CN219203399U

CN219203399U - Battery module

Info

Publication number: CN219203399U
Application number: CN202320109528.7U
Authority: CN
Inventors: 黄润成; 刘泽灿
Original assignee: Sichuan Injet Electric Co Ltd
Current assignee: Sichuan Injet Electric Co Ltd
Priority date: 2023-01-17
Filing date: 2023-01-17
Publication date: 2023-06-16
Anticipated expiration: 2033-01-17

Abstract

The utility model relates to a battery module, which comprises a shell, battery components and a fan, wherein a plurality of ventilation openings are respectively arranged on two sides of the shell, at least two groups of battery components are arranged in the shell, each group of battery components comprises a battery core bracket and a battery core, which are arranged at intervals, and the battery core bracket is used for supporting the battery core; the battery cell support is provided with a turbulent flow channel, and the turbulent flow channel is positioned between two adjacent battery cells; the ends of each cell support in two adjacent groups of battery components are mutually abutted to form a converging channel, each turbulent flow channel is respectively communicated with the converging channel and the ventilation opening, the turbulent flow channels and the converging channels form a heat dissipation channel, the fan is positioned at one end of the heat dissipation channel, and the fan dissipates heat to the cells under the action of the fan and the turbulent flow channels; this battery module can further improve the radiating effect, ensures that every electric core can both effectively dispel the heat, not only can reduce the temperature in the casing by a wide margin, guarantees the security of use, but also is favorable to increase of service life.

Description

Battery module

Technical Field

The utility model relates to the field of batteries, in particular to a battery module.

Background

The battery module (or called battery module) is usually connected by a plurality of electric cells in a proper manner to meet the requirements of different voltage levels and capacities. The conventional battery module is generally composed of a housing (or called a case), a battery management system, a heat dissipation system, and a plurality of battery modules, wherein each battery module is respectively disposed in the housing, and each battery module generally includes a plurality of electric cells, the heat dissipation system is used for dissipating heat of the electric cells, and the battery management system is used for managing temperature, electric quantity, and the like of the electric cells. The battery module is an important part of the energy storage system, if the temperature of the battery core is too high or a large temperature difference exists, the service life of the battery core is reduced, and therefore, the heat dissipation system in the battery module is directly related to the service life of the whole battery module.

The heat dissipation system in the existing battery module is generally composed of an air duct and a fan and the like which are communicated with the air duct, wherein the air duct generally comprises a channel formed between two adjacent electric cores in the battery assembly, when the battery module is used, wind flows along the air duct under the action of the fan and can flow through the channel between the two adjacent electric cores so as to bring heat generated in the working process of the electric cores, and therefore the purpose of dissipating heat of the electric cores is achieved. In order to further improve the heat dissipation effect of the battery cells, in some optimization schemes disclosed in the prior art, a plurality of horizontal partition plates are arranged in the channels between two adjacent battery cells, the horizontal partition plates are all arranged along the length direction of the channels, the channels between the two adjacent battery cells are separated by utilizing the horizontal partition plates, the contact area between the two adjacent battery cells and wind is increased through the horizontal partition plates, and the better heat dissipation effect is realized. However, in the heat dissipation system of the existing battery module, the flowing state of wind in the channel between two adjacent battery cells is usually a laminar state, even if the horizontal partition plates are arranged in the channel between two adjacent battery cells, the horizontal partition plates are of a plate-shaped structure and are arranged along the length direction of the channel, so that the horizontal partition plates can only separate the wind, cannot play a role of turbulence, the flowing state of the wind in the channel is basically unchanged, or the laminar state is maintained, the heat in the channel cannot be fully contacted with the wind, the flowing wind cannot more efficiently take away the heat generated by the battery cells, the residence time of the wind in the channel is relatively shorter, the heat exchange time is short, and the heat is more unfavorable to take away, therefore, the heat dissipation structure of the battery module needs to be further improved, so that the heat dissipation effect of the battery module is further improved, and the safety and the service life of the battery cells are ensured.

Disclosure of Invention

The utility model aims to solve the problem that the heat dissipation effect is poor due to insufficient contact and short heat exchange time in the heat exchange process in the prior battery module because the flowing state of heat dissipation air between two adjacent battery cells is laminar, and provides a heat dissipation structure with better heat dissipation effect, which can further improve the heat dissipation effect of the battery module, ensure that each battery cell can effectively dissipate heat, greatly reduce the temperature in a shell, and ensure the service life and the use safety of the battery cell.

The battery module comprises a shell, battery components and a fan, wherein a plurality of ventilation openings are respectively arranged on two sides of the shell, at least two groups of battery components are arranged in the shell, each group of battery components comprises a battery cell bracket and a battery cell, which are arranged at intervals, and the battery cell bracket is used for supporting the battery cell; the cell support is provided with a turbulence channel, and the turbulence channel is positioned between two adjacent cells; the ends of each cell support in two adjacent groups of battery packs are mutually abutted to form a converging channel, each turbulent flow channel is respectively communicated with the converging channel and the ventilation opening, the turbulent flow channels and the converging channels form a radiating channel, the fan is positioned at one end of the radiating channel, and the fan radiates heat to the cells under the action of the fan and the turbulent flow channels. In the scheme, the battery cell supports and the battery cells in each group of battery assemblies are arranged at intervals, and the battery cells are supported by the battery cell supports, so that in the same group of battery assemblies, two adjacent battery cells are separated by the battery cell supports, and heat dissipation of each battery cell is facilitated; the electric core support is provided with the turbulence channels, the turbulence channels are positioned between two adjacent electric cores, so that heat generated by the two adjacent electric cores can be directly or indirectly transferred into the turbulence channels through the electric core support, and the purpose of radiating the electric cores is achieved by taking away the heat through wind passing through the turbulence channels; through the mutual butt of the end of each electric core support in two sets of battery packs that will be adjacent, can form the passageway that converges between two sets of battery packs, and each vortex passageway is linked together with converging passageway and vent respectively, make vent, vortex passageway and converging passageway can constitute the heat dissipation passageway, when the operation, can dispel the heat to the electric core under the combined action of fan and vortex passageway, the vortex passageway can play the effect of vortex to wind, make the wind in the vortex passageway more disturbed, the flow state of wind becomes the torrent by the laminar flow, and form the torrent wind, the torrent wind can be more abundant with electric core and electric core support contact, so that more efficient takes away the heat that the electric core produced, thereby reach the purpose of cooling battery module, reduction electric core temperature.

