Energy-saving lithium battery capacity grading system and temperature control method

Abstract

The application provides an energy-saving lithium battery capacity grading system and a temperature control method in the technical field of battery capacity grading, and the system comprises: a capacity grading workshop, the inner wall of which is provided with an air conditioner air duct and two equipment air ducts at the top; four groups of capacity grading equipment groups are arranged in the capacity grading workshop; the interval between two groups of capacity grading equipment groups is just below one equipment air duct; the capacity grading equipment group comprises a plurality of integrated capacity grading equipment; a constant-temperature room is connected with the two equipment air ducts at the input end and connected with the air conditioner air duct at the output end; two waste heat recovery pipes are respectively connected with one equipment air duct; a compression condensing unit is arranged; a plurality of water inlet pipes are respectively connected with the compression condensing unit at one end through a proportional adjusting valve and connected with the integrated capacity grading equipment at the other end; a plurality of water return pipes are connected with the compression condensing unit at one end and connected with the integrated capacity grading equipment at the other end. The application has the advantages that the manufacturing cost and energy consumption of the capacity grading system are reduced, and the capacity grading cost of the lithium battery is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery capacity grading, and particularly relates to an energy-saving lithium battery capacity grading system and a temperature control method. BACKGROUND

[0002] After lithium battery production is completed, the lithium battery needs to be subjected to formation and capacity grading. Formation is to perform initial charging and discharging on the lithium battery to activate internal chemical substances, and capacity grading is to sort the capacity and quality grade of the lithium battery. The formation and the capacity grading have different requirements for the environmental temperature. The formation requires that the temperature of the environment where the lithium battery is located is controlled at 45±5 DEG C, and the capacity grading requires that the temperature of the environment where the lithium battery is located is controlled at 25±5 DEG C.

[0003] A conventional capacity grading device is designed by extending a formation device, and is composed of two modules of a power supply cabinet and a pressing bed cabinet. The heat generated by the power supply cabinet and the pressing bed cabinet is dissipated by respective heat dissipation fans. The conventional capacity grading device has the following disadvantages: 1. The split design has a large floor space, long and disordered cables, increased power consumption, and high cost due to high difficulty in assembly, debugging and maintenance; 2. Different environmental temperatures and the number of lithium batteries require different air volume of the heat dissipation fan, which increases the non-standard nature of the capacity grading device; and 3. A large amount of useless heat is generated in the capacity grading process, resulting in waste of energy.

[0004] Therefore, how to provide an energy-saving lithium battery capacity grading system and a temperature control method to reduce the capacity grading cost of the lithium battery becomes a technical problem to be solved. SUMMARY

[0005] The present application aims to provide an energy-saving lithium battery capacity grading system and a temperature control method to reduce the capacity grading cost of the lithium battery.

[0006] In a first aspect, the present application provides an energy-saving lithium battery capacity grading system, comprising:

[0007] a capacity grading workshop, an inner wall of which is provided with an air conditioning air duct, and a top end of which is provided with two equipment air ducts;

[0008] four groups of capacity grading devices, which are arranged in the capacity grading workshop; the interval between two groups of the capacity grading devices is located directly below one of the equipment air ducts; each group of the capacity grading devices comprises a plurality of integrated capacity grading devices stacked from bottom to top;

[0009] a constant-temperature room, an input end of which is communicated with the two equipment air ducts, and an output end of which is communicated with the air conditioning air duct;

[0010] two waste heat recovery pipes, which are respectively communicated with one of the equipment air ducts;

[0011] a compression condensing unit;

[0012] A plurality of water inlet pipes, one end of each of which is communicated with the output end of the compression condensing unit through a proportional regulating valve, and the other end of each of which is communicated with the integrated capacity distribution device;

[0013] A plurality of water return pipes, one end of each of which is communicated with the input end of the compression condensing unit, and the other end of each of which is communicated with the integrated capacity distribution device.

[0014] Further, the air conditioner air duct is provided with:

[0015] A plurality of air conditioner outlets.

[0016] Further, the integrated capacity distribution device comprises:

[0017] A cabinet body;

[0018] A lifting mechanism arranged in the cabinet body;

[0019] At least one probe module mounted on the lifting end of the lifting mechanism;

[0020] At least one power supply module arranged in the cabinet body;

[0021] At least one power module arranged in the cabinet body, one end of which is connected with the power supply module, and the other end of which is connected with the probe module;

[0022] A plurality of air suction fans arranged on one side of the cabinet body;

[0023] A plurality of air exhaust fans arranged on the other side of the cabinet body;

[0024] A heat exchanger arranged in the cabinet body and located on the side of the air suction fan, and communicated with the water inlet pipe and the water return pipe.

