Pressure balance control system and method for liquid output port of normal divergence pipe network

Abstract

The invention provides a pressure balance control system and method for a liquid output port of a normal divergence pipe network, and the method comprises the steps: obtaining a large-scale storage battery monomer water injection parameter of a lead-acid storage battery pack, and setting an electrolyte anti-overflow limiting index of the lead-acid storage battery pack, acquiring water injection pipeline diameters and water injection main loop water pressures of the water injection pipe network main loop and the water injection pipe network branch loops; an automatic water injection normal divergence pipe network framework of the lead-acid storage battery pack is combined and constructed, and full-automatic synchronous water injection of a large number of storage batteries is performed The storage battery electrolyte level in the water injection process of the storage battery is detected, and storage battery electrolyte level detection data are obtained; diverging pipe network tail end water injection pipe flow in the storage battery water injection process is detected, and pipe network tail end water injection pipe flow detection data is obtained; the water outlet pressure of the water injection ports at the head end and the tail end of the diverging pipe network is controlled to be balanced, so that the water injection processes of the storage batteries are synchronous and balanced; and the water injection pipeline is cut off when the electrolyte anti-overflow limit index is reached.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent monitoring of flow precision control and liquid level detection, and more specifically, to a pressure balance control system and method for a liquid output port of a normal divergent pipe network. Background Art

[0002] At present, direct water filling is adopted for battery packs, and no adaptive current limiter is added, which leads to uneven water filling and even electrolyte overflow accidents of batteries. The original lead-acid battery packs usually adopt mechanical water filling or manual water filling. The failure rate of mechanical water filling is high and electrolyte overflow accidents are prone to occur. Manual water filling is inefficient, labor-intensive, and the battery liquid level is difficult to control. Therefore, safe and reliable automatic water filling for lead-acid battery packs is an urgent problem to be solved. However, lead-acid battery packs in some special occasions have particularly strict requirements on battery liquid level height, overflow prevention and other indicators. In particular, electrolyte is absolutely not allowed to overflow when the battery is filled with water. Usually A lead-acid battery pack is composed of a number of batteries (the number of batteries in the battery pack is combined according to actual usage requirements); however, the pipe network for fully automatic water injection is divergent. If fully automatic water injection is performed according to the divergent pipe network, the water outlet pressures of the water injection ports of the head battery and the tail battery will be unbalanced, which will cause an uneven rise in the battery electrolyte level. Therefore, the liquid level sensor and the shut-off link of the fully automatic water injection system must be kept intact, otherwise the battery electrolyte will overflow, and other problems remain to be solved; therefore, it is necessary to propose a pressure balancing control system and method for the liquid output port of a normal divergent pipe network to at least partially solve the problems existing in the prior art. Summary of the invention

[0003] A series of simplified concepts are introduced in the content of the invention, which will be further described in detail in the specific implementation method section; the content of the invention of the present invention does not mean to attempt to limit the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0004] In order to at least partially solve the above problems, the present invention provides a pressure balance control system for a liquid output port of a normal diverging pipe network, comprising: Diverge the pipe network battery group structure subsystem, obtain the large-scale battery monomer water injection parameters of the lead-acid battery group, set the electrolyte overflow prevention limit index of the lead-acid battery group, and obtain the water injection pipe diameter of the main loop and branch loop of the water injection pipe network and the water pressure of the main water injection loop; The automatic water injection normal divergence pipe network subsystem constructs the automatic water injection normal divergence pipe network architecture for lead-acid battery groups based on the water injection parameters of the battery cells, combined with the diameter of the water injection pipe and the water pressure of the main water injection circuit, to automatically and synchronously inject water into a large number of batteries; The electrolyte level and water injection flow detection subsystem detects the battery electrolyte level during the battery water injection process and obtains the battery electrolyte level detection data; detects the flow of the water injection pipe at the end of the divergent pipe network during the battery water injection process and obtains the flow detection data of the water injection pipe at the end of the pipe network; The flow-limiting shut-off control balancing subsystem controls and maintains the water outlet pressure balance between the water injection ports at the head and end of the divergent pipe network, so that the water injection process of multiple batteries is synchronized and balanced; and shuts off the water injection pipeline when the electrolyte overflow prevention limit index is reached; solves the problem of electrolyte overflow or electrolyte shortage during the synchronous water injection process of a large number of batteries in the battery pack.

[0005] Preferably, the divergent pipe network battery group structure subsystem includes: The water injection parameter overflow prevention index subsystem obtains the large-scale battery monomer water injection parameters of the lead-acid battery group; sets the electrolyte overflow prevention limit index of the lead-acid battery group; The pipeline diameter loop water pressure subsystem obtains the water injection pipeline diameter of the main loop and branch loop of the water injection network and the water pressure of the main loop of the water injection network; The electrolyte overflow prevention limit indicators include: the electrolyte level reaching standard height indicator and the maximum overflow prevention liquid level indicator.

