CN216720179U

CN216720179U - Battery module

Info

Publication number: CN216720179U
Application number: CN202122980031.6U
Authority: CN
Inventors: 高禄杰; 王乾; 方杰; 王宝玉; 张耀
Original assignee: Sunwoda Electric Vehicle Battery Co Ltd
Current assignee: Xinwangda Power Technology Co ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-06-10
Anticipated expiration: 2031-11-29

Abstract

The application discloses battery module, including a plurality of battery cells, all do not constitute the return circuit between each battery cell's casing and two opposite utmost point posts of polarity, do not have the short circuit risk, consequently can cancel the outside cladding insulating film of casing and the baffle between the adjacent casing, make adjacent casing contact each other, thereby improve battery module's space utilization, reduce part quantity, reduce cost, and, direct contact between the adjacent casing, can also improve heat transfer efficiency, help the heat dissipation.

Description

Battery module

Technical Field

The application relates to the technical field of power batteries, in particular to a battery module.

Background

Among the correlation technique, including a plurality of battery cells in the battery module, each battery cell needs the cladding insulating film in order to guarantee insulating nature, need set up the baffle between the adjacent battery cell so that leave between the adjacent battery cell and be used for radiating space, the space utilization of battery module is low, and part quantity is more, is unfavorable for the lightweight of battery module and battery package, and can increase the manufacturing cost of battery module.

SUMMERY OF THE UTILITY MODEL

The present application is directed to solving at least one of the problems in the prior art. Therefore, the application provides a battery module, which can improve the space utilization rate of the battery module, reduce the number of parts and reduce the cost.

The embodiment of the first aspect of this application provides a battery module, including first battery cell, first battery cell is provided with a plurality ofly, first battery cell includes casing, two utmost point posts and two insulating parts, two utmost point post one-to-one connect in two the insulating part, two the insulating part all connect in the casing, the insulating part is located between the utmost point post with so that between the casing utmost point post with it is insulating between the casing, a plurality of first battery cell piles up in proper order and establish ties each other or parallelly connected, and is adjacent the casing contacts each other.

The battery module that this application first aspect embodiment provided has following beneficial effect at least: all insulating between two utmost point posts of first battery cell and the casing, a plurality of first battery cells pile up in proper order and establish ties or parallelly connected, all do not constitute the return circuit between each casing and two opposite utmost point posts of polarity, there is not the short circuit risk, consequently can cancel the outside cladding insulating film of casing and the baffle between the adjacent casing, make adjacent casing contact each other, thereby improve the space utilization of battery module, reduce the part quantity, and the cost is reduced, and, direct contact between the adjacent casing, can also improve heat transfer efficiency, help the heat dissipation.

In some embodiments of the present application, the material of the insulating member is insulating rubber.

The battery module that this application second aspect embodiment provided, including second battery cell, second battery cell is provided with a plurality ofly, second battery cell includes casing, positive post, negative pole post, insulating part and electrically conductive piece, negative pole post connect in the insulating part, positive post connect in electrically conductive piece, the insulating part reaches electrically conductive piece all connect in the casing, the insulating part is located the negative pole post with so that between the casing the negative pole post with it is insulating between the casing, electrically conductive piece is located the positive post with so that between the casing the positive post with electricity is connected between the casing is a plurality of second battery cell piles up in proper order and connects in parallel each other, and is adjacent the casing contacts each other.

The battery module that this application second aspect embodiment provided has following beneficial effect at least: the negative poles of the second single batteries are insulated from the shell, the positive poles are electrically connected with the shell, a plurality of second single batteries are sequentially stacked and connected in parallel, the negative poles are connected with each other, the positive poles are connected with each other, a loop is not formed between each shell and two poles with opposite polarities, and short circuit risk does not exist, so that an insulating film coated outside the shell and a partition plate between adjacent shells can be eliminated, and the adjacent shells are in mutual contact, so that the space utilization rate of the battery module is improved, the number of components is reduced, the cost is reduced, and in addition, the adjacent shells are in direct contact with each other, the heat transfer efficiency can be improved, and the heat dissipation is facilitated; in addition, each shell is electrically connected with the positive pole column, and each shell is positively charged, so that the corrosion of the shell in the use process can be reduced.

In some embodiments of the present application, the conductive member is made of conductive rubber, and the insulating member is made of insulating rubber.

The battery module provided by the embodiment of the third aspect of the present application includes a first single battery and a second single battery, where the first single battery includes a housing, two poles and two insulating members, the two poles are connected to the two insulating members in a one-to-one correspondence, both the two insulating members are connected to the housing, and the insulating members are located between the poles and the housing; the second single battery comprises the shell, a positive pole, a negative pole, the insulating part and the conductive part, the negative pole is connected with the insulating part, the positive pole is connected with the conductive part, the insulating part and the conductive part are both connected with the shell, the insulating part is positioned between the negative pole and the shell so as to insulate the negative pole from the shell, and the conductive part is positioned between the positive pole and the shell so as to electrically connect the positive pole and the shell; the first single battery and the second single battery are sequentially stacked and connected in parallel, or the second single battery passes through the negative pole column and the first single battery are connected in series, and the adjacent shells are in contact with each other.

