CN218300019U

CN218300019U - Battery module and have its vehicle

Info

Publication number: CN218300019U
Application number: CN202222567471.3U
Authority: CN
Inventors: 谭璐; 牟丽莎; 涂少旭; 肖涵波
Original assignee: Chongqing Changan New Energy Automobile Technology Co Ltd
Current assignee: Deep Blue Automotive Technology Co.,Ltd.
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2023-01-13
Anticipated expiration: 2032-09-27

Abstract

The utility model discloses a battery module, battery module includes: the battery pack includes a first battery configured as a cylindrical battery having a polygonal cross section, and a second battery configured as a cylindrical battery, wherein the first battery has a plurality of circumferential surfaces extending in order at an outer circumference, and the second battery is configured as a plurality of cells, and an outer circumferential wall of each of the second batteries abuts against a corresponding at least one of the circumferential surfaces. According to the utility model discloses a battery module, through adopting cylinder battery and polygon column battery hybrid integrated's structure, cylinder battery group spare and polygon battery group spare are arranged in turn, have promoted the space utilization of battery module, have compromise the radiating surface of battery again and can not covered, have ensured the radiating effect of battery module, have improved the reliability of battery module.

Description

Battery module and have its vehicle

Technical Field

The utility model belongs to the technical field of the battery and specifically relates to a battery module and have its vehicle is related to.

Background

Along with the increase of new energy industry and energy storage electric power energy demand, in addition to the promotion to battery integrated efficiency, security requirement, the structural design of battery has become the main points. Among the correlation technique, by the integrated battery module of arranging of cylinder battery, the space is reserved too much, and the integration efficiency is low, by the integrated battery module of arranging of hexagonal prism structure battery, the space utilization upper limit has been improved, but it is obvious that the radiating surface of battery is covered, potential safety hazards such as thermal energy rise, how consequently compromise the battery again under the circumstances of guaranteeing space utilization and can not damage the problem that the one who treats the solution for this field reason because of overheated.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. For this reason, an object of the utility model is to provide a battery module, according to the utility model discloses a battery module, through adopting cylinder battery and the mixed integrated structure of polygon column battery, cylinder battery group and polygon battery group arrange in turn, have realized under the condition that promotes space utilization, have compromise the heat dissipation surface of battery again and can not be by obvious cover for the battery can not damage because of overheated.

The utility model discloses still provide a vehicle that has above-mentioned battery module.

According to the utility model discloses a battery module, including first battery and second battery, wherein, first battery structure is polygon column battery for the cross-section, and the second battery structure is the cylinder battery. Specifically, the first cell has a plurality of peripheral surfaces extending in sequence at the outer periphery, the second cell is configured in plurality and the outer peripheral wall of each of the second cells abuts against a corresponding at least one of the peripheral surfaces.

According to the utility model discloses a battery module, through adopting cylinder battery and the mixed integrated structure of polygon column battery, cylinder battery group and polygon battery group arrange in turn, have promoted the space utilization of battery module, have compromise the radiating surface of battery again and can not covered, have ensured the radiating effect of battery module, have improved the reliability of battery module.

According to some embodiments of the invention, the peripheral surface comprises a first peripheral surface configured as each surface of the first cells facing away from each other in a first direction, the first cells configured as a plurality and two adjacent first cells the first peripheral surfaces of the first cells being at least partially attached.

According to some embodiments of the invention, the peripheral surface comprises a second peripheral surface connected between two of the first peripheral surfaces, the second peripheral surface being adapted to abut with a peripheral wall of the second battery.

According to some embodiments of the present invention, the first battery is configured as a plurality of batteries arranged in sequence in a first direction, and the plurality of first batteries constitute a first battery group; the second battery is constructed into a plurality of batteries which are sequentially arranged in a first direction, the plurality of batteries form a second battery pack, and the first battery pack and the second battery pack are sequentially arranged in a second direction.

According to some embodiments of the present invention, the first battery pack and the second battery pack are each configured in a plurality, and the plurality of first battery packs and the plurality of second battery packs are alternately arranged in the second direction.

According to some embodiments of the invention, the first cells in each of the first cell groups are connected in series with each other, and the second cells in each of the second cell groups are connected in series with each other.

