Whole pack utilization method and system for retired power batteries

Abstract

The invention discloses a whole-pack utilization method and system for retired power batteries. The method comprises the following steps: step 1, acquiring echelon utilization rates of the retired power batteries; 2, counting the requirements of the whole package; 3, calculating the whole-pack scrap quantity of the retired power batteries according to the whole-pack demand and the echelon utilization rate of the retired power batteries; 4, if the whole-pack scrap quantity of the retired power batteries is larger than a first preset threshold value, updating the echelon utilization rate of the retired power batteries according to the ratio of the whole-pack scrap quantity of the retired power batteries to the total quantity of the retired power batteries and the echelon utilization rate of the retired power batteries; 5, judging whether the power battery before updating is the same as the power battery after updating; step 6, calculating a whole-pack scrap rate according to the whole-pack scrap quantity of the retired power batteries and the total quantity of the retired power batteries; step 7, if the whole pack rejection rate is greater than a second preset threshold value, updating the echelon utilization rate of the retired power battery, and returning to the step 3; and if the whole packet rejection rate is greater than a second preset threshold value, returning to the step 2.

Description

Technical Field

[0001] The present invention relates to the technical field of retired battery utilization, and in particular to a method and system for whole-package utilization of retired power batteries. Background Art

[0002] Among the retired power batteries, most of them are still worth recycling and reuse, and the current power battery recycling is mainly divided into two categories. One is the recycling of monomers. Monomer recycling is to disassemble the battery, separate the copper, aluminum, nickel, cobalt, lithium and other metals on the battery through high temperature and high pressure from monomer lithium iron phosphate or ternary materials, and then purify the separated metals through a series of complex operations to form the corresponding metals, and then through smelting and electroplating and other processes, it becomes a metal sheet with a purity of 99.9%, which is processed into various high-purity additives. The additives can be used in materials, fuel cell manufacturing and other industries to achieve full-chain recycling of materials. The other is the recycling and reuse of the whole package. That is, the battery is disassembled, and the damaged and poorly performing monomers are found through testing or experiments, and new monomers are replaced, or the monomers are reorganized to form a new whole package and put back into use.

[0003] At present, the recycling and reuse technology of retired power battery packs is immature, the whole pack recycling rate is low, and the recycling of power battery monomers still lacks technical support. At present, most of the power battery cascade utilization enterprises use the technology of monomer recycling and reuse to carry out the business of power battery cascade utilization. Monomer recycling causes great loss to power battery materials and high production costs, so there are relatively few enterprises that choose monomer recycling and reuse, and even fewer enterprises that adopt whole pack recycling for power batteries. At present, the whole pack recycling rate is based on the requirements of the capacity cascade utilization of retired power batteries. The power battery packs with the capacity that meets the requirements are selected from the power batteries. In the whole pack utilization, the capacity of a single power battery module is not taken into consideration, but the power battery module is directly used as a whole pack. However, there is inconsistency in the power battery itself. If the power battery is selected according to the theoretical capacity and current performance, the capacity utilization rate of the power batteries with better performance and capacity in the power batteries actually used will be reduced, while the capacity utilization rate of the power batteries with poorer performance and capacity will be increased. On the other hand, with the increase in the number of times the whole pack is reused, the capacity attenuation of the whole pack gradually increases. Ultimately, the capacity of the whole power battery pack cannot meet the needs of the whole pack utilization, resulting in an increase in the scrap rate of the whole power battery pack, affecting the recycling and reuse rate of the whole pack. Summary of the invention

[0004] The present invention provides a system, method and utilization rate for the whole-pack utilization of retired power batteries. It provides a new calculation method and system for retired power battery packs removed from a whole vehicle, thereby realizing the whole-pack recycling of retired power batteries, so that retired power batteries reported by the whole vehicle and retired power batteries recycled by resource recycling companies can be utilized in their entirety, and the recycled retired power batteries can have a higher utilization rate.

