CN214336821U

CN214336821U - Lithium battery module for communication

Info

Publication number: CN214336821U
Application number: CN202023141582.5U
Authority: CN
Inventors: 戈志敏; 熊刚庭; 陈�基; 朱丹; 黄文杰; 曹锡仪
Original assignee: Jiangxi Ganfeng Lienergy Technology Co Ltd
Current assignee: Jiangxi Ganfeng Lienergy Technology Co Ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-10-01
Anticipated expiration: 2030-12-23

Abstract

The utility model discloses a lithium battery module for communication, which relates to the technical field of energy storage batteries and comprises two end brackets, and at least two battery cores and a connecting bracket which are arranged between the end brackets, wherein the number of the battery cores is at least two and are arranged in a stacking way in sequence, and the connecting bracket is arranged between the adjacent battery cores; the connecting support comprises a frame main body and a first limiting block, the first limiting block is arranged on the side wall of the frame main body and protrudes towards the direction perpendicular to the frame main body, the frame main body is arranged between the adjacent electric cores, and the first limiting block is located on the outer side of the electric cores and is abutted against the side wall of the electric cores so as to limit the electric cores to move outwards. The utility model has the advantages that the whole module forms a whole by installing the connecting bracket between the electric cores, thereby greatly improving the structural strength of the module; and the connecting support is of a frame structure with an opening in the middle, and a battery cell expansion gap is reserved in the opening part in the middle, so that the safety performance of the battery module can be improved.

Description

Lithium battery module for communication

Technical Field

The utility model relates to an energy storage battery technical field, concretely relates to lithium battery module for communication.

Background

As a new clean energy, the lithium ion power battery has the advantages of high energy density, good safety, light weight, long cycle life and the like, and is widely applied to new energy storage systems. Especially in the field of communication energy storage, lithium ion power batteries have become the preferred battery type.

The existing square energy storage battery module structure is characterized in that an end (aluminum) plate, a side (aluminum) plate, an end insulating plate, a side insulating plate and a battery cell are directly attached and extruded to be grouped, then CMT welding is carried out to be grouped, and finally a busbar laser welding busbar is carried out to complete assembly. The structure can not solve the problem that the welding position of the end plate and the side plate is torn due to the influence caused by thermal expansion after charging and discharging; and the plastic isolation plate and the upper cover cannot be used commonly, resulting in increased product cost.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a communication is with lithium battery module, can improve the structural strength of module.

The technical solution of the utility model is as follows:

a lithium battery module for communication comprises two end supports, and at least two battery cores and connecting supports, wherein the battery cores and the connecting supports are arranged between the end supports; the connecting support comprises a frame main body and a first limiting block, the first limiting block is arranged on the side wall of the frame main body and protrudes towards the direction perpendicular to the frame main body, the frame main body is arranged between the battery cores, and the first limiting block is located on the outer side of the battery cores and abutted against the side wall of the battery cores so as to limit the battery cores to move outwards.

The utility model discloses a concrete embodiment, the end support includes end support main part and second stopper, the second stopper sets up on the lateral wall of end support main part and is close to towards the direction protrusion of electric core, the second stopper is located the outside of electric core and with electric core lateral wall looks butt in order to restrict electric core outwards moving.

The utility model discloses a concrete implementation way, the position of first stopper and second stopper is corresponding.

The utility model discloses a concrete implementation mode, the quantity of first stopper and second stopper is four and sets up respectively on four angles of frame main part and end support main part.

The utility model discloses a concrete implementation mode still includes the end plate, the end plate sets up the one side of keeping away from electric core at the end support, it is protruding to be provided with the location on the lateral wall that the end support is close to the end plate, be provided with the locating hole that matches with the location arch on the end plate.

The utility model discloses a concrete implementation mode still is including being used for fixing the ribbon of electricity core, be provided with the outside positioning groove of opening on the relative lateral wall of end plate, the ribbon is installed in the positioning groove.

The utility model discloses a concrete implementation mode still is in including setting up the insulating top cap on end support and electric core top, insulating top cap installs on the end support.