Preferably, the electric core support comprises two branch frames, and the two branch frames are mutually abutted to form the turbulent flow channel. In this scheme, form the vortex passageway through the mode of mutual butt, both be favorable to simplifying the structure of electric core support, be convenient for assemble each group battery module again.

In order to solve the problem that the turbulent flow channel is formed by the abutting connection of two adjacent sub-brackets, further, the side surfaces of the sub-brackets are provided with an upper contact protruding part and a lower contact protruding part, and in the battery cell bracket, the upper contact protruding parts of the two sub-brackets are mutually abutted, the lower contact protruding parts are mutually abutted, and the turbulent flow channel is jointly enclosed. In this scheme, through side structure upper portion contact protruding portion and lower part contact protruding portion at the branching frame for when the assembly, the upper portion contact protruding portion of two branching frames can be in the same place each other in the butt, and the lower part contact protruding portion of two branching frames can be in the same place each other in the butt, thereby makes two branching frames enclose into the vortex passageway jointly, not only simple structure, convenient assembling are favorable to the heat of turbulent flow wind take away the branching frame moreover, reach the purpose for the even heat dissipation of electric core.

The second aspect of the present utility model is to solve the problem of further improving the heat dissipation effect in the turbulent flow channel, and further, the turbulent flow channel is provided with a turbulent flow component, and the turbulent flow component is used for turbulent flow. By arranging the turbulence component in the turbulence channel, the heat dissipation effect can be improved, and the heat dissipation is facilitated; more importantly, the turbulence component is used for playing a role in turbulence on wind in the turbulence channel, so that the wind in the turbulence channel is more turbulent, the flowing state of the wind is changed into turbulent flow from laminar flow, turbulent wind is formed, the turbulent wind can be more fully contacted with the battery cell support so as to more efficiently take away heat generated by the battery cell, and the wind in the turbulence channel can be properly decelerated due to the blocking effect of the turbulence component on the wind so as to increase the stay time of the turbulent wind in the turbulence channel, thereby effectively improving the heat exchange time and leading the turbulent wind to take away more heat; compared with the prior art, the design can further improve the heat dissipation effect of the battery module, ensures that each battery cell can effectively dissipate heat, can greatly reduce the temperature in the shell, ensures the use safety, avoids accidents such as fire explosion and the like caused by thermal runaway of the battery cell due to overhigh temperature in the shell, and is beneficial to prolonging the service life of the battery module.

Preferably, the spoiler is disposed at a side of the sub-mount and between the upper contact protrusion and the lower contact protrusion. In this scheme, the spoiler can directly construct in the side of branch frame for spoiler and branch frame structure as an organic whole, avoid installing spoiler alone, the assembly of being more convenient for.

In order to solve the problem of further improving the heat dissipation effect, preferably, in the cell support, when the two branch frames are abutted together, the turbulence members on the two branch frames are abutted against or staggered with each other, and divide the turbulence channel into at least two sub-channels along the height direction. In the scheme, the turbulence parts on the two sub-brackets can be in one-to-one correspondence, so that when in assembly, the turbulence parts on the two sub-brackets can be mutually abutted together, and two sub-channels can be separated in the turbulence channel; in addition, the turbulence parts on the two sub-brackets can be arranged in a staggered manner, so that the turbulence parts on the two sub-brackets can be staggered with each other during assembly, and two sub-channels can be separated in the turbulence channel; in the heat dissipation process, turbulent wind can flow along each sub-channel respectively, and because the flow area of each sub-channel is smaller, the turbulent wind is beneficial to fully contacting with the side wall of the sub-channel, so that the heat generated by the battery cell can be taken away more efficiently, and the heat dissipation effect is further improved.

In order to solve the problem of disturbing the air flow in the turbulent flow channel, preferably, the turbulent flow component comprises a partition plate and a plurality of turbulent flow parts arranged on the partition plate, the partition plate is used for separating the air flow, the turbulent flow parts are bulges upwards along the height direction of the turbulent flow channel or bulges downwards along the height direction of the turbulent flow channel, and the turbulent flow parts are used for changing the direction of the air flow. In the scheme, the division plates are constructed in the turbulence component so as to divide the air flow entering the turbulence channel by the division plates, thereby being beneficial to realizing more uniform heat dissipation; by constructing the turbulence part in the turbulence part and constructing the turbulence part as a bulge upwards along the height direction of the turbulence channel or a bulge downwards along the height direction of the turbulence channel, on one hand, the turbulence part can play a role in blocking the air flow, so that the air flow is decelerated, the residence time of the air flow is increased, and the heat exchange is more fully performed; on the other hand, the flow direction of the air flow can be changed by the turbulence part, so that the air flow is more turbulent, turbulence is formed, and a better heat dissipation effect is realized.

Preferably, a part of the partition plate protrudes upward to form the spoiler, or a part of the partition plate protrudes downward to form the spoiler. In the scheme, the partition plate and the turbulence part can be integrally formed components, so that the structure is simpler, and efficient heat transfer and heat dissipation are facilitated.