[0005] In a first aspect, the present invention provides a system for utilizing a whole package of retired power batteries, comprising:

[0006] Whole package demand statistics module, used to count whole package demand;

[0007] A retired power battery cascade utilization rate acquisition module is used to obtain the retired power battery cascade utilization rate;

[0008] A module for calculating the scrap quantity of a whole pack of retired power batteries, which is used to calculate the scrap quantity of a whole pack of retired power batteries according to the whole pack demand and the cascade utilization rate of retired power batteries;

[0009] A retired power battery ladder utilization rate update module, used for updating the retired power battery ladder utilization rate according to the ratio of the retired power battery whole pack scrapped amount to the total amount of retired power batteries and the retired power battery ladder utilization rate if the retired power battery whole pack scrapped amount is greater than a first preset threshold value;

[0010] A whole pack scrap rate calculation module, used to calculate the whole pack scrap rate according to the scrap quantity of the whole pack of retired power batteries and the total quantity of retired power batteries;

[0011] The retired power battery utilization rate acquisition module includes:

[0012] The first retired power battery cascade utilization rate submodule is used to obtain an initial value of the retired power battery cascade utilization rate;

[0013] The retired power battery quantity statistics module is used to count the total number of retired power batteries and the number of retired power battery packs;

[0014] The retired power battery capacity statistics module is used to count the total capacity, first discharge capacity and first charge capacity of retired power batteries;

[0015] A retired power battery attenuation acquisition module is used to obtain the attenuation of retired power batteries;

[0016] A retired power battery cascade utilization rate calculation module is used to calculate the retired power battery cascade utilization rate according to the total capacity, first discharge capacity, first charge capacity and retired power battery attenuation of the retired power battery;

[0017] The retired power battery ladder utilization rate judgment module is used to transmit the calculated retired power battery ladder utilization rate to the retired power battery ladder utilization rate update module if the retired power battery ladder utilization rate is greater than or equal to the retired power battery ladder utilization rate preset threshold value; if the calculated retired power battery ladder utilization rate is less than the retired power battery ladder utilization rate preset threshold value, the obtained initial value is transmitted as the retired power battery ladder utilization rate to the retired power battery ladder utilization rate update module.

[0018] Optionally, the system further comprises a module for recycling the whole package of retired power batteries, which is used for recycling the whole package of retired power batteries.

[0019] Optionally, the retired power battery whole pack recycling module includes:

[0020] The retired power battery recycling statistics submodule is used to recycle retired power batteries according to a preset method and count the total amount of retired power batteries recycled;

[0021] The retired power battery classification submodule is used to classify retired power batteries according to the total amount of retired power batteries recycled;

[0022] A retired power battery pack separation submodule, used to separate retired power battery packs;

[0023] A retired power battery grouping submodule, used for grouping retired power batteries;

[0024] A retired power battery pack recycling submodule is used to recycle retired power battery packs in groups;

[0025] The retired power battery pack detection submodule is used to detect the recycled retired power battery packs and obtain the detection results.

[0026] Optionally, the retired power battery pack separation submodule includes:

[0027] The retired power battery pack decomposition submodule is used to disassemble the ternary power battery pack to obtain a ternary power battery module if the retired power battery is a ternary power battery; if the retired power battery is a lithium iron phosphate power battery, the lithium iron phosphate power battery pack is disassembled to obtain a lithium iron phosphate power battery module.

[0028] Optionally, the retired power battery recycling statistics submodule includes:

[0029] The submodule for obtaining the recycling unit price of retired power batteries is used to obtain the recycling unit price of power batteries;

[0030] The retired power battery recycling quantity statistics submodule is used to calculate the user's recycling income based on the number of power batteries recycled by the user and the unit price of power battery recycling.

[0031] In a second aspect, the present invention provides a method for utilizing a whole package of retired power batteries, comprising:

[0032] Step 1, obtaining the utilization rate of retired power batteries;

[0033] Step 2: Count the whole package demand;

[0034] Step 3, calculating the scrap quantity of the whole pack of retired power batteries according to the whole pack demand and the cascade utilization rate of retired power batteries;

[0035] Step 4: if the scrapped amount of the whole package of retired power batteries is greater than the first preset threshold, updating the echelon utilization rate of the retired power batteries according to the ratio of the scrapped amount of the whole package of retired power batteries to the total amount of retired power batteries and the echelon utilization rate of the retired power batteries;

[0036] Step 5, determine whether the power battery before the update is the same as the power battery after the update; if they are the same, exit;

[0037] Step 6, calculating the whole pack scrap rate according to the whole pack scrap quantity of retired power batteries and the total amount of retired power batteries;

[0038] Step 7: If the whole pack scrap rate is greater than the second preset threshold, update the retired power battery utilization rate and return to step 3; if the whole pack scrap rate is less than the second preset threshold, return to step 2.