[0025] Further, it further comprises:

[0026] A industrial computer connected with the integrated capacity distribution device, the compression condensing unit, the proportional regulating valve and the drain valve.

[0027] Further, it further comprises:

[0028] A plurality of environmental temperature sensors connected with the industrial computer;

[0029] A plurality of pressure sensors connected with the industrial computer;

[0030] A plurality of smoke sensors connected with the industrial computer.

[0031] In the second aspect, the application provides an energy-saving type lithium battery capacity distribution system temperature control method, comprising the following steps:

[0032] Step S10, the industrial computer sets a temperature range threshold, monitors the environment temperature inside the distribution system in real time, when the environment temperature is greater than or equal to the temperature range threshold, step S20 is entered; when the environment temperature is less than the temperature range threshold, step S30 is entered;

[0033] Step S20, the industrial computer controls the variable speed of the suction fan and the exhaust fan to regulate the temperature of the integrated distribution equipment, controls the compressed condensing unit to provide cooling water for the integrated distribution equipment, and exchanges heat through the heat exchanger;

[0034] Step S30, the industrial computer controls the variable speed of the suction fan and the exhaust fan to regulate the temperature of the integrated distribution equipment.

[0035] Further, the step S20 specifically comprises:

[0036] Step S21, the cold air in the air conditioning air duct is blown to the inside of the distribution workshop through the air conditioning outlet;

[0037] Step S22, the cooling water of the compressed condensing unit is input into the heat exchanger through the water inlet pipe, the heat exchanger cools the surrounding air based on the input cooling water, and the cooled cooling water is flowed back to the compressed condensing unit through the backwater pipe;

[0038] Step S23, the suction fan sucks the cold air into the inside of the integrated distribution equipment, cools the probe module, the power module and the power module, and then is discharged by the exhaust fan;

[0039] Step S24, a part of the hot air discharged by the integrated distribution equipment is input into the waste heat recovery pipe through the equipment air duct to recover heat, and a part of the hot air is input into the air conditioning air duct after temperature adjustment through the constant temperature room.

[0040] Further, the step S30 specifically comprises:

[0041] Step S31, the industrial computer monitors the environment temperature inside the distribution system through the environment temperature sensor, and empties the cooling water of the heat exchanger based on the temperature control requirement;

[0042] Step S32, the cold air in the air conditioning air duct is blown to the inside of the distribution workshop through the air conditioning outlet, the suction fan sucks the cold air into the inside of the integrated distribution equipment, cools the probe module, the power module and the power module, and then is discharged by the exhaust fan;

[0043] Step S33, a part of the hot air discharged by the integrated distribution equipment is input into the waste heat recovery pipe through the equipment air duct to recover heat, and a part of the hot air is input into the air conditioning air duct after temperature adjustment by mixing the outdoor cold air through the constant temperature room.

[0044] The advantages of the present application are:

[0045] By setting the integrated lifting mechanism, probe module, power module, power module, suction fan, exhaust fan and heat exchanger of the integrated type distribution equipment, the traditional split type structure is replaced by the integrated type structure, which not only reduces the occupied space, but also facilitates stacking, and shortens the cable line, reduces the power loss, assembly, debugging, maintenance difficulty; The heat cycle of air cooling heat dissipation is composed of suction fan, exhaust fan, equipment air duct, constant temperature room and air conditioning air duct, and the heat cycle of water cooling heat dissipation is composed of compression condensing unit, water inlet pipe, heat exchanger and backwater pipe, that is, the combination of air cooling and water cooling greatly improves the heat dissipation effect, reduces the working pressure of suction fan and exhaust fan, and reduces the non-standard of distribution equipment; And part of the heat generated during the distribution process is recycled through the equipment air duct and waste heat recovery pipe in turn, reducing energy waste, and ultimately greatly reducing the cost of lithium battery distribution. BRIEF DESCRIPTION OF DRAWINGS

[0046] The application will be further described below with reference to the embodiments and accompanying drawings.

[0047] Fig. 1 It is a structure diagram of an energy-saving lithium battery distribution system.

[0048] Fig. 2 It is a structure diagram of an integrated distribution equipment.

[0049] Fig. 3 It is a flow chart of a temperature control method of an energy-saving lithium battery distribution system.

