Safe application scheme of novel long-circulation battery in deep mining of tower mine

Abstract

The invention discloses a safe application scheme of a novel long-circulation battery in deep well mining of a tower mine, and relates to the technical field of batteries, and the technical key points are as follows: on one hand, the liquid absorption rate of positive and negative pole pieces is controlled by regulating and controlling a conductive agent and a wetting agent in positive and negative poles in the positive and negative pole pieces; on the other hand, the pores are regulated and controlled by regulating and controlling the pole piece pores of the active substances in the positive and negative pole pieces in different states (0%, 100% SOC), and the matching of electrolyte absorption in the positive and negative pole pieces in the charging and discharging process of the battery is realized through the regulation and control in the two aspects, so that the problems caused by different electrolyte infiltration degrees of the battery are solved, and the service life of the battery is prolonged. Therefore, the performance of the battery is improved; by developing a novel long-circulation battery system, the safety and stability of operation in a severe environment are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and particularly to a safety application solution of a new long-cycle battery in the deep well mining of Tashan Mine. Background Art

[0002] As a high-risk working environment, coal mines have extremely high requirements for the safety and reliability of equipment. The application of traditional battery systems in coal mines faces many challenges, such as short battery life, low charge and discharge efficiency, poor stability in high-temperature environments, etc. These problems not only affect the normal operation of equipment but may also lead to safety accidents. Especially in deep well coal mines such as Tashan Mine, the environment is complex, with high temperature and high humidity, and traditional battery systems are difficult to meet the long-term and high-intensity operation requirements.

[0003] Although existing battery technologies have improved in energy density and cycle life, there are still potential safety hazards in special environments such as coal mines. For example, batteries are prone to thermal runaway in high-temperature environments, leading to fires or explosions; the cycle life of batteries is short, and frequent battery replacement not only increases costs but also increases the risk of operation interruption; in addition, the charge and discharge efficiency of batteries is low, resulting in the equipment being unable to provide sufficient power support at critical moments, affecting the safety of miners.

[0004] Therefore, the present invention aims to provide a safety application solution of a new long-cycle battery in the deep well mining of Tashan Mine to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to solve the above problems and provide a safety application solution of a new long-cycle battery in the deep well mining of Tashan Mine. By optimizing the battery material and structure design, the cycle life and safety of the battery are significantly improved, which is particularly suitable for high-temperature and high-humidity environments in deep well coal mines such as Tashan Mine.

[0006] To achieve the above purpose, the technical solution of the present invention is as follows:

[0007] The present invention provides a safety application solution of a new long-cycle battery in the deep well mining of Tashan Mine, and the battery preparation solution includes the following steps:

[0008] S1. Calculate the liquid absorption rate V of the positive electrode sheet, c the liquid absorption rate V of the negative electrode sheet, a and the liquid absorption rate V of the separator through (σ1 - σ2 + σ3 - σ4 + σ0) / Vs*k = (σ1 - σ2) / Vc = (σ4 - σ3) / Va; s ;

[0009] S2. Measure the electrode sheet thicknesses of the above positive and negative electrode sheets in different states, and calculate the corresponding pore σ0;

[0010] S3. Calculate the matching degree of the positive electrode sheet, negative electrode sheet and separator by (σ1 - σ2) / Vc = (σ4 - σ3) / Va;

[0011] S4. Regulate the formulations of the positive electrode sheet and negative electrode sheet according to the matching degree of the positive electrode sheet, negative electrode sheet and separator.

[0012] Wherein, σ1: the pores of the positive electrode sheet in the 0% SOC state, σ2: the pores of the positive electrode sheet in the 100% SOC state, σ3: the pores of the negative electrode sheet in the 0% SOC state, σ4: the pores of the negative electrode sheet in the 100% SOC state.

