CN219144282U

CN219144282U - Battery monomer, battery module and electric equipment

Info

Publication number: CN219144282U
Application number: CN202320116590.9U
Authority: CN
Inventors: 吴祖钰; 刘俊军; 王佳宁; 易梓琦; 陈伟鑫; 马亚强
Original assignee: Xiamen Hithium Energy Storage Technology Co Ltd
Current assignee: Xiamen Hithium Energy Storage Technology Co Ltd
Priority date: 2023-01-12
Filing date: 2023-01-12
Publication date: 2023-06-06
Anticipated expiration: 2033-01-12

Abstract

The utility model discloses a battery monomer, a battery module and electric equipment. The battery cell includes: the shell is provided with a temperature regulating plate in the inner cavity of the shell, and the temperature regulating plate divides the inner cavity of the shell into at least two accommodating cavities; the bare cells are arranged in each accommodating cavity, and at least one bare cell is arranged in each accommodating cavity; the bare cell is attached to the temperature adjusting plate. In the battery cell, the bare cell is attached to the temperature regulating plate, so that the bare cell can directly exchange heat with the temperature regulating plate, transmission media between the bare cell and the temperature regulating plate are reduced, and the temperature control effect of the battery cell is improved.

Description

Battery monomer, battery module and electric equipment

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery monomer, a battery module and electric equipment.

Background

At present, the heat management design of the mainstream energy storage system mainly still relies on the battery monomer bottom to increase the liquid cooling board and arranges, designs corresponding runner that adjusts temperature in the liquid cooling board and lets in the coolant liquid, and finally through the effect that heat-conducting glue with liquid cooling board and battery monomer bond together reaches the heat transfer. However, this results in lower cooling efficiency, reducing the temperature control effect of the coolant on the battery.

Disclosure of Invention

The embodiment of the utility model provides a battery monomer, a battery module and electric equipment.

An embodiment of the present utility model provides a battery cell including:

the shell is provided with a temperature regulating plate in the inner cavity of the shell, and the temperature regulating plate divides the inner cavity of the shell into at least two accommodating cavities;

the bare cells are arranged in each accommodating cavity, and at least one bare cell is arranged in each accommodating cavity;

the bare cell is attached to the temperature adjusting plate.

In such a way, in the battery cell, the bare cell is attached to the temperature regulating plate, so that the bare cell can directly exchange heat with the temperature regulating plate, the transmission medium between the bare cell and the temperature regulating plate is reduced, and the temperature control effect of the battery cell is improved.

In certain embodiments, the receiving cavities are cuboid in shape, each of the receiving cavities having a width selected from the range [50mm,150mm ].

The accommodating cavity meeting the size range can avoid the problems that the heat exchange capacity is excessive and the volume energy density of the battery cell is reduced due to the fact that the thickness of the assembled bare cell is limited by the smaller width of the accommodating cavity, and meanwhile, the cooling of the bare cell in the thickness direction is insufficient due to the fact that the width of the accommodating cavity is too large, so that the temperature difference in the thickness direction is large.

In certain embodiments, the shell has a rectangular parallelepiped shape, the shell has a length selected from the range [300mm,1200mm ], and a height selected from the range [150mm,400mm ].

Therefore, the effect of capacity and energy achieved by integrating a large number of small-size battery monomers in the traditional technology can be achieved by adopting a smaller number of battery monomers, and meanwhile, electric connection, liquid cooling connection and the like in electric equipment or batteries using the battery monomers are simplified, and maintenance or repair in the use process is also simpler.

In some embodiments, the housing has a rectangular parallelepiped shape, the housing includes a first side, the first side being the side of the housing having the largest area, the area of the first side being selected from the range [45000mm ² ,480000mm ² ]And the shell side plate where the first side surface is positioned is attached to the bare cell.

Therefore, the temperature adjusting area of the bare cell can be increased to achieve a better temperature adjusting effect.

In some embodiments, the housing has a rectangular parallelepiped shape, the housing includes a first side, the first side is a side with the largest housing area, and the temperature adjustment plate is parallel to the first side.

Therefore, the heat exchange efficiency of the bare cell and the temperature regulating plate can be improved.

In some embodiments, the housing includes a second side and a third side perpendicular to the first side, the second side being perpendicular to the third side, the thermostat plate having a protrusion protruding from at least one of the second side and the third side.

Therefore, the subsequent welding process and the like can be conveniently realized, the temperature-adjusting plate is prevented from being damaged during welding, and the structural stability of the design is ensured.

In some embodiments, a temperature-adjusting flow passage is arranged in the temperature-adjusting plate, the temperature-adjusting plate is connected with a first connector and a second connector, the first connector is communicated with one end of the temperature-adjusting flow passage, and the second connector is communicated with the other end of the temperature-adjusting flow passage.

Therefore, the temperature of the bare cell can be adjusted by introducing temperature adjusting fluid into the temperature adjusting flow channel, and the temperature adjusting flow channel is convenient and simple and has low cost.

In some embodiments, the first joint and the second joint are located on both sides of a vertical central axis and on both sides of a horizontal central axis of the temperature adjustment plate, respectively.

Thus, the temperature control effect of the bare cell is further improved.

In certain embodiments, the tempering flow passage is a circuitous flow passage.

Thus, the temperature control effect of the bare cell is further improved.

In some embodiments, at least one side plate of the housing is configured as the temperature regulating plate, which is attached to the bare cell.

Thus, the temperature control effect of the bare cell is further improved.

The battery module of the embodiment of the utility model comprises the battery cell of any embodiment.

