Battery module, battery pack and electric equipment

Abstract

The utility model discloses a battery module, a battery pack and electric equipment, and belongs to the technical field of batteries. The utility model relates to a battery module, which comprises a plurality of battery cells which are orderly stacked along a first direction; the heat spreading restraining device comprises a movement mechanism and a clamping and bearing mechanism, the movement mechanism comprises a driving part and a movement part, and the output end of the driving part is connected with the movement part so as to drive the movement part to move in the first direction; the clamping and bearing mechanism comprises a driving part and a clamping and bearing part, the output end of the driving part is connected with the clamping and bearing part, the clamping and bearing part is connected with the moving part, the battery cell is connected with the clamping and bearing part, the moving part drives the clamping and bearing part to move in the first direction, and the driving part drives the clamping and bearing part to move in the second direction; the first direction is perpendicular to the second direction, and the second direction is perpendicular to the first direction. The battery pack comprises the battery module provided by the invention. The problem of heat spreading of the battery can be solved at least, and the risk of thermal runaway of the battery cell is reduced.

Description

Technical Field

[0001] The present application belongs to the field of battery technology, and specifically relates to a battery module, a battery pack and an electrical device. Background Art

[0002] At present, the batteries used for energy storage are basically lithium batteries. Due to the high energy density of lithium batteries, there are concerns about the safety of lithium batteries. Among them, thermal runaway and heat spread are one of the main concerns about lithium battery safety. When a single battery in a battery module experiences thermal runaway, it will release a large amount of heat in a short period of time, causing thermal runaway of the surrounding adjacent batteries, that is, heat spread.

[0003] In the related art, the control methods for the heat spread risk of battery modules mainly include: (1) using fire-resistant insulation materials with a small thermal conductivity to isolate the transfer of heat; (2) releasing fire extinguishing agents when heat spread occurs.

[0004] However, the above control technology cannot quickly and effectively control the thermal spread of the battery. Therefore, there is still a need for improvement in the battery pack in the related art. Utility Model Content

[0005] In view of the above problems, the present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the present invention provides a battery module, a battery pack and an electrical device, which can effectively prevent the heat spread of the battery module and reduce the risk of thermal runaway of the battery cell.

[0006] In order to solve the above technical problems, this application is implemented as follows:

[0007] According to one aspect of the present application, an embodiment of the present application provides a battery module, which includes:

[0008] A plurality of battery cells, wherein the plurality of battery cells are stacked in an orderly manner along a first direction;

[0009] A heat spread suppression device, the heat spread suppression device comprising a motion mechanism and a clamping bearing mechanism, the motion mechanism comprising a driving member and a moving part, the output end of the driving member being connected to the moving part for driving the moving part to move along the first direction;

[0010] The clamping bearing mechanism includes a driving part and a clamping bearing part, the output end of the driving part is connected to the clamping bearing part, and the clamping bearing part is connected to the moving part, the battery cell is connected to the clamping bearing part, the moving part is suitable for driving the clamping bearing part to move along the first direction, and the driving part is suitable for driving the clamping bearing part to move along the second direction, thereby driving the battery cell arranged on the clamping bearing part to move, and the first direction is perpendicular to the second direction.

[0011] In addition, the battery module according to the present application may also have the following additional technical features:

[0012] In some embodiments, the driving member includes a first driving member and a second driving member, and the moving part includes a first moving part and a second moving part; the output end of the first driving member is connected to the first moving part, and is used to drive the first moving part to move along the first direction; the output end of the second driving member is connected to the second moving part, and is used to drive the second moving part to move along the first direction;

[0013] The driving part includes a first driving part and a second driving part, and the clamping bearing part includes a first clamping bearing part and a second clamping bearing part; the output end of the first driving part is connected to the first clamping bearing part, and is used to drive the first clamping bearing part to move along the second direction; the output end of the second driving part is connected to the second clamping bearing part, and is used to drive the second clamping bearing part to move along the second direction.

[0014] In some embodiments, the first moving portion includes a first guide rod and a first guide member extending along the first direction, the first guide member is slidably connected to the first guide rod, and the first clamping bearing portion is connected to the first guide member;

[0015] The second moving portion includes a second guide rod and a second guide member extending along the first direction, the second guide member is slidably connected to the second guide rod, and the second clamping bearing portion is connected to the second guide member.

