Feeding equipment

Abstract

The utility model belongs to the technical field of battery slurry preparation, and discloses feeding equipment which comprises a storage device and a metering device. The storage device is used for storing a first substance with the melting point smaller than the preset temperature and can heat the first substance. The metering device is communicated with the material storage device, and a height difference exists between the arrangement position of the metering device and the arrangement position of the material storage device, so that the first substance in the material storage device can flow into the metering device under the action of the gravity of the first substance; the metering device can input a preset amount of the first substance into a second substance. The feeding equipment provided by the utility model has relatively high feeding efficiency and relatively low manual labor intensity.

Description

Technical Field

[0001] The utility model relates to the technical field of battery slurry preparation, in particular to a feeding device. Background Art

[0002] In the lithium battery anode slurry process, ethylene carbonate (material) needs to be added to the prepared slurry, which is used to improve the surface cracking of the anode electrode. Since the material is in a crystalline state at room temperature, that is, ethylene carbonate is a low melting point substance, it needs to be heated to become liquid.

[0003] In the prior art, the method of adding ethylene carbonate or other low-melting-point substances to slurry or other substances is usually to set up a material heating furnace, put the barreled ethylene carbonate (or other low-melting-point substances) into the material heating furnace, so as to continuously heat the barreled materials (or other low-melting-point substances). When ethylene carbonate (or other low-melting-point substances) needs to be added to the slurry, the barreled ethylene carbonate (or other low-melting-point substances) is manually pulled out of the material heating furnace, and the ethylene carbonate (or other low-melting-point substances) is quickly extracted with a suction gun, and the required weight is weighed, and then manually poured into a mixing container for mixing. At the same time, the barreled ethylene carbonate (or other low-melting-point substances) is manually pulled into the material heating furnace and heated to prevent crystallization.

[0004] It can be seen that the method of adding ethylene carbonate (or other low melting point substances) in the prior art requires a lot of manpower, has a high labor intensity, and has low efficiency. Utility Model Content

[0005] The utility model aims to provide a feeding device with higher feeding efficiency and lower manual labor intensity.

[0006] As conceived above, the technical solution adopted by the utility model is:

[0007] Feeding equipment, including:

[0008] A material storage device, the material storage device is used to store a first substance having a melting point lower than a preset temperature and is capable of heating the first substance;

[0009] A metering device is connected to the storage device, and there is a height difference between the setting position of the metering device and the setting position of the storage device, so that the first substance in the storage device can flow into the metering device under the action of its own gravity, and the metering device can input a preset amount of the first substance into the second substance.

[0010] Optionally, the material storage device is provided with a heat source inlet, a heat source outlet, a first material inlet and a first material outlet, and a heating flow channel and a material flow channel are provided in the material storage device, the heating flow channel is connected with the heat source inlet and the heat source outlet, the material flow channel is connected with the first material inlet and the first material outlet, and the heat medium in the heating flow channel is used to heat the first substance in the material flow channel.

[0011] Optionally, the material storage device comprises a storage shell and a core body arranged in the storage shell, the core body is provided with the heating flow channel, and the core body is provided with a channel, and the gap between the core body and the storage shell and the channel constitute the material flow channel;

[0012] The heat source inlet and the heat source outlet are both opened on the side wall of the storage shell, and the heat source inlet and the inlet of the heating channel, as well as the heat source outlet and the outlet of the heating channel are connected through pipelines, and the first material inlet and the first material outlet are both opened in the storage shell.

[0013] Optionally, the heating flow channel is a serpentine flow channel.

[0014] Optionally, the heat source inlet and the heat source outlet are arranged on two opposite side walls of the material storage device in the first direction, and the heat source inlet is closer to the bottom of the material storage device than the heat source outlet;

[0015] The first material inlet is arranged at the top of the material storage device, and the first material outlet is arranged at the bottom of the material storage device.

[0016] Optionally, the storage device is provided with an air suction port, through which the gas in the storage device can be sucked to form a negative pressure.

[0017] Optionally, the metering device includes a discharge pipe, a metering tank and a weighing module, the metering tank is connected to the storage device through the discharge pipe, and the weighing module is used to weigh the metering tank so as to input a preset amount of the first substance into the second substance.

[0018] Optionally, the metering device further includes a controller, a first pressure sensor, an inlet regulating valve and a first discharge regulating valve;

[0019] The first pressure sensor, the inlet regulating valve and the first discharge regulating valve are all connected to the controller, and the controller controls the opening and closing of the inlet regulating valve and the first discharge regulating valve. The first pressure sensor is used to detect the pressure in the metering tank. The inlet regulating valve is arranged at the inlet of the metering tank, and the first discharge regulating valve is arranged at the outlet of the metering tank. The metering tank is provided with a first inflation port, and the first inflation port is connected to an external gas source.

[0020] Optionally, the metering device also includes a second discharge regulating valve, the controller controls the opening and closing of the second discharge regulating valve, and the second discharge regulating valve is arranged at one end of the discharge pipe close to the storage device, and a second inflation port is opened on the discharge pipe, the second inflation port is arranged downstream of the second discharge regulating valve and is located at one end of the discharge pipe close to the storage device, and the second inflation port is connected to an external air source.

[0021] Optionally, the feeding equipment further comprises a first bracket, a plurality of the weighing modules are provided, the plurality of the weighing modules are arranged on the first bracket at intervals, and the metering tank is supported on the plurality of the weighing modules.

[0022] Optionally, the longitudinal section of the metering tank is conical, the first bracket is provided with a mounting hole, the metering tank is inserted into the mounting hole, the top of the metering tank is provided with a feed port, and the bottom of the metering tank is provided with a discharge port.

