CN215299370U - Sealed battery and battery module - Google Patents

Abstract

The utility model relates to a battery technology field discloses a sealed battery and battery module. Wherein the sealed battery includes: a housing defining therein a receiving chamber open at least at one end; the partition plate is arranged in the accommodating cavity to divide the accommodating cavity into at least two cavities; the at least two pole cores are arranged in one-to-one correspondence with the at least two cavities, and each pole core is placed in one cavity filled with electrolyte; the cover plate is respectively connected with the shell and the partition plate in a sealing mode so that the at least two cavities are not communicated with each other, at least one pole column group is arranged on the cover plate, and each pole column group is electrically connected with the pole lug group of at least one pole core. The utility model discloses a sealed battery is capacious, because each other does not communicate between the cavity for can adopt parallel connection or series connection between the utmost point core in the cavity, the connected mode is more nimble, makes a sealed battery can satisfy the user to the demand of different capacity, has improved user's use satisfaction.

Description

Sealed battery and battery module

Technical Field

The utility model relates to a battery technology field especially relates to a sealed battery and battery module.

Background

The matrix arrangement mode is adopted mostly to current large capacity battery for this large capacity battery has the heat dissipation good, long cycle life, characteristics such as fail safe nature is good, however, along with the inside increase that is used for placing the cavity number of utmost point core of large capacity battery, because intercommunication each other between the cavity makes can only connect in parallel and unable series connection between a plurality of utmost point cores of large capacity battery, makes the voltage of large capacity battery comparatively single, has restricted the flexibility of this large capacity battery when the cluster is parallelly connected.

SUMMERY OF THE UTILITY MODEL

Based on above, an object of the utility model is to provide a sealed battery and battery module, can realize the series connection between the utmost point core of sealed battery or parallelly connected, the connected mode is more nimble.

In order to achieve the purpose, the utility model adopts the following technical proposal:

a sealed battery comprising: a housing defining therein a receiving chamber open at least at one end; the partition plate is arranged in the accommodating cavity to divide the accommodating cavity into at least two cavities; the at least two pole cores are arranged in one-to-one correspondence with the at least two cavities, and each pole core is placed in one cavity filled with electrolyte; the cover plate is respectively connected with the shell and the partition plate in a sealing mode, so that the cavities are not communicated with each other, at least one pole column group is arranged on the cover plate, and each pole column group is electrically connected with at least one pole lug group of the pole core.

As a preferable scheme of the sealed battery, a connecting groove corresponding to the partition plate is arranged on the cover plate, and the partition plate extends into the connecting groove and is connected with the cover plate in a welding manner.

As a preferable scheme of the sealed battery, the number of the pole column groups is at least two, and at least two pole column groups are arranged in one-to-one correspondence with the pole lug groups of at least two pole cores.

As a preferred scheme of the sealed battery, one end of the shell is opened, the pole lug group is arranged on the same side of the pole core, the cover plate comprises at least two sub cover plates, each sub cover plate is provided with one pole column group, and at least two sub cover plates are arranged in a split mode or in an integrated mode.

As a sealed battery's preferred scheme, the open setting in both ends of the relative setting of casing, the apron includes first end plate and second end plate, first end plate cover is established the one end that holds the chamber, second end plate cover is established the other end that holds the chamber, every the utmost point post group all includes two utmost point posts, every one of utmost point post group utmost point post setting is in on the first end plate, another utmost point post setting is in on the second end plate.

As a preferable scheme of the sealed battery, the first end plate includes a plurality of first sub-end plates, the second end plate includes a plurality of second sub-end plates, the first sub-end plate and the second sub-end plate corresponding to one of the pole cores are respectively provided with the pole posts with opposite polarities, each of the first sub-end plates is arranged corresponding to at least one of the pole cores, and each of the second sub-end plates is arranged corresponding to at least one of the pole cores.

A battery module comprises the sealed battery in any scheme, at least one sealed battery comprises a plurality of pole cores which are arranged in rows and columns, the pole cores are divided into a plurality of pole core groups which are connected in series, and each pole core group comprises at least two pole cores which are connected in series or in parallel.

As a preferred scheme of the battery module, at least two pole column groups arranged in rows and columns are arranged on the cover plate, the at least two pole column groups and the at least two pole lug groups of the pole cores are arranged in a one-to-one correspondence manner, the poles with the same polarity of each column of the pole column groups are mutually and electrically connected so that the pole cores in each column are connected in parallel and form the pole core group, and the poles with different polarities of two adjacent pole column groups in each row are electrically connected so that the pole core groups are connected in series.