[0016] In some embodiments, the clamping bearing portion includes a moving component and a clamping claw assembly, the output end of the driving portion is connected to the moving component for driving the moving component to move along the second direction, and the moving component is connected to the clamping claw assembly for driving the clamping claw assembly to move along the second direction.

[0017] In some of the embodiments, protrusion structures are provided on both sides of the battery core along the second direction, and the clamping jaw assembly is connected to the protrusion structures.

[0018] In some of the embodiments, the heat spread suppression device further comprises a base frame, and at least a portion of the motion mechanism is disposed on the base frame;

[0019] The base frame is provided with a hole structure extending along the first direction, and at least a portion of the clamping bearing portion is penetrated through the hole structure and is movable in the hole structure along the first direction and / or the second direction.

[0020] In some embodiments, the base frame includes a plurality of support beams, the plurality of support beams form a receiving space for receiving the plurality of battery cells, and the plurality of support beams are used to suspend the plurality of battery cells.

[0021] In some of the embodiments, the battery module further includes a plurality of temperature detection components, and the plurality of temperature detection components are respectively disposed corresponding to the plurality of battery cells.

[0022] According to another aspect of the present application, an embodiment of the present application provides a battery pack, which includes a shell, and a plurality of battery modules as described above arranged in the shell.

[0023] According to another aspect of the present application, an embodiment of the present application provides an electrical device, which includes the battery pack.

[0024] The implementation of the technical solution of the utility model has at least the following beneficial effects:

[0025] In the embodiment of the present application, at least one of the battery cells can be carried by the clamping and carrying mechanism, and the clamping and carrying mechanism can be driven to move along the first direction by the moving mechanism, thereby realizing the movement of at least one of the battery cells along the first direction; the clamping and carrying part is driven to move along the second direction by the driving part, thereby realizing the movement of one or more of the battery cells along the second direction. Therefore, when any battery cell in the battery module has thermal runaway, the battery cells around the battery cell (battery cell) having thermal runaway, such as the battery cells on both sides of the battery cell having thermal runaway, can be moved in the direction away from the battery cell having thermal runaway respectively through the heat spread suppression device, thereby preventing the heat generated by the battery cell in thermal runaway state from being transferred to the surrounding adjacent battery cells, suppressing the heat spread of the battery module to a certain extent, reducing the risk of thermal runaway of the battery cell, and thus improving the safety of the battery module.

[0026] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A front view of a battery pack provided for some exemplary embodiments of the present application;

[0028] Figure 2 A top view of a battery pack provided for some exemplary embodiments of the present application;

[0029] Figure 3 A schematic diagram of disassembling a battery pack provided for some exemplary embodiments of the present application;

[0030] Figure 4A schematic structural diagram of a first load-bearing assembly provided for some exemplary embodiments of the present application;

[0031] Figure 5 A schematic diagram of the structure of a second bearing assembly provided for some exemplary embodiments of the present application;

[0032] Figure 6 A schematic diagram of the structure of a battery pack in a normal state provided for some exemplary embodiments of the present application;

[0033] Figure 7 A schematic diagram of the structure of a battery pack in a thermal runaway state is provided for some exemplary embodiments of the present application.

[0034] Reference numerals:

[0035] 10- Heat spread suppression device;

[0036] 11-movement mechanism; 111-first translation assembly; 1111-first linear module; 112-second translation assembly; 1121-second linear module; 113-first guide assembly; 1131-first guide rod; 1132-first guide member; 114-second guide assembly; 1141-second guide rod; 1142-second guide member;

[0037] 12-clamping bearing mechanism; 121-first bearing assembly; 1211-third linear module; 12111-first moving member; 1212-first clamping component; 12121-first clamping claw; 12122-first matching portion; 122-second bearing assembly; 1221-fourth linear module; 12211-second moving member; 1222-second clamping component; 12221-second clamping claw; 12222-second matching portion;

[0038] 13-base frame; 131-first support beam; 132-second support beam; 133-first slide rail; 134-second slide rail; 135-first slider; 136-second slider; 137-frame; 1371-first long hole; 1372-second long hole;

[0039] 20-battery module;

[0040] 21-battery core; 211-third matching portion;

[0041] 22-Electrical connector. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] See also Figures 1 to 7 As shown, in some embodiments of the present application, a battery module 20 is provided, which includes a plurality of battery cells 21 and a heat spread suppression device 10. The heat spread suppression device 10 is applied to the battery module 20, which can protect the battery module 20, effectively suppress and slow down the heat spread of the battery module 20, and improve the safety of the battery module 20. The provided battery module 20 includes a plurality of battery cells 21, and the plurality of battery cells 21 are arranged along a first direction. In addition, the battery pack includes a plurality of battery modules, and two adjacent battery modules 20 are electrically connected, such as in series or in parallel.

