CN211719691U - Battery module - Google Patents

Abstract

The application provides a battery module. The battery modules are arranged in a supporting box in a stacked mode, positive lugs of the battery cells of the adjacent battery modules on the current layer are located on two sides of the supporting box, when any two battery modules are arranged side by side, two lugs adjacent to the two battery cells on the same layer are positive and negative, the two lugs are connected, and therefore series connection of the two battery cells on the same layer can be achieved, and further series connection of the battery cells on the same layer of the plurality of battery modules can be achieved conveniently; the clamping structure is arranged on the supporting box, when the bridging rows are used for series connection, the bridging rows can be directly clamped in the clamping structure to fix the bridging rows, the assembly is convenient, the size of the supporting box is reduced, the occupied space is reduced, and the energy density is improved.

Description

Battery module

Technical Field

The application belongs to the technical field of batteries, and more specifically relates to a battery module.

Background

With the transformation of energy structures, electric energy which can be developed sustainably has gradually replaced traditional fossil fuels to become mainstream energy. For example, electric vehicles are gradually replacing conventional fuel vehicles, and are becoming a new trend, so that rechargeable batteries are rapidly developed. In order to improve the grouping efficiency and energy density of the battery module, a plurality of battery pack manufacturers tend to use a flexible battery module, the battery module is formed by expanding battery modules stacked by a plurality of battery units, and the number of the battery modules is selected according to actual requirements so as to extend the battery module. For such a flexible battery module, the cells inside the battery module are generally connected in series by a series electrical connection bank. And use the bridging row to establish ties between battery module and the battery module and carry out current transmission, the fastening form is bolted connection usually, and the packaging efficiency is low, and need thicken and consolidate bolt mounted position on the support box of battery module to set up the screw hole and lead to supporting the box volume great, occupation space is great.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the present application is to provide a battery module to solve the problem that the battery module series connection of the battery module existing in the related art is inconvenient and the occupied space is large.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions: the battery module comprises a plurality of battery modules and a plurality of electric connection rows which are sequentially arranged, wherein the plurality of electric connection rows comprise a plurality of bridging rows, each battery module comprises a support box and at least two battery units which are arranged in the support box in a stacked mode, each battery unit comprises a plurality of battery cells which are arranged in the support box in a stacked mode, the polar ear of each battery cell extends out of the support box, the positive polar ear of each battery cell in each battery unit is positioned on the same side of the support box, and the positive polar ears of each battery cell in two adjacent battery units are respectively positioned on two sides of the support box; two adjacent battery modules: two battery cores positioned on the same layer are connected in series through a bridging row; the two sides of each supporting box are provided with a plurality of clamping structures which are respectively clamped and positioned corresponding to each cross-connecting row.

In one embodiment, each of the holding structures includes a hook for engaging with a corresponding bridging row, and the hook is disposed on the supporting box.

In one embodiment, each hook is T-shaped, and two adjacent hooks are engaged with two sides of the corresponding cross-connecting row.

In one embodiment, the hooks are arranged in pairs, and each pair of hooks is matched with and clamped on two sides of the cross-connecting row.

In one embodiment, the middle of each support box is provided with a buckle for clamping the corresponding electric connection row.

In one embodiment, a groove is formed in each supporting box at a corresponding position between the buckle and the clamping structure, and one end of each electrical connection row is bent and extends into the groove.

In one embodiment, each support box includes a plurality of heat conduction frames arranged in a stacked manner, the heat conduction frames correspond to the battery cells one to one, and each battery cell is arranged in the corresponding heat conduction frame.

In one embodiment, the plurality of electrical connection rows further include an end connection row connecting the battery cells of the battery modules located at both ends of the plurality of battery modules to serially connect the adjacent two layers of battery cells and two lead-out rows respectively connecting the tabs at both ends of the plurality of serially connected battery cells.

