Battery module

Abstract

The utility model relates to a battery module. The battery module comprises a battery pack, a pole connecting piece, an end plate, an insulating partition plate and an output pole piece, the battery pack is provided with two rows of battery cell groups, the two rows of battery cell groups are adjacently arranged, each row of battery cell groups is provided with a plurality of battery cells which are arranged side by side, the anode of the front battery cell is adjacent to the cathode of the rear battery cell, and the anode of the left battery cell is adjacent to the cathode of the right battery cell; the battery cells in each row are electrically connected through the pole connecting sheets, and the two rows of battery cells are electrically connected through the pole connecting sheets; the end plates are respectively arranged at two ends of the battery pack; the insulating partition plates are arranged between two adjacent battery cells and between the battery cells and the end plates; and the battery pack is electrically connected with an external component through the output pole piece. According to the utility model, the welding workload is effectively reduced, the welding time is shortened, the production efficiency is improved, the use amount of auxiliary materials can be effectively reduced, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to energy storage battery technical field especially relates to a battery module. BACKGROUND

[0002] New energy is paid more and more attention and concern, and lithium battery in new energy as a more important one, is more and more applied in various industries. The structure of battery module in lithium battery is mostly formed by parallel or series connection of multiple single cells.

[0003] Chinese patent CN218827672U discloses a battery module, which is spliced by combining a row of cells with front and rear end plates. In actual application, multiple battery modules are electrically connected to form a whole power supply battery according to actual needs. Since the battery module can store a small amount of electricity, a larger number of battery modules are needed to form a whole power supply battery. The battery modules are electrically connected through pole connecting pieces, and the pole connecting pieces are fixed between the battery modules by welding. This results in a large amount of welding work, a long time spent on the production of the power supply battery, and a reduction in production efficiency. At the same time, the use of insulating side end plates between the battery modules increases the production cost. SUMMARY

[0004] Therefore, it is necessary to provide a battery module to solve the problems of a large amount of welding work, a long time spent on the production of the power supply battery, a reduction in production efficiency, and an increase in production cost caused by the existing battery module spliced by combining a row of cells with front and rear end plates.

[0005] A battery module comprises:

[0006] A battery pack has two rows of cell groups, and the two rows of cell groups are arranged adjacent to each other. Each row of cell groups has multiple cells arranged side by side. The anode of a front cell is adjacent to the cathode of a rear cell, and the anode of a left cell is adjacent to the cathode of a right cell.

[0007] A pole connecting piece electrically connects each cell in each row, and the two rows of cells are electrically connected through the pole connecting piece.

[0008] An end plate is arranged at both ends of the battery pack.

[0009] An insulating partition plate is arranged between adjacent two cells and between the cells and the end plate.

[0010] An output tab, through which the battery pack is electrically connected with an external component.

[0011] The battery module has two rows of battery cell groups, so the battery module has a large capacity. When a power supply battery is needed, the battery module needs fewer batteries than a traditional battery module with a single battery cell group, effectively reducing the welding workload and welding time, improving production efficiency, and effectively reducing the use of auxiliary materials and production costs.

[0012] In one embodiment, the pole connecting piece includes two plate portions and a lap portion, the lap portion is arranged between the two plate portions, one plate portion is connected with the anode of the battery cell, and the other plate portion is connected with the cathode of the battery cell.

[0013] In one embodiment, the pole connecting piece further includes a raised portion, the raised portion is arranged between the plate portion and the lap portion.

[0014] In one embodiment, the pole connecting piece further includes a fixing nut, the lap portion is provided with a lap hole, the fixing nut is fixedly connected with the lap portion, and the fixing nut is arranged in the lap hole.

[0015] In one embodiment, the output tab includes a main body portion, a connecting portion connected with the main body portion, and an output portion connected with the connecting portion, the main body portion is provided with a fixing hole for connecting with the pole of the battery cell, and the output portion is provided with an output hole for connecting with an external component.

[0016] In one embodiment, the battery module further includes a dismounting piece, the output tab is connected with the end plate through the dismounting piece.

[0017] In one embodiment, the dismounting piece includes a clamping portion and a mounting portion connected with the clamping portion, the upper end of the end plate is provided with a clamping groove, the clamping portion is clamped into the clamping groove, the main body portion is provided with a through hole, and the mounting portion is provided with a mounting hole matched with the through hole.

[0018] In one embodiment, the side end of the clamping portion is provided with a slot, the number of the slots is two, the two slots are arranged at intervals, thereby forming a resilient plate on the clamping portion, the resilient plate is provided with a buckle, the side wall of the end plate is provided with a clamping hole, the clamping hole is communicated with the clamping groove, the buckle is clamped into the clamping hole, and the dismounting piece is detachably connected with the end plate.