[0044] The heat spread suppression device 10 includes a motion mechanism 11 and a clamping and supporting mechanism 12, wherein the clamping and supporting mechanism 12 is used to support the battery cell 21, and the motion mechanism 11 is used to drive the clamping and supporting mechanism 12 and the battery cell 21 it supports to translate, so that the battery cells 21 around the battery cell 21 with thermal runaway are away from the battery cell 21 with thermal runaway, thereby playing a role in suppressing heat spread.

[0045] The above-mentioned moving mechanism 11 includes a driving member and a moving part, the output end of the driving member is connected to the moving part, and is used to drive the moving part to move along the first direction; the above-mentioned clamping bearing mechanism 12 includes a driving part and a clamping bearing part, the output end of the driving part is connected to the clamping bearing part, and the clamping bearing part is connected to the moving part of the moving mechanism 11, the battery cell is connected to the clamping bearing part, the moving part is suitable for driving the clamping bearing part to move along the first direction, thereby driving the battery cell 21 arranged on the clamping bearing part to move, and the driving part is suitable for driving the clamping bearing part to move along the second direction, so that the clamping bearing part can clamp or release the battery cell 21, and the above-mentioned first direction is perpendicular to the second direction.

[0046] Optionally, the driving member and the driving part may both be motors.

[0047] In the motion mechanism 11 of this embodiment, the driving member may include a first driving member and a second driving member, and the moving part may include a first moving part and a second moving part, wherein the first driving member and the first moving part may constitute a first translation assembly 111 and a first translation part, and the second driving member and the second moving part may constitute a second translation assembly 112 and a second translation part.

[0048] In other words, the motion mechanism 11 may have a first translation part and a second translation part, and both the first translation part and the second translation part are movable along the first direction, thereby making the first translation part and the second translation part move closer to or farther away from each other in the first direction. Optionally, both the first translation part and the second translation part may be structures such as plates or blocks, and the specific shapes are not limited.

[0049] In the clamping and supporting mechanism 12 of this embodiment, the driving part may include a first driving part and a second driving part, and the clamping and supporting part may include a first clamping and supporting part and a second clamping and supporting part, wherein the first driving part and the first clamping and supporting part may constitute a first supporting component 121, and the second driving part and the second clamping and supporting part may constitute a second supporting component 122.

[0050] The clamping bearing mechanism 12 includes a first bearing assembly 121 and a second bearing assembly 122, and the first bearing assembly 121 and the second bearing assembly 122 are respectively used to bear different battery cells 21. In some embodiments, the first bearing assembly 121 and the second bearing assembly 122 can respectively bear the battery cells 21 in a supporting manner; in other embodiments, the first bearing assembly 121 and the second bearing assembly 122 can respectively bear the battery cells 21 in a clamping manner. In addition, the first bearing assembly 121 and the second bearing assembly 122 can each have one or more connection points with the battery cells 21, which can be selected according to actual working conditions.

[0051] The first bearing assembly 121 is arranged on the first translation part, and the second bearing assembly 122 is arranged on the second translation part. The first translation part can drive the first bearing assembly 121 to move in the first direction, and the second translation part can drive the second bearing assembly 122 to move in the first direction.

[0052] In the embodiment of the present application, one of the battery cells 21 can be carried by the first bearing assembly 121, and the first translation part can drive the first bearing assembly 121 to move along the first direction, thereby realizing the movement of one of the battery cells 21 along the first direction; another battery cell 21 can be carried by the second bearing assembly 122, and the second translation part can drive the second bearing assembly 122 to move along the first direction, thereby realizing the movement of another battery cell 21 along the first direction. Therefore, when any battery cell 21 in the battery module 20 has thermal runaway, the heat spread suppression device 10 can make the battery cells 21 located on both sides of the battery cell 21 having thermal runaway move in the direction away from the battery cell 21 having thermal runaway, thereby preventing the heat generated by the battery cell 21 in the thermal runaway state from being transferred to the surrounding adjacent battery cells 21, and to a certain extent suppressing the heat spread of the battery module 20, thereby improving the safety of the battery module 20.

[0053] In this embodiment, the first direction may be the thickness direction of the battery, and the second direction may be the width direction of the battery. Alternatively, the first direction may be the x-axis direction, and the second direction may be the y-axis direction.