According to some embodiments of the invention, the first battery is configured as a hexagonal-prism battery.

According to some embodiments of the invention, the inscribed circle diameter of the cross-section of each first battery is a and satisfies: a is more than or equal to 15mm and less than or equal to 60mm.

According to some embodiments of the invention, the diameter of each second cell is the same as the inscribed circle diameter of the cross-section of the first cell.

The vehicle according to the present invention is briefly described below.

According to the utility model discloses a be provided with arbitrary one in the above-mentioned embodiment on the vehicle battery module, because according to the utility model discloses a be provided with arbitrary one in the above-mentioned embodiment on the vehicle battery module, consequently the continuation of the journey mileage of vehicle has obtained the promotion to carry out the in-process that charges and discharge at battery module, battery module's radiating effect is also secure, has avoided battery module to damage because overheated, and then has guaranteed the safety of vehicle in the driving process.

Additional aspects and advantages of the invention 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 invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a battery module according to an embodiment of the present invention;

fig. 2 is a schematic diagram of integrated stress and deformation directions according to an embodiment of the present invention.

Reference numerals are as follows:

the battery module 1, the first battery 11, the second battery 12, the first peripheral surface 13, the second peripheral surface 14, the heat dissipation gap 15, and the battery management unit 16.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

A battery module according to an embodiment of the present invention will be described with reference to fig. 1 to 2.

According to the utility model discloses a battery module 1, including first battery 11 and second battery 12, wherein, first battery 11 constructs for the cross-section is polygon column battery, and second battery 12 constructs for the cylinder battery. Specifically, the first battery 11 has a plurality of peripheral surfaces extending in order in the outer periphery, and the second battery 12 is configured in plurality with the outer peripheral wall of each of the second batteries 12 abutting against a corresponding at least one of the peripheral surfaces.

In some embodiments of the present invention, the battery module 1 is composed of two kinds of batteries, i.e., a polygonal cylindrical battery and a cylindrical battery, which are connected to each other through a connecting member. Because when battery module 1 all adopts the cylinder battery, because the cylinder battery has natural space when arranging, and the space is great, lead to battery module 1's integrated efficiency to hang down, when battery module 1 all adopts polygon column battery, although polygon column battery can not have the space when arranging and closely laminate, space utilization has obtained great promotion, but the radiating surface of battery is by obvious cover, potential safety hazards such as thermal energy rise. So the utility model discloses in, adopt cylinder battery and polygon column battery hybrid integrated's structure, under the condition that promotes space utilization, the radiating surface who has compromise the battery again can not be covered for the battery can not damage because of overheated.

In some embodiments of the present invention, the peripheral surface includes a first peripheral surface 13, the first peripheral surface 13 is configured as a surface of each first battery 11 deviating from each other in the first direction, and the first peripheral surfaces 13 of the first batteries 11 are configured to be at least partially attached to each other. Wherein, the first direction may be a length or width direction of the battery module 1.

Because first battery 11 constructs for the cross-section is polygon column battery, and two adjacent polygon column batteries make the first global 13 of two adjacent first batteries 11 at least partially laminate when arranging, can reach the purpose that improves space utilization, when adjacent polygon column battery is when the complete coincidence of first global 13 just right each other, can realize the space utilization maximize of battery module 1.

In some embodiments of the present invention, the peripheral surface includes a second peripheral surface 14, the second peripheral surface 14 is connected between the two first peripheral surfaces 13, and the second peripheral surface 14 is adapted to abut against the peripheral wall of the second battery 12. Since the second peripheral surface 14 of the first cell 11 is connected between the two first peripheral surfaces 13, and the second peripheral surface 14 abuts against the outer peripheral wall of the second cell 12, wherein the second cell 12 is configured as a cylindrical cell, when the second peripheral surface 14 of the first cell 11 abuts against the outer peripheral wall of the second cell 12 when the first cell 11 and the second cell 12 are arranged, since the second peripheral surface 14 is tangent to the outer peripheral wall of the second cell 12, a heat dissipation gap 15 can be formed between the first cell 11 and the second cell 12, and the heat dissipation gap 15 is used for dissipating heat of the system when the battery module 1 is charged and discharged, thereby preventing the cells from being damaged due to overheating, and solving the problem of poor heat dissipation performance of the battery module 1 caused by densely arranging a plurality of polygonal cells in the prior art.