[0006] Preferably, the automatic water injection normal divergence pipe network subsystem includes: The water injection supply battery quantity analysis subsystem analyzes the number of batteries supplied by the water injection network branch circuit according to the water injection parameters of the battery cells, combined with the water injection pipe diameters of the main circuit and branch circuit of the water injection network and the water pressure of the main circuit; The automatic water injection normal divergence pipe network architecture subsystem combines and constructs the automatic water injection normal divergence pipe network architecture for lead-acid battery groups according to the number of batteries supplied by water injection; The divergent pipe network synchronous water injection subsystem, through the automatic water injection normal divergent pipe network architecture, according to the lead-acid battery group architecture and the number of batteries, performs fully automatic battery synchronous water injection for the lead-acid battery group composed of a large number of single batteries according to the actual power combination.

[0007] Preferably, the electrolyte level water injection flow detection subsystem includes: The electrolyte level detection subsystem detects the battery electrolyte level during the battery water filling process through a battery level sensor according to the electrolyte overflow prevention limit index, and obtains the battery electrolyte level detection data; the battery level sensor is arranged in the battery electrolyte; The divergent pipe network flow metering subsystem detects the flow of the water injection pipe at the end of the divergent pipe network during the battery water injection process through the divergent pipe network outlet flow meter, and obtains the water injection pipe flow detection data at the end of the pipe network; the divergent pipe network outlet flow meter is set at the water outlet of the divergent pipe network outlet.

[0008] Preferably, the flow-limiting flow-off control balancing subsystem comprises: The invisible current limiting control subsystem controls the invisible current limiter according to the battery electrolyte level detection data and the water injection pipe flow detection data at the end of the pipe network, so as to keep the water outlet pressure of the water injection port at the head end and the end end of the divergent pipe network balanced, so that the water injection process of multiple batteries is synchronized and balanced; The water injection flow shut-off synchronization subsystem controls the water injection flow shut-off unit of the automatic water injection normal divergence pipe network architecture through the battery water injection monitoring center. The water injection process of multiple batteries is synchronized and balanced, and the water injection pipeline is shut off when the electrolyte overflow prevention limit index is reached, so as to solve the problem of electrolyte overflow or electrolyte shortage during the synchronous water injection process of a large number of batteries in the battery group.

[0009] The present invention provides a pressure balance control method for a liquid output port of a normal divergent pipe network, comprising: S01, obtaining large-scale battery cell water injection parameters of the lead-acid battery group, setting the electrolyte overflow prevention limit index of the lead-acid battery group, and obtaining the water injection pipe diameters of the main loop and branch loop of the water injection network and the water pressure of the main loop of the water injection network; S02, based on the battery cell water injection parameters, combined with the water injection pipe diameter and the water pressure of the main water injection circuit, a normal divergent pipe network architecture for automatic water injection of lead-acid battery groups is constructed to perform fully automatic synchronous water injection of a large number of batteries; S03, detecting the battery electrolyte level during the battery water filling process, and obtaining the battery electrolyte level detection data; detecting the flow rate of the water filling pipe at the end of the divergent pipe network during the battery water filling process, and obtaining the flow rate detection data of the water filling pipe at the end of the pipe network; S04, control and maintain the balance of water outlet pressure at the water injection ports at the head end and the end of the divergent pipe network, so that the water injection process of multiple batteries is synchronized and balanced; and shut off the water injection pipeline when the electrolyte overflow prevention limit index is reached; solve the problem of electrolyte overflow or electrolyte shortage during the synchronous water injection process of a large number of batteries in the battery pack.

[0010] Preferably, S01 includes: S011, obtaining large-scale battery monomer water injection parameters of the lead-acid battery group; setting electrolyte overflow prevention limit indicators of the lead-acid battery group; S012, obtaining the diameters of the water injection pipes of the main water injection network loop and the branch water injection network loop and the water pressure of the main water injection network loop; The electrolyte overflow prevention limit indicators include: the electrolyte level reaching standard height indicator and the maximum overflow prevention liquid level indicator.

[0011] Preferably, S02 includes: S021, analyzing the number of batteries supplied by the water injection of the water injection network branch circuit according to the water injection parameters of the battery cells, combined with the water injection pipe diameters of the main circuit and the branch circuit of the water injection network and the water pressure of the main circuit; S022, based on the number of batteries supplied with water, a normal divergent pipe network architecture for automatic water injection of lead-acid battery groups is constructed; S023, through the automatic water injection normal divergence pipe network architecture, according to the lead-acid battery group architecture and the number of batteries, the lead-acid battery group composed of a large number of single batteries according to the actual power combination is fully automatically injected with water.