[0054] In some embodiments, the motion mechanism 11 includes a first translation assembly 111 and a second translation assembly 112. The first translation assembly 111 includes a first linear module 1111, which is connected to the first translation part to drive the first translation part to move in the first direction through the first linear module 1111; the second translation assembly 112 includes a geothermal linear module, which is connected to the second translation part to drive the second translation part to move in the first direction through the second linear module 1121.

[0055] Optionally, the first linear module 1111 may include a first motor, a first screw and a first sliding member (such as a slider, etc.), wherein the rotating shaft of the first motor is connected to the first screw in a transmission manner, and the first sliding member is threadedly connected to the first screw. Under the driving action of the first motor, the first screw rotates and drives the first sliding member to move in the first direction. In addition, the first translation part may be connected to the first sliding member, and of course, the first sliding member may also serve as the first translation part.

[0056] Similarly, the second linear module 1121 may include a second motor, a second screw and a second sliding member (such as a slider, etc.), wherein the rotating shaft of the second motor is transmission-connected to the second screw, and the second sliding member is threadedly connected to the second screw. Under the driving action of the second motor, the second screw rotates and drives the second sliding member to move in the first direction. In addition, the second translation part may be connected to the second sliding member, and of course, the second sliding member may also serve as the second translation part.

[0057] In other embodiments, the first linear module 1111 and the second linear module 1121 may also be in other forms, such as a cylinder, a hydraulic cylinder, etc., and the specific types are not limited.

[0058] In some of the embodiments, the motion mechanism 11 also includes a first guide component 113 and a second guide component 114, the first guide component 113 is used to guide the first bearing component 121 to ensure the movement accuracy of the first bearing component 121 in the first direction; the second guide component 114 is used to guide the second bearing component 122 to ensure the movement accuracy of the second bearing component 122 in the first direction.

[0059] The first guide assembly 113 includes a first guide rod 1131 and a first guide member 1132 extending in a first direction, the first guide member 1132 is slidably connected to the first guide rod 1131, and the first bearing assembly 121 is connected to the first guide member 1132. Based on this, the first guide member 1132 slides along the first guide rod 1131, so that the first bearing assembly 121 moves strictly along the first direction along with the first guide member 1132, so as to ensure the moving accuracy of the first bearing assembly 121 in the first direction and avoid the occurrence of a jamming situation caused by deviation.

[0060] Optionally, the first guide member 1132 may be a linear bearing, a guide sleeve or other components, which is sleeved on the outside of the first guide rod 1131 and can slide steadily and smoothly along the first guide rod 1131 .

[0061] In addition, the first guide rod 1131 and the first screw rod can be on the same horizontal plane; the first guide member 1132 and the first sliding member can be on the same horizontal plane, and the first guide member 1132 and the first sliding member can be fixed to the base of the first bearing assembly 121.

[0062] The second guide assembly 114 includes a second guide rod 1141 and a second guide member 1142 extending in the first direction, the second guide member 1142 is slidably connected to the second guide rod 1141, and the second bearing assembly 122 is connected to the second guide member 1142. Based on this, the second guide member 1142 slides along the second guide rod 1141 to make the second bearing assembly 122 move strictly along the first direction with the second guide member 1142, so as to ensure the movement accuracy of the second bearing assembly 122 in the first direction and avoid the occurrence of a jamming situation caused by deviation.

[0063] Optionally, the second guide member 1142 may be a linear bearing, a guide sleeve or the like, which is sleeved on the outside of the second guide rod 1141 and can slide steadily and smoothly along the second guide rod 1141 .

[0064] In addition, the second guide rod 1141 and the second screw rod can be on the same horizontal plane; the second guide member 1142 and the second sliding member can be on the same horizontal plane, and the second guide member 1142 and the second sliding member can be fixed to the base of the second bearing assembly 122.

[0065] In some embodiments, the first bearing assembly 121 includes a third linear module 1211 and a first clamping component 1212, wherein the third linear module 1211 includes a moving assembly, such as two first moving members 12111 that can be relatively close to or relatively far away from each other along a second direction perpendicular to the first direction, and correspondingly, the first clamping component 1212 includes a clamping jaw assembly, such as two first clamping jaws 12121, and the two first clamping jaws 12121 are respectively connected to the two first moving members 12111. In this way, under the driving action of the third linear module 1211, the two first moving members 12111 can respectively drive the two first clamping jaws 12121 to be relatively close to or relatively far away from each other in the second direction, so that the two first clamping jaws 12121 clamp the battery cell 21 from both sides in the second direction, or release the battery cell 21.

