CN212209703U - Air-cooled plates and battery modules for battery modules - Google Patents

Abstract

The utility model discloses an air-cooling plate for a battery module and a battery module, wherein the air-cooling plate for the battery module comprises an air-cooling plate main body, a battery core installation space and a cooling air duct. The battery cell installation space is arranged on at least one side wall of the air-cooling plate main body; the cooling air duct is formed in the battery cell installation space, and the cooling air duct has an air-cooling plate air inlet and an air-cooling plate A plate air outlet, the air-cooling plate air inlet is formed at the vertical bottom of the cell installation space, and the air-cooled plate air outlet is formed at a lateral end of the cell installation space. The air-cooling plate can achieve better cooling effect on the battery cell, thereby making the heat exchange efficiency of the battery module higher and the overall cooling effect better.

Description

Air-cooled plates and battery modules for battery modules

technical field

The utility model relates to the technical field of vehicles, in particular to an air cooling plate and a battery module for a battery module.

Background technique

The air cooling plate in the traditional battery module has a poor cooling effect on the battery cells, resulting in a low heat exchange efficiency of the battery module, so that the overall cooling effect of the battery module is poor, which affects the safety of the battery module. Room for improvement.

Utility model content

In view of this, the present utility model aims to provide an air-cooling plate for battery modules, which can achieve better cooling effect on the battery cells, thereby making the heat exchange efficiency of the battery module higher, and the overall The cooling effect is better.

In order to achieve the above object, the technical scheme of the present utility model is achieved in this way:

An air-cooled plate for a battery module, comprising: an air-cooled plate main body; a cell installation space, the cell installation space is provided on at least one side wall of the air-cooled plate main body; a cooling air duct, the The cooling air duct is formed in the battery cell installation space, the cooling air duct has an air-cooling plate air inlet and an air-cooling plate air outlet, and the air-cooling plate air inlet is formed in the vertical direction of the battery cell installation space. At the bottom, the air outlet of the air cooling plate is formed at the lateral end of the cell installation space.

Further, the cooling air duct includes: a plurality of sub-air ducts, a plurality of air inlet ends of the plurality of sub-air ducts are respectively connected with the air inlet of the air-cooling plate, and a plurality of air outlets of the plurality of sub-air ducts The ends are respectively communicated with the air outlet of the air cooling plate.

Further, the two adjacent sub-air ducts are separated by air guide ribs.

Further, a guide slope is formed on one end of each of the air guide ribs close to the air inlet of the air cooling plate.

Further, the wind-guiding convex rib includes: a long convex rib and a short convex rib, the short convex rib is arranged between two adjacent long convex ribs, and the short convex rib extends horizontally and straight, so The long protruding rib includes: a straight section and a vertical section, the straight section extends horizontally and straightly, the vertical section extends vertically, and the lower end of the vertical section is close to the air-cooling plate inlet. tuyere.

Further, the main body of the air-cooling plate further comprises: a smoke exhaust structure of an explosion-proof valve of the electric core, the smoke exhausting structure of the explosion-proof valve of the electric core is arranged on the main body of the air-cooled plate and is located above the installation space of the electric core, the The lower end of the smoke exhaust structure of the electric core explosion-proof valve is provided with a communication hole of the electric core explosion-proof valve.

Further, the smoke exhaust structure of the electric core explosion-proof valve has a longitudinally penetrating smoke exhaust hole, and the smoke exhaust hole is communicated with the communication hole of the electric core explosion-proof valve.

Further, the air-cooled plate body further comprises: an upper support structure and a lower support structure, the upper support structure is arranged at the upper end of the air-cooled plate body, and the lower support structure is arranged at the lower end of the air-cooled plate body , the cell installation space is defined between the upper support structure and the lower support structure.

Further, the at least one side wall has two cell installation spaces, and a cell spacer is arranged between the two cell installation spaces.

Compared with the prior art, the air-cooling plate for the battery module of the present invention has the following advantages:

The air-cooling plate used for the battery module of the utility model can achieve a better cooling effect on the battery core, thereby making the battery module higher in heat exchange efficiency and better in overall cooling effect.

Another object of the present invention is to provide a battery module, including the above-mentioned air cooling plate for the battery module, the battery module has higher heat exchange efficiency and better overall cooling effect.

