CN214898766U

CN214898766U - Battery cell module and battery pack

Info

Publication number: CN214898766U
Application number: CN202120549422.XU
Authority: CN
Inventors: 张明
Original assignee: Evergrande New Energy Technology Shenzhen Co Ltd
Current assignee: Evergrande New Energy Technology Shenzhen Co Ltd
Priority date: 2021-03-17
Filing date: 2021-03-17
Publication date: 2021-11-26
Anticipated expiration: 2031-03-17

Abstract

The utility model discloses an electricity core module and battery package, this electricity core module include module support and electric core, and the relative setting of module support all is equipped with electric core portion of holding on the surface, and electric core portion of holding is a plurality of that the interval set up, and electric core is a plurality of, and every electric core cooperation is in an electric core portion of holding. Two adjacent battery cells positioned on the same surface of the module bracket are arranged in series; two oppositely arranged battery cells on different surfaces of the module support are arranged in parallel. The battery core module is simple in structure, reasonable in battery core arrangement, capable of forming a larger battery core module and capable of being directly assembled into a battery pack, space utilization rate of the battery core module or the battery pack is improved, and volume energy ratio is improved.

Description

Battery cell module and battery pack

Technical Field

The utility model relates to a battery technology field especially relates to an electricity core module and battery package.

Background

At present, current laminate polymer battery package is mostly through assembling into the module with electric core earlier to combine the machine component to assemble into the module, install a plurality of modules to the battery package in again, through the multi-span copper bar, the cluster becomes the battery package in parallel. But the module structure of assembling is comparatively complicated, and occupation and extravagant space are more, and the energy density of whole battery package is lower.

SUMMERY OF THE UTILITY MODEL

A first object of the utility model is to provide an electricity core module, this electricity core module's simple structure, electric core are arranged rationally, can constitute bigger electric core module, also can directly assemble into the battery package, have promoted the space utilization of electric core module or battery package, have promoted the volume energy ratio.

A second object of the present invention is to provide a battery pack, which has a high space utilization ratio and a high energy density.

For realizing the above technical effect, the technical scheme of the utility model as follows:

the utility model discloses an electricity core module, include: the battery cell comprises module supports, a battery cell body and a battery cell body, wherein the surfaces of the module supports, which are arranged oppositely, are provided with a plurality of battery cell body accommodating parts which are arranged at intervals; electric core, electric core is a plurality of, every electric core all cooperates one in the electric core portion of holding: wherein: two adjacent battery cells on the same surface of the module support are arranged in series; the two oppositely arranged battery cells on different surfaces of the module support are arranged in parallel.

In some embodiments, 2 or 3 of the cell holders are provided on two oppositely disposed surfaces of the module carrier.

In some embodiments, a spacing protrusion is disposed in the module support, and the spacing protrusion is located between two adjacent cell accommodating portions.

In some specific embodiments, first receiving grooves are formed in two oppositely-arranged surfaces of the interval protrusions, and the first receiving grooves are used for receiving tabs of the battery cells.

In some more specific embodiments, the spacing protrusion is further provided with a mounting groove, and the mounting groove is communicated with the two first receiving grooves; the battery cell module further comprises a serial-parallel junction piece, the serial-parallel junction piece is matched in the mounting groove, and the serial-parallel junction piece is used for serially connecting two adjacent battery cells and is used for parallelly connecting two oppositely arranged battery cells.

In some embodiments, both ends of the module support are provided with stopping protrusions, and both surfaces of the stopping protrusions, which are oppositely arranged, are provided with second receiving grooves, and the second receiving grooves are used for receiving tabs of the battery cells.

In some specific embodiments, the battery cell module further includes a parallel junction piece, the parallel junction piece is fitted in the second accommodating groove, and the parallel junction piece is used for connecting two battery cells oppositely arranged in parallel.

In some more specific embodiments, the parallel bus bar is a U-shaped bus bar, and the two flat plate portions of the U-shaped bus bar are respectively fitted in the two second receiving grooves.

