Method and device for determining the center of gravity of an energy storage container

Abstract

The present application relates to the technical field of energy storage device design, transportation and safety detection, and discloses a method and device for determining the center of gravity of an energy storage container, which comprises the following steps: calculating the total weight of the internal devices of a target energy storage container according to the number and estimated weight of each type of device in the target energy storage container; dividing the target energy storage container into multiple partitions and calculating the total weight of the internal devices of each partition; calculating the center of gravity coordinates of each partition according to the center coordinates of each partition; and calculating the target center of gravity coordinates of the target energy storage container according to the net weight, factory center of gravity coordinates and total weight of the internal devices of the target energy storage container, and the total weight of the internal devices and center of gravity coordinates of each partition.

Description

Technical Field

[0001] This invention relates to the fields of energy storage equipment design, transportation and safety testing technology, and specifically to a method and apparatus for determining the center of gravity of an energy storage container. Background Technology

[0002] Energy storage containers, as carriers of integrated energy storage equipment, are widely used in new energy power generation, grid peak shaving, and other scenarios due to their advantages of flexible deployment and convenient expansion. However, their internal integration results in a relatively high degree of uncertainty regarding their center of gravity.

[0003] Precisely controlling the center of gravity position is a core prerequisite for ensuring operational safety throughout the entire process of transporting, hoisting, and installing energy storage containers. If the center of gravity deviates beyond the safe range, it can easily lead to safety hazards such as vehicle rollover, damage due to uneven stress on the spreading equipment, and imbalance of the foundation after installation. In existing technologies, the calculation of the center of gravity of energy storage containers mostly relies on high-precision weighing equipment such as weighbridges and axle load meters, combined with multi-point measurement methods for step-by-step weighing and coordinate calculation. This process is not only cumbersome and time-consuming, but also has high requirements for site conditions and equipment configuration, making it difficult to adapt to scenarios with high efficiency requirements, such as temporary scheduling at construction sites and emergency safety inspections.

[0004] Therefore, there is an urgent need for a method for estimating the center of gravity of energy storage containers that is simple to operate, efficient and fast, and free from complex and precise equipment, in order to meet the needs of actual field application scenarios. Summary of the Invention

[0005] The purpose of this invention is to provide a method and apparatus for determining the center of gravity of an energy storage container, so as to solve the problems of existing center of gravity calculation methods relying on high-precision weighing equipment, cumbersome operation procedures, and low calculation efficiency, and to achieve the goal of quickly estimating the position of the center of gravity of an energy storage container without complex equipment, while taking into account both the convenience of estimation and the need for safety prediction.

[0006] To achieve the above objectives, the first aspect of the present invention discloses a method for determining the center of gravity of an energy storage container, the method comprising: The total weight of the internal equipment of the target energy storage container is calculated based on the number of each type of equipment inside the target energy storage container and the estimated weight of each piece of equipment. The target energy storage container is divided into multiple partitions, and the total weight of the internal equipment corresponding to each partition is calculated. Calculate the centroid coordinates of each partition based on its center coordinates; and Based on the target energy storage container's net weight, factory center of gravity coordinates, and total weight of internal equipment, and each partition's total weight of internal equipment and center of gravity coordinates, the target center of gravity coordinates of the target energy storage container are calculated.

[0007] Preferably, calculating the target center of gravity coordinates corresponding to the target energy storage container includes: based on the target energy storage container's net weight K0, factory center of gravity coordinates (X0, Y0, Z0), total internal equipment weight W, and total internal equipment weight G corresponding to each partition. i and the centroid coordinates (X) i ,Y i Z i The target centroid coordinates (X and Y) of the target energy storage container are calculated using the following formula. c ,Y c Z c ): X C =(K0×X0+Σ(G i ×X i )) / (K0+W) Y C =(K0×Y0+Σ(G i ×Y i )) / (K0+W) Z C =(K0×Z0+Σ(G i ×Z i )) / (K0+W).