[0066] Optionally, the third linear module 1211 includes a third motor, a third screw and two third sliding members (such as a slider, etc.), wherein the rotating shaft of the third motor is connected to the third screw, and the two ends of the third screw are respectively provided with thread structures with opposite rotation directions, and the two third sliding members are respectively connected to the thread structures with opposite rotation directions, so that under the driving action of the third motor, the third screw rotates and drives the two third sliding members to be relatively close or relatively far away in the first direction. It should be pointed out that the two third sliding members can be respectively used as the two first moving members 12111, and of course, it can also be that the two third sliding members are respectively connected to the two first moving members 12111.

[0067] In addition, the first supporting component 121 may further include two first connecting arms, the two first connecting arms are respectively connected to the two first moving members 12111 , and the two first clamping jaws 12121 are respectively connected to the two first connecting arms so as to support the first clamping jaws 12121 through the first connecting arms.

[0068] The second bearing assembly 122 includes a fourth linear module 1221 and a second clamping component 1222, wherein the fourth linear module 1221 includes a moving assembly, such as two second moving members 12211 that can be relatively close to or relatively far away from each other along a second direction perpendicular to the first direction, and correspondingly, the second clamping component 1222 includes a clamping claw assembly, such as two second clamping claws 12221, and the two second clamping claws 12221 are respectively connected to the two second moving members 12211. In this way, under the driving action of the fourth linear module 1221, the two second moving members 12211 can respectively drive the two second clamping claws 12221 to be relatively close to or relatively far away from each other in the second direction, so that the two second clamping claws 12221 clamp the battery cell 21 from both sides in the second direction, or release the battery cell 21.

[0069] Optionally, the fourth linear module 1221 includes a fourth motor, a fourth screw and two fourth sliding members (such as sliders, etc.), wherein the shaft of the fourth motor is connected to the fourth screw in a transmission manner, the two ends of the fourth screw are respectively provided with thread structures with opposite rotation directions, and the two fourth sliding members are respectively connected to the thread structures with opposite rotation directions, so that under the driving action of the fourth motor, the fourth screw rotates and drives the two fourth sliding members to be relatively close or relatively far away in the first direction. It should be pointed out that the two fourth sliding members can be respectively used as the two second moving members 12211, and of course, it can also be that the two fourth sliding members are respectively connected to the two second moving members 12211.

[0070] In addition, the second bearing assembly 122 may further include two second connecting arms, the two second connecting arms are respectively connected to the two second moving members 12211 , and the two second clamping jaws 12221 are respectively connected to the two second connecting arms so as to carry the second clamping jaws 12221 through the second connecting arms.

[0071] In other embodiments, the third linear module 1211 and the fourth linear module 1221 may also be in other forms, such as a cylinder, a hydraulic cylinder, etc., and the specific types are not limited.

[0072] It should be pointed out that the positions of the above-mentioned motors can be set according to actual working conditions as long as they can meet the normal use of the device.

[0073] In some embodiments, the two first clamping jaws 12121 are respectively provided with a first matching portion 12122, and the two first matching portions 12122 are used to respectively connect with a third matching portion 211, such as a protruding structure, provided on the side of one of the battery cells 21 along the second direction. Through the corresponding matching connection between the two first matching portions 12122 and the two third matching portions 211, the two first clamping jaws 12121 can clamp and fix the two sides of one of the battery cells 21 along the second direction, thereby preventing one of the battery cells 21 from falling off.

[0074] Optionally, one of the first matching portion 12122 and the third matching portion 211 can be a protrusion or hook structure, and the other can be a groove or through hole structure; of course, other matching structures can also be used, which are not specifically limited here. In addition, the first matching portion 12122 and the third matching portion 211 can each be provided with one or more, and the number of the two can be equal, which is specifically set according to the actual working conditions.

[0075] In some embodiments, the two second clamping jaws 12221 are respectively provided with second matching portions 12222, and the two second matching portions 12222 are used to respectively connect with the third matching portions 211 provided on the side of the other battery cell 21 along the second direction. Through the corresponding matching connection between the two second matching portions 12222 and the two third matching portions 211, the two second clamping jaws 12221 can clamp and fix the two sides of the other battery cell 21 along the second direction, thereby preventing the other battery cell 21 from falling off.