The utility model also discloses a battery package, include: a box body; the battery cell modules are arranged in the box body, and are matched with the battery cell module in parallel; the total positive bus bar is used for connecting the positive terminals of the battery cell modules; and the total negative bus bar is used for connecting a plurality of negative terminals of the battery cell modules.

In some embodiments, a plurality of third accommodating grooves are formed in the box body, and each third accommodating groove is used for accommodating one battery cell module; the battery cell module comprises a protective shell and a plurality of battery cell modules, and the battery cell modules are arranged in the protective shell in parallel.

The utility model discloses a battery module's beneficial effect: because the relative setting of module support is equipped with electric core portion of holding on the surface, after the installation finishes, can assemble into the longer electric core module of length after a plurality of electric cores are through cluster and parallel, the electric core module of constitution can be further horizontal or vertical overall arrangement to the battery package in, also can further constitute the bigger electric core module of size and then install in the battery package, greatly reduced the assembly process of electric core module and battery package, the structure of electric core module and battery package has been simplified, the space utilization of battery package has been promoted, the energy density of battery package has been promoted.

The utility model discloses a beneficial effect of battery package: the battery pack of this embodiment, owing to have the aforesaid electric core module, optimized battery pack inner space structure space, reduce and play the structure of connecting the installation effect, reduce weight and cost, promote battery pack mass ratio energy and volumetric specific energy.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is an exploded schematic view of a battery cell module according to a first embodiment of the present invention.

Fig. 2 is an enlarged schematic view of fig. 1 at circle a.

Fig. 3 is an enlarged schematic view of fig. 1 at circle B.

Fig. 4 is a schematic structural diagram of a plurality of assembled battery cell modules according to a first embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a battery cell module according to the second embodiment of the present invention.

Fig. 6 is an exploded schematic view of a battery cell module according to a second embodiment of the present invention.

Fig. 7 is a partial structural schematic diagram of a battery pack using the cell module according to the first embodiment.

Fig. 8 is a partial structural schematic diagram of a battery pack using the cell module according to the second embodiment.

Reference numerals:

1. a module support; 11. a cell housing section; 12. spacing protrusions; 121. a first accommodating groove; 122. mounting grooves; 13. stopping the bulge; 131. a second accommodating groove; 14. positioning holes;

2. an electric core; 3. a serial-parallel junction; 4. a parallel manifold;

100. a box body; 110. a third accommodating groove; 200. a total positive bus bar; 300. a total negative bus bar; 400. and (4) protecting the shell.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.

In the description of the present invention, it is to be understood that 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, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

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

The specific structure of the cell module according to the embodiment of the present invention is described below with reference to fig. 1 to 6.

The utility model discloses an electric core module, as shown in fig. 1-6, this electric core module includes module support 1 and electric core 2, and the relative setting of module support 1 all is equipped with electric core portion of holding 11 on the surface, and electric core portion of holding 11 is a plurality of that the interval set up, and electric core 2 is a plurality of, and every electric core 2 all cooperates in an electric core portion of holding 11. Two adjacent battery cores 2 positioned on the same surface of the module bracket 1 are arranged in series; two oppositely arranged cells 2 located on different surfaces of the module carrier 1 are arranged in parallel.

It can be understood that, because the relative setting of module support 1 is equipped with electric core portion of holding 11 on the surface, after the installation finishes, the longer electric core group of length can be assembled into through the series-parallel connection back to a plurality of electric cores 2, the electric core group of constitution can be further horizontal or vertically overall arrangement to the battery package in, also can further constitute the bigger electric core module of size, then in installing the battery package, greatly reduced the assembly process of electric core module and battery package, the structure of electric core module and battery package has been simplified, the space utilization of battery package has been promoted, the energy density of battery package has been promoted.

Optionally, the number of the cell holders 11 on the surface of each module carrier 1 is 2 or 3.