In one embodiment, each battery module includes an even number of battery cells; in a battery module located at one end of a plurality of battery modules: the battery modules are arranged in pairs, each battery module comprises a plurality of battery units, each battery unit comprises a plurality of battery modules, and each battery module comprises a plurality of battery units; of the two battery cells at the outer layer of the battery module located at the other end of the plurality of battery modules: a plurality of tabs of each battery unit far away from the adjacent battery module are respectively electrically connected with the two lead-out rows; the battery units in the middle of the battery modules at the other ends of the plurality of battery modules are arranged in pairs, two adjacent battery units are arranged in a pair, and a plurality of tabs of each pair of battery units, which are far away from the adjacent battery modules, are electrically connected through the end connecting rows.

In one embodiment, each battery module includes an odd number of battery cells; in a battery module located at one end of a plurality of battery modules: the plurality of tabs of one battery unit positioned on one side of the corresponding battery module, which are far away from the adjacent battery module, are electrically connected through the lead-out rows, the rest battery units in the corresponding battery module are arranged in pairs, two adjacent battery units are arranged in a pair, and the plurality of tabs of each pair of battery units, which are far away from the adjacent battery module, are electrically connected through the end connecting rows; in the battery module located at the other end of the plurality of battery modules: the plurality of tabs of one battery unit positioned on the other side of the corresponding battery module, which are far away from the adjacent battery module, are electrically connected through the lead-out rows, the rest of battery units in the corresponding battery module are arranged in pairs, two adjacent battery units are arranged in a pair, and the plurality of tabs of each pair of battery units, which are far away from the adjacent battery module, are electrically connected through the end connecting rows.

In one embodiment, the two sides of each supporting box are provided with a plurality of clamping structures which are respectively clamped and positioned corresponding to each bridging row.

One or more technical solutions in the embodiments of the present application have at least one of the following technical effects:

according to the battery module provided by the embodiment of the application, the plurality of battery units are stacked in the supporting box of each battery module, the positive lugs of the battery cells of the adjacent existing battery units are positioned at two sides of the supporting box, when any two battery modules are arranged side by side, the two lugs adjacent to the two battery cells positioned on the same layer are positive and negative, and the two lugs are connected, so that the two battery cells on the same layer can be connected in series, and further the battery units on the same layer of the plurality of battery modules can be conveniently connected in series; the clamping structure is arranged on the supporting box, when the bridging rows are used for series connection, the bridging rows can be directly clamped in the clamping structure to fix the bridging rows, the assembly is convenient, the size of the supporting box is reduced, the occupied space is reduced, and the energy density is improved.

The battery module that this application embodiment provided sets up the recess on supporting the box, arranges the one end of electric connection row in the recess to make things convenient for the fixed connection of electrode and electric connection row, and can promote space utilization, reduce electric connection row occupation space, improve energy density.

According to the battery module provided by the embodiment of the application, the two adjacent layers of battery units in the battery module at the end part are connected in series by the using end connecting row, so that the battery units of the multiple battery modules are connected in series, and the assembly is convenient; the battery units in the battery modules do not need to be connected in series independently, each tab only needs to be connected with one electric connection row, the electric connection rows cannot be crossed in space, the safety is high, the occupied space of the electric connection rows is small, and the energy density is further improved; the tabs at the two ends of the serially connected battery units are respectively connected with the lead-out rows for convenient use.

The battery module that this application embodiment provided through range upon range of even number battery unit in with each battery module to the realization is drawn two rows of drawing out from the same end of a plurality of battery modules.

The battery module that this application embodiment provided is through range upon range of odd number battery cell in with each battery module to the realization is drawn two both ends of drawing row from a plurality of battery modules and is drawn.

The battery module that this application embodiment provided is through setting up card retaining structure on each support box to the realization is fixed to the joint of bridging row, and convenient fixed bridging row is convenient for corresponding utmost point ear and bridging row link to each other, promotes anti-vibration ability simultaneously.

According to the battery module provided by the embodiment of the application, each tab is connected with the corresponding electric connection bar in a welding mode, so that the internal resistance is reduced, and further the heat generation is reduced; meanwhile, the safety and the reliability can be improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or exemplary technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a battery module according to an embodiment of the present disclosure.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is a schematic structural view of the battery module of fig. 1.

Fig. 4 is a schematic structural diagram of a battery module according to a second embodiment of the present application.

Fig. 5 is a schematic structural diagram of a battery module according to a third embodiment of the present application.

Fig. 6 is a schematic structural diagram of a battery module according to a fourth embodiment of the present application.