Preferably, at least two turbulence members are disposed along the height direction of the turbulence passage, and the structures of the turbulence members are identical. By adopting the design, in the formed sub-channel between two adjacent turbulence components, the flow area of the sub-channel is changed from one end of the sub-channel to the other end of the sub-channel, so that the flow speed of the air flow is changed, more sufficient and even heat exchange is facilitated, and better heat dissipation effect is facilitated.

In order to solve the problem of forming the converging channel, the second aspect of the present utility model further provides that one end of the battery cell support is configured with a groove, and after two adjacent groups of battery modules are abutted against each other, the grooves between the two adjacent groups of battery modules jointly form the converging channel. In the scheme, the grooves are respectively formed at one end of each cell support, so that after the cell supports in the two adjacent groups of cell assemblies are mutually abutted, the grooves between the two adjacent groups of cell assemblies can just form the confluence channel together.

Preferably, the confluence channel is a circular channel or a square channel or a polygonal channel. Is convenient for heat dissipation and molding.

In order to solve the problem of more uniform temperature of the battery cell, the utility model further provides an air channel isolation plate at one end of the battery cell bracket, and the air channel isolation plates are matched and abutted with the corresponding shells, so that independent air inlet channels communicated with the turbulence channels and the ventilation openings are formed between two adjacent air channel isolation plates. In this battery module, be equipped with different shapes or different quantity vent on the both sides curb plate of casing, through the outer end construction wind channel division board at the electric core support, two adjacent wind channel division boards are located the both sides of vortex passageway respectively, when the assembly, two adjacent wind channel division boards butt respectively in corresponding casing for can form the independent air inlet passageway that is linked together with the vortex passageway between two wind channel division boards, and this independent air inlet passageway is linked together with the vent that corresponds on the casing, so that realize the independent air inlet or the independent air-out of each vortex passageway, two adjacent vortex passageways do not interfere each other, combine different shapes or quantity vent to make the amount of wind that gets into each vortex passageway balanced, thereby make the radiating effect of each vortex passageway equivalent, the temperature of each electric core is more balanced, can effectively avoid appearing the great, life reduction scheduling problem of electric core difference in temperature.

Compared with the prior art, the battery module provided by the utility model can further improve the heat dissipation effect, ensure that each battery cell can uniformly and effectively dissipate heat, greatly reduce the temperature in the shell, ensure the use safety and be beneficial to prolonging the service life.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is an exploded view of a battery module according to an embodiment of the present utility model.

Fig. 2 is a schematic partial view of two adjacent battery modules in a battery module according to an embodiment of the utility model.

Fig. 3 is a partial top view (without a top plate) of a battery module according to an embodiment of the present utility model.

Fig. 4 is a front view of two adjacent battery modules in a battery module according to an embodiment of the present utility model.

Fig. 5 is a side view of the sub-mount in the battery module shown in fig. 4.

Fig. 6 is a front view of two adjacent battery modules in a battery module according to an embodiment of the present utility model.

Fig. 7 is a front view of a branch frame in a battery module according to an embodiment of the present utility model.

Fig. 8 is a front view of another branch frame in a battery module according to an embodiment of the present utility model.

Fig. 9 is a front view of a battery module according to another embodiment of the present utility model.

Fig. 10 is a schematic three-dimensional structure of a branch frame in a battery module according to an embodiment of the present utility model.

Fig. 11 is a schematic diagram of a battery module according to an embodiment of the utility model, in which an air duct spacer is attached to a side plate.

Fig. 12 is a cross-sectional view of a battery module according to an embodiment of the present utility model (the battery module is shown in a front view).

Description of the drawings

Casing 1, bottom plate 11, side plate 12, vent 121, top plate 13, front plate 14, vent 141, and rear seal plate 15

Blower fan 2

Battery pack 3

Cell 41, cell holder 42, and branch holder 43

Upper boss 501, lower boss 502, upper contact boss 503, lower contact boss 504, mounting groove 505, groove 506, spoiler channel 507, spoiler 508, partition 5081, spoiler 5082, sub-channel 509, duct spacer 510

Confluence channel 601

Air duct partition 7 and partition air hole 71

A screw 8 and a nut 81 are installed.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.

Example 1

In this embodiment, there is provided a battery module including a case 1, at least two battery modules 3 disposed in the case 1, and a blower fan 2 for accelerating heat dissipation,

as shown in fig. 1, the housing 1 may include, for example, a bottom plate 11, side plates 12 disposed on both sides of the bottom plate 11, a top plate 13 disposed above the bottom plate 11 and corresponding to the bottom plate 11, a front panel 14, and a rear sealing plate 15, where the bottom plate 11, the two side plates 12, the top plate 13, the front panel 14, and the rear sealing plate 15 together enclose a square structure, and in implementation, the bottom plate 11 and the two side plates 12 may be three plates independent of each other or may be an integral molding member.

The two sides of the shell 1 are respectively provided with a plurality of ventilation openings 121, and the ventilation openings 121 are used for air intake or air outlet so as to dissipate heat. In practice, the ventilation openings 121 may be formed on the side plates 12 of the housing 1, as shown in fig. 1, and the two side plates 12 on both sides of the housing 1 are respectively formed with a plurality of ventilation openings 121 so as to allow air to enter or flow from both sides of the housing 1; in implementation, the number of the ventilation openings 121 may be determined according to practical needs, and the shape of the ventilation openings 121 may also have various embodiments, for example, the ventilation openings 121 may be preferably configured as round holes, square holes, strip holes, etc., so as to facilitate processing and shaping, and of course, may also be configured as irregular holes such as elliptical holes, triangular holes, etc. To enhance the heat dissipation effect, the uniform heat dissipation of the battery cell 41 is realized, and the larger the total ventilation area of the ventilation opening 121 corresponding to the turbulence channel 507 which is further away from the fan 2 is, the smaller the total ventilation area is.

