Storage battery cast-weld mold

Abstract

The utility model discloses a storage battery cast-weld die and belongs to the technical field of storage battery production equipment. The busbar forming mold comprises a mold body, cooling pipes and supports, a plurality of busbar forming grooves are formed in the upper side face of the mold body, a plurality of cooling runners penetrating through the left end and the right end are arranged in the mold body, the cooling pipes are connected to the two ends of each cooling runner on the mold body, and the supports are arranged at the left end and the right end of the mold body and located at the intervals of the cooling pipes. According to the utility model, the leakage of cooling liquid can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production equipment, in particular to a battery casting and welding mold. Background Art

[0002] The battery casting and welding mold is used to hold liquid lead, so that the liquid lead is cast and welded to the battery's lugs in a specific shape to form a bus. In order to improve the efficiency of busbar forming, a cooling channel is generally provided in the casting and welding mold. In the prior art, for example, the Chinese utility model patent with patent number ZL202020246736.8 discloses a casting and welding mold for an automatic casting and welding machine, comprising a main mold, a first connecting component and a second connecting component extending sequentially from the left and right sides of the main mold, the main mold comprising a plurality of casting and welding beams extending left and right in the length direction and parallel to each other, and a main beam arranged orthogonal to the end of the casting and welding beam, the upper surface of the casting and welding beam is provided with a forming groove for casting and welding the battery pole group, and a connecting ridge is provided between the casting and welding beams.

[0003] The aforementioned cast-weld mold incorporates cooling channels within the connector, meaning the connector serves not only as a support but also as a channel for the coolant. However, because the connector must withstand the pressure between the main mold and the battery, cracking is common at the connection between the connector and the main mold, leading to coolant leakage. Utility Model Content

[0004] The purpose of the utility model is to solve the problems existing in the above-mentioned prior art and to provide a battery casting and welding mold, which can effectively prevent coolant leakage.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A battery casting and welding mold includes a mold body, a cooling pipe, and a bracket. The upper side of the mold body is provided with multiple groups of busbar forming grooves. The mold body is provided with multiple cooling channels running through the left and right ends. The mold body is connected to cooling pipes at both ends of each cooling channel. The brackets are provided at the left and right ends of the mold body and at the intervals between the cooling pipes.

[0007] As a preferred embodiment of the present invention, the bracket includes a mounting beam and at least two connecting rods connecting the mounting beam and the mold body.

[0008] As a preferred embodiment of the present invention, a connecting groove is provided at the end of the mold body, and the connecting rod is inserted into the connecting groove.

[0009] As a preferred embodiment of the present invention, the connecting groove is rectangular, and the connecting rod and the plug-in end of the connecting groove have matching shapes.

[0010] As a preferred embodiment of the present invention, a connection hole is provided on the upper side surface of the mold body at a position corresponding to the connection groove.

[0011] As a preferred embodiment of the present invention, the lower portion of the connecting beam is provided with a plurality of avoidance slopes that cooperate with the cooling pipes.

[0012] As a preferred embodiment of the present invention, the connecting beam is provided with a mounting hole on the upper side surface where it is connected to the connecting rod.

[0013] As a preferred embodiment of the present invention, the connecting rod includes a horizontal extension portion and a vertical rising portion, and the cooling pipe has the same structure.

[0014] As a preferred embodiment of the present invention, a plurality of cooling channels are evenly distributed in the mold body, and the busbar forming grooves are evenly distributed on both sides of each cooling channel.

[0015] As a preferred embodiment of the present invention, a portion of the mold body between adjacent cooling channels is provided with a through groove, and a reinforcing rib is provided in the through groove.

[0016] The advantages of the present invention are that the split structural design of the bracket and the cooling pipe prevents the cooling pipe from bearing the pressure between the mold body and the battery, thereby preventing cracking at the connection between the cooling pipe and the mold body and preventing leakage of the coolant. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 An axonometric view of a battery casting and welding mold provided in an embodiment;

[0018] Figure 2 A bottom view of a battery casting and welding mold provided in an embodiment;

[0019] Figure 3 for Figure 2 Cross-sectional view along the AA axis;

[0020] In the figure: 1-mold body; 11-cooling channel; 12-busbar forming groove; 13-connecting hole; 14-through groove; 15-reinforcement rib; 2-cooling pipe; 3-bracket; 31-mounting beam; 311-avoidance slope; 312-mounting hole; 32-connecting rod; 321-horizontal extension part; 322-vertical rising part. DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementation methods.

[0022] like Figure 1-3As shown, this embodiment provides a battery casting and welding mold, comprising a mold body 1, cooling tubes 2, and brackets 3. Four cooling tubes 2 are provided at each of the left and right ends of the mold body 1. Accordingly, four parallel cooling channels 11 are provided within the mold body 1 along the left and right directions. The cooling tubes 2 can generally be welded to the mold body at the ends of the cooling channels 11. Thus, the left and right cooling tubes 2 and the cooling channels 11 together form a coolant channel. Simultaneously, busbar forming grooves 12 are provided on the upper side of the mold body 1 on either side of each cooling channel 11. Two sets of busbar forming grooves 12 are distributed along the length of each cooling channel 11. Thus, the entire mold body has eight sets of busbar forming grooves, 2*4 in total. This means that this mold can perform the casting and welding of busbars for eight batteries at once, achieving higher efficiency. Two brackets 3 are provided, one at each end of the mold body 1. Due to the presence of the cooling tubes 2, the brackets 3 need to be connected to the gaps between the cooling tubes on the mold body.