The electric equipment comprises the battery module.

In above-mentioned battery module and consumer, naked electric core pastes with the temperature regulating plate for naked electric core can directly carry out the heat exchange with the temperature regulating plate, has reduced the transmission medium between naked electric core and the temperature regulating plate, improves the free temperature control effect of battery.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained from the structures shown in these drawings without the need for inventive effort to a person skilled in the art.

Fig. 1 is a perspective view of a housing according to an embodiment of the present utility model;

FIG. 2 is another perspective view of a housing according to an embodiment of the present utility model;

FIG. 3 is a schematic dimensional view of a housing according to an embodiment of the utility model;

FIG. 4 is a top view of a thermostat plate of an embodiment of the present utility model;

FIG. 5 is a cross-sectional view of the thermostat plate of FIG. 4 taken along line A-A;

FIG. 6 is another cross-sectional view of a thermostat plate of an embodiment of the present utility model;

FIG. 7 is another perspective view of a housing according to an embodiment of the present utility model;

FIG. 8 is a further perspective view of a housing according to an embodiment of the present utility model;

fig. 9 is a perspective view of a battery cell according to an embodiment of the present utility model;

fig. 10 is another perspective view of a battery cell according to an embodiment of the present utility model;

fig. 11 is an exploded view of a battery module according to an embodiment of the present utility model;

fig. 12 is another exploded view of a battery module according to an embodiment of the present utility model;

FIG. 13 is a perspective view of a powered device according to an embodiment of the present utility model;

fig. 14 is a front view of a powered device according to an embodiment of the present utility model;

fig. 15 is a side view of an electrical device according to an embodiment of the present utility model.

Reference numerals illustrate:

the battery comprises a shell body-400, a battery monomer-100, a temperature regulating plate-440, an inner cavity-404, an opening-406, a top cover-408, a containing cavity-450, an upper plate-410, a lower plate-420, a side plate-430, a first side face-412, a first large face-414, a first narrow face-416, a first end face-418, a second side face-422, a third side face-424, a protruding part-426, a temperature regulating runner-470, a first connector-441, a second connector-442, a first area-443, a second area-444, a third area-445, a fourth area-446, a direct current runner-447, a curved runner-448, a battery-10, a box body-300, a first part-310, a second part-320, a connecting component-200, electric equipment-500 and a monitoring unit-11.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, as well as, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined. Either mechanically or electrically. Can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different features of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Referring to fig. 1 to 3 and 8, a battery cell 100 according to an embodiment of the present utility model includes a housing 400 and a bare cell, an inner cavity 404 of the housing 400 is provided with a temperature adjusting plate 440, and the temperature adjusting plate 440 divides the inner cavity 404 of the housing into at least two accommodating cavities 450. Each housing cavity 450 houses at least one bare cell. The bare cell is attached to the temperature regulating plate 440.

In the battery unit 100, the bare cell is attached to the temperature adjusting plate 440, so that the bare cell can directly exchange heat with the temperature adjusting plate 440, the transmission medium between the bare cell and the temperature adjusting plate 440 is reduced, and the temperature control effect of the battery module 10 is improved.

Specifically, the material of the housing 400 is not particularly limited, and the housing 400 may be made of a material having good heat exchange efficiency. In one embodiment, the material of the housing 400 is aluminum alloy, the die casting process can be utilized to melt the material and then pour the material into a mold, the required housing 400 is manufactured by one-time casting molding, the manufacturing process ensures the air tightness of the product, and no welding seam exists between the temperature adjusting plate 440 and the housing in the housing 400, so that the structural strength of the integrated design of the housing and the temperature adjusting plate 440 is improved. In other embodiments, the shape and size of the housing 400 and the design of the fine structure such as the internal runner may be changed by changing the shape of the casting mold. In other embodiments, the housing 400 may be manufactured by extrusion molding of aluminum bars, or the components of the housing 400 may be manufactured separately and then the whole housing 400 may be manufactured by welding or other connection methods, and the temperature adjusting plate 440 may be made of the same material as the housing or different materials.

The shape of the housing 400 is not particularly limited in the present utility model, and the shape of the housing 400 may be determined according to actual requirements.

In one embodiment, the case 400 may have a rectangular parallelepiped shape, and is suitable for the square battery cell 100. The shell 400 can be internally provided with a temperature adjusting plate 440, the temperature adjusting plate 440 divides the inner cavity 404 into two accommodating cavities 450, each accommodating cavity is cuboid, the temperature adjusting plate 440 can be a flat temperature adjusting plate and is parallel to the side surface with the largest area of the shell 400, the temperature adjusting plate 440 can form one side plate of the accommodating cavity 450, the length direction of the temperature adjusting plate 440 is along the length direction (such as the X-axis direction of fig. 1) of the shell 400, the temperature adjusting plate 440 is formed as the side plate with the largest area of the accommodating cavity 450, so that the temperature adjusting area of the bare cell is maximized, and the temperature control effect of the bare cell is further improved.

Two accommodation chambers 450 are arranged side by side along the width or height direction of the housing 400, one rectangular bare cell may be disposed in one of the accommodation chambers 450 and attached to the side surface of the temperature adjustment plate 440, and the other rectangular bare cell may be disposed in the other accommodation chamber 450 and attached to the side surface of the temperature adjustment plate 440. Thus, the opposite sides of the temperature adjusting plate 440 are directly attached to the bare cells in the two accommodating cavities 450.