In this embodiment, at least two sets of battery assemblies 3 are disposed in the housing 1, each set of battery assemblies 3 includes a battery core support 42 and a battery core 41 that are disposed at intervals, as shown in fig. 1-3, that is, in the same set of battery assemblies 3, two adjacent battery cores 41 are separated by the battery core support 42, so that a certain space is between the two adjacent battery cores 41, so as to dissipate heat of each battery core 41, in this embodiment, the battery core support 42 is mainly used for supporting and restraining the battery core 41, and a heat dissipation channel is formed between the two battery cores 41, so that the battery cores 41 can be firmly and stably disposed in the housing 1, and uniformly dissipate heat. In practice, each group of battery packs 3 is respectively arranged between two side plates 12 of the case 1, and is respectively arranged along the length direction of the side plates 12 so as to dissipate heat; the number of the battery assemblies 3 may be determined according to actual needs, for example, in this embodiment, two sets of battery assemblies 3 are adjacently disposed in the housing 1, and one end of each of the cell holders 42 in the two adjacent sets of battery assemblies 3 is abutted with each other, and a bus duct 601 for heat dissipation is formed between the two adjacent sets of battery assemblies 3 by being abutted with each other, as shown in fig. 1-3, so as to dissipate heat by using the bus duct 601; meanwhile, the other ends of the cell holders 42 in the two adjacent groups of battery packs 3 respectively correspond to the side plates 12 on the two sides of the housing 1 so as to respectively cooperate with the ventilation openings 121 on the side plates 12 to dissipate heat. For another example, three groups of battery assemblies 3 are adjacently arranged in the shell 1, and the ends of the battery cell brackets 42 in the two adjacent groups of battery assemblies 3 are mutually abutted to form a confluence channel 601; meanwhile, in the outermost battery assembly 3, the other ends of the respective cell holders 42 correspond to the side plates 12 on both sides of the case 1, respectively, so as to be respectively matched with the ventilation openings 121 on the side plates 12 for heat dissipation. Of course, the number of the battery packs 3 provided in the case 1 may be four, five, six, etc., and will not be illustrated here.

In order that the cell holders 42 and the cells 41 in the respective battery packs 3 may be stably spaced together, in this example, the cell holders 42 are configured with at least two mounting portions, each of which penetrates through both sides of the cell holders 42, respectively. During assembly, the battery cell supports 42 and the battery cells 41 in each group of battery assemblies 3 are arranged at intervals, each installation part in each battery cell support 42 corresponds to each other, then the installation screw rod 8 can be penetrated into the installation part, finally nuts 81 are respectively connected at two ends of the installation screw rod 8 in a threaded manner, the battery cell supports 42 and the battery cells 41 which are arranged at intervals between the two nuts 81 are tightened by the two nuts 81, so that the battery cells 41 can be clamped between the two adjacent battery cell supports 42, and the purpose of fixing the battery cells 41 is achieved as shown in fig. 2, 3 and 6. In practice, the mounting portion may be a through hole formed in the cell holder 42, or may be a mounting groove 505 formed in the cell holder 42. For example, as shown in fig. 3 to 5, in one embodiment, the upper portion and the lower portion of two ends of the cell support 42 are respectively provided with a mounting groove 505, each mounting groove 505 respectively penetrates through two sides of the cell support 42, that is, each cell support 42 is respectively configured with four mounting grooves 505, when assembled, each mounting groove 505 can be respectively sleeved on one mounting screw rod 8, so that each cell support 42 can be limited between the four mounting screw rods 8, and each cell 41 is respectively arranged between two adjacent cell supports 42, so that the cell supports 42 and the cells 41 are arranged at intervals, and finally, the fixing of each cell 41 can be realized by tightening the cell supports 42 and the cells 41 which are arranged at intervals by using nuts 81.

In order to facilitate forming the bus duct 601, in this embodiment, at least one end of the cell holder 42 is configured with a groove 506, as shown in fig. 4 and 7, so that after two adjacent sets of battery assemblies 3 abut against each other, the groove 506 between the two adjacent sets of battery assemblies 3 can jointly form the bus duct 601. For example, when two sets of battery assemblies 3 are disposed in the housing 1 of the battery module, the inner ends of the cell holders 42 in the two sets of battery assemblies 3 are respectively configured with grooves 506, as shown in fig. 4 and 7, so that after the two sets of battery assemblies 3 abut against each other, the grooves 506 between the two sets of battery assemblies 3 can jointly form the converging channel 601. For another example, when three sets of battery modules 3 are disposed in the housing 1 of the battery module, the two ends of each cell holder 42 in the middle set of battery modules 3 are respectively configured with a groove 506, and the inner ends of each cell holder 42 in the other two sets of battery modules 3 are respectively configured with a groove 506, and after the two sets of battery modules 3 are respectively abutted against the middle battery module 3, two mutually parallel converging channels 601 can be formed.

In a more sophisticated solution, in order to facilitate the mutual abutment of the cell support 42 and the cell support 42, in implementation, the upper portion and the lower portion of one end of the cell support 42 are respectively configured with an upper protrusion 501 and a lower protrusion 502, the groove 506 may be formed between the upper protrusion 501 and the lower protrusion 502, as shown in fig. 4 and 5, and the mounting portion may be configured on the upper protrusion 501 and the lower protrusion 502. At the time of assembly, the upper convex portion 501 of each cell holder 42 in the adjacent two sets of battery modules 3 and the opposite upper convex portion 501 are in contact with each other, and the lower convex portion 502 and the opposite lower convex portion 502 are in contact with each other, so that the confluence passage 601 can be formed between the upper convex portion 501 and the lower convex portion 502.

Since the shape of the confluence channel 601 is related to the shape of the groove 506, in practice, the shape of the confluence channel 601 may be controlled by controlling the shape of the groove 506, for example, the groove 506 may be constructed in a semicircular structure such that the confluence channel 601 may form a circular channel; the groove 506 may be constructed in a semi-elliptical structure such that the confluence passage 601 may form an elliptical passage; the groove 506 may be configured in a rectangular structure, as shown in fig. 4 and 7, so that the confluence channel 601 may form a square channel; the groove 506 may be configured in a polygonal structure such that the confluence passage 601 may form a polygonal passage.