The embodiment of the third aspect of the present application provides a battery module, which has at least the following beneficial effects: the two poles of the first single battery are insulated from the shell, the negative pole of the second single battery is insulated from the shell, the positive pole is electrically connected with the shell, the first single battery and the second single battery are sequentially stacked and are mutually connected in parallel, or the second single battery is connected in series with the first single battery through the negative pole, the shells of all the single batteries are connected with the positive pole of the second single battery, but all the negative poles are not connected with the shell or any positive pole, a loop is not formed between each shell and two poles with opposite polarities, and short circuit risk does not exist, so that an insulating film coated outside the shell and a partition plate between adjacent shells can be cancelled, and the adjacent shells are contacted with each other, thereby improving the space utilization rate of the battery module, reducing the number of parts and the cost, and improving the heat transfer efficiency due to the direct contact between the adjacent shells, heat dissipation is facilitated; in addition, each shell is electrically connected with the positive pole column, and each shell is positively charged, so that the corrosion of the shell in the use process can be reduced.

The battery module comprises a first battery pack and a second battery pack, wherein the first battery pack comprises a first single battery and comprises a shell, two poles and two insulating pieces, the two poles are connected to the two insulating pieces in a one-to-one correspondence manner, the two insulating pieces are connected to the shell, and the insulating pieces are positioned between the poles and the shell so as to enable the poles and the shell to be insulated; the second battery pack comprises a plurality of second single batteries, each second single battery comprises a shell, a positive pole column, a negative pole column, an insulating part and a conductive part, the negative pole column is connected to the insulating part, the positive pole column is connected to the conductive part, the insulating part and the conductive part are both connected to the shell, the insulating part is positioned between the negative pole column and the shell so as to insulate the negative pole column from the shell, the conductive part is positioned between the positive pole column and the shell so as to electrically connect the positive pole column and the shell, and the plurality of second single batteries are sequentially stacked and are mutually connected in parallel; wherein one of the negative electrode posts in the second battery pack is electrically connected to the first battery pack, and the adjacent cases are in contact with each other.

The battery module that this application fourth aspect embodiment provided has following beneficial effect at least: in the first battery pack, two poles of the first single battery are insulated from the shell, and no loop is formed between the shell and two poles with opposite polarities, so that short circuit risk does not exist; in the second battery pack, the negative pole posts of the second single batteries are insulated from the shell, the positive pole posts are electrically connected with the shell, a plurality of second single batteries are sequentially stacked and connected in parallel, one negative pole post in the second battery pack is electrically connected with the first battery pack, the shells of all the single batteries are connected with the positive pole posts of the second single batteries, but all the negative pole posts are not connected with the shell or any positive pole post, a loop is not formed between each shell and two poles with opposite polarities, and short circuit risk does not exist, so that an insulating film coated outside the shell and a partition plate between adjacent shells can be eliminated, and the adjacent shells are contacted with each other, so that the space utilization rate of the battery module is improved, the number of components is reduced, the cost is reduced, and the adjacent shells are directly contacted with each other, the heat transfer efficiency can be improved, and heat dissipation is facilitated; in addition, each shell is electrically connected with the positive pole column, and each shell is positively charged, so that the corrosion of the shell in the use process can be reduced.

The battery module provided by the embodiment of the fifth aspect of the application comprises a first battery pack and a second battery pack, wherein the first battery pack comprises a plurality of first single batteries, each first single battery comprises a shell, two poles and two insulating pieces, the two poles are connected to the two insulating pieces in a one-to-one correspondence manner, the two insulating pieces are connected to the shell, the insulating pieces are positioned between the poles and the shell so as to enable the poles and the shell to be insulated, and the first single batteries are sequentially stacked and connected in series or in parallel; the second battery pack comprises a second single battery, the second single battery comprises the shell, a positive pole, a negative pole, the insulating part and the conductive part, the negative pole is connected with the insulating part, the positive pole is connected with the conductive part, the insulating part and the conductive part are both connected with the shell, the insulating part is positioned between the negative pole and the shell so as to insulate the negative pole from the shell, and the conductive part is positioned between the positive pole and the shell so as to electrically connect the positive pole and the shell; the negative pole column in the second single battery is electrically connected with the first battery pack, and the adjacent shells are in contact with each other.

The battery module that this application fifth aspect embodiment provided has following beneficial effect at least: in the first battery pack, two poles of a first single battery are insulated from a shell, a plurality of first single batteries are sequentially stacked and connected in series or in parallel, and a loop is not formed between each shell and two poles with opposite polarities, so that short circuit risk does not exist; in the second battery pack, the negative pole column of the second single battery is insulated from the shell, the positive pole column is electrically connected with the shell, the negative pole column is electrically connected with the first battery pack, the shells of all the single batteries are connected with the positive pole column of the second single battery, but all the negative pole columns are not connected with the shell or any positive pole column, a loop is not formed between each shell and two pole columns with opposite polarities, and short circuit risk does not exist, so that an insulating film coated outside the shell and a partition plate between adjacent shells can be eliminated, the adjacent shells are contacted with each other, the space utilization rate of the battery module is improved, the number of parts is reduced, the cost is reduced, and the adjacent shells are directly contacted with each other, so that the heat transfer efficiency can be improved, and heat dissipation is facilitated; in addition, each shell is electrically connected with the positive pole column, and each shell is positively charged, so that the corrosion of the shell in the use process can be reduced.