[0008] Preferably, the method further includes: Based on the external dimensions of the target energy storage container, determine whether the target center of gravity coordinates are located inside the target energy storage container; When the target center of gravity coordinates exceed the outline range of the target energy storage container, an alarm is issued indicating that the target center of gravity coordinates exceed the range of the energy storage container; and When the target center of gravity coordinates are within the outline of the target energy storage container, and the offset of the target center of gravity coordinates exceeds the corresponding preset safety threshold, a target center of gravity offset warning is issued.

[0009] Preferably, the division of the target energy storage container into multiple zones is achieved through functional zoning or uniform grid zoning.

[0010] Preferably, calculating the centroid coordinates of each partition based on the center coordinates of each partition includes: For each partition, perform the following operations: The main equipment is selected based on its weight percentage; and a weighted average is calculated using the center-of-gravity coordinates of the main equipment, with the weighted average result used as the center-of-gravity coordinates of that partition.

[0011] Preferably, the plurality of partitions include: a battery module partition, an electronic control equipment partition, and an auxiliary equipment partition.

[0012] A second aspect of the present invention discloses an apparatus for determining the center of gravity of an energy storage container, comprising: a memory configured to store instructions; and a processor configured to retrieve the instructions from the memory and, when executing the instructions, to implement the method for determining the center of gravity of the energy storage container.

[0013] A third aspect of the present invention discloses a machine-readable storage medium storing instructions for causing a machine to perform the method for determining the center of gravity of the energy storage container.

[0014] Compared with the prior art, the method for determining the center of gravity of an energy storage container provided in this embodiment of the invention has the following beneficial effects: First, it is easy to operate and has low equipment dependence. This invention can calculate the center of gravity based on the technical documents of the energy storage container and on-site basic observations, without relying on high-precision weighing equipment. It can quickly complete the estimation on the construction site and is suitable for scenarios such as temporary scheduling and emergency inspection. Second, the calculation is efficient and adaptable to actual needs. By simplifying the calculation logic through partitioned estimation and weighted average method, the calculation cycle of the center of gravity is greatly shortened without the need for precise point-by-point measurement. The estimation accuracy can meet the safety prediction requirements of scenarios such as transportation and hoisting, achieving a balance between calculation efficiency and practicality. Third, it has wide applicability and strong expandability. It can be adapted to energy storage containers of different specifications and equipment layouts, such as 20 feet and 40 feet. Fourth, the cost is controllable, lowering the application threshold. It can be implemented using existing technical data and basic observations, which greatly reduces the economic and time costs of center of gravity calculation and facilitates its promotion and application in small and medium-sized energy storage projects and temporary operation scenarios. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 A flowchart illustrating the method for determining the center of gravity of an energy storage container provided by the present invention is shown. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0018] Example 1 Figure 1 A flowchart illustrating the method for determining the center of gravity of an energy storage container provided by the present invention is shown, as follows: Figure 1 As shown, the present invention provides a method for determining the center of gravity of an energy storage container, which may include the following steps S100~S104: S100. Collect the target energy storage container's basic parameters and internal equipment layout parameters. The basic parameters include the container's external dimensions (length, width, height), net weight K0, and factory center of gravity coordinates (X0, Y0, Z0). The internal equipment layout parameters include the quantity of each type of equipment, the estimated weight of a single piece of equipment, and the center coordinates of the equipment installation area.

[0019] The net weight K0 of the target energy storage container and its center of gravity coordinates (X0, Y0, Z0) can be directly retrieved from the target energy storage container's manufacturing technical documents. The estimated weight of a single piece of equipment corresponding to the internal equipment can be an approximation of the weight marked on the equipment nameplate, or an estimated value can be selected by referring to the conventional weight range of similar equipment, so as to reduce the difficulty of obtaining parameters.