[0076] Optionally, one of the second mating portion 12222 and the third mating portion 211 may be a protrusion or a hook, and the other may be a groove or a through hole. Of course, other mating structures are also possible, which are not specifically limited here.

[0077] In addition, one or more second matching portions 12222 and the third matching portions 211 can be provided respectively, and the number of the two can be equal, which is specifically set according to actual working conditions.

[0078] In some of the embodiments, the heat spread suppression device 10 further includes a base frame 13 , which can support the battery module 20 , and of course, can also support the motion mechanism 11 , the clamping and supporting mechanism 12 , and the like.

[0079] Among them, the base frame 13 includes a first support beam 131 and a second support beam 132 extending respectively along a first direction, and the first support beam 131 and the second support beam 132 are spaced apart along a second direction perpendicular to the first direction, so that an accommodating space for accommodating the battery module 20 is formed between the first support beam 131 and the second support beam 132, and the first support beam 131 and the second support beam 132 are respectively used to suspend the battery module 20.

[0080] Specifically, the battery module 20 is located between the first support beam 131 and the second support beam 132, and the two sides of the battery module 20 along the second direction can be overlapped on the first support beam 131 and the second support beam 132 respectively, so that the battery module 20 is suspended on the first support beam 131 and the second support beam 132, thereby facilitating the movement of the battery cell 21 along the first direction, and can also limit each battery cell 21 in the second direction.

[0081] Optionally, the first support beam 131 and the second support beam 132 may include a cross beam and a longitudinal beam connected to both ends of the cross beam, so that the two ends of the cross beam are supported by the longitudinal beams at both ends, so that the cross beam is suspended in the air, so that the battery module 20 is suspended by the cross beam.

[0082] In some embodiments, the base frame 13 further includes a first slide rail 133, a second slide rail 134, a plurality of first sliders 135 and a plurality of second sliders 136. The first slide rail 133 is arranged on the first support beam 131, and the plurality of first sliders 135 are respectively slidably connected to the first slide rail 133, and are respectively used to connect the plurality of battery cells 21 in the battery module 20 along one side of the second direction; similarly, the second slide rail 134 is arranged on the second support beam 132, and the plurality of second sliders 136 are respectively slidably connected to the second slide rail 134, and are respectively used to connect the plurality of battery cells 21 in the battery module 20 along the other side of the second direction. Based on this, through the sliding connection of the plurality of first sliders 135 with the first slide rail 133, and the sliding connection of the plurality of second sliders 136 with the second slide rail 134, each battery cell 21 can be ensured to move steadily and smoothly along the first direction, thereby preventing the battery cell 21 from getting stuck and causing the thermal runaway heat spread.

[0083] In some embodiments, the base frame 13 also includes a frame 137, and the first support beam 131 and the second support beam 132 are both arranged on the top of the frame 137. The first support beam 131 and the second support beam 132 can be fixed by the frame 137 to ensure the stability of the first support beam 131 and the second support beam 132.

[0084] In addition, at least part of the moving mechanism 11 is arranged inside the frame 137, and at least part of the clamping and supporting mechanism 12 is arranged inside the frame 137, so that the moving mechanism 11 and the clamping and supporting mechanism 12 are wrapped by the frame 137 to play a protective role, thereby ensuring the normal operation of the moving mechanism 11 and the supporting structure.

[0085] To prevent structural interference, the top wall of the frame 137 is provided with a first long hole 1371 and a second long hole 1372 extending respectively along the first direction, and the first long hole 1371 and the second long hole 1372 are spaced apart along the second direction, at least a portion of the first supporting component 121 is passed through the first long hole 1371, and is movable in the first long hole 1371 along the first direction and the second direction respectively, and at least a portion of the second supporting component 122 is passed through the second long hole 1372, and is movable in the second long hole 1372 along the first direction and the second direction respectively.

[0086] Based on the above arrangement, the first supporting component 121 and the second supporting component 122 will not be blocked by the top wall of the frame 137 and can support different battery cells 21; in addition, the supporting end of the first supporting component 121 can move along the second direction to clamp or release one of the battery cells 21, and the supporting end of the first supporting component 121 can move along the first direction to drive one of the battery cells 21 to move, so that the normal battery cell 21 is away from the battery cell 21 with thermal runaway, thereby reducing the risk of heat spread; the supporting end of the second supporting component 122 can move along the second direction to clamp or release another battery cell 21, and the supporting end of the second supporting component 122 can move along the first direction to drive another battery cell 21 to move, so that the normal battery cell 21 is away from the battery cell 21 with thermal runaway, thereby reducing the risk of heat spread.

