Formation cabinet of semi-solid soft package lithium battery

Abstract

The utility model relates to the technical field of lithium battery manufacturing, in particular to a formation cabinet of a semi-solid soft package lithium battery. A formation module is arranged in the upper cavity of the cabinet body, the formation module comprises a plurality of heating plates which are arranged at intervals, and a liquid channel is arranged in each heating plate; a heating water tank and a cooling water tank are arranged in the lower cavity of the cabinet body; a first water pump in the heating water tank is connected with a hot water main inlet pipe; the hot water main inlet pipe is connected to a water inlet of the liquid channel through a hot water inlet branch pipe; a water outlet of the liquid channel is connected to a hot water main return pipe through a hot water return branch pipe; a water outlet end of the hot water main return pipe is connected to the heating water tank; a second water pump in the cooling water tank is connected with a cold water main inlet pipe; the cold water main inlet pipe is connected to a water inlet of the liquid channel through a cold water inlet branch pipe; a water outlet of the liquid channel is connected to a cold water main return pipe through a cold water return branch pipe, and the water outlet end of the cold water main return pipe is connected to the cooling water tank.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery manufacturing technical field especially relates to a kind of formation cabinet of semi-solid soft pack lithium battery. BACKGROUND

[0002] Formation process is one of the very key processes in semi-solid soft pack lithium battery production. It is often formed at 30 to 60 degrees Celsius to improve the cycle performance and storage performance of the battery. The main effects of formation include: ①activating battery active material, through the first charge, activating the active material in the battery, and activating the lithium battery. ②Forming SEI film, during the formation process, lithium salt and electrolyte have side reactions, and a solid electrolyte interface film is generated on the negative side of the lithium battery. This film can prevent further side reactions, reduce the loss of active lithium, and increase the safety and stability of the battery. ③Improve battery performance, through the formation process, the electrochemical performance of the battery can be optimized to ensure better performance and longer life of the battery during use.

[0003] The equipment used for formation is a formation cabinet, which has a formation module. In the formation mode, there are multiple overlapping heating plates. When forming semi-solid soft pack lithium batteries, the semi-solid soft pack lithium batteries are placed between two adjacent heating plates, and the heating plates are pressed by the air cylinder on the formation module, and then hot-pressing formation operation is performed. In the prior art, patent No. CN206098585U discloses a full-automatic high-temperature pressurized formation machine for polymer lithium batteries. Patent No. CN206098584U discloses a horizontal high-temperature pressurized formation machine for polymer lithium batteries.

[0004] However, the formation machine in the above-mentioned prior art has the following problems: after formation, the semi-solid soft pack lithium battery is still clamped between the two heating plates, and rapid cooling cannot be achieved. In addition, the heating plates in the traditional formation machine use electric heating, which results in high power consumption. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a formation cabinet for semi-solid soft pack lithium batteries, which aims to solve the above technical problems.

[0006] In order to achieve the above object, the utility model provides a kind of formation cabinet of semi-solid soft package lithium battery, including cabinet, the cabinet has upper cavity and lower cavity, formation module is provided in the upper cavity of cabinet, the formation module includes multiple heating plates arranged with mutual spacing, liquid passage is provided in the inside of each heating plate;Heating water tank and cooling water tank are provided in the lower cavity of the cabinet;First water pump is provided in the heating water tank, and the first water pump is connected with hot water main inlet pipe;Hot water inlet branch pipe is connected on hot water main inlet pipe, and hot water inlet branch pipe is connected to the water inlet of liquid passage;The water outlet of liquid passage is connected to hot water main return pipe by hot water return branch pipe, and the water outlet end of hot water main return pipe is connected to the heating water tank;Second water pump is provided in the cooling water tank, and the second water pump is connected with cold water main inlet pipe;Cold water inlet branch pipe is connected on cold water main inlet pipe, and cold water inlet branch pipe is connected to the water inlet of liquid passage;The water outlet of liquid passage is connected to cold water main return pipe by cold water return branch pipe, and the water outlet end of cold water main return pipe is connected to the cooling water tank;Electromagnetic valve is provided on hot water inlet branch pipe, hot water return branch pipe, cold water inlet branch pipe, cold water return branch pipe.

[0007] Preferably, three-way pipe joint is respectively provided at the water inlet and water outlet of the liquid passage.

[0008] Preferably, heating pipe is provided in the heating water tank.

[0009] Preferably, heat insulation cotton is wrapped on the outer circumferential surface of the heating water tank.

[0010] Preferably, filter screen is respectively provided at the water inlet of the first water pump and the second water pump.

