CN217589296U - Plastic support, battery module and battery pack - Google Patents

Abstract

The utility model belongs to the technical field of the battery, a plastic support, battery module and battery package are disclosed. The plastic support comprises a first support, a second support and a plurality of first connecting pieces. Wherein, be equipped with a plurality of first section of thick bamboo posts on the first support. A plurality of second cylinder columns are arranged on the second support, a plurality of first cylinder columns and a plurality of second cylinder columns are arranged in a one-to-one correspondence mode, and first connecting portions are arranged in the second cylinder columns. The first connecting piece is matched with the first connecting part for use. Above-mentioned plastic support, insulating barrier propterty is higher.

Description

Plastic support, battery module and battery pack

Technical Field

The utility model relates to a battery technology field especially relates to a plastic support, battery module and battery package.

Background

At present, in order to increase the energy density of the battery, a plurality of batteries are generally connected in series and in parallel to form a battery module with higher capacity and higher voltage so as to drive the electric automobile or other equipment to operate.

Traditional battery module adopts the plastic support to go on in groups more. Generally, a plurality of battery cells are fixed between the upper bracket and the lower bracket through the upper bracket and the lower bracket, and then the upper bracket and the lower bracket are connected through the long screw rod, so that the battery cells are fixed. These long screws both occupy the space of electric core, have reduced the volume energy density of battery module, probably lead to the short circuit with electric core or other conductive element contact in the use of battery module again, and the security performance is relatively poor.

Therefore, a plastic bracket is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

According to an aspect of the utility model provides a plastic support, insulating barrier propterty is higher.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a plastic support for fixed electric core includes:

the first support is provided with a plurality of first cylinder columns;

the second support is provided with a plurality of second cylinder columns, the first cylinder columns and the second cylinder columns are arranged in a one-to-one correspondence mode, and first connecting parts are arranged in the second cylinder columns;

and the first connecting pieces are matched with the first connecting parts for use.

Optionally, a plurality of battery cell fixing holes are formed in the second support, the battery cell is inserted into the battery cell fixing holes, and the second barrel column is arranged between the battery cell fixing holes.

Optionally, there are four second cylinder columns, and the four second cylinder columns are arranged in two rows and two columns.

Optionally, a first connecting unit is arranged on the side wall of the first support, and a second connecting unit is arranged on the side wall of the second support;

the first connecting unit comprises a first horizontal part, the second connecting unit comprises a second horizontal part, and the first horizontal part is connected with the second horizontal part.

Optionally, a first connecting hole is formed in the first horizontal portion, a second connecting hole is formed in the second horizontal portion, a second connecting portion is arranged in at least one of the first connecting hole and the second connecting hole, and the second connecting member is used in cooperation with the second connecting portion.

Optionally, a first arc surface is arranged on one side of the first connection unit, which is close to the battery cell, and the first arc surface is attached to the circumferential surface of the battery cell;

and or one side of the second connecting unit, which is close to the battery core, is provided with a second arc surface, and the second arc surface is attached to the circumferential surface of the battery core.

According to the utility model discloses a in another aspect, the utility model discloses still provide a battery module, make full use of the space between the electric core, improved the energy density of battery module, and the security performance is higher.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a battery module, includes foretell plastic support and a plurality of electric core, and is a plurality of electric core sets up first support with between the second support.

Optionally, the method further comprises:

the first connecting assembly comprises a plurality of first connecting strips, the plurality of first connecting strips are arranged on the outer surface of the first support, and one first connecting strip is electrically connected with the first electrodes of the plurality of battery cells;

and the second connecting assembly comprises a plurality of second connecting strips, the plurality of second connecting strips are arranged on the outer surface of the second support, and one second connecting strip is electrically connected with the plurality of second electrodes of the battery core.

Optionally, the first bracket further comprises a first insulating member and a second insulating member, the first insulating member is disposed on one side of the first connecting assembly away from the first bracket, and the second insulating clip is disposed on one side of the second connecting assembly away from the second bracket.

According to the utility model discloses a still another aspect, the utility model discloses still provide a battery package, including foretell battery module.