Description of drawings

The accompanying drawings that constitute a part of the present invention are used to provide further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

1 is a schematic structural diagram of a battery pack according to an embodiment of the present invention;

2 is an exploded view of a battery pack according to an embodiment of the present invention;

3 is an exploded view of a battery module according to an embodiment of the present invention;

4 is a schematic diagram of a partial structure of a battery module according to an embodiment of the present invention;

5 is a bottom view of a battery module according to an embodiment of the present invention;

6 is a schematic structural diagram of an air-cooled plate according to an embodiment of the present invention;

7 is a schematic diagram of a partial structure of a battery module according to an embodiment of the present invention.

Description of reference numbers:

1000-battery pack, 100-battery module, 200-case, 201-case air inlet, 202-case air outlet, 101-battery module air inlet, 102-battery module air outlet, 1-battery cell , 11-Explosion-proof valve, 2-Air cooling plate, 3-Cooling air duct, 4-Cell installation space, 31-Air cooling plate air inlet, 32-Air cooling plate air outlet, 33-Sub-air duct, 34-Guide Wind rib, 341-long rib, 342-short rib, 3411-straight section, 3412-vertical section, 343-guide slope, 21-battery explosion-proof valve smoke exhaust structure, 211-battery explosion-proof valve Connecting hole, 212-Smoke exhaust hole, 5-Positioning plug-in assembly, 51-Mounting matching hole, 52-Splicing matching sleeve, 53-Fixing hole, 6-Fixing rib, 22-Upper support structure, 23-Lower Support structure, 221-end upper support block, 222-middle upper support block, 231-end lower support block, 232-internal lower support block, 215-pair jack, 216-plug connector, 24-cell spacer , 7-end plate, 71-fixing rib with holes, 8-sealing ring, 300-BDU, 400-BMS.

Detailed ways

It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

The following describes the air cooling plate 2 for the battery module 100 according to the embodiment of the present invention with reference to FIGS. 1 to 7 .

The air-cooling plate 2 for the battery module 100 according to the embodiment of the present invention may include: an air-cooling plate body, a battery cell installation space 4 and a cooling air duct 3 .

As shown in FIG. 3 , FIG. 6 and FIG. 7 , the air cooling plate 2 has a cell installation space 4 , the cell installation space 4 is formed on at least one side wall of the air cooling plate 2 , and the cooling air duct 3 is formed on the battery cells In the installation space 4, that is, the two side walls of the inner air-cooling plate 2 have the cell installation space 4, while the end air-cooling plate 2 has only one side wall with the cell installation space 4, and the cell 1 is suitable for limiting The battery cells 1 are arranged between the two battery cell installation spaces 4 of the two adjacent air-cooled plates 2 to ensure the stability of the arrangement of the battery cells 1 , thereby ensuring the overall stability of the battery module 100 .

Wherein, each cell installation space 4 has a cooling air duct 3 , and each cell 1 is sandwiched between two cooling air ducts 3 of two adjacent air cooling plates 2 . That is to say, the two cooling air ducts 3 of the two air-cooling plates 2 can simultaneously cool the same battery cell 1, so that the cooling and heat exchange effect of the battery cell 1 is better, and the cooling exchange effect of the battery module 100 is further improved. The thermal effect is better.

The cooling air duct 3 is formed on at least one side wall of the air cooling plate 2 . Specifically, the air-cooling plate 2 includes: an inner air-cooling plate 2 and an end air-cooling plate 2, the end air-cooling plates 2 are arranged at both ends of the battery module 100, and the inner air-cooling plate 2 is located at the two end air-cooling plates 2 Between the cold plates 2, the end air-cooled plate 2 has only one side wall with cooling air ducts 3, while the two side walls of the inner air-cooled plate 2 are provided with cooling air ducts 3, and each side wall is provided with cooling air ducts 3. There is at least one cooling air duct 3, and each cooling air duct 3 corresponds to one battery cell 1. Therefore, it can also be said that each air cooling plate 2 can perform cooling and heat exchange on two or four battery cells 1 at the same time. The heat exchange efficiency can be higher, and the cooling effect can be better.

