CN204760451U - Lithium cell packaging structure and lithium cell - Google Patents

Abstract

The utility model relates to a lithium battery technology field especially relates to lithium cell packaging structure and lithium cell, and this lithium cell packaging structure is including packing the shell and setting up upper bracket, lower carriage and the PCB board in the packing shell, and the through -hole that a plurality of corresponds is all seted up to upper bracket and lower carriage, and the top of upper bracket is provided with the conducting strip, and the bottom of lower carriage is provided with down the conducting strip, and weld with last conducting strip and lower conducting strip respectively at the upper and lower both ends of PCB board. The utility model discloses a lithium cell packaging structure has abandoned the mode of tradition through the electric wire transmission, ensures that inner structure integrates, reduces because of too much circuit, leads to the damage risk of product, simultaneously, can play waterproofly, dustproof and jar -proof guard action to electric core. The utility model discloses a lithium cell includes lithium cell packaging structure, has the advantage that inner line integrated, reduces because of too much circuit, leads to the damage risk of product, simultaneously, have waterproofly, dustproof and take precautions against earthquakes.

Description

Lithium battery packaging structure and lithium battery

technical field

The utility model relates to the technical field of lithium batteries, in particular to a lithium battery packaging structure and a lithium battery.

Background technique

Lithium batteries have been widely used in portable electrical appliances such as laptops, cameras, and mobile communications due to their unique performance advantages. However, the current packaging of lithium battery packs is mainly wrapped with simple waterproof adhesive tape. In actual use, due to poor waterproof and shockproof effects, lithium battery damage is prone to occur, and the lithium battery pack circuit is lacking. The integrated setting leads to dense internal lines, and it is easy to short-circuit and damage the lines during use. In addition, there is also a lithium battery pack that is packaged by waxing, and then the waxed lithium battery pack is fixed in the battery box. This lithium battery pack has the problem of being disassembled; at the same time, the wax is flammable. When used to package a lithium battery pack, it is not conducive to the heat dissipation of the lithium battery pack, and the wax is also prone to spontaneous combustion, causing a major safety hazard to the use of the lithium battery pack; at the same time, the entire packaging of the lithium battery pack needs to be removed during the maintenance process In order to detect the specific damaged parts, maintenance is inconvenient.

Utility model content

The purpose of the utility model is to provide a lithium battery packaging structure with good waterproof and shockproof effects in view of the deficiencies in the prior art.

Another purpose of the present utility model is to provide a lithium battery with good waterproof and shockproof effects for the deficiencies of the prior art.

In order to achieve the above object, the technical solution of the present utility model is: the lithium battery packaging structure, including the packaging shell and the upper bracket, the lower bracket and the PCB board arranged in the packaging shell, the upper bracket and the lower bracket are set There are several through holes, the top of the upper bracket is provided with an upper conductive sheet, the bottom of the lower bracket is provided with a lower conductive sheet, and the upper and lower ends of the PCB board are connected with the upper conductive sheet and the lower conductive sheet respectively. sheet welding.

Preferably, the packaging shell includes an upper shell cover and a lower shell cover that are fastened and connected to each other.

Preferably, a slot is provided on the bottom periphery of the upper cover of the housing, and a flange is provided on the top circumference of the lower cover of the housing to cooperate with the slot.

Preferably, the lithium battery packaging structure further includes screws, the upper cover of the casing is provided with a screw mounting hole, the lower cover of the casing is provided with a threaded post, and the screw passes through the screw mounting hole and threaded with the threaded post connect.

Preferably, both the upper conductive sheet and the lower conductive sheet are nickel strip conductive sheets.

Preferably, a detection port is opened on the side of the packaging shell.

Preferably, a power line electrically connected to the PCB board is arranged on the outside of the packaging shell.

Preferably, several through holes are distributed in an array.

In order to achieve the above-mentioned another purpose, another technical solution of the utility model is: a lithium battery, including a lithium battery packaging structure and several battery cells, the top of the battery core is inserted into the through hole of the upper bracket and connected to the The upper conductive sheet abuts, and the bottom of the cell is inserted into the through hole of the lower bracket and abuts against the lower conductive sheet.