The utility model has the advantages that:

the utility model provides a plastic support, including first support, second support and a plurality of first connecting piece. Through set up a plurality of first section of thick bamboo posts on first support, set up a plurality of second section of thick bamboos relative with first section of thick bamboo post on the second support to set up first connecting portion in the second section of thick bamboo post, make first connecting piece and first connecting piece collocation use, can improve the fastening intensity between lower carriage and the first connecting piece, and then improve the joint strength between first support and the second support. Through setting up first connecting piece and wear to locate first section of thick bamboo post and second section of thick bamboo post, can avoid the first connecting piece of battery module in the in-process of using or carrying to contact and the short circuit with electric core or other conductive element, improved the insulating barrier propterty of above-mentioned plastic support.

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 structural diagram of a first bracket according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a second bracket provided by an embodiment of the present invention;

fig. 3 is an exploded view of a battery module according to an embodiment of the present invention;

fig. 4 is an assembly view of a battery module according to an embodiment of the present invention.

In the figure:

100. a first bracket; 110. a first cylinder; 120. a first connecting unit; 121. a first horizontal portion; 122. a first connection hole; 123. a first reinforcing rib; 200. a second bracket; 210. a second cylindrical column; 220. a first connection portion; 230. a battery cell fixing hole; 240. a second connection unit; 241. a second horizontal portion; 242. a second connection hole; 243. a second arc surface; 244. a second reinforcing rib; 250. a second connecting portion; 300. a first connecting member; 400. a bolt; 500. an electric core; 610. a first connecting bar; 710. a second connecting strip; 800. a first insulating member; 900. a second insulating member.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected", "connected" and "fixed" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of 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.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to be limiting.

The utility model provides a plastic support, insulating barrier propterty is higher.

Specifically, as shown in fig. 1 and 2, the plastic bracket includes a first bracket 100, a second bracket 200, and a plurality of first connectors 300. The first support 100 is provided with a plurality of first cylindrical columns 110, the second support 200 is provided with a plurality of second cylindrical columns 210 opposite to the first cylindrical columns 110, the second cylindrical columns 210 are internally provided with first connecting parts 220, and the first connecting parts 300 are matched with the first connecting parts 300 for use. In one embodiment, the first connector 300 can be threadably coupled to the first coupling portion 220, such as by threading the first connector 300 through the first barrel 110 to couple to the first coupling portion 220. Compared with the prior art in which an internal thread is provided in the second cylinder 210, on one hand, the connection strength between the first connecting piece 300 and the second cylinder 210 can be improved, and further, the connection strength between the first bracket 100 and the second bracket 200 can be improved; on the other hand, the stress on the second bracket 200 can be reduced, so that the second bracket 200 is protected from being damaged, and the service life of the second bracket 200 is prolonged. In another embodiment, the first connector 220 and the first connector 300 may be connected by a snap-fit connection. In other embodiments, the first connecting portion 220 and the first connecting member 300 can be connected by magnetic attraction, and the arrangement is determined according to actual needs. The plastic support is used for fixing the battery cell 500, and the first connecting member 300 is generally made of a metal material and has certain conductive performance, so that the first barrel column 110 and the second barrel column 210 are made of an insulating material, which can prevent the first connecting member 300 from being electrically connected with the battery cell 500 or other conductive elements to cause short circuit, and have high insulating and protecting performance.

Optionally, in this embodiment, the plastic bracket includes 2 brackets, that is, the first bracket 100 and the second bracket 200. In other embodiments, the plastic support may also include a plurality of supports, such as 3, 4, or 5 supports, which may be set according to actual situations.

Further, as shown in fig. 2, a plurality of cell fixing holes 230 are formed in the second bracket 200, and are used for fixing the cell 500, so that the cell 500 can be conveniently mounted. The shape of the cell fixing hole 230 is set according to the condition of the cell 500, in this embodiment, the cell 500 is cylindrical, and therefore, the cell fixing hole 230 is hollow cylindrical. In order to avoid the influence on the heat dissipation of the battery cell 500 caused by the over-tightness between the battery cell 500 and the battery cell 500, a certain gap may be formed between the battery cell fixing holes 230, so as to ensure that a certain gap is left between the battery cell 500 and the battery cell 500, and thus the battery cell can be cooled by natural air cooling or can be provided with a liquid cooling flow channel for cooling.

