CN214227026U

CN214227026U - Battery module

Info

Publication number: CN214227026U
Application number: CN202120173325.5U
Authority: CN
Inventors: 张宏飞; 付垚; 李文俊; 李永伟
Original assignee: Beijing WeLion New Energy Technology Co ltd
Current assignee: Beijing WeLion New Energy Technology Co ltd
Priority date: 2021-01-21
Filing date: 2021-01-21
Publication date: 2021-09-17
Anticipated expiration: 2031-01-21

Abstract

The utility model relates to the technical field of batteries, in particular to a battery module, which comprises at least one battery frame component, and can be arranged in a base or a battery box body; the battery frame assembly comprises a main body with an inner cavity and a plurality of battery cells arranged in the inner cavity, and a barrier piece is arranged between every two adjacent battery cells; the battery frame component of the utility model can be directly arranged in the battery box body, or a plurality of battery frame components can be arranged on the base side by side and then arranged in the battery box body through the base, and the structures of various quantity forms can be combined at will, thereby improving the grouping efficiency and the volume utilization rate in the battery box body; and this battery frame subassembly is including the main part that has the inner chamber, and a plurality of electricity core is put into in the main part, and the lateral wall of main part can provide the binding power to electric core, guarantees single battery frame subassembly's structural stability.

Description

Battery module

Technical Field

The utility model relates to a battery technology field, especially a battery module.

Background

With the increasing severity of energy and environmental problems, countries around the world have increased the research and development efforts on new energy vehicles. The power battery is an important component of the electric vehicle, and the research on the power battery is imperative. Soft packet of power battery is relatively poor because self protection, when the battery system was constituteed to the event, need increase the intermediate structure and support, fix, connect in order to form the battery module, the safety of guarantee battery, current battery module structural design is not good however, can't satisfy the market demand in reliability and security, causes the problem that battery efficiency in groups descends moreover easily.

SUMMERY OF THE UTILITY MODEL

For solving the above-mentioned problem that exists among the prior art, the utility model provides a battery module can make up the structure of multiple quantity form wantonly, improves efficiency in groups, guarantees to connect the reliability.

In order to solve the technical problem, the utility model adopts the following technical scheme: a battery module, comprising: at least one battery frame assembly mountable to the base or the battery box; the battery frame assembly comprises a main body with an inner cavity and a plurality of battery cores arranged in the inner cavity, and a blocking piece is arranged between every two adjacent battery cores.

Further, the battery frame assembly further comprises a plug, the main body is integrally formed and two ends of the main body are open, the battery cores are separated by the blocking pieces and are placed in the inner cavity, and the plug is used for plugging the two open ends of the main body.

Furthermore, the plug is insulated and isolated from the pole lug of the battery cell.

Further, the main part includes two lids, at least one the lid has the cavity that can hold electric core, two lid closes the connection mutually and passes through welded fastening, or two but the connection face between the lid all is provided with the sawtooth connection structure of lock.

Further, the main body is made of a metal material, a carbon fiber material or a glass fiber material.

Further, the barrier is foam or aerogel.

Furthermore, the battery frame assembly is provided with a plurality of battery frame assemblies which are arranged on the base side by side, and the plurality of battery frame assemblies are arranged in the battery box body through the base.

Furthermore, the battery frame assembly is provided with a plurality of battery frame assemblies, and the upper ends of the plurality of battery frame assemblies are respectively and fixedly connected with the pressing assembly.

Furthermore, the upper ends of the plurality of battery frame assemblies are fixedly arranged on the upper end surface of the battery box body through the pressing assembly, and/or the lower ends of the plurality of battery frame assemblies are fixedly arranged on the base or the lower end surface of the battery box body.

Furthermore, the pressing assembly comprises two pressing strips, and the two pressing strips are used for fixing two ends of the battery frame assembly respectively.

The utility model discloses mainly have following beneficial effect: the battery frame component of the utility model can be directly arranged in the battery box body, or a plurality of battery frame components can be arranged on the base side by side and then arranged in the battery box body through the base, and the structures of various quantity forms can be combined at will, thereby improving the grouping efficiency and the volume utilization rate in the battery box body; and this battery frame subassembly is including the main part that has the inner chamber, and a plurality of electricity core is put into in the main part, and the lateral wall of main part can provide the binding power to electric core, guarantees single battery frame subassembly's structural stability.