As a preferable scheme of the battery module, the number of the sealed batteries is several, at least two of the pole cores of each sealed battery are arranged in a row, the pole posts of the pole lug groups of at least two of the pole cores with the same polarity are positioned on the same side, at least two of the pole cores of each sealed battery are connected in parallel, and several sealed batteries are connected in series.

As a preferred scheme of battery module, be equipped with two at least ranks on the apron and arrange the utmost point post group, two at least the utmost point post group sets up with two at least the utmost point ear group one-to-one of utmost point core, two at least the utmost point post group is connected in series.

The utility model has the advantages that: the utility model discloses a sealed battery is capacious, because each other does not communicate between the cavity for can adopt parallel connection or series connection between the utmost point core in the cavity, the connected mode is more nimble, makes a sealed battery can satisfy the user to the demand of different capacity, has improved user's use satisfaction.

The utility model discloses a can connect in parallel or establish ties between the utmost point core that a plurality of ranks of at least one sealed battery of battery module were arranged for this battery module's connected mode is more nimble.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a schematic view of a case, a separator, etc. of a sealed battery according to an embodiment of the present invention;

fig. 2 is a back view of the structure of the first end plate, the bottom plate, the pole set, etc. of the sealed battery according to the embodiment of the present invention;

fig. 3 is a front view of a first end plate, a bottom plate, a pole group, etc. of a sealed battery according to an embodiment of the present invention;

fig. 4 is a back view of the first end plate, the bottom plate, the pole group, etc. of the sealed battery according to the first embodiment of the present invention;

fig. 5 is a front view of a first end plate, a bottom plate, a pole group, etc. of a sealed battery according to a first embodiment of the present invention;

fig. 6 is a side view of one end of a sealed battery according to a second alternative embodiment of the present invention;

fig. 7 is a side view of the other end of a sealed battery according to a second alternative embodiment of the present invention;

fig. 8 is a side view of one end of a sealed battery according to a third alternative embodiment of the present invention;

fig. 9 is a side view of the other end of a sealed battery according to a third alternative embodiment of the present invention;

fig. 10 is a side view of one end of a sealed battery according to a fourth alternative embodiment of the present invention;

fig. 11 is a side view of the other end of a sealed battery according to a fourth alternative embodiment of the present invention;

fig. 12 is a side view of one end of a sealed battery according to a fifth alternative embodiment of the present invention;

fig. 13 is a side view of the other end of the sealed battery according to the fifth alternative embodiment of the present invention;

fig. 14 is a side view of one end of a sealed battery according to a sixth alternative embodiment of the present invention;

fig. 15 is a side view of the other end of a sealed battery according to a sixth alternative embodiment of the present invention;

fig. 16 is a side view of one end of a battery module and a connection manner between poles according to an embodiment of the present invention;

fig. 17 is a side view of the other end of the battery module and a connection manner between the poles according to an embodiment of the present invention.

In the figure:

1. a housing; 10. a cavity;

2. a partition plate;

30. a liquid injection hole; 31. a first end plate; 311. a first sub-endplate; 32. a second end plate; 321. a second sub-endplate;

41. a positive pole column; 42. a negative electrode post;

5. a base plate.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment provides a sealed battery, as shown in fig. 1 to 3, this sealed battery includes casing 1, baffle 2, two at least pole cores and apron, inject the open chamber that holds of at least one end in the casing 1, baffle 2 sets up and is holding the intracavity in order to split into two at least cavitys 10 with holding the chamber, two at least pole cores and two at least cavitys 10 one-to-one setting, every pole core all places in one cavity 10 that is equipped with electrolyte, the apron respectively with casing 1 and baffle 2 sealing connection, so that two at least cavitys 10 do not communicate each other, be equipped with at least one pole group on the apron, every pole group all is connected with the pole ear group electricity of at least one pole core.

Specifically, the accommodating cavity of the present embodiment is divided into two cavities 10 by the partition plate 2, and each cavity 10 is provided with one pole core, that is, the number of the pole cores of the sealed battery is two. The number of the pole group of this embodiment is two, and two pole groups set up with the pole ear group one-to-one of two pole cores, and the pole ear group of every pole core all is connected with corresponding utmost point post group electricity through bottom plate 5. In some embodiments, as shown in fig. 4 and 5, the number of the pole set may be one, and each pole core of each sealed battery is electrically connected with the pole set; or the number of the pole column groups is less than that of the pole cores, wherein at least one pole column group is electrically connected with the pole lug groups of at least two pole cores, and the pole lug group of each pole core is only electrically connected with one pole column group.