The utility model discloses a concrete implementation mode, the both ends of insulating top cap are provided with the extension, be provided with first mounting hole on the extension, the second mounting hole that matches with first mounting hole is seted up at the end support top, insulating top cap is installed through a fastener in first mounting hole and the second mounting hole and fix at the end support.

The utility model discloses a concrete implementation mode, frame main part upper end still is provided with two through wires holes and an opening recess outwards, the through wires hole sets up the both ends of recess.

The utility model discloses a concrete implementation mode, frame main part upper end still is provided with two bellyings up, form between the bellyings the recess, the through wires hole sets up on the bellyings.

The utility model has at least one of the following beneficial effects

The utility model has the advantages that the whole module forms a whole by installing the connecting support between the battery cores, thereby greatly improving the structural strength of the module and meeting the requirements of the industry standard YD/T2344.1-2011 on vibration; and the connecting support is of a frame structure with an opening in the middle, and a battery cell expansion gap is reserved in the opening part in the middle, so that the safety performance of the battery module can be improved. The utility model discloses at electric core top installation insulating top cap, improved the security performance of module. The battery cell is bound tightly by the binding belt, and the cycle life of the battery cell can be prolonged by applying pretightening force to the battery cell; the aluminum bar can be mounted on the battery cell 5 through screws or laser welding, and the mounting is convenient. The end bracket and the connecting bracket use extremely simplified designs, and the product cost is greatly reduced.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic diagram of an explosive structure in the present invention;

FIG. 3 is a schematic structural view of the connecting bracket of the present invention;

fig. 4 is a schematic structural view of an end bracket of the present invention;

the following are marked in the figure: 11. an end plate; 111. positioning holes; 112. a positioning groove; 12. an end bracket; 121. an end bracket body; 122. a second limiting block; 123. positioning the projection; 124. a second mounting hole; 13. connecting a bracket; 131. a frame body; 132. a first stopper; 133. threading holes; 134. a groove; 14. an insulating top cover; 141. a first mounting hole; 15. an electric core; 16. aluminum bars; 17. binding a belt; 18. a fastener.

Detailed Description

The present invention will be described in further detail with reference to the following specific examples, but the present invention is not limited to the following specific examples.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being 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, the terms "first", "second", etc. 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," "second," etc. may explicitly or implicitly include one or more of that feature. 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 by those of ordinary skill in the art through specific situations.

As shown in fig. 1 to 4, the present embodiment provides a lithium battery module for communication, which includes two end plates 11, two end brackets 12, a connecting bracket 13, an insulating top cover 14, at least two battery cells 15, an aluminum bar 16 and a ribbon 17, where the two end brackets 12 are disposed oppositely, the two end plates 11 are disposed outside the end brackets 12 respectively, the battery cells 15 are stacked in sequence and located between the end brackets 12, and the connecting bracket 13 is disposed between the adjacent battery cells 15, so in the present embodiment, the number of the connecting brackets 13 is one less than that of the battery cells 15. The aluminum bar 16 is used for connecting adjacent battery cells 15 to realize electric conduction between the battery cells 15, and specifically, one end of the aluminum bar 16 is welded or mounted on the positive electrode of the battery cell through a screw, and the other end of the aluminum bar is welded or mounted on the negative electrode of the adjacent battery cell through a screw.

The connecting bracket 13 includes a frame main body 131 and a first limiting block 132, in this embodiment, the frame main body 131 is a square frame structure, the first limiting block 132 is disposed on a side wall of the frame main body 131 and protrudes in a direction perpendicular to the frame main body 131, that is, protrudes in a cell direction, so as to form an accommodating cavity together with the frame main body 131, the frame main body 131 is located between adjacent cells 15, and the first limiting block 132 is located outside the cells 15 and abuts against a side wall of the cells 15 to limit outward movement of the cells 15. In this embodiment, the quantity of first stopper 132 is four and sets up respectively on four angles of frame main part 131 to can the cladding around electric core 15, prevent electric core 15 lateral shifting, improve the structural strength of battery module, simultaneously, linking bridge 13 is frame construction, frame construction's mid portion opening, thereby has reserved electric core inflation clearance, can increase the security performance of battery module. Frame main part 131 upper end still is provided with two through wires holes 133 and an opening recess 134 outwards, through wires holes 133 sets up the both ends of recess 134, in this embodiment, frame main part 131 upper end still is provided with two bellying up, form between the bellying recess 134, through wires holes 133 sets up on the bellying, can install the communication electric wire through recess 134 to utilize fixed rope etc. to pass through wires holes 133 and can fix the communication electric wire in recess 134.