Drawings

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

fig. 2 is an assembly view of a battery module according to an embodiment of the present invention;

fig. 3 is an assembly schematic of some embodiments of the battery frame assembly of the present invention;

fig. 4 is an assembly schematic of other embodiments of the battery frame assembly of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention 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 for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1 to 3, the battery module includes at least one battery frame assembly 200, where the battery frame assembly 200 may be directly and fixedly mounted in a battery box by means of bolting or fastening, and may also be disposed on a base 100, and is disposed in the battery box through the base 100, specifically, the battery frame assembly 200 includes a main body 201 having an inner cavity and a plurality of battery cells 205 disposed in the inner cavity, a blocking member 206 is disposed between two adjacent battery cells 205, and the main body 201 may be made of a metal material, a carbon fiber material, or a glass fiber material; specifically, the plurality of battery cells 205 and the blocking member 206 are arranged in the inner cavity side by side, at this time, the battery cells 205 have a certain gap in the inner cavity, the blocking member 206 with certain elasticity may be adopted to ensure that the battery cells 205 are relatively fixed in the inner cavity, specifically, the blocking member 206 may be foam or aerogel, or may be, the battery cells 205 are arranged in the inner cavity in a low state, the battery cells 205 are charged after being arranged, and in normal use, the thickness of the battery cells 205 is increased by 0.2mm to 0.3mm compared with the thickness in the low state, so as to ensure that the battery cells 205 are relatively fixed in the inner cavity, and meanwhile, due to the elastic blocking member 206 or the battery cells 205 expand by themselves, the side walls of the main body 201 are squeezed, so that the reaction force of the main body 201 on the battery cells 205 is enough to provide a proper binding force on the battery cells 205.

In some embodiments, as shown with reference to fig. 3, the battery frame assembly 200 further includes a plug 202, in this embodiment, the main body 201 is integrally formed, and two ends of the main body are open, the battery cell 205 and the blocking member 206 can be placed into the inner cavity from one or two ends of the main body 201 that are open, and then the inner cavity is sealed by the plug 202, so as to complete the assembly of the battery frame assembly 200, the plugs 202 are made of insulating materials to ensure the insulation between the main body 201 and the battery tabs, or the surface of the plug 202 is coated with a layer of insulating materials, the purpose of the insulating isolation is to ensure that the main body 201 and the tabs of the battery cell 205 are isolated, the plugs 202 can be fixedly mounted at the two open ends of the main body 201 by means of threaded connection or fastening connection, and the plug 202 has a mounting hole for matching with the base 100 or the pressing assembly, that is, the body 201 is mounted on the base 100 or the pressing assembly through the fixed connection between the plug 202 and the base 100 or the pressing assembly.

In some embodiments, referring to fig. 4, the illustrated main body 201 includes two cover bodies 203 that can be covered relatively, and at least one of the cover bodies 203 has a cavity capable of accommodating the battery cell 205, and a plurality of battery cells 205 and the blocking member 206 are sequentially placed in the cavity, and then the two cover bodies 203 are covered and connected to form a whole by laser welding, so as to ensure structural stability of the whole battery frame assembly 200, in this embodiment, a connection surface between the two cover bodies 203 may be a plane or a tooth surface that can be separated up and down; in other embodiments, the connection surfaces between the two illustrated covers 203 are provided with saw tooth connection structures 204 that can be fastened, in a specific installation, one of the covers 203 is placed on a horizontal plane, the plurality of battery cells 205 and the blocking members 206 are sequentially stacked in the cover 203, the other cover 203 is arranged on the cover 203 in a staggered manner, and the cover moves horizontally to enable the saw tooth connection structures 204 between the two covers to be matched with the saw teeth for alignment assembly, and finally, the two covers 203 can be further fixed by welding.

In some embodiments, referring to fig. 1 and 2, a plurality of battery frame assemblies 200 are provided, and the lower ends of the plurality of battery frame assemblies 200 may be mounted on the base 100 side by riveting, screwing, or fastening, and the upper ends of the battery frame assemblies 200 may be fixed by a pressing assembly, so as to ensure that the adjacent battery frame assemblies 200 are relatively fixed, while in other embodiments, the battery frame assemblies 200 may be mounted in the battery box body separately, or the battery frame assemblies 200 may be mounted on the lower end surface of the battery box body by the base 100, or the upper ends of the battery frame assemblies 200 may be hung on the upper end surface of the battery box body by a pressing assembly, and further the upper ends and the lower ends of the battery frame assemblies 200 are fixedly connected with the battery box body, so as to ensure the grouping efficiency and the stability of the battery frame assemblies 200 in the battery box body, the fixing point between the battery frame assembly 200 and the battery box body can be reduced, and the space of the fixing point is reduced; the PCB 300 is arranged at two ends of the battery frame assembly 200, the PCB 300 is electrically connected with the positive electrode and the negative electrode of the battery frame assembly 200, the voltage condition of the battery cell is collected through the PCB 300, a slot matched with the copper bar 400 is reserved on the PCB 300, the copper bar 400 is electrically connected with the PCB 300 in a nickel sheet laser welding or aluminum wire welding mode and is embedded in the slot, and the positive electrode and the negative electrode of the battery module are led out through the copper bar 400.