Fig. 7 is a schematic structural diagram of a battery module according to a fifth embodiment of the present application.

Wherein, in the drawings, the reference numerals are mainly as follows:

100-a battery module; 10-a battery module; 11-a support box; 111-a thermally conductive frame; 112-a retaining structure; 1121-hook; 113-buckling; 114-a groove; 12-a battery cell; 13-electric core; 14-a tab; 141-positive tab; 142-negative tab; 20-an electrical connection bar; 21-a lead-out row; 22-end connecting row; 23-a cross-connect row; 231-connecting piece.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present application, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.

In the description of the present application, 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, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Reference throughout this specification to "one embodiment," "some embodiments," or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The first embodiment is as follows:

referring to fig. 1 to 3, a battery module 100 provided in the present application will now be described. The battery module 100 includes a plurality of battery modules 10 and a plurality of electrical connection rows 20, and the plurality of battery modules 10 are sequentially disposed. The plurality of electrical connection rows 20 includes a plurality of cross-connection rows 23, a plurality of end connection rows 22, and two lead-out rows 21. Each battery module 10 includes a support case 11 and at least two battery cells 12, wherein the battery cells 12 of each battery module 10 are stacked in the support case 11, and the battery cells 12 are supported and protected by the support case 11 while dissipating heat from the battery cells 12. The battery unit 12 includes a plurality of battery cells 13, and the battery cells 13 are stacked in the support case 11. The tab 14 is disposed on each cell 13, and the tab 14 on each cell 13 is divided into a positive tab 141 and a negative tab 142 to be connected to the two poles of the cell 13, respectively. The tab 14 of each cell 13 extends out of the support box 11 for convenient electrical connection. The positive electrode tab 141 of the battery cell 13 in each battery unit 12 is located on the same side of the support box 11, and the negative electrode tab 142 of the battery cell 13 in each battery unit 12 is also located on the same side of the support box 11, and the positive electrode tab 141 and the negative electrode tab 142 of each battery cell 13 are respectively located on two sides of the support box 11. The positive electrode tab 141 of each battery cell 13 in two adjacent battery units 12 is located on two sides of the supporting box 11, and the negative electrode tab 142 of each battery cell 13 in two adjacent battery units 12 is also located on two sides of the supporting box 11. So that the polarities of the corresponding tabs 14 of the battery cells 13 of the two adjacent battery units 12 are opposite in the stacking direction. Two adjacent battery modules 10: the two battery cells 13 located in the same layer are connected in series through the cross-over bar 23, so as to facilitate the series connection of the battery cells 13 located in the same layer in the plurality of battery modules 10, and also facilitate the series connection of the battery units 12 located in the same layer in the plurality of battery modules 10, which is convenient for assembly.

Referring to fig. 1 to fig. 3, two sides of each supporting box 11 are respectively provided with a plurality of retaining structures 112, and each retaining structure 112 is used for clamping and positioning the corresponding bridging row 23. The retaining structure 112 is provided on the support box 11, and when the bridging row 23 is installed, the bridging row 23 can be fixed by the retaining structure 112, so as to facilitate the fixed connection of the corresponding tab 14 with the bridging row 23, and also improve the vibration and shock resistance of the bridging row 23.

In the battery module 100 of the embodiment of the application, the plurality of battery units 12 are stacked in the support box 11 of each battery module 10, and the positive electrode tabs 141 of the battery cells 13 of the adjacent battery units 12 on the current layer are located on both sides of the support box 11, so that when any two battery modules 10 are arranged side by side, two electrode tabs 14 adjacent to two battery cells 13 on the same layer are positive and negative, and the two electrode tabs 14 are connected to each other, that is, two battery cells 13 on the same layer can be connected in series, and further, the battery units 12 on the same layer of the plurality of battery modules 10 can be conveniently connected in series; the clamping structure 112 is arranged on the supporting box 11, when the bridging row 23 is used for serial connection, the bridging row 23 can be directly clamped in the clamping structure 112 to fix the bridging row 23, so that the assembly is convenient, the size of the supporting box 11 is reduced, the occupied space is reduced, and the energy density is improved.