The battery module provided by the embodiment of the sixth aspect of the application comprises a first battery pack and a second battery pack, wherein the first battery pack comprises a plurality of first single batteries, each first single battery comprises a shell, two poles and two insulating pieces, the two poles are connected to the two insulating pieces in a one-to-one correspondence manner, the two insulating pieces are connected to the shell, the insulating pieces are located between the poles and the shell so as to enable the poles and the shell to be insulated, and the first single batteries are sequentially stacked and connected in series or in parallel; the second battery pack comprises a plurality of second single batteries, each second single battery comprises a shell, a positive pole column, a negative pole column, an insulating part and a conductive part, the negative pole column is connected to the insulating part, the positive pole column is connected to the conductive part, the insulating part and the conductive part are both connected to the shell, the insulating part is positioned between the negative pole column and the shell so as to insulate the negative pole column from the shell, the conductive part is positioned between the positive pole column and the shell so as to electrically connect the positive pole column and the shell, and the plurality of second single batteries are sequentially stacked and are mutually connected in parallel; wherein one of the negative poles in the second battery pack is electrically connected to the first battery pack, and the adjacent cases are in contact with each other.

The battery module that this application sixth aspect embodiment provided has at least following beneficial effect: in the first battery pack, two poles of a first single battery are insulated from a shell, a plurality of first single batteries are sequentially stacked and connected in series or in parallel, and a loop is not formed between each shell and two poles with opposite polarities, so that short circuit risk does not exist; in the second battery pack, the negative pole posts of the second single batteries are insulated from the shell, the positive pole posts are electrically connected with the shell, a plurality of second single batteries are sequentially stacked and connected in parallel, one negative pole post in the second battery pack is electrically connected with the first battery pack, the shells of all the single batteries are connected with the positive pole posts of the second single batteries, but all the negative pole posts are not connected with the shell or any positive pole post, a loop is not formed between each shell and two poles with opposite polarities, and short circuit risk does not exist, so that an insulating film coated outside the shell and a partition plate between adjacent shells can be eliminated, and the adjacent shells are contacted with each other, so that the space utilization rate of the battery module is improved, the number of components is reduced, the cost is reduced, and the adjacent shells are directly contacted with each other, the heat transfer efficiency can be improved, and heat dissipation is facilitated; in addition, each shell is electrically connected with the positive pole column, and each shell is positively charged, so that the corrosion of the shell in the use process can be reduced.

The battery module provided by the embodiment of the seventh aspect of the present application includes a first battery pack and a second battery pack, the first battery pack includes a first single battery, the first single battery includes a housing, two poles and two insulating members, the two poles are connected to the two insulating members in a one-to-one correspondence, the two insulating members are both connected to the housing, and the insulating member is located between the poles and the housing to insulate the poles from the housing; the second battery pack comprises the first single battery and a second single battery, the second single battery comprises the shell, a positive pole column, a negative pole column, the insulating part and a conductive part, the negative pole column is connected with the insulating part, the positive pole column is connected with the conductive part, the insulating part and the conductive part are both connected with the shell, the insulating part is positioned between the negative pole column and the shell so as to enable the negative pole column and the shell to be insulated, the conductive part is positioned between the positive pole column and the shell so as to enable the positive pole column and the shell to be electrically connected, and the first single battery and the second single battery in the second battery pack are sequentially stacked and are mutually connected in parallel; and one negative pole column or one pole column in the second battery pack is electrically connected with the first battery pack, and the adjacent shells are in mutual contact.

The battery module provided by the seventh embodiment of the present application has at least the following beneficial effects: in the first battery pack, two poles of the first single battery are insulated from the shell, and no loop is formed between the shell and two poles with opposite polarities, so that short circuit risk does not exist; in the second battery pack, two poles of the first single battery are insulated from the shell, a negative pole of the second single battery is insulated from the shell, the positive pole is electrically connected with the shell, the first single battery and the second single battery are sequentially stacked and connected in parallel, one negative pole of the second battery pack is electrically connected with the first battery pack, the shells of all the single batteries are connected with the positive pole of the second single battery, but all the negative poles are not connected with the shell or any positive pole, and a loop is not formed between each shell and two poles with opposite polarities, so that short circuit risks do not exist, insulating films coated outside the shells and a partition plate between adjacent shells can be eliminated, and the adjacent shells are in mutual contact, thereby improving the space utilization rate of the battery module, reducing the number of components and the cost, and improving the heat transfer efficiency due to direct contact between the adjacent shells, heat dissipation is facilitated; in addition, each shell is electrically connected with the positive pole column, and each shell is positively charged, so that the corrosion of the shell in the use process can be reduced.

The battery module provided by the embodiment of the eighth aspect of the application comprises a first battery pack and a second battery pack, wherein the first battery pack comprises a plurality of first single batteries, each first single battery comprises a shell, two poles and two insulating pieces, the two poles are connected to the two insulating pieces in a one-to-one correspondence manner, the two insulating pieces are connected to the shell, the insulating pieces are positioned between the poles and the shell so as to enable the poles and the shell to be insulated, and the first single batteries are sequentially stacked and connected in series or in parallel; the second battery pack comprises the first single battery and a second single battery, the second single battery comprises the shell, a positive pole column, a negative pole column, the insulating part and a conductive part, the negative pole column is connected with the insulating part, the positive pole column is connected with the conductive part, the insulating part and the conductive part are both connected with the shell, the insulating part is positioned between the negative pole column and the shell so as to enable the negative pole column and the shell to be insulated, the conductive part is positioned between the positive pole column and the shell so as to enable the positive pole column and the shell to be electrically connected, and the first single battery and the second single battery in the second battery pack are sequentially stacked and are mutually connected in parallel; and one negative pole column or one pole column in the second battery pack is electrically connected with the first battery pack, and the adjacent shells are in mutual contact.

