9results about How to "Capacity balance" patented technology

The invention relates to the technical field of capacity balancing of a dynamic reconfigurable battery energy storage system, in particular to a dynamic reconfigurable battery network capacity balancing method based on deep reinforcement learning. The method comprises the following steps: acquiring the charge state of at least one battery monomer and / or at least one battery module of the dynamic reconfigurable battery network in the charging and discharging process; inputting the charge state into a pre-trained deep reinforcement learning model to obtain a control instruction of the dynamic reconfigurable battery network; and in response to the control instruction, reconstructing the dynamic reconfigurable battery network, so that the capacity balancing capability of the reconstructed dynamic reconfigurable battery network meets a preset capacity balancing condition. Therefore, the problems that in the related technology, the dynamic reconfigurable battery network is a highly complex nonlinear time-varying dynamic system, the complexity of the dynamic reconfigurable battery network is greatly increased along with the increase of the number of the single batteries, and consequently the dynamic reconfigurable battery network cannot be accurately controlled, and global optimization is difficult to achieve are solved.

The invention discloses an intelligent charging control system and method for a power battery system and a vehicle. The intelligent charging control system of the power battery system is used for charging control of a battery system with at least two branches, and the branches are arranged in parallel. Each branch circuit comprises a battery module formed by connecting N battery boxes in series, a charging branch circuit and a heating branch circuit, the positive electrode of each charging branch circuit is connected with a branch circuit switch, the positive electrode of each heating branch circuit is connected with a branch circuit heating switch, and all the heating branch circuits can be controlled by any branch circuit heating switch; the branch switch and the branch heating switch are connected in parallel and then are connected to a charging and discharging positive port of the charging system through the charging and discharging positive switch; the negative electrode of each heating branch is connected to a charging and discharging negative electrode port of the charging system through a charging and discharging negative electrode switch, and the negative electrode of each charging branch is connected with the charging and discharging negative electrode switch through a current sensor. According to the invention, on-off of the switches between the branches can be controlled, and connection and disconnection of different branches are realized.

A dual-channel pre-welding machine for square aluminum-cased batteries includes a machine base and, in sequence according to the process flow, a transfer and turning device, a transit and handling device, a single OK battery storage device, an NG battery storage device, two pressing and transferring devices, two pressing devices, two pre-welding transfer devices, a step detection device, a pre-welding device, two resistance measurement transferring devices, two resistance measurement devices, a material unloading and handling device, an NG battery storage pull belt, and a single OK pre-welding battery storage device. It is used for pressing and fitting batteries, measuring the step height of pressed batteries and determining their passability, pre-welding pressed batteries, measuring the resistance value of pre-welded batteries and determining their passability. During the material handling and operation of the batteries, the battery carrier grippers, battery claw grippers, pressing fingers, and transfer clamping plates and blocks provide protection. This dual-channel pre-welding machine for square aluminum-cased batteries is equipped with several dual-set devices, balancing the overall production capacity and meeting requirements.

The invention relates to the field of battery management, in particular to a battery module double-layer equalization circuit which comprises an inter-group equalization circuit and a plurality of single equalization circuits. PWM control is performed on the switching tubes of the inter-group equalization circuit and the single equalization circuit by using the fuzzy control rule, so that inter-group capacity equalization of a high-potential area and a low-potential area of the battery module and single capacity equalization of a high-SOC battery and a low-SOC battery are realized, and the capacity consistency of each single battery in the battery module is improved. The method is mainly applied to battery modules in the fields of power batteries and energy storage batteries, and through a double-layer equalization circuit and a fuzzy control rule, the equalization time is effectively shortened, and the capacity consistency of the single batteries is improved.

The invention relates to a module-cell multi-level cooperative control battery management system construction method, and belongs to the technical field of electric vehicle battery management, and the method comprises the following steps: S1, designing a variable topological structure of a series-parallel circuit in a battery module, the method specifically comprises the following steps: S2, designing a power electronic structure for hierarchical self-adaptive control of a single battery cell in a battery module; s3, based on the multi-level battery management system, establishing an online parameter identification method of a battery cell level, and meanwhile, realizing a dynamic equalization process of a module level under any environmental condition; and S4, constructing a multi-level battery management system module to obtain a complete module-cell multi-level cooperative control battery management system. According to the method, high-precision estimation of battery parameters and capacity equalization in the module can be realized in parallel, and the precision of the capacity equalization process can be improved by the accurate parameter estimation result while the parameter estimation result is optimized by designing a high-information-degree signal.

The invention provides a single cell capacity difference equalization method and device based on a battery pack, relates to the technical field of battery packs, and solves the technical problem that the capacity of single cells is difficult to equalize under irregular charging and discharging of the battery pack in the prior art. The method specifically comprises the following steps: acquiring a first curve and a second curve; the first curve is a charging voltage curve of the first monomer; the second curve is a charging voltage curve of the second monomer; calculating the capacity difference between the first monomer and the second monomer based on the first curve and the second curve; and balancing the energy of the first monomer and the energy of the second monomer based on the capacity difference. The method is used for balancing the energy difference of the battery pack monomers.

The invention discloses a battery pack balancing system and method, and the system comprises a battery pack module which comprises a main battery pack and an auxiliary battery pack, and the main battery pack and the auxiliary battery pack are connected in series; the charging module is electrically connected with the battery pack module, and the charging module is used for charging the main battery pack and the auxiliary battery pack; and the voltage conversion module is electrically connected with the charging module and the main battery pack, and the voltage conversion module is used for charging the main battery pack. According to the invention, the voltage conversion module is connected with the charging module and the main battery pack, the main battery pack is charged, the equalization of the main battery pack and the auxiliary battery pack is realized, and the equalization of the series battery system can be conveniently and quickly realized under the condition that the actual use is not influenced.

The utility model discloses a universal base plate mechanism for a die, which comprises a die body, the die body comprises an upper die and a lower die, a base plate is arranged between the upper die and the lower die, a plurality of equidistant water-oil quick-plug female heads are embedded in the upper surface of the base plate, a plurality of equidistant water-oil quick-plug male heads are embedded in the lower surface of the base plate, and the water-oil quick-plug female heads are connected with the base plate. The water-oil quick plug female head and the water-oil quick plug male head are connected through a water-oil way hose, and four automatic locking positions are arranged at the front end and the rear end of the base plate respectively. After the device is used, a die for a production line project can be flexibly switched between two production lines, the productivity is balanced, the production adaptability of the die is improved, and the risk of abnormal production halt caused by machine tool problems is reduced.

The present application relates to the technical field of waterborne polyurethane materials, and particularly relates to a low VOC waterborne PU foam pad and a preparation method thereof. The foam pad is formed by foaming and curing of a waterborne polyurethane dispersion, and two types of aldehyde-trapping sites are simultaneously introduced into the same porous framework, i.e. an amidoxime group formed by post-conversion of a nitrile group precursor by hydroxylamine, and an aminooxy group obtained by coupling and deprotection of T-BOC-aminooxy-diglycol-amino through a carboxyl anchoring site under an EDC and NHS activation system; and a water-dispersible blocked polyisocyanate crosslinking agent is used to form a crosslinking network by pyrolytic deblocking, so as to achieve rapid capture and durable retention of aldehydes such as formaldehyde and acetaldehyde under water washing and humid heat conditions, and simultaneously help to reduce VOC emission of the material.