CN218482354U - Battery module - Google Patents

Abstract

The application discloses battery module relates to new forms of energy battery technical field. The battery module comprises a first shell and a second shell which are mutually buckled, wherein a plurality of battery cell modules which are arranged in an array are arranged between the first shell and the second shell; the first shell is respectively provided with a negative electrode collecting aluminum row, a positive electrode collecting aluminum row and a plurality of first connecting aluminum rows, and the second shell is provided with a plurality of second connecting aluminum rows; the negative electrode collecting aluminum bar and the positive electrode collecting aluminum bar respectively correspond to one of the battery cell modules, the first connecting aluminum bar is connected with two longitudinally adjacent battery cell modules, and the second connecting aluminum bar is connected with two transversely adjacent battery cell modules, so that the battery cell modules are connected in series through the first connecting aluminum bar and the second connecting aluminum bar. The production process can be simplified on the basis of bearing large current, and the production cost is reduced.

Description

Battery module

Technical Field

The application relates to new energy battery technical field, particularly, relates to a battery module.

Background

With the progress and development of society, the intellectualization in the aspects of storage, family, trip and the like, the diversification of mobile consumer electronic products, and the energy storage battery as a clean energy provider, the energy storage battery is more and more popular and popular with consumers and becomes an indispensable part of electronic products.

In practical application process, energy storage battery mainly exists with the form of battery package, and the battery package is the unified whole after a plurality of battery module and battery management system control jointly or manage, and the battery module generally includes the shell and assembles a plurality of electric cores in the shell, and the battery module still includes the busbar in order to realize the electricity between a plurality of electric cores.

At present, most of battery modules adopt resistance welding or laser welding processes of nickel-plated steel sheets or pure nickel sheets, the nickel-plated steel sheets and the pure nickel sheets cannot meet the module products of overlarge current, the battery modules are limited by the connection form of electric cores, generally, copper bars or aluminum sheets need to be connected in parallel to meet the performance of the overlarge current, and therefore the production process is complex and the production cost is high.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide a battery module, can simplify production technology on bearing the basis of heavy current to reduction in production cost.

The embodiment of the application is realized as follows:

the embodiment of the application provides a battery module, which comprises a first shell and a second shell which are mutually buckled, wherein a plurality of battery cell modules arranged in an array are arranged between the first shell and the second shell; the first shell is respectively provided with a negative electrode collecting aluminum row, a positive electrode collecting aluminum row and a plurality of first connecting aluminum rows, and the second shell is provided with a plurality of second connecting aluminum rows; the negative electrode collecting aluminum bar and the positive electrode collecting aluminum bar respectively correspond to one of the battery cell modules, the first connecting aluminum bar is connected with two longitudinally adjacent battery cell modules, and the second connecting aluminum bar is connected with two transversely adjacent battery cell modules, so that the battery cell modules are connected in series through the first connecting aluminum bar and the second connecting aluminum bar.

Optionally, the battery cell module includes a plurality of battery cells arranged side by side, and the plurality of battery cells are connected in parallel through the first connecting aluminum bar and the second connecting aluminum bar.

Optionally, the battery cell module is arranged along the straight line on horizontal, is parallel to each other on vertical, wherein, adjacent the polarity of battery cell module is opposite, and adjacent distance between the electric core equals.

Optionally, the first shell comprises a first support plate and a first grid arranged on the first support plate, and the second shell comprises a second support plate and a second grid arranged on the second support plate; the first grid and the second grid are used for limiting the battery cell and enabling two poles of the battery cell to be exposed, wherein the polarities of the battery cell modules are opposite.

Optionally, the first aluminum row and the second aluminum row are connected by a plurality of connecting beams, and the first aluminum row and the second aluminum row are respectively connected to two longitudinally adjacent cell modules.

Optionally, a bump is further disposed on the first support plate, and the bump is used for limiting the first aluminum connecting row.

Optionally, the second aluminum row is a straight strip, and a groove is further disposed on the second supporting plate, so that the second aluminum row is embedded into the groove.

Optionally, a first connection pin is arranged on the first connection aluminum bar, a second connection pin is arranged on the second connection aluminum bar, and the first connection pin and the second connection pin are used for being connected with a battery management system.