[0011] Preferably, the liquid passage is distributed in the inside of the heating plate in an up-and-down meandering manner.

[0012] Preferably, temperature display device is provided on the cabinet, and first temperature sensor is provided on the heating plate;The first temperature sensor is connected with the temperature display device.

[0013] Preferably, second temperature sensor is provided in the heating water tank, and the second temperature sensor is connected with the temperature display device.

[0014] Preferably, third temperature sensor is provided in the cooling water tank, and the third temperature sensor is connected with the temperature display device.

[0015] Preferably, water replenishment connection pipe port is respectively provided on the upper part of the heating water tank and the cooling water tank;Drainage port is provided at the bottom of the heating water tank and the cooling water tank.

[0016] With the above technical scheme, the present application has the following advantages:

[0017] (1) By adopting the formation cabinet provided by the present application, when the heating plate needs to be heated, the electromagnetic valves on the cold water inlet branch pipe and the cold water return branch pipe are closed, the electromagnetic valves on the hot water inlet branch pipe and the hot water return branch pipe are opened, and the first water pump is started, so that the hot water in the water tank flows into the liquid passage of the heating plate through the hot water main inlet pipe and the hot water inlet branch pipe, the heating plate is heated, and then the hot water returns to the heating water tank through the hot water return branch pipe and the hot water main return pipe, so that the heating plate can be continuously heated.

[0018] (2) In the present application, the cold water circulation mode can continuously cool the heating plate, which is beneficial to realize rapid cooling.

[0019] (3) In the present application, the heating plate is heated by the hot water circulation mode, which overcomes the problem of large power consumption caused by electric heating of the heating plate in the traditional formation machine.

[0020] (4) The formation cabinet provided by the present application can realize rapid heating and rapid cooling of the heating plate, and meets the needs of semi-solid soft package lithium battery formation. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the structures shown in these drawings without creative labor.

[0022] Figure 1 The overall structure of the formation cabinet provided by the present application is shown in the figure.

[0023] Figure 2 The front view of the heating plate in the present application is shown in the figure.

[0024] Figure 3 The Figure 2 A-A sectional view in the figure.

[0025] Figure 4 Figure is the connecting pipeline schematic view of the heating water tank, the cooling water tank and the heating plate in the utility model, and the arrow in the figure indicates the water flow direction.

[0026] The number of the drawing is explained: 1, cabinet body; 2, heating plate; 2a, liquid passage; 3, heating water tank; 4, cooling water tank; 5, first water pump; 6, hot water main inlet pipe; 7, hot water inlet branch pipe; 8, hot water return branch pipe; 9, hot water main return pipe; 10, second water pump; 11, cold water main inlet pipe; 12, cold water inlet branch pipe; 13, cold water return branch pipe; 14, cold water main return pipe; 15, three-way pipe joint; 16, heating pipe; 17, heat insulation cotton; 18, filter screen; 19, first temperature sensor; 20, temperature display device; 21, second temperature sensor; 22, third temperature sensor; 23, water replenishing connecting pipe opening; 24, drain opening. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0029] In addition, the description of "first", "second" and the like in the utility model is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the utility model.

[0030] Combination Figure 1As shown, a kind of semi-solid soft package lithium battery formation cabinet, including cabinet 1, the cabinet 1 has upper cavity and lower cavity, is provided with formation module in the upper cavity of cabinet 1, the formation module includes multiple mutually spaced heating plate 2.The structure of the formation module is conventional prior art, has been disclosed in patent CN206098585U, CN206098584U, and will not be described here.

[0031] Combined Figures 2 to 4 As shown, liquid passage 2a is provided in the interior of each heating plate 2;Heating water tank 3 and cooling water tank 4 are provided in the lower cavity of the cabinet 1;First water pump 5 is provided in the heating water tank 3, and hot water main inlet pipe 6 is connected to the first water pump 5;Hot water inlet branch pipe 7 is connected to hot water main inlet pipe 6, and hot water inlet branch pipe 7 is connected to the water inlet of liquid passage 2a;The water outlet of liquid passage 2a is connected to hot water main return pipe 9 through hot water return branch pipe 8, and the water outlet end of hot water main return pipe 9 is connected to the heating water tank 3;Second water pump 10 is provided in the cooling water tank 4, and cold water main inlet pipe 11 is connected to the second water pump 10;Cold water inlet branch pipe 12 is connected to cold water main inlet pipe 11, and cold water inlet branch pipe 12 is connected to the water inlet of liquid passage 2a;The water outlet of liquid passage 2a is connected to cold water main return pipe 14 through cold water return branch pipe 13, and the water outlet end of cold water main return pipe 14 is connected to the cooling water tank 4;Electromagnetic valve is provided on hot water inlet branch pipe 7, hot water return branch pipe 8, cold water inlet branch pipe 12 and cold water return branch pipe 13.