Further, the cooling air duct 3 has an air-cooling plate air inlet 31 and an air-cooling plate air outlet 32, wherein the air-cooling plate air inlet 31 is formed at the vertical bottom of the air-cooling plate 2 and is configured as a sub-section of the battery module air inlet 101 The air-cooling plate air outlet 32 is formed at the lateral end of the air-cooling plate 2 and is configured as a sub-air outlet of the battery module air outlet 102 . That is to say, the cooling gas entering from the housing air inlet 201 can enter the interior of the battery module 100 through a plurality of sub-air inlets at the same time, and can simultaneously perform synchronous cooling and heat exchange on all the cells 1 in the battery module 100, so that The overall heat exchange efficiency of the battery module 100 is further improved, thereby improving the overall heat exchange efficiency of the battery pack 1000 .

Moreover, the air-cooling plate air inlet 31 of each air-cooling plate 2 only communicates with its own air-cooling plate air-outlet 32, and does not communicate with the air-cooling plate air-outlets 32 of other air-cooling plates 2. Therefore, inside the battery module 100 Multiple synchronously operating refrigeration routes are formed to avoid turbulent flow and effectively improve heat exchange efficiency.

According to the air-cooling plate 2 for the battery module 100 according to the embodiment of the present invention, the air-cooling plate 2 can achieve a better cooling effect on the battery cell 1, thereby making the heat exchange efficiency of the battery module 100 higher. The cooling effect is better.

As shown in FIGS. 6 and 7 , the entire air-cooled plate 2 is manufactured by an injection molding manufacturing process, which can effectively ensure the overall strength of the air-cooled plate 2 . Wherein, the cooling air duct 3 includes: a plurality of sub-air ducts 33, the plurality of air inlet ends of the plurality of sub-air ducts 33 are respectively connected with the air-cooling plate air inlet 31, and the plurality of air outlet ends of the plurality of sub-air ducts 33 are respectively connected with The air outlet 32 of the air cooling plate communicates with each other. That is, the cooling air duct 3 is composed of a plurality of independent sub-air ducts 33, and the plurality of sub-air ducts 33 are independent of each other to avoid the phenomenon of turbulent flow, so that the cooling gas can flow through the air-cooling plate 2 more smoothly. In order to prevent the cooling gas from staying in the air-cooling plate 2 and affecting the cooling and heat exchange effect, the cooling and heat-exchanging effect of the air-cooling plate 2 on the battery cell 1 can be better, and the overall heat exchange effect of the battery module 100 can be improved. it is good.

Further, the two adjacent sub-air ducts 33 are separated by air guiding ribs 34 , and the air guiding ribs 34 abut against the side walls of the battery cell 1 . Wherein, the air guide ribs 34 are integrally formed on the air cooling plate 2 to ensure the stability of the arrangement. There are a plurality of air guide ribs 34 , and the plurality of air guide ribs 34 are arranged at equal intervals, so that the width of each sub-air duct 33 is equal, so as to facilitate uniform cooling and heat exchange throughout the cell 1 . In this way, the heat exchange can be made more uniform in all parts of the battery cell 1 , so as to improve the heat exchange effect of the air-cooled plate 2 .

Wherein, make the air guide ribs 34 abut against the side wall of the battery core 1, so that the battery core 1 can be clamped between the wind guide ribs 34 of two adjacent air-cooling plates 2, so as to ensure the electricity The arrangement of the core 1 is stable, and it can also have a certain buffering effect on the expansion of the battery 1, so as to effectively absorb the expansion of the battery 1 during charging and discharging, so as to avoid damage to the battery 1 and the battery module 100. .

Referring to FIG. 6 , a guide slope 343 is formed on one end of each air guide rib 34 close to the air inlet 31 of the air cooling plate. The guide slope 343 can effectively guide the flow, so that the cooling gas flowing in from the air inlet 31 of the air cooling plate can be evenly dispersed into the two sub-air ducts 33 on both sides by the air guide ribs 34 to further ensure The cooling gas flowing through each sub-air duct 33 can be equal, so as to further improve the balanced cooling effect on the battery cell 1 .