[0087] Specifically, the first support arm is inserted into the first long hole 1371 and can move in the first long hole 1371 along the first direction and the second direction respectively; the second support arm is inserted into the second long hole 1372 and can move in the second long hole 1372 along the first direction and the second direction respectively.

[0088] In some embodiments of the present application, a battery pack is further provided, comprising the battery module 20 having the heat spread suppression device 10, wherein the battery module 20 comprises a plurality of battery cells 21 arranged along a first direction, the plurality of battery cells 21 are respectively arranged on the heat spread suppression device 10, and each battery cell 21 is movable along the first direction under the driving action of the heat spread suppression device 10. Based on this, under the driving action of the heat spread suppression device 10, the battery cells 21 on both sides adjacent to the battery cell 21 having thermal runaway can be respectively moved away from the battery cell 21 having thermal runaway, thereby suppressing heat spread, improving the safety of the battery module 20, and further improving the safety of the entire battery pack.

[0089] In addition, each battery cell 21 may be provided with a shell, such as a metal shell or a non-metal shell, etc., and the battery cell body is assembled inside the shell to protect the battery cell body. It should be noted that the shell of the battery cell 21 can be designed as a groove type, and of course, it can also be designed as other shapes, as long as the installation and strength requirements of the battery cell 21 are met.

[0090] In some embodiments, the battery module 20 also includes a plurality of deformable electrical connectors 22, and two adjacent battery cells 21 are connected via the electrical connectors 22. Thus, the two adjacent battery cells 21 can be connected in series or in parallel via the electrical connectors 22 to obtain a battery module 20 with a larger capacity or a larger voltage.

[0091] Furthermore, the length of the electrical connector 22 is greater than the distance between two adjacent battery cells 21 in the first direction. This arrangement can prevent the electrical connector 22 from interfering with the relative movement between two adjacent battery cells 21, ensuring that any two adjacent battery cells 21 can move freely without restriction.

[0092] Optionally, the electrical connector 22 may be made of aluminum bars, copper bars, or other components, which are not limited herein.

[0093] In some of the embodiments, the battery pack also includes multiple temperature detection devices and a battery management module (i.e., BMS, etc.), wherein the multiple temperature detection devices are respectively arranged on the multiple battery cells 21 and are respectively electrically connected to the battery management modules. Thus, the temperatures of the multiple battery cells 21 can be detected in real time through the multiple temperature detection devices and fed back to the battery management module to improve the safety of the battery.

[0094] It should be pointed out that the present embodiment does not limit the specific structural form or connection setting of the temperature detection component, battery management module, etc., which can refer to the existing technology and will not be described in detail here.

[0095] In addition, the motion mechanism 11 and the clamping and supporting mechanism 12 of the heat spread suppression device 10 are respectively electrically connected to the battery management module, so that in the event of thermal runaway, the battery management module controls the movement of the corresponding motion mechanism 11 and the clamping and supporting mechanism 12, thereby separating the normal battery cell 21 from the thermal runaway battery cell 21 to alleviate the heat spread.

[0096] In some embodiments of the present application, there is also provided an electric device, including the above-mentioned battery pack.

[0097] The battery pack of the embodiment of the present application can be used as a power source for an electric device, or as an energy storage unit for an electric device. The electric device can be, but is not limited to, a mobile device, an electric vehicle such as an electric car, an electric bicycle, a battery car, an electric truck, etc., or an electric train, an aircraft, an energy storage system, etc. Of course, it can also be other devices, which are not limited here.

[0098] In some embodiments of the present application, a safety protection method for preventing heat spread of a battery pack is also provided, which is applied to the above-mentioned battery pack, and the safety protection method includes:

[0099] Detecting the temperature of each battery cell 21;

[0100] When the temperature of any battery cell 21 exceeds the preset temperature, or the temperature rise rate exceeds the preset temperature rise rate, the heat spread suppression device 10 is controlled to start, so that the battery cells 21 on both sides adjacent to the battery cell 21 with thermal runaway are respectively away from the battery cell 21 with thermal runaway. Therefore, the heat spread caused by the battery cell 21 with thermal runaway transferring heat to the surrounding normal battery cells 21 can be alleviated, thereby suppressing the heat spread and improving the safety of the battery pack.