[0020] S101. Calculate the total weight W of the internal equipment corresponding to the target energy storage container based on the number of various types of equipment inside the target energy storage container and the estimated weight of a single piece of equipment. S102. Divide the target energy storage container into multiple partitions and calculate the total weight G of the internal equipment corresponding to each partition. i (where i is the partition number, i=1,2,...,n, and n is the number of partitions). Specifically, functional zoning (such as battery module zoning, electronic control equipment zoning, and auxiliary equipment zoning) or uniform grid zoning can be used to divide the interior of the target energy storage container into several rectangular areas to ensure that the equipment distribution in each zone is relatively concentrated, thus simplifying the weight statistics and center of gravity estimation process.

[0021] S103. Calculate the centroid coordinates of each partition based on the center coordinates of each partition. Furthermore, a three-dimensional coordinate system is established with the bottom left corner of the target energy storage container as the origin (X-axis extends along the length of the container, Y-axis extends along the width, and Z-axis extends along the height). Based on the center coordinates of the installation areas of each partition, the centroid coordinates (X-axis, Y-axis, and Z-axis) of each partition are determined. i ,Y iZ i The center coordinates of each partition installation area can be roughly determined based on the equipment layout drawings or on-site visual positioning.

[0022] In this embodiment of the invention, since there are a large number of devices in the partition and they are scattered, the main devices can be selected according to their weight percentage, such as devices whose weight percentage exceeds 80% of the total weight of the partition; and the weighted average of the center of gravity coordinates of the main devices is used as the center of gravity coordinates of the partition, thereby further simplifying the calculation while ensuring the reasonableness of the estimation.

[0023] S104. Based on the net weight, factory center of gravity coordinates and total weight of internal equipment of the target energy storage container, and the total weight of internal equipment and center of gravity coordinates of each partition, calculate the target center of gravity coordinates of the target energy storage container.

[0024] Furthermore, calculating the target centroid coordinates corresponding to the target energy storage container includes: Based on the target energy storage container's: its own net weight K0, its factory center of gravity coordinates (X0, Y0, Z0), and the total weight W of its internal equipment, and for each of the partitions: the total weight G of its internal equipment. i and the centroid coordinates (X) i ,Y i Z i The target centroid coordinates (X and Y) of the target energy storage container are calculated using the following formula. c ,Y c Z c ): X C =(K0×X0+Σ(G i ×X i )) / (K0+W) Y C =(K0×Y0+Σ(G i ×Y i )) / (K0+W) Z C =(K0×Z0+Σ(G i ×Z i )) / (K0+W).

[0025] In the above formula, Σ represents the summation of the product of the total weight of the internal devices in all partitions and their corresponding coordinates. The above formula does not require complex iterative calculations and can be adapted to fast estimation scenarios.

[0026] In this embodiment of the invention, the method further includes the following steps S201~S203: S201. Based on the external dimensions of the target energy storage container, determine whether the target center of gravity coordinates calculated in step S104 are located inside the target energy storage container. S202. When the target center of gravity coordinates exceed the outline range of the target energy storage container, an alarm is issued that the target center of gravity coordinates exceed the range of the energy storage container. S203. When the target center of gravity coordinates are within the outline of the target energy storage container, and the offset of the target center of gravity coordinates exceeds the corresponding preset safety threshold, a target center of gravity offset warning is issued.

[0027] This invention also provides an apparatus for determining the center of gravity of an energy storage container, comprising: a memory configured to store instructions; and a processor configured to retrieve the instructions from the memory and, when executing the instructions, to implement the method for determining the center of gravity of the energy storage container.

[0028] This invention also provides a machine-readable storage medium storing instructions for causing a machine to execute the method for determining the center of gravity of the energy storage container.

[0029] Example 2 Example 2 is based on Example 1. Example 2 uses a 20-foot standard energy storage container as the calculation object, with external dimensions of length L = 6.058m and width W. ’ =2.438m, height H=2.896m, container's net weight K0≈6t, and the coordinates of its center of gravity marked in the factory technical documents are: (X0=3.029m, Y0=1.219m, Z0=1.3m).