In one embodiment, referring to fig. 1 to fig. 3, each retaining structure 112 includes a hook 1121, and the hook 1121 is disposed on the supporting box 11, and when the bridging row 23 is installed, the corresponding bridging row 23 is engaged and clamped by the hook 1121. The problem that the internal resistance is increased due to tearing of the tabs 14 and even connection failure due to falling off of the bridging row 23 caused by displacement of the bridging row 23 under the severe working conditions of vibration, impact and the like is solved. In other embodiments, the retaining structure 112 may also be a slot provided on the support box 11, and when the bridging row 23 is installed, the bridging row 23 is placed in the corresponding slot to achieve the clamping fixation of the bridging row 23.

In an embodiment, referring to fig. 1 to fig. 3, the hooks 1121 are arranged in pairs, and each pair of hooks 1121 is matched to engage with two sides of the cross-connection row 23, so that each hook 1121 can be arranged to be smaller, the cross-connection row 23 is conveniently clamped between two hooks 1121, and the cross-connection row 23 is conveniently mounted and fixed. Of course, in some embodiments, the hooks 1121 may be made larger so that the hooks 1121 extend to the middle area of the width of the spanning row 23, and when the spanning row 23 is installed, the spanning row 23 may be inserted between the hooks 1121 and the supporting box 11 so that the hooks 1121 press and fix the spanning row 23 on the supporting box 11.

In one embodiment, each hook 1121 is formed in a shape of T, and two adjacent hooks 1121 can be engaged with two sides of the corresponding cross-over row 23, so as to reduce the occupied space of the hooks 1121.

In one embodiment, each support box 11 is provided with a snap 113 in the middle, and the snap 113 is used to snap the corresponding electrical connection row 20, that is, when each electrical connection row 20 is placed at the corresponding tab 14, the side edge of the electrical connection row 20 is snapped into the snap 113 to fix one side of the electrical connection row 20 by the snap 113, so that the tab 14 is fixedly connected to the electrical connection row 20.

In one embodiment, a groove 114 is formed on each supporting box 11 at a corresponding position between each buckle 113 and the retaining structure 112, and one end of each electrical connection row 20 is bent and extends into the groove 114. The supporting box 11 is provided with the groove 114, and one end of the electrical connection bar 20 is placed in the groove 114, so that the electrode 14 and the electrical connection bar 20 can be conveniently and fixedly connected, the space utilization rate can be improved, the occupied space of the electrical connection bar 20 is reduced, and the energy density is improved.

In one embodiment, referring to fig. 1 to 3, the plurality of electrical connection rows 20 further includes a plurality of end connection rows 22 and two lead-out rows 21. The end connection row 22 is used for connecting the battery units 12 of the battery modules 10 at two ends of the plurality of battery modules 10, so as to realize the serial connection of the adjacent two layers of battery units 12, that is, the battery units 12 at the same layer in the plurality of battery modules 10 are connected in series through the crossover row 23, and the adjacent two layers of battery units 12 in series are connected in series through the end connection row 22, so as to realize the serial connection of the plurality of battery units 12 corresponding to the plurality of battery modules 10, and the connection is convenient. And among these plurality of battery cells 12 connected in series: the tabs 14 on the outer sides of the two battery units 12 at the end are respectively connected with two lead-out rows 21, that is, the two lead-out rows 21 are respectively connected with the tabs 14 at the two ends of the battery units 12 connected in series, so as to facilitate use, and simultaneously, the parallel use of a plurality of battery cells 13 in each battery unit 12 can be realized. And the outside of the end cell 12 is the side of the cell 12 remote from the adjacent cell 12. The battery units 12 in the battery modules 10 do not need to be connected in series independently, each tab 14 only needs to be connected with one electric connection row 20, the electric connection rows 20 cannot be crossed in space, the safety is high, the occupied space of the electric connection rows 20 is small, and the energy density is further improved.

The battery units 12 of the multi-battery module 10 are connected in series by using the end connection rows 22, so that the battery units 12 of the multi-battery module 10 are connected in series, and the assembly is convenient; the battery units 12 in the battery modules 10 do not need to be connected in series independently, each tab 14 only needs to be connected with one electric connection row 20, the electric connection rows 20 cannot be crossed in space, the safety is high, the electric connection rows 20 occupy small space, and the energy density is further improved; the tab 14 at the two ends of the battery cells 12 connected in series is connected to the lead-out row 21 for easy use.