Optionally, in an embodiment, a plurality of cell fixing holes 230 may be grouped into a plurality of rows, and the cell fixing holes 230 of adjacent rows may be arranged oppositely. In other embodiments, the plurality of cell fixing holes 230 may form a plurality of rows, and the cell fixing holes 230 of adjacent rows may also be arranged in a staggered manner, according to actual needs.

Further, with reference to fig. 2, the second barrel 210 is disposed between the battery cell fixing holes 230, so that the second barrel 210 can be prevented from occupying the installation space of the battery cell 500, and the plastic bracket and the battery module using the plastic bracket are improved in compactness.

Specifically, in the present embodiment, four second cylinders 210 are provided on the second carriage 200, and correspondingly, four first cylinders 110 are provided on the first carriage 100. And four cylinder posts are arranged in two rows and two columns, so that the stress uniformity of the second support 200 is improved, the stress uniformity of the battery cell 500 fixed between the first support 100 and the second support 200 is further improved, and the protection of the battery cell 500 is facilitated. Of course, in other embodiments, the number and the manner of disposing the second cylinder 210 may be other, and may be selected according to actual needs.

Further, with continued reference to fig. 1 and 2, the first bracket 100 is provided with a first connection unit 120 on a sidewall thereof, and the second bracket 200 is provided with a second connection unit 240 on a sidewall thereof. The first connecting unit 120 includes a first horizontal portion 121, the second connecting unit 240 includes a second horizontal portion 241, and the first horizontal portion 121 is connected to the second horizontal portion 241. By arranging the first connecting unit 120 and the second connecting unit 240, the connection strength between the first support 100 and the second support 200 can be improved, and the reliability of the plastic support for fixing the battery cell 500 can be further improved.

Preferably, a first connection hole 122 is provided on the first horizontal portion 121, and a second connection hole 242 is provided on the second horizontal portion 241. The second connection portion 250 may be disposed in the first connection hole 122, and the second connection member 400 is used in cooperation with the second connection portion 250. In one embodiment, the second connection member 400 and the second connection portion 250 may be connected by a bolt connection, and in particular, the second connection member 400 is threaded through the second connection hole 242 and connected with the second connection portion 250, so as to connect the first connection unit 120 and the second connection unit 240. By providing the second connection part 250 in the first connection hole 122, the connection strength between the first connection unit 120 and the second connection unit 240 can be improved compared to providing an internal thread in the first connection hole 122; on the other hand, the stress on the first connection hole 122 or the second connection hole 242 can be reduced, which is beneficial to protecting the first connection hole 122 and the second connection hole 242, and further prolongs the service life of the first bracket 100 and the second bracket 200. In another embodiment, the second connector 400 and the second connector 250 may be connected by a snap-fit connection. In other embodiments, the second connector 400 and the second connecting portion can be connected by magnetic attraction, which is selected according to practical situations. Of course, the second connection portion 250 may be inserted into the second connection hole 242.

Preferably, the first connection hole 122 may protrude from the first horizontal portion 121, and the second connection hole 242 may protrude from the second horizontal portion 241, on one hand, the strength of the first connection hole 122 and the second connection hole 242 may be improved; on the other hand, the contact areas of the first and second connection holes 122 and 242 and the second connection member 400 can be increased, thereby increasing the connection strength of the first and second connection units 120 and 240.

Further, can set up first strengthening rib 123 between first connecting hole 122 and first horizontal part 121, be favorable to improving the intensity and the rigidity of first connecting hole 122, prolong the life of first connecting hole 122, first strengthening rib 123 can set up a plurality ofly, and the circumference interval that first connecting hole 122 can be followed to a plurality of first strengthening ribs 123 sets up. Similarly, a plurality of second reinforcing ribs 244 may be disposed between the second connecting hole 242 and the second horizontal portion 241, which is beneficial to improving the strength and rigidity of the second connecting hole 242 and prolonging the service life of the second connecting hole 242, and the plurality of second reinforcing ribs 244 may be disposed at intervals along the circumferential direction of the second connecting hole 242.