Optionally, the first connecting aluminum row and the second connecting aluminum row are made of soft aluminum, and the negative electrode collecting aluminum row and the positive electrode collecting aluminum row are made of hard aluminum.

Optionally, still be provided with a plurality of first landing legs and a plurality of hollow spliced pole on the first backup pad, be provided with in the second backup pad a plurality of with the second landing leg of first landing leg one-to-one, and a plurality of with the hollow spliced pole of second of first hollow spliced pole one-to-one, just first hollow spliced pole with the hollow spliced pole of second passes through the connecting piece and connects.

The beneficial effects of the embodiment of the application include:

the battery module that this application embodiment provided, through the first casing and the second casing of mutual lock, can play the effect of location protection to being located the electric core module between first casing and the second casing to guarantee the stability when follow-up electric core module uses. After fixing a position battery cell module, through setting up first connection aluminium row at first casing to set up the second at the second casing and connect the aluminium row, can make battery cell module establish ties, form required battery module. Simultaneously, gather the aluminium row and gather the aluminium row with the positive pole through setting up the negative pole respectively on first casing, can make the negative pole gather the aluminium row and correspond with the negative pole after establishing ties and be connected to make the positive pole gather the aluminium row and correspond with the positive pole after establishing ties and be connected, whole connection process can realize connecting with the help of the aluminium strip, and aluminium self has better heat-sinking capability, need not parallelly connected copper bar or aluminum sheet again and promotes too big electric current performance. Adopt above-mentioned form, can realize connecting the direct series connection realization of electricity core module, need not to adopt other complementary means, can simplify production technology on the basis of bearing the heavy current to reduction in production cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

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

fig. 2 is a second schematic structural diagram of a battery module according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a cell module and a first connection aluminum bar provided in the embodiment of the present application in a matching manner;

fig. 4 is a schematic structural diagram of a cell module and a second connection aluminum bar provided in the embodiment of the present application in a matching manner;

fig. 5 is a schematic structural diagram of a first housing according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a second housing according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a first aluminum row provided in an embodiment of the present application;

fig. 8 is a schematic structural diagram of a second aluminum row according to an embodiment of the present application.

Icon: 100-a battery module; 110-a first housing; 112-a first support plate; 114-a first grid; 116-a bump; 118-a first leg; 119-a first hollow connecting column; 120-a second housing; 122 — a second support plate; 124-a second grid; 126-a groove; 128-a second leg; 129-a second hollow connecting column; 130-cell module; 132-electric core; 140-negative electrode collecting aluminum row; 150-collecting aluminum rows from the positive electrodes; 160-first connecting aluminum row; 162-first aluminum row; 164-a second aluminum row; 166-connecting beam; 168 — first connection pin; 170-second connecting aluminum row; 172-second connection pin.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the present application, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that the product of the application is usually placed in when used, and are used only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.

At present, most of battery modules adopt resistance welding or laser welding processes of nickel-plated steel sheets or pure nickel sheets, the nickel-plated steel sheets and the pure nickel sheets cannot meet the module products of overlarge current, and the battery modules are limited by the connection form of an electric core, generally, copper bars or aluminum sheets need to be connected in parallel to meet the performance of the overlarge current, so that the production process is complex and the production cost is high. In view of the above problems, embodiments of the present application provide the following technical solutions to overcome the above problems.

Referring to fig. 1, fig. 2, fig. 3, and fig. 4, the present embodiment provides a battery module 100, which includes a first casing 110 and a second casing 120 that are fastened to each other, and a plurality of battery cell modules 130 arranged in an array are disposed between the first casing 110 and the second casing 120; the first shell 110 is respectively provided with a negative electrode collecting aluminum row 140, a positive electrode collecting aluminum row 150 and a plurality of first connecting aluminum rows 160, and the second shell 120 is provided with a plurality of second connecting aluminum rows 170; the negative pole gathers aluminium bar 140 and the positive pole and gathers aluminium bar 150 and correspond with one of them electricity core module 130 respectively, and first connection aluminium bar 160 is connected with vertical two adjacent electricity core modules 130, and second connection aluminium bar 170 is connected with horizontal two adjacent electricity core modules 130 to make electricity core module 130 connect the aluminium bar 170 through first connection aluminium bar 160 and second and establish ties.