The battery module that this application aspect embodiment provided has following beneficial effect at least: in the first battery pack, two poles of a first single battery are insulated from a shell, a plurality of first single batteries are sequentially stacked and connected in series or in parallel, and a loop is not formed between each shell and two poles with opposite polarities, so that short circuit risk is avoided; in the second battery pack, two poles of the first single battery are insulated from the shell, a negative pole of the second single battery is insulated from the shell, the positive pole is electrically connected with the shell, the first single battery and the second single battery are sequentially stacked and connected in parallel, one negative pole of the second battery pack is electrically connected with the first battery pack, the shells of all the single batteries are connected with the positive pole of the second single battery, but all the negative poles are not connected with the shell or any positive pole, and a loop is not formed between each shell and two poles with opposite polarities, so that short circuit risks do not exist, insulating films coated outside the shells and a partition plate between adjacent shells can be eliminated, and the adjacent shells are in mutual contact, thereby improving the space utilization rate of the battery module, reducing the number of components and the cost, and improving the heat transfer efficiency due to direct contact between the adjacent shells, heat dissipation is facilitated; in addition, each shell is electrically connected with the positive pole column, and each shell is positively charged, so that the corrosion of the shell in the use process can be reduced.

Additional aspects and advantages of the present application 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 present application.

Drawings

The present application is further described with reference to the following figures and examples, in which:

fig. 1 is a perspective view schematically illustrating a battery module according to some embodiments provided in the first or fifth aspect of the present application;

fig. 2 is a perspective view schematically illustrating a battery module according to some embodiments provided in the first or second aspect of the present application;

fig. 3 is a perspective view of a battery module according to some embodiments provided in a fifth aspect, a sixth aspect, or an eighth aspect of the present application;

fig. 4 is a perspective view of a battery module according to some embodiments provided in a fourth aspect, a fifth aspect, or a seventh aspect of the present application;

fig. 5 is a perspective view of a battery module according to some embodiments provided in a third aspect of the present application;

fig. 6 is a schematic perspective view of a first single battery of a battery module according to some embodiments provided in the first aspect, the third aspect, the fourth aspect, the fifth aspect, the sixth aspect, the seventh aspect, or the eighth aspect of the present application;

fig. 7 is a perspective view of a second unit cell of a battery module according to some embodiments provided in the second aspect, the third aspect, the fourth aspect, the fifth aspect, the sixth aspect, the seventh aspect, or the eighth aspect of the present application.

Reference numerals:

the battery pack comprises a first single battery 100, a shell 110, a pole post 120, an insulating part 130, a conductive part 140, a positive pole post 150, a negative pole post 160, a second single battery 200, a bus bar 300, a shell 400, a first battery pack 10 and a second battery pack 20.

Detailed Description

Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar 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 application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the positional descriptions referred to, for example, the directions or positional relationships indicated above, below, left, right, etc., are based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present application and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present application.

In the description of the present application, unless otherwise expressly limited, terms such as set, mounted, connected and the like should be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the terms in the present application by combining the detailed contents of the technical solutions.

Reference throughout this specification to the description of "one embodiment," "some embodiments," 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 application. 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.

In the present application, all the first single batteries 100 have the same structure, and referring to fig. 6, the first single battery 100 includes a housing 110, two poles 120 and two insulating members 130, the two poles 120 are connected to the two insulating members 130 in a one-to-one correspondence, the two insulating members 130 are connected to the housing 110, and the insulating members 130 are located between the poles 120 and the housing 110 to insulate the poles 120 from the housing 110; all the second single batteries 200 have the same structure, referring to fig. 7, each second single battery 200 includes a casing 110, a positive post 150, a negative post 160, an insulating member 130, and a conductive member 140, the negative post 160 is connected to the insulating member 130, the positive post 150 is connected to the conductive member 140, the insulating member 130 and the conductive member 140 are connected to the casing 110, the insulating member 130 is located between the negative post 160 and the casing 110 to insulate the negative post 160 from the casing 110, and the conductive member 140 is located between the positive post 150 and the casing 110 to electrically connect the positive post 150 to the casing 110. The insulating member 130 may be made of insulating rubber, the conductive member 140 may be made of conductive rubber, and the conductivity of the rubber material may be changed by changing the carbon content in the rubber, for example, the rubber with a smaller or no carbon content is insulating rubber, and may be made into the insulating member 130; the rubber with a larger carbon content is a conductive rubber, and can be made into the conductive member 140. The following embodiments are not described in detail.

The battery module that this application first aspect embodiment provided, including first battery cell 100, first battery cell 100 is provided with a plurality ofly, and a plurality of first battery cell 100 pile up in proper order and establish ties or connect in parallel each other, and adjacent casing 110 contacts each other.