[0023] Optionally, the metering device further comprises a heating component arranged outside the metering tank, and the heating component is used to heat the metering tank.

[0024] Optionally, the discharge pipe is arranged at an angle, and an end of the discharge pipe close to the storage device is located above an end of the discharge pipe close to the metering tank.

[0025] Optionally, the feeding equipment also includes a material heating device and a first material delivery pipe, the material heating device is used to heat a material tank containing the first substance, one end of the first material delivery pipe is inserted into the material tank, and the other end is connected to the material storage device, and the first material delivery pipe is coated with an insulation structure.

[0026] Optionally, the feeding equipment also includes a second feed pipe and a third discharge regulating valve, one end of the second feed pipe is connected to the metering device, the third discharge regulating valve is arranged at the other end of the second feed pipe, and a third inflation port is opened on the second feed pipe, and the third inflation port is connected to an external air source.

[0027] Optionally, the second material conveying pipe comprises a vertical pipe section, a horizontal pipe section and a vertical heating pipe section which are connected in sequence, wherein one end of the vertical pipe section away from the horizontal pipe section is connected to the metering device, and one end of the vertical heating pipe section away from the horizontal pipe section is used to input the first substance into the second substance, and the vertical heating pipe section can heat the material located therein;

[0028] The first discharge regulating valve of the metering device is arranged on the vertical pipe section and is located upstream of the third inflation port, and the third discharge regulating valve is arranged on one end of the vertical heating pipe section away from the horizontal pipe section.

[0029] Beneficial effects of the utility model:

[0030] The feeding equipment provided by the utility model is provided with a storage device to store the first substance, and the storage device can heat the first substance. There is no need to manually pull the container where the first substance is located into the heating furnace for heating, so that the first substance will not crystallize in the storage device, saving manpower. The metering device is connected to the storage device, and there is a height difference between the setting position of the metering device and the setting position of the storage device, so that the first substance in the storage device can flow into the metering device under the action of its own gravity. Compared with manual addition, it has higher adding efficiency, does not need to consume more manpower, and reduces the labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0032] Figure 1 This is a schematic diagram of the structure of the feeding equipment provided by the embodiment of the utility model Figure 1 ;

[0033] Figure 2 This is a schematic diagram of the structure of the feeding equipment provided by the embodiment of the utility model Figure 2 ;

[0034] Figure 3 is a top view of a storage device provided by an embodiment of the utility model;

[0035] Figure 4 This is a cross-sectional view of the storage device provided by the embodiment of the utility model Figure 1 ;

[0036] Figure 5This is a cross-sectional view of the storage device provided by the embodiment of the utility model Figure 2 ;

[0037] Figure 6 This is a cross-sectional view of the storage device provided by the embodiment of the utility model Figure 3 ;

[0038] Figure 7 It is a structural schematic diagram of a metering device provided in an embodiment of the utility model.

[0039] In the figure:

[0040] 100, material storage device; 101, heat source inlet; 102, heat source outlet; 103, first material inlet; 104, first material outlet; 105, heating flow channel; 1051, sub-flow channel; 106, material flow channel; 107, first cavity; 108, second cavity; 109, air extraction port; 10a, first pressure relief valve port; 10b, liquid level sensor; 10c, second pressure sensor; 10d, temperature sensor; 110, storage shell; 120, core; 121, channel;

[0041] 200, metering device; 210, discharge pipe; 211, second charging port; 220, metering tank; 221, first charging port; 222, second material inlet; 223, second material outlet; 230, weighing module; 240, first pressure sensor; 250, inlet regulating valve; 260, first discharge regulating valve; 270, second discharge regulating valve; 280, charging valve; 290, second pressure relief valve port;

[0042] 300, first bracket;

[0043] 400. Incoming material heating device;

[0044] 500, first material delivery pipe; 600, second bracket;

[0045] 700, vacuum pneumatic valve;

[0046] 820, second material delivery pipe; 821, third air filling port; 822, horizontal pipe section; 823, vertical heating pipe section; 824, vertical pipe section; 830, third material discharge regulating valve;

[0047] 1. Slurry tank;

[0048] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0049] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention are further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the convenience of description, only the parts related to the present invention are shown in the accompanying drawings, rather than all of them.

[0050] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0051] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the present utility model, unless otherwise clearly stipulated and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. In the description of this embodiment, unless otherwise specified, "multiple" specifically refers to two or more.

[0053] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0054] This embodiment provides a feeding device that can be used to add a first substance to a second substance, and has high adding efficiency and low manual labor intensity.

[0055] Among them, the first substance can be a low melting point substance, and the melting point of the first substance is less than the preset temperature, and the preset temperature can be 5°C, 10°C, 15°C, 20°C, 25°C, 30°C, 35°C, etc. It should be noted that this embodiment only lists the above-mentioned temperature values, but it is not limited to this. Those skilled in the art can choose according to actual needs. For example, the first substance can be ethylene carbonate (also known as EC). Of course, it can be understood that the first substance can also be other substances, which is not limited in this embodiment. The second substance can be a slurry or other substance used to manufacture a battery anode, which is not limited in this embodiment.

[0056] In the following description of this embodiment, the first substance is EC and the second substance is slurry.

[0057] like Figure 1 and Figure 2 As shown, the feeding device comprises a storage device 100 and a metering device 200. The storage device 100 is used to store EC and can heat EC to prevent EC from crystallization.