In some embodiments of the present invention, the first battery 11 is configured as a plurality arranged in sequence in the first direction, and the plurality of first batteries 11 constitute a first battery 11 group; the second cell 12 is constructed in a plurality of cells arranged in sequence in the first direction, and the plurality of second cells 12 constitute a second cell 12 group, and the first cell 11 group and the second cell 12 group are arranged in sequence in the second direction. The second direction is in the same plane as the first direction and orthogonal to the first direction, the first direction may be a width direction of the battery module 1, and the second direction may be a length direction of the battery module 1.

Since the first cells 11 are sequentially arranged in the first direction and the second cells 12 are sequentially arranged in the first direction, it is ensured that the first cell 11 group and the second cell 12 group are more closely contacted in the sequential arrangement process in the second direction. And the first battery 11, i.e., the polygonal columnar battery, can be designed with a higher capacity than a cylindrical battery under the same space occupation ratio, so that the space utilization rate is improved, and the electric capacity of the whole battery module 1 is ensured.

In some embodiments of the present invention, the first battery 11 set and the second battery 12 set are both configured to be plural, and the plural first battery 11 sets and the plural second battery 12 sets are alternately arranged in the second direction. Since the first battery 11 group and the second battery 12 group are constructed in plurality, the electric capacity of the battery module 1 is secured. The plurality of first battery 11 groups and the plurality of second battery 12 groups are alternately arranged in the second direction, and the cross section of the first battery 11 is a polygonal cylindrical battery, the second battery 12 is a cylindrical battery, and the outer peripheral wall of the cylindrical battery is tangent to the second peripheral surface 14 of the first battery 11, so that the heat dissipation gap 15 is formed in the process that the first battery 11 groups and the second battery 12 groups are alternately arranged in the second direction, the heat dissipation gap 15 can be suitable for air flow circulation, and the heat dissipation effect of the battery module 1 is improved.

In an embodiment of the present invention, the polygonal columnar battery is a hexagonal prismatic battery, the cross section of the hexagonal prismatic battery can be a regular hexagon, wherein two surfaces of the first battery 11 facing each other in the first direction are configured as first surfaces, four sides of the first battery 11 in the second direction are configured as the aforementioned second surfaces, when the first battery 11 set and the second battery 12 set are alternately arranged in the second direction, a heat dissipation gap 15 is formed between the second surface of each first battery 11 and the adjacent second battery 12, and the heat dissipation effect of the battery module 1 is further improved. In addition, hexagonal prism battery can form the honeycomb structure when arranging, and the honeycomb structure has fine anti external force ability, so the honeycomb structure can further promote battery module 1's whole rigidity.

In an embodiment of the present invention, the inscribed circle diameter of the cross section of each first battery 11 is a and satisfies: a is more than or equal to 15mm and less than or equal to 60mm.

In one embodiment of the present invention, the diameter of each second battery 12 is the same as the diameter of the inscribed circle of the cross-section of the first battery 11. Because the diameter of every second battery 12 is the same with the inscribed circle diameter of the cross section of first battery 11 for first battery 11 group and second battery 12 group are when arranging in turn, because the group battery that second battery 12 constitutes can imbed between the group battery that two adjacent by first battery 11 constitute, when promoting battery module 1 space utilization, also increased battery module 1's heat radiating surface.

Further, when a first battery 11 or a second battery 12 in the battery module 1 expands, the battery generates pressure towards the adjacent battery, and because the mechanical stress of the polygonal columnar structure is stronger than that of the cylindrical structure, opposite extrusion can be generated between the batteries of the polygonal columnar structure, and the heat dissipation gap 15 formed by the alternate arrangement between the first battery 11 group and the second battery 12 group can also be used as a deformation space of the first battery 11, so that the safety of the battery module 1 is greatly improved.