For example, as shown in fig. 1 and 2, the battery module includes a plurality of first unit batteries 100, and referring to fig. 6, two terminals 120 of each first unit battery 100 are insulated from the housing 110, and the housing 110 is not charged. Referring to fig. 1, a plurality of first unit cells 100 are sequentially stacked and connected in series, referring to fig. 2, a plurality of first unit cells 100 are sequentially stacked and connected in parallel, each of the housings 110 and the two poles 120 having opposite polarities do not form a loop therebetween, and there is no short-circuit risk, so that an insulating film covering the exterior of the housing 110 and a partition between adjacent housings 110 may be eliminated, and the adjacent housings 110 may be in contact with each other, thereby improving the space utilization of the battery module, reducing the number of components, and reducing the cost. In addition, the adjacent housings 110 are in direct contact with each other, which can improve heat transfer efficiency and contribute to heat dissipation.

The battery module that this application second aspect embodiment provided, including second battery cell 200, second battery cell 200 is provided with a plurality ofly, and a plurality of second battery cell 200 pile up in proper order and connect in parallel each other, and adjacent casing 110 contacts each other.

For example, as shown in fig. 2, the battery module includes a plurality of second unit cells 200, the plurality of second unit cells 200 are sequentially stacked and connected in parallel, each negative post 160 is connected to each other, each positive post 150 is connected to each other, no loop is formed between each housing 110 and the positive post 150 and the negative post 160, and there is no short circuit risk, so that an insulating film covering the exterior of the housing 110 and a partition between adjacent housings 110 may be eliminated, and the adjacent housings 110 are in contact with each other, thereby improving the space utilization of the battery module, reducing the number of components, and reducing the cost. In addition, the adjacent housings 110 are in direct contact with each other, which can improve heat transfer efficiency and contribute to heat dissipation. In addition, referring to fig. 7, the positive post 150 of the second unit cell 200 is connected to the conductive member 140, the conductive member 140 is connected to the case 110, and the case 110 is positively charged, so that corrosion of the case 110 during use can be reduced.

The battery module provided by the embodiment of the third aspect of the present application includes a first single battery 100 and a second single battery 200, where the first single battery 100 and the second single battery 200 are sequentially stacked and connected in parallel, or the second single battery 200 is connected in series with the first single battery 100 through the negative pole 160, and the adjacent cases 110 are in contact with each other.

For example, as shown in fig. 5, the battery module includes a first single battery 100 and a second single battery 200, the first single battery 100 and the second single battery 200 are stacked in sequence, the second single battery 200 is connected in series with the first single battery 100 through a negative post 160, all the cases 110 are connected with the positive post 150 of the second single battery 200, but neither the negative post 160 of the second single battery 200 nor the negative post 120 of the first single battery 100 is connected with the case 110 or the positive post 150 of any second single battery 200 or the positive post 120 of the first single battery 100, no loop is formed between each case 110 and two opposite posts 120 or between the positive post 150 and the negative post 160, and there is no risk of short circuit, so that an insulating film covering the outside of the case 110 and a partition between adjacent cases 110 are eliminated, and adjacent cases 110 are in contact with each other, therefore, the space utilization rate of the battery module is improved, the number of parts is reduced, and the cost is reduced. In addition, the adjacent housings 110 are in direct contact with each other, which can improve heat transfer efficiency and contribute to heat dissipation. In addition, each housing 110 is electrically connected to the positive post 150, and each housing 110 is positively charged, which can reduce corrosion of the housing 110 during use.

It is understood that the first unit cell 100 and the second unit cell 200 may be connected in parallel with each other.

The battery module provided by the embodiment of the fourth aspect of the present application includes a first battery pack 10 and a second battery pack 20, where the first battery pack 10 includes a first single battery 100, the second battery pack 20 includes a plurality of second single batteries 200, and the plurality of second single batteries 200 are sequentially stacked and connected in parallel; one negative electrode tab 160 of the second cell stack 20 is electrically connected to the first cell stack 10, and the adjacent cases 110 are in contact with each other.

For example, as shown in fig. 4, the battery module includes a first battery pack 10 and a second battery pack 20, the first battery pack 10 includes a first single battery 100, two terminals 120 of the first single battery 100 are insulated from the housing 110, no loop is formed between the housing 110 and two terminals 120 with opposite polarities, and there is no risk of short circuit; the second battery pack 20 includes a plurality of second unit cells 200, the plurality of second unit cells 200 being sequentially stacked and connected in parallel with each other; one negative pole 160 in the second battery pack 20 is electrically connected to the first battery pack 10, and all the cases 110 are connected to the positive pole 150 of the second battery cell 200, but none of the negative pole posts 120 of the first battery cell 100 and none of the negative pole posts 160 of the second battery cell 200 are connected to the case 110 or any of the positive pole posts 120 of the first battery cell 100 or any of the positive pole posts 150 of the second battery cell 200, and no short circuit risk is formed between each case 110 and two opposite poles 120 or between the positive pole post 150 and the negative pole post 160, so that an insulating film coated outside the case 110 and a partition between adjacent cases 110 can be eliminated, and the adjacent cases 110 are in contact with each other, thereby improving the space utilization rate of the battery module, reducing the number of components, and reducing the cost. In addition, the adjacent housings 110 are in direct contact with each other, which can improve heat transfer efficiency and contribute to heat dissipation. In addition, the positive post 150 of the second cell 200 is connected to the conductive member 140, the conductive member 140 is connected to the case 110, the case 110 of the second cell 200 is positively charged, and the case 110 of the first cell 100 is in contact with the case 110 of the second cell 200, so that the positive post is also positively charged, and corrosion of the case 110 during use can be reduced.

