CN218395556U

CN218395556U - Finish draw drift water-cooling structure

Info

Publication number: CN218395556U
Application number: CN202222814437.1U
Authority: CN
Inventors: 刘路红; 聂炳南
Original assignee: Jiangxi Zuguang Energy Technology Co ltd
Current assignee: Jiangxi Zuguang Energy Technology Co ltd
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2023-01-31
Anticipated expiration: 2032-10-25

Abstract

The utility model provides a finish-drawing punch water cooling structure, which comprises a columnar punch body, wherein one or more rows of first vertical holes with closed ends at the bottoms are drilled downwards from the top end of the punch body, water-isolating sheets are inserted into the first vertical holes, and gaps are reserved between the bottoms of the water-isolating sheets and the bottom surfaces of the first vertical holes, so that a single first vertical hole is divided into a left part and a right part, and the bottom ends of the first vertical hole are communicated with each other; a first transverse hole which is used for communicating the same row of first vertical holes is drilled in the side surface of the punch body and is higher than the top end of the battery case; the top end of the first vertical hole and the open end of the first transverse hole are sealed by plugs; the punch body is also provided with a water inlet interface and a water outlet interface which are respectively communicated with the two ends of the same waterway. The water cooling structure has a very good cooling effect, and the precision of the battery shell during continuous production is improved; the punched contact surface has no water path drilling, so that the surface of the battery shell can not be scratched; and during water route processing, seamless welding and surface polishing are not needed, so that the production difficulty is greatly reduced.

Description

Finish draw drift water-cooling structure

Technical Field

The utility model relates to a power battery production facility technical field specifically indicates a finish draw drift water-cooling structure.

Background

The battery shell of the power energy storage battery is large in size, and the requirement on production precision is very high. In the production process of battery cases, finish drawing is an essential process, which determines the quality of products. The punch for finish drawing generates a large amount of heat during continuous production, and when the heat is excessive, the dimensional tolerance of the produced battery shell becomes large; in addition, the surface flatness of the punch is also required to prevent scratching the surface of the battery case.

In order to ensure that heat generated by the punch during production is timely removed, a cooling water path needs to be arranged in the punch, and when the water path is processed, one or more rows of first vertical holes (blind holes at the bottom end) need to be drilled vertically on the punch, and then a plurality of first transverse holes are drilled transversely to communicate each row of first vertical holes to form the well-shaped water path. The waterway structure has the following disadvantages that on one hand, the flowing length of the waterway is mainly determined by the number of the first vertical holes, but the strength of the punch is influenced by too many first vertical holes; on the other hand, the end of the first transverse hole needs to be welded seamlessly to ensure no water leakage, and needs to be polished to ensure the surface flatness of the punch, so that the production difficulty is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a finish draw drift water-cooling structure that cooling effect is good, the punching press precision is high, and easily processing.

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

a fine-drawing punch water-cooling structure is used for fine-drawing a battery shell of a power battery and comprises a columnar punch body, one or more rows of first vertical holes with closed ends at the bottom ends are drilled downwards from the top end of the punch body, water-insulating sheets are vertically inserted into the first vertical holes, and gaps are reserved between the bottom ends of the water-insulating sheets and the bottom surfaces of the first vertical holes, so that a single first vertical hole is divided into a left part and a right part, and the bottom ends of the first vertical hole are communicated with one another; a first transverse hole for communicating the first vertical holes in the same row is drilled in the position on the side surface of the punch body and higher than the top end of the battery case; the top end of the first vertical hole and the open end of the first transverse hole are both sealed by plugs; the punch body is also provided with a water inlet interface and a water outlet interface which are respectively communicated with two ends of the same water path.

In a preferred embodiment, one end of the first transverse hole is a closed end.

According to a preferable scheme, the plug is a machine-meter screw in threaded fit with the first vertical hole or the first transverse hole.

In a preferred scheme, the water inlet connector and the water outlet connector are arranged on the top surface of the punch body.

According to a preferable scheme, the water inlet connector and the water outlet connector are communicated with two ends of the first transverse hole through a second vertical hole.

According to a preferable scheme, two or more rows of the first vertical holes are communicated through the second transverse hole to form a waterway; and the second transverse hole is also higher than the top end of the battery shell.

In a preferable scheme, the water-proof sheet is a metal sheet.