In order to form mutually communicated heat dissipation channels in the housing 1 and achieve a better heat dissipation effect, in this embodiment, each of the cell supports 42 is respectively provided with a turbulence channel 507, the turbulence channels 507 are located between two adjacent cells 41, one end of each of the turbulence channels 507 may be communicated with a corresponding end of the corresponding flow channel 601, and the other end of each of the turbulence channels 507 may be communicated with the corresponding end of the corresponding flow channel 601 or the corresponding flow channel 121, as shown in fig. 3 and 4, that is, each of the turbulence channels 507 in the battery module may be respectively communicated with the flow channel 601 and/or the flow channel 121, so that the flow channels 121 on two sides of the housing 1 may be communicated with the middle flow channel 601 through the turbulence channels 507, and also the adjacent two flow channels 601 may be laterally communicated through the flow channels 507, so that the

flow channels

121, 507 and 601 may form the heat dissipation channels. In the heat dissipation process, heat dissipation wind (or referred to as air flow) flows along the heat dissipation channel, and heat generated by two adjacent battery cells 41 can be directly or indirectly transferred into the turbulence channel 507 via the battery cell bracket 42, and can be carried away by the heat dissipation wind passing through the turbulence channel 507, and finally discharged via the heat dissipation channel, so that the purpose of uniformly and efficiently dissipating the heat of the battery cells 41 is achieved.

In this embodiment, the fan 2 is mainly used to accelerate the flow of the heat dissipation air in the housing 1 so as to play a role in accelerating the heat dissipation, for example, in one embodiment, the fan 2 is disposed in the housing 1 and is located near the front panel 14 of the housing 1, the front panel 14 of the housing 1 is configured with a vent hole 141 adapted to the fan 2, one end of the fan 2 is communicated with the vent hole 141, and the other end of the fan 2 is communicated with the converging channel 601, so that the fan 2 can act on the heat dissipation channel formed by the vent 121, the turbulent channel 507 and the converging channel 601, so as to accelerate the flow of the heat dissipation air in the heat dissipation channel, thereby achieving the purpose of accelerating the heat dissipation. In this embodiment, as shown in fig. 1 and fig. 3, for example, in this embodiment, the fan 2 may be disposed at a position opposite to the converging channel 601, two ends of the fan 2 are respectively communicated with the ventilating hole 141 and the converging channel 601, two sides of the converging channel 601 are respectively communicated with the ventilating holes 121 on two sides of the housing 1 through the respective turbulent channels 507, in one operation mode, external wind may enter the housing 1 through the ventilating holes 121 under the action of the fan 2, enter the converging channel 601 through the turbulent channels 507, and finally exit the housing 1 from the ventilating holes 141 after passing through the fan 2, so that efficient heat dissipation of the battery core 41 can be achieved under the combined action of the fan 2 and the turbulent channels 507 in the battery module.

In order to further improve the heat dissipation effect on the battery core 41, in this embodiment, a turbulence member 508 for disturbing the heat dissipation air is further disposed in the turbulence channel 507, as shown in fig. 4 and 6, the arrangement of the turbulence member 508 can increase the heat dissipation area in the turbulence channel 507, thereby being more beneficial to heat dissipation; on the other hand, the turbulence component 508 can play a role in turbulence on the wind in the turbulence channel 507, so that the wind in the turbulence channel 507 is more turbulent, the flowing state of the wind changes from laminar flow to turbulent flow, and turbulent flow wind is formed, and the turbulent flow wind can be more fully contacted with the battery cell bracket 42, so that heat generated by the battery cell 41 can be more efficiently taken away; in addition, the turbulence component 508 can also play a role in blocking wind, so that the wind in the turbulence channel 507 can be properly decelerated, so that the residence time of the turbulent wind in the turbulence channel 507 is increased, the heat exchange time is effectively improved, the heat exchange process is more sufficient, more heat can be taken away by the turbulent wind, the heat dissipation effect of the battery module can be further improved, and each battery cell 41 can be ensured to effectively dissipate heat.

In order to form the turbulence channel 507, for example, in one embodiment, the cell support 42 between two adjacent cells 41 may be an integrally formed member, where the turbulence channel 507 may be a channel machined on the cell support 42, and two ends of the turbulence channel 507 respectively penetrate two ends of the cell support 42, that is, the turbulence component 508 may be directly configured on the cell support 42; in addition, the spoiler 508 may be further fixed in the spoiler channel 507 by bonding, welding, riveting, bolting, etc.; and the battery cell 41 is restrained in the middle by two adjacent battery cell brackets 42.