In fig. 1, the housing 400 and the accommodating chamber 450 are rectangular, and have parallel longitudinal directions, parallel width directions, and parallel height directions. The longitudinal direction, the width direction, and the height direction may refer to the coordinate system in fig. 1, and specifically, the longitudinal direction may be the X-axis direction, the width direction may be the Y-axis direction, and the height direction may be the Z-axis direction.

In fig. 1, a rectangular parallelepiped housing 400 has an upper plate 410, a lower plate 420, and opposite side plates 430, which together enclose the housing 400 as designed. A temperature adjusting plate 440 is provided in the case 400, the temperature adjusting plate 440 is connected with the upper plate 410 and the lower plate 420 without gaps, and is parallel to the side plates 430, and the temperature adjusting plate 440 equally divides the inside of the case 400 into two receiving chambers 450 for receiving bare cells of the battery cells 100.

The temperature adjusting plate 440 can directly exchange heat with the bare cell, for example, when the bare cell needs to be cooled, the temperature adjusting plate 440 can directly take away heat of the bare cell during operation, so that the bare cell can reach a proper working temperature range more quickly. When the bare cell needs to be heated, the temperature adjusting plate 440 can directly heat the bare cell, so that the bare cell can reach a proper working temperature range faster, and the efficiency of the battery module 10 is improved.

It is understood that the number of the temperature adjusting plates 440 provided in the housing 400 is not limited to one, but may be two or more than two, and the number of the receiving cavities 450 is determined according to the number of the temperature adjusting plates 440, for example, two temperature adjusting plates 440 may divide the inner cavity 404 in the housing 400 into three receiving cavities 450, i.e., n temperature adjusting plates 440 may divide one inner cavity 404 into n+1 receiving cavities 450.

The number of bare cells disposed in each of the accommodating chambers 450 is not limited to one, and may be two or more, and is not particularly limited herein, and the number of bare cells disposed in each of the accommodating chambers 450 may be the same or different. The die may be formed by lamination, winding, or the like, and is not particularly limited herein.

The housing 400 is provided with an opening 406, the opening 406 is communicated with the accommodating cavity 450, the opening 406 can be used for accommodating the bare cell into the accommodating cavity 450, and after the bare cell is mounted, the opening 406 can be closed by utilizing the top cover 408, so that the accommodating cavity 450 forms a relatively sealed space.

In some embodiments, wherein the receiving cavities 450 are rectangular parallelepiped-shaped, the width D1 of each receiving cavity 450 is selected from the range [50mm,150mm ].

Thus, the accommodating cavity 450 meeting the above size range can avoid the problems of excessive heat exchange capacity and reduced volume energy density of the battery cell 100 caused by the small width of the accommodating cavity 450 and insufficient cooling of the bare cell in the thickness direction caused by the overlarge width of the accommodating cavity 450, thereby causing large temperature difference in the thickness direction.

Referring to fig. 3, the width D1 of each accommodating cavity 450 is selected from the range [50mm,150mm ], that is, 50mm is less than or equal to D1 is less than or equal to 150mm, no matter what form the bare cell in the accommodating cavity 450 is, if D1 is less than 50mm, the thickness of the bare cell in the accommodating cavity 450 is limited, the thinner the thickness is, the better the heat dissipation capability of the bare cell is, the shell 400 of the present utility model can cause energy density loss, waste of cooling capability and reduction of the volume energy density of the battery cell 100 because the shell 400 comprises the temperature adjusting plate 440.

If D1 is greater than 150mm, the thickness of the bare cell in the accommodating cavity 450 will be increased, the heat conduction of the battery cell 100 in the direction will be affected by the increased thickness, and the portion of the bare cell away from the temperature adjusting plate 440 can only dissipate heat to the external environment or the battery cell 100 through the housing 400, so that the heat dissipation capability is poor, the cooling effect in the thickness direction is poor, and the cooling is insufficient.

50mm is less than or equal to D1 is less than or equal to 150mm, so that the problems of excessive heat exchange capacity and reduced volume energy density of battery cells caused by the small limit of the width of the accommodating cavity 450 to the thickness of the assembled bare cell, insufficient cooling of the bare cell in the thickness direction caused by the overlarge width of the accommodating cavity 450 and large temperature difference in the thickness direction can be avoided.

In some examples, D1 may be 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, 110mm, 120mm, 130mm, 140mm, 150mm, or other values between 50mm and 150 mm.

The width of the different receiving chambers 450 in one housing 400 may be the same or different, and the width of the receiving chambers 450 may be selected from [50mm,150mm ]. Preferably, the width of the accommodating chambers 450 in one housing 400 is the same, and further, the length, width and height of all the accommodating chambers 450 in one housing are the same.

The height H1 and the length of the accommodating chamber 450 may be set according to actual requirements, or may be determined according to the length and the height of the housing.

In one embodiment, 60 mm.ltoreq.D1.ltoreq.120 mm.

In this way, the above two problems can be further improved. Preferably, all the accommodating chambers 450 in one housing 400 have the same length, width and height. In some examples, D1 may be 60mm, 70mm, 80mm, 90mm, 100mm, 110mm, 120mm, or other values between 60mm and 120mm.

In certain embodiments, referring to FIG. 3, the housing has a rectangular parallelepiped shape, the length L2 of the housing is selected from the range [300mm,1200mm ], and the height H2 is selected from the range [150mm,400mm ].

Therefore, the effect of capacity and energy achieved by integrating a large number of small-size battery monomers 100 in the prior art can be achieved by adopting a smaller number of battery monomers 100, and meanwhile, electric equipment or electric connection, liquid cooling connection and the like in a battery using the battery monomers 100 are simplified, and maintenance or repair in the use process is simpler.