In one embodiment, referring to fig. 1 to 3, two battery modules 10 are provided, so that a plurality of battery units 12 corresponding to the two battery modules 10 are connected in series. In other embodiments, the number of battery modules 10 may be three, four, five, etc.

In one embodiment, referring to fig. 1 and fig. 3, each battery unit 12 includes two battery cells 13, and the two battery cells 13 are connected in parallel through the corresponding electrical connection row 20, so as to implement parallel use of the two battery cells 13 in each battery unit 12. In other embodiments, each battery unit 12 may include one cell 13, three cells 13, four cells 13, and so on.

In one embodiment, referring to fig. 1 and 3, each battery module 10 includes an even number of battery cells 12; in the battery module 10 located at one end of the plurality of battery modules 10: the plurality of battery units 12 are arranged in pairs, and two adjacent battery units 12 are arranged in a pair, and the tabs 14 of each pair of battery units 12 far away from the adjacent battery module 10 are electrically connected through the end connection row 22 to realize the series connection of the pair of battery units 12; the battery module 10 located at the other end of the plurality of battery modules 10 is located in the two battery cells 12 of the outer layer: a plurality of tabs 14 of each battery unit 12 far away from the adjacent battery module 10 are respectively electrically connected with the two lead-out rows 21 for convenient use, and a plurality of tabs 14 of each battery unit 12 far away from the adjacent battery module 10 are connected in parallel through each lead-out row 21; the battery cells 12 in the middle of the battery module 10 at the other end of the plurality of battery modules 10 are arranged in pairs, and two adjacent battery cells 12 are arranged in a pair, and the tabs 14 of each pair of battery cells 12 far away from the adjacent battery module 10 are electrically connected by the end connection row 22. This structure can realize that the two lead-out bars 21 are led out from the same end of the battery module 100 for convenient use.

In one embodiment, referring to fig. 1 and 3, each battery module 10 includes four battery cells 12; in the battery module 10 at one end: the four battery units 12 are divided into two pairs, two battery units 12 of each pair are adjacent, and a plurality of tabs 14 of each pair of battery units 12 far away from the adjacent battery module 10 are electrically connected through an end connection row 22, that is, the tabs 14 corresponding to the outer sides of each pair of battery units 12 are electrically connected with one end connection row 22, so that the parallel connection of the tabs 14 at the outer sides of the battery cells 13 in each battery unit 12 is realized, and the series connection of the two battery units 12 is also realized. For the battery module 10 at the other end, in the two battery cells 12 located at the outer layers: a plurality of tabs 14 of each battery unit 12 far away from the adjacent battery module 10 are electrically connected with two lead-out rows 21, and the tabs 14 corresponding to the outer sides of the two battery units 12 are electrically connected with the two lead-out rows 21, so that the parallel connection of the tabs 14 at the outer sides of the battery cells 13 in each battery unit 12 is realized; for the battery module 10 located at the other end, the two battery units 12 located near the middle are arranged in pairs, and the tabs 14 of the pair of battery units 12 far from the adjacent battery module 10 are electrically connected through the end connection row 22, that is, the tabs 14 corresponding to the outer sides of the pair of battery units 12 are all electrically connected with one end connection row 22, so that the parallel connection of the tabs 14 at the outer sides of the battery cells 13 in each battery unit 12 is realized, and the series connection of the two battery units 12 is also realized.

In one embodiment, each battery module 10 may include two battery cells 12, the tabs 14 on the outer sides of the two battery cells 12 in the battery module 10 at one end are connected in series by the end connection row 22, and the tabs 14 on the outer sides of the two battery cells 12 in the battery module 10 at the other end are electrically connected to the two lead-out rows 21, respectively.

In one embodiment, each battery module 10 may also include an even number of battery cells 12, such as six battery cells 12, eight battery cells 12, ten battery cells 12, and so forth.

In one embodiment, when installing the spanning row 23, the spanning row 23 can be simultaneously snapped into the corresponding snap 113 and catch structure 112 to better secure the spanning row 23.