6 and 7, the wind guide ribs 34 include: long ribs 341 and short ribs 342, the short ribs 342 are arranged between two adjacent long ribs 341, and at the same time, the long ribs 342 The ribs 341 are also arranged between two adjacent short ribs 342 , for example, there are three long ribs 341 and two short ribs 342 . The short protruding rib 342 extends horizontally and straight, while the long protruding rib 341 includes: a straight section 3411 and a vertical section 3412, the straight section 3411 extends horizontally straight, the vertical section 3412 extends vertically, and The lower end of the straight section 3412 is close to the air inlet. The vertical section 3412 is suitable for introducing the cooling gas from the air-cooling plate air inlet 31 into the cooling channel, and the short ribs 342 distribute the cooling gas evenly into the sub-air channels 33 . However, all the air guide ribs 34 are not provided with long ribs 341 because if there are too many vertical sections 3412 at the air inlet 31 of the air cooling plate, it will be difficult for the cooling gas to enter the cooling channel. The form of the convex rib 341 and the short convex rib 342 can effectively ensure the intake air volume.

With reference to the embodiments shown in FIGS. 3 , 6 and 7 , the main body of the air-cooled plate further includes: a cell explosion-proof valve smoke exhaust structure 21 , and the cell explosion-proof valve smoke exhaust structure 21 is arranged on the upper end of the air-cooled plate 2 and located in the cooling air The upper part of the channel 3 is used for the smoke and dust and high temperature gas discharged from the explosion-proof valve 11 of the battery cell 1 when the battery cell 1 is thermally out of control. , so as to avoid damage to the battery module 100 .

Wherein, the lower end of the cell explosion-proof valve smoke exhaust structure 21 is provided with a cell explosion-proof valve communication hole 211, and the explosion-proof valve 11 of the cell 1 and the cell explosion-proof valve communication hole 211 are arranged in a direct fit. Each cell explosion-proof valve communication hole 211 is configured as a semi-circular structure, and the two cell explosion-proof valve communication holes 211 of two adjacent air-cooled plates 2 form a complete approximately circular hole to be connected with the two The explosion-proof valve 11 of the battery cell 1 between the air-cooled plates 2 is set facing each other, and the smoke and dust and high-temperature gas discharged from the explosion-proof valve 11 will flow into the battery explosion-proof valve smoke exhaust structure 21 through the communication hole 211 of the battery cell explosion-proof valve, so as to avoid The diffusion of smoke and high temperature gas will not affect the poles of the battery cell 1 , thereby ensuring the safety of the battery cell 1 and the battery module 100 .

Further, the smoke exhaust structure 21 of the cell explosion-proof valve is provided with a smoke exhaust hole 212 passing through the longitudinal direction. The smoke exhaust hole 212 is communicated with the communication hole 211 of the electric cell explosion-proof valve, and the plurality of smoke exhaust holes 212 of the plurality of air cooling plates 2 are communicated with each other. In order to form a smoke exhaust channel, the smoke exhaust outlet of the battery module 100 is arranged at both longitudinal ends of the battery module 100, and the smoke exhaust outlet is communicated with the smoke exhaust channel, thereby ensuring that no matter which battery cell 1 in the battery module 100 is. When thermal runaway occurs, the exhausted smoke and dust and high-temperature gas can flow through the exhaust channel and finally be exhausted from the exhaust outlet to the outside of the battery module 100, so as to avoid the thermal runaway cell 1 from causing damage to other cells 1, Therefore, it is possible to effectively avoid endangering other normal operating cells 1 , thereby effectively improving the overall safety of the battery module 100 .

As shown in FIG. 6 , the main body of the air-cooled plate further includes: an upper support structure 22 and a lower support structure 23, the upper support structure 22 is arranged at the upper end of the air-cooled plate body, and the lower support structure 23 is arranged at the lower end of the air-cooled plate body, wherein , the cell installation space 4 is defined between the upper support structure 22 and the lower support structure 23, and the cell 1 is suitable for being limitedly supported between the upper support structure 22 and the lower support structure 23, so as to realize the vertical alignment of the cell 1 limit.