Preferably, a performance detection device for detecting the performance of the electric core is provided inside the packaging shell, and the performance detection device is located at the detection port.

Beneficial effects of the utility model: the lithium battery packaging structure of the utility model, when assembling, insert the top of the cell into the through hole of the upper bracket and abut against the upper conductive sheet, and insert the bottom of the cell into the gap between the lower bracket and the upper bracket The through hole corresponds to the through hole and abuts against the lower conductive sheet. Each cell is installed on one of the through holes of the upper bracket and the lower bracket. The upper conductive sheet and the lower conductive sheet replace the traditional wires to realize the alignment of the cell For current transmission, the upper and lower brackets and through-holes are used for fixed installation and placement of batteries. Finally, the packaging shell protects each component from water and dust. The lithium battery packaging structure of the utility model abandons the traditional way of transmission through wires, ensures the integration of the internal structure, and reduces the risk of product damage due to excessive lines; at the same time, it can protect the battery cells from water, dust and Shockproof protection. The lithium battery of the utility model has the advantages of integrated internal circuits, which reduces the risk of product damage due to excessive circuits; meanwhile, it has the functions of waterproof, dustproof and shockproof.

Description of drawings

Fig. 1 is a structural schematic diagram of the lithium battery packaging structure of the present invention.

Fig. 2 is a structural exploded schematic view of the lithium battery packaging structure of the present invention.

Fig. 3 is a structural schematic diagram of the casing upper cover of the lithium battery packaging structure of the present invention.

FIG. 4 is a partially enlarged schematic diagram of A in FIG. 3 .

Fig. 5 is a structural schematic diagram of the lower cover of the casing of the lithium battery packaging structure of the present invention.

FIG. 6 is a partially enlarged schematic diagram of the location B in FIG. 5 .

Fig. 7 is an exploded schematic diagram of the structure of the lithium battery of the present invention.

Reference signs include:

10—packaging shell 11—housing upper cover 12—housing lower cover

13—detection port 20—upper bracket 21—upper conductive sheet

30—lower bracket 31—lower conductive sheet 40—PCB board

50—through hole 60—power cord 70—battery core

111—card slot 112—screw mounting hole 121—flange

122—threaded post.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

It should be noted that the orientation terms such as left, right, up, down, top, and bottom in this embodiment are only relative concepts or refer to the normal use state of the product, and should not be considered as limiting sexual.

Embodiment one:

As shown in Figures 1 to 7, the lithium battery packaging structure provided by the embodiment of the present invention includes a packaging shell 10 and an upper bracket 20, a lower bracket 30 and a PCB board 40 arranged in the packaging shell 10, and the packaging shell 10 can adopt Made of fire-resistant and heat-resistant plastic, the upper bracket 20 and the lower bracket 30 are provided with several through holes 50, the top of the upper bracket 20 is provided with an upper conductive sheet 21, and the bottom of the lower bracket 30 is provided with a lower conductive sheet 31, wherein the upper conductive The sheet 21 can be attached to the top of the upper bracket 20, while the lower conductive sheet 31 can be attached to the top of the lower bracket 30. The upper conductive sheet 21 and the lower conductive sheet 31 have the same structure and both play a conductive role, and the degree of integration is high. , and is not easy to be burned, and is easy to manufacture; the upper and lower ends of the PCB board 40 can be welded with the upper conductive sheet 21 and the lower conductive sheet 31 respectively by welding wire to realize conduction. When assembling, insert the top of the cell 70 into the through hole 50 of the upper bracket 20 and abut against the upper conductive sheet 21, and insert the bottom of the cell 70 into the through hole 50 corresponding to the through hole 50 of the lower bracket 30 and the upper bracket 20 And abut against the lower conductive sheet 31, each cell 70 is correspondingly installed on one of the through holes 50 of the upper bracket 20 and the lower bracket 30, so that the setting of the upper bracket 20, the lower bracket 30 and the through hole 50 is used for The battery cell 70 is fixedly installed, wherein the upper bracket 20 fixes the top of the battery cell 70 , and the lower bracket 30 fixes the bottom of the battery cell 70 , so as to protect the battery cell 70 against shock. The upper conductive sheet 21 and the lower conductive sheet 31 replace the traditional wires to transmit current to the battery cell 70 , and finally, the packaging shell 10 protects each component from water and dust.