Specifically, in the embodiment of the present utility model, since at least two accommodating chambers 450 are divided into one housing, each accommodating chamber 450 accommodates at least one bare cell, so that the battery cell 100 can accommodate at least two bare cells, the capacity and energy of the battery cell 100 can be greatly improved, and two adjacent accommodating chambers 450 can share one temperature adjusting plate 440 for adjusting temperature, the amount of required connecting fluid pipelines is not increased or is not increased too much while the accommodating and energy of the battery cell 100 are improved.

When the housing has the above characteristic dimensions, when the battery cell 100 is assembled into a battery or an electric device, a smaller amount of battery cells 100 can be adopted in the width direction of the electric device 500 (as shown in fig. 13, the orientation of fig. 13 can refer to the coordinate system of fig. 1), so that the effect of capacity and energy achieved by integrating a large amount of small-size battery cells 100 in the conventional technology can be achieved, and under the condition of realizing the same capacity and energy, the electric connection, liquid cooling connection and the like in the electric device or the battery are simplified due to the reduction of the number of battery cells 100, and maintenance or repair in the use process is also simpler.

Further, the upper limit of the length and height ranges of the housing also can enable the battery cell 100 to have good safety characteristics, so as to avoid the problem that substances such as heat and gas cannot be discharged in time when the battery cell 100 is out of control due to excessively high and excessively long housing. The width D2 of the housing may be determined according to the width D1 of the receiving chamber 450, the wall thickness of the housing, and the wall thickness of the temperature-adjusting plate 440. In one embodiment, the height H2 of the housing may range in value between the length L2 and the width D2.

The length L2 of the shell is selected from the range [300mm,1200mm ], that is, 300 mm.ltoreq.L2.ltoreq.1200 mm. In some examples, L2 may be 300mm, 350mm, 400mm, 450mm, 500mm, 550mm, 600mm, 650mm, 700mm, 750mm, 800mm, 850mm, 900mm, 950mm, 1000mm, 1050mm, 1100mm, 1150mm, 1200mm, or other values between 300mm and 1200mm.

The height H2 of the housing is selected from the range [150mm,400mm ], i.e. 150 mm.ltoreq.H2.ltoreq.400 mm. In some examples, H2 may be 150mm, 200mm, 250mm, 300mm, 350mm, 400mm, or other values between 150mm and 400mm.

In some embodiments, referring to fig. 1 and 3, the housing has a rectangular parallelepiped shape, the housing includes a first side 412, the first side 412 is a side with the largest area of the housing, and the area of the first side 412 is selected from the range [45000mm ] ² ,480000mm ² ]The side plate of the housing where the first side 412 is located is attached to the bare cell.

Specifically, in one embodiment, the first side 412 is parallel to the XZ plane, the first side 412 is the side with the largest housing area, and the area s=l2×h2 of the first side 412.

The area S of the first side 412 is selected from the range [45000mm ² ,480000mm ² ]The surface area ratio of the battery cell 100 can be greatly improved, and the temperature adjusting area of the bare cell is improved to achieve better temperature adjusting effect.

The area S of the first side 412 is selected from the range [45000mm ² ,480000mm ² ]I.e. 45000mm ² ≤S≤480000mm ² In some examples, S may be 45000mm ² 、50000mm ² 、70000mm ² 、100000mm ² 、150000mm ² 、180000mm ² 、200000mm ² 、250000mm ² 、300000mm ² 、350000mm ² 、400000mm ² 、410000mm ² 、420000mm ² 、440000mm ² 、450000mm ² 、470000mm ² 、480000mm ² Or 45000mm ² To 480000mm ² Other values in between.

In some embodiments, the housing has a rectangular parallelepiped shape, the housing includes a first side 412, the first side 412 is the side with the largest housing area, and the temperature adjustment plate 440 is parallel to the first side 412.

In this way, the heat exchange efficiency between the bare cell and the temperature adjustment plate 440 can be improved.

Specifically, referring to fig. 1, the rectangular parallelepiped housing has two first large faces 414, two first narrow faces 416, and two first end faces 418, and the first large faces 414, the first narrow faces 416, and the first end faces 418 are perpendicular to each other. In the embodiment shown in fig. 1, the first major surface 414 is parallel to the XZ plane, the first narrow surface 416 is parallel to the XY plane, the first end surface 418 is parallel to the YZ plane, and the first side surface 412 is the first major surface 414 and is the side surface with the largest housing area.

In order to further achieve good heat exchange efficiency, the bare cell (not shown) may be in a rectangular parallelepiped shape, and the bare cell has two second large faces, two second narrow faces, and two second end faces, where the second large faces, the second narrow faces, and the second end faces are perpendicular to each other. In the embodiment shown in fig. 1, the second major surface is parallel to the XZ plane, the second narrow surface is parallel to the XY plane, the second end surface is parallel to the YZ plane, and the second major surface is the side with the largest die area. Referring to fig. 1, the long side of the second large surface is in the length direction of the housing, such as the X-axis, the short side of the second large surface is in the height direction of the housing, such as the Z-axis, the long side of the second narrow surface is in the length direction of the housing, such as the X-axis, the short side of the second narrow surface is in the width direction of the housing, such as the Y-axis, the long side of the second end surface is in the height direction of the housing, such as the Z-axis, and the narrow side of the second end surface is in the width direction of the housing, such as the Y-direction.