Specifically, through set up the electric core module 130 that a plurality of arrays were arranged between first casing 110 and second casing 120, can fix a position electric core module 130 through first casing 110 and second casing 120 to protect electric core module 130, be favorable to guaranteeing the stability when using. In addition, the negative electrode collective aluminum row 140 and the positive electrode collective aluminum row 150 are respectively provided on the first case 110 as the positive electrode and negative electrode terminals of the entire battery module 100. Simultaneously, connect aluminium bar 160 and second through the first connection aluminium bar 170 that sets up on first casing 110 and establish ties battery cell module 130, when connecting, first connection aluminium bar 160 is connected two vertical adjacent battery cell module 130 'S positive pole and negative pole, and second connection aluminium bar 170 is connected two horizontal adjacent battery cell module 130' S positive pole and negative pole, and whole connection form can adopt the connection route of S type to establish ties all battery cell modules 130. When the first connecting aluminum bar 160 and the second connecting aluminum bar 170 are connected to the cell module 130, a laser welding connection mode may be adopted.

The battery module 100 that this application embodiment provided, through first casing 110 and second casing 120 of mutual lock, can play the effect of location protection to being located electric core module 130 between first casing 110 and the second casing 120 to stability when guaranteeing follow-up electric core module 130 and using. After locating battery cell module 130, through set up first connection aluminium bar 160 at first casing 110 to set up second connection aluminium bar 170 at second casing 120, can make battery cell module 130 establish ties, form required battery module 100. Simultaneously, gather aluminium bar 140 and anodal aluminium bar 150 that gathers through setting up the negative pole respectively on first casing 110, can make the negative pole gather aluminium bar 140 and correspond with the negative pole after establishing ties and be connected to make anodal aluminium bar 150 that gathers correspond with the positive pole after establishing ties and be connected, whole connection process can realize connecting with the help of the aluminium strip, and aluminium self has better heat-sinking capability, need not parallelly connected copper bar or aluminum sheet again and promotes too big electric current performance. By adopting the above form, the connection of the battery cell module 130 can be realized by direct series connection without adopting other auxiliary means, the production process can be simplified on the basis of bearing large current, and the production cost is reduced.

As shown in fig. 2, the cell module 130 includes a plurality of cells 132 arranged side by side, and the plurality of cells 132 are connected in parallel by a first connecting aluminum bar 160 and a second connecting aluminum bar 170.

Specifically, a plurality of electric cores 132 that constitute electric core module 130 are arranged at intervals between along on horizontal, are favorable to the heat dissipation of electric core 132 self, promote the heat-sinking capability. Meanwhile, the same polarity of the battery cell 132 at the same end in each battery cell module 130 is the same, and at this time, when the two ends of the battery cell 132 are respectively connected with the first connecting aluminum bar 160 and the second connecting aluminum bar 170, the parallel connection of a plurality of battery cells 132 in the same battery cell module 130 can be realized.

Referring to fig. 2 and fig. 3, the cell modules 130 are arranged along a straight line in the transverse direction, and are parallel to each other in the longitudinal direction, wherein the polarities of the adjacent cell modules 130 are opposite, and the distances between the adjacent cells 132 are equal.

Concrete, arrange along the straight line on horizontal through with electric core module 130, make things convenient for the second to connect aluminium bar 170 and connect horizontal electric core module 130. In addition, be parallel to each other on vertical through electric core module 130, make things convenient for first connection aluminium bar 160 to connect vertical two adjacent electric core modules 130. In addition, the distance between the adjacent electric cores 132 is equal, when being convenient for connect the electric core module 130 of different positions department, first connection aluminum bar 160 and second connection aluminum bar 170 have the commonality, need not to adjust the specification size of first connection aluminum bar 160 and second connection aluminum bar 170, be convenient for assembly connection. It can be understood that when the polarity of the adjacent cell modules 130 is set to be opposite, the series connection between the cell modules 130 can be realized by adopting the above-mentioned form of connection.

As shown in fig. 2, 5 and 6, the first housing 110 includes a first support plate 112 and a first mesh 114 provided on the first support plate 112, and the second housing 120 includes a second support plate 122 and a second mesh 124 provided on the second support plate 122; the first grid 114 and the second grid 124 are used for limiting the battery cell 132 and exposing two poles of the battery cell 132.