[0012] Preferably, S03 includes: S031, according to the electrolyte overflow prevention limit index, detecting the battery electrolyte level during the battery water filling process by means of a battery liquid level sensor, and obtaining battery electrolyte level detection data; the battery liquid level sensor is disposed in the battery electrolyte; S032, detecting the flow rate of the water injection pipe at the end of the divergent pipe network during the battery water injection process by using a divergent pipe network outlet flow meter to obtain the water injection pipe flow rate detection data at the end of the pipe network; the divergent pipe network outlet flow meter is set at the water outlet of the divergent pipe network outlet.

[0013] Preferably, S04 includes: S041, according to the battery electrolyte level detection data and the water injection pipe flow detection data at the end of the pipe network, control the invisible current limiter to keep the water outlet pressure of the water injection port at the head end and the end of the divergent pipe network balanced, so that the water injection process of multiple batteries is synchronized and balanced; S042, controls the water injection flow shut-off unit of the automatic water injection normal divergent pipe network architecture through the battery water injection monitoring center, and shuts off the water injection pipeline when the electrolyte overflow prevention limit index is reached during the synchronous water injection process of multiple batteries, thereby solving the problem of electrolyte overflow or electrolyte shortage during the synchronous water injection process of a large number of batteries in the battery pack.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects: The present invention provides a pressure balance control system and method for the liquid output port of a normal divergent pipe network. Through the divergent pipe network battery group structure subsystem, the large-scale battery monomer water injection parameters of the lead-acid battery group are obtained, the electrolyte overflow prevention limit index of the lead-acid battery group is set, and the water injection pipe diameter of the main loop and the branch loop of the water injection pipe network and the water pressure of the main water injection circuit are obtained; the automatic water injection normal divergent pipe network subsystem is combined to construct the automatic water injection of the lead-acid battery group according to the battery monomer water injection parameters, combined with the water injection pipe diameter and the water pressure of the main water injection circuit. Normal divergent pipe network architecture, for fully automatic synchronous water injection of a large number of batteries; electrolyte level water injection flow detection subsystem, for detecting the battery electrolyte level during the battery water injection process, and obtaining the battery electrolyte level detection data; for detecting the water injection pipe flow at the end of the divergent pipe network during the battery water injection process, and obtaining the water injection pipe flow detection data at the end of the pipe network; flow-limiting flow shut-off control balance subsystem, for controlling and maintaining the water outlet pressure balance of the water injection port at the head end of the divergent pipe network and the end of the divergent pipe network, so that the water injection process of multiple batteries is synchronized and balanced; and when the electrolyte overflow prevention limit index is reached, Shut off the water injection pipeline; solve the problem of electrolyte overflow or electrolyte shortage during the synchronous water injection process of a large number of batteries in the battery group; can accurately inject water into the single battery of a large-scale lead-acid battery group, and the safety of the electrolyte overflow prevention limit of the lead-acid battery group is greatly improved; can adapt to the water injection parameters of the battery single battery, and meet the water injection pipeline diameter and water pressure of the main water injection circuit, and significantly improve the balance of the process of fully automatic synchronous water injection of a large number of batteries through the normal divergence pipe network architecture of automatic water injection of lead-acid battery group, greatly improve the degree of synchronization, and significantly reduce the risk of electrolyte overflow; It can accurately detect the battery electrolyte level during the battery water filling process, and the accuracy of the battery electrolyte level detection data is significantly improved; the accuracy of the water filling pipe flow detection data at the end of the divergent pipe network during the battery water filling process is significantly improved; the water outlet pressure balance of the water filling ports at the head end and the end of the divergent pipe network is greatly improved, and the synchronization balance of multiple battery water filling processes is significantly improved; the electrolyte overflow prevention limit shuts off the water filling pipeline more timely; solving the problem of electrolyte overflow or electrolyte shortage during the synchronous water filling process of a large number of batteries in the battery pack is of great significance and has significant effects.

[0015] The present invention describes a pressure balancing and controlling system and method for the liquid output port of a normally divergent pipe network. Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by technicians in this field through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1This is a diagram of an embodiment of a pressure balance control system for a liquid output port of a normally divergent pipe network described in the present invention.

[0017] Figure 2 This is another embodiment diagram of a pressure balance control system for a liquid output port of a normally divergent pipe network described in the present invention.