[0050] Label explanation:

[0051] 100- an energy-saving lithium battery distribution system, 1- a distribution workshop, 2- a distribution equipment group, 3- a constant temperature room, 4- a waste heat recovery pipe, 5- a compression condensing unit, 6- a water inlet pipe, 7- a backwater pipe, 11- an air conditioning air duct, 12- an equipment air duct, 111- an air conditioning outlet, 21- an integrated distribution equipment, 61- a proportional regulating valve, 211- a cabinet body, 212- a lifting mechanism, 213- a probe module, 214- a power module, 215- a power module, 216- a suction fan, 217- an exhaust fan, 218- a heat exchanger. DETAILED DESCRIPTION

[0052] The technical scheme in the embodiment of the application has the following general idea: the integrated distribution equipment 21 replaces the traditional split type structure, reduces the occupied space, shortens the cable line, reduces the power loss, assembly, debugging, maintenance difficulty; The combination of air cooling and water cooling improves the heat dissipation effect, reduces the working pressure of suction fan 216 and exhaust fan 217, and reduces the non-standard of distribution equipment; And part of the heat generated during the distribution process is recycled through the waste heat recovery pipe 4 to reduce energy waste, thereby reducing the cost of lithium battery distribution.

[0053] Referring to Figs. 1 to 3 The preferred embodiment of the energy-saving lithium battery capacity grading system 100 comprises:

[0054] A capacity grading workshop 1, the inner wall of which is provided with an air conditioning air duct 11, and the top end of which is provided with two equipment air ducts 12; the capacity grading workshop 1 is used for bearing the lithium battery capacity grading system 100; the air conditioning air duct 11 is communicated with an air conditioning system (not shown in the figure);

[0055] Four groups of capacity grading equipment groups 2 are arranged in the capacity grading workshop 1; the interval between two groups of the capacity grading equipment groups 2 is just located directly below one equipment air duct 12; each group of the capacity grading equipment groups 2 comprises a plurality of integrated capacity grading equipment 21 stacked from bottom to top;

[0056] A constant-temperature room 3, the input end of which is communicated with two equipment air ducts 12, and the output end of which is communicated with the air conditioning air duct 11, is used for adjusting the temperature of air;

[0057] Two waste heat recovery pipes 4 are respectively communicated with one equipment air duct 12, and are used for recycling the heat of hot air, for example, recycling to a formation workshop (not shown in the figure) and applying to air conditioning of the formation workshop, or air energy heat pump of factory dormitory and canteen;

[0058] A compression condensing unit 5 is used for generating and circulating cooling water;

[0059] A plurality of water inlet pipes 6 are respectively communicated at one end with the output end of the compression condensing unit 5 through a proportional adjusting valve 61, and are communicated at the other end with the integrated capacity grading equipment 21; the proportional adjusting valve 61 is used for adjusting the proportion of mixed water, and further adjusting the water temperature of cooling water;

[0060] A plurality of water return pipes 7 are respectively communicated at one end with the input end of the compression condensing unit 5, and are communicated at the other end with the integrated capacity grading equipment 21, and are used for the return flow of cooling water after heat exchange.

[0061] The air conditioning air duct 11 is provided with:

[0062] A plurality of air conditioning outlets 111 are used for outputting cold air in the air conditioning air duct 11.

[0063] The integrated capacity grading equipment 21 comprises:

[0064] A cabinet body 211 is used for bearing the integrated capacity grading equipment 21;

[0065] A lifting mechanism 212 is arranged in the cabinet body 211, and is used for linkage of the probe module 213 for lifting;

[0066] At least one probe module 213 is installed at the lifting end of the lifting mechanism 212.

[0067] at least one power module 214 is arranged in the cabinet 211;

[0068] at least one power module 215 is arranged in the cabinet 211, one end is connected with the power module 214, the other end is connected with the probe module 213, for power conversion of the power input by the power module 214, and then charging and discharging is carried out through the probe module 213;

[0069] a plurality of suction fans 216 are arranged on one side of the cabinet 211;

[0070] a plurality of exhaust fans 217 are arranged on the other side of the cabinet 211;

[0071] a heat exchanger 218 is arranged in the cabinet 211, located on the side of the suction fan 216, and communicates with the water inlet pipe 6 and the water return pipe 7, for water cooling.

[0072] Further comprising:

[0073] a work computer (not shown) is connected with the lifting mechanism 212, the power module 214, the power module 215, the suction fan 216, the exhaust fan 217 and the heat exchanger 218, the compression condensing unit 5, the proportional regulating valve 61 and the drain valve 71 of the integrated capacity distribution equipment 21, for controlling the work of the lithium battery capacity distribution system 100, in the specific implementation, as long as the work computer capable of realizing this function is selected from the prior art, it is not limited to the type, and the control program is well known to those skilled in the art, which is obtained by those skilled in the art without creative labor.