[0058] The metering device 200 is connected to the storage device 100, and there is a height difference between the setting position of the metering device 200 and the setting position of the storage device 100. For example, the storage device 100 can be located above the metering device 200, so that the EC in the storage device 100 can flow into the metering device 200 under the action of its own gravity, without setting up a driving device, saving the cost of the feeding equipment.

[0059] In this embodiment, the metering device 200 can input a preset amount of EC into the slurry, that is, the amount of EC input into the slurry by the metering device 200 is controllable, and the amount of EC in the slurry will not be too large or too small, thereby improving the reliability of the feeding equipment.

[0060] The feeding equipment provided in this embodiment is provided with a storage device 100 to store the first substance. The storage device 100 can heat the first substance, and there is no need to manually pull the container containing the first substance into the heating furnace for heating, so that the first substance will not crystallize in the storage device 100, saving manpower. The metering device 200 is connected to the storage device 100, and there is a height difference between the setting position of the metering device 200 and the setting position of the storage device 100, so that the first substance in the storage device 100 can flow into the metering device 200 under the action of its own gravity. Compared with manual addition, it has higher adding efficiency, does not need more manpower, and reduces the labor intensity.

[0061] Alternatively, if Figure 2 , Figure 3 and Figure 6As shown, the material storage device 100 is provided with a heat source inlet 101, a heat source outlet 102, a first material inlet 103 and a first material outlet 104. The material storage device 100 may be a heat exchange device. Specifically, a heating flow channel 105 and a material flow channel 106 are provided in the material storage device 100, and the heating flow channel 105 is connected with the heat source inlet 101 and the heat source outlet 102, so that the heat medium can flow into the heating flow channel 105 through the heat source inlet 101, and flow out of the heating flow channel 105 from the heat source outlet 102. The material flow channel 106 is connected with the first material inlet 103 and the first material outlet 104, so that the first material can flow into the material flow channel 106 from the first material inlet 103, and flow out of the material flow channel 106 from the first material outlet 104. The heat medium in the heating flow channel 105 is used to heat the EC in the material flow channel 106 to prevent EC from crystallizing.

[0062] By providing the heating flow channel 105 and the material flow channel 106 , the material can be heated while flowing in the material flow channel 106 , thereby improving the heating effect.

[0063] Further optionally, the storage device 100 includes a storage shell 110 and a core 120 disposed in the storage shell 110. The storage shell 110 is a hollow structure, and there is a gap between at least one inner wall of the storage shell 110 and the outer wall of the core 120. In this embodiment, the bottom wall of the core 120 is connected to the bottom wall of the storage shell 110, and there is a gap between the other walls of the core 120 and the storage shell 110.

[0064] like Figure 5 As shown, the core 120 is provided with a heating channel 105, and as shown in Figure 6 As shown, the core 120 is provided with a channel 121 running through it, and the gap between the core 120 and the storage shell 110 and the channel 121 constitute the material flow channel 106. EC flows in the gap between the core 120 and the storage shell 110 and in the channel 121, and is heated by the heat medium in the heating flow channel 105. In this embodiment, EC can flow from one side of the core 120 to the other side of the core 120 through the channel 121, and is heated by the heat medium in the process, which further improves the heating effect and prevents EC from crystallizing. For example, the shell and the core 120 can be an integrally formed structure to have a higher connection strength.

[0065] See also Figure 6The heat source inlet 101 and the heat source outlet 102 are both provided on the side wall of the storage shell 110, and the heat source inlet 101 and the inlet of the heating channel 105 and the heat source outlet 102 and the outlet of the heating channel 105 are both connected by pipelines, so that the heat medium does not flow into between the core 120 and the storage shell 110, so as not to mix with the EC. For example, the heat source inlet 101 and the heat source outlet 102 can be provided on two opposite side walls of the storage shell 110, so that the heat source flows in from one side of the core 120 and flows out from the other side, making full use of the heat of the heat medium.

[0066] In this embodiment, the first material inlet 103 and the first material outlet 104 are both disposed in the storage housing 110. In order to fully utilize the gravitational potential energy of EC, Figure 3 and Figure 5 As shown, the first material inlet 103 is disposed at the top of the storage device 100 , and the first material outlet 104 is disposed at the bottom of the storage device 100 , so as to facilitate the smooth outflow of EC.

[0067] In some optional embodiments, such as Figure 5 and Figure 6 As shown, the heating channel 105 is a serpentine channel, so that the flow path of the heat medium in the core 120 can be longer, thereby allowing the heat medium and EC to have a longer heat exchange time, thereby improving the heating effect on the EC. The heat medium also transfers heat to the core 120, so that the temperature of the entire core 120 can be higher, which is convenient for heating the EC in the gap between the core 120 and the storage shell 110, thereby improving the overall heating effect of the storage device 100.

[0068] For example, Figure 6 As shown, the serpentine flow channel includes a plurality of sub-flow channels 1051 which are sequentially arranged along a first direction X and connected end to end. A channel 121 is provided between each of two adjacent sub-flow channels 1051 in the first direction X. On the one hand, the number of channels 121 is large, so that the EC can smoothly flow from one side of the core 120 to the other side of the core 120, thereby preventing the EC from being blocked. On the other hand, the heat medium in two adjacent sub-flow channels 1051 in the first direction X can heat the EC in the channel 121 therebetween, thereby achieving the heating of a small amount of EC, avoiding the heating blind area, and further improving the heating effect of the EC.