In some embodiments of the present invention, the first batteries 11 in each first battery 11 group are connected in series with each other, and the second batteries 12 in each second battery 12 group are connected in series with each other. In an embodiment of the present invention, the battery module 1 is controlled by the battery management unit 16, the battery management unit 16 is used for controlling the charging, discharging or disconnecting of the first battery 11 set and the second battery 12 set respectively, and the battery management unit 16 is used for disconnecting the first battery 11 set and the second battery 12 set in time when the first battery 11 set and the second battery 12 set are out of order by controlling the states of the first battery 11 set and the second battery 12 set.

The utility model discloses an in one embodiment, battery module 1 still includes first temperature detecting element and second temperature detecting element, and first temperature detecting element is arranged in detecting the temperature of a plurality of first batteries 11 in the first battery 11 group, and second temperature detecting element is arranged in detecting the temperature of a plurality of second batteries 12 in the second battery 12 group. The first temperature detection unit and the second temperature detection unit are respectively electrically connected with the battery management unit 16, and the battery management unit 16 controls the charging, discharging or disconnecting of the first battery 11 group and the second battery 12 group according to the temperature signals detected by the first temperature detection unit and the second temperature detection unit.

The vehicle according to the present invention is briefly described below.

According to the utility model discloses a be provided with arbitrary one in the above-mentioned embodiment on the vehicle battery module 1, because according to the utility model discloses a be provided with arbitrary one in the above-mentioned embodiment on the vehicle battery module 1, consequently the continuation of the journey mileage of vehicle has obtained the promotion to at the in-process that battery module 1 carries out the charge-discharge, battery module 1's radiating effect is also secure, has avoided battery module 1 to damage because of overheated, and then has guaranteed the vehicle and has gone the safety of driving in-process.

In the description of the present invention, it is to 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", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present invention, "a plurality" means two or more.

In the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact via another feature therebetween.

In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. 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 invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery module, comprising:

a first battery (11), the first battery (11) being configured as a cylindrical battery having a polygonal cross section;

a second battery (12), the second battery (12) being configured as a cylindrical battery; wherein

The first battery (11) has a plurality of peripheral surfaces extending in sequence at the outer periphery, the second battery (12) is configured in a plurality and the outer peripheral wall of each second battery (12) abuts against at least one corresponding peripheral surface.

2. The battery module according to claim 1, characterized in that the circumferential surfaces comprise first circumferential surfaces (13), the first circumferential surfaces (13) being configured as surfaces of each of the first cells (11) facing away from each other in a first direction, the first cells (11) being configured in a plurality and the first circumferential surfaces (13) of two adjacent first cells (11) at least partially abut.

3. The battery module according to claim 2, characterized in that the peripheral surface comprises a second peripheral surface (14), the second peripheral surface (14) being connected between the two first peripheral surfaces (13), the second peripheral surface (14) being adapted to rest against the peripheral wall of the second battery (12).

4. The battery module according to claim 3, wherein the first cell (11) is constructed in a plurality of cells arranged in series in a first direction, and the plurality of first cells (11) constitute a first cell (11) group; the second cell (12) is configured to be a plurality of cells arranged in sequence in a first direction, the plurality of cells (12) form a second cell (12) group, and the first cell (11) group and the second cell (12) group are arranged in sequence in a second direction.

5. The battery module according to claim 4, wherein the first battery (11) group and the second battery (12) group are each configured in plurality, and a plurality of the first battery (11) groups and a plurality of the second battery (12) groups are alternately arranged in the second direction.

6. The battery module according to claim 5, wherein the first cells (11) in each of the first cell (11) groups are connected in series with each other, and the second cells (12) in each of the second cell (12) groups are connected in series with each other.

7. The battery module according to any one of claims 1 to 6, characterised in that the first battery (11) is configured as a hexagonal prism battery.

8. The battery module according to claim 7, wherein the cross section of each first cell (11) has an inscribed circle diameter of a and satisfies: a is more than or equal to 15mm and less than or equal to 60mm.

9. The battery module according to claim 7, wherein the diameter of each second cell (12) is the same as the diameter of an inscribed circle of the cross-section of the first cell (11).

10. A vehicle characterized by comprising the battery module according to any one of claims 1 to 9.