In some embodiments, as shown in fig. 2, a spacing protrusion 12 is provided in the module support 1, and the spacing protrusion 12 is located between two adjacent cell accommodating portions 11. It can be understood that the spacing protrusions 12 can limit the battery cells 2, and avoid the collision between two adjacent battery cells 2.

In some specific embodiments, as shown in fig. 2, two oppositely disposed surfaces of the spacing protrusion 12 are provided with first receiving grooves 121, and the first receiving grooves 121 are used for receiving tabs of the battery cell 2. It can be understood that the first accommodating groove 121 that adds can fix the utmost point ear of electric core 2 better, guarantees that the utmost point ear of two electric cores 2 of adjacent setting can contact steadily to ensure that two adjacent batteries establish ties.

In some more specific embodiments, as shown in fig. 2, the spacing protrusion 12 is further provided with a mounting groove 122, and the mounting groove 122 is communicated with the two first receiving grooves 121. The battery cell module further comprises a serial-parallel bus piece 3, the serial-parallel bus piece 3 is matched in the mounting groove 122, and the serial-parallel bus piece 3 is used for serially connecting two adjacent battery cells 2 and is used for connecting two battery cells 2 which are oppositely arranged in parallel.

It can be understood that, according to the aforesaid lie in two electric core 2 series connection settings of the adjacent setting of same surface of module support 1, lie in the parallelly connected setting of two electric core 2 of the relative setting on the different surfaces of module support 1, thereby the utmost point ear of two adjacent electric core 2 can hold and accomplish the series connection in first holding tank 121, if external conductor realizes that the parallelly connected of two relative electric core 2 will lead to whole electric core module's wiring very complicated, manufacturing cost has not only been promoted, electric core module's reliability has still been reduced. In this embodiment, the serial-parallel bus bar 3 penetrating through the mounting groove 122 can connect two electric cores 2 arranged oppositely, so that serial connection and parallel connection between four electric cores 2 are realized by using one bus bar 3, and the structure of the electric core module is greatly simplified.

In some embodiments, as shown in fig. 3, the module support 1 is provided with two stopping protrusions 13 at two ends thereof, and two opposite surfaces of the stopping protrusions 13 are provided with second receiving grooves 131, where the second receiving grooves 131 are used for receiving tabs of the battery cells 2. It can be understood that, it can be understood that the second holding groove 131 that is added can better fix the tab that is located in the end portion electric core 2 of the module support 1, and it is ensured that the tabs of two adjacent electric cores 2 can stably contact, thereby ensuring that the tab is located in the end portion electric core 2 of the module support 1 and connected in parallel.

In some specific embodiments, as shown in fig. 3, the cell module further includes a parallel bus bar 4, the parallel bus bar 4 is fitted in the second accommodating groove 131, and the parallel bus bar 4 is used for connecting two cells 2 oppositely arranged in parallel. If the external lead realizes the parallel connection of two opposite battery cores 2, the wiring of the whole battery core module is very complicated, the manufacturing cost is improved, and the reliability of the battery core module is also reduced. In this embodiment, the parallel connection between two electric cores 2 without wires is realized by the parallel connection confluence pieces 4 buckled in the second accommodating grooves 131, and the structure of the electric core module is greatly simplified.

In some more specific embodiments, as shown in fig. 3, the parallel bus bar 4 is a U-shaped bus bar, and two flat plate portions of the U-shaped bus bar are respectively fitted in the two second receiving grooves 131. Therefore, the matching reliability of the parallel connection confluence piece 4 and the two second accommodating grooves 131 can be ensured, and the phenomenon that the parallel connection of the electric cores 2 fails due to the fact that the parallel connection confluence piece 4 falls off is avoided.