[0018] Figure 3 This is a diagram showing an embodiment of a pressure balancing and controlling system and method for a liquid output port of a normally diverging pipe network according to the present invention. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments so that those skilled in the art can implement the invention according to the instructions. Figure 1-Figure 3 As shown, the present invention provides a pressure balance control system for a liquid output port of a normal divergent pipe network, comprising: Diverge the pipe network battery group structure subsystem, obtain the large-scale battery monomer water injection parameters of the lead-acid battery group, set the electrolyte overflow prevention limit index of the lead-acid battery group, and obtain the water injection pipe diameter of the main loop and branch loop of the water injection pipe network and the water pressure of the main water injection loop; The automatic water injection normal divergence pipe network subsystem constructs the automatic water injection normal divergence pipe network architecture for lead-acid battery groups based on the water injection parameters of the battery cells, combined with the diameter of the water injection pipe and the water pressure of the main water injection circuit, to automatically and synchronously inject water into a large number of batteries; The electrolyte level and water injection flow detection subsystem detects the battery electrolyte level during the battery water injection process and obtains the battery electrolyte level detection data; detects the flow of the water injection pipe at the end of the divergent pipe network during the battery water injection process and obtains the flow detection data of the water injection pipe at the end of the pipe network; The flow-limiting shut-off control balancing subsystem controls and maintains the water outlet pressure balance between the water injection ports at the head and end of the divergent pipe network, so that the water injection process of multiple batteries is synchronized and balanced; and shuts off the water injection pipeline when the electrolyte overflow prevention limit index is reached; solves the problem of electrolyte overflow or electrolyte shortage during the synchronous water injection process of a large number of batteries in the battery pack.

[0020] The principle and effect of the above technical solution are as follows: the present invention provides a pressure balance control system for the liquid output port of a normal divergent pipe network, including: a divergent pipe network battery group structure subsystem, which obtains the large-scale battery monomer water injection parameters of the lead-acid battery group, sets the electrolyte overflow prevention limit index of the lead-acid battery group, obtains the water injection pipe diameter of the main loop and the branch loop of the water injection pipe network and the water pressure of the main water injection circuit; an automatic water injection normal divergent pipe network subsystem, which, according to the battery monomer water injection parameters, combines the water injection pipe diameter and the water pressure of the main water injection circuit, constructs a combination of the lead-acid battery group and the main water injection circuit. The normal divergent pipe network architecture for automatic water injection of battery groups can be used to perform fully automatic and synchronous water injection of a large number of batteries; the electrolyte level water injection flow detection subsystem detects the battery electrolyte level during the battery water injection process and obtains the battery electrolyte level detection data; detects the water injection pipe flow at the end of the divergent pipe network during the battery water injection process and obtains the water injection pipe flow detection data at the end of the pipe network; the flow-limiting flow shut-off control balance subsystem controls and maintains the water outlet pressure balance between the water injection port at the head end of the divergent pipe network and the end of the divergent pipe network, so that the water injection process of multiple batteries is synchronized and balanced; and when the electrolyte is prevented from overflowing, the water pressure at the injection port at the end of the divergent pipe network is balanced. The water injection pipeline is shut down when the limit index is reached; the problem of electrolyte overflow or electrolyte shortage during the synchronous water injection process of a large number of batteries in the battery group is solved; it can accurately inject water into large-scale battery cells of the lead-acid battery group, and the safety of the electrolyte overflow prevention limit of the lead-acid battery group is greatly improved; it can adapt to the water injection parameters of the battery cells, and comply with the water injection pipeline diameter and the water pressure of the main water injection circuit. The normal divergent pipe network architecture of the automatic water injection of the lead-acid battery group significantly improves the process balance of the fully automatic synchronous water injection of a large number of batteries, greatly improves the degree of synchronization, and significantly reduces the risk of electrolyte overflow. Reduce; can accurately detect the battery electrolyte level during the battery water filling process, and the accuracy of the battery electrolyte level detection data is significantly improved; the accuracy of the water injection pipe flow detection data at the end of the divergent pipe network during the battery water filling process is significantly improved; the water outlet pressure balance of the water injection port at the head end of the divergent pipe network and the end of the divergent pipe network is greatly improved, and the synchronization balance of multiple battery water filling processes is significantly improved; the electrolyte overflow prevention limit shuts off the water injection pipeline more timely; solving the problem of electrolyte overflow or electrolyte shortage during the synchronous water filling process of a large number of batteries in the battery pack is of great significance and has significant effects.

[0021] In one embodiment, the divergent pipe network battery group structure subsystem includes: The water injection parameter overflow prevention index subsystem obtains the large-scale battery monomer water injection parameters of the lead-acid battery group; sets the electrolyte overflow prevention limit index of the lead-acid battery group; The pipeline diameter loop water pressure subsystem obtains the water injection pipeline diameter of the main loop and branch loop of the water injection network and the water pressure of the main loop of the water injection network; The electrolyte overflow prevention limit indicators include: the electrolyte level reaching standard height indicator and the maximum overflow prevention liquid level indicator.

