Heat treatment device of lithium ion soft package battery formation clamp machine

Abstract

The utility model provides a heat treatment device for a lithium ion soft package battery formation clamp machine, which relates to the technical field of heat dissipation of clamp machines and comprises a power box with a heat dissipation fan component at one end, and a flow guide air duct is mounted at one end of the power box, which is positioned at the heat dissipation fan component. The end, away from the cooling fan assembly, of the flow guide air channel faces an air outlet of the clamp machine hollowed-out metal plate. The heat dissipation fan assembly and the flow guide air channel are additionally arranged to discharge heat generated by the power box to the outside of the equipment, so that the control difficulty of the heat generated by the power box on the heating temperature of a clamp machine is reduced, the uniformity and consistency of formation temperature are ensured, the stability of an SEI film forming structure is improved, and an alarm caused by unsmooth heat dissipation of the power box during high-temperature formation is avoided; extra cost and energy consumption of equipment caused by increase of the length of the wiring harness of the equipment are avoided, and difficult miscellaneous diseases troubling the charging and discharging equipment for many years are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation of a clamp machine, in particular to a heat treatment device for a lithium ion soft-pack battery formation clamp machine. Background Art

[0002] Lithium-ion soft-pack batteries are widely used in the market due to their high single-cell energy density, and production demand is increasing day by day. However, the production and manufacturing difficulty and cost of lithium-ion soft-pack power batteries are also relatively high. The manufacturing process properties of lithium-ion soft-pack batteries determine that some of its technical problems need to be improved and solved.

[0003] Lithium-ion soft-pack battery formation adopts the high-temperature pressurized formation method of the fixture machine, but it is different from the cluster formation method of square batteries. Its functional requirements determine the structural scheme of the equipment. The usual scheme is to place the power box under the inside of the fixture machine, which not only reduces the length of the channel connection harness but also reduces the energy consumption and cost of the equipment. However, this scheme also brings problems. The heat dissipated by the power box will affect the temperature control of the battery under the high-temperature pressurization of the fixture. The equipment is not good at controlling the temperature, which affects the stability of the SEI film-forming structure. On the other hand, the high temperature of the fixture machine will also affect the heat dissipation of the power box, resulting in the problem of power box temperature alarm. If the power box is taken out of the fixture machine and an external solution is adopted, the length of the harness, energy consumption and equipment cost will increase significantly. Utility Model Content

[0004] In order to solve the above technical problems, the utility model utilizes the cooperation of the heat dissipation fan assembly and the guide air duct to discharge the heat generated by the power box and the heat generated by the battery charging and discharging to the outside of the equipment, thereby ensuring the uniformity and consistency of the formation temperature. The specific technical scheme is as follows:

[0005] A heat treatment device for a lithium-ion soft-pack battery formation fixture machine comprises a power box with a heat dissipation fan assembly installed at one end, the power box is located at one end of the heat dissipation fan assembly and is equipped with a guide air duct, the guide air duct is away from the end of the heat dissipation fan assembly and faces the air outlet of the hollow sheet metal of the fixture machine.

[0006] Preferably, the air guide duct and the power box are fixed by a bolt connector.

[0007] Preferably, the power box is used to charge and discharge the batteries of the corresponding channels of the clamping machine.

[0008] Preferably, the heat dissipation fan assembly includes at least one heat dissipation fan installed on the power box.

[0009] It can be seen from the above technical solutions that the utility model has the following beneficial effects:

[0010] By adding a cooling fan assembly and an air duct, the heat generated by the power box can be discharged to the outside of the equipment, which reduces the difficulty of controlling the heating temperature of the fixture machine due to the heat generated by the power box, ensures the uniformity and consistency of the formation temperature, improves the stability of the SEI film-forming structure, and avoids alarms caused by poor heat dissipation of the power box during high-temperature formation. This solves the difficult and complicated problems that have plagued charging and discharging equipment for many years without increasing the length of the equipment harness, which will lead to additional equipment costs and increased energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is an axial schematic diagram of a flow guide device for heat dissipation of a soft-pack power battery power source;

[0012] Figure 2 The front view of a flow guide device for dissipating heat of a soft-pack power battery power source.

[0013] In the figure: 1. Power box; 2. Sealing gasket; 3. Cooling fan assembly; 4. Air guide duct; 5. Bolt connector. DETAILED DESCRIPTION

[0014] The following is a detailed description of the present invention in conjunction with the accompanying drawings and specific embodiments. Before describing in detail the technical solutions of each embodiment of the present invention, the nouns and terms involved are explained. In this specification, components with the same name or the same number represent similar or identical structures and are only for illustrative purposes.