In one embodiment, when the end connection row 22 is installed, one side of the end connection row 22 may be inserted into the corresponding catch 113 to secure one end of the end connection row 22.

In one embodiment, when the lead out row 21 is installed, one side of the lead out row 21 may be inserted into the corresponding catch 113 to fix one end of the lead out row 21. In some embodiments, when the lead row 21 extends out of the support box 11, the lead row 21 may be snapped into the corresponding catch structure 112.

In one embodiment, each tab 14 is welded to the corresponding electrical connection row 20 to ensure a reliable and secure connection of the tab 14 to the electrical connection row 20 to reduce internal resistance and thus heat generation; meanwhile, the safety and the reliability can be improved. In some embodiments, each tab 14 and the corresponding electrical connection row 20 may be joined using laser welding. Of course, in some embodiments, each tab 14 may be resistance welded to the corresponding electrical connection row 20.

In an embodiment, referring to fig. 1 to fig. 3, each supporting box 11 includes a plurality of heat conducting frames 111, the heat conducting frames 111 correspond to the battery cells 13, the plurality of heat conducting frames 111 are stacked to form the supporting box 11, and each battery cell 13 is disposed in the corresponding heat conducting frame 111, so that the battery cells 13 are stacked conveniently, and the size of the supporting box 11 can be conveniently set according to the number of the battery cells 13, which is convenient for use. And the heat conduction frames 111 are convenient to radiate the battery cell 13, and the tab 14 of the battery cell 13 is convenient to be led out from between the two adjacent heat conduction frames 111. In some embodiments, the supporting box 11 may also be an integrated box body, so as to facilitate the manufacturing process and ensure the strength of the whole structure of the supporting box 11.

In one embodiment, referring to fig. 1 to 3, each heat conducting frame 111 is provided with a clip 113 to conveniently clip the connected electrical connection row 20.

In an embodiment, referring to fig. 1 to fig. 3, each heat conducting frame 111 is provided with hooks 1121, and the hooks 1121 of two adjacent heat conducting frames 111 are matched with the clamping cross-connecting row 23. Of course, in some embodiments, two hooks 1121 may be disposed on each of the heat conducting frames 111.

In one embodiment, referring to fig. 1 to 3, each of the heat-conducting frames 111 may be formed by splicing a plurality of heat-conducting plates. In some embodiments, the heat conducting frame 111 may also be integrally formed.

Example two:

referring to fig. 4, the difference between the battery module 100 of the present embodiment and the battery module of the first embodiment is:

in this embodiment, there are three battery modules 10, so that a plurality of battery cells 12 corresponding to the three battery modules 10 are used in series. In other embodiments, the number of battery modules 10 may be two, four, five, etc.

In one embodiment, referring to fig. 4, each battery unit 12 includes a battery cell 13. In other embodiments, each battery unit 12 may include two cells 13, three cells 13, four cells 13, and so on.

Other structures of the battery module 100 of the present embodiment are the same as those of the battery module of the first embodiment, and are not described herein again.

Example three:

referring to fig. 5, the difference between the battery module 100 of the present embodiment and the battery module of the second embodiment is:

each battery module 10 includes an odd number of battery cells 12; in the battery module 10 located at one end of the plurality of battery modules 10: a plurality of tabs 14 of one battery unit 12 located at one side of the corresponding battery module 10, which are far away from the adjacent battery module 10, are electrically connected through a lead-out row 21, the other battery units 12 in the corresponding battery module 10 are arranged in pairs, and two adjacent battery units 12 are arranged in a pair, and a plurality of tabs 14 of each pair of battery units 12, which are far away from the adjacent battery module 10, are electrically connected through an end connecting row 22, so as to realize the series connection of each pair of battery units 12; in the battery module 10 located at the other end of the plurality of battery modules 10: the tabs 14 of one battery unit 12 on the other side of the corresponding battery module 10 far from the adjacent battery module 10 are electrically connected through the lead-out row 21, the other battery units 12 in the corresponding battery module 10 are arranged in pairs, and two adjacent battery units 12 are arranged in a pair, and the tabs 14 of each pair of battery units 12 far from the adjacent battery module 10 are electrically connected through the end connecting row 22. Thereby enabling the series connection of the plurality of battery cells 12 and the extraction of the two extraction rows 21 from both ends of the battery module 100 for use.