[0032] By adopting the above structure, combined Figure 4 As shown, the specific use principle is as follows:

[0033] When heating plate 2 needs to be heated, close the electromagnetic valves on cold water inlet branch pipe 12 and cold water return branch pipe 13, open the electromagnetic valves on hot water inlet branch pipe 7 and hot water return branch pipe 8, start first water pump 5, and the hot water in heating water tank 3 flows into the liquid passage 2a of heating plate 2 through hot water main inlet pipe 6 and hot water inlet branch pipe 7 to heat heating plate 2, and then the hot water flows back to heating water tank 3 from hot water return branch pipe 8 and hot water main return pipe 9, so that heating plate 2 can be continuously heated.

[0034] When the heating plate 2 needs to be cooled, the solenoid valves on the hot water inlet branch pipe 7 and the hot water return branch pipe 8 are closed, the solenoid valves on the cold water inlet branch pipe 12 and the cold water return branch pipe 13 are opened, and the second water pump 10 is started. The cold water in the cooling water tank 4 flows into the liquid channel 2a of the heating plate 2 through the cold water main inlet pipe 11 and the cold water inlet branch pipe 12 to cool the heating plate 2. After that, the cold water flows back to the cooling water tank 4 from the cold water return branch pipe 13 and the cold water main return pipe 14. This cycle can continuously cool the heating plate 2.

[0035] Combine Figure 4 As shown, to facilitate pipe connection, a three-way pipe joint 15 is provided at the water inlet and outlet of the liquid channel 2a. Specifically, the outlet ends of the hot water inlet branch pipe 7 and the cold water inlet branch pipe 12 are respectively connected to the two inlets of the three-way pipe joint 15 at the water inlet of the liquid channel 2a; the inlet ends of the hot water return branch pipe 8 and the cold water return branch pipe 13 are respectively connected to the two outlets of the three-way pipe joint 15 at the water outlet of the liquid channel 2a.

[0036] In this embodiment, a heating pipe 16 is provided in the heating water tank 3. The purpose of providing the heating pipe 16 is to heat the water in the heating water tank 3.

[0037] In this embodiment, in order to improve the heat preservation effect of the heating water tank 3 , heat preservation cotton 17 is wrapped on the outer peripheral surface of the heating water tank 3 .

[0038] In order to prevent impurities in the heating water tank 3 and the cooling water tank 4 from entering the liquid channel 2a of the heating plate 2 and causing blockage, a filter 18 is provided at the water inlet of the first water pump 5 and the second water pump 10 respectively.

[0039] Combine Figure 2 As shown, the liquid channel 2a is distributed inside the heating plate 2 in an up-and-down winding shape.

[0040] Combine Figure 1 and Figure 4As shown, the temperature display device 20 is arranged on the cabinet body 1, and the first temperature sensor 19 is arranged on the heating plate 2; the first temperature sensor 19 is connected with the temperature display device 20. The first temperature sensor 19 is used for sensing the temperature on the heating plate 2 and converting into an available output signal, which is transmitted to the temperature display device 20, so as to realize the real-time display of the temperature. Further, the second temperature sensor 21 is arranged in the heating water tank 3, and the second temperature sensor 21 is connected with the temperature display device 20. The second temperature sensor 21 is used for sensing the water temperature in the heating water tank 3 and converting into an available output signal, which is transmitted to the temperature display device 20, so as to realize the real-time display of the temperature of the heating water tank 3. Similarly, the third temperature sensor 22 is arranged in the cooling water tank 4, and the third temperature sensor 22 is connected with the temperature display device 20. The third temperature sensor 22 is used for sensing the water temperature in the cooling water tank 4 and converting into an available output signal, which is transmitted to the temperature display device 20, so as to realize the real-time display of the temperature of the cooling water tank 4.

[0041] In combination Figure 4 As shown, the water replenishing pipe port 23 is arranged on the upper part of the heating water tank 3 and the cooling water tank 4 respectively, and the water replenishing pipe port 23 is used for connecting to a water source. In the embodiment, the water source is a tap water pipe.

[0042] After the heating water tank 3 is used for a long time, the water level is lowered due to the evaporation of the water. The water replenishing pipe port 23 is connected to the tap water pipe to replenish water.