The end bracket 12 includes an end bracket main body 121 and a second limiting block 122, the second limiting block 122 is disposed on the sidewall of the end bracket main body 121 and protrudes toward the direction close to the battery cell 15, and the second limiting block 122 is located outside the battery cell 15 and abuts against the sidewall of the battery cell 15 to limit the outward movement of the battery cell 15. In this embodiment, the number of the second limiting blocks 122 is four, and the second limiting blocks are respectively disposed at four corners of the end bracket main body 121 and correspond to the position of the first limiting block 132, and the battery cell 15 at the two end edges is further fixed by the end bracket 12, so that the battery cell 15 is prevented from moving laterally, and the structural strength of the battery module is improved.

The end plate 11 is disposed on one side of the end support 12 far away from the electric core 15, the side wall of the end support 12 close to the end plate 11 is provided with a positioning protrusion 123, the end plate 11 is provided with a positioning hole 111 matched with the positioning protrusion 123, in this embodiment, the number of the positioning protrusions 123 and the positioning holes 111 is four, so that the positioning and installation of the end plate 11 and the end support 12 are realized through the cooperation of the positioning protrusions 123 and the positioning holes 111.

The ribbon 17 is used for fixing the end plate 11, the end bracket 12, the connecting bracket 13 and the battery core 15 to form a battery module, positioning grooves 112 with outward openings are formed in opposite side walls of the end plate 11, and the ribbon 17 is installed in the positioning grooves 112 along the direction perpendicular to the battery core 15 so as to fix the battery core 15 stacked to form the battery module.

The insulating top cover 14 is arranged at the top ends of the end support 12, the battery cell 15 and the connecting support 13, downward protrusions are arranged on the periphery of the insulating top cover 14, and the protrusions are located on the outer sides of the end support 12 and the connecting support 13 to cover the end support 12, the connecting support 13 and the battery cell 15. In this embodiment, the two ends of the insulating top cap 14 are provided with extending portions, the extending portions are provided with first mounting holes 141, the top of the end bracket 12 is provided with second mounting holes 124 matched with the first mounting holes 141, the insulating top cap 14 is mounted on the end bracket 12 by mounting a fastener 18 in the first mounting holes 141 and the second mounting holes 124, in this embodiment, the fastener 18 is a screw, and the first mounting holes 141 and the second mounting holes 124 are screw holes.

In this embodiment, the height of the module is 147mm, so that the module can be applied to 4U and 5U standard cabinets in mainstream in the communication industry.

The assembly method of the battery module in the embodiment comprises the following steps: the battery cores 15 and the connecting supports 13 are installed in a matched mode, the battery cores 15 are stacked in a series-parallel connection mode according to requirements, the frame main body 131 is located between the adjacent battery cores 15, and the first limiting block 132 is located on the outer side of each battery core 15 and is abutted to the side wall of each battery core 15; end brackets 12 are arranged at two ends of the battery cell 15 positioned at the outermost side, and end plates 11 are arranged outside the end brackets 12; after the stacking is finished, the end plates 11, the end brackets 12, the battery cores 15 and the connecting brackets 13 are tightly bound by using the binding belts 17; placing an aluminum bar 16 between the adjacent electric cores 15, welding one end of the aluminum bar 16 on the anode of the electric core 15 by laser welding, and welding the other end on the cathode of the adjacent electric core 15; finally, an insulating top cover 14 is mounted on the top end of the battery cell 15, and the insulating top cover 14 is fixed on the end bracket 12 by a fastener 18.

