CN219203403U - Power battery cell and row group structure - Google Patents

Abstract

The utility model provides a power battery cell and row group structure, which comprises cells placed in a cell fixing ring body, wherein the cells are in a regular eight-prism or regular twelve-prism structure, the cell row group comprises a plurality of cell fixing ring bodies loaded with the cells which are arranged in an array, ventilation channel structures are arranged between the cell fixing ring bodies and adjacent cell fixing ring bodies at equal intervals along an annular shape, and contact straight edges are formed between the cells and the adjacent cells at equal intervals along the annular shape. The utility model adopts the battery core with regular octagon and regular dodecagon structure, has small dead space, lower cost of single battery core, lighter weight and high energy density; the cell array has a ventilating duct structure and a contact straight edge which are arranged at intervals, and compared with a honeycomb structure behind the hexagonal cell array, the honeycomb structure solves the ventilation and heat dissipation problems behind the array, so that the safety is higher; compared with the traditional cylindrical battery cell, the problem of unstable multi-battery cell array structure is solved, and the terminal use safety is guaranteed.

Description

Power battery cell and row group structure

Technical Field

The utility model relates to the field of batteries, in particular to the technical field of polygonal power batteries, and specifically relates to a power battery cell and row group structure.

Background

As battery applications become more widespread, the battery industry is developing at a high rate, but battery safety and cost continue to be important directions for industry technology development. In the working process of the battery, the heat dissipation can influence the use safety of the battery and the utilization rate of the internal space of the battery, and the stability of the battery arrangement structure is closely related to the cost.

Compared with the conventional common cylindrical battery cell, the cylindrical battery cell is not strong in extrusion force resistance after being assembled, and the battery cell is weak in torsional rigidity, diamond shape resistance and ship shape deformation resistance;

compared with the existing common hexagonal battery cells, the battery cells are tightly attached, the heat dissipation problem exists, the capacity of the electrolyte is increased compared with that of the cylindrical battery cells, and the cost is correspondingly increased.

The utility model discloses a electric core mount pad and battery module among the prior art, patent number 201811429193.7 discloses an electric core mount pad and battery module, and battery module includes two at least electric core mount pads and installs a plurality of electric cores of arranging side by side on electric core mount pad, and electric core mount pad includes the pedestal, is equipped with the holding chamber that supplies the electric core to place the installation on the pedestal, hold the chamber by a plurality of mounting holes or mounting groove that correspond with more than one electric core respectively and constitute, two at least partial marginal butt joint of pedestal are assembled in the week side, the butt joint position of pedestal all is equipped with the splice, and the splice of two pedestal is relative to be pieced together and is made corresponding marginal position relatively to enclose more than one mounting hole or mounting groove, very big utilization the spatial structure of electric core mount pad, do not need the cooperation connection and cause the sacrifice on the structure of the hookup location of electric core mount pad and step down because of electric core mount pad, do benefit to the miniaturization of battery module, also make the structure of the battery module that forms through the splice connection more compacter.

The hexagonal battery cell is a structure of a common battery cell, but the problem caused by the close fit of the battery does exist, so with the continuous improvement of the technology, a battery structure capable of solving the heat dissipation problem and reducing the cost is needed.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a power battery cell and a row structure for solving the difficulties of the prior art.

To achieve the above and other related objects, the present utility model provides a method comprising:

a power cell array structure comprising:

the battery cell fixing ring comprises a battery cell fixing ring body 1, wherein the top of the battery cell fixing ring body 1 is open, and the periphery and the bottom form a closed structure;

the battery cell accommodating cavity 2 is formed in the battery cell fixing ring body 1, and the battery cell 3 is placed in the battery cell accommodating cavity 2 from the top;

the battery cell row group comprises a plurality of battery cell fixing ring bodies 1 loaded with battery cells 3, wherein the battery cell fixing ring bodies 1 are arranged in an array, ventilation channel structures 4 are arranged between the battery cell fixing ring bodies 1 and the adjacent battery cell fixing ring bodies 1 along annular equidistant intervals, and contact straight edges 5 are formed between the battery cells 3 and the adjacent battery cells 3 along annular equidistant intervals.

According to a preferred embodiment, the air duct structure 4 between adjacent cell retainer bodies 1 is common.

According to a preferred embodiment, the contact straight edges 5 between adjacent cells 3 coincide.

According to the preferred scheme, the cross section of the battery cell fixing ring body 1 in the overlooking direction is regular octagon;

the upper row of the battery cell fixing ring bodies 1 and the lower row of the battery cell fixing ring bodies 1 in the battery cell row group are positioned on the same vertical central line.