[0074] Further comprising:

[0075] a plurality of environmental temperature sensors (not shown) are connected with the work computer, for monitoring the environmental temperature to switch the cooling mode;

[0076] a plurality of pressure sensors (not shown) are connected with the work computer;

[0077] a plurality of smoke sensors (not shown) are connected with the work computer.

[0078] The preferred embodiment of the energy-saving lithium battery capacity distribution system temperature control method of the application comprises the following steps:

[0079] Step S10, the work computer sets a temperature range threshold, and monitors the environmental temperature in the capacity distribution system in real time, when the environmental temperature is greater than or equal to the temperature range threshold, step S20 is entered; when the environmental temperature is less than the temperature range threshold, step S30 is entered;

[0080] Step S20, the industrial computer controls the suction fan and the exhaust fan to regulate the temperature of the integrated cell splitting device, controls the compressed condensing unit to provide cooling water for the integrated cell splitting device, and exchanges heat through the heat exchanger;

[0081] Step S30, the industrial computer controls the suction fan and the exhaust fan to regulate the temperature of the integrated cell splitting device.

[0082] The step S20 specifically comprises:

[0083] Step S21, the cold air in the air conditioner air duct is blown to the inside of the cell splitting workshop through the air conditioner outlet;

[0084] Step S22, the cooling water of the compressed condensing unit is input into the heat exchanger through the water inlet pipe, the heat exchanger cools the surrounding air based on the input cooling water, and the cooled cooling water is flowed back to the compressed condensing unit through the backwater pipe;

[0085] Step S23, the suction fan sucks the cold air into the inside of the integrated cell splitting device, cools the probe module, the power module and the power module, and then discharges the cold air by the exhaust fan;

[0086] Step S24, a part of the hot air discharged by the integrated cell splitting device is input into the waste heat recovery pipe through the equipment air duct to recover heat, and a part of the hot air is input into the air conditioner air duct after temperature adjustment by the constant temperature room.

[0087] The step S30 specifically comprises:

[0088] Step S31, the industrial computer monitors the environment temperature in the cell splitting system through the environment temperature sensor, and empties the cooling water of the heat exchanger based on the temperature control requirement;

[0089] Step S32, the cold air in the air conditioner air duct is blown to the inside of the cell splitting workshop through the air conditioner outlet, the suction fan sucks the cold air into the inside of the integrated cell splitting device, cools the probe module, the power module and the power module, and then discharges the cold air by the exhaust fan;

[0090] Step S33, a part of the hot air discharged by the integrated cell splitting device is input into the waste heat recovery pipe through the equipment air duct to recover heat, and a part of the hot air is input into the air conditioner air duct after temperature adjustment by the constant temperature room and mixing of the outdoor cold air.

[0091] In summary, the advantages of the present application are:

[0092] By setting the integrated lifting mechanism, probe module, power module, power module, suction fan, exhaust fan and heat exchanger of the integrated capacity distribution equipment, the traditional split structure is replaced by the integrated structure, which not only reduces the occupied space, but also facilitates stacking, and shortens the cable, reduces the power loss, assembly, debugging, maintenance difficulty; Through the suction fan, exhaust fan, equipment air duct, constant temperature room, air conditioning air duct to form the heat cycle of air cooling heat dissipation, through the compression condensing unit, water inlet pipe, heat exchanger and backwater pipe to form the heat cycle of water cooling heat dissipation, that is, the combination of air cooling and water cooling greatly improves the heat dissipation effect, reduces the working pressure of the suction fan and the exhaust fan, and reduces the non-standard of the capacity distribution equipment; And part of the heat generated in the capacity distribution process is recycled through the equipment air duct and waste heat recovery pipe in turn, reducing energy waste, ultimately greatly reducing the cost of lithium battery capacity distribution.

[0093] Although the specific embodiments of the present application are described above, those skilled in the art should understand that the specific examples described are only illustrative, not for limiting the scope of the present application, and equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present application should be covered within the scope of the claims of the present application.