The utility model, by installing the connecting support 13 between the battery cores 15, the whole module forms a whole, thereby greatly improving the structural strength of the module and meeting the vibration requirement of the industry standard YD/T2344.1-2011; the connecting support 13 is of a frame structure with an opening in the middle, and a cell expansion gap is reserved in the middle opening part, so that the safety performance of the module can be improved; the utility model discloses install insulating top cap on electric core top, improved the security performance of module; the battery cell 15 is tightly bound through the binding belt 17, and the cycle life of the battery cell can be prolonged by applying pretightening force to the battery cell 15; the aluminum bar 16 can be mounted on the battery cell 15 through screws or laser welding, and the mounting is convenient. The end bracket 12 and the connecting bracket 13 use a very simplified design, greatly reducing the product cost.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The lithium battery module for communication is characterized by comprising two oppositely arranged end supports (12), and at least two battery cores (15) and connecting supports (13) which are arranged between the end supports (12), wherein the number of the battery cores (15) is at least two, the battery cores are sequentially arranged in a stacked manner, and the connecting supports (13) are arranged between the adjacent battery cores (15); the connecting support (13) comprises a frame main body (131) and a first limiting block (132), the first limiting block (132) is arranged on the side wall of the frame main body (131) and protrudes towards the direction perpendicular to the frame main body (131), the frame main body (131) is arranged between the adjacent electric cores (15), and the first limiting block (132) is located on the outer side of the electric cores (15) and is abutted against the side wall of the electric cores (15) to limit the outward movement of the electric cores (15).

2. The lithium battery module for communication as recited in claim 1, wherein the end bracket (12) comprises an end bracket main body (121) and a second limiting block (122), the second limiting block (122) is disposed on a side wall of the end bracket main body (121) and protrudes toward a direction close to the battery cell (15), and the second limiting block (122) is located outside the battery cell (15) and abuts against a side wall of the battery cell (15) to limit outward movement of the battery cell (15).

3. The lithium battery module for communication as recited in claim 2, wherein the first stopper (132) and the second stopper (122) are located in a corresponding manner.

4. The lithium battery module for communication as claimed in claim 2, wherein the first stopper (132) and the second stopper (122) are four in number and are respectively disposed at four corners of the frame main body (131) and the end bracket main body (121).

5. The lithium battery module for communication according to claim 2, further comprising an end plate (11), wherein the end plate (11) is disposed on a side of the end bracket (12) away from the battery core (15), a positioning protrusion (123) is disposed on a side wall of the end bracket (12) close to the end plate (11), and a positioning hole (111) matched with the positioning protrusion (123) is disposed on the end plate (11).

6. The lithium battery module for communication as recited in claim 5, further comprising bands (17) for fixing the battery cells (15), wherein positioning grooves (112) with outward openings are formed on opposite sidewalls of the end plates (11), and the bands (17) are installed in the positioning grooves (112).

7. The lithium battery module for communication as recited in claim 1, further comprising an insulating top cover (14) disposed on top of the end bracket (12) and the battery cell (15), wherein the insulating top cover (14) is mounted on the end bracket (12).

8. The lithium battery module for communication as recited in claim 7, wherein the two ends of the insulating top cover (14) are provided with extension parts, the extension parts are provided with first mounting holes (141), the top of the end bracket (12) is provided with second mounting holes (124) matching with the first mounting holes (141), and the insulating top cover (14) is fixed on the end bracket (12) by being mounted in the first mounting holes (141) and the second mounting holes (124) through a fastener (18).

9. The lithium battery module for communication as claimed in claim 1, wherein the frame body (131) is further provided at an upper end thereof with two threading holes (133) and a groove (134) with an outward opening, the threading holes (133) being disposed at both ends of the groove (134).

10. The lithium battery module for communication as claimed in claim 9, wherein the frame body (131) is further provided at an upper end thereof with two upwardly-facing protrusions, the grooves (134) are formed between the protrusions, and the threading holes (133) are formed on the protrusions.