According to a preferred embodiment, the ventilation channel structure 4 is in the shape of a regular quadrilateral, and the contact straight sides 5 are provided with four on each cell 3.

According to a preferred embodiment, the air duct structure 4 is disposed at the upper left, upper right, lower left and lower right corners of each cell holder body 1, and the upper left, upper right, lower left and lower right air ducts 41, 42, 43 and 44 are formed for the corresponding cells 3.

According to a preferred embodiment, the top, bottom, left and right ends of each cell 3 are provided with a contact straight edge 5, and the contact straight edge 5 is correspondingly provided with a top contact straight edge 51, a bottom contact straight edge 52, a left contact straight edge 53 and a right contact straight edge 54, respectively.

According to the preferred scheme, the cross section of the battery cell fixing ring body 1 in the overlooking direction is in a regular dodecagon shape;

and a lower row of cell fixing ring bodies 1 are arranged between two adjacent cell fixing ring bodies 1 in the upper row in the cell row group.

According to a preferred scheme, the central axes of two adjacent cell fixing ring bodies 1 positioned in the upper row are coincident with the central axes of the cell fixing ring bodies 1 positioned in the lower row and arranged between the two.

According to a preferred embodiment, the ventilation channel structure 4 is in the shape of an equilateral triangle, and six contact straight sides 5 are arranged on each cell 3.

According to a preferred embodiment, the air duct structure 4 is disposed at 0 °, 60 °, 120 °, 180 °, 240 ° and 300 ° of the top of each cell holder body 1 in the clockwise direction, and the air duct structure 4 is disposed around each cell holder body 1 in six ways, namely, 0 ° air duct 401, 60 ° air duct 402, 120 ° air duct 403, 180 ° air duct 404, 240 ° air duct 405 and 300 ° air duct 406.

According to a preferred embodiment, each cell 3 is provided with contact straight edges 5 at 30 °, 90 °, 150 °, 210 °, 270 ° and 330 ° with a top of 0 ° in the clockwise direction, the contact straight edges 5 being provided with six contact straight edges, 30 ° contact straight edge 501, 90 ° contact straight edge 502, 150 ° contact straight edge 503, 210 ° contact straight edge 504, 270 ° contact straight edge 505 and 330 ° contact straight edge 506, respectively.

The utility model provides a power battery electric core, includes electric core 3, electric core 3 is placed in electric core retainer plate body 1, electric core 3 becomes regular eight prisms or regular twelve prismatic structure.

According to a preferred embodiment, the housing of the cell 3 is made of metal.

According to the preferred scheme, the battery cell 3 adopts a regular eight-prism structure, and then the four spaced vertical side faces are attached to the vertical side faces of the adjacent battery cells 3, and the other side faces are enclosed to form a regular quadrilateral ventilation channel.

According to the preferred scheme, the battery cell 3 adopts a regular dodecaprism structure, and then six vertical sides with intervals are attached to the vertical sides of the adjacent battery cells 3, and the rest sides are enclosed to form a regular triangle ventilation channel.

The utility model has the following beneficial effects:

(1) The battery cells adopting regular octagon and regular dodecagon structures have smaller dead space, less electrolyte, lower cost of the single battery cell, lighter weight and higher energy density;

(2) The cell array is tightly matched, a ventilating duct structure and a contact straight edge which are arranged at intervals are obtained, and compared with a honeycomb structure after the hexagonal cell array, the honeycomb structure solves the problem of ventilation and heat dissipation after the cell array, so that the safety is higher; compared with the traditional cylindrical battery cell, the problem of unstable multi-battery cell array structure is solved, and the terminal use safety is guaranteed.

Preferred embodiments for carrying out the present utility model will be described in more detail below with reference to the attached drawings so that the features and advantages of the present utility model can be easily understood.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment;

FIG. 2 shows an enlarged view of A in FIG. 1;

fig. 3 is a schematic structural diagram of a battery cell according to the first embodiment;

fig. 4 is a schematic perspective view of a second embodiment;

FIG. 5 shows an enlarged view of B in FIG. 4;

fig. 6 is a schematic structural diagram of a battery cell according to a second embodiment;

description of the reference numerals

1. A battery core fixing ring body; 2. a cell receiving cavity; 3. a battery cell;

4. a ventilation channel structure;

41. upper left corner ventilation ducts, 42, upper right corner ventilation ducts, 43, lower left corner ventilation ducts, 44, lower right corner ventilation ducts;

401. 0 degree ventilation channel, 402, 60 degree ventilation channel, 403, 120 degree ventilation channel, 404, 180 degree ventilation channel, 405, 240 degree ventilation channel, 406, 300 degree ventilation channel;

5. a contact straight edge;

51. the top end contact straight edge, 52, the bottom end contact straight edge, 53, the left end contact straight edge, 54, the right end contact straight edge;

501. 30 ° contact straight edge, 502, 90 ° contact straight edge, 503, 150 ° contact straight edge, 504, 210 ° contact straight edge, 505, 270 ° contact straight edge, 506, 330 ° contact straight edge.