In some embodiments, the accommodating cavity is divided into at least three cavities 10, if the number of the pole group on the cover plate is at least three, the at least three pole groups are arranged in one-to-one correspondence with the pole ear groups of the at least three pole cores, or the number of the pole group on the cover plate is less than that of the pole cores, at least one pole group is simultaneously electrically connected with the pole ear groups of the at least two pole cores; in some embodiments, if the number of the pole cores is two, a pole group may be further disposed on the cover plate, and the pole lug group of each pole core is electrically connected to the pole group through the bottom plate 5.

The sealed battery provided by the embodiment has large capacity, and the cavity bodies 10 are not communicated with each other, so that the pole cores in the cavity bodies 10 can be connected in parallel or in series, the connection mode is more flexible, one sealed battery can meet the requirements of users on different capacities, and the use satisfaction of the users is improved.

The cover plate of this embodiment is provided with a connecting groove (not shown in the figure) corresponding to the partition plate 2, and the partition plate 2 extends into the connecting groove and is connected with the cover plate in a welding manner. In order to facilitate the injection of the electrolyte into the cavity 10, as shown in fig. 2 and 3, the cover of the present embodiment is provided with two injection holes 30, and the two injection holes 30 are respectively disposed opposite to the two cavities 10.

Specifically, the utmost point ear group of this embodiment includes two utmost points ears, and two utmost points ears are anodal utmost point ear and negative pole utmost point ear respectively, and anodal utmost point ear and negative pole utmost point ear are located the both ends of utmost point core respectively, and utmost point post group includes two utmost point posts, and two utmost point posts are anodal utmost point post 41 and negative pole utmost point post 42 respectively, and anodal utmost point post 41 can be connected with anodal utmost point ear electricity, and negative pole utmost point post 42 can be connected with negative pole utmost point ear electricity.

Further, the both ends of the relative setting of casing 1 of this embodiment open the setting, and the apron includes first end plate 31 and second end plate 32, and first end plate 31 covers the one end of establishing in holding the chamber, and second end plate 32 covers the other end of establishing in holding the chamber, and every post group all includes anodal utmost point post 41 and negative pole post 42, and the anodal utmost point post 41 of every post group all sets up on first end plate 31, and negative pole post 42 all sets up on second end plate 32. Specifically, the first end plate 31 is provided with two positive electrode posts 41, each positive electrode post 41 corresponds to a positive electrode tab of one electrode core, the second end plate 32 is provided with two negative electrode posts 42, and each negative electrode post 42 corresponds to a negative electrode tab of one electrode core.

In some embodiments, the first end plate 31 may be provided with a positive electrode post 41 and a negative electrode post 42 at the same time, and the second end plate 32 is provided with a positive electrode post 41 and a negative electrode post 42 at the same time, but it is to be ensured that a positive electrode tab of one electrode core corresponds to one positive electrode post 41, and a negative electrode tab of one electrode core corresponds to one negative electrode post 42, specifically according to actual requirements; in some embodiments, it may also be that the first end plate 31 includes a plurality of first sub-end plates 311, the second end plate 32 includes a plurality of second sub-end plates 321, each pole core is respectively disposed corresponding to one first sub-end plate 311 and one second sub-end plate 321, one of the first sub-end plate 311 and the second sub-end plate 321 corresponding to one pole core is provided with a positive pole post 41, and the other is provided with a negative pole post 42; in some embodiments, a plurality of first sub-end plates 311 may be integrally formed into the first end plate 31, the number of poles of the pole group on the first end plate 31 may be the same as or less than the number of pole cores, one pole tab of the pole tab group of each pole core is electrically connected to one pole tab, or the number of the first sub-end plates 311 included in the first end plate 31 is less than the number of pole cores, where at least one first sub-end plate 311 is disposed corresponding to at least two pole cores, at least one pole tab is disposed on the first sub-end plate 311, each pole tab is electrically connected to one pole tab of the pole tab group of at least one pole core, the remaining first sub-end plates 311 are disposed corresponding to one pole core, and each first sub-end plate 311 is disposed with one pole tab of the pole tab group of the pole core; in some embodiments, the second end plate 32 includes a number of second sub-end plates 321 less than the number of the pole cores, wherein at least one second sub-end plate 321 is disposed corresponding to at least two pole cores, at least one pole post is disposed on the second sub-end plate 321, each pole post is electrically connected to one tab of the same polarity of the group of pole lugs of at least one pole core, and each of the remaining second sub-end plates 321 is disposed corresponding to one pole core.