In one embodiment, referring to fig. 5, each battery module 10 includes five battery cells 12; in the battery module 10 at one end: a plurality of tabs 14 of one battery unit 12 on one side of the battery module 10, which are far away from the adjacent battery module 10, are electrically connected through a lead-out row 21, that is, the tabs 14 corresponding to the outer side of one battery unit 12 on one side of the battery module 10 are electrically connected with one lead-out row 21, so that the parallel connection of the tabs 14 on the outer side of the battery cells 13 in the battery unit 12 is realized; the remaining four battery units 12 in the battery module 10 are divided into two pairs, two battery units 12 in each pair are adjacent to each other, and a plurality of tabs 14 of each pair of battery units 12 far from the adjacent battery module 10 are electrically connected by an end connection row 22, that is, the tabs 14 corresponding to the outer sides of each pair of battery units 12 are electrically connected with one end connection row 22, so that the parallel connection of the tabs 14 at the outer sides of the battery cells 13 in each battery unit 12 is realized, and the series connection of the two battery units 12 is also realized. For the battery module 10 located at the other end: a plurality of tabs 14 of one battery unit 12 on the other side of the battery module 10, which are far away from the adjacent battery module 10, are electrically connected through a lead-out row 21, that is, the tabs 14 corresponding to the outer side of one battery unit 12 on the other side of the battery module 10 are electrically connected with one lead-out row 21, so that the parallel connection of the tabs 14 on the outer side of the battery cells 13 in the battery units 12 is realized; the remaining four battery units 12 in the battery module 10 are divided into two pairs, two battery units 12 in each pair are adjacent to each other, and a plurality of tabs 14 of each pair of battery units 12 far from the adjacent battery module 10 are electrically connected by an end connection row 22, that is, the tabs 14 corresponding to the outer sides of each pair of battery units 12 are electrically connected with one end connection row 22, so that the parallel connection of the tabs 14 at the outer sides of the battery cells 13 in each battery unit 12 is realized, and the series connection of the two battery units 12 is also realized.

In one embodiment, each battery module 10 may also include an odd number of cells 12, such as three cells 12, seven cells 12, nine cells 12, etc.

Other structures of the battery module 100 of the present embodiment are the same as those of the battery module of the second embodiment, and are not described herein again.

Example four:

referring to fig. 6, the difference between the battery module 100 of the present embodiment and the battery module of the second embodiment is:

in this embodiment, there are two battery modules 10, so that a plurality of battery cells 12 corresponding to the two battery modules 10 are used in series. In other embodiments, the number of battery modules 10 may be three, four, five, etc.

In one embodiment, referring to fig. 6, each battery unit 12 includes three battery cells 13. Each lead-out row 21 is connected with the corresponding tabs 14 of the three battery cells 13 of the corresponding battery unit 12, each end connection row 22 is connected with the corresponding six tabs 14 of the six battery cells 13 corresponding to the corresponding two groups of battery units 12, and the two adjacent tabs 14 of the two adjacent battery cells 13 located on the same layer are connected through the bridging row 23, so as to realize the series connection of the multiple groups of battery units 12, and the battery cells 13 in each group of battery units 12 are used in parallel.

In other embodiments, each battery unit 12 may include one cell 13, two cells 13, four cells 13, and so on.

Other structures of the battery module 100 of the present embodiment are the same as those of the battery module of the second embodiment, and are not described herein again.

Example five:

referring to fig. 7, the difference between the battery module 100 of the present embodiment and the battery module of the fourth embodiment is:

in this embodiment, the plurality of bridging rows 23 corresponding to each battery unit 12 are connected by the connecting sheet 231, so as to connect the bridging rows 23 to the tabs 14 of the corresponding battery cells 13, facilitate the fixing of the bridging rows 23, and simultaneously enable the battery cells 13 corresponding to each battery unit 12 to be connected in parallel.

In one embodiment, the connecting tabs 231 are integrally formed with the corresponding jumper row 23 to reduce internal resistance, reduce heat generation, and increase the strength of the connecting tabs 231 and the corresponding jumper row 23.