Alternatively, the first connecting unit 120 may be provided in plurality, and the plurality of first connecting units 120 may be spaced apart in the length direction or the width direction of the sidewall of the first bracket 100. Similarly, the second connecting unit 240 may be provided in plurality, and a plurality of second connecting units 240 may be provided at intervals along the length direction or the width direction of the sidewall of the second bracket 200. And the first connection units 120 and the second connection units 240 are disposed in one-to-one correspondence.

Specifically, in the present embodiment, four first connection units 120 and four second connection units 240 are provided. The four first connecting units 120 are disposed on two opposite sidewalls of the first bracket 100, and two first connecting units 120 are disposed on each sidewall. Four second connection units 240 are disposed on two opposite sidewalls of the second bracket 200, and two second connection units 240 are disposed on each sidewall. Of course, in other embodiments, the number and arrangement of the first connection unit 120 and the second connection unit 240 may be other, and may be selected according to actual needs.

Preferably, in order to improve the structural compactness of the plastic bracket, the side wall of the first bracket 100 is disposed in the same plane as the outer edge of the first connecting unit 120 disposed on the side wall. Likewise, the sidewall where the second bracket 200 is disposed is in the same plane as the outer edge of the second connection unit 240 disposed thereon.

Preferably, with continued reference to fig. 2, since the first connection unit 120 and the second connection unit 240 are located between the first support 100 and the second support 200, in order to avoid the first connection unit 120 and the second connection unit 240 affecting the installation of the battery cell 500, a first circular arc surface is disposed on one side of the first connection unit 120 close to the battery cell 500, and the first circular arc surface is attached to the circumferential surface of the battery cell 500. A second arc surface 243 is disposed on one side of the second connection unit 240 close to the battery cell 500, and the second arc surface 243 is attached to the circumferential surface of the battery cell 500. Of course, the first arc surface may be disposed only on one side of the first connection unit 120 close to the battery cell 500 and attached to the circumferential surface of the battery cell 500, or the second arc surface 243 may be disposed only on one side of the second connection unit 240 close to the battery cell 500 and attached to the circumferential surface of the battery cell 500. The method can be set according to actual needs.

Further, in the present embodiment, the second connection unit 240 is disposed in the middle of the adjacent cell fixing holes 230, and therefore, two second arc surfaces 243 are symmetrically disposed on one side of the second connection unit 240 close to the cell 500, with the axis of the second connection unit 240 as a center. Of course, in other embodiments, the arrangement position of the second connection unit 240 and the arrangement manner of the second arc surface 243 may also be other, and the arrangement manner of the second connection unit 240 and the installation number of the battery cells 500 are all within the protection scope of the present application as long as the arrangement does not affect the installation position of the battery cells 500.

Preferably, the first bracket 100 and the second bracket 200 may be integrally formed by injection molding, the first connecting portion 220 may be disposed in the second cylinder 210 by injection molding, and the second connecting portion 250 may be disposed in the first connecting hole 122 or the second connecting hole 242 by injection molding. The injection molding mode is simple to process, low in cost and suitable for mass production.

The utility model also provides a battery module, make full use of the space between electric core 500, improved the energy density of battery module, and the security performance is higher.

Specifically, as shown in fig. 3 and 4, the battery module includes the above-mentioned plastic bracket and a plurality of battery cells 500, and the battery cells 500 are fixed between the first bracket 100 and the second bracket 200.

In this embodiment, when the battery cell 500 is mounted, the battery cell 500 may be fixed in the cell fixing hole 230 of the second support 200, then the first support 100 is covered on the other end of the battery cell 500, and finally the first support 100 and the second support 200 are connected by the first connecting member 300 and the second connecting member 400, so as to fix the battery cell 500 between the first support 100 and the second support 200.