[0039] Optionally, step 1 includes:

[0040] Step 101, obtaining an initial value of a power battery utilization rate;

[0041] Step 102, counting the total amount of retired power batteries and the number of retired power battery packs;

[0042] Step 103, counting the total capacity, first discharge capacity and first charge capacity of the retired power battery;

[0043] Step 104, obtaining the attenuation of retired power batteries;

[0044] Step 105, calculating the echelon utilization rate of the retired power batteries according to the total capacity, the first discharge capacity, the first charge capacity and the attenuation of the retired power batteries;

[0045] Step 106: If the retired power battery echelon utilization rate is greater than or equal to the preset threshold value of the retired power battery echelon utilization rate, the retired power battery echelon utilization rate is set to the utilization rate calculated in step 105; if the retired power battery echelon utilization rate is less than the preset threshold value of the retired power battery echelon utilization rate, the retired power battery echelon utilization rate is set to the initial value obtained in step 101; wherein the retired power battery echelon utilization rate calculation model is:

[0046] γ t =(C f / C c )×(γ j -d j ×q j )

[0047] γ t Retirement battery utilization rate, C f is the total capacity of the first discharge of the power battery, C c is the total capacity of the power battery for the first charge, γ j is the retired power battery utilization rate of the power battery in year j, d j is the retired power battery attenuation of the power battery in year j, q j is the retirement percentage of the power battery in the jth year.

[0048] Optionally, the step 2 includes: counting the demand for a whole pack of retired power batteries, wherein the whole pack demand calculation formula is:

[0049] Q=(p1×N1 / N×δ1×N2 / N1)+(p2×M1 / M×δ2×M2 / M1)

[0050] Among them, Q is the demand for retired power batteries as a whole pack, p1 is the demand for ternary power batteries, p2 is the demand for lithium iron phosphate batteries, N is the total number of retired power batteries, M is the total number of retired power batteries minus the number of ternary power batteries, δ1 is the demand coefficient for retired ternary power batteries, δ2 is the demand coefficient for retired lithium iron phosphate batteries, N1 is the actual number of ternary power batteries, N2 is the number of ternary power batteries as a whole pack, M1 is the actual number of retired lithium iron phosphate batteries, and M2 is the number of lithium iron phosphate batteries as a whole pack.

[0051] Optionally, the step 3 includes:

[0052] Step 301, determining whether to recycle the retired power batteries in their entirety;

[0053] If the retired power batteries are not recycled as a whole package, the power battery whole package scrapping model is used to calculate the scrap volume of the retired power batteries as a whole package, where the power battery whole package scrapping model is:

[0054] β=n×(1-X×β1)

[0055] Where β is the scrapped amount of power batteries, n is the total number of retired power batteries, X is the demand ratio of retired power batteries, and β1 is the demand for power batteries.

[0056] Step 302: If the power battery is recycled in its entirety, the number of retired power batteries to be recycled is calculated based on the recycling income of the retired power batteries and the unit price of the power battery recycling. The calculation formula for the number of retired power batteries to be recycled is: N = β1 / (p1×X1+p2×X2)

[0057] Among them, N is the number of retired power batteries recycled, p1 is the unit price of ternary power batteries, p2 is the unit price of lithium iron phosphate batteries, β1 is the demand for whole packs of power batteries, X1 is the recycling ratio of ternary power batteries, and X2 is the recycling ratio of lithium iron phosphate batteries.

[0058] Optionally, step 5 includes:

[0059] Step 501: if the scrap quantity of the entire package of retired power batteries is less than or equal to a first preset threshold, the utilization rate of the retired power batteries remains unchanged;

[0060] Step 502, updating the echelon utilization rate of retired power batteries according to the ratio of the scrapped amount of the whole package of retired power batteries to the total amount of retired power batteries and the echelon utilization rate of retired power batteries, wherein the calculation formula for updating the echelon utilization rate of retired power batteries is:

[0061] γ t ′=γ t ×(1-α×N / β)

[0062] Among them, γ t is the cascade utilization rate of retired power batteries of annealed power batteries, α is the reduction coefficient of the cascade utilization rate of retired power batteries, β is the scrapped quantity of the whole pack of power batteries, and N is the total number of retired power batteries.