The lithium battery packaging structure of the utility model abandons the traditional way of transmission through wires, ensures the integration of the internal structure, and reduces the risk of product damage due to excessive lines; at the same time, it can waterproof and dustproof the battery cell 70 and shockproof protection.

In this embodiment, the packaging shell 10 includes an upper shell cover 11 and a lower shell cover 12 that are fastened and connected to each other. Specifically, a fastening connection method is adopted to facilitate assembly and disassembly of the upper cover 11 and the lower cover 12 of the housing.

Wherein, a card slot 111 is concavely formed upward on the bottom peripheral edge of the upper cover 11 of the housing (see FIG. 3 and FIG. 4 ). edge 121 (see Fig. 5 and Fig. 6), when fastening the housing upper cover 11 and the housing lower cover 12, first align the flange 121 of the housing lower cover 12 with the annular groove of the housing upper cover 11, and then align the flange The edge 121 is aligned and submerged into the groove so that the upper cover 11 of the housing is snap-fitted with the lower cover 12 of the housing. This structural design can ensure that the connection between the upper cover 11 and the lower cover 12 of the housing forms a sealed connection to play a waterproof role. Of course, waterproof glue can be further coated on the connection between the upper cover 11 and the lower cover 12 to enhance the waterproof performance of the packaging shell 10 .

In addition, the lithium battery packaging structure also includes screws (not shown in the figure), the upper cover 11 of the housing is provided with screw mounting holes 112 (see Figures 3 and 4), and the lower cover 12 of the housing is provided with threaded columns 122 (see Figure 5 and Fig. 6), the screw passes through the screw mounting hole 112 and is threadedly connected with the threaded post 122, wherein the threaded post 122 can be provided with multiple along the periphery of the inner side of the shell lower cover 12, the number of the screw mounting hole 112 is the same as the number of the threaded post 122 The same, and one-to-one correspondence. Specifically, the screws can further screw the upper casing 11 and the lower casing 12 to be screwed and fixed, so as to ensure that the upper casing 11 and the lower casing 12 will not become loose during long-term use without using auxiliary tools. The stability of the connection of the case lower cover 12 of the cover 11 is excellent.

Specifically, both the upper conductive sheet 21 and the lower conductive sheet 31 are made of nickel strip conductive sheet, the surface of the nickel strip conductive sheet is smooth and bright, and the conductivity is good.

In this embodiment, the side of the packaging shell 10 is provided with a detection port 13, that is, the detection port 13 can be opened on the outside of the upper cover 11 of the housing or the lower cover 12 of the housing. And the case of the case lower cover 12 can confirm the performance and quality of the electric core 70 arranged in the packaging case 10 .

In this embodiment, a power line 60 electrically connected to the PCB board 40 is provided outside the packaging shell 10 . The power cord 60 is configured to be electrically connected to external power sources or electrical appliances, so as to realize the input or output of electric power.

In this embodiment, several through holes 50 are distributed in an array, and the arrangement of several through holes 50 can increase the number of battery cells 70 based on customer's requirements. Wherein, the through holes 50 can be distributed in a circular array or in a rectangular array. This structure can make the arrangement of the through holes 50 tight and orderly, and more battery cells 70 can be installed to increase the capacity of the lithium battery. Can be bigger.

Embodiment two:

As shown in FIG. 7 , this embodiment provides a lithium battery, which includes the lithium battery packaging structure described in Embodiment 1 and several battery cells 70 , and the top of the battery cells 70 is inserted into the through hole 50 of the upper bracket 20 The bottom of the cell 70 is inserted into the through hole 50 of the lower bracket 30 and abuts against the lower conductive sheet 31 . The lithium battery of the utility model has the advantages of integrated internal circuits, which reduces the risk of product damage due to excessive circuits; meanwhile, it has the functions of waterproof, dustproof and shockproof. Wherein, the battery cell 70 is a lithium battery cell 70 .

In this embodiment, a performance testing device (not shown in the figure) for testing the performance of the battery cell 70 is provided inside the packaging shell 10 , and the performance testing device is located at the detection port 13 . Specifically, the performance detection device includes a first detection module, a second detection module, a first acquisition module, a second acquisition module, a third acquisition module, a fourth acquisition module and a determination module.