The temperature adjusting plate 440 is parallel to the first side 412, so that the side surface area of the accommodating cavity 450 surrounded by the temperature adjusting plate 440 is larger, the second large surface is attached to the side surface of the temperature adjusting plate 440, the contact area between the bare cell and the temperature adjusting plate 440 can be ensured to be maximized, and the heat exchange efficiency of the bare cell and the temperature adjusting plate 440 is improved.

In some embodiments, the housing includes a second side 422 and a third side 424 perpendicular to the first side 412, the second side 422 being perpendicular to the third side 424, and the thermostat plate 440 has a protrusion 426, the protrusion 426 protruding from at least one of the second side 422 and the third side 424.

Therefore, the subsequent welding process and the like can be conveniently realized, the temperature adjusting plate 440 is prevented from being damaged during welding, and the structural stability of the design is ensured.

Specifically, referring to fig. 1, the first side 412 is a side of the housing along the Y axis, the second side 422 is a side of the housing along the X axis, the third side 424 is a side of the housing along the Z axis, and the temperature adjusting plate 440 has a protruding portion 426 protruding from one or both of the first sides 412 on the X axis, for example, the protruding portion 426 may be used when welding the joint, preventing the temperature adjusting plate 440 from being damaged when welding the joint, and ensuring structural stability of the design.

In one embodiment, the temperature control plate 440 may also have a projection 426 on the Z-axis that projects from one or both of the third sides 424.

In some embodiments, the housing has a rectangular parallelepiped shape, and the opening 406 is provided in at least one of two opposite side plates of the housing.

Thus, the bare cell is convenient to install.

Specifically, the opening 406 is provided in at least one of the two opposite side plates of the housing, so that the bare cell can be mounted into the accommodating cavity 450 from at least one direction of the housing, thereby improving the assembly efficiency.

In one embodiment, the opening 406 is formed in one side plate of the housing along the X-axis direction, that is, the opening 406 is formed in one of the first end surfaces 418, for example, the opening 406 is formed in the first end surface 418 along the X-axis direction, and the bare cell may be mounted into the receiving cavity 450 from the opening 406 along the X-axis direction.

In one embodiment, referring to fig. 1 and 2, the opening 406 is provided on two side plates of the housing along the X-axis direction, that is, the opening 406 is provided on two first end surfaces 418, for example, the opening 406 is provided on two first end surfaces 418 in the positive and negative directions of the X-axis, and a bare cell may be mounted in the accommodating cavity 450 from the opening 406 in the positive direction of the X-axis, and a bare cell may also be mounted in the accommodating cavity 450 from the opening 406 in the negative direction of the X-axis.

In one embodiment, the opening 406 is formed on one side plate of the housing along the Z-axis direction, that is, the opening 406 is formed on one first narrow surface 416 thereof, for example, the opening 406 is formed on the first narrow surface 416 along the Z-axis direction, and the bare cell may be mounted into the receiving cavity 450 from the opening 406 along the Z-axis direction.

In one embodiment, referring to fig. 7, the opening 406 is formed on two side plates of the housing along the Z-axis direction, that is, the opening 406 is formed on two first narrow surfaces 416, for example, the opening 406 is formed on two first narrow surfaces 416 in the positive and negative directions of the Z-axis, and a bare cell may be mounted in the accommodating cavity 450 from the opening 406 in the positive direction of the Z-axis, and a bare cell may also be mounted in the accommodating cavity 450 from the opening 406 in the negative direction of the Z-axis.

The mounting directions of the different bare cells can be the same or different. For example, when two bare cells need to be mounted in one housing cavity 450, two bare cells may be mounted in the housing cavity 450 from the opening 406 in the positive direction of the Z axis or from the opening 406 in the negative direction of the Z axis at the same time; alternatively, one die may be mounted in the housing cavity 450 through the opening 406 in the negative Z-axis direction, and the other die may be mounted in the housing cavity 450 through the opening 406 in the positive Z-axis direction.

In some embodiments, a temperature adjustment flow passage 470 is provided in the temperature adjustment plate 440, the temperature adjustment plate 440 is connected to a first connector 441 and a second connector 442, the first connector 441 is connected to one end of the temperature adjustment flow passage 470, and the second connector 442 is connected to the other end of the temperature adjustment flow passage 470.

Thus, the temperature of the bare cell can be adjusted by introducing temperature adjusting fluid into the temperature adjusting flow channel 470, and the temperature adjusting flow channel is convenient and simple and has low cost.

Specifically, the temperature adjusting fluid that may be introduced into the temperature adjusting flow passage 470 may be water, oil, gas or other medium fluid, which is not specifically limited herein. The first connector 441 may be referred to as an access connector and the second connector 442 may be referred to as an exhaust connector. The inlet and outlet fittings may be varied as described in terms of the change in flow direction of the tempering flow passage 470.

When the bare cell needs to be cooled, low-temperature fluid can be introduced into the temperature adjusting channel from the first connector 441, the low-temperature fluid exchanges heat with the bare cell through the temperature adjusting plate 440 in the flowing process, so as to cool the bare cell, the temperature adjusting fluid after heat exchange forms high-temperature fluid, the high-temperature fluid is discharged out of the temperature adjusting flow channel 470 through the second connector 442, the high-temperature fluid can be cooled outside the shell to reform the low-temperature fluid, and the low-temperature fluid is introduced into the temperature adjusting channel through the first connector 441 again, so that the circulation is realized, and the circulation cooling of the bare cell is realized.