[0063] Optionally, step 6 includes:

[0064] Step 601: If the power battery is recycled as a whole package, the whole package scrap rate is calculated according to the number of retired power batteries recycled and the whole package scrap rate. The whole package scrap rate calculation formula is: whole package scrap rate = N / β×100%

[0065] Among them, β is the scrapped amount of the whole pack of power batteries, and N is the number of retired power batteries recycled.

[0066] In a third aspect, the present invention provides a whole pack utilization process of retired power batteries, using the whole pack utilization system of retired power batteries as described in the first aspect to calculate the whole pack utilization rate of retired power batteries, including:

[0067] Step 1, calculating the power battery utilization rate;

[0068] Step 2: Count the demand for power battery packs;

[0069] Step 3, if the power battery cascade utilization rate is less than the update threshold, the scrapping amount of the retired power battery pack is calculated; if the power battery cascade utilization rate is greater than or equal to the update threshold or the power battery pack fails to be recycled, return to step 1;

[0070] Step 4, determine whether the number of recycled retired power batteries meets the demand; if so, recycle and exit; if not, return to step 1;

[0071] Step 5, recycle the power battery and test the performance of the power battery, and determine whether the power battery meets the standards for reuse according to the performance of the power battery; if it meets the standards, then exit; if it does not meet the standards, then perform cascade utilization;

[0072] Step 6: Count the reuse rate of the power battery.

[0073] Compared with the prior art, the present invention has the following beneficial effects:

[0074] The utilization rate of the entire package of retired power batteries was calculated, and the retired power battery cascade utilization rate was updated based on the ratio of the scrap volume of the entire package of retired power batteries to the total volume of retired power batteries, thereby achieving the recycling of the entire package of retired power batteries and achieving a higher recycling rate of retired power batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 these drawings without paying creative work.

[0076] Figure 1 This is a flow chart of a method for utilizing a whole package of retired power batteries according to the present invention;

[0077] Figure 2 This is a block diagram of a system for utilizing a whole package of retired power batteries according to the present invention;

[0078] Figure 3 This is a process diagram of the whole package utilization of retired power batteries according to the present invention. DETAILED DESCRIPTION

[0079] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0080] Example 1

[0081] like Figure 1 As shown, an embodiment of the present invention provides a whole-package utilization system for retired power batteries, comprising:

[0082] Whole package demand statistics module, used to count whole package demand;

[0083] A retired power battery cascade utilization rate acquisition module is used to obtain the retired power battery cascade utilization rate;

[0084] A module for calculating the scrap quantity of a whole pack of retired power batteries, which is used to calculate the scrap quantity of a whole pack of retired power batteries according to the whole pack demand and the cascade utilization rate of retired power batteries;

[0085] A retired power battery ladder utilization rate update module, used for updating the retired power battery ladder utilization rate according to the ratio of the retired power battery whole pack scrapped amount to the total amount of retired power batteries and the retired power battery ladder utilization rate if the retired power battery whole pack scrapped amount is greater than a first preset threshold value;

[0086] A whole pack scrap rate calculation module, used to calculate the whole pack scrap rate according to the scrap quantity of the whole pack of retired power batteries and the total quantity of retired power batteries;

[0087] The retired power battery utilization rate acquisition module includes:

[0088] The first retired power battery cascade utilization rate submodule is used to obtain an initial value of the retired power battery cascade utilization rate;

[0089] The retired power battery quantity statistics module is used to count the total number of retired power batteries and the number of retired power battery packs;

[0090] The retired power battery capacity statistics module is used to count the total capacity, first discharge capacity and first charge capacity of retired power batteries;

[0091] A retired power battery attenuation acquisition module is used to obtain the attenuation of retired power batteries;

[0092] A retired power battery cascade utilization rate calculation module is used to calculate the retired power battery cascade utilization rate according to the total capacity of the retired power battery, the first discharge capacity, and the retired power battery attenuation;

[0093] The retired power battery ladder utilization rate judgment module is used to transmit the calculated retired power battery ladder utilization rate to the retired power battery ladder utilization rate update module if the retired power battery ladder utilization rate is greater than or equal to the retired power battery ladder utilization rate preset threshold value; if the calculated retired power battery ladder utilization rate is less than the retired power battery ladder utilization rate preset threshold value, the obtained initial value is transmitted as the retired power battery ladder utilization rate to the retired power battery ladder utilization rate update module.