[0022] The principles and effects of the above technical solution are as follows: the divergent pipe network battery group structure subsystem includes: a water injection parameter overflow prevention index subsystem, which obtains the large-scale battery cell water injection parameters of the lead-acid battery group; sets the electrolyte overflow prevention limit index of the lead-acid battery group; a pipeline diameter loop water pressure subsystem, which obtains the water injection pipeline diameter and the water pressure of the main injection loop of the water injection network main loop and the water injection network branch loop; the electrolyte overflow prevention limit index includes: the electrolyte level reaching height index and the maximum height index of the overflow prevention liquid level; it can carry out large-scale battery cell precise water injection of the lead-acid battery group, and the safety of the electrolyte overflow prevention limit of the lead-acid battery group is greatly improved.

[0023] In one embodiment, the automatic water injection normal divergence pipe network subsystem includes: The water injection supply battery quantity analysis subsystem analyzes the number of batteries supplied by the water injection network branch circuit according to the water injection parameters of the battery cells, combined with the water injection pipe diameters of the main circuit and branch circuit of the water injection network and the water pressure of the main circuit; The automatic water injection normal divergence pipe network architecture subsystem combines and constructs the automatic water injection normal divergence pipe network architecture for lead-acid battery groups according to the number of batteries supplied by water injection; The divergent pipe network synchronous water injection subsystem, through the automatic water injection normal divergent pipe network architecture, according to the lead-acid battery group architecture and the number of batteries, performs fully automatic battery synchronous water injection for the lead-acid battery group composed of a large number of single batteries according to the actual power combination.

[0024] The principle and effect of the above technical solution are as follows: the automatic water injection normal divergence pipe network subsystem includes: a water injection supply battery quantity analysis subsystem, which analyzes the number of water injection supply batteries for the water injection network branch circuit according to the water injection parameters of the battery cells, combined with the water injection pipe diameters of the water injection network main circuit and the water injection network branch circuit and the water pressure of the water injection main circuit; an automatic water injection normal divergence pipe network architecture subsystem, which combines and constructs the automatic water injection normal divergence pipe network architecture for lead-acid battery groups according to the number of water injection supply batteries; a divergence pipe network synchronous water injection subsystem, which, through the automatic water injection normal divergence pipe network architecture, according to the lead-acid battery group architecture and the number of batteries, combines a large number of single batteries according to the actual power usage. Lead-acid battery group, fully automatic battery synchronous water injection; automatic water injection normal divergence network architecture includes: battery group water injection network main loop and water injection network branch loop, the water injection network branch loop output port is directly connected to the water injection flow shut-off unit of the water injection device; an invisible current limiter is placed at the connection point between the main loop and the branch loop to adjust the water flow; including the construction of a normally distributed flow uniformly divergent network; so that the water flow rate at each port of the main loop is in line with the balance of the main loop; and the water flow limiting coefficient is adjusted in each branch loop to achieve precise balance of the water injection flow; significantly improve the accuracy of water injection flow control, maintain a balanced rise in the electrolyte level of all batteries, and perform fully automatic water injection intelligent flow shut-off control.

[0025] In one embodiment, the electrolyte level water injection flow rate detection subsystem includes: The electrolyte level detection subsystem detects the battery electrolyte level during the battery water filling process through a battery level sensor according to the electrolyte overflow prevention limit index, and obtains the battery electrolyte level detection data; the battery level sensor is arranged in the battery electrolyte; The divergent pipe network flow metering subsystem detects the flow of the water injection pipe at the end of the divergent pipe network during the battery water injection process through the divergent pipe network outlet flow meter, and obtains the water injection pipe flow detection data at the end of the pipe network; the divergent pipe network outlet flow meter is set at the water outlet of the divergent pipe network outlet.

[0026] The principle and effect of the above technical solution are as follows: the electrolyte level water injection flow detection subsystem includes: an electrolyte level detection subsystem, which detects the battery electrolyte level during the battery water injection process through a battery level sensor according to the electrolyte overflow prevention limit index, and obtains the battery electrolyte level detection data; the battery level sensor is arranged in the battery electrolyte; a divergent pipe network flow metering subsystem, which detects the flow of the water injection pipe at the end of the divergent pipe network during the battery water injection process through a divergent pipe network pipe mouth flow meter, and obtains the flow detection data of the water injection pipe at the end of the pipe network; the divergent pipe network pipe mouth flow meter is arranged at the water outlet of the divergent pipe network pipe mouth; according to the electrolyte overflow prevention limit index, the battery electrolyte level during the battery water injection process is detected by the battery level sensor, and the battery electrolyte level detection data is obtained. The battery electrolyte level is detected by a marine acceleration sensor when the ship is swinging in the waves; the liquid level swing error caused by the swing of the battery liquid surface caused by the swing of the ship is compensated according to the swing of the ship in the waves; when the ship swings left and right, superimposed on the ups and downs and accelerates and decelerates, the dynamic liquid level of the battery is formed by the left and right swing of the ship, superimposed on the ups and downs and acceleration and deceleration; the static horizontal state is set as the static liquid level of the battery; the dynamic and static liquid level errors between the dynamic liquid level of the battery and the static liquid level of the battery are counted when the ship swings left and right, superimposed on the ups and downs and acceleration and deceleration; according to the dynamic and static liquid level errors, dynamic and static liquid level errors are compensated to obtain the battery electrolyte level detection data; the detection accuracy of the battery electrolyte level is significantly improved when the ship swings with the waves and the electrolyte level is dynamic under the conditions of acceleration and deceleration; the accuracy of the flow detection data of the water injection pipe at the end of the divergent pipe network is significantly improved during the battery water injection process.