The battery module provided by the embodiment of the fifth aspect of the present application includes a first battery pack 10 and a second battery pack 20, where the first battery pack 10 includes a plurality of first single batteries 100, and the plurality of first single batteries 100 are sequentially stacked and connected in series or in parallel; the second battery pack 20 includes a second unit cell 200, and the negative electrode tab 160 of the second unit cell 200 is electrically connected to the first battery pack 10, and the adjacent cases 110 are in contact with each other.

For example, as shown in fig. 1, the battery module includes a first battery pack 10 and a second battery pack 20, the first battery pack 10 includes a plurality of first single batteries 100, the plurality of first single batteries 100 are sequentially stacked and connected in series or in parallel, two terminals 120 of the first single batteries 100 are insulated from the housing 110, the plurality of first single batteries 100 are sequentially stacked and connected in series or in parallel, each housing 110 and two terminals 120 with opposite polarities do not form a loop, and there is no risk of short circuit; the second battery pack 20 includes a second battery cell 200, the negative post 160 of the second battery cell 200 is electrically connected to the first battery pack 10, all the cases 110 are connected to the positive post 150 of the second battery cell 200, but none of the negative posts 120 of the first battery cell 100 and none of the negative posts 160 of the second battery cell 200 are connected to the cases 110 or any of the positive posts 120 of the first battery cell 100 or any of the positive posts 150 of the second battery cell 200, and no short circuit risk exists between each case 110 and two opposite-polarity posts 120 or between the positive posts 150 and the negative posts 160, so that an insulating film covering the outside of the case 110 and a partition between adjacent cases 110 can be eliminated, and the adjacent cases 110 can be in contact with each other, thereby improving the space utilization rate of the battery module, reducing the number of components, and reducing the cost. In addition, the adjacent housings 110 are in direct contact with each other, which can improve heat transfer efficiency and contribute to heat dissipation. In addition, the positive post 150 in the second unit cell 200 is connected to the conductive member 140, the conductive member 140 is connected to the housing 110, the housing 110 of the second unit cell 200 is positively charged, and the housing 110 of the first unit cell 100 is directly or indirectly in contact with the housing 110 of the second unit cell 200, so that the positive post is also positively charged, and the corrosion of the housing 110 in the using process can be reduced.

The battery module provided by the embodiment of the sixth aspect of the present application includes a first battery pack 10 and a second battery pack 20, where the first battery pack 10 includes a plurality of first single batteries 100, and the plurality of first single batteries 100 are sequentially stacked and connected in series or in parallel; the second battery pack 20 includes a plurality of second unit cells 200, the plurality of second unit cells 200 being sequentially stacked and connected in parallel with each other; one negative electrode tab 160 of the second battery stack 20 is electrically connected to the first battery stack 10, and the adjacent cases 110 are in contact with each other.

For example, as shown in fig. 3, the battery module includes a first battery pack 10 and a second battery pack 20, the first battery pack 10 includes a plurality of first unit batteries 100, and the plurality of first unit batteries 100 are sequentially stacked and connected in series with each other; the second battery pack 20 includes a plurality of second unit cells 200, the plurality of second unit cells 200 being sequentially stacked and connected in parallel with each other; one negative pole 160 in the second battery pack 20 is electrically connected to the first battery pack 10, and all the cases 110 are connected to the positive pole 150 of the second battery cell 200, but none of the negative pole posts 120 of the first battery cell 100 and none of the negative pole posts 160 of the second battery cell 200 are connected to the case 110 or any of the positive pole posts 120 of the first battery cell 100 or any of the positive pole posts 150 of the second battery cell 200, and no short circuit risk is formed between each case 110 and two opposite poles 120 or between the positive pole post 150 and the negative pole post 160, so that an insulating film coated outside the case 110 and a partition between adjacent cases 110 can be eliminated, and the adjacent cases 110 are in contact with each other, thereby improving the space utilization rate of the battery module, reducing the number of components, and reducing the cost. In addition, the adjacent housings 110 are in direct contact with each other, which can improve heat transfer efficiency and contribute to heat dissipation. In addition, the positive post 150 in the second unit cell 200 is connected to the conductive member 140, the conductive member 140 is connected to the housing 110, the housing 110 of the second unit cell 200 is positively charged, and the housing 110 of the first unit cell 100 is directly or indirectly in contact with the housing 110 of the second unit cell 200, so that the positive post is also positively charged, and the corrosion of the housing 110 in the using process can be reduced.

It is understood that a plurality of first unit batteries 100 in the first battery pack 10 may also be connected in parallel with each other.

A battery module provided in an embodiment of the seventh aspect of the present application includes a first battery pack 10 and a second battery pack 20, where the first battery pack 10 includes a first single battery 100; the second battery pack 20 includes a first single battery 100 and a second single battery 200, and the first single battery 100 and the second single battery 200 in the second battery pack 20 are sequentially stacked and connected in parallel; in the second battery pack 20, one negative electrode post 160 or one electrode post 120 is electrically connected to the first battery pack 10, and the adjacent cases 110 are in contact with each other.