[0094] In this embodiment, the system further includes a module for recycling the retired power batteries in a whole package, which is used to recycle the retired power batteries in a whole package.

[0095] In this embodiment, the retired power battery whole package recycling module includes:

[0096] The retired power battery recycling statistics submodule is used to recycle retired power batteries according to a preset method and count the total amount of retired power batteries recycled;

[0097] The retired power battery classification submodule is used to classify retired power batteries according to the total amount of retired power batteries recycled;

[0098] A retired power battery pack separation submodule, used to separate retired power battery packs;

[0099] A retired power battery grouping submodule, used for grouping retired power batteries;

[0100] A retired power battery pack recycling submodule is used to recycle retired power battery packs in groups;

[0101] The retired power battery pack detection submodule is used to detect the recycled retired power battery packs and obtain the detection results.

[0102] In this embodiment, the retired power battery pack separation submodule includes:

[0103] The retired power battery pack decomposition submodule is used to disassemble the ternary power battery pack to obtain a ternary power battery module if the retired power battery is a ternary power battery; if the retired power battery is a lithium iron phosphate power battery, the lithium iron phosphate power battery pack is disassembled to obtain a lithium iron phosphate power battery module.

[0104] In this embodiment, the retired power battery recycling statistics submodule includes:

[0105] The submodule for obtaining the recycling unit price of retired power batteries is used to obtain the recycling unit price of power batteries;

[0106] The retired power battery recycling quantity statistics submodule is used to calculate the user's recycling income based on the number of power batteries recycled by the user and the unit price of power battery recycling.

[0107] like Figure 2 The embodiment of the present invention also provides a method for utilizing a whole package of retired power batteries, comprising:

[0108] Step 1, obtaining the utilization rate of retired power batteries;

[0109] Step 2: Count the whole package demand;

[0110] Step 3, calculating the scrap quantity of the whole pack of retired power batteries according to the whole pack demand and the cascade utilization rate of retired power batteries;

[0111] Step 4: if the scrapped amount of the whole package of retired power batteries is greater than the first preset threshold, updating the echelon utilization rate of the retired power batteries according to the ratio of the scrapped amount of the whole package of retired power batteries to the total amount of retired power batteries and the echelon utilization rate of the retired power batteries;

[0112] Step 5, determine whether the power battery before the update is the same as the power battery after the update; if they are the same, exit;

[0113] Step 6, calculating the whole pack scrap rate according to the whole pack scrap quantity of retired power batteries and the total amount of retired power batteries;

[0114] Step 7: If the whole pack scrap rate is greater than the second preset threshold, the retired power battery cascade utilization rate is updated, and the process returns to step 3. This process means that the whole pack scrap volume of retired power batteries is too high relative to the total amount of retired power batteries, and the cascade utilization strategy needs to be re-evaluated and adjusted. The purpose of returning to step 3 is to update the cascade utilization rate of retired power batteries to reflect the current actual situation and determine whether it is necessary to further reduce the scrap volume of retired power batteries; if the whole pack scrap rate is less than the second preset threshold, the current whole pack scrapping of retired power batteries is not sufficient, and there are more retired power batteries that can be effectively cascaded, then return to step 2 to re-count the whole pack demand, so as to re-evaluate and optimize the entire cascade utilization process of retired power batteries.

[0115] Wherein, step 1 described in this embodiment includes:

[0116] Step 101, obtaining an initial value of a power battery utilization rate;

[0117] Step 102, counting the total amount of retired power batteries and the number of retired power battery packs;

[0118] Step 103, counting the total capacity, first discharge capacity and first charge capacity of the retired power battery;

[0119] Step 104, obtaining the attenuation of retired power batteries;

[0120] Step 105, calculating the echelon utilization rate of the retired power batteries according to the total capacity, the first discharge capacity, the first charge capacity and the attenuation of the retired power batteries;

[0121] Step 106: if the retired power battery echelon utilization rate is greater than or equal to the preset threshold value of the retired power battery echelon utilization rate, the retired power battery echelon utilization rate is set to the utilization rate calculated in step 105; if the retired power battery echelon utilization rate is less than the preset threshold value of the retired power battery echelon utilization rate, the retired power battery echelon utilization rate is set to the initial value obtained in step 101;

[0122] Among them, the calculation model of the cascade utilization rate of retired power batteries is: γ t =(C f / C c )×(γ j -d j ×q j ), γ t Retirement battery utilization rate, C f is the total capacity of the first discharge of the power battery, C c is the total capacity of the power battery for the first charge, γ j is the retired power battery utilization rate of the power battery in year j, d j is the retired power battery attenuation of the power battery in year j, q j is the retirement percentage of the power battery in the jth year.