In some embodiments, as shown in fig. 1 and 2, the battery module further includes insulating protection plates 500 disposed on the base 100 corresponding to both ends of the PCB 300, and the insulating protection plates 500 may be mounted on the base 100 by means of a screw connection or a snap connection.

In some embodiments, referring to fig. 1 and 2, the pressing assembly includes two pressing strips 600, the two pressing strips 600 respectively fix two ends of the plurality of battery frame assemblies 200, the pressing strips 600 may be fixed at the upper end of the plugs 202 through threaded connection, and press the fixing bodies 201 through the plugs 202, so as to ensure the connection stability of the plurality of battery frame assemblies 200 and the base 100.

In some embodiments, two be provided with on the layering 600 with battery box matched with mounting structure, it needs to explain, the utility model discloses a battery module wants fixed mounting in the battery box, it can be through the mounting structure installation on two layering 600, also can install in the battery box through base 100, in this embodiment, this mounting structure can be a plurality of threaded connection hole, accessible fixing bolt passes layering 600 and spiro union to the battery box in, and in other embodiments, this mounting structure also can be the screens, and be provided with in the battery box with this screens matched with draw-in groove, and then the battery module can be through screens and battery box joint on the layering 600.

In some embodiments, the base 100 is a PTC heating plate profile or a water-cooling plate profile or a tray, and the base 100 is provided with a mounting structure which is matched with a battery box body, and the mounting structure can be a threaded connection hole, in this embodiment, effective fixation is formed by four corners of the base 100, so that a battery module can be stably mounted in the battery box body, and the stress of a single fixed point is reduced, thereby reducing the occupied space of the fixed point and improving the volume grouping efficiency; it should be noted that, mounting structures may also be respectively disposed at two ends of the two pressing bars 600, so that a four-corner effective fixing structure may also be formed at the upper end of the battery module.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims

1. A battery module, comprising:

at least one battery frame assembly (200) mountable to the base (100) or within the battery case;

the battery frame assembly (200) comprises a main body (201) with an inner cavity and a plurality of battery cores (205) arranged in the inner cavity, and a barrier piece (206) is arranged between every two adjacent battery cores (205).

2. The battery module according to claim 1, wherein the battery frame assembly (200) further comprises a plug (202), the main body (201) is integrally formed and open at two ends, a plurality of the battery cells (205) are separated by the barrier (206) and are placed in the inner cavity, and the plug (202) is used for plugging the open two ends of the main body (201).

3. The battery module according to claim 2, characterized in that the plug (202) is insulated from the tab of the battery cell (205).

4. The battery module according to claim 1, wherein the main body (201) comprises two covers (203), at least one of the covers (203) has a cavity capable of accommodating the battery cell (205), the two covers (203) are covered and connected with each other and fixed by welding, or the connection surface between the two covers (203) is provided with a saw-tooth connection structure (204) capable of being buckled.

5. A battery module according to any one of claims 1 to 4, characterized in that the main body (201) is made of a metal material or a carbon fiber material or a glass fiber material.

6. The battery module according to any one of claims 1 to 4, wherein the barrier (206) is foam or aerogel.

7. A battery module according to claim 1, wherein said battery frame assembly (200) is provided in a plurality and arranged side by side on said base (100), and a plurality of said battery frame assemblies (200) are mounted in a battery box body through said base (100).

8. The battery module according to claim 1, wherein the number of the battery frame assemblies (200) is several, and the upper ends of the several battery frame assemblies (200) are respectively and fixedly connected with the pressing assembly.

9. The battery module according to claim 8, wherein the upper ends of a plurality of the battery frame assemblies (200) are fixedly mounted on the upper end surface of the battery box body through the pressing assembly, and/or the lower ends of a plurality of the battery frame assemblies (200) are fixedly mounted on the base (100) or the lower end surface of the battery box body.

10. The battery module according to claim 8 or 9, wherein the pressing assembly comprises two pressing bars (600), and the two pressing bars (600) are respectively fixed at two ends of a plurality of battery frame assemblies (200).