The beneficial effects of the utility model reside in that: under the condition of the same number of the first vertical holes, the water path length of the water cooling structure is twice of the original length, so that the cooling effect of the punch is very good, the deformation of the battery case caused by high temperature can be avoided, and the precision of the battery case in continuous production is improved; the punching contact surface of the punch body and the battery shell is drilled without a water path, so that the surface of the battery shell is not scratched; and during water route processing, first transverse hole is in battery case top, consequently need not to do seamless welding and prevent to leak, adopt the machine rice screw to seal can, also need not to carry out the surface and polish, greatly reduced the production degree of difficulty.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic diagram of the overall structure of a finish drawing punch with double water discharge channels in the embodiment;

fig. 2 is a schematic cross-sectional view of the waterway structure of the fine drawing punch in the embodiment.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

referring to fig. 1 and 2, the present embodiment is described by taking as an example a fine drawing punch for fine drawing and punching an aluminum battery case of a power battery to achieve a desired dimensional accuracy and surface flatness. The fine drawing punch comprises a columnar punch body 1, one or more rows of first vertical holes 2 drilled downwards from the top end of the punch body 1, and the bottom end of each first vertical hole 2 is a closed end; metal water-proof piece 3 is inserted in first vertical hole 2, just the bottom of water-proof piece 3 has the clearance with the bottom surface of first vertical hole 2, makes singly U type water route of two parts and bottom intercommunication about first vertical hole 2 is separated into, the top of water-proof piece 3 is sealed through end cap 21, and concrete accessible machine rice screw will the top of first vertical hole 2 is sealed. And a first transverse hole 4 for communicating the first vertical holes 2 in the same row is drilled in the side surface of the punch body 1 and at a position higher than the top end of the battery case, the tail end of the first transverse hole 4 can be a closed end, and the starting end is closed by a plug 41, particularly by a screw. The first transverse holes 4 communicate the upper ends of the first vertical holes 2 in the same row with each other, so that a complete water path is formed in the same row, and the length of the water path is approximately twice of the total length of the first vertical holes 2 in the same row. The top surface of the punch body 1 is also provided with a water inlet interface 51 and a water outlet interface 52 which are respectively communicated with two ends of the same drainage channel, wherein the water inlet interface 51 and the water outlet interface 52 are communicated with two ends of the first transverse hole 4 through the second vertical hole 5. The number of rows of the first vertical holes 2 on the punch body 1 and the number of the first vertical holes 2 in the same row may be set according to the shape of the punch body 1, and in other embodiments, a second transverse hole may be provided to connect two or more rows of the first vertical holes 2, and the second transverse hole is also higher than the top end of the battery case.

According to the water cooling structure on the finish-drawing punch, under the condition that the number of the first vertical holes 2 is the same, the length of a water path is twice that of the original water path, so that the cooling effect of the punch is very good, the deformation of a battery case caused by high temperature can be avoided, and the precision of the battery case in continuous production is improved; the punching contact surface of the punch body 1 and the battery shell is drilled without a water path, so that the surface of the battery shell is not scratched; and during the water route processing, first transverse hole 4 is in battery case top, consequently need not to do seamless welding and prevent to leak, adopt the machine rice screw to seal can, also need not to carry out the surface and polish, greatly reduced the production degree of difficulty.

The above description is not intended to limit the technical scope of the present invention, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are all within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a finish draw drift water-cooling structure for finish draw processing power battery's battery case, its characterized in that: the punch comprises a columnar punch body, wherein one or more rows of first vertical holes with closed ends at the bottom ends are drilled downwards from the top end of the punch body, water-insulating sheets are vertically inserted into the first vertical holes, and gaps are formed between the bottom ends of the water-insulating sheets and the bottom surfaces of the first vertical holes, so that a single first vertical hole is divided into a left part and a right part, and the bottom ends of the first vertical holes are communicated with each other; a first transverse hole for communicating the first vertical holes in the same row is drilled in the position on the side surface of the punch body and higher than the top end of the battery case; the top end of the first vertical hole and the open end of the first transverse hole are both sealed by plugs; the punch body is also provided with a water inlet interface and a water outlet interface which are respectively communicated with two ends of the same water path.

2. The finish drawing punch water-cooling structure of claim 1, wherein: one end of the first transverse hole is a closed end.

3. The finish drawing punch water-cooling structure of claim 1, wherein: the plug is a machine meter screw in threaded fit with the first vertical hole or the first transverse hole.

4. The finish drawing punch water-cooling structure of claim 1, wherein: the water inlet interface and the water outlet interface are arranged on the top surface of the punch body.

5. The finish drawing punch water-cooling structure of claim 4, wherein: the water inlet interface and the water outlet interface are communicated with two ends of the first transverse hole through a second vertical hole.

6. The finish drawing punch water-cooling structure of claim 1, wherein: two or more rows of the first vertical holes are communicated through second transverse holes to form a waterway; and the second transverse hole is also higher than the top end of the battery shell.

7. The finish-drawing punch water-cooling structure according to claim 1, characterized in that: the water-proof sheet is a metal sheet.