In some specific embodiments, as shown in fig. 1, the module support 1 is provided with a plurality of positioning holes 14, and the positioning holes 14 are used for positioning and connecting a plurality of battery cell modules. According to the aforesaid, can assemble into the longer electric core group of length after a plurality of electric cores 2 pass through the cluster, and the electric core group of constitution can be further transversely or vertically arranged to the battery package in, also can further constitute the bigger electric core module of size, then in installing the battery package. Be equipped with locating hole 14 on the module support 1 of every electric core module, locating hole 14 can realize the location and the equipment of a plurality of module supports 1 to conveniently assemble into bigger electric core module or directly assemble into the battery package with a plurality of electric core modules.

The first embodiment is as follows:

the structure of a cell module according to an embodiment of the present invention is described below with reference to fig. 1 to 4.

As shown in fig. 1 to 4, the cell module of the present embodiment includes a module support 1, a cell 2, a serial-parallel bus bar 3, and a parallel bus bar 4. The relative setting of module support 1 all is equipped with two intervals on the surface and sets up electric core portion of holding 11, and electric core 2 is four, and every electric core 2 all cooperates in an electric core portion of holding 11. Be equipped with interval arch 12 between two electric core accommodation portion 11, be equipped with two first holding tanks 121 and mounting groove 122 on the interval arch 12, two first holding tanks 121 are located two surfaces of the relative setting of interval arch 12, mounting groove 122 and two first holding tanks 121 intercommunication. The serial-parallel bus piece 3 is matched in the mounting groove 122, and the serial-parallel bus piece 3 is used for connecting two adjacent electric cores 2 in series and connecting two electric cores 2 oppositely arranged in parallel. Both ends of module support 1 all are equipped with ends and support protruding 13, and two surfaces that end the relative setting of protruding 13 all are equipped with second holding tank 131. The parallel bus-bar 4 is a U-shaped bus-bar, two flat plate portions of the U-shaped bus-bar are respectively matched in the two second accommodating grooves 131, and the parallel bus-bar 4 is used for connecting two electric cores 2 which are oppositely arranged in parallel. The spacing protrusions 12 and the stopping protrusions 13 are respectively provided with two positioning holes 14, and the positioning holes 14 are used for positioning and connecting a plurality of battery cell modules.

The battery cell module of this embodiment has the advantages:

firstly, the method comprises the following steps: the battery cell modules can be directly and transversely or longitudinally distributed into the battery pack and then fixed and connected in series and parallel to form a complete battery system, so that the assembly procedures of the soft package module and the battery pack are greatly reduced, the space utilization rate of the battery pack is improved, and the energy density of the battery pack is greatly improved;

secondly, the method comprises the following steps: can be according to the nimble layout module of battery package length, through changing the busbar support, adopt 2 quantity strings of different electric cores to form a long module, more nimble battery package space of utilizing, bigger improvement the energy density of battery package.

Example two:

the structure of a cell module according to an embodiment of the present invention is described below with reference to fig. 5 to 6.

As shown in fig. 5 to fig. 6, the structure of the battery cell module of this embodiment is substantially the same as that of the battery cell module of the first embodiment, except that three battery cell accommodating portions 11 are disposed on the surfaces of the module brackets 1, which are opposite to each other, and 6 battery cells 2 are disposed on the battery cell module.

The specific structure of the battery pack according to the embodiment of the present invention is described below with reference to fig. 7 to 8.

The utility model also discloses a battery pack, as shown in fig. 7-8, this battery pack includes box 100, electric core module, total positive busbar 200 and total negative busbar 300, and electric core module is a plurality of, and a plurality of electric core modules cooperate side by side in box 100, and total positive busbar 200 is used for connecting the positive terminal of a plurality of electric core modules, and total negative busbar 300 is used for connecting the negative pole end of a plurality of electric core modules.

The battery pack of this embodiment, owing to have the aforesaid electric core module, optimized battery pack inner space structure space, reduce and play the structure of connecting the installation effect, reduce weight and cost, promote battery pack mass ratio energy and volumetric specific energy.