Further, referring to FIG. 6 and FIG. 7 , at least one side wall has two battery cell installation spaces 4 , wherein the two side walls of the internal air-cooling plate 2 both have battery cell installation spaces 4 , and each side wall has a battery cell installation space 4 . Both have two cell installation spaces 4 . That is to say, each internal air-cooling plate 2 has four battery cell installation spaces 4, which can limit the four battery cells 1 at the same time. 100 has two rows of cells 1 .

Wherein, a cell spacer 24 is provided between the two cell installation spaces 4 on each side wall. The cell spacer 24 isolates the two adjacent cells 1 to avoid mutual influence between the two cells 1, and also reserves an expansion space for the two cells 1 to ensure the safety.

In addition, the outer ends of the upper support structure 22 and the lower support structure 23 have lateral stop walls, and the lateral stop walls and the cell spacers 24 can also limit the cell 1 in the lateral direction to match the upper support structure 22 and the lower support structure. 23 acts as a limit in the vertical direction to stably limit the installation of the battery cell 1 between two adjacent air-cooled plates 2 .

The battery module 100 according to another embodiment of the present invention includes the air-cooling plate 2 , the battery core 1 and the fixing ribs 6 described in the above embodiments for the battery module 100 .

As shown in FIG. 3-FIG. 7, there may be one cell 1 and two air-cooling plates 2; or multiple cells 1 and multiple air-cooling plates 2, each cell 1 along the thickness direction ( Longitudinal) is arranged between two adjacent air-cooled plates 2, and at the same time, each air-cooled plate 2 is also arranged between two adjacent cells 1 along the thickness direction (longitudinal direction), that is, the battery module 100 is The battery cells 1 and the air-cooled plates 2 are alternately stacked in groups.

Among them, in order to facilitate the assembly and fixation of the battery module 100, the present invention provides a positioning and matching structure between two adjacent air-cooling plates 2, so that when the battery module 100 is assembled, all the air-cooling plates 2 can be assembled together. They are positioned and assembled in sequence to improve assembly speed and assembly accuracy.

Further, the positioning and matching structure is provided with a fixing hole 53 penetrating in the longitudinal direction, and the battery module 100 further includes: a fixing rib 6 , and the fixing rib 6 is adapted to pass through the plurality of fixing holes 53 between the plurality of air-cooling plates 2 in sequence. In order to connect a plurality of air-cooled plates 2 . That is to say, the positioning and matching structure not only realizes the positioning and matching between the two adjacent air-cooled plates 2, but also integrates the function of tightening the battery module 100, so that the same structure has two functions at the same time, so , saves the layout space, and can make the overall structure of the air-cooled plate 2 more compact.

That is, the cooperation between the fixing ribs 6 and the fixing holes 53 realizes the horizontal and vertical limit connection between the plurality of air-cooled plates 2, so as to connect the plurality of air-cooled plates 2 in series, and the electric core 1 is limited in the phase. between two adjacent air-cooled plates 2, therefore, the stable grouping of the battery module 100 as a whole is achieved.

Further, referring to FIG. 3 , the battery module 100 further includes: an end plate 7 , the end plate 7 is disposed at both longitudinal ends of the battery module 100 , the end plate 7 has fixing rib fitting holes 71 , and the end of the fixing rib 6 is suitable for It is inserted and fixed with the fixing rib fitting hole 71 , and is fixedly connected with the fixing rib fitting hole 71 by welding, so as to realize the fixing of the battery modules 100 into groups.

The specific grouping method of the battery modules 100 is as follows: first, all the air-cooling plates 2 are assembled and installed in sequence through the positioning and matching structure, and at the same time, the battery cells 1 are arranged between the two adjacent air-cooling plates 2, and then the end The plate 7 is aligned with the air-cooled plate 2, and then the fixing rib 6 is used to pass through the fixing rib matching hole 71 and the fixing hole 53 in turn to complete the series connection of all the air-cooled plates 2 and the end plate 7, and finally the end of the fixing rib 6 is used. The battery module 100 is finally assembled into groups by welding and fixing the part and the fixing rib with the hole 71 .