[0043] The drain port 24 is arranged at the bottom of the heating water tank 3 and the cooling water tank 4. After the heating water tank 3 and the cooling water tank 4 are used for a long time, impurities are accumulated in the water. Therefore, the water can be drained through the drain port 24, and the two water tanks can be cleaned and then replenished with water.

[0044] In addition, when the cold water is used for circulating cooling, part of the hot water in the liquid channel 2a enters the cooling water tank 4, and the water temperature in the cooling water tank 4 is increased in the cooling process. Therefore, part of the water can be drained through the drain port 24, and the water replenishing pipe port 23 is used for replenishing water, so as to maintain the water temperature in the cooling water tank 4 and ensure the cooling effect.

[0045] The above only describes the preferred embodiments of the present application, and does not limit the patent range of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or the like within the concept of the present application and the contents of the present application are included in the patent protection range of the present application.

Claims

1. A formation cabinet for semi-solid soft-pack lithium batteries, comprising a cabinet body (1) provided with an upper cavity and a lower cavity, a formation module is arranged in the upper cavity of the cabinet body (1), the formation module comprises a plurality of heating plates (2) arranged at intervals. Liquid channels (2a) are arranged in the interior of each heating plate (2); heating water tank (3) and cooling water tank (4) are arranged in the lower cavity of the cabinet (1); First water pump (5) is arranged in the heating water tank (3), and hot water main water inlet pipe (6) is connected to the first water pump (5); hot water inlet branch pipe (7) is connected to the hot water main water inlet pipe (6), and the hot water inlet branch pipe (7) is connected to the water inlet of the liquid channel (2a); the water outlet of the liquid channel (2a) is connected to the hot water main water return pipe (9) through the hot water return branch pipe (8), and the water outlet end of the hot water main water return pipe (9) is connected to the heating water tank (3); Second water pump (10) is arranged in the cooling water tank (4), and cold water main water inlet pipe (11) is connected to the second water pump (10); cold water inlet branch pipe (12) is connected to the cold water main water inlet pipe (11), and the cold water inlet branch pipe (12) is connected to the water inlet of the liquid channel (2a); the water outlet of the liquid channel (2a) is connected to the cold water main water return pipe (14) through the cold water return branch pipe (13), and the water outlet end of the cold water main water return pipe (14) is connected to the cooling water tank (4); Electromagnetic valves are arranged on the hot water inlet branch pipe (7), the hot water return branch pipe (8), the cold water inlet branch pipe (12) and the cold water return branch pipe (13).

2. The formation cabinet of the semi-solid soft-pack lithium battery according to claim 1, characterized in that, Three-way pipe joints (15) are arranged at the water inlets and outlets of the liquid channels (2a) respectively.

3. The formation cabinet of the semi-solid soft-pack lithium battery according to claim 1, characterized in that, Heating pipes (16) are arranged in the heating water tank (3).

4. The formation cabinet of the semi-solid soft-pack lithium battery of claim 1, wherein, Thermal insulation cotton (17) is wrapped on the outer circumferential surface of the heating water tank (3).

5. The formation cabinet of the semi-solid soft-pack lithium battery of claim 1, wherein, Filter screens (18) are arranged at the water inlets of the first water pump (5) and the second water pump (10) respectively.

6. The formation cabinet of the semi-solid soft-pack lithium battery of claim 1, wherein, The liquid channels (2a) are arranged in the interior of the heating plate (2) in an up-and-down winding manner.

7. The formation cabinet of the semi-solid soft-pack lithium battery of claim 1, wherein, Temperature display devices (20) are arranged on the cabinet (1), and first temperature sensors (19) are arranged on the heating plates (2); the first temperature sensors (19) are connected with the temperature display devices (20).

8. The formation cabinet of the semi-solid soft-pack lithium battery according to claim 7, characterized in that, Second temperature sensors (21) are arranged in the heating water tank (3), and the second temperature sensors (21) are connected with the temperature display devices (20).

9. The formation cabinet of the semi-solid soft-pack lithium battery according to claim 7, characterized in that, Third temperature sensors (22) are arranged in the cooling water tank (4), and the third temperature sensors (22) are connected with the temperature display devices (20).

10. The formation cabinet of the semi-solid soft-pack lithium battery of claim 1, wherein, Supplement water connection pipe openings (23) are arranged on the upper parts of the heating water tank (3) and the cooling water tank (4) respectively; drain openings (24) are arranged at the bottoms of the heating water tank (3) and the cooling water tank (4).

Images