[0069] Alternatively, if Figure 4As shown, the storage shell 110 is provided with a first cavity 107 and a second cavity 108 located on both sides of the core 120 in the second direction Y. The first cavity 107 is connected with the second cavity 108 through a channel 121, and the first material inlet 103 is provided on the portion of the storage shell 110 forming the first cavity 107, so that the EC directly enters the first cavity 107. It should be noted that the second direction Y is perpendicular to the first direction X, and both the first direction X and the second direction Y are perpendicular to the vertical direction.

[0070] In some optional embodiments, the first material outlet 104 is disposed on the portion of the storage shell 110 that forms the second chamber 108 , and EC is heated during the process of flowing from the first chamber 107 to the second chamber 108 through the channel 121 to prevent crystallization.

[0071] In some other optional embodiments, the bottom wall of the material storage device 100 is provided with a through hole connecting the first material outlet 104 and the channel 121, and the EC in the first cavity 107 and the EC in the second cavity 108 can flow into the channel 121, and the material in the channel 121 can flow directly through the through hole to the first material outlet 104. In this embodiment, one channel 121 among the multiple channels 121 is directly connected to the through hole, and the EC in the other channels 121 first flows into the second cavity 108, and then flows through the second cavity 108 to the channel 121 directly connected to the through hole, and then flows out.

[0072] Optionally, the heat source inlet 101 and the heat source outlet 102 are disposed on two opposite side walls of the storage device 100 in a first direction X, and the first direction X may be a length direction of the storage device 100. Figure 6 As shown, the heat source inlet 101 is closer to the bottom of the storage device 100 than the heat source outlet 102, that is, the heat source inlet 101 is located below the heat source outlet 102, ensuring that the heat medium enters from the bottom and exits from the top, ensuring that the heating channel 105 is full of heat medium, and improving the heating efficiency. For example, conventional lithium battery pole piece production line coating machines are all steam heated, so the heating channel 105 in this embodiment can heat the EC in the material channel 106 by means of the coating steam pipeline, that is, the heat medium is steam, saving costs, of course, it can also be heated by circulating heat transfer oil, that is, the heat medium is heat transfer oil, which is not limited in this embodiment.

[0073] Alternatively, if Figure 1As shown, the storage device 100 is provided with an air suction port 109, specifically, the air suction port 109 is arranged on the top wall of the storage shell 110. The air suction port 109 is connected to an external vacuum pumping device, and the gas in the storage device 100 can be sucked through the air suction port 109 to form a negative pressure in the storage shell 110, and then EC is sucked into the storage shell 110 through the first material inlet 103, thereby realizing automatic loading of the storage device 100, further reducing the steps of manual participation, and reducing the labor intensity.

[0074] Further optionally, if Figure 1 As shown, a vacuum pneumatic valve 700 is installed at the air extraction port 109. After the vacuum pneumatic valve 700 is opened, the feed pneumatic valve installed at the first material inlet 103 is opened synchronously to start the negative pressure feeding mode of EC.

[0075] Optionally, see Figure 1 The storage device 100 further includes a first pressure relief valve port 10a, a liquid level sensor 10b, a second pressure sensor 10c and a temperature sensor 10d. The first pressure relief valve port 10a, the liquid level sensor 10b, the second pressure sensor 10c and the temperature sensor 10d are all arranged on the storage housing 110. The first pressure relief valve port 10a, the liquid level sensor 10b and the second pressure sensor 10c are arranged on the top wall of the storage housing 110, and the temperature sensor 10d is arranged on the side wall of the housing.

[0076] The temperature sensor 10d is used to monitor the temperature of the EC in the storage shell 110. When the temperature is low, the steam pipeline is turned on to heat the steam so that the steam in the heating flow channel 105 becomes liquid and forms a linkage with the steam pipeline.

[0077] The liquid level sensor 10b is preferably a non-contact ultrasonic liquid level sensing structure to avoid misjudgment of the liquid level due to adhesion to the crystallized EC. When the liquid level is too low, the operator will be reminded to replenish the raw materials in time, and when the liquid level is too high, the feeding will be stopped. At the same time, if there is no requirement for cost, in some other feasible embodiments, a weighing module 230 can be used instead of the ultrasonic liquid level sensing structure to detect the amount of EC in the storage shell 110 by detecting the weight change of the storage shell 110, which will have better stability.

[0078] The second pressure sensor 10c is used to monitor the positive and negative pressure values ​​inside the storage shell 110. In the static state, as the heating channel 105 is heated, the positive pressure value inside the storage shell 110 will increase. The second pressure sensor 10c detects and sets an upper limit value. When the upper limit value is exceeded, the first pressure relief valve port 10a will automatically open to release the pressure of the storage shell 110 to ensure the safety of the feeding process.

[0079] Optionally, the feeding equipment further includes a second bracket 600 , and the storage device 100 is disposed on the second bracket 600 .

[0080] In this embodiment, Figure 2 As shown, the metering device 200 includes a discharge pipe 210, a metering tank 220 and a weighing module 230. The metering tank 220 is connected to the storage device 100 through the discharge pipe 210, that is, one end of the discharge pipe 210 is connected to the inlet of the metering tank 220, and the other end is connected to the first material outlet 104 of the storage device 100. EC flows out of the first material outlet 104 and flows into the metering tank 220 through the discharge pipe 210. The weighing module 230 is used to weigh the metering tank 220. Since the density of EC is a fixed value, by weighing the metering tank 220, a preset amount (i.e., a preset volume) of EC can be input into the slurry.