Claims

1. An energy-saving lithium battery capacity grading system, characterized in that: The system comprises: a sub-packaging workshop, the inner wall of which is provided with an air conditioning air duct, and the top end of which is provided with two equipment air ducts; four groups of sub-packaging equipment groups, which are arranged in the sub-packaging workshop; the interval between two groups of the sub-packaging equipment groups is just below one of the equipment air ducts; each group of the sub-packaging equipment groups comprises a plurality of integrated sub-packaging equipment stacked from bottom to top; a constant temperature room, the input end of which is communicated with the two equipment air ducts, and the output end of which is communicated with the air conditioning air duct; two waste heat recovery pipes, each of which is communicated with one of the equipment air ducts; a compression condensing unit; a plurality of water inlet pipes, one end of each of which is communicated with the output end of the compression condensing unit through a proportional adjusting valve, and the other end of each of which is communicated with the integrated sub-packaging equipment; a plurality of water return pipes, one end of each of which is communicated with the input end of the compression condensing unit, and the other end of each of which is communicated with the integrated sub-packaging equipment; an industrial computer, which is connected with the integrated sub-packaging equipment, the compression condensing unit, the proportional adjusting valve and a drain valve; the integrated sub-packaging equipment comprises: a cabinet body; a lifting mechanism arranged in the cabinet body; at least one probe module mounted on the lifting end of the lifting mechanism; at least one power module arranged in the cabinet body; at least one power module arranged in the cabinet body, one end of which is connected with the power module, and the other end of which is connected with the probe module; a plurality of air suction fans arranged on one side of the cabinet body; a plurality of air exhaust fans arranged on the other side of the cabinet body; a heat exchanger arranged in the cabinet body and located on the side of the air suction fan, and communicated with the water inlet pipe and the water return pipe; The cold air in the air conditioning air duct is blown to the inside of the sub-packaging workshop through the air conditioning outlet; the cold air is sucked into the inside of the integrated sub-packaging equipment by the air suction fan, and then is exhausted by the air exhaust fan; part of the hot air exhausted by the integrated sub-packaging equipment is input into the waste heat recovery pipe through the equipment air duct for heat recovery, and part of the hot air is input into the constant temperature room through the equipment air duct for temperature adjustment, and then is input into the air conditioning air duct.

2. The energy-saving lithium battery capacity grading system according to claim 1, characterized in that: The air conditioning air duct is provided with: a plurality of air conditioning outlets.

3. The energy-saving lithium battery sorting system according to claim 1, wherein: Further comprising: a plurality of environmental temperature sensors connected with the industrial computer; a plurality of pressure sensors connected with the industrial computer; a plurality of smoke sensors connected with the industrial computer.

4. A temperature control method for an energy-saving lithium battery capacity grading system, characterized in that: The method needs to use the sub-packaging system as claimed in any one of claims 1 to 3, and comprises the following steps: Step S10, the industrial computer sets a temperature range threshold value, and monitors the environmental temperature in the sub-packaging system in real time; when the environmental temperature is greater than or equal to the temperature range threshold value, step S20 is entered; when the environmental temperature is less than the temperature range threshold value, step S30 is entered; Step S20, the industrial computer controls the air suction fan and the air exhaust fan to adjust the temperature of the integrated sub-packaging equipment at variable speed, controls the compression condensing unit to provide cooling water for the integrated sub-packaging equipment, and performs heat exchange through the heat exchanger; Step S30, the industrial computer controls the air suction fan and the air exhaust fan to adjust the temperature of the integrated sub-packaging equipment at variable speed; The step S20 specifically comprises: Step S21, the cold air in the air conditioning air duct is blown to the inside of the sub-packaging workshop through the air conditioning outlet; Step S22, the cooling water of the compression condensing unit is input into the heat exchanger through the water inlet pipe, the heat exchanger cools the surrounding air based on the input cooling water, and the cooled cooling water is flowed back to the compression condensing unit through the backwater pipe; Step S23, the cold air is sucked into the integrated cell production equipment by the suction fan, the probe module, the power module and the power module are cooled, and then the cold air is discharged by the exhaust fan; Step S24, part of the hot air discharged from the integrated cell production equipment is input into the waste heat recovery pipe through the equipment air duct for heat recovery, and part of the hot air is input into the air conditioning air duct after temperature adjustment in the constant temperature room; The step S30 specifically comprises: Step S31, the industrial computer monitors the environment temperature in the cell production system through the environment temperature sensor, and empties the cooling water of the heat exchanger based on the temperature control requirement; Step S32, the cold air in the air conditioning air duct is blown to the inside of the cell production workshop through the air conditioning outlet, the cold air is sucked into the integrated cell production equipment by the suction fan, the probe module, the power module and the power module are cooled, and then the cold air is discharged by the exhaust fan; Step S33, part of the hot air discharged from the integrated cell production equipment is input into the waste heat recovery pipe through the equipment air duct for heat recovery, and part of the hot air is input into the air conditioning air duct after temperature adjustment by mixing the cold air outside the constant temperature room.

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