Detailed Description

In order to make the objects, technical solutions and advantages of the technical solutions of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present utility model. Like reference numerals in the drawings denote like parts. It should be noted that the described embodiments are some, but not all embodiments of the present utility model. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present utility model fall within the protection scope of the present utility model.

Possible embodiments within the scope of the utility model may have fewer components, have other components not shown in the drawings, different components, differently arranged components or differently connected components, etc. than the examples shown in the drawings. Furthermore, two or more of the elements in the figures may be implemented in a single element or a single element shown in the figures may be implemented as multiple separate elements.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Likewise, the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

The utility model provides a power battery cell and row group structure which is used in a large-scale energy storage battery, and the utility model does not limit the type of the battery, but the power battery cell and row group structure is particularly suitable for products needing to consider heat dissipation and space utilization.

In general, the electric core 3 in the electric core of the power battery provided by the utility model is placed in the electric core fixing ring body 1, the electric core 3 is in a regular eight-prism or regular twelve-prism structure, the electric core 3 is in a structure of an electric core row group formed by the electric core fixing ring body 1, and an annular equidistant interval is arranged between the adjacent electric cores 3, and an air duct structure 4 and a contact straight edge 5 are arranged between the adjacent electric cores.

Because the battery cell 3 adopts the regular eight-prism or regular twelve-prism structure, two embodiments related to the battery cell row structure of the power battery are provided in the scheme, namely, a battery cell row group consisting of the battery cell 3 of the regular eight-prism and the battery cell fixing ring body 1, and a battery cell row group consisting of the battery cell 3 of the regular twelve-prism and the battery cell fixing ring body 1.

Example 1

Here, fig. 1 shows the arrangement of a cell fixing ring body 1, a cell accommodating chamber 2, a cell 3 and a cell array group, which are regular octagon-shaped in cross section in the plan view.

The battery cell holding cavity 2 is formed in the battery cell fixing ring body 1, and the battery cell fixing ring body 1 is in a regular octagon shape, so that the battery cell holding cavity 2 is also in the regular octagon shape, and the battery cell 3 in the regular octagon shape is enclosed in the battery cell fixing ring body 1 through the structure that the periphery and the bottom of the battery cell fixing ring body 1 are sealed.

As shown in fig. 1, in a cell row group formed by closely attaching the regular octagonal cell fixing ring bodies 1 in an array shape, each row of cell fixing ring bodies 1 carries the cell 3 and the cell fixing ring bodies 1 located right above and right below are located on the same vertical central line.

Therefore, as shown in fig. 2, regular tetragonal air duct structures 4 are formed along the outer circumference of the battery cells 3 at intervals, the air duct structures 4 are arranged at the left upper corner, the right upper corner, the left lower corner and the right lower corner of each battery cell fixing ring body 1, and the left upper corner air duct 41, the right upper corner air duct 42, the left lower corner air duct 43 and the right lower corner air duct 44 are formed corresponding to the battery cells 3, so that good heat dissipation channels with uniform heat dissipation distribution are provided;

next, as shown in fig. 3, the contact straight edges 5 of the electric core 1 are located at the top end, the bottom end, the left end and the right end of the electric core 3, that is, the top contact straight edge 51, the bottom contact straight edge 52, the left end contact straight edge 53 and the right end contact straight edge 54 which are overlapped and arranged at intervals between the adjacent electric cores 3 are formed, so that each electric core has 4 planes and is attached to the shell surface of another electric core in the same shape, and after the 8-angle-face electric core is spliced and arranged into a group, compared with the traditional cylindrical electric core arrangement mode, the stability and the safety of the electric core battery row group when being impacted by external force can be obviously improved.

Example two

Wherein, can see fig. 3, it shows that the transversal cross-section of overlooking takes the regular dodecagon shape electric core retainer plate body, electric core holds chamber, electric core and electric core row group's arrangement relation.

The battery cell holding cavity is formed in the battery cell fixing ring body, and the battery cell fixing ring body is in a regular dodecagon shape, so that the battery cell holding cavity is also in a regular dodecagon shape, and the battery cell 3 in the regular dodecagon shape is enclosed in the battery cell holding cavity through a structure that the periphery and the bottom of the battery cell fixing ring body are sealed.