Specifically, in other embodiments, the accommodating cavity is divided into four cavities 10 by the partition board 2, and each cavity 10 is used for accommodating one pole core, as shown in fig. 6, the first end plate 31 includes four first sub-end plates 311, each first sub-end plate 311 is provided with one negative pole post 42, as shown in fig. 7, the second end plate 32 includes four second sub-end plates 321, and each second sub-end plate 321 is provided with one positive pole post 41.

In other embodiments, the accommodating cavity is divided into four cavities 10 by the partition board 2, and each cavity 10 is used for accommodating one electrode core, as shown in fig. 8, the first end plate 31 includes four first sub-end plates 311, two of the first sub-end plates 311 are respectively provided with one anode post 42, the other two first sub-end plates 311 are respectively provided with one anode post 41, as shown in fig. 9, the second end plate 32 includes four second sub-end plates 321, two of the second sub-end plates 321 are respectively provided with one anode post 41, the other two second sub-end plates 321 are respectively provided with one anode post 42, and each electrode core is electrically connected to one anode post 41 and one cathode post 42.

In other embodiments, the accommodating cavity is divided into four cavities 10 by the partition board 2, and each cavity 10 is used for accommodating one electrode core, as shown in fig. 10, the first end plate 31 includes four first sub-end plates 311, each first sub-end plate 311 is provided with one negative electrode post 42, the negative electrode tab of each electrode core is electrically connected to one negative electrode post 42, as shown in fig. 11, the second end plate 32 is a whole, the second end plate 32 is provided with two positive electrode posts 41, and each positive electrode post 41 is electrically connected to the positive electrode tabs of two electrode cores respectively.

In other embodiments, the accommodating cavity is divided into four cavities 10 by the partition board 2, and each cavity 10 is used for accommodating one electrode core, as shown in fig. 12, the first end plate 31 includes four first sub-end plates 311, each first sub-end plate 311 is provided with one negative electrode post 42, the negative electrode tab of each electrode core is electrically connected to one negative electrode post 42, as shown in fig. 13, the second end plate 32 includes three second sub-end plates 321, one of the second sub-end plates 321 is provided with two positive electrode posts 41, each of the remaining second sub-end plates 321 is provided with one positive electrode post 41, and each positive electrode post 41 is electrically connected to the positive electrode tab of one electrode core.

In other embodiments, the accommodating cavity is divided into four cavities 10 by the partition board 2, and each cavity 10 is used for accommodating one electrode core, as shown in fig. 14, the first end plate 31 includes three first sub-end plates 311, one of the first sub-end plates 311 is provided with two negative electrode posts 42, each of the other first sub-end plates 311 is provided with one negative electrode post 42, and a negative electrode tab of each electrode core is electrically connected to one negative electrode post 42, as shown in fig. 15, the second end plate 32 includes three second sub-end plates 321, one of the second sub-end plates 321 is provided with two positive electrode posts 41, each of the other second sub-end plates 321 is provided with one positive electrode post 41, and each positive electrode post 41 is electrically connected to a positive electrode tab of one electrode core.

In some embodiments, it may also be that one end of the housing 1 is open, the pole ear group is disposed on the same side of the pole core, the cover plate includes at least two sub cover plates, each sub cover plate is provided with a pole column group, and at least two sub cover plates are disposed in a split manner or in an integrated manner.

The present embodiment further provides a battery module, which includes the sealed battery of the present embodiment, at least one sealed battery includes a plurality of pole cores arranged in rows and columns, the plurality of pole cores are divided into a plurality of pole core groups connected in series, and each pole core group includes at least two pole cores connected in series or in parallel.

The pole cores of the at least one sealed battery of the battery module provided by the embodiment in the row and column arrangement can be connected in parallel or in series, so that the connection mode of the battery module is more flexible.

In this embodiment, the number of the sealed batteries is four, each sealed battery includes two pole cores, eight pole cores of the four sealed batteries are connected in series, the tabs of the two pole cores of each sealed battery with different polarities are respectively located on the same side, the polarities of the tabs in the same row of the two adjacent sealed batteries are different, the distribution manner of the poles on the first end plate 31 and the distribution manner of the poles on the second end plate 32 are as shown in fig. 16 and 17, and the block diagram in the figure shows the connection manner between the pole groups corresponding to the pole cores. In other embodiments, the number of the sealed batteries is not limited to the limitation of the embodiment, and the number of the pole cores of each sealed battery is also not limited to the limitation of the embodiment, all the pole cores of all the sealed batteries are connected in series, and since the pole post groups on the cover plate and the pole lug groups on the pole cores are arranged in one-to-one correspondence, all the pole posts of all the pole post groups are connected in series if all the pole cores are connected in series.