As another example, in the preferred embodiment provided in this embodiment, the cell support 42 may include two branch frames 43, where the two branch frames 43 abut against each other during assembly, and the turbulence channel 507 is formed therebetween, as shown in fig. 2-6, so that the structure of the cell support 42 is simplified, and the forming and assembly of the cell support 42 are facilitated. For example, as shown in fig. 4 to 6, the side surface of the sub-frame 43 is configured with an upper contact protrusion 503 and a lower contact protrusion 504, a space is provided between the upper contact protrusion 503 and the lower contact protrusion 504, and in practice, the upper contact protrusion 503 may be preferentially disposed at an upper portion of the side surface of the sub-frame 43, and the lower contact protrusion 504 may be preferentially disposed at a lower portion of the side surface of the sub-frame 43, as shown in fig. 4 to 6. When the battery cell bracket 42 is assembled, the upper contact protruding parts 503 of the two sub-brackets 43 can be mutually abutted together, and the lower contact protruding parts 504 of the two sub-brackets 43 can be mutually abutted together; meanwhile, in one embodiment, a side panel may be further disposed between the upper contact protrusion 503 and the lower contact protrusion 504 on the side surface of the sub-frame 43, so that after the two sub-frames 43 are abutted against each other, the two opposite side panels, the upper contact protrusion 503 and the lower contact protrusion 504 may jointly enclose the turbulence channel 507. In the preferred embodiment provided in this embodiment, a hollow structure may be provided between the upper contact protruding portion 503 and the lower contact protruding portion 504 on the side surface of the branch frame 43, as shown in fig. 4, 5 and 10, so that after the battery assembly 3 is assembled, the two branch frames 43 and the two adjacent electric cores 41 together enclose the turbulence channel 507, that is, the upper contact protruding portion 503 and the lower contact protruding portion 504 in the two branch frames 43 and the electric core 41 (specifically, the side wall of the electric core 41) on the other side of the branch frame 43 may enclose the turbulence channel 507 together; that is, the upper contact protruding portion 503 and the lower contact protruding portion 504 are only used to seal the upper portion and the lower portion of the turbulence channel 507, and the two sides of the turbulence channel 507 are sealed by using the side wall of the electric core 41, which not only has the characteristics of simple structure and convenient assembly, but also is more convenient for taking away the heat on the surface of the electric core 41 by using the airflow in the turbulence channel 507, and is beneficial to realizing better heat dissipation effect. In this embodiment, although the spoiler 508 may be fixed to the side of the sub-bracket 43 by a post-installation method, in a preferred embodiment, the spoiler 508 may be directly formed on the side of the sub-bracket 43 and located between the upper contact protrusion 503 and the lower contact protrusion 504, as shown in fig. 4 to 6, i.e., the spoiler 508 and the sub-bracket 43 may be integrally formed, thereby avoiding separate installation of the spoiler 508 and facilitating rapid assembly. More preferably, in this embodiment, the sub-frame 43 is respectively configured with at least two mounting portions, for example, as shown in fig. 4 to 6, the upper and lower parts of both ends of the sub-frame 43 are respectively configured with the upper and lower protrusions 501 and 502, and the upper and lower protrusions 501 and 502 are respectively configured with the mounting portions, the mounting portions are mounting grooves 505, and the mounting grooves 505 penetrate through both sides of the sub-frame 43 so as to restrict and fix the sub-frame 43 by the cooperation of the mounting screw 8 and the mounting grooves 505; meanwhile, the groove 506 is formed between the upper boss 501 and the lower boss 502, as shown in fig. 4 to 7, so that the confluence passage 601 is formed by the abutment of the upper boss 501 and the upper boss 501, the abutment of the lower boss 502 and the lower boss 502; the side of the sub-bracket 43 facing away from the turbulence member 508 is configured to adapt to the electric core 41, so that the constraint and fixation of the electric core 41 are realized through the cooperation of the two sub-brackets 43, that is, the two sub-brackets 43 on two sides of the electric core 41 cooperate with each other and support and fix the electric core 41, and the two sub-portions between the two electric cores 41 cooperate with each other and form a turbulence channel 507, so that the heat dissipation of the electric core 41 is realized through the turbulence channel 507.

In one embodiment, when the two sub-frames 43 are abutted against each other, the spoiler 508 on the two sub-frames 43 may be abutted against each other as shown in fig. 6, so that the spoiler channel 507 may be divided into at least two sub-channels 509 in the height direction; in this embodiment, the structures of the two sub-brackets 43 may be identical, and may be configured as symmetrical structures, so that the number, shape, and position of the spoiler 508 on the two sub-brackets 43 are identical, respectively, so that the spoiler 508 on the two sub-brackets 43 may correspond one to one, so that the spoiler 508 on the two sub-brackets 43 may abut against each other during assembly, and thus the sub-channels 509 may be partitioned in the spoiler channel 507. In the heat dissipation process, turbulent wind can flow along each sub-channel 509 respectively, and because the flow area of each sub-channel 509 is smaller, the turbulent wind is beneficial to fully contacting with the side wall of the surrounding sub-channel 509, so that heat generated by the electric core 41 can be taken away more efficiently, and the heat dissipation effect is beneficial to further improvement.

It will be appreciated that in another embodiment, when the two sub-frames 43 abut against each other, the spoiler 508 on the two sub-frames 43 may be staggered with respect to each other, i.e. the spoiler 508 on the side of one sub-frame 43 may abut against the side wall of the opposite sub-frame 43, while the spoiler 508 on the side of the opposite sub-frame 43 may abut against the side wall of the sub-frame 43. In this embodiment, the two sub-frames 43 are substantially identical in structure, but the positions of the turbulence members 508 on the two sub-frames 43 must be different to achieve the effect of mutual displacement during assembly, and this embodiment can also achieve the same technical effect by using the turbulence members 508 to divide the turbulence channel 507 into at least two sub-channels 509 in the height direction.

In order to achieve the turbulence effect, the turbulence member 508 may have various embodiments, for example, the turbulence member 508 may have a wave-shaped structure, as shown in fig. 7, two ends of the turbulence member 508 may extend to two ends of the turbulence channel 507, and peaks in the wave-shaped structure may block the air flow and guide the air flow to flow along one side thereof, so as to forcibly change the direction of the air flow, and through the cooperation of multiple peaks, the direction of the air flow may be continuously and greatly changed, so that the turbulence degree of the air flow in the turbulence channel 507 may be significantly increased by changing the direction of the air flow, so that the laminar flow becomes turbulent flow, and the air flow may be caused to flow in a meandering manner, so as to achieve a better heat dissipation effect.