[0027] In one embodiment, the flow-limiting flow-shutoff control balancing subsystem includes: The invisible current limiting control subsystem controls the invisible current limiter according to the battery electrolyte level detection data and the water injection pipe flow detection data at the end of the pipe network, so as to keep the water outlet pressure of the water injection port at the head end and the end end of the divergent pipe network balanced, so that the water injection process of multiple batteries is synchronized and balanced; The water injection flow shut-off synchronization subsystem controls the water injection flow shut-off unit of the automatic water injection normal divergence pipe network architecture through the battery water injection monitoring center. The water injection process of multiple batteries is synchronized and balanced, and the water injection pipeline is shut off when the electrolyte overflow prevention limit index is reached, so as to solve the problem of electrolyte overflow or electrolyte shortage during the synchronous water injection process of a large number of batteries in the battery group.

[0028] The principle and effect of the above technical solution are as follows: the flow-limiting flow-off control balancing subsystem includes: an invisible flow-limiting control subsystem, which controls the invisible flow limiter according to the battery electrolyte level detection data and the water injection pipe flow detection data at the end of the pipe network, keeps the water outlet pressure of the water injection port at the head end of the divergent pipe network and the end of the divergent pipe network balanced, so that the water injection process of multiple batteries is synchronized and balanced; the water injection flow-off synchronization subsystem controls the water injection flow-off unit of the automatic water injection normal divergent pipe network architecture through the battery water injection monitoring center, synchronizes and balances the water injection process of multiple batteries, and shuts off the water injection pipeline when the electrolyte overflow prevention limit index is reached, so as to solve the problem of electrolyte overflow or electrolyte shortage in the synchronous water injection process of a large number of batteries in the battery pack; Figure 1 As shown: the automatic water injection normal divergence pipe network architecture is controlled by the battery water injection monitoring center to perform fully automatic water injection, and the pipe network water injection flow and pressure balance control include: each outlet port in the branch water pipe is connected by a tee and a straight connector, and a flow restrictor is embedded in the intermediate connecting pipe between the tee and the straight to construct an invisible flow restrictor, and the invisible flow restrictor is tightly matched with the intermediate connecting pipe wall; the invisible flow restrictor changes the inner diameter of the pipe section to change the flow and is expressed by multiple pipe sections, changing the inner diameter of the pipe section, that is, changing the flow restriction coefficient of the pipe section, where changing the aperture of the pipe section is a coarse adjustment, and changing the length of the pipe section is a fine adjustment; the water flow balance of each output port is obtained (Q1=Q2=⋯=Qn); the parameters are expressed as follows: Pa: main circuit water inlet flow Pa (1…n) main circuit water outlet flow TP (1…n) main circuit tee Pa (11…n1) branch circuit each water flow TP (11...n1) branch circuit tee Pa (21...n1) branch circuit each water flow TP (12…n2) branch circuit tee Pa (n1…nn) branch circuit each water flow TP (1n…nn) branch circuit tee fx (1...n) main circuit water flow adjustment limiter (variable) f (1…n) Main circuit water flow resistance (constant) SB (11…n1) battery SB (12…n2) battery SB (1n…nn) battery fx (11...n1) branch circuit water flow adjustment limiter (variable) fx (12...n2) branch circuit water flow adjustment limiter (variable) fx (1n…nn) branch circuit water flow adjustment limiter (variable) f (11…n1) branch circuit water flow resistance (constant) f (12…n2) branch circuit water flow resistance (constant) f (1n…nn) branch circuit water flow resistance (constant) illustrate: The water flow resistance is constant, and the pipe diameter and length of this part are equal; Depend on Figure 1 It can be seen that: Inlet flow Equal to the main circuit port The sum of water flow; Branch Circuit The water flow rate is equal to the branch port The sum of water flow; Branch Circuit The water flow rate is equal to the branch port The sum of water flow; … Branch Circuit The water flow rate is equal to the branch port The sum of water flow; get: Adjustment , current limiting coefficient, we get Pa1=Pa2=…=Pan Pa1= Pa11+Pa21+…+Pan1 Adjustment The current limiting factor is Pa11=Pa21=…=Pan1 Pa2= Pa12+Pa22+…+Pan2 Adjustment The current limiting factor is Pa12=Pa22=…=Pan2 Same reason Pan=Pa1n+Pa2n+…+Pann Adjustment The current limiting factor is Pa1n=Pa2n=…=Pann : Output tube current limit (constant) fa1= fa2=…= fan Water flow of each branch section of the main circuit Pa1=Pa-P1 Pa2=P1-P2= Pa-Pa1-P2 Pa3=P2-P3= Pa-Pa1-Pa2-P4 Pa1=Pa 1 / n=Pa-Paf1-(Pa-Paf1)fx1-P1 =Pa-Paf1-(Pa-Paf1)fx1-P1 =(Pa-Paf1)(1-fx1)-P1 =Pa(1-f1)(1-fx1)-P1 Pax=Pa-(x-1)P1-P(x-1) The water outlet flow of each port Pa1=Pa2=…=Pan of the main circuit meets the design requirements. Similarly, the water flow limiting coefficient is adjusted in each branch circuit to achieve precise balance of the water injection flow, which significantly improves the accuracy of water injection flow control.