The first detection module is used to detect the static internal resistance and static voltage of the battery cell 70 in multiple links in the manufacturing process of the battery cell 70; the multiple links include: grouping link, group spot welding link, parallel battery Group aging test link and high temperature static link.

The second detection module is used to perform an aging test on the string of cells 70 formed by a plurality of parallel cells 70 connected in series, and detect the total no-load voltage and the total voltage with load of the string of cells 70 after the aging test.

The first acquisition module is configured to acquire the static internal resistance difference according to the static internal resistance of each link in the plurality of links.

The second acquiring module is configured to acquire the static voltage difference according to the static voltage of each link in the plurality of links.

The third obtaining module is used to obtain the difference value of the no-load total voltage according to the no-load total voltage and the theoretical no-load total voltage.

The fourth obtaining module is used to obtain the difference value of the total load voltage according to the total load voltage and the theoretical total load voltage.

The determination module is used to determine whether the battery string is a good product according to the static internal resistance difference, the static voltage difference, the no-load total voltage difference and the load total voltage difference.

The performance detection device is connected and detected through the detection port 13 opened in the packaging shell 10 , so that the performance and quality of the battery cell 70 can be confirmed by disassembling the packaging shell 10 .

The rest of this embodiment is the same as that of Embodiment 1, and the features not explained in this embodiment are explained in Embodiment 1, and will not be repeated here. ,

In summary, it can be seen that the lithium battery packaging structure of the present invention and the lithium battery using the lithium battery packaging structure have the following advantages: 1. Stronger waterproof and shockproof performance; 2. More convenient maintenance and testing; 3. Internal circuit integration , to reduce the defective rate of products; 4. The number of lithium batteries can be increased or decreased according to the market demand; it can be used to improve the performance that is unprecedented in the previous technology and become practical, and become a product of great practical value.

The above content is only a preferred embodiment of the present utility model. For those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation and scope of application. The content of this specification should not be understood as Limitations on the Invention.

Claims (10)

1. Lithium battery packaging structure, characterized in that: comprising a packaging shell and an upper bracket, a lower bracket and a PCB board arranged in the packaging shell, the upper bracket and the lower bracket are provided with several through holes, so The top of the upper bracket is provided with an upper conductive sheet, the bottom of the lower bracket is provided with a lower conductive sheet, and the upper and lower ends of the PCB board are respectively welded to the upper conductive sheet and the lower conductive sheet. 2 . The lithium battery packaging structure according to claim 1 , wherein the packaging shell includes an upper shell cover and a lower shell cover that are fastened and connected to each other. 3 . 3. The lithium battery packaging structure according to claim 2, characterized in that: the bottom peripheral edge of the upper cover of the housing is provided with a card slot, and the top peripheral edge of the lower cover of the housing is provided with a protrusion that fits and connects with the card slot. edge. 4. The lithium battery packaging structure according to claim 2, characterized in that: it also includes screws, the upper cover of the housing is provided with screw mounting holes, the lower cover of the housing is provided with threaded posts, and the screws pass through the The screw mounting hole is threadedly connected with the threaded post. 5. The lithium battery packaging structure according to any one of claims 1-4, wherein the upper conductive sheet and the lower conductive sheet are nickel strip conductive sheets. 6. The lithium battery packaging structure according to claim 1, wherein a detection port is opened on the side of the packaging shell. 7. The lithium battery packaging structure according to claim 1, wherein a power line electrically connected to the PCB board is provided outside the packaging shell. 8. The lithium battery packaging structure according to claim 1, characterized in that: several through holes are arranged in an array. 9. Lithium battery, characterized in that it comprises the lithium battery packaging structure described in any one of claims 1 to 8 and several battery cells, the top of the battery cells is inserted into the through hole of the upper bracket and connected to the The upper conductive sheet abuts, and the bottom of the cell is inserted into the through hole of the lower bracket and abuts against the lower conductive sheet. 10 . The lithium battery according to claim 9 , wherein a performance detection device for detecting the performance of the battery cell is arranged in the packaging shell. 11 .