In some embodiments, as shown in fig. 7 to 8, a plurality of third receiving grooves 110 are provided in the box 100, and each third receiving groove 110 is used for receiving one cell module. The battery cell module comprises a protective casing 400 and a plurality of battery cell modules, and the battery cell modules are arranged in the protective casing 400 in parallel. It can be understood that, in actual installation, pack into big module with a plurality of battery modules earlier, accomplish a plurality of battery module's series connection welding back and wrap up welding or bolt fastening through protecting sheathing 400 and form electric core module, then put into box 100 with a plurality of electric core modules that the equipment was accomplished, finally establish ties a plurality of electric core modules through total positive busbar 200 and total negative busbar 300 again. This kind constitutes the mounting means of battery package in installing box 100 with a plurality of electric core module component electric core module again earlier, has optimized the inside space structure space of battery package, reduces the structure that plays the connection installation effect, reduces weight and cost, promotes the mass ratio energy and the volumetric ratio energy of battery package.

In the description herein, references to the description of "some embodiments," "other embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. A cell module, comprising:

the battery cell accommodating parts (11) are arranged on the surfaces, opposite to each other, of the module supports (1), and the battery cell accommodating parts (11) are arranged at intervals;

electric core (2), electric core (2) are a plurality of, every electric core (2) all cooperate in one in electric core accommodation portion (11): wherein:

two adjacent battery cores (2) positioned on the same surface of the module support (1) are arranged in series;

the two oppositely arranged battery cores (2) on different surfaces of the module support (1) are arranged in parallel.

2. The cell module of claim 1, wherein 2 or 3 of the cell receptacles (11) are provided on two oppositely disposed surfaces of the module carrier (1).

3. The cell module of claim 1, wherein a spacer projection (12) is provided in the module carrier (1), and the spacer projection (12) is located between two adjacent cell holders (11).

4. The cell module of claim 3, wherein the two oppositely arranged surfaces of the spacer projection (12) are each provided with a first receiving groove (121), and the first receiving grooves (121) are used for receiving tabs of the cells (2).

5. The cell module of claim 4, wherein the spacing protrusion (12) is further provided with a mounting groove (122), and the mounting groove (122) is communicated with the two first accommodating grooves (121);

the battery cell module further comprises a serial-parallel junction piece (3), the serial-parallel junction piece (3) is matched in the mounting groove (122), and the serial-parallel junction piece (3) is used for connecting two adjacent battery cells (2) in series and is used for connecting two battery cells (2) which are oppositely arranged in parallel.

6. The cell module of claim 1, wherein the module support (1) is provided with a stop protrusion (13) at each of two ends thereof, and the stop protrusion (13) is provided with a second receiving groove (131) on each of two oppositely disposed surfaces thereof, and the second receiving groove (131) is used for receiving a tab of the cell (2).

7. The cell module of claim 6, further comprising a parallel junction (4), the parallel junction (4) being fitted in the second accommodation groove (131), the parallel junction (4) being configured to connect two of the cells (2) in parallel and arranged opposite to each other.

8. The cell module of claim 7, wherein the parallel busbar member (4) is a U-shaped busbar member, and two flat plate portions of the U-shaped busbar member are respectively fitted in the two second receiving grooves (131).

9. A battery pack, comprising:

a case (100);

the cell module of any one of claims 1 to 8, which is a plurality of the cell modules, the plurality of the cell modules being fitted side by side in the casing (100);

a total positive busbar (200), the total positive busbar (200) being configured to connect positive terminals of a plurality of the cell modules;

the battery cell module comprises a total negative bus bar (300), wherein the total negative bus bar (300) is used for connecting the negative ends of the battery cell modules.

10. The battery pack according to claim 9, wherein a plurality of third accommodating grooves (110) are formed in the box body (100), and each third accommodating groove (110) is used for accommodating one cell module;

the battery cell module comprises a protective shell (400) and a plurality of battery cell modules, and the battery cell modules are arranged in the protective shell (400) in parallel.