For example, as shown in fig. 4, the battery module includes a first battery pack 10 and a second battery pack 20, the first battery pack 10 including one first unit battery 100; the second battery pack 20 includes a first single battery 100 and a second single battery 200, and the first single battery 100 and the second single battery 200 in the second battery pack 20 are sequentially stacked and connected in parallel; one negative pole column 160 or one pole column 120 in the second battery pack 20 is electrically connected to the first battery pack 10, all the housings 110 are connected to the positive pole column 150 of the second battery cell 200, but all the negative pole columns 160 or negative pole columns 120 are not connected to the housings 110 or any positive pole column 150 or positive pole column 120, no loop is formed between each housing 110 and two opposite pole columns 120 or between the positive pole column 150 and the negative pole column 160, and no short-circuit risk exists, so that an insulating film coated outside the housing 110 and a partition plate between adjacent housings 110 can be eliminated, and the adjacent housings 110 are in mutual contact, thereby improving the space utilization rate of the battery module, reducing the number of components and reducing the cost. Moreover, the direct contact between the adjacent 110 shells can also improve the heat transfer efficiency and help heat dissipation. In addition, the positive post 150 in the second unit cell 200 is connected to the conductive member 140, the conductive member 140 is connected to the housing 110, the housing 110 of the second unit cell 200 is positively charged, and the housing 110 of the first unit cell 100 is directly or indirectly in contact with the housing 110 of the second unit cell 200, so that the positive post is also positively charged, and the corrosion of the housing 110 in the using process can be reduced.

It is understood that the number of the first single batteries 100 and the second single batteries 200 in the second battery pack 20 is not limited, and one or more first single batteries 100 and one or more second single batteries 200 may be included, and may be set according to actual requirements.

The battery module provided by the embodiment of the eighth aspect of the present application includes a first battery pack 10 and a second battery pack 20, where the first battery pack 10 includes a plurality of first single batteries 100, and the plurality of first single batteries 100 are sequentially stacked and connected in series or in parallel; the second battery pack 20 includes a first single battery 100 and a second single battery 200, and the first single battery 100 and the second single battery 200 in the second battery pack 20 are sequentially stacked and connected in parallel; in the second battery pack 20, one negative electrode post 160 or one electrode post 120 is electrically connected to the first battery pack 10, and the adjacent cases 110 are in contact with each other.

For example, as shown in fig. 3, the battery module includes a first battery pack 10 and a second battery pack 20, the first battery pack 10 includes a plurality of first unit batteries 100, and the plurality of first unit batteries 100 are sequentially stacked and connected in series with each other; the second battery pack 20 includes a first single battery 100 and a second single battery 200, and the first single battery 100 and the second single battery 200 in the second battery pack 20 are sequentially stacked and connected in parallel; one of the poles 120 or one of the negative poles 160 in the second battery pack 20 is electrically connected to the first battery pack 10, all of the housings 110 are connected to the positive pole 150 of the second battery cell 200, but none of the negative poles 160 or the negative poles 120 is connected to any one of the housings 110 or any one of the positive poles 150 or the positive pole 120, and no short circuit risk is formed between each of the housings 110 and two opposite poles 120 or between the positive pole 150 and the negative pole 160, so that an insulating film covering the exterior of the housing 110 and a partition between adjacent housings 110 can be eliminated, and the adjacent housings 110 are in contact with each other, thereby improving the space utilization rate of the battery module, reducing the number of components, and reducing the cost. Moreover, the direct contact between the adjacent 110 shells can also improve the heat transfer efficiency and help heat dissipation. In addition, the positive post 150 in the second unit cell 200 is connected to the conductive member 140, the conductive member 140 is connected to the housing 110, the housing 110 of the second unit cell 200 is positively charged, and the housing 110 of the first unit cell 100 is directly or indirectly in contact with the housing 110 of the second unit cell 200, so that the positive post is also positively charged, and the corrosion of the housing 110 in the using process can be reduced.

It is understood that the number of the first single batteries 100 and the second single batteries 200 in the second battery pack 20 is not limited, and one or more first single batteries 100 and one or more second single batteries 200 may be included, and may be set according to actual requirements. The plurality of first unit batteries 100 in the first battery pack 10 may be connected in parallel with each other.

In any embodiment of the first to eighth aspects of the present invention, referring to fig. 1 to 5, two adjacent first single batteries 100, or two adjacent first single batteries 100 and second single batteries 200, or two adjacent second single batteries 200 may be connected by a bus bar 300, and the bus bar 300 may be welded to the post 120, so that the two adjacent first single batteries 100, or two adjacent first single batteries 100 and second single batteries 200, or two adjacent second single batteries 200 may be connected in series or in parallel, and may play a role in fixing, and a plurality of single batteries may be connected into a whole.

In any of the embodiments of the first aspect to the eighth aspect of the present application, referring to fig. 1 to 5, a housing 500 may be further provided, a plurality of first single batteries 100, a plurality of second single batteries 200, or a first battery pack 10 and a second battery pack 20 are accommodated in the housing 500, and the housing 500 may support and protect the plurality of first single batteries 100, the plurality of second single batteries 200, or the first single batteries 100 and the second single batteries 200, or the first battery pack 10 and the second battery pack 20 inside.

The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present application. Furthermore, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

Claims

1. Battery module, its characterized in that includes:

first battery cell is provided with a plurality ofly, first battery cell includes casing, two utmost point posts and two insulating parts, two utmost point posts one-to-one connect in two the insulating part, two the insulating part all connect in the casing, the insulating part is located utmost point post with so that between the casing utmost point post with it is insulating between the casing, a plurality of first battery cell piles up in proper order and establish ties each other or parallelly connected, and is adjacent the casing contacts each other.