[0123] In this embodiment, the step 2 includes: counting the demand for the whole pack of retired power batteries, wherein the whole pack demand calculation formula is: The whole pack demand calculation formula is: Q = (p1×N1 / N×δ1×N2 / N1)+(p2×M1 / M×δ2×M2 / M1)

[0124] Among them, Q is the demand for retired power batteries as a whole pack, p1 is the demand for ternary power batteries, p2 is the demand for lithium iron phosphate batteries, N is the total number of retired power batteries, M is the total number of retired power batteries minus the number of ternary power batteries, δ1 is the demand coefficient for retired ternary power batteries, δ2 is the demand coefficient for retired lithium iron phosphate batteries, N1 is the actual number of ternary power batteries, N2 is the number of ternary power batteries as a whole pack, M1 is the actual number of retired lithium iron phosphate batteries, and M2 is the number of lithium iron phosphate batteries as a whole pack.

[0125] In this embodiment, step 3 includes:

[0126] Step 301, determining whether to recycle the retired power batteries in their entirety; if the retired power batteries are not recycled in their entirety, a power battery entirety scrapping model is used to calculate the entirety scrapping amount of the retired power batteries, wherein the power battery entirety scrapping model is:

[0127] β=n×(1-X×β1)

[0128] Where β is the scrapped amount of power batteries, n is the total number of retired power batteries, X is the demand ratio of retired power batteries, and β1 is the demand for power batteries.

[0129] Step 302: If the power battery is recycled in its entirety, the number of retired power batteries to be recycled is calculated based on the recycling income of the retired power batteries and the unit price of the power battery recycling. The calculation formula for the number of retired power batteries to be recycled is: N = β1 / (p1×X1+p2×X2)

[0130] Among them, N is the number of retired power batteries recycled, p1 is the unit price of ternary power batteries, p2 is the unit price of lithium iron phosphate batteries, β1 is the demand for whole packs of power batteries, X1 is the recycling ratio of ternary power batteries, and X2 is the recycling ratio of lithium iron phosphate batteries.

[0131] In this embodiment, step 5 includes:

[0132] Step 501: if the scrap quantity of the entire package of retired power batteries is less than or equal to a first preset threshold, the utilization rate of the retired power batteries remains unchanged;

[0133] Step 502, updating the echelon utilization rate of retired power batteries according to the ratio of the scrapped amount of the whole package of retired power batteries to the total amount of retired power batteries and the echelon utilization rate of retired power batteries, wherein the calculation formula for updating the echelon utilization rate of retired power batteries is:

[0134] γ t ′=γ t ×(1-α×N / β)

[0135] Among them, γ t is the cascade utilization rate of retired power batteries of annealed power batteries, α is the reduction coefficient of the cascade utilization rate of retired power batteries, β is the scrapped quantity of the whole pack of power batteries, and N is the total number of retired power batteries.

[0136] In this embodiment, step 6 includes:

[0137] Step 601: If the power battery is recycled as a whole package, the whole package scrap rate is calculated according to the number of retired power batteries recycled and the whole package scrap rate. The whole package scrap rate calculation formula is: whole package scrap rate = N / β×100%

[0138] Among them, β is the scrapped amount of the whole pack of power batteries, and N is the number of retired power batteries recycled.

[0139] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A whole pack utilization system for retired power batteries, characterized in that: include: Whole package demand statistics module, used to count whole package demand; A retired power battery cascade utilization rate acquisition module is used to obtain the retired power battery cascade utilization rate; A module for calculating the scrap quantity of a whole pack of retired power batteries, which is used to calculate the scrap quantity of a whole pack of retired power batteries according to the whole pack demand and the cascade utilization rate of retired power batteries; A retired power battery ladder utilization rate update module, used for updating the retired power battery ladder utilization rate according to the ratio of the retired power battery whole pack scrapped amount to the total amount of retired power batteries and the retired power battery ladder utilization rate if the retired power battery whole pack scrapped amount is greater than a first preset threshold value; A whole pack scrap rate calculation module, used to calculate the whole pack scrap rate according to the scrap quantity of the whole pack of retired power batteries and the total quantity of retired power batteries; The retired power battery whole pack recycling module is used to recycle retired power batteries in whole packs.

