greater than the flow area of ​​the exhaust port of the corresponding explosion-proof valve (204).

10. An electrical device (D) comprising a battery pack (B), characterized in that, The battery pack (B) is the battery pack (B) according to any one of claims 1 to 9, and the battery pack (B) is used to provide power to the electrical equipment (D).

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