Further, above-mentioned battery module still includes first coupling assembling and second coupling assembling. The first connecting assembly includes a plurality of first connecting strips 610, and one first connecting strip 610 is electrically connected to the first electrodes of the plurality of battery cells 500, where the first electrode may be a positive electrode or a negative electrode. The second connecting assembly includes a plurality of second connecting strips 710, and one second connecting strip 710 is electrically connected to the second electrodes of the plurality of battery cells 500, and the second electrode may be a positive electrode or a negative electrode, and when the first electrode is the positive electrode, the second electrode is the negative electrode. When the first electrode is a negative electrode, the second electrode is a positive electrode. Through setting up first coupling assembling and second coupling assembling, can realize the series-parallel connection of a plurality of electric cores 500 in above-mentioned battery module.

Preferably, the battery module further includes a first insulating member 800 and a second insulating member 900, the first insulating member 800 is disposed on one side of the first connecting assembly away from the first support 100, and the second insulating member 900 is disposed on one side of the second connecting assembly away from the second support 200, so as to insulate the first connecting assembly and the second connecting assembly from the outside, thereby improving the insulating protection performance of the battery module, further reducing the short-circuit risk of the battery module, and improving the safety performance of the battery module.

The utility model also provides a battery package, including foretell battery module.

It is to be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides a plastic support for fixed electric core (500), its characterized in that includes:

the device comprises a first support (100), wherein a plurality of first cylindrical columns (110) are arranged on the first support (100);

the second support (200) is provided with a plurality of second cylindrical columns (210), the first cylindrical columns (110) and the second cylindrical columns (210) are arranged in a one-to-one correspondence manner, and first connecting parts (220) are arranged in the second cylindrical columns (210);

a plurality of first connectors (300), the first connectors (300) are matched with the first connecting parts (220) for use.

2. The plastic support of claim 1, wherein the second support (200) has a plurality of cell fixing holes (230), the cell (500) is inserted into the cell fixing holes (230), and the second barrel column (210) is disposed between the cell fixing holes (230).

3. The plastic support according to claim 1, wherein there are four second columns (210), and the four second columns (210) are arranged in two rows and two columns.

4. The plastic support according to any one of claims 1-3, wherein a first connecting unit (120) is disposed on a sidewall of the first support (100), and a second connecting unit (240) is disposed on a sidewall of the second support (200);

the first connecting unit (120) includes a first horizontal portion (121), the second connecting unit (240) includes a second horizontal portion (241), and the first horizontal portion (121) is connected to the second horizontal portion (241).

5. The plastic support according to claim 4, wherein the first horizontal portion (121) is provided with a first connection hole (122), the second horizontal portion (241) is provided with a second connection hole (242), at least one of the first connection hole (122) and the second connection hole (242) is provided with a second connection portion (250), and the second connection member (400) is used in cooperation with the second connection portion (250).

6. The plastic support according to claim 4, wherein a first arc surface is arranged on one side of the first connection unit (120) close to the battery cell (500), and the first arc surface is attached to the circumferential surface of the battery cell (500);

and/or a second arc surface (243) is arranged on one side, close to the battery cell (500), of the second connection unit (240), and the second arc surface (243) is attached to the circumferential surface of the battery cell (500).

7. A battery module, characterized by comprising the plastic support according to any one of claims 1 to 6 and a plurality of cells (500), wherein the plurality of cells (500) is disposed between the first support (100) and the second support (200).

8. The battery module according to claim 7, further comprising:

a first connecting assembly, which comprises a plurality of first connecting strips (610), wherein a plurality of the first connecting strips (610) are arranged on the outer surface of the first bracket (100), and one first connecting strip (610) is electrically connected with the first electrodes of a plurality of the battery cells (500);

and the second connecting assembly comprises a plurality of second connecting strips (710), the plurality of second connecting strips (710) are arranged on the outer surface of the second support (200), and one second connecting strip (710) is electrically connected with the second electrodes of the battery cores (500).

9. The battery module according to claim 8, further comprising a first insulator (800) and a second insulator (900), the first insulator (800) being disposed on a side of the first connecting member away from the first bracket (100), and the second insulator (900) being disposed on a side of the second connecting member away from the second bracket (200).

10. A battery pack, comprising the battery module according to any one of claims 7 to 9.

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