CN217656029U

CN217656029U - Battery PACK PACK assembling balance performance arrangement structure

Info

Publication number: CN217656029U
Application number: CN202221579254.XU
Authority: CN
Inventors: 毕文进; 黄小飞
Original assignee: Hangzhou Maikefurui Technology Co ltd
Current assignee: Hangzhou Maikefurui Technology Co ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2022-10-25
Anticipated expiration: 2032-06-22

Abstract

The utility model discloses a group battery PACK equipment balance ability arrangement structure, including a plurality of batteries, a plurality of connection nickel piece, it is a plurality of the battery paste each other and tightly arrange into the group battery, the group battery including connecting the top surface, connecting the bottom surface, connection top surface, connect in the bottom surface arbitrary four anodal and negative pole's of battery that form 2x2 square quantity ratio be 1:3 or 2:2 or 3:1; the connecting nickel sheets comprise a square shape and a 7-shaped shape, the connecting nickel sheets are respectively connected with the positive electrodes or the negative electrodes of the four batteries on the connecting top surface and the connecting bottom surface of the battery pack, the four batteries connected with the 7-shaped connecting nickel sheets have an arrangement structure of the positive electrodes and the negative electrodes, and the arrangement structure of the positive electrodes and the negative electrodes is a positive electrode, a negative electrode, a positive electrode or a negative electrode, a positive electrode and a negative electrode from one end to the other end. The utility model discloses make the uniformity of joining in marriage group in order to guarantee whole group battery of battery when PACK assembles in earlier stage, the later stage does not destroy the uniformity of group battery and guarantees life-span and the reliability of battery.

Description

Battery PACK PACK assembling balance performance arrangement structure

Technical Field

The utility model relates to a group battery technical field specifically is a balanced performance arrangement structure of group battery PACK equipment.

Background

At present, battery packs are generally adopted as power sources for electric bicycles, electric motorcycles and the like, the suitability of batteries in distribution is not considered in the design of mainstream battery packs for bicycles, so that during later-stage PAKC assembly, when a plurality of strings of batteries are connected in series, particularly when a plurality of parallel (more than 2) batteries are connected in series, only narrow and thin nickel sheets are connected, the nickel sheets are overloaded and quickly heated when the batteries are discharged under heavy current, certain potential safety hazards exist, the problem that the overcurrent capacity is weak due to large local resistance of a single node, and the voltage drop of the batteries of the series nodes is obviously higher than other voltages is also caused, according to a discharging curve of the batteries, when the residual charge quantity of the battery packs is less, the voltage drop of the battery cells of the nodes is more obvious in the working state of the same current; according to the protection measures of the BMS, when the single node (the series connection point cell group) reaches the protection condition (if the BMS sets the single-node discharge cutoff voltage to be 3.0V), the battery BMS can cut off the discharge of the whole battery pack. This creates a risk for safe assembly and use of the battery pack.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a make the uniformity of group in order to guarantee whole group battery of battery when PACK equipment in earlier stage, the later stage does not destroy the uniformity of group battery and guarantees the life-span of battery and the group battery PACK equipment balance performance arrangement structure of reliability.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a balanced performance arrangement structure of group battery PACK equipment, includes a plurality of batteries, a plurality of connection nickel piece, the battery both ends be positive pole, negative pole respectively, it is a plurality of the battery paste each other and tightly arrange into the group battery, the group battery include three horizontal row, three column at least, the group battery including connecting the top surface, connecting the bottom surface, the connection top surface, connect in the bottom surface arbitrary four anodal and the negative pole that form the battery of 2x2 square the quantity ratio be 1:3 or 2:2 or 3:1; the connecting nickel sheets comprise a square shape and a 7-shaped shape, the connecting nickel sheets are respectively connected with the positive electrodes or the negative electrodes of the four batteries on the connecting top surface and the connecting bottom surface of the battery pack, the connecting nickel sheets comprise the positive electrodes of the two batteries and the negative electrodes of the two batteries, and the connecting nickel sheets positioned on the two side edges of the battery pack are electrically connected with an external device; the arrangement structure of the positive electrode and the negative electrode of the four batteries connected by the 7-shaped connecting nickel sheet is a positive electrode, a negative electrode, a positive electrode or a negative electrode, a positive electrode and a negative electrode from one end to the other end.