For another example, the turbulence member 508 may also adopt a zigzag structure, as shown in fig. 4, similarly, two ends of the turbulence member 508 may respectively extend to two ends of the turbulence channel 507, and tips of the zigzag structure may block the airflow and guide the airflow to flow along one side of the zigzag structure, and through cooperation of multiple tips, the airflow direction may be continuously and greatly changed, so that the turbulence degree of the airflow in the turbulence channel 507 may be significantly increased, the laminar flow becomes turbulent, and the airflow may flow in a zigzag manner, so as to achieve the purpose of improving the heat dissipation effect.

Example 2

In order to solve the problem of disturbing the airflow in the turbulent flow channel 507 and further improving the heat dissipation effect, the main difference between the present embodiment 2 and the above embodiment is that, in the battery module provided in this embodiment, the turbulent flow component 508 includes a partition plate 5081 and a plurality of turbulent flow portions 5082 disposed on the partition plate 5081, as shown in fig. 8 and 9, the partition plate 5081 is used to partition the airflow entering the turbulent flow channel 507, so as to facilitate more uniform heat dissipation; the turbulence part 5082 is a protrusion (as shown in fig. 8) upward along the height direction of the turbulence channel 507 or a protrusion (as shown in fig. 9) downward along the height direction of the turbulence channel 507, on one hand, the turbulence part 5082 can block the airflow, so that the airflow is decelerated, the residence time of the airflow is increased, and the heat exchange is more fully performed; on the other hand, the turbulence part 5082 can change the flow direction of the air flow, so that the air flow is more turbulent and is guided to flow in a meandering manner, thereby being beneficial to forming turbulence and realizing better heat dissipation effect.

In a preferred embodiment, each spoiler 5082 in the spoiler 508 is located above the separator 5081 or below the separator 5081, i.e., the spoiler 5082 is provided only on a single side (either upper or lower) of the separator 5081, in order to simplify the structure of the spoiler 508.

In practice, the separation plate 5081 may be a flat plate, and the turbulence part 5082 may be a protrusion fixed to a surface of the separation plate 5081 by welding, bonding, riveting, bolting, or the like, so that the air flow is blocked and disturbed by the protrusion, and thus the air flow forms turbulence. In the preferred embodiment, the separation plate 5081 and the spoiler 5082 may be integrally formed, and at this time, a partial region of the separation plate 5081 may be upwardly protruded to form the spoiler 5082 as shown in fig. 8, or a partial region of the separation plate 5081 may be downwardly protruded to form the spoiler 5082 as shown in fig. 9, thereby not only having a simpler structure, being more convenient for forming and assembling, but also being more advantageous for efficient heat transfer and heat dissipation.

In practice, the number of the turbulence members 508 disposed in the turbulence channel 507 may be one, two, three or more according to practical requirements. For example, in the preferred embodiment, as shown in fig. 8 and 9, at least two spoiler members 508 are disposed along the height direction of the spoiler channel 507, and the structures of the spoiler members 508 are the same (including the same number of spoiler portions 5082 and the same positions of the spoiler portions 5082). For example, as shown in fig. 8-10, at least five turbulence members 508 are disposed along the height direction of the turbulence channel 507 so as to separate six sub-channels 509 along the height direction, each turbulence member 508 includes two turbulence portions 5082 disposed at intervals, the turbulence portions 5082 are raised upward, as shown in fig. 8 and 10, in the same turbulence member 508, the shape of each protrusion is the same, and each turbulence portion 5082 at the same position in each turbulence member 508 is aligned in the vertical direction, as shown in fig. 8 and 10, in the sub-channels 509 formed between two adjacent turbulence members 508, the flow area of the sub-channels 509 varies from one end to the other end of the sub-channels 509, for example, as shown in fig. 8, the flow area at a-a is greater than the flow area at b-b, the flow area at c-c is greater than the flow area at b-b, and also greater than the flow area at d-d is less than the flow area at e-e. According to the relation between the flow rate and the pressure, the pressure is inversely proportional to the flow rate, so that the air flow is accelerated and decelerated alternately in the process of passing through the sub-channels 509, the air flow is more disturbed, the air flow is fully contacted with the cell support 42, the heat exchange time can be effectively increased, and the heat exchange is more fully and uniformly performed, so that a better heat dissipation effect is realized.

Example 3

In order to solve the problem that the temperature of the battery cell 41 is more uniform, the main difference between the battery module provided in this embodiment 3 and the above embodiment is that, in the battery module 3 at the outermost side, one end of the battery cell support 42 is configured with the air duct isolation plate 510, as an example, when the battery cell support 42 is an integrally formed component, one end of the battery cell support 42 may be configured with two air duct isolation plates 510, and the two air duct isolation plates 510 are respectively located at two sides of the turbulence channel 507; as another example, when the cell holder 42 is formed by splicing two branch frames, as shown in fig. 4, 5, 6, 8 and 10, the air duct isolation plate 510 may be vertically disposed at one or both ends of the branch frame 43, and in the case that a groove 506 is formed at one end of the branch frame 43, the cell holder 42 may be disposed in the groove 506 so as to separate the groove 506 in the vertical direction, as shown in fig. 8 and 10.

When assembled, the air duct isolation plates 510 can be matched with the corresponding shell 1, so that independent air inlet channels communicated with the turbulence channels 507 and the ventilation openings 121 can be formed between the two air duct isolation plates 510. For example, in one embodiment, the air duct isolation plates 510 may directly abut against the corresponding housing 1, so that an independent air inlet channel communicating with the turbulence channels 507 and the ventilation openings 121 may be formed between two adjacent air duct isolation plates 510, so as to realize independent air inlet or independent air outlet of each turbulence channel 507, the two adjacent turbulence channels 507 do not interfere with each other, so that the air quantity entering each turbulence channel 507 is balanced, the heat dissipation effect of each turbulence channel 507 is equivalent, the temperature of each electric core 41 is more balanced, and the problems of large temperature difference of the electric core 41, reduced service life and the like can be effectively avoided.