As shown in fig. 4, in the cell row group formed by closely attaching the regular dodecagon-shaped cell fixing ring bodies in an array shape, the cell fixing ring bodies with the cells of the next row are arranged between the adjacent two cell fixing ring bodies with the cells of the previous row in the cell row group, that is, the central axes of the adjacent two cell fixing ring bodies 1 positioned in the previous row are coincident with the central axes of the cell fixing ring bodies 1 positioned in the next row and arranged between the two.

Accordingly, as shown in fig. 5, the equilateral triangle-shaped air duct structures are formed along the outer circumference of the battery cells at intervals, the air duct structures are arranged at 0 °, 60 °, 120 °, 180 °, 240 ° and 300 ° of the top of each battery cell holder body in the clockwise direction, and thus six air duct structures are arranged around each battery cell holder body, namely, 0 ° air duct 401, 60 ° air duct 402, 120 ° air duct 403, 180 ° air duct 404, 240 ° air duct 405 and 300 ° air duct 406, respectively, having good heat dissipation channels with uniform heat dissipation distribution;

next, as shown in fig. 6, the contact straight edges of the cells are positioned at 30 °, 90 °, 150 °, 210 °, 270 ° and 330 ° along the clockwise direction with the top of the cell being 0 °, that is, the contact straight edges 501, 90 ° contact straight edges 502, 150 ° contact straight edges 503, 210 ° contact straight edges 504, 270 ° contact straight edges 505 and 330 ° contact straight edges 506 which are overlapped and arranged at intervals between adjacent cells 3 are formed, so that each cell has 6 planes and is attached to the shell surface of another cell with the same shape, and after the 12-angle-face cell is assembled and arranged into a group, compared with the traditional cylindrical cell arrangement mode, the stability and the safety of the cell array group under the impact of external force can be obviously improved.

The specific explanation is that, on the basis that the shell of the battery cell 3 is made of metal, compared with a hexagonal battery cell, the battery cell has smaller dead space, less electrolyte, and compared with a honeycomb structure after the hexagonal battery cell is arranged, the battery cell has lower cost, lighter weight and higher energy density, and solves the ventilation and heat dissipation problems after the battery cell is arranged, so that the battery cell has higher safety;

compared with the traditional cylindrical battery cell, the problem of unstable multi-battery cell array structure is solved, and the terminal use safety is guaranteed.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (7)

1. The utility model provides a power battery electric core row group structure which characterized in that includes:

the battery cell fixing ring comprises a battery cell fixing ring body (1), wherein the top of the battery cell fixing ring body (1) is open, and the periphery and the bottom form a closed structure;

the battery cell accommodating cavity (2), the battery cell accommodating cavity (2) is arranged in the battery cell fixing ring body (1), and the battery cell (3) is put in from the top;

the battery cell row group comprises a plurality of battery cell fixing ring bodies (1) loaded with battery cells (3) in an array arrangement, ventilation channel structures (4) are arranged between the battery cell fixing ring bodies (1) and adjacent battery cell fixing ring bodies (1) along annular equidistant intervals, and contact straight edges (5) are formed between the battery cells (3) and the adjacent battery cells (3) along annular equidistant intervals.

2. The power battery cell array structure according to claim 1, wherein the cross section of the cell fixing ring body (1) in the top view direction is regular octagon;

the upper line of the battery cell fixing ring bodies (1) and the lower line of the battery cell fixing ring bodies (1) in the battery cell row group are positioned on the same vertical central line.

3. The power battery cell array structure according to claim 2, wherein the ventilation channel structure (4) is in a regular quadrilateral shape, and four contact straight sides (5) are arranged on each cell (3).

4. The power battery cell array structure according to claim 1, wherein the cross section of the cell retainer ring body (1) in the top view direction is in a regular dodecagon shape;

and a lower row of cell fixing ring bodies (1) are arranged between two adjacent cell fixing ring bodies (1) of the upper row in the cell row group.

5. The power battery cell array structure according to claim 4, wherein the ventilation channel structure (4) is in an equilateral triangle shape, and six contact straight sides (5) are arranged on each cell (3).

6. The utility model provides a power battery electric core, its characterized in that includes electric core (3), electric core (3) are placed in electric core retainer plate body (1), electric core (3) become regular eight prisms or regular twelve prismatic structure.

7. The power battery cell according to claim 6, characterized in that the housing of the cell (3) is made of metal.

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