[0081] Alternatively, if Figure 2 or Figure 7 As shown, the metering device 200 also includes a controller (not shown), a first pressure sensor 240, an inlet regulating valve 250, and a first discharge regulating valve 260. The first pressure sensor 240, the inlet regulating valve 250, and the first discharge regulating valve 260 are all connected to the controller, and the controller controls the opening and closing of the inlet regulating valve 250 and the first discharge regulating valve 260. The first pressure sensor 240 is used to detect the pressure in the metering tank 220, and transmits the detected pressure signal to the controller, and the controller controls the opening and closing of the inlet regulating valve 250 and the first discharge regulating valve 260 according to the pressure signal.

[0082] The inlet regulating valve 250 is arranged at the inlet of the metering tank 220, and the first discharge regulating valve 260 is arranged at the outlet of the metering tank 220. The metering tank 220 is provided with a second material inlet 222 and a second material outlet 223, the inlet regulating valve 250 is arranged at the second material inlet 222, the first discharge regulating valve 260 is arranged at the second material outlet 223, and the metering tank 220 is provided with a first charging port 221, the first charging port 221 is connected to an external gas source, and gas can be charged into the metering tank 220 through the first charging port 221, and the gas is exemplified as nitrogen.

[0083] When EC is input into the metering tank 220 , the inlet regulating valve 250 is opened, the first discharge regulating valve 260 is closed, and a preset amount of EC is input into the metering tank 220 . After the input is completed, the inlet regulating valve 250 is closed.

[0084] When the inlet regulating valve 250 and the first discharge regulating valve 260 are both in the closed state, after the metering tank 220 is inflated through the first charging port 221, the metering tank 220 is held back, and the pressure inside it increases. The first pressure sensor 240 transmits the pressure of the metering tank 220 to the controller. When the controller determines that the pressure inside the metering tank 220 reaches a certain value, the first discharge regulating valve 260 is controlled to open, so that the EC in the metering tank 220 flows smoothly into the slurry under the drive of high pressure, and a preset amount of EC is added to the slurry. In this embodiment, the weighing module 230 can be connected to the controller to provide a weight signal to the controller.

[0085] Further optionally, the metering device 200 further includes a second discharge regulating valve 270, and the controller controls the opening and closing of the second discharge regulating valve 270. The second discharge regulating valve 270 is disposed at one end of the discharge pipe 210 close to the storage device 100, and a second gas charging port 211 is provided on the discharge pipe 210. The second gas charging port 211 is disposed downstream of the second discharge regulating valve 270 and is located at one end of the discharge pipe 210 close to the storage device 100. The second gas charging port 211 is connected to an external gas source, and gas can be charged into the discharge pipe 210 through the second gas charging port 211 to purge the discharge pipe 210, so as to prevent EC from being retained in the discharge pipe 210 or crystallizing in the discharge pipe 210 and clogging the discharge pipe 210.

[0086] In this embodiment, the second charging port 211 is arranged downstream of the second discharge regulating valve 270, so that when the second discharge regulating valve 270 is in a closed state, it will not affect the charging through the second charging port 211. It should also be noted that the second charging port 211 is located at one end of the discharge pipe 210 close to the storage device 100, so that the gas charged into the second charging port 211 can purge the EC in the discharge pipe 210 to prevent the residual EC in the discharge pipe 210 from crystallizing due to the low temperature. In this embodiment, the second charging port 211 is arranged close to the first discharge regulating valve 260, and the distance between the two is small.

[0087] Alternatively, if Figure 7As shown, the feeding device also includes a first bracket 300. There are multiple weighing modules 230, and the multiple weighing modules 230 are arranged on the first bracket 300 at intervals. For example, the multiple weighing modules 230 are evenly and spaced along the circumference of the metering tank 220 on the first bracket 300. The metering tank 220 is supported on multiple weighing modules 230, which improves the stability of the support of the metering tank 220 and ensures the accuracy of weighing. Multiple weighing modules 230 weigh the metering tank 220 at the same time, and the controller determines when to control the second discharge adjustment module to close in combination with the weighing data of each weighing module 230. For example, there are currently three weighing modules 230 used in the transportation process of the lithium battery industry, one is installed every 120°, and three weighing modules 230 are installed in a circle, which can meet the stability of the triangle and avoid installation interference caused by too many feet of the metering tank 220. In theory, it is also feasible to install four weighing modules 230.

[0088] For example, the longitudinal section of the metering tank 220 is conical, that is, the metering tank 220 is a structure that is larger at the top and smaller at the bottom. The first bracket 300 is provided with a mounting hole (not shown), and the metering tank 220 is inserted into the mounting hole. The top of the metering tank 220 is provided with a feed port, and the bottom of the metering tank 220 is provided with a discharge port. The top-in and bottom-out structure facilitates the outflow of EC. In addition, the gas enters from the top of the metering tank 220 so that pressure can be applied to the EC from above the EC, which facilitates the EC to be pressed out of the metering tank 220.

[0089] In this embodiment, in order to prevent the EC in the metering tank 220 from crystallizing, the metering device 200 further includes a heating component (not shown) disposed outside the metering tank 220, and the heating component is used to heat the metering tank 220 to heat the EC in the metering tank 220. The heating component may be a heating wire, a heating pipe, etc., which is not limited in this embodiment.

[0090] It should be noted that the first pressure sensor 240 monitors the pressure value under three states. The first is that when the material storage device 100 is unloading, the pressure value of the metering tank 220 reaches the upper limit, which will link the second pressure relief valve port 290 on the metering tank 220 to relieve the pressure of the metering tank 220; the second is the static state, the metering tank 220 is in a heating state (heated by the heating component) and the pressure reaches the upper limit, which will link the second pressure relief valve port 290 to relieve the pressure; the third is that when EC is transported to the glue making machine (i.e., added to the slurry), the inflation valve 280 installed on the first inflation port 221 will open to inflate the metering tank 220 with nitrogen and hold the pressure, and it can only be opened when the set pressure value is reached, so that EC is transported to the glue making machine. In this embodiment, the metering tank 220 is also provided with a temperature detection structure, which is linked with the heating component through the temperature detection structure to ensure that the EC in the metering tank 220 is in a liquid state and will not crystallize. For example, the temperature detection structure can be a temperature sensor.