[0013] Make the liquid absorption rates of the positive electrode sheet, negative electrode sheet and separator for the electrolyte and the pores of the electrode sheets reach the liquid absorption balance of the positive electrode sheet and negative electrode sheet. According to the pores σ of the positive electrode sheet and negative electrode sheet designed for the 0% SOC and 100% SOC states of the battery, make the liquid absorption amounts of the positive electrode sheet and negative electrode sheet for the electrolyte match during the 0% - 100% SOC state process. The liquid absorption rates of the positive electrode sheet and negative electrode sheet can be controlled by regulating the addition amounts of the conductive agent and wetting agent in the positive electrode sheet and negative electrode sheet, and the liquid absorption rate of the separator is regulated by regulating the material of the separator and its coating layer; the liquid absorption rates of the positive electrode sheet, negative electrode sheet and separator can be calculated by the liquid absorption speed of a constant amount of electrolyte, or can be calculated by the climbing height of the electrolyte in a constant time.

[0014] The pores of the positive electrode sheet and negative electrode sheet are obtained by measuring and calculating the thicknesses of the positive electrode sheet and negative electrode sheet in the 0% and 100% SOC states. The pore changes of the positive electrode sheet and negative electrode sheet can be obtained by regulating the selection of the active substances in the positive electrode sheet and negative electrode sheet.

[0015] The porosity σ = d per unit area - (the weight of the electrode sheet dressing per unit area / the true density of the electrode sheet dressing per unit area), where d is the thickness of the active substance.

[0016] A safety application solution for a new type of long-cycle battery in the deep mining of Tashan Mine, including a positive electrode sheet, a negative electrode sheet, a separator and an electrolyte. The formulations of the positive electrode sheet and negative electrode sheet are both active substances, conductive agents, wetting agents and binders. The active substances are lithium cobaltate, ternary, lithium iron phosphate, graphite, silicon-based negative electrode and / or lithium titanate. The long-cycle battery can be made into a soft-pack battery, a square battery and a cylindrical battery.

[0017] Compared with the prior art, the beneficial effects of this solution:

[0018] In the present invention, the liquid absorption rate of the positive electrode sheet and the negative electrode sheet is controlled by regulating the conductive agent and the wetting agent in the positive electrode sheet and the negative electrode sheet. At the same time, the pores of the positive electrode sheet and the negative electrode sheet are regulated by regulating the pores of the active substances in the positive electrode sheet and the negative electrode sheet in different states (0% and 100% SOC). Through the above two aspects of regulation, the matching of the electrolyte absorption in the positive electrode sheet and the negative electrode sheet during the charge and discharge process of the battery is achieved, thereby improving the problems caused by different degrees of electrolyte infiltration in the battery, significantly improving the charge and discharge efficiency, cycle life and safety of the battery, thereby achieving the improvement of the battery performance and promoting the development of battery technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic flow chart of the solution in the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution of the present invention will be further described in detail below in conjunction with the embodiments and drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0021] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other. The present invention will be described in detail below in conjunction with the embodiments.

[0022] Embodiment:

[0023] The solution provided in the embodiment of the present invention is as described in the above-mentioned invention content, and a safe application solution of a new type of long-cycle battery in the deep well mining of Tashan Mine is provided. The preparation solution includes the following steps:

[0024] S1. Calculate the liquid absorption rate V of the positive electrode sheet s *k = (σ1 - σ2) / V c = (σ4 - σ3) / V a , the liquid absorption rate V of the negative electrode sheet c and the liquid absorption rate V of the separator a ; s ;

[0025] S2. Measure the thickness of the positive electrode sheet and the negative electrode sheet in different states, and calculate the corresponding pore σ0;

[0026] S3. Through (σ1 - σ2) / V c = (σ4 - σ3) / V aCalculate the matching degree of the positive electrode sheet, negative electrode sheet and separator;

[0027] S4. Adjust the formulations of the positive electrode sheet and negative electrode sheet according to the matching degree of the positive electrode sheet, negative electrode sheet and separator.

[0028] Among them, σ1: the pores of the positive electrode sheet in the 0% SOC state, σ2: the pores of the positive electrode sheet in the 100% SOC state, σ3: the pores of the negative electrode sheet in the 0% SOC state, σ4: the pores of the negative electrode sheet in the 100% SOC state.