[0101] Specifically, the temperature of each battery cell 21 is monitored by a temperature detection element, and the temperature information of each battery cell 21 is sent to the battery management module in real time;

[0102] When the temperature rise rate of any battery cell 21 reaches 3°C / s, the battery management module determines that the corresponding battery cell 21 has thermal runaway, and instantly starts the heat spread suppression device 10, specifically, controlling the first translation part and the second translation part to move to the two sides of the battery cell 21 having thermal runaway, respectively, and respectively correspond to the two adjacent normal battery cells 21, and then controlling the two first clamping jaws 12121 of the first supporting component 121 to clamp one of the battery cells 21, and controlling the two second clamping jaws 12221 of the second supporting component 122 to clamp the other battery cell 21; subsequently, controlling the first translation part and the second translation part of the motion mechanism 11 to move in opposite directions, respectively, so that the two adjacent normal battery cells 21 are separated from the battery cell 21 having thermal runaway, thereby isolating and isolating the battery cell 21 having thermal runaway to block heat spread.

[0103] Parts not described in detail in the utility model specification are well known to those skilled in the art.

[0104] In the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0105] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0106] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples" or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A battery module, characterized in that: include: A plurality of battery cells, wherein the plurality of battery cells are stacked in an orderly manner along a first direction; as well as A heat spread suppression device, the heat spread suppression device comprising a motion mechanism and a clamping bearing mechanism, the motion mechanism comprising a driving member and a moving part, the output end of the driving member being connected to the moving part for driving the moving part to move along the first direction; The clamping bearing mechanism includes a driving part and a clamping bearing part, the output end of the driving part is connected to the clamping bearing part, and the clamping bearing part is connected to the moving part, the battery cell is connected to the clamping bearing part, the moving part is used to drive the clamping bearing part to move along the first direction, and the driving part is used to drive the clamping bearing part to move along the second direction, and the first direction is perpendicular to the second direction.

2. The battery module according to claim 1, characterized in that: The driving member includes a first driving member and a second driving member, and the moving part includes a first moving part and a second moving part; the output end of the first driving member is connected to the first moving part, and is used to drive the first moving part to move along the first direction; the output end of the second driving member is connected to the second moving part, and is used to drive the second moving part to move along the first direction; The driving part includes a first driving part and a second driving part, and the clamping bearing part includes a first clamping bearing part and a second clamping bearing part; the output end of the first driving part is connected to the first clamping bearing part, used to drive the first clamping bearing part to move along the second direction; the output end of the second driving part is connected to the second clamping bearing part, used to drive the second clamping bearing part to move along the second direction.

3. The battery module according to claim 2, characterized in that: The first moving part includes a first guide rod and a first guide member extending along the first direction, the first guide member is slidably connected to the first guide rod, and the first clamping bearing part is connected to the first guide member; The second moving portion includes a second guide rod and a second guide member extending along the first direction, the second guide member is slidably connected to the second guide rod, and the second clamping bearing portion is connected to the second guide member.

4. The battery module according to claim 1, characterized in that: The clamping bearing part includes a moving component and a clamping claw component. The output end of the driving part is connected to the moving component for driving the moving component to move along the second direction. The moving component is connected to the clamping claw component for driving the clamping claw component to move along the second direction.

5. The battery module according to claim 4, characterized in that: The battery core is provided with protruding structures on both sides along the second direction, and the clamping claw assembly is connected to the protruding structures.

6. The battery module according to any one of claims 1 to 5, characterized in that: The heat spread suppression device further comprises a base frame, and at least a part of the motion mechanism is disposed on the base frame; The base frame is provided with a hole structure extending along the first direction, and at least a portion of the clamping bearing portion is penetrated through the hole structure and is movable in the hole structure along the first direction and / or the second direction.

7. The battery module according to claim 6, characterized in that: The base frame includes a plurality of support beams, the plurality of support beams form a receiving space for receiving the plurality of battery cells, and the plurality of support beams are used to suspend the plurality of battery cells.

8. The battery module according to any one of claims 1 to 5, characterized in that: The battery module further includes a plurality of temperature detection components, and the plurality of temperature detection components are respectively disposed correspondingly to the plurality of battery cells.

9. A battery pack, characterized in that: The invention comprises a shell, and a plurality of battery modules as claimed in any one of claims 1 to 8 arranged in the shell.

10. An electrical device, characterized in that: Comprising the battery pack as claimed in claim 9.

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