[0019] In one embodiment, the buckle is provided with a pushing surface for facilitating the clamping of the buckle into the clamping hole.

[0020] In one of the embodiments, the end plate is provided with a lifting hole for facilitating the user to load the lifting hook. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 An assembling structure of a battery module in one of the embodiments of the present application;

[0022] Figure 2 A structure of a pole connecting piece in the battery module as shown in Figure 1

[0023] Figure 3 A structure of an end plate in the battery module as shown in Figure 1

[0024] Figure 4 A structure of an output pole piece in the battery module as shown in Figure 1

[0025] Figure 5 A structure of a dismounting piece in the battery module as shown in Figure 1

[0026] Meanings of the reference numerals in the drawings are as follows:

[0027] 100 - battery module;

[0028] 10 - battery pack, 11 - battery cell;

[0029] 20 - pole connecting piece, 21 - plate portion, 22 - overlapping portion, 222 - overlapping hole, 23 - heightening portion;

[0030] 30 - end plate, 31 - lifting hole, 32 - clamping groove, 33 - clamping hole;

[0031] 40 - insulating partition plate;

[0032] 50 - output pole piece, 51 - main body portion, 511 - fixing hole, 512 - through hole, 52 - connecting portion, 53 - output portion, 531 - output hole;

[0033] 60 - dismounting piece, 61 - clamping portion, 62 - mounting portion, 621 - mounting hole, 63 - slotted hole, 64 - elastic plate, 65 - buckle, 651 - pushing surface. DETAILED DESCRIPTION

[0034] ​​​​In order to make the above object, characteristics and advantages of the present application more apparent, concrete embodiments of the present application will be described in detail with reference to the drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different manners without departing from the spirit of the present application. Those skilled in the art will appreciate the scope of the present application and can make similar modifications without departing from the spirit of the present application. Therefore, the present application is not limited by the embodiments disclosed below.

[0035] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0036] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0037] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0039] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only embodiment.

[0040] Please refer to Figure 1 , the battery module 100 of the embodiment of the present application comprises a battery pack 10, a pole connecting sheet 20, an end plate 30, an insulating partition plate 40 and an output pole sheet 50.

[0041] Please refer to Figure 1 , the battery pack 10 comprises two rows of battery cell groups, and the two rows of battery cell groups are arranged adjacent to each other. Each row of battery cell groups has a plurality of battery cells 11 arranged side by side. The anode of the previous battery cell 11 is adjacent to the cathode of the next battery cell 11. The anode of the left battery cell 11 is adjacent to the cathode of the right battery cell 11.

[0042] Please refer to Figure 1 , each of the battery cells 11 in each row is electrically connected by the pole connecting sheet 20, and the two rows of battery cells 11 are electrically connected by the pole connecting sheet 20. Please refer to Figure 2 , the pole connecting sheet 20 comprises two plate parts 21, a lap joint part 22 and a raised part 23. The lap joint part 22 is arranged between the two plate parts 21. One of the plate parts 21 is connected to the anode of the battery cell 11, and the other plate part 21 is connected to the cathode of the battery cell 11. The raised part 23 is arranged between the plate part 21 and the lap joint part 22. The arrangement of the raised part 23 can ensure that the lap joint part 22 does not contact the battery cell 11, thereby effectively avoiding the phenomenon of short circuit of the battery cell 11 and effectively improving the safety performance of the battery module 100.

[0043] Please refer to Figure 2The pole connecting piece 20 further comprises a fixing nut, the overlapping portion 22 is provided with an overlapping hole 222, the fixing nut is fixedly connected with the overlapping portion 22, and the fixing nut is arranged in the overlapping hole 222.

[0044] Please refer to Figure 3 The number of the end plates 30 is two, the two end plates 30 are arranged at the two ends of the battery pack 10 in a front-to-back manner, and the end plates 30 are provided with lifting holes 31 for facilitating the user to load a lifting hook. The end plate 30 located at the front side of the battery cell group is provided with a clamping groove 32, and the side wall of the end plate 30 located at the front side of the battery cell group is provided with a clamping hole 33, which is in communication with the clamping groove 32. The insulating partition plate 40 is arranged between two adjacent battery cells 11 and between the battery cell 11 and the end plate 30. The arrangement of the insulating partition plate 40 can effectively prevent the short circuit phenomenon between the battery cells 11 and effectively improve the safety performance of the battery module 100.