In the scheme, a distributed arrangement method is provided, which is characterized in that the problem that the existing battery is caused by appearance and space reasons is solved, the matching of the battery cells is made during the early-stage PACK assembly so as to ensure the consistency of the whole battery PACK, and the sorting and matching work which is made in the early stage so as to ensure the service life and the reliability of the battery is destroyed when the battery cells are serially connected during the later-stage PACK assembly due to the appearance and the space reasons, so that the phenomenon that the current of a nickel sheet is overloaded and rapidly heated due to large-current discharge in the PACK assembly process is avoided, and the safety and the reliability of the battery are ensured; when the battery is arranged in the normal position, the balance performance of the discharge capacity of the whole circuit is damaged because the current generated by the parallel arrangement of a plurality of cell cells is transmitted to the next time through the single-path current, which is shown in the following that firstly, the anodes of any four batteries forming a 2x2 square are positioned on the same surface, and secondly, the arrangement structure of the four batteries connected by the 7-shaped connecting nickel sheet from the head to the tail is a positive electrode, a negative electrode or a negative electrode, a positive electrode and a positive electrode, so that the current direction is single on the 7-shaped connecting nickel sheet, namely, the current flowing from the positive electrode and the positive electrode to the negative electrode and the negative electrode is weak and large in resistance and has the risk of overload and overheating under the condition that the connecting nickel sheet is thin and narrow, the scheme achieves the actual one-to-one current transmission from the last cell connected in series and parallel to the next cell in series and parallel by changing the arrangement position of the single-cell, and is shown in that the number ratio of the positive electrode and the negative electrode of the four batteries forming the 2x2 square is 1:3 or 2:2 or 3:1, and the other is four batteries connected by 7-shaped connecting nickel sheets, the arrangement structure of the positive electrode and the negative electrode is a positive electrode, a negative electrode, a positive electrode or a negative electrode, a positive electrode and a negative electrode from one end to the other end, namely, two current flowing directions are arranged on one 7-shaped connecting nickel sheet, the current trend is the same as that of other series connection, and the overcurrent capacity is the same.

As the utility model discloses preferred scheme, the group battery be equipped with the battery mount, the battery mount be equipped with the fixed frame of a plurality of monocells.

As the utility model discloses preferred scheme, the group battery be equipped with 20 batteries, the group battery include three horizontal row, seven columns, the side column of group battery one side set up 2 positive poles, the negative pole is located the first side battery of same side, the group battery in the side column that is located first side battery diagonal angle set up 2 polarity and the opposite second side battery of first side battery, 2 second side battery connect mouthful style of calligraphy respectively and connect the nickel piece, this mouthful style of calligraphy is connected the nickel piece and is connected with the external device electricity respectively. The mainstream arrangement rule of the electric bicycle is that 10 strings and 13 strings of multicellular units are connected in parallel (2-8 parallel connection), the connection between the electric core and the electric core is connected in parallel and in series through nickel sheets, the battery pack adopts two types of connection nickel sheets in a shape of Chinese character 'kou' and a shape of Chinese character '7', the shape of Chinese character '7' in the middle of the battery pack is connected with four batteries connected by the nickel sheets, the ratio of the positive electrode to the negative electrode is 2:2, particularly 2 first side batteries and 2 second side batteries which are positioned at two sides of the battery pack are respectively connected with the nickel sheets in the shape of Chinese character 'kou' and are electrically connected with an external device.

As the preferable scheme of the utility model, the battery is a ternary lithium ion battery.

As the preferable proposal of the utility model, the thickness of the connecting nickel sheet is 0.1 to 0.2 mm, and the width of the connecting nickel sheet is 6 to 8 mm.

As the preferred scheme of the utility model, the group battery be electric bicycle group battery or electric motorcycle car group battery. The product of the scheme can be applied to electric bicycles or electric motorcycles.

Compared with the prior art, the beneficial effects of the utility model are that: the matching of the batteries is well done during the early-stage PACK assembly so as to ensure the consistency of the whole battery PACK, and the service life and the reliability of the batteries are ensured without damaging the consistency of the battery PACK in the later stage.

Drawings

Fig. 1 is a schematic diagram of a connection top surface cell distribution structure of a conventional battery pack.

Fig. 2 is a diagram of the connection structure and current trend of the battery of fig. 1.

Fig. 3 is a schematic diagram of a distribution structure of cells connected to the bottom surface of a conventional battery pack.

Fig. 4 is a diagram illustrating the connection structure and current trend of the battery of fig. 3.

Fig. 5 is a schematic diagram of a distribution structure of top surface batteries of the battery pack of the present invention.

Fig. 6 is a diagram of the connection structure and current trend of the battery of fig. 5.

Fig. 7 is a schematic diagram of a distribution structure of bottom-surface-connected batteries of the battery pack of the present invention.

Fig. 8 is a diagram of the connection structure and current trend of the battery of fig. 7.