When the bare cell needs to be heated, high-temperature fluid can be introduced into the temperature adjusting channel from the first connector 441, the high-temperature fluid exchanges heat with the bare cell through the temperature adjusting plate 440 in the flowing process, so as to heat the bare cell, the temperature adjusting fluid after heat exchange forms low-temperature fluid, the low-temperature fluid is discharged out of the temperature adjusting flow channel 470 through the second connector 442, the low-temperature fluid can be heated outside the shell to reform the high-temperature fluid, and the high-temperature fluid is introduced into the temperature adjusting channel through the first connector 441 again, so that the circulation is realized, and the cyclic heating of the bare cell is realized.

In conclusion, the temperature control effect of the bare cell can be achieved, heat transfer medium between the temperature adjusting fluid and the bare cell is reduced, and the temperature control effect of the bare cell is improved.

It is understood that in other embodiments, the temperature adjustment plate 440 may not include the temperature adjustment flow passage 470, and the temperature adjustment plate 440 may be a solid temperature adjustment plate.

In certain embodiments, the first and

second joints

441 and 442 are located on both sides of the vertical central axis V and on both sides of the horizontal central axis H of the temperature adjustment plate 440, respectively.

Thus, the temperature control effect of the bare cell is further improved.

Specifically, referring to fig. 4 and 5, the number of joints on each housing 400 is 2, and the temperature-adjusting plate 440 may be divided into a first region 443, a second region 444, a third region 445, and a fourth region 446 according to a vertical central axis V and a horizontal central axis H of the temperature-adjusting plate 440. In fig. 5, the first joint 441 is located at the edge of the second region 444 and the second joint 442 is located at the edge of the fourth region 446. In this way, when the temperature-adjusting fluid flows into the temperature-adjusting flow channel 470 from the first connector 441 and flows out of the temperature-adjusting flow channel 470 from the second connector 442, the span of the temperature-adjusting fluid flowing is larger, and the temperature-adjusting plate 440 with a larger area can flow through, so that the temperature-adjusting fluid exchanges heat with the temperature-adjusting plate 440 as much as possible, and further the temperature-adjusting fluid exchanges heat with the bare cell as much as possible, and the temperature control effect of the bare cell is further improved.

In one embodiment, the first connector 441 may be located at an edge of the fourth region 446 and the second connector 442 may be located at an edge of the second region 444.

In one embodiment, the first connector 441 may be located at an edge of the third region 445 and the second connector 442 may be located at an edge of the first region 443.

In one embodiment, the first connector 441 may be located at an edge of the first region 443 and the second connector 442 may be located at an edge of the third region 445.

In other embodiments, the number of joints may be greater than 2, and the joints may be provided on the same side of the temperature adjustment plate 440.

In some embodiments, the tempering flow passage 470 is a circuitous flow passage.

Thus, the temperature control effect of the bare cell is further improved.

Specifically, referring to fig. 5, the circuitous flow path may be a serpentine flow path including a plurality of straight flow paths 447 and a plurality of curved flow paths 448. In fig. 5, a plurality of straight flow channels 447 are uniformly arranged in parallel at intervals along the Z-axis direction, one end of the uppermost straight flow channel 447 is connected to the first connector 441, two adjacent straight flow channels 447 are connected end to end through a curved flow channel 448, and one end of the lowermost straight flow channel 447 is connected to the second connector 442. The bent flow channel 448 has a semicircular shape to reduce the flow resistance of the temperature-adjusting fluid. The design can enable the temperature regulating fluid to have a plurality of back and forth paths in the temperature regulating flow passage 470, the heat exchange time between the temperature regulating fluid and the bare cell is longer, the heat exchange efficiency can be improved, and the temperature control effect of the bare cell is further improved.

The entire temperature-adjusting flow passage 470 is substantially uniformly arranged inside the temperature-adjusting plate 440 so that the temperature-adjusting fluid can be sufficiently contacted with the temperature-adjusting plate 440, thereby further improving the temperature control effect of the bare cell.

In one embodiment, the circuitous flow path may be a Z-shaped flow path, or other shaped circuitous flow path, which provides for multiple flow directions of the temperature regulating fluid within the circuitous flow path in order to increase the contact area of the temperature regulating fluid with the temperature regulating plate 440.

In one embodiment, the design of the temperature-adjusting flow channel 470 can also adopt a parallel flow channel structure (as shown in fig. 6) or a modified or combined form of a serpentine flow channel and a parallel flow channel structure, and the shape of the temperature-adjusting flow channel 470, the width of the flow channel and the flow rate of the introduced temperature-adjusting fluid can be adjusted according to the requirement.

In some embodiments, at least one side plate of the housing is provided as a temperature regulating plate 440, the temperature regulating plate 440 being attached to the bare cell.

Thus, the temperature control effect of the bare cell is further improved.

Specifically, referring to fig. 10, in one embodiment, two temperature adjustment plates 440 are disposed in parallel, the two temperature adjustment plates 440 are respectively used as two opposite side plates of one accommodating cavity 450, and the bare cell is located between the two temperature adjustment plates 440 and is attached to the two temperature adjustment plates 440. The side plate where the first large surface 414 is located may be formed as a temperature adjustment plate 440.

In one embodiment, two temperature adjustment plates 440 may be vertically disposed. In fig. 7, two side plates where the two first narrow faces 416 arranged in the Z-axis direction are located, at least one side plate is formed as a temperature adjustment plate 440. In fig. 10, two side plates where the two first large faces 414 arranged in the Y-axis direction are located, at least one side plate is formed as a temperature adjustment plate 440. The direction of the opening of the accommodating chamber 450 is along the X-axis, and in one embodiment, the direction of the opening of the accommodating chamber 450 may also be along the Z-axis, and the number of openings may be selected.