[0091] Optional, such as Figure 2 As shown, the discharge pipe 210 is tilted, and the end of the discharge pipe 210 close to the storage device 100 is located above the end of the discharge pipe 210 close to the metering tank 220. Compared with the horizontal setting, when EC flows in the discharge pipe 210, it can flow to the metering tank 220 under the action of gravity, and will not be retained in the discharge pipe 210, thereby ensuring the fluidity of EC; compared with the vertical setting, the weighing interference of the storage device 100 on the metering tank 220 can be reduced to ensure the accuracy of weighing. It should be noted that in order to ensure the fluidity of EC in the discharge pipe 210, the discharge pipe 210 can be heated or insulated. For example, since the length of the discharge pipe 210 is short, the outer wall of the discharge pipe 210 is coated with thermal insulation cotton (either thermal insulation material) to ensure the temperature of EC in the discharge pipe 210, thereby ensuring the fluidity of EC and preventing EC in the discharge pipe 210 from crystallizing.

[0092] Alternatively, if Figure 1 As shown, the feeding device also includes a material heating device 400 and a first material delivery pipe 500. The material heating device 400 is used to heat a material tank (not shown) containing a first substance, one end of the first material delivery pipe 500 is inserted into the material tank, and the other end is connected to the first material inlet 103 of the storage device 100. In this embodiment, the first material delivery pipe 500 is coated with a heat preservation structure, and the heat preservation structure is used to insulate the first material delivery pipe 500 to prevent the heat of EC from passing through the first material delivery pipe 500, thereby ensuring the temperature of EC in the first material delivery pipe 500, thereby ensuring the fluidity of EC and preventing the EC in the first material delivery pipe 500 from crystallizing.

[0093] Alternatively, if Figure 2 As shown, the feeding device further includes a second feeding pipe 820 and a third discharge regulating valve 830. One end of the second feeding pipe 820 is in communication with the metering device 200, and specifically, the second feeding pipe 820 is connected to the first discharge regulating valve 260. The third discharge regulating valve 830 is disposed at one end of the second feeding pipe 820 away from the metering device 200 (i.e., the other end of the second feeding pipe 820), and EC can be input into the slurry tank 1 for storing slurry through the second feeding pipe 820.

[0094] In this embodiment, Figure 2As shown, the second conveying pipe 820 is provided with a third air charging port 821, which is connected to an external gas source, and the second conveying pipe 820 can be charged with air through the third air charging port 821 to purge the second conveying pipe 820 and prevent EC from being retained in the second conveying pipe 820. It should be noted that when purging, the first discharge regulating valve 260 and the third discharge regulating valve 830 are closed first, and then the second conveying pipe 820 is charged with air through the third air charging port 821 to hold the pressure in the second conveying pipe 820. When the pressure reaches a certain value, the third discharge regulating valve 830 is opened to achieve the purge of the second conveying pipe 820.

[0095] Alternatively, see Figure 2 The second material delivery pipe 820 includes a vertical pipe section 824, a horizontal pipe section 822 and a vertical heating pipe section 823 connected in sequence. Among them, the end of the vertical pipe section 824 away from the horizontal pipe section 822 is connected to the metering device 200, and the end of the vertical heating pipe section 823 away from the horizontal pipe section 822 is used to input the first substance into the second substance, that is, the end of the vertical heating pipe section 823 away from the horizontal pipe section 822 is connected to the slurry tank 1, and the vertical heating pipe section 823 can heat the first material located therein to prevent crystallization in the vertical heating pipe section 823. Since the vertical pipe section 824 and the horizontal pipe section 822 are closer to the metering tank 220, the EC with a higher temperature in the metering tank 220 will not crystallize immediately after flowing out, so the vertical pipe section 824 and the horizontal pipe section 822 do not need to heat the EC. Of course, it is understandable that the vertical pipe section 824 and the horizontal pipe section 822 may also be covered with a heating structure or a heat-insulating structure to heat or insulate the EC.

[0096] In this embodiment, the first discharge regulating valve 260 is disposed in the vertical pipe section 824 and upstream of the third charging port 821 so as not to affect the gas supply of the third charging port 821. The third discharge regulating valve 830 is disposed at one end of the vertical heating pipe section 823 away from the horizontal pipe section 822.

[0097] When using the feeding device provided in this embodiment, the material tank is placed in the incoming material heating device 400, so that the incoming material heating device 400 can continuously heat the EC in the material tank. Then, the second discharge regulating valve 270 is closed, the regulating valve at the first material inlet 103 and the regulating valve at the air suction port 109 are opened, and the storage shell 110 is evacuated through the air suction port 109, so that under the action of negative pressure, the EC in the material tank is pumped into the material flow channel 106 of the storage shell 110. In this process, the heat medium can be controlled to enter the heating flow channel 105 from the heat source inlet 101, so that the heat medium in the heating flow channel 105 heats the EC. When the EC in the storage shell 110 reaches a certain amount, the regulating valve at the air suction port 109 and the regulating valve at the first material inlet 103 can be closed at the same time.