In the figure: 1. battery 2, connection nickel sheet 3, group battery

4. A battery holder 31, a first side battery 32 and a second side battery.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Unlike the prior art battery structure and current trend diagram of fig. 1-4, please refer to fig. 5-8, the present invention provides a technical solution:

the utility model provides a balanced performance arrangement structure of group battery PACK equipment, includes a plurality of batteries 1, a plurality of

connection nickel piece

2, and 1 both ends of battery are anodal, negative pole respectively, and a plurality of batteries paste each other and tightly arrange into group battery 3, and group battery 3 includes three horizontal row, three column at least, and group battery 3 is including connecting the top surface, connecting the bottom surface, connects in the top surface, the connection bottom surface arbitrary four anodal and the quantity ratio of negative pole that form 2x2 square battery 1 to be 1:3 or 2:2 or 3:1; the connecting nickel sheets 2 comprise a square shape and a 7-shaped shape, the connecting nickel sheets 2 are respectively connected with the positive electrodes or the negative electrodes of the four batteries 1 on the connecting top surface and the connecting bottom surface of the battery pack 3, wherein the connecting nickel sheets comprise the positive electrodes of the two batteries 1 and the negative electrodes of the two batteries 1, and the connecting nickel sheets 2 positioned on the two side edges of the battery pack 3 are electrically connected with an external device; the arrangement structure of the positive pole and the negative pole of the four batteries connected by the 7-shaped connecting nickel sheet 2 is a positive pole, a negative pole, a positive pole or a negative pole, a positive pole and a negative pole from one end to the other end.

The battery pack 3 is provided with a battery holder 4, and the battery holder 4 is provided with a plurality of single battery fixing frames.

The battery 1 is a ternary lithium ion battery.

The thickness of the connecting nickel sheet 2 is 0.1-0.2 mm, and the width of the connecting nickel sheet 2 is 6-8 mm.

The battery pack 3 is an electric bicycle battery pack or an electric motorcycle battery pack.

The specific using process is as follows: the battery pack 3 is provided with 20 batteries 1, the battery pack 3 comprises three transverse rows and seven longitudinal columns, the side longitudinal column at one side of the battery pack 3 is provided with 2 first side batteries 31 with anodes and cathodes positioned at the same side, the side longitudinal column positioned at the diagonal angle of the first side batteries 31 in the battery pack 3 is provided with 2

second side batteries

32,2 with the polarities opposite to the

first side batteries

31, and 2 second side batteries 32 which are respectively connected with a square connecting nickel sheet 2, and the square connecting nickel sheet 2 is respectively electrically connected with an external device;

after the battery pack 3 is assembled, the multi-path current trend of the connection nickel plate 2 in the battery pack 3 shares the pressure of the current trend of the single connection nickel plate 2, so that the load capacity of the connection nickel plate 2 completely meets the requirement of heavy current discharge, the overload phenomenon does not occur, and the quick temperature rise phenomenon of the connection nickel plate 2 can not occur without the overload current phenomenon of the connection nickel plate 2 between the batteries 1.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a balanced performance arrangement structure of group battery PACK equipment, includes a plurality of batteries, a plurality of connection nickel piece, its characterized in that: the battery both ends be anodal, negative pole respectively, a plurality of the battery paste closely each other and arrange into the group battery, the group battery include three horizontal row, three column at least, the group battery including connecting the top surface, connecting the bottom surface, the connection top surface, connect in the bottom surface arbitrary four anodal and the negative pole that form the battery of 2x2 square the quantity ratio be 1:3 or 2:2 or 3:1;

the connecting nickel sheets comprise a square shape and a 7-shaped shape, the connecting nickel sheets are respectively connected with the positive electrodes or the negative electrodes of the four batteries on the connecting top surface and the connecting bottom surface of the battery pack, the connecting nickel sheets comprise the positive electrodes of the two batteries and the negative electrodes of the two batteries, and the connecting nickel sheets positioned on the two side edges of the battery pack are electrically connected with an external device;

the arrangement structure of the positive electrode and the negative electrode of the four batteries connected by the 7-shaped connecting nickel sheet is a positive electrode, a negative electrode, a positive electrode or a negative electrode, a positive electrode and a negative electrode from one end to the other end.

2. The battery PACK assembly balance performance arrangement structure according to claim 1, wherein: the battery pack is provided with a battery fixing frame, and the battery fixing frame is provided with a plurality of single battery fixing frames.

3. The battery PACK assembly balance performance arrangement structure of claim 1, wherein: the group battery be equipped with 20 batteries, the group battery include three row, seven columns, the side column of group battery one side set up 2 positive poles, the negative pole is located the first side battery of same face, the group battery in the side column that is located first side battery diagonal angle set up 2 polarity and the opposite second side battery of first side battery, 2 second side battery connect mouthful style of calligraphy respectively and connect the nickel piece, this mouthful style of calligraphy is connected the nickel piece and is connected with external device electricity respectively.

4. The battery PACK assembly balance performance arrangement structure of claim 1, wherein: the battery is a ternary lithium ion battery.

5. The battery PACK assembly balance performance arrangement structure according to claim 1, wherein: the thickness of the connecting nickel sheet is 0.1-0.2 mm, and the width of the connecting nickel sheet is 6-8 mm.

6. The battery PACK assembly balance performance arrangement structure of claim 1, wherein: the battery pack is an electric bicycle battery pack or an electric motorcycle battery pack.