The two temperature adjustment plates 440 may have the same or different structures, and are not particularly limited herein.

The material of the top cover 408 is not particularly limited in the present utility model. The material of the top cover 408 may be the same as or different from that of the housing 400. The top cover 408 may be connected to the housing 400 by welding. The top cover 408 can also be provided with a liquid injection hole, an anti-riot valve, a pole and the like, and the pole is electrically connected with the bare cell. One cap 408 may be mounted to the opening 406 of one housing 450, to two openings 406 of two housings 450, or to openings 406 of all housings 450. In fig. 8 and 9, a top cover 408 is mounted to an opening 406 of a receiving cavity 450.

In one embodiment, the same number of bare cells may be placed in the two accommodating cavities 450 of the housing 400, and the top cover 408 and the housing may be sealed and welded by using a laser welding method, and then the battery cell 100 may be obtained after the steps of liquid injection, formation, and the like are completed. Here, the external casing 400 of the bare cell is not only used as a structure for accommodating the bare cell, but also used as a side plate for adjusting temperature, and the temperature adjusting plate 440 of the accommodating cavity 450 is used for changing the external temperature adjusting mode of the traditional battery cell 100 into the direct temperature adjusting mode of the bare cell in the battery cell 100, so that the casing 400-temperature adjusting plate integrated structural design is formed. When the bare cell is in the shell, the second large surface of the bare cell can be respectively attached to the two surfaces of the temperature adjusting plate 440, and the temperature adjusting fluid can exchange heat with the second large surface of the bare cell when flowing through the temperature adjusting flow channel 470.

Referring to fig. 11 and 12, a battery module 10 according to an embodiment of the present utility model includes the battery cells 100 according to any one of the above embodiments.

Specifically, the battery module 10 further includes a case 300, and the plurality of battery cells 100 are accommodated in the case 300, and the case 300 can protect the battery cells 100 from being damaged. The battery cells 100 are prismatic battery cells 100, and at least some battery cells 100 of the plurality of battery cells 100 are connected by a connection assembly 200. Specifically, the connection assembly 200 may include a plurality of connection members, which may fixedly connect adjacent two of the battery cells 100, such as by welding.

In one embodiment, the case 300 may include a first portion 310 and a second portion 320, the first portion 310 and the second portion 320 together defining an accommodating space for accommodating the battery cell 100. The first portion 310 may be a plate-like structure that covers the open side of the second portion 320. The receiving space defined by the first portion 310 and the second portion 320 may have various shapes, such as: the cube, rectangular parallelepiped, cylindrical body, or the like is not particularly limited herein.

The case 300 may be provided with a plurality of battery cells 100, and the plurality of battery cells 100 may be connected in series, parallel or series-parallel, where series-parallel refers to that the plurality of battery cells 100 are connected in both series and parallel. The plurality of battery cells 100 may be directly placed into the case 300 after being connected in the above connection manner, or the plurality of battery cells 100 may be assembled into a module by serial connection, parallel connection, or series-parallel connection, and then placed into the case 300.

The battery cells 100 in the battery module 10 may be secondary battery cells 100 or primary battery cells 100, and may be lithium ion battery cells 100, lithium sulfur battery cells 100, lithium air battery cells 100, sodium ion battery cells 100, magnesium ion battery cells 100, and the like, which are not particularly limited herein.

The first large faces 414 of adjacent two battery cells 100 abut against each other. In another embodiment, a gap is reserved between the first large surface 414 and the first large surface 414 of at least part of the battery cells 100, so as to facilitate air cooling of the two battery cells 100 outside the battery cells 100.

In one embodiment, the connection pipe between the temperature adjustment plates 440 of the two battery cells 100 is made of plastic rubber, and the pipe may be connected to the connector on the temperature adjustment plate, for example, for one battery module 10, the connectors of the temperature adjustment plates 440 of all battery cells 100 are connected in series by the pipe, that is, one end of the pipe is connected to the discharge connector on one temperature adjustment plate 440, and the other end is connected to the inlet connector of the other temperature adjustment plate 440, and in another embodiment, the connection pipe between the temperature adjustment plates 440 of the two battery cells 100 may also be made of metal.

Referring to fig. 13, an electric device 500 according to an embodiment of the present utility model includes the battery module 10 according to the above embodiment.

In above-mentioned battery module 10 and consumer 500, the naked electric core of holding chamber 450 holding, naked electric core and temperature regulating plate 440 enclose into the side of holding chamber 450 and paste for naked electric core can directly carry out the heat exchange with temperature regulating plate 440, has reduced the transmission medium between naked electric core and the temperature regulating plate 440, has promoted the temperature control effect of temperature regulating plate 440 to naked electric core, and then improves the temperature control effect of battery module 10.

The powered device 500 may include one or more battery modules 10, and the plurality of battery modules 10 may be electrically connected in series, parallel, or series-parallel.

Powered device 500 may be at least one of an electrical energy storage device, a power energy storage device, and a consumer energy storage device.