2. The whole package utilization system of retired power batteries according to claim 1 is characterized in that: The retired power battery utilization rate acquisition module includes: The first retired power battery cascade utilization rate submodule is used to obtain an initial value of the retired power battery cascade utilization rate; The retired power battery quantity statistics module is used to count the total number of retired power batteries and the number of retired power battery packs; The retired power battery capacity statistics module is used to count the total capacity, first discharge capacity and first charge capacity of retired power batteries; A retired power battery attenuation acquisition module is used to obtain the attenuation of retired power batteries; A retired power battery cascade utilization rate calculation module is used to calculate the retired power battery cascade utilization rate according to the total capacity, first discharge capacity, first charge capacity and retired power battery attenuation of the retired power battery; The retired power battery ladder utilization rate judgment module is used to transmit the calculated retired power battery ladder utilization rate to the retired power battery ladder utilization rate update module if the retired power battery ladder utilization rate is greater than or equal to the retired power battery ladder utilization rate preset threshold value; if the calculated retired power battery ladder utilization rate is less than the retired power battery ladder utilization rate preset threshold value, the obtained initial value is transmitted as the retired power battery ladder utilization rate to the retired power battery ladder utilization rate update module.

3. The whole package utilization system of retired power batteries according to claim 1 is characterized in that: The retired power battery whole pack recycling module includes: a retired power battery recycling statistics submodule, which is used to recycle retired power batteries in a preset manner and count the total amount of retired power batteries recycled; a retired power battery classification submodule, which is used to classify retired power batteries according to the total amount of retired power batteries recycled; a retired power battery pack separation submodule, which is used to separate retired power battery packs; a retired power battery grouping submodule, which is used to group retired power batteries; a retired power battery group recycling submodule, which is used to recycle grouped retired power battery groups; and a retired power battery group detection submodule, which is used to detect the recycled retired power battery groups and obtain the detection results.

4. The whole package utilization system of retired power batteries according to claim 3 is characterized in that: The retired power battery pack separation submodule includes: a retired power battery pack decomposition submodule, which is used to disassemble the ternary power battery pack to obtain a ternary power battery module if the retired power battery is a ternary power battery; if the retired power battery is a lithium iron phosphate power battery, disassemble the lithium iron phosphate power battery pack to obtain a lithium iron phosphate power battery module.

5. The whole package utilization system of retired power batteries according to claim 4 is characterized in that: The retired power battery recycling statistics submodule includes: a retired power battery recycling unit price acquisition submodule, which is used to obtain the power battery recycling unit price; and a retired power battery recycling quantity statistics submodule, which is used to calculate the user's recycling income according to the number of power batteries recycled by the user and the power battery recycling unit price.

6. A method for utilizing the entire package of retired power batteries, characterized in that: include: Step 1, obtaining the utilization rate of retired power batteries; Step 2: Count the whole package demand; Step 3, calculating the scrap quantity of the whole pack of retired power batteries according to the whole pack demand and the cascade utilization rate of retired power batteries; Step 4: if the scrapped amount of the whole package of retired power batteries is greater than the first preset threshold, updating the echelon utilization rate of the retired power batteries according to the ratio of the scrapped amount of the whole package of retired power batteries to the total amount of retired power batteries and the echelon utilization rate of the retired power batteries; Step 5, determine whether the power battery before the update is the same as the power battery after the update; if they are the same, exit; Step 6: Calculate the scrap rate of the whole package according to the scrap quantity of the whole package of retired power batteries and the total amount of retired power batteries. If the power batteries are recycled by whole package, calculate the scrap rate of the whole package according to the number of recycled retired power batteries and the scrap quantity of the whole package. The calculation formula of the scrap rate of the whole package is: scrap rate of the whole package = N / β×100% Among them, β is the scrapped amount of the whole pack of power batteries, and N is the number of retired power batteries recycled; Step 7: If the whole pack scrap rate is greater than the second preset threshold, update the retired power battery utilization rate and return to step 3; if the whole pack scrap rate is less than the second preset threshold, return to step 2.