2. The battery module according to claim 1, wherein the material of the insulating member is an insulating rubber.

3. Battery module, its characterized in that includes:

the second battery cell is provided with a plurality ofly, the second battery cell includes casing, anodal post, negative pole post, insulating part and electrically conductive piece, negative pole post connect in the insulating part, anodal post connect in electrically conductive piece, the insulating part reaches electrically conductive piece all connect in the casing, the insulating part is located between the negative pole post with so that between the casing the negative pole post with it is insulating between the casing, electrically conductive piece is located between the anodal post with so that between the casing the anodal post with electricity is connected between the casing, and is a plurality of the second battery cell piles up in proper order and connects in parallel each other, and is adjacent the casing contacts each other.

4. The battery module according to claim 3, wherein the conductive member is made of a conductive rubber, and the insulating member is made of an insulating rubber.

5. Battery module, its characterized in that includes:

the first single battery comprises a shell, two poles and two insulating pieces, wherein the two poles are connected to the two insulating pieces in a one-to-one correspondence manner, the two insulating pieces are both connected to the shell, and the insulating pieces are positioned between the poles and the shell so as to insulate the poles from the shell;

a second cell comprising said housing, a positive post, a negative post, said insulator and a conductive piece, said negative post being connected to said insulator, said positive post being connected to said conductive piece, said insulator and said conductive piece both being connected to said housing, said insulator being located between said negative post and said housing to insulate said negative post from said housing, said conductive piece being located between said positive post and said housing to electrically connect said positive post to said housing;

the first single battery and the second single battery are sequentially stacked and connected in parallel, or the second single battery passes through the negative pole column and the first single battery are connected in series, and the adjacent shells are in contact with each other.

6. Battery module, its characterized in that includes:

the first battery pack comprises a first single battery, and comprises a shell, two poles and two insulating pieces, wherein the two poles are connected to the two insulating pieces in a one-to-one correspondence manner, the two insulating pieces are both connected to the shell, and the insulating pieces are positioned between the poles and the shell so as to insulate the poles from the shell;

the second battery pack comprises a plurality of second single batteries, each second single battery comprises a shell, a positive pole column, a negative pole column, an insulating part and a conductive part, the negative pole column is connected to the insulating part, the positive pole column is connected to the conductive part, the insulating part and the conductive part are both connected to the shell, the insulating part is positioned between the negative pole column and the shell so as to insulate the negative pole column from the shell, the conductive part is positioned between the positive pole column and the shell so as to electrically connect the positive pole column and the shell, and the plurality of second single batteries are sequentially stacked and mutually connected in parallel;

wherein one of the negative electrode posts in the second battery pack is electrically connected to the first battery pack, and the adjacent cases are in contact with each other.

7. Battery module, its characterized in that includes:

the first battery pack comprises a plurality of first single batteries, each first single battery comprises a shell, two poles and two insulating pieces, the two poles are connected to the two insulating pieces in a one-to-one correspondence mode, the two insulating pieces are both connected to the shell, the insulating pieces are located between the poles and the shell so that the poles and the shell are insulated, and the plurality of first single batteries are sequentially stacked and connected in series or in parallel;

the second battery pack comprises a second single battery, the second single battery comprises the shell, a positive pole, a negative pole, the insulating part and a conductive part, the negative pole is connected with the insulating part, the positive pole is connected with the conductive part, the insulating part and the conductive part are both connected with the shell, the insulating part is positioned between the negative pole and the shell so as to insulate the negative pole from the shell, and the conductive part is positioned between the positive pole and the shell so as to electrically connect the positive pole and the shell;

the negative pole column in the second single battery is electrically connected with the first battery pack, and the adjacent shells are in contact with each other.

8. Battery module, its characterized in that includes:

9. Battery module, its characterized in that includes:

the first battery pack comprises a first single battery, the first single battery comprises a shell, two poles and two insulating parts, the two poles are connected to the two insulating parts in a one-to-one correspondence mode, the two insulating parts are both connected to the shell, and the insulating parts are located between the poles and the shell so as to enable the poles and the shell to be insulated;

a second battery pack including the first battery cell and a second battery cell, the second battery cell including the housing, a positive post, a negative post, the insulating member and a conductive member, the negative post being connected to the insulating member, the positive post being connected to the conductive member, the insulating member and the conductive member both being connected to the housing, the insulating member being located between the negative post and the housing to insulate the negative post from the housing, the conductive member being located between the positive post and the housing to electrically connect the positive post and the housing, the first battery cell and the second battery cell in the second battery pack being sequentially stacked and being connected in parallel with each other;

and one negative pole column or one pole column in the second battery pack is electrically connected with the first battery pack, and the adjacent shells are in mutual contact.

10. Battery module, its characterized in that includes:

the second battery pack comprises the first single battery and a second single battery, the second single battery comprises the shell, a positive pole post, a negative pole post, the insulating part and a conductive part, the negative pole post is connected with the insulating part, the positive pole post is connected with the conductive part, the insulating part and the conductive part are both connected with the shell, the insulating part is positioned between the negative pole post and the shell so as to insulate the negative pole post from the shell, the conductive part is positioned between the positive pole post and the shell so as to electrically connect the positive pole post and the shell, and the first single battery and the second single battery in the second battery pack are sequentially stacked and are mutually connected in parallel;