The power type energy storage device comprises an energy storage electric box, an energy storage electric cabinet, an energy storage battery cluster, a container type energy storage system and the like, the power type energy storage device comprises a passenger car, a commercial car, a special car, a spacecraft, a ship, an electric bicycle, an electric motorcycle, an electric scooter and the like, and the consumer type energy storage device comprises a mobile phone, a flat plate, a notebook computer, an electric toy, an electric tool and the like. The battery module 10 of the embodiment of the utility model can be used for forming the power supply system of the electric equipment 500, so that the temperature control effect of the battery cells 100 and the space utilization rate in the power supply system are improved, the materials and manufacturing cost are reduced, and the production efficiency is improved.

Referring to fig. 13 to 15, the electric device is an energy storage electric cabinet. The battery module 10 is arranged in the energy storage electric cabinet, and the battery module 10 can be arranged in one layer or a plurality of layers. The battery module 10 may be used for charging an energy storage electric cabinet and also for supplying power to external electric equipment 500 of the energy storage electric cabinet. The energy storage electric cabinet also comprises functional units such as: monitoring unit 11, fire extinguishing unit, comprehensive detection, etc.

In summary, the present utility model provides a design of a housing 400, wherein a side plate of a larger area of a receiving cavity 450 is directly used as a temperature adjusting plate, so that the temperature adjusting plate can be integrated into the housing, thereby completing an integrated design of the housing and the temperature adjusting plate. The design omits the temperature regulation design that the traditional heat exchange needs to use heat-conducting glue, structural glue or heat-conducting structural glue and the like to bond the temperature regulation plate and the shell 400 together, shortens the contact distance between the bare cell inside the battery cell 100 and the temperature regulation fluid, and improves the heat exchange efficiency and the structural compactness.

Because the battery monomer 100 used in the battery module 10 has characteristic dimensions (such as the width of the accommodating cavity 450, the length and the height of the shell, the temperature adjusting area of the shell, etc.), for the electric equipment 500 with the same height, the number of the battery monomers 100 arranged in the height direction and the width direction of the electric equipment 500 can be reduced after the battery monomer 100 is used, the structure of the electric equipment 500 is simpler, the overall volume energy density is higher, the defect that a large number of air channels need to be reserved to cause the energy density to be reduced when the traditional air cooling design is adopted is avoided, and meanwhile, the heat exchange effect of the temperature adjusting design (such as liquid cooling design) in the system is also improved.

In addition, in the design, the arrangement position of the temperature regulating plate is the middle of two bare cells and is in contact with the large surface of each bare cell, so that the temperature regulating mode of the battery cell 100 is changed from traditional bottom temperature regulation to the large surface temperature regulation of the battery cell 100, the heat exchange area is increased, the problem of uneven heat dissipation of the battery cell 100 is avoided, the temperature control effect of balancing the upper temperature and the lower temperature in the height direction is realized, and meanwhile, the heat exchange time of temperature regulating fluid and the large surface of each bare cell is further prolonged by the snake-shaped flow channel in the temperature regulating plate. The designed housing 400 can change the number and the size of the bare cell accommodating cavity 450 and the temperature adjusting plate, and the housing 400 can be formed by die casting, so that the housing 400 has higher flexibility and adaptation degree according to the flexible change of the size, the shape, the fine structure in the runner and the like by changing the die casting die.

In the battery cell 100 of the present utility model, since the housing 400 has at least two accommodating chambers 450 capable of accommodating bare cells, in the manufacturing process of the battery cell 100, the bare cells and the housing 1:1 are turned into N:1 into the shell (N is more than or equal to 2), and the production beat of the battery monomer 100 is improved.

The battery module 10 and the electric equipment 500 provided by the utility model can realize longer service life, higher mass energy density and higher volume energy density due to better temperature regulation effect and more compact structure by adopting the battery module 10 or the electric equipment assembled by the battery cell 100.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery cell, comprising:

the bare cell is attached to the temperature adjusting plate.

2. The battery cell of claim 1, wherein the receiving cavities are rectangular in shape, each of the receiving cavities having a width selected from the range [50mm,150mm ].

3. The battery cell of claim 1, wherein the housing has a rectangular parallelepiped shape, and the housing has a length selected from the range [300mm,1200mm ], and a height selected from the range [150mm,400mm ].

4. The battery cell of claim 1, wherein the housing has a rectangular parallelepiped shape, the housing includes a first side, the first side being a side of the housing having a largest area, the area of the first side being selected from the range [45000mm ² ,480000mm ² ]And the shell side plate where the first side surface is positioned is attached to the bare cell.

5. The battery cell of claim 1, wherein the housing has a rectangular parallelepiped shape, the housing includes a first side, the first side is a side of the housing having the largest area, and the temperature adjustment plate is parallel to the first side.

6. The battery cell of claim 5, wherein the housing includes a second side and a third side perpendicular to the first side, the second side being perpendicular to the third side, the temperature adjustment plate having a protrusion protruding from at least one of the second side and the third side.

7. The battery cell as recited in claim 1, wherein a temperature adjustment flow passage is provided in the temperature adjustment plate, the temperature adjustment plate is connected with a first connector and a second connector, the first connector is communicated with one end of the temperature adjustment flow passage, and the second connector is communicated with the other end of the temperature adjustment flow passage.

8. The battery cell of claim 7, wherein the first and second connectors are located on either side of a vertical central axis and on either side of a horizontal central axis of the temperature adjustment plate, respectively.

9. The battery cell of claim 7, wherein the temperature conditioning flow path is a circuitous flow path.

10. The battery cell of claim 1, wherein at least one side plate of the housing is configured as the temperature regulating plate, the temperature regulating plate being affixed to the bare cell.

11. A battery module comprising the battery cell of any one of claims 1-10.

12. An electrical consumer comprising the battery module of claim 11.