7. The method for utilizing the entire package of retired power batteries according to claim 6, characterized in that: The step 1 comprises: Step 101, obtaining an initial value of a power battery utilization rate; Step 102, counting the total amount of retired power batteries and the number of retired power battery packs; Step 103, counting the total capacity, first discharge capacity and first charge capacity of the retired power battery; Step 104, obtaining the attenuation of retired power batteries; Step 105, calculating the echelon utilization rate of the retired power batteries according to the total capacity, the first discharge capacity, the first charge capacity and the attenuation of the retired power batteries; Step 106: If the retired power battery echelon utilization rate is greater than or equal to the preset threshold value of the retired power battery echelon utilization rate, the retired power battery echelon utilization rate is set to the utilization rate calculated in step 105; if the retired power battery echelon utilization rate is less than the preset threshold value of the retired power battery echelon utilization rate, the retired power battery echelon utilization rate is set to the initial value obtained in step 101; wherein the retired power battery echelon utilization rate calculation model is: c t =(C f / C c )×(γ j -d j ×q j ) γ t Retirement battery utilization rate, C f is the total capacity of the first discharge of the power battery, C c is the total capacity of the power battery for the first charge, γ j is the retired power battery utilization rate of the power battery in year j, d j is the retired power battery attenuation of the power battery in year j, q j is the retirement percentage of the power battery in the jth year.

8. The method for utilizing the entire package of retired power batteries according to claim 6, characterized in that: The step 2 comprises: counting the demand for a whole pack of retired power batteries, wherein the whole pack demand is calculated as follows: Q=(p1×N1 / N×δ1×N2 / N1)+(p2×M1 / M×δ2×M2 / M1), wherein Q is the demand for a whole pack of retired power batteries, p1 is the demand for ternary power batteries, p2 is the demand for lithium iron phosphate batteries, N is the total number of retired power batteries, M is the total number of retired power batteries minus the number of ternary power batteries, δ1 is the demand coefficient for retired ternary power batteries, δ2 is the demand coefficient for retired lithium iron phosphate batteries, N1 is the actual number of ternary power batteries, N2 is the number of whole packs of ternary power batteries, M1 is the actual number of retired lithium iron phosphate batteries, and M2 is the number of whole packs of lithium iron phosphate batteries.

9. The method for utilizing the entire package of retired power batteries according to claim 6, characterized in that: The step 3 comprises: Step 301, determining whether to recycle the retired power batteries in their entirety; if the retired power batteries are not recycled in their entirety, a power battery entirety scrapping model is used to calculate the entirety scrapping amount of the retired power batteries, wherein the power battery entirety scrapping model is: β=n×(1-X×β1) Where β is the scrapped amount of power batteries, n is the total number of retired power batteries, X is the demand ratio of retired power batteries, and β1 is the demand for power batteries. Step 302: If the power battery is recycled in its entirety, the number of retired power batteries to be recycled is calculated based on the recycling income of the retired power batteries and the unit price of the power battery recycling. The calculation formula for the number of retired power batteries to be recycled is: N = β1 / (p1×X1+p2×X2) Among them, N is the number of retired power batteries recycled, p1 is the unit price of ternary power batteries, p2 is the unit price of lithium iron phosphate batteries, β1 is the demand for whole packs of power batteries, X1 is the recycling ratio of ternary power batteries, and X2 is the recycling ratio of lithium iron phosphate batteries.

10. The method for utilizing the entire package of retired power batteries according to claim 6, characterized in that: The step 5 comprises: step 501, if the scrapped amount of the whole package of retired power batteries is less than or equal to the first preset threshold, the echelon utilization rate of the retired power batteries remains unchanged; step 502, updating the echelon utilization rate of the retired power batteries according to the ratio of the scrapped amount of the whole package of retired power batteries to the total amount of retired power batteries and the echelon utilization rate of the retired power batteries, wherein the calculation formula for updating the echelon utilization rate of the retired power batteries is: c t ′=γ t ×(1-α×N / β) Among them, γ t is the cascade utilization rate of retired power batteries of annealed power batteries, α is the reduction coefficient of the cascade utilization rate of retired power batteries, β is the scrapped quantity of the whole pack of power batteries, and N is the total number of retired power batteries.

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