With reference to the embodiments shown in FIGS. 3 , 6 and 7 , the positioning and matching structure includes: a positioning and inserting assembly 5 , a pair of inserting and matching holes 51 recessed into the air-cooling plate 2 is provided on one side wall of the air-cooling plate 2 , The other side wall of the air-cooled plate 2 is provided with a plug-fit sleeve 52 protruding toward the outside of the air-cooled plate 2, wherein the plug-fit hole 51 communicates with the plug-fit sleeve 52, and the fixing hole 53 is formed in the Plug and fit the sleeve 52, so that the fixing ribs 6 can pass through the air-cooling plate 2, so as to fix all the air-cooling plates 2 together in series.

Wherein, the plug-fit sleeve 52 of the air-cooled plate 2 is matched and inserted with the plug-in matching hole 51 of another adjacent air-cooled plate 2 to form a positioning and plug-in assembly 5, so as to realize the realization of two adjacent air-cooled plates. 2 with the installation.

The positioning and plug-in assemblies 5 are respectively formed on the upper support structure 22 and the lower support structure 23, so as to realize the overlap of the force-bearing structure and the fastening structure, that is, the upper support structure 22 and the lower support structure 23 not only have the opposite power cores 1 It has the function of limiting and supporting, and also has the function of cooperating with the fixing rib 6 to fasten the battery module 100 in the longitudinal direction, thereby making the structure of the air-cooling plate 2 more compact and more functional.

As shown in FIG. 6 , the upper support structure 22 includes: two end upper support blocks 221 and a middle upper support block 222 disposed between the two end upper support blocks 221 , the two end upper support blocks 221 are formed respectively At both lateral ends of the air-cooled plate 2 , a middle upper support block 222 is formed in the middle of the air-cooled plate 2 . The lower support structure 23 includes: two end lower support blocks 231 and two inner lower support blocks 232. The two end lower support blocks 231 are respectively formed at the lateral ends of the air-cooled plate 2, and the two inner lower support blocks 232 are formed On the air-cooled plate 2 and between the two end lower support blocks 231 .

Among them, the two upper end support blocks 221 are respectively facing the two lower end support blocks 231 up and down, and the inner lower support block 232 is located in the horizontal middle position between the end upper support block 221 and the middle upper support block 222, The support block 222 is located in the transverse middle position between the two inner lower support blocks 232 . In this way, the battery cells 1 supported between the upper support structure 22 and the lower support structure 23 can be subjected to more uniform force, so as to avoid damage to the battery cells 1 caused by excessive local force.

Moreover, the fixing ribs 6 pass through the upper support structure 22 and the lower support structure 23 respectively, so as to connect all the air-cooled plates 2 in series longitudinally from multiple positions, thereby ensuring the overall stability of the battery module 100 and improving the overall stability of the battery module 100. reliability.

With reference to the embodiments shown in FIGS. 3 , 6 and 7 , a pair of socket holes 215 recessed inward is provided on one longitudinal end of the battery explosion-proof valve smoke exhaust structure 21 , and the other longitudinal end of the battery explosion-proof valve smoke exhaust structure 21 is provided A plug 216 protruding outward is provided, and the socket 215 is communicated with the plug 216 so as to form a smoke exhaust hole 212 and form a smoke exhaust channel.

The connector 216 of the air-cooled plate 2 is mated with the socket 215 of another adjacent air-cooled plate 2, so as to facilitate the smoke exhaust structure of the two cell explosion-proof valves of the two adjacent air-cooled plates 2 The cooperating installation between 21 further ensures the continuity and tightness of the smoke exhaust channel, so that the smoke and dust and high temperature gas discharged from the explosion-proof valve 11 can only be discharged from the smoke exhaust outlets at the lateral ends of the battery module 100 .

As shown in FIGS. 2 , 3 , 5 , 6 and 7 , the lower part of the battery module 100 also has an installation groove for installing the sealing ring 8 , so that the sealing ring 8 can be stably arranged at the air inlet of the battery module 101 and the air inlet 201 of the casing to effectively seal, so as to prevent the cooling gas entering from the air inlet 201 of the casing from entering the battery pack 1000 without passing through the battery module 100, so as to ensure the protection of the battery module. 100 cooling effect.

Among them, a part of the installation groove is formed at the lower end of the inner lower support block 232 (refer to FIG. 6 and FIG. 7 ), and another part of the installation groove is formed at the lower end of the end plate 7 (refer to FIG. 3 ). Part of the installation grooves are fitted for installation, so as to ensure the sealing effect of all parts between the battery module 100 and the casing 200 .