[0030] The center of gravity of the energy storage container is calculated using the method for determining the center of gravity of the energy storage container provided in Example 1. The specific steps include the following steps S301~S305: S301, Basic Parameter Acquisition The container integrates 6 battery clusters, each with 8 packs (estimated weight 0.7t per unit), 1 combiner cabinet (estimated weight 0.3t per unit), 1 water turbine (estimated weight 0.4t), and 2 auxiliary equipment (fan and air conditioner, estimated weight 0.2t per unit). According to the equipment layout drawings, the left side of the container is the battery compartment (6 clusters, each with 8 battery packs) and the right side is the electrical compartment (including the water turbine, the power distribution combiner cabinet, and the air conditioner).

[0031] S302, Zoned Weight Calculation The interior of the energy storage container is divided into two functional zones: The total weight of section 1 (battery cluster) is G1 = 33.6t; The total weight of zone 2 (electrical control equipment zone, including combiner cabinets and PCS) is G2 = 0.3 + 0.4 + 0.2 = 0.9t; The total weight of the internal equipment in partitions 1 and 2 is W = 33.6 + 0.9 = 34.5t.

[0032] S303, Zone Center Positioning Establish a three-dimensional coordinate system with the bottom left corner of the energy storage container as the origin, and determine the coordinates of the centroid of each zone: Center coordinates of partition 1 (X1=2.6m, Y1=1.2m, Z1=1.3m); (Total length of partition 1 L1=5.136m; center of gravity coordinates X1=5.136 / 2≈2.6; Y1 and Z1 are considered to be equal to Y0 and Z0 in the center of gravity coordinates of the energy storage container).

[0033] Center coordinates of partition 2 (X2=0.3m, Y2=1.2m, Z2=1.3m); (Total length of partition 2 L2=0.6m; same as above X2=0.3m; Y1 and Z1 are considered to be equal to Y0 and Z0 in the center of gravity coordinates of the energy storage container).

[0034] S304. Overall Center of Gravity Estimation: Substitute the weighted average formula to calculate the coordinates of the overall center of gravity: X C =(6×3.029+33.6×2.6+0.9×0.3) / (6 + 34.5) ≈2.61m； Y C =(6×1.219+33.6×1.2+0.9×1.3) / (6+34.5) ≈1.21m； Z C =(6×1.3+33.6×1.3+0.9×1.3) / (6+34.5) ≈1.3m； The final coordinates of the overall centroid are (X) C ,Y C Z C = (2.61m, 1.21m, 1.3m).

[0035] S305, Reasonableness Verification The above-mentioned center of gravity coordinates are located within the outline of the container, and the offsets in the X-axis, Y-axis, and Z-axis directions are all controlled within the preset safety threshold (in this embodiment, the preset threshold is 10% of the external dimensions). It is determined that the center of gravity position is reasonable and can meet the safety requirements for transportation and hoisting.

[0036] Compared with the prior art, the method for determining the center of gravity of an energy storage container provided in this embodiment of the invention has the following beneficial effects: First, it is easy to operate and has low equipment dependence. This invention can calculate the center of gravity based solely on the technical documents of the energy storage container and on-site basic observations, without relying on high-precision weighing equipment. It can quickly complete the estimation on the construction site and is suitable for scenarios such as temporary scheduling and emergency inspections. Second, the calculation is efficient and adaptable to actual needs. By simplifying the calculation logic through partitioned estimation and weighted average method, the calculation cycle of the center of gravity is greatly shortened without the need for precise point-by-point measurement. The estimation accuracy can meet the safety prediction requirements of scenarios such as transportation and hoisting, achieving a balance between calculation efficiency and practicality. Third, it has wide applicability and strong expandability. It can be adapted to energy storage containers of different specifications and equipment layouts, such as 20 feet and 40 feet. Fourth, the cost is controllable, lowering the application threshold. It can be implemented using existing technical data and basic observations, which greatly reduces the economic and time costs of center of gravity calculation and facilitates its promotion and application in small and medium-sized energy storage projects and temporary operation scenarios.