[0098] When EC needs to be input into the metering device 200, the second discharge regulating valve 270 and the inlet regulating valve 250 are opened, the first discharge regulating valve 260 is closed, and EC is input into the metering tank 220 through the discharge pipe 210. The weighing module 230 weighs the metering tank 220. When the weight of the metering tank 220 increases to a preset value, the amount of EC in the corresponding metering tank 220 is the preset amount. At this time, the second discharge regulating valve 270 is closed, and the regulating valve at the second gas charging port 211 is opened, and the inlet regulating valve 250 is closed to input gas (usually nitrogen) into the discharge pipe 210 through the second gas charging port 211. When gas is input into the discharge pipe 210, the discharge pipe 210 is held under pressure. After a preset time, the inlet regulating valve 250 is opened so that all EC in the discharge pipe 210 enters the metering tank 220 under the pressure to prevent crystallization in the discharge pipe 210. It should be noted that when the weighing module 230 weighs the metering tank 220, the EC in the discharge pipe 210 can be estimated and taken into account to reduce the error. In practical applications, the EC in the discharge pipe 210 is relatively small and usually has little effect on the preset amount of EC.

[0099] Afterwards, when the metering tank 220 is opened for transportation, the inlet regulating valve 250 is closed, the charging valve 280 on the first charging port 221 is opened, and the metering tank 220 begins to be filled with gas (usually nitrogen). When the gas pressure in the metering tank 220 reaches a preset value, the first discharge regulating valve 260 and the third discharge regulating valve 830 are opened synchronously, or the third discharge regulating valve 830 is opened first and the first discharge regulating valve 260 is opened later. The EC in the metering tank 220 is transported to the slurry tank 1 through the second delivery pipe 820 under high pressure.

[0100] At the end of the conveying, the first discharge regulating valve 260 and the inlet regulating valve 250 are both closed, and then the empty state of the metering tank 220 is inflated and pressured through the first inflation port 221. After that, the first discharge regulating valve 260 is opened to purge the metering tank 220 to ensure that there is less material residue in the metering tank 220. After the purge of the metering tank 220 is completed, the first discharge regulating valve 260 and the third discharge regulating valve 830 are both closed, and the regulating valve at the third inflation port 821 is opened to inflate and pressure the second conveying pipe 820. After that, the third discharge regulating valve 830 is opened to purge the second conveying pipe 820 to ensure that there is less residue in the second conveying pipe 820. It should be noted that the horizontal pipe section 822 is installed horizontally to reduce the interference of the horizontal pipe section 822 on the weighing module 230 of the metering tank 220. The horizontal pipe section 822 can be a hose, which is coated with heat insulation cotton (any heat insulation material) to ensure the temperature of EC in the horizontal pipe section 822 and prevent EC from crystallizing in the horizontal pipe section 822. The vertical heating pipe section 823 is a stainless steel seamless steel pipe inside and coated with a heating wire (any heat conductive material) outside, which can heat the vertical heating pipe section 823 and ensure that EC does not crystallize in the pipeline during the transportation process.

[0101] The feeding equipment provided in this embodiment also has the following advantages:

[0102] 1. A two-stage storage mode of a storage device 100 and a metering device 200 is adopted, with a vertical height difference. The first material falls to form a gravity drop effect, and the residual amount in the pipeline is less;

[0103] 2. A heating channel 105 is arranged in the material storage device 100, and the heat medium can flow up and down in the heating channel 105, so that the contact area with the first material is large and the heating effect is good;

[0104] 3. The metering tank 220 is supported on the weighing module 230, and the discharge pipe 210 is equipped with an inlet regulating valve 250 and a second discharge regulating valve 270, so that the amount of the first substance delivered by the storage device 100 to the metering tank 220 is quantitative, and the quantitative input of the first substance into the metering tank 220 is realized with high accuracy. The second delivery pipe 820 is equipped with a first discharge regulating valve 260 and a third discharge regulating valve 830, which can automatically adjust the switch angle of the third discharge regulating valve 830 according to the amount of material dropped, so as to realize the precise control of the material drop. After the drop is completed, the metering tank 220 is purged with nitrogen to ensure that there is no residual first substance in the metering tank 220;

[0105] 4. A heating component is disposed outside the metering tank 220 to continuously heat the first substance to ensure that the first substance is always liquid;

[0106] 5. When the metering tank 220 is conveying, the metering tank 220 is filled with nitrogen and pressurized, and the first discharge regulating valve 260 is opened, so that the first substance can quickly flow out into the slurry tank (or glue making machine). When the conveying is finished, the empty metering tank 220 is pressurized and purged, and the conveying pipeline (i.e., the discharge pipe 210 and the second conveying pipe 820) are equipped with a charging port to purge the pipeline. The conveying pipeline is equipped with a heating device to ensure that there is no residual material in the conveying pipeline and it is cleaner.

[0107] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A feeding device, characterized in that: include: A material storage device (100), the material storage device (100) being used to store a first substance having a melting point lower than a preset temperature and being capable of heating the first substance; a metering device (200), the metering device (200) being in communication with the material storage device (100), and having a height difference between a setting position of the metering device (200) and a setting position of the material storage device (100), so that the first substance in the material storage device (100) can flow into the metering device (200) under the action of its own gravity, and the metering device (200) can input a preset amount of the first substance into the second substance; The metering device (200) comprises a discharge pipe (210), a metering tank (220) and a weighing module (230); the metering tank (220) is connected to the storage device (100) via the discharge pipe (210); the weighing module (230) is used to weigh the metering tank (220) so as to input a preset amount of the first substance into the second substance; the discharge pipe (210) is arranged at an angle, and an end of the discharge pipe (210) close to the storage device (100) is located above an end of the discharge pipe (210) close to the metering tank (220).