[0045] Please refer to Figure 1 The battery pack 10 is electrically connected with external components through the output pole piece 50. Please refer to Figure 4 The output pole piece 50 comprises a main body portion 51, a connecting portion 52 connected with the main body portion 51 and an output portion 53 connected with the connecting portion 52. The main body portion 51 is provided with a fixing hole 511 for connecting with the pole of the battery cell 11. The main body portion 51 is provided with a through hole 512. The output portion 53 is provided with an output hole 531 for connecting with external components.

[0046] Please refer to Figure 5 The battery module 100 further comprises a dismounting piece 60, and the output pole piece 50 is connected with the end plate 30 through the dismounting piece 60. The dismounting piece 60 comprises a clamping portion 61 and a mounting portion 62 connected with the clamping portion 61. The clamping portion 61 is clamped into the clamping groove 32. The side end of the clamping portion 61 is provided with two slotted grooves 63 arranged at intervals, so that an elastic plate 64 is formed on the clamping portion 61. The elastic plate 64 is provided with a buckle 65 clamped into the clamping hole 33. The dismounting piece 60 is detachably connected with the end plate 30. The buckle 65 is provided with a pushing surface 651 for facilitating the buckle 65 to be clamped into the clamping hole 33. The mounting portion 62 is provided with a mounting hole 621 matched with the through hole 512. The dismounting piece 60 can quickly dismount the output pole piece 50, facilitate the user to replace, reduce the welding amount and improve the production efficiency.

[0047] The utility model discloses beneficial effect is: because battery group 10 has two rows of electric core group, so the electric capacity of the battery module 100 is bigger, when needing to prepare a power supply battery, compared with the battery module of traditional single electric core group, the required number of the battery module 100 is less, effectively reduces the welding workload, reduces the welding length, improves production efficiency, can effectively reduce the usage amount of auxiliary material simultaneously, reduces production cost.

[0048] The technical features of the above-described embodiments can be combined in any manner, and to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not contradict, they should be considered as falling within the scope of the present disclosure.

[0049] The above-described embodiments only express several implementation manners of the utility model, and the description is more specific and detailed, but it should not be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A battery module, characterized by, The battery pack comprises: a battery pack having two rows of battery cell groups, the two rows of battery cell groups being arranged adjacent to each other, each row of battery cell groups having a plurality of battery cells arranged side by side, the anode of a front battery cell being adjacent to the cathode of a rear battery cell, the anode of a left battery cell being adjacent to the cathode of a right battery cell; a pole connecting plate, each of the battery cells in each row being electrically connected through the pole connecting plate, the two rows of battery cells being electrically connected through the pole connecting plate; an end plate, the end plate being arranged at two ends of the battery pack; an insulating partition plate, the insulating partition plate being arranged between adjacent two battery cells and between the battery cell and the end plate; and an output pole plate, the battery pack being electrically connected with external components through the output pole plate. The pole connecting plate comprises two plate portions and a lap portion, the lap portion being arranged between the two plate portions, one plate portion being connected with the anode of the battery cell, and the other plate portion being connected with the cathode of the battery cell.

2. The battery module of claim 1, wherein, The pole connecting plate further comprises a raised portion, the raised portion being arranged between the plate portion and the lap portion.

3. The battery module of claim 2, wherein, The pole connecting plate further comprises a fixing nut, the lap portion being provided with a lap hole, the fixing nut being fixedly connected with the lap portion, and the fixing nut being arranged in the lap hole.

4. The battery module of claim 3, wherein, The output pole plate comprises a main body portion, a connecting portion connected with the main body portion, and an output portion connected with the connecting portion, the main body portion being provided with a fixing hole for connecting with the pole of the battery cell, and the output portion being provided with an output hole for connecting with external components.

5. The battery module of claim 1, wherein, The battery pack further comprises a dismounting member, the output pole plate being connected with the end plate through the dismounting member.

6. The battery module of claim 5, wherein, The dismounting member comprises a clamping portion and a mounting portion connected with the clamping portion, the upper end of the end plate being provided with a clamping groove, the clamping portion being clamped into the clamping groove, the main body portion being provided with a through hole, and the mounting portion being provided with a mounting hole matched with the through hole.

7. The battery module of claim 6, wherein, The side end of the clamping portion is provided with two grooves, the two grooves being arranged at intervals, thereby forming an elastic plate on the clamping portion, the elastic plate being provided with a buckle, the side wall of the end plate being provided with a clamping hole, the clamping hole being communicated with the clamping groove, the buckle being clamped into the clamping hole, and the dismounting member being detachably connected with the end plate.

8. The battery module of claim 7, wherein, The buckle is provided with a pushing surface for facilitating the clamping of the buckle into the clamping hole.

9. The battery module of claim 8, wherein, The end plate is provided with a lifting hole for facilitating the loading of a lifting hook.

10. The battery module of claim 1, wherein, ​

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