Specifically, when the cell modules 130 are connected in series, the first aluminum busbar 160 is disposed on the first support plate 112 and electrically connected to the cell 132, and the second aluminum busbar 170 is disposed on the second support plate 122 and electrically connected to the cell 132. At this time, in order to ensure that the required connection can be achieved, the first grid 114 needs to be disposed on the first support plate 112, and the second grid 124 needs to be disposed on the second support plate 122, so that the two poles of the battery cell 132 are exposed, and the required electrical connection relation is achieved while the limit is ensured.

As shown in fig. 7, the first aluminum connecting row 160 includes a first aluminum row 162 and a second aluminum row 164, which are arranged in parallel, and the first aluminum row 162 and the second aluminum row 164 are connected by a plurality of connecting beams 166, wherein the first aluminum row 162 and the second aluminum row 164 are respectively connected to two cell modules 130 that are longitudinally adjacent to each other.

Specifically, through parallel arrangement's first aluminium row 162 and second aluminium row 164, just in time correspond with two vertical parallel electric core modules 130 to connect two vertical adjacent electric core modules 130. Meanwhile, in order to ensure effective communication between two adjacent cell modules 130 and reduce heat generation, the first aluminum row 162 and the second aluminum row 164 are connected by a plurality of connecting beams 166, so as to reduce the connection resistance between the first aluminum row 162 and the second aluminum row 164. It can be understood that the first aluminum connecting row 160 can be made by integrally cutting, bending and molding, so as to avoid bad contact and serious heat generation at the connecting part when a plurality of connecting points exist.

As shown in fig. 5, the first supporting plate 112 is further provided with a bump 116, and the bump 116 is used for limiting the first aluminum connecting row 160.

Adopt above-mentioned form, when first connection aluminium bar 160 is connected with electric core module 130, will first connect aluminium bar 160 to set up on first backup pad 112 to carry on spacingly to first connection aluminium bar 160 through lug 116, avoid being in first connection aluminium bar 160 and electric core 132 welding process in the skew dislocation of first connection aluminium bar 160 and influence the welding effect.

As shown in fig. 6 and 8, the second aluminum connecting row 170 is a straight strip, and the second supporting plate 122 is further provided with a groove 126, so that the second aluminum connecting row 170 is inserted into the groove 126.

In the above manner, when the second connection aluminum bar 170 is connected with the electric core module 130, the second connection aluminum bar 170 is firstly arranged on the second support plate 122, and the second connection aluminum bar 170 is limited by the groove 126, so that the welding effect is prevented from being influenced by the offset and dislocation of the second connection aluminum bar 170 in the welding process of the second connection aluminum bar 170 and the electric core 132.

As shown in fig. 7 and 8, the first aluminum row 160 is provided with a first connection pin 168, the second aluminum row 170 is provided with a second connection pin 172, and the first connection pin 168 and the second connection pin 172 are used for connecting with a Battery Management System (BMS).

Specifically, the battery management system is a device that cooperates with the monitoring of the state of the battery module 100, and is mainly used for intelligently managing and maintaining each battery cell 132, preventing the battery cell 132 from being overcharged and overdischarged, and prolonging the service life of the battery module 100. The battery management system can also monitor and collect the state parameters of the battery core module 130 in real time, perform necessary analysis and calculation on the related state parameters to obtain more system state evaluation parameters, and implement effective control on the battery module 100 according to a specific protection control strategy to ensure safe and reliable operation of the whole battery module 100.

In an alternative embodiment of the present application, the first aluminum connecting row 160 and the second aluminum connecting row 170 are made of soft aluminum, and the negative electrode collective aluminum row 140 and the positive electrode collective aluminum row 150 are made of hard aluminum.

Specifically, when the first aluminum row 160 and the second aluminum row 170 are made of soft aluminum, the 1060-O state soft aluminum may be used, and the aluminum rows may be used only by performing a cleaning process. When the cathode collective aluminum row 140 and the anode collective aluminum row 150 are made of hard aluminum, 1060-H24 hard aluminum can be adopted, and the aluminum rows are plated with copper and then plated with nickel, so that the stability of overlarge current is maintained, and the aluminum rows are not easy to oxidize and corrode.