The battery pack 1000 according to another embodiment of the present invention includes the battery module 100 and the casing 200 described in the above embodiments.

As shown in FIGS. 1-5 , the bottom wall of the housing 200 is provided with a housing air inlet 201 , and the side wall of the housing 200 is provided with a housing air outlet 202 . That is, the refrigerant gas is suitable to flow into the battery pack 1000 from the air inlet 201 of the casing, and finally flow out of the battery pack 1000 from the air outlet 202 of the casing, so as to control the flow direction of the refrigerant gas.

The casing 200 includes an upper casing and a lower casing. Both the upper casing and the lower casing can be stamped and processed from sheet metal, so that the overall structural strength of the casing 200 is greater, and the casing air inlet 201 is formed at the bottom. On the bottom wall of the casing, the casing air outlet 202 is formed on the side wall of the lower casing, and the upper casing and the lower casing are sealed through the flange surface to ensure the overall sealing of the casing 200, thereby ensuring Except for the housing air inlet 201 and the housing air outlet 202, the housing 200 has no air leakage position.

Further, the battery module 100 is disposed in the casing 200 and fixed on the bottom wall of the lower casing, so that the casing 200 can effectively protect the battery module 100 . A battery module air inlet 101 is formed at the bottom of the battery module 100 , and the casing air inlet 201 and the battery module air inlet 101 are directly opposite to each other and communicate with each other. The position where the outside of the battery module 200 enters the casing 200 , and the air inlet 101 of the battery module is the position where the refrigerant gas flowing into the casing 200 flows into the battery module 100 from the outside of the battery module 100 . That is to say, since the housing air inlet 201 and the battery module air inlet 101 are directly arranged in close contact with each other and communicate with each other, that is, the two are directly connected, and there is still a gap between the housing air inlet 201 and the battery module air inlet 101 . A sealing ring 8 is provided to achieve sealed communication between the two.

Therefore, the installation of the battery module 100 and the casing 200 can be made more convenient, and there is no need to set up a separate air guide channel between the casing air inlet 201 and the battery module air inlet 101, and there is no need to consider the sealing of the air passage. , that is, the air duct structure in the battery pack 1000 is effectively reduced, so that the overall structure of the battery pack 1000 is simpler and the cost is lower.

The battery module 100 is formed with a battery module air outlet 102 at both lateral ends, and the battery module air outlet 102 communicates with the casing air outlet 202 . That is to say, the cooling gas flowing in from the battery module air inlet 101 flows through the battery module 100 and cools the battery module 100, and then flows out from the battery module air outlets 102 at the horizontal ends of the battery module 100, and then flows out again. Through other components in the casing 200, the battery pack 1000 eventually flows out from the casing air outlet 202 to form a complete refrigeration cycle, thereby realizing effective cooling of the battery module 100 and the battery pack 1000 as a whole, so as to ensure the battery pack 1000 overall security.

Among them, the cooling gas is supplied from the bottom of the battery pack 1000 and the cooling gas is discharged from the side of the battery pack 1000 to cooperate with the battery module 100 to enter the cooling gas from the bottom and discharge the cooling gas from the side of the battery module 100. In this way, a better cooling effect for the battery module 100 can be achieved, and the cooling gas can flow through various positions in the battery pack 1000 to further ensure the heat exchange and cooling effect.

Specifically, the overall cooling method of the battery pack 1000 is as follows: the refrigerating gas enters the battery module 100 from the casing air inlet 201 at the bottom of the battery pack 1000 directly through the battery module air inlet 101 , and then the refrigerating gas passes through the battery module 100 . After cooling, it is discharged from the air outlet 102 of the battery module to the inside of the battery pack 1000 , and then the refrigerant gas flows through other areas in the battery pack 1000 to the BDU300 (Battery Disconnect Unit, battery pack 1000 circuit breaker unit) and BMS400 in the battery pack 1000 (Battery management system, battery management system) and the like for cooling, and finally the battery pack 1000 is discharged after the air is discharged from the casing 200 to complete the refrigeration cycle.