[0029] Make the liquid absorption rates of the positive electrode sheet, negative electrode sheet and separator for the electrolyte and the pores of the electrode sheets reach the liquid absorption balance of the positive electrode sheet and negative electrode sheet. According to the pores σ of the positive electrode sheet and negative electrode sheet designed for the 0% SOC and 100% SOC states of the battery, make the liquid absorption amounts of the positive electrode sheet and negative electrode sheet for the electrolyte match during the 0%-100% SOC state process. The liquid absorption rates of the positive electrode sheet and negative electrode sheet can be controlled by adjusting the addition amounts of the conductive agent and wetting agent in the positive electrode sheet and negative electrode sheet, and the liquid absorption rate of the separator is adjusted by controlling the material of the separator and its coating layer; the liquid absorption rates of the positive electrode sheet, negative electrode sheet and separator can be calculated by the liquid absorption speed of a constant amount of electrolyte, or can be calculated by the creeping height of the electrolyte in a constant time.

[0030] The pores of the positive electrode sheet and negative electrode sheet are obtained by measuring and calculating the thicknesses of the positive electrode sheet and negative electrode sheet in the 0% and 100% SOC states. The pore changes of the positive electrode sheet and negative electrode sheet can be obtained by adjusting the selection of the active substances in the positive electrode sheet and negative electrode sheet.

[0031] Porosity σ = unit area * d - (weight of the electrode sheet dressing per unit area / true density of the electrode sheet dressing per unit area), where d is the thickness of the active substance.

[0032] A safety application solution for a new type of long-cycle battery in the deep well mining of Tashan Mine, including a positive electrode sheet, a negative electrode sheet, a separator and an electrolyte. The formulations of the positive electrode sheet and negative electrode sheet are both active substances, conductive agents, wetting agents and binders. The active substances are lithium cobaltate, ternary, lithium iron phosphate, graphite, silicon-based negative electrode and / or lithium titanate. This long-cycle battery can be made into a soft-pack battery, a square battery and a cylindrical battery.

[0033] The above specific embodiments are only explanations of the present invention, and they are not limitations on the present invention. Those skilled in the art can make modifications to these embodiments without creative contributions according to needs after reading this specification, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A new type of long cycle battery for safe application in deep mining of Tashan Mine, characterized by: The battery preparation scheme comprises the following steps: S1, through (σ1-σ2+σ3-σ4+σ0) / V s *k=(σ1-σ2) / V c =(σ4-σ3) / V a Calculate the liquid absorption rate V of the positive electrode c , the liquid absorption rate of the negative electrode V a and the membrane absorption rate V s ; S2, measuring the thickness of the positive and negative electrodes in different states, and calculating the pore σ0 in the corresponding state; S3, through (σ1-σ2) / V c =(σ4-σ3) / V a Calculate the matching degree of positive electrode sheet, negative electrode sheet and separator; S4. Adjust the formula of the positive and negative electrode sheets according to the matching degree between the positive and negative electrode sheets and the separator.

2. A safe application scheme of a new type of long cycle battery in deep mining of Tashan Mine as claimed in claim 1, characterized in that: The σ1: the pores of the positive electrode sheet at 0% SOC state, σ2: the pores of the positive electrode sheet at 100% SOC state, σ3: the pores of the negative electrode sheet at 0% SOC state, and σ4: the pores of the negative electrode sheet at 100% SOC state.

3. A safe application scheme of a new type of long cycle battery in deep mining of Tashan Mine as claimed in claim 1, characterized in that: The long cycle battery prepared according to the preparation scheme as described in claim 1 comprises a positive electrode sheet, a negative electrode sheet, a separator and an electrolyte.

4. A long cycle battery for underground coal mines as claimed in claim 3, characterized in that: The formulas of the positive electrode sheet and the negative electrode sheet are both active material, conductive agent, wetting agent and binder.

5. A long cycle battery for underground coal mines as claimed in claim 4, characterized in that: The active material is lithium cobalt oxide, ternary, lithium iron phosphate, graphite, silicon-based negative electrode and / or lithium titanate.

6. A long cycle battery for underground coal mines as claimed in claim 3, characterized in that: The long cycle battery can be made into a soft pack battery, a square battery and a cylindrical battery.

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