[0029] The present invention provides a pressure balance control method for a liquid output port of a normal divergent pipe network, comprising: S01, obtaining large-scale battery cell water injection parameters of the lead-acid battery group, setting the electrolyte overflow prevention limit index of the lead-acid battery group, and obtaining the water injection pipe diameters of the main loop and branch loop of the water injection network and the water pressure of the main loop of the water injection network; S02, based on the battery cell water injection parameters, combined with the water injection pipe diameter and the water pressure of the main water injection circuit, a normal divergent pipe network architecture for automatic water injection of lead-acid battery groups is constructed to perform fully automatic synchronous water injection of a large number of batteries; S03, detecting the battery electrolyte level during the battery water filling process, and obtaining the battery electrolyte level detection data; detecting the flow rate of the water filling pipe at the end of the divergent pipe network during the battery water filling process, and obtaining the flow rate detection data of the water filling pipe at the end of the pipe network; S04, control and maintain the balance of water outlet pressure at the water injection ports at the head end and the end of the divergent pipe network, so that the water injection process of multiple batteries is synchronized and balanced; and shut off the water injection pipeline when the electrolyte overflow prevention limit index is reached; solve the problem of electrolyte overflow or electrolyte shortage during the synchronous water injection process of a large number of batteries in the battery pack.

[0030] The principle and effect of the above technical scheme are as follows: the present invention provides a pressure balance control method for the liquid output port of a normal divergent pipe network, including: obtaining large-scale battery single-cell water injection parameters of a lead-acid battery group, setting an electrolyte overflow prevention limit index for the lead-acid battery group, obtaining the water injection pipe diameter of the main circuit of the water injection pipe network and the water pressure of the main circuit of the water injection pipe network; according to the battery single-cell water injection parameters, combined with the water injection pipe diameter and the water pressure of the main circuit of the water injection pipe network, a normal divergent pipe network architecture for automatic water injection of a lead-acid battery group is constructed to perform full-automatic synchronous water injection of a large number of batteries; detecting the battery electrolyte level during the battery water injection process, and obtaining the battery electrolyte level detection data; detecting the water injection pipe flow at the end of the divergent pipe network during the battery water injection process, and obtaining the water injection pipe flow detection data at the end of the pipe network; controlling and maintaining the water outlet pressure of the water injection port at the head end of the divergent pipe network and the end of the divergent pipe network to make the water injection process of multiple batteries synchronously balanced; and shutting off the water injection pipe when the electrolyte overflow prevention limit index is reached; solving the problem of synchronous water injection of a large number of batteries in the battery group The invention can solve the problem of electrolyte overflow or electrolyte shortage in the process; it can accurately inject water into the single battery of a large-scale lead-acid battery group, and the safety of electrolyte overflow prevention limit of the lead-acid battery group is greatly improved; it can adapt to the water injection parameters of the battery single battery, and meet the diameter of the water injection pipeline and the water pressure of the main water injection circuit. Through the normal divergent pipe network architecture of automatic water injection of the lead-acid battery group, the process balance of fully automatic synchronous water injection of a large number of batteries is significantly improved, the degree of synchronization is greatly improved, and the risk of electrolyte overflow is significantly reduced; it can accurately detect the electrolyte level of the battery during the water injection process, and the accuracy of the battery electrolyte level detection data is significantly improved; the accuracy of the flow detection data of the water injection pipe at the end of the divergent pipe network during the battery water injection process is significantly improved; the balance of the water outlet pressure of the water injection port at the head end and the end of the divergent pipe network is greatly improved, and the synchronization balance of the water injection process of multiple batteries is significantly improved; the electrolyte overflow prevention limit shuts off the water injection pipeline more timely; solving the problem of electrolyte overflow or electrolyte shortage in the process of synchronous water injection of a large number of batteries in the battery group is of great significance and has significant effects.