With reference to the embodiments shown in FIGS. 1-5 , the housing air inlet 201 is configured as a blowing air inlet. That is to say, the battery pack 1000 as a whole adopts the cooling method of blowing air to cool the battery pack 1000 , that is, the cooling gas is blown into the battery pack 1000 from the housing air inlet 201 , rather than being sucked into the battery pack 1000 . For example, a cooling fan can be used to communicate with the air inlet 201 of the housing to deliver cooling gas to the inside of the battery pack 1000 . Therefore, the airflow of the cooling gas flowing through the inside of the battery pack 1000 can be made stronger, so that the cooling effect is better, and it is possible to further avoid setting an air duct structure inside the battery pack 1000 .

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the within the scope of protection of the present invention.

Claims (10)

1. An air-cooled plate (2) for a battery module (100), characterized in that, comprising: The main body of the air-cooled plate; a cell installation space (4), the cell installation space (4) is provided on at least one side wall of the air-cooled plate main body; A cooling air duct (3), the cooling air duct (3) is formed in the battery cell installation space (4), and the cooling air duct (3) has an air cooling plate air inlet (31) and an air cooling plate outlet An air outlet (32), the air-cooling plate air inlet (31) is formed at the vertical bottom of the cell installation space (4), and the air-cooling plate air outlet (32) is formed in the cell installation space (4). 4) at the lateral ends. 2 . The air cooling plate ( 2 ) for a battery module ( 100 ) according to claim 1 , wherein the cooling air duct ( 3 ) comprises: a plurality of sub-air ducts ( 33 ). The plurality of air inlet ends of the sub-air ducts (33) are respectively connected with the air inlets (31) of the air cooling plate, and the plurality of air outlet ends of the plurality of the sub-air ducts (33) are respectively connected with the air cooling plate. The air outlet (32) is communicated. 3. The air-cooling plate (2) for a battery module (100) according to claim 2, wherein the two adjacent sub-air ducts (33) are formed by air-guiding ribs (34) separated. 4. The air cooling plate (2) for a battery module (100) according to claim 3, characterized in that, each of the air guiding ribs (34) is close to the air inlet (2) of the air cooling plate. A guide slope (343) is formed on one end of 31). 5. The air cooling plate (2) for a battery module (100) according to claim 3, characterized in that, the air guide ribs (34) comprise: long ribs (341) and short ribs (342), the short protruding ribs (342) are arranged between two adjacent long protruding ribs (341), the short protruding ribs (342) extend straightly in the transverse direction, and the long protruding ribs ( 341) comprises: a straight section (3411) and a vertical section (3412), the straight section (3411) extends horizontally straight, the vertical section (3412) extends vertically, and the vertical The lower end of the segment (3412) is close to the air cooling plate air inlet (31). 6. The air-cooling plate (2) for a battery module (100) according to claim 1, wherein the main body of the air-cooling plate further comprises: a battery core explosion-proof valve smoke exhaust structure (21), the The battery cell explosion-proof valve smoke exhaust structure (21) is arranged on the main body of the air-cooling plate and is located above the battery cell installation space (4), and the lower end of the battery cell explosion-proof valve smoke exhaust structure (21) is provided with The communication hole (211) of the explosion-proof valve of the battery cell. 7. The air-cooling plate (2) for a battery module (100) according to claim 6, characterized in that the smoke exhaust structure (21) of the explosion-proof valve of the battery cell has a longitudinally penetrating smoke exhaust hole. (212), the smoke exhaust hole (212) communicates with the communication hole (211) of the electric core explosion-proof valve. 8. The air-cooled plate (2) for a battery module (100) according to claim 1, wherein the air-cooled plate body further comprises: an upper support structure (22) and a lower support structure (23) ), the upper support structure (22) is arranged at the upper end of the air-cooled plate body, the lower support structure (23) is arranged at the lower end of the air-cooled plate body, and the upper support structure (22) is connected to the The cell installation space (4) is defined between the lower support structures (23). 9. The air-cooling plate (2) for a battery module (100) according to claim 1, wherein the at least one side wall has two installation spaces (4) for the battery cells, and the two A cell spacer (24) is arranged between each of the cell installation spaces (4). 10. A battery module (100), characterized by comprising the air cooling plate (2) for the battery module (100) according to any one of claims 1-9.

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