As shown in fig. 5 and 6, the first support plate 112 is further provided with a plurality of first legs 118 and a plurality of first hollow connecting columns 119, the second support plate 122 is provided with a plurality of second legs 128 corresponding to the first legs 118 one to one, and a plurality of second hollow connecting columns 129 corresponding to the first hollow connecting columns 119 one to one, and the first hollow connecting columns 119 and the second hollow connecting columns 129 are connected by a connecting member.

Specifically, when first casing 110 and second casing 120 are connected in the lock, through with first landing leg 118 and second landing leg 128 one-to-one, can play the effect of protection to electric core 132 between first casing 110 and the second casing 120, avoid receiving external extrusion, be favorable to guaranteeing the stability when using. Meanwhile, through the plurality of second hollow connecting columns 129 corresponding to the first hollow connecting columns 119 in a one-to-one manner, the first shell 110 and the second shell 120 can be reliably connected through connecting pieces such as bolts and the like penetrating through the first hollow connecting columns 119 and the second hollow connecting columns 129, and the problem that the use reliability is affected due to looseness of the first shell 110 and the second shell 120 in the use process is avoided.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A battery module is characterized by comprising a first shell and a second shell which are mutually buckled, wherein a plurality of battery cell modules which are arranged in an array are arranged between the first shell and the second shell; the first shell is respectively provided with a negative electrode collecting aluminum bar, a positive electrode collecting aluminum bar and a plurality of first connecting aluminum bars, and the second shell is provided with a plurality of second connecting aluminum bars; the negative electrode collecting aluminum bar and the positive electrode collecting aluminum bar respectively correspond to one of the battery cell modules, the first connecting aluminum bar is connected with two longitudinally adjacent battery cell modules, and the second connecting aluminum bar is connected with two transversely adjacent battery cell modules, so that the battery cell modules are connected in series through the first connecting aluminum bar and the second connecting aluminum bar.

2. The battery module according to claim 1, wherein the cell module comprises a plurality of cells arranged side by side, and the plurality of cells are connected in parallel through the first connecting aluminum row and the second connecting aluminum row.

3. The battery module of claim 2, wherein the cell modules are arranged along a straight line in the transverse direction and are parallel to each other in the longitudinal direction, wherein the polarities of the adjacent cell modules are opposite, and the distances between the adjacent cells are equal.

4. The battery module according to claim 2 or 3, wherein the first case includes a first support plate, and a first mesh provided on the first support plate, and the second case includes a second support plate, and a second mesh provided on the second support plate; the first grid and the second grid are used for limiting the battery cell and enabling two poles of the battery cell to be exposed.

5. The battery module of claim 4, wherein the first aluminum connecting row comprises a first aluminum row and a second aluminum row which are arranged in parallel, the first aluminum row and the second aluminum row are connected through a plurality of connecting beams, and the first aluminum row and the second aluminum row are respectively connected with two longitudinally adjacent cell modules.

6. The battery module according to claim 5, wherein a bump is further disposed on the first supporting plate, and the bump is used for limiting the first aluminum connecting row.

7. The battery module according to claim 4, wherein the second aluminum connecting row is a straight bar type, and a groove is further formed in the second supporting plate so that the second aluminum connecting row is inserted into the groove.

8. The battery module according to any one of claims 1-3, wherein the first connecting aluminum row is provided with a first connecting pin, the second connecting aluminum row is provided with a second connecting pin, and the first connecting pin and the second connecting pin are used for connecting with a battery management system.

9. The battery module according to any one of claims 1 to 3, wherein the first connecting aluminum row and the second connecting aluminum row are made of soft aluminum, and the negative electrode collective aluminum row and the positive electrode collective aluminum row are made of hard aluminum.

10. The battery module according to claim 4, wherein the first support plate is further provided with a plurality of first support legs and a plurality of first hollow connecting columns, the second support plate is provided with a plurality of second support legs corresponding to the first support legs one to one, and a plurality of second hollow connecting columns corresponding to the first hollow connecting columns one to one, and the first hollow connecting columns and the second hollow connecting columns are connected by connecting members.

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