In some embodiments, the number of the sealed batteries is four, each sealed battery comprises two pole cores, the two pole cores of each sealed battery are arranged in a row, the pole posts with the same polarity of the pole lug groups of the two pole cores of each sealed battery are positioned on the same side, the two pole cores of each sealed battery are connected in parallel, and the four sealed batteries are connected in series. In other embodiments, the number of the sealed batteries is not limited to the limitation of the present embodiment, and the number of the pole cores of each sealed battery is also not limited to the limitation of the present embodiment, the plurality of pole cores of each sealed battery are arranged in a row, the pole posts of the same polarity of the pole lug groups of the plurality of pole cores of each sealed battery are located on the same side, the plurality of pole cores of each sealed battery are connected in parallel, and all the sealed batteries are connected in series.

In some embodiments, at least two pole groups arranged in rows and columns are arranged on the cover plate, the at least two pole groups are arranged in one-to-one correspondence with the pole lug groups of the at least two pole cores, the poles with the same polarity of each pole group are electrically connected with each other so that each pole core is connected in parallel and forms a pole core group, and the poles with different polarities of two adjacent pole groups in each row are electrically connected so that the pole core groups are connected in series.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (10)

1. A sealed battery, comprising:

a housing (1) defining therein a receiving chamber open at least at one end;

a partition plate (2) arranged in the accommodating cavity to divide the accommodating cavity into at least two cavities (10);

the at least two pole cores are arranged in one-to-one correspondence with the at least two cavities (10), and each pole core is placed in one cavity (10) filled with electrolyte;

the cover plate is respectively connected with the shell (1) and the partition plate (2) in a sealing mode, so that at least two cavities (10) are not communicated with each other, at least one pole column group is arranged on the cover plate, and each pole column group is electrically connected with at least one pole lug group of the pole core.

2. Sealed battery according to claim 1, characterised in that the cover plate is provided with attachment grooves corresponding to the separator plates (2), into which attachment grooves the separator plates (2) project and are welded to the cover plate.

3. The sealed battery according to claim 1, wherein the number of the pole column groups is at least two, and at least two pole column groups are arranged in one-to-one correspondence with at least two pole lug groups of the pole core.

4. Sealed battery according to claim 3, characterised in that the housing (1) is open at one end, the pole lug groups are arranged on the same side of the pole core, the cover plate comprises at least two sub-cover plates, each sub-cover plate is provided with one pole post group, and at least two sub-cover plates are arranged in a split manner or in an integrated manner.

5. Sealed battery according to claim 3, characterised in that the oppositely arranged two ends of the casing (1) are open, the cover plate comprises a first end plate (31) and a second end plate (32), the first end plate (31) is housed at one end of the receiving chamber, the second end plate (32) is housed at the other end of the receiving chamber, each of the pole groups comprises two poles, one of the poles of each of the pole groups is arranged on the first end plate (31), and the other pole is arranged on the second end plate (32).

6. The sealed battery according to claim 5, wherein the first end plate (31) comprises a plurality of first sub-end plates (311), the second end plate (32) comprises a plurality of second sub-end plates (321), the first sub-end plate (311) and the second sub-end plate (321) corresponding to one of the pole cores are respectively provided with the poles with opposite polarities, each first sub-end plate (311) is arranged corresponding to at least one of the pole cores, and each second sub-end plate (321) is arranged corresponding to at least one of the pole cores.

7. A battery module comprising at least one sealed battery according to any one of claims 1 to 6, wherein at least one sealed battery comprises a plurality of said pole cores arranged in rows and columns, the plurality of said pole cores are divided into a plurality of pole core groups connected in series, and each of said pole core groups comprises at least two said pole cores connected in series or in parallel.

8. The battery module according to claim 7, wherein the cover plate is provided with at least two pole groups arranged in rows and columns, at least two pole groups are arranged in one-to-one correspondence with the pole lug groups of at least two pole cores, poles with the same polarity in each column of the pole group are electrically connected with each other so that the pole cores in each column are connected in parallel and form the pole core group, and poles with different polarities in two adjacent pole groups in each row are electrically connected so that the pole core groups are connected in series.

9. The battery module according to claim 8, wherein the number of the sealed batteries is several, at least two of the pole pieces of each of the sealed batteries are arranged in a row, the pole posts of the same polarity of the pole ear groups of at least two of the pole pieces are located on the same side, at least two of the pole pieces of each of the sealed batteries are connected in parallel, and a plurality of the sealed batteries are connected in series.

10. The battery module according to claim 7, wherein the cover plate is provided with at least two pole groups arranged in rows and columns, at least two pole groups are arranged in one-to-one correspondence with at least two pole lug groups of the pole core, and at least two pole groups are connected in series.

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