For another example, in another embodiment, an air duct partition 7 may be further disposed between the air duct partition 510 and the corresponding housing 1, as shown in fig. 1, the air duct partition 7 is configured with a plurality of air duct partition holes 71, and the air duct partition 7 may be attached to the side plate 12 of the housing 1, and each air duct partition hole 71 corresponds to at least one ventilation opening 121 on the housing 1, as shown in fig. 11, and meanwhile, the air duct partition 510 may be abutted to the corresponding air duct partition 7, and each air duct partition 71 is located between two air duct partitions 510 of the electric core support 42, as shown in fig. 12, so that an isolation structure may be jointly formed between the air duct partition 7 and the air duct partition 510 on the electric core support 42, so that independent air inlet channels communicating with the turbulence channels 507 and the ventilation openings 121 may be formed, so as to implement independent air inlet or independent air outlet of each turbulence channel 507, and adjacent turbulence channels 507 may not interfere with each other, and may also play a role in balancing the air quantity of each turbulence channel 507, so that the heat dissipation effect of each turbulence channel is equivalent.

In practice, the air duct partition 7 may preferably have a plate-like structure, and as shown in fig. 1 and 12, the partition air holes 71 may preferably have a vertically-oriented strip hole so as to correspond to the air vents 121 in the housing 1.

In order to further ensure that the air volumes of the turbulence channels 507 are consistent, in a further scheme, the total ventilation area of the ventilation openings 121 corresponding to the turbulence channels 507 is gradually increased along the direction away from the fan 2, that is, at the position close to the fan 2, the effect of the fan 2 is strong, the air flow speed flowing through the turbulence channels 507 is high, the ventilation area of the ventilation openings 121 corresponding to the turbulence channels 507 should be relatively small, and at the position away from the fan 2, the effect of the fan 2 is weak, the air flow speed flowing through the turbulence channels 507 is slow, the total ventilation area of the ventilation openings 121 corresponding to the turbulence channels 507 should be relatively large, so that the air volume flowing through the turbulence channels 507 is basically consistent in the heat dissipation process, the heat dissipation effect of each turbulence channel 507 is equivalent, the temperature of each electric core 41 is more balanced, and the problems of large temperature difference of the electric core 41, reduced service life and the like can be further effectively avoided. Since the ventilation area of the ventilation openings 121 corresponding to the turbulence channels 507 is gradually increased along the direction away from the fan 2, in implementation, this effect may be achieved by increasing the opening area of the ventilation openings 121 corresponding to the turbulence channels 507, or by increasing the number of openings of the ventilation openings 121 corresponding to the turbulence channels 507, for example, in this embodiment, the number of ventilation openings 121 corresponding to the air holes 71 of each partition gradually increases along the direction from the front panel 14 to the rear sealing plate 15 of the housing 1, as shown in fig. 1, so that the air volume of each turbulence channel 507 is balanced, so that the temperature of each battery cell 41 in the battery module is more balanced, and the service life of the battery cell 41 is prolonged.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model.

Claims

1. The battery module comprises a shell, battery components and a fan, and is characterized in that a plurality of ventilation openings are respectively arranged on two sides of the shell, at least two groups of battery components are arranged in the shell, each group of battery components comprises a battery core bracket and a battery core, which are arranged at intervals, and the battery core bracket is used for supporting the battery core;

the battery cell support is provided with a turbulent flow channel, and the turbulent flow channel is positioned between two adjacent battery cells;

the ends of each cell support in two adjacent groups of battery packs are mutually abutted to form a converging channel, each turbulent flow channel is respectively communicated with the converging channel and the ventilation opening, the turbulent flow channels and the converging channels form a radiating channel, the fan is positioned at one end of the radiating channel, and the fan radiates heat to the cells under the action of the fan and the turbulent flow channels.

2. The battery module of claim 1, wherein the cell holder comprises two branch holders, and the two branch holders abut against each other to form the turbulence channel.

3. The battery module according to claim 2, wherein the side surfaces of the sub-mount are constructed with upper and lower contact protrusions,

in the battery cell support, the upper contact protruding parts of the two sub-supports are mutually abutted, the lower contact protruding parts are mutually abutted, and the turbulent flow channel is jointly enclosed.

4. The battery module according to claim 3, wherein a turbulence member is provided in the turbulence passage, the turbulence member being provided at a side of the sub-mount and between the upper contact protrusion and the lower contact protrusion.

5. The battery module according to claim 4, wherein in the cell holder, when the two sub-holders are abutted against each other, the turbulence members on the two sub-holders are abutted against each other or staggered with each other, and divide the turbulence passage into at least two sub-passages in the height direction.

6. The battery module according to claim 4, wherein the turbulence member comprises a separation plate for separating the air flow and a plurality of turbulence parts provided at the separation plate, the turbulence parts being protrusions upward in the height direction of the turbulence passage or protrusions downward in the height direction of the turbulence passage, the turbulence parts being for changing the direction of the air flow.

7. The battery module according to claim 6, wherein a partial region of the separator protrudes upward to form the turbulence portion, or a partial region of the separator protrudes downward to form the turbulence portion;

and/or at least two turbulence members are arranged along the height direction of the turbulence channel, and the structures of the turbulence members are the same.

8. The battery module according to any one of claims 1 to 7, wherein one end of the cell support is constructed with a groove,

after the adjacent two groups of battery assemblies are mutually abutted, the grooves between the adjacent two groups of battery assemblies jointly form the converging channel.

9. The battery module according to claim 8, wherein the confluence channel is a circular channel or a square channel or a polygonal channel.

10. The battery module according to any one of claims 1 to 7, wherein in the outermost battery assembly, one end of the cell holder is configured with an air duct partition plate, and the air duct partition plate is matched with and abutted against the corresponding housing, so that an independent air inlet channel communicating with the turbulence channel and the ventilation opening is formed between two adjacent air duct partition plates.