[0023] The principle of use of this cast welding mold is relatively conventional: the mold body 1 is first immersed in lead liquid for preheating. After the inverted battery is moved above the mold body 1, the mold body 1 is raised from the lead liquid. At this time, only the busbar forming groove 12 contains lead liquid. The mold body 1 continues to rise or the battery descends until the tabs on the battery are inserted into the busbar forming groove 12 on the mold body 1. Then, coolant is passed into the cooling pipe 2 and the cooling channel 11. The lead liquid solidifies into a busbar, completing the cast welding. Among them, the movement of the mold body 1 and the battery is driven by other mechanical equipment, which will not be described in detail here. Therefore, during the cast welding process, the mold body 1 needs to contact the battery to ensure that the tabs are fully inserted into the busbar forming groove 12, which causes the mold body 1 to withstand a certain amount of pressure. This cast welding mold uses a split design of the cooling pipe 2 and the bracket 3 so that the pressure on the mold body 1 only acts on the bracket 3 and does not affect the cooling pipe 2, avoiding the problem of coolant leakage caused by cracking at the connection between the cooling pipe 2 and the mold body 1.

[0024] Specifically, the bracket 3 includes a mounting beam 31 and two connecting rods 32 connecting the mounting beam 31 to the mold body 1. The mounting beam 31 is used to connect to the lifting drive device. Since the mold body 1 is provided with multiple cooling tubes 2, two or more connecting rods 32 are used to connect the mold body 1 at the gaps between the cooling tubes 2 to avoid mutual interference. To improve the connection stability between the connecting rods 32 and the mold body 1, the mold body 1 is provided with a connecting groove, and one end of the connecting rod 32 is inserted into the connecting groove. Furthermore, the connecting groove is rectangular, and the connecting end of the connecting rod 32 and the connecting groove also has a matching rectangular shape. This ensures that the connecting rod will not rotate after being inserted into the connecting groove, thereby improving stability. In addition, a connecting hole 13 is provided on the upper side of the mold body 1 at a position corresponding to the connecting groove, so that the mold body 1 and the connecting rod 32 can be fixedly connected using screws. Considering that the connection between the bracket 3 and the mold body 1 may crack due to long-term shear force, this fixed structure makes it easier to replace the bracket.

[0025] To accommodate the battery's size and reduce the volume immersed in the lead solution, connecting rod 32 includes a horizontal extension 321 and a vertically elevated portion 322. The horizontal extension 321 extends the length of mold body 1 to accommodate the battery's size, while the vertically elevated portion 322 reduces the volume of bracket 3 immersed in the lead solution, thereby minimizing agitation and the generation of lead slag. Similarly, cooling pipe 2 has a similar structure, but also features a longer extension for connection to the coolant circulation system.

[0026] As mentioned above, the cooling pipe 2 and the connecting rod 32 share the same curved structure. Since the upper end of the connecting rod 32 is connected to the mounting beam 31, the cooling pipe 2 must be positioned below the mounting beam 31. Therefore, to maximize the length of the cooling pipe's vertical section, the lower portion of the connecting beam 31 is provided with three relief bevels 311 that accommodate the cooling pipes 2. The two cooling pipes in the middle share a wider relief bevel. The only area of ​​the mounting beam 31 that lacks a relief bevel is the connection with the connecting rod 32, resulting in a greater thickness. Mounting holes 312 for connecting the lifting drive device are located there on the upper side of the connecting beam 31 to ensure the strength of the screw connection.

[0027] To ensure the stability of the cast welding effect, four cooling channels 11 are evenly distributed within the mold body 1, with busbar forming grooves 12 on both sides of each cooling channel 11. To improve cast welding efficiency, through grooves 14 are provided between adjacent cooling channels 11 within the mold body 1 to enhance heat dissipation. For structural strength, reinforcing ribs 15 are provided within the through grooves 14.

[0028] The above is only a preferred embodiment of the present invention, which is one implementation method based on the overall concept of the present invention. The scope of protection of the present invention is not limited to this embodiment. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A battery casting and welding mold, characterized in that: It includes a mold body, a cooling pipe, and a bracket. The upper side of the mold body is provided with multiple groups of busbar forming grooves. The mold body is provided with multiple cooling channels running through the left and right ends. The mold body is connected to cooling pipes at both ends of each cooling channel. The brackets are provided at the left and right ends of the mold body and at the intervals between the cooling pipes; the bracket includes a mounting beam and at least two connecting rods connecting the mounting beam and the mold body. The mounting beam is used to connect the lifting drive device.

2. A battery casting and welding mold according to claim 1, characterized in that: A connecting groove is provided at the end of the mold body, and the connecting rod is inserted into the connecting groove.

3. A battery casting and welding mold according to claim 2, characterized in that: The connecting groove is rectangular, and the connecting rod and the plug-in end of the connecting groove have matching shapes.

4. A battery casting and welding mold according to claim 2, characterized in that: A connection hole is provided at a position on the upper side surface of the mold body corresponding to the connection groove.

5. The battery casting and welding mold according to claim 1, characterized in that: The lower part of the mounting beam is provided with a plurality of avoidance slopes matching the cooling pipes.

6. A battery casting and welding mold according to claim 5, characterized in that: The connecting beam is provided with a mounting hole on the upper side surface where it is connected to the connecting rod.

7. The battery casting and welding mold according to claim 1, characterized in that: The connecting rod includes a horizontally extending portion and a vertically rising portion, and the cooling pipe has the same structure.

8. The battery casting and welding mold according to claim 1, characterized in that: The plurality of cooling channels are uniformly distributed in the mold body, and the busbar forming grooves are uniformly distributed on both sides of each cooling channel.

9. The battery casting and welding mold according to claim 1, characterized in that: A portion of the mold body between adjacent cooling channels is provided with a through groove, and a reinforcing rib is provided in the through groove.

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