2. The feeding device according to claim 1, characterized in that: The material storage device (100) is provided with a heat source inlet (101), a heat source outlet (102), a first material inlet (103) and a first material outlet (104); a heating flow channel (105) and a material flow channel (106) are provided in the material storage device (100); the heating flow channel (105) is communicated with the heat source inlet (101) and the heat source outlet (102); the material flow channel (106) is communicated with the first material inlet (103) and the first material outlet (104); and the heat medium in the heating flow channel (105) is used to heat the first substance in the material flow channel (106).

3. The feeding device according to claim 2, characterized in that: The material storage device (100) comprises a storage shell (110) and a core (120) disposed in the storage shell (110); the core (120) is provided with the heating flow channel (105); and the core (120) is provided with a channel (121); the gap between the core (120) and the storage shell (110) and the channel (121) constitute the material flow channel (106); The heat source inlet (101) and the heat source outlet (102) are both provided on the side wall of the storage shell (110), and the heat source inlet (101) and the inlet of the heating channel (105) as well as the heat source outlet (102) and the outlet of the heating channel (105) are connected via pipelines, and the first material inlet (103) and the first material outlet (104) are both provided in the storage shell (110).

4. The feeding device according to claim 3, characterized in that: The heating flow channel (105) is a serpentine flow channel.

5. The feeding device according to claim 2, characterized in that: The heat source inlet (101) and the heat source outlet (102) are arranged on two opposite side walls of the material storage device (100) in a first direction (X), and the heat source inlet (101) is closer to the bottom of the material storage device (100) than the heat source outlet (102); The first material inlet (103) is arranged at the top of the material storage device (100), and the first material outlet (104) is arranged at the bottom of the material storage device (100).

6. The feeding device according to any one of claims 1 to 5, characterized in that: The material storage device (100) is provided with a suction port (109), through which the gas in the material storage device (100) can be sucked to form a negative pressure.

7. The feeding device according to claim 1, characterized in that: The metering device (200) further includes a controller, a first pressure sensor (240), an inlet regulating valve (250) and a first discharge regulating valve (260); The first pressure sensor (240), the inlet regulating valve (250) and the first discharge regulating valve (260) are all connected to the controller, and the controller controls the opening and closing of the inlet regulating valve (250) and the first discharge regulating valve (260). The first pressure sensor (240) is used to detect the pressure in the metering tank (220). The inlet regulating valve (250) is arranged at the inlet of the metering tank (220), and the first discharge regulating valve (260) is arranged at the outlet of the metering tank (220). The metering tank (220) is provided with a first inflation port (221), and the first inflation port (221) is connected to an external gas source.

8. The feeding device according to claim 7, characterized in that The metering device (200) further comprises a second discharge regulating valve (270), the controller controls the opening and closing of the second discharge regulating valve (270), and the second discharge regulating valve (270) is arranged at one end of the discharge pipe (210) close to the storage device (100), and a second air charging port (211) is provided on the discharge pipe (210), and the second air charging port (211) is arranged downstream of the second discharge regulating valve (270) and is located at one end of the discharge pipe (210) close to the storage device (100), and the second air charging port (211) is connected to an external air source.

9. The feeding device according to claim 1, characterized in that: The feeding equipment further comprises a first bracket (300), a plurality of the weighing modules (230) are provided, the plurality of the weighing modules (230) are arranged at intervals on the first bracket (300), and the metering tank (220) is supported on the plurality of the weighing modules (230).

10. The feeding device according to claim 9, characterized in that The longitudinal section of the metering tank (220) is conical, the first bracket (300) is provided with a mounting hole, the metering tank (220) is inserted into the mounting hole, the top of the metering tank (220) is provided with a feed port, and the bottom of the metering tank (220) is provided with a discharge port.

11. The feeding device according to claim 1, characterized in that: The metering device (200) further comprises a heating component arranged outside the metering tank (220), wherein the heating component is used to heat the metering tank (220).

12. The feeding device according to any one of claims 1 to 5, characterized in that: The feeding equipment also includes a material heating device (400) and a first material delivery pipe (500). The material heating device (400) is used to heat a material tank containing the first substance. One end of the first material delivery pipe (500) is inserted into the material tank, and the other end is connected to the material storage device (100). The first material delivery pipe (500) is coated with a heat preservation structure.

13. The feeding device according to any one of claims 1 to 5, characterized in that: The feeding device also includes a second feed pipe (820) and a third discharge regulating valve (830), one end of the second feed pipe (820) is connected to the metering device (200), and the third discharge regulating valve (830) is arranged at the other end of the second feed pipe (820), and a third inflation port (821) is opened on the second feed pipe (820), and the third inflation port (821) is connected to an external air source.

14. The feeding device according to claim 13, characterized in that The second material conveying pipe (820) comprises a vertical pipe section (824), a horizontal pipe section (822) and a vertical heating pipe section (823) which are connected in sequence, wherein one end of the vertical pipe section (824) away from the horizontal pipe section (822) is connected to the metering device (200), and one end of the vertical heating pipe section (823) away from the horizontal pipe section (822) is used to input the first substance into the second substance, and the vertical heating pipe section (823) can heat the material located therein; The first discharge regulating valve (260) of the metering device (200) is arranged on the vertical pipe section (824) and is located upstream of the third inflation port (821), and the third discharge regulating valve (830) is arranged on one end of the vertical heating pipe section (823) away from the horizontal pipe section (822).

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