[0015] like Figure 1 and Figure 2 As shown, a heat treatment device for a lithium-ion soft-pack battery formation fixture machine comprises a power supply box 1 with a heat dissipation fan assembly 3 installed at one end, a guide air duct 4 is installed at one end of the power supply box 1 located at the heat dissipation fan assembly 3, and an end of the guide air duct 4 away from the heat dissipation fan assembly 3 faces the air outlet of the hollow sheet metal of the fixture machine, and the power supply box 1 is used to charge and discharge the battery in the corresponding channel of the fixture machine; wherein the fixture machine is a formation device with a fixture high-temperature pressurized formation at the upper part and a soft-pack battery placed inside, and the power supply box 1 is placed at the lower part of the fixture machine; when a fixture machine is composed of a loading and unloading machine It is composed of a preheating fixture and eighteen charging and discharging fixtures. The lower part of each fixture is equipped with a power box 1. A single fixture has forty channels. When the power box 1 charges and discharges the battery, the heat generated by the battery is located in the air of the channel. As the number of battery charge and discharge increases, the air in the channel gradually heats up. During normal production, the heat generated by the power box 1 is discharged from the hollow sheet metal outlet at the bottom of the fixture through the guide air duct 4 to the outside of the equipment, so as to dissipate the heat of the battery at the corresponding channel of the fixture in time, avoid the temperature increase in the channel, and affect the stability of the SEI film-forming structure.

[0016] The air guide duct 4 and the power box 1 are fixed by bolt connectors 5, and the bolt connectors 5 adopt connecting bolts, preferably eight connecting bolts are adopted to fix the air guide duct 4 and the power box 1. A sealing gasket 2 is provided between the air guide duct 4 and the power box 1. The sealing gasket 2 is arranged between the air guide duct 4 and the power box 1, and along with the fixing of the connecting bolts, the sealing component of the air guide duct 4 is used to reduce or prevent heat from overflowing, so as to prevent heat from accumulating in the power box 1 and affecting the alarm of the power box 1.

[0017] The heat dissipation fan assembly 3 includes at least one heat dissipation fan installed on the power box 1. The number of heat dissipation fans is preferably four. Air conditioning can be used for cooling in the workshop to achieve air convection in the corresponding channel of the clamp machine, which can reduce the temperature of the corresponding channel and prevent the temperature of the channel from gradually increasing with the room temperature.

[0018] The guide air duct 4 half surrounds the outside of the heat dissipation fan assembly 3. The side wall of the guide air duct 4 facing the wind direction of the heat dissipation fan assembly 3 is tilted toward the air outlet of the hollow sheet metal of the fixture machine. Preferably, the guide air duct 4 is surrounded by the outside of the heat dissipation fan assembly 3 on three sides. The tilted setting of the guide air duct 4 can greatly reduce the wind resistance of the heat dissipation fan assembly 3 to extract the hot air at the fixture machine channel. The side wall of the guide air duct 4 can also be set in a trumpet shape to further reduce the wind resistance. The hot air extracted by the heat dissipation fan assembly 3 is discharged from the outside of the equipment from the hollow sheet metal outlet at the bottom of the fixture machine, and the battery at the corresponding channel of the fixture machine is timely cooled to avoid the temperature increase at the channel and affect the stability of the SEI film-forming structure.

[0019] In order to improve the controlled range of the temperature at the fixture machine channel and maintain the uniformity and consistency of the formation temperature, the heat dissipation fan assembly 3 can be controlled by PID, and the guide air duct 4 can be simulated to maintain the uniformity of the formation temperature.

[0020] In the above process, the use of the air guide duct 4 can discharge the heat generated by the power box 1 to the outside of the equipment to the maximum extent, reduce the difficulty of controlling the heating temperature of the clamping machine due to the heat generated by the power box 1, ensure the uniformity and consistency of the formation temperature, and at the same time avoid the temperature alarm of the power box 1 caused by poor heat dissipation of the high-temperature formation power box 1. This solves this problem without increasing the additional equipment cost and energy consumption caused by increasing the length of the equipment harness.

[0021] The above-described embodiments are merely descriptions of preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A heat treatment device for a lithium-ion soft-pack battery formation fixture, characterized in that: include: A power box (1) is installed with a heat dissipation fan assembly (3) at one end, and a guide air duct (4) is installed at the end of the power box (1) located at the heat dissipation fan assembly (3), and the guide air duct (4) is located away from the end of the heat dissipation fan assembly (3) and faces the air outlet of the hollow sheet metal of the clamping machine.

2. The heat treatment device for lithium-ion soft-pack battery formation fixture according to claim 1, characterized in that: The air guide duct (4) and the power supply box (1) are fixed via a bolt connector (5).

3. The heat treatment device for lithium-ion soft-pack battery formation fixture according to claim 2, characterized in that: The bolt connector (5) adopts a connecting bolt.

4. The heat treatment device for lithium-ion soft-pack battery formation fixture according to claim 1, characterized in that: A sealing gasket (2) is provided between the air guide duct (4) and the power box (1).

5. The heat treatment device for lithium-ion soft-pack battery formation fixture according to claim 1, characterized in that: The power supply box (1) is used to charge and discharge the batteries of the corresponding channels of the clamping machine.

6. The heat treatment device for a lithium-ion soft-pack battery formation fixture according to claim 1, characterized in that: The heat dissipation fan assembly (3) comprises at least one heat dissipation fan installed on the power box (1).

7. The heat treatment device for a lithium-ion soft-pack battery formation fixture according to claim 1, characterized in that: The air guide duct (4) half surrounds the outside of the heat dissipation fan assembly (3).

8. The heat treatment device for a lithium-ion soft-pack battery formation fixture according to claim 1 or 7, characterized in that: The side wall of the guide air duct (4) facing the wind direction of the heat dissipation fan assembly (3) is arranged obliquely toward the air outlet of the hollow sheet metal of the clamping machine.

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