[0037] The optional embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above embodiments. Within the scope of the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all fall within the protection scope of the embodiments of the present invention.

[0038] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the embodiments of the present invention will not describe the various possible combinations separately.

[0039] Those skilled in the art will understand that all or part of the steps in the methods of the above embodiments can be implemented by a program instructing related hardware. This program is stored in a storage medium and includes several instructions to cause a microcontroller, chip, or processor to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes: a USB flash drive, a portable hard drive, and a read-only memory (ROM). Various media that can store program code, such as only memory, random access memory (RAM), magnetic disks or optical disks.

[0040] Furthermore, various different implementations of the present invention can be combined arbitrarily, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed in the present invention.

Claims

1. A method for determining the center of gravity of an energy storage container, characterized in that, The method includes: Based on the number of each type of equipment inside the target energy storage container and the estimated weight of each piece of equipment, calculate the total weight of the internal equipment corresponding to the target energy storage container. The target energy storage container is divided into multiple partitions, and the total weight of the internal equipment corresponding to each partition is calculated. Calculate the centroid coordinates of each partition based on its center coordinates; and The target center of gravity coordinates of the target energy storage container are calculated based on its net weight, factory center of gravity coordinates, and total weight of internal equipment, as well as the total weight of internal equipment and center of gravity coordinates of each partition.

2. The method according to claim 1, characterized in that, The calculation of the target centroid coordinates corresponding to the target energy storage container includes: Based on the target energy storage container's: its own net weight K0, its factory center of gravity coordinates (X0, Y0, Z0), and the total weight W of its internal equipment, and for each of the partitions: the total weight G of its internal equipment. i and the centroid coordinates (X) i ,Y i Z i The target centroid coordinates (X and Y) of the target energy storage container are calculated using the following formula. c ,Y c Z c ): X C =(K0×X0+Σ(G i ×X i )) / (K0+W) Y C =(K0×Y0+Σ(G i ×Y i )) / (K0+W) WITH C =(K0×Z0+Σ(G i ×Z i )) / (K0+W)。 3. The method according to claim 1, characterized in that, The method further includes: Based on the external dimensions of the target energy storage container, determine whether the target center of gravity coordinates are located inside the target energy storage container; When the target center of gravity coordinates exceed the outline range of the target energy storage container, an alarm is issued indicating that the target center of gravity coordinates exceed the range of the energy storage container; and When the target center of gravity coordinates are within the outline of the target energy storage container, and the offset of the target center of gravity coordinates exceeds the corresponding preset safety threshold, a target center of gravity offset warning is issued.

4. The method according to claim 1, characterized in that, The division of the target energy storage container into multiple zones is achieved through functional zoning or uniform grid zoning.

5. The method according to claim 1, characterized in that, The step of calculating the centroid coordinates of each partition based on the center coordinates of each partition includes: For each partition, perform the following operations: The main equipment is selected based on its weight percentage; and a weighted average is calculated using the center-of-gravity coordinates of the main equipment, with the weighted average result used as the center-of-gravity coordinates of that partition.

6. The method according to claim 1, characterized in that, The multiple partitions include: battery module partition, electronic control equipment partition, and auxiliary equipment partition.

7. A device for determining the center of gravity of an energy storage container, characterized in that, include: The memory is configured to store instructions; The processor is configured to retrieve the instructions from the memory and, when executing the instructions, to implement the method for determining the center of gravity of the energy storage container according to any one of claims 1 to 6.

8. A machine-readable storage medium, characterized in that, The machine-readable storage medium stores instructions for causing the machine to perform the method for determining the center of gravity of the energy storage container according to any one of claims 1 to 6.

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