Other structures of the battery module 100 of the present embodiment are the same as those of the battery module of the fourth embodiment, and are not described herein again.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. Battery module, its characterized in that: the battery pack comprises a plurality of battery modules and a plurality of electric connection rows which are sequentially arranged, wherein the plurality of electric connection rows comprise a plurality of bridging rows, each battery module comprises a support box and at least two battery units which are arranged in the support box in a stacked mode, each battery unit comprises a plurality of battery cells which are arranged in the support box in a stacked mode, the polar ear of each battery cell extends out of the support box, the positive polar ear of each battery cell in each battery unit is positioned on the same side of the support box, and the positive polar ears of each battery cell in two adjacent battery units are respectively positioned on two sides of the support box; two adjacent battery modules: two battery cells positioned on the same layer are connected in series through the bridging row; and a plurality of clamping structures which are respectively clamped and positioned corresponding to the bridging rows are arranged on two sides of each supporting box.

2. The battery module according to claim 1, wherein: each clamping structure comprises a corresponding cross-connection row clamping hook in a matched clamping mode, and the clamping hooks are arranged on the supporting box.

3. The battery module according to claim 2, wherein: each pothook is T-shaped and is arranged, and two adjacent pothooks are matched and clamped with two sides corresponding to the cross-connecting row.

4. The battery module according to claim 2, wherein: the clamping hooks are arranged in pairs, and each pair of the clamping hooks is matched and clamped with two sides of the cross-connecting row.

5. The battery module according to any one of claims 1 to 4, wherein: the middle part of each support box is provided with a buckle used for clamping the corresponding electric connection row.

6. The battery module according to claim 5, wherein: grooves are formed in the corresponding positions between the buckles and the clamping structures on the supporting boxes, and one end of each electric connecting row is bent and extends into each groove.

7. The battery module according to any one of claims 1 to 4, wherein: each support box comprises a plurality of heat conduction frames which are arranged in a stacked mode, the heat conduction frames correspond to the battery cells one by one, and each battery cell is arranged in the corresponding heat conduction frame.

8. The battery module according to any one of claims 1 to 4, wherein: the electric connection row is characterized in that the electric connection row also comprises two leading-out rows which are connected with a plurality of lugs at two ends of the battery units, wherein the two leading-out rows are positioned at two ends of the battery modules, the battery units of the battery modules are connected with two adjacent layers in series, the end connection row of the battery units is connected with a plurality of series-connected lugs respectively.

9. The battery module according to claim 8, wherein: each of the battery modules includes an even number of the battery cells; in the battery module located at one end of the plurality of battery modules: the battery units are arranged in pairs, two adjacent battery units are arranged in a pair, and a plurality of tabs of each pair of battery units, which are far away from the adjacent battery module, are electrically connected through the end connecting row; the battery module at the other end of the plurality of battery modules is arranged in two battery units at the outer layer: a plurality of tabs of each battery unit far away from the adjacent battery module are respectively electrically connected with the two lead-out rows; the battery units positioned in the middle of the battery modules at the other ends of the plurality of battery modules are arranged in pairs, two adjacent battery units are arranged in a pair, and a plurality of tabs of each pair of battery units, which are far away from the adjacent battery modules, are electrically connected through the end connecting row.

10. The battery module according to claim 8, wherein: each of the battery modules includes an odd number of the battery cells; in the battery module located at one end of the plurality of battery modules: a plurality of tabs of one battery unit positioned on one side of the corresponding battery module, which are far away from the adjacent battery module, are electrically connected through the lead-out row, the rest of the battery units in the corresponding battery module are arranged in pairs, two adjacent battery units are arranged in a pair, and a plurality of tabs of each pair of the battery units, which are far away from the adjacent battery module, are electrically connected through the end connecting row; in the battery module located at the other end of the plurality of battery modules: the plurality of tabs of one battery unit located on the other side of the corresponding battery module, which are far away from the adjacent battery module, are electrically connected through the lead-out row, the rest of the battery units in the corresponding battery module are arranged in pairs, two adjacent battery units are arranged in a pair, and the plurality of tabs of each pair of battery units, which are far away from the adjacent battery module, are electrically connected through the end connecting row.

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