[0031] In one embodiment, S01 includes: S011, obtaining large-scale battery monomer water injection parameters of the lead-acid battery group; setting electrolyte overflow prevention limit indicators of the lead-acid battery group; S012, obtaining the diameters of the water injection pipes of the main water injection network loop and the branch water injection network loop and the water pressure of the main water injection network loop; The electrolyte overflow prevention limit indicators include: the electrolyte level reaching standard height indicator and the maximum overflow prevention liquid level indicator.

[0032] The principles and effects of the above technical solution are: obtaining large-scale battery cell water injection parameters of lead-acid battery groups; setting electrolyte overflow prevention limit indicators for lead-acid battery groups; obtaining the water injection pipe diameters of the main and branch circuits of the water injection network and the water pressure of the main water injection circuit; the electrolyte overflow prevention limit indicators include: the electrolyte level reaching height indicator and the maximum overflow prevention liquid level indicator; and being able to accurately inject water into large-scale battery cells of lead-acid battery groups, greatly improving the safety of electrolyte overflow prevention limits for lead-acid battery groups.

[0033] In one embodiment, S02 includes: S021, analyzing the number of batteries supplied by the water injection of the water injection network branch circuit according to the water injection parameters of the battery cells, combined with the water injection pipe diameters of the main circuit and the branch circuit of the water injection network and the water pressure of the main circuit; S022, based on the number of batteries supplied with water, a normal divergent pipe network architecture for automatic water injection of lead-acid battery groups is constructed; S023, through the automatic water injection normal divergence pipe network architecture, according to the lead-acid battery group architecture and the number of batteries, the lead-acid battery group composed of a large number of single batteries according to the actual power combination is fully automatically injected with water.

[0034] The principle and effect of the above technical solution are as follows: according to the water injection parameters of the battery cells, combined with the diameters of the water injection pipes of the main and branch circuits of the water injection network and the water pressure of the main water injection circuit, the number of batteries supplied by the water injection network branch circuit is analyzed; according to the number of batteries supplied by the water injection network, a normal divergent pipe network architecture for automatic water injection of lead-acid battery groups is constructed in combination; through the automatic water injection normal divergent pipe network architecture, according to the lead-acid battery group architecture and the number of batteries, a large number of single batteries are combined according to the actual power usage of the lead-acid battery group, and the lead-acid battery group is automatically watered synchronously; the automatic water injection normal divergent pipe network architecture The network architecture includes: a main loop of the battery pack water injection network and a branch loop of the water injection network. The output port of the branch loop of the water injection network is directly connected to the water injection flow shut-off unit of the water injection device; an invisible flow limiter is placed at the connection point between the main loop and the branch loop to adjust the water flow; including the construction of a normally distributed flow uniformly diverging network; so that the water flow rate at each port of the main loop is in line with the balance of the main loop; and the water flow limiting coefficient is adjusted in each branch loop to achieve precise balance of the water injection flow; significantly improve the accuracy of water injection flow control, maintain a balanced rise in the electrolyte level of all batteries, and perform fully automatic water injection intelligent flow shut-off control.

[0035] In one embodiment, S03 includes: S031, according to the electrolyte overflow prevention limit index, detecting the battery electrolyte level during the battery water filling process by means of a battery liquid level sensor, and obtaining battery electrolyte level detection data; the battery liquid level sensor is disposed in the battery electrolyte; S032, detecting the flow rate of the water injection pipe at the end of the divergent pipe network during the battery water injection process by using a divergent pipe network outlet flow meter to obtain the water injection pipe flow rate detection data at the end of the pipe network; the divergent pipe network outlet flow meter is set at the water outlet of the divergent pipe network outlet.

[0036] The principle and effect of the above technical solution are as follows: according to the electrolyte overflow prevention limit index, the battery electrolyte level during the battery water filling process is detected by a battery level sensor to obtain the battery electrolyte level detection data; the battery level sensor is arranged in the battery electrolyte; the divergent pipe network outlet flow meter is used to detect the flow of the water injection pipe at the end of the divergent pipe network during the battery water filling process, and the water injection pipe flow detection data at the end of the pipe network is obtained; the divergent pipe network outlet flow meter is arranged at the water outlet of the divergent pipe network outlet; according to the electrolyte overflow prevention limit index, the battery electrolyte level during the battery water filling process is detected by a battery level sensor, and the battery electrolyte level detection data is obtained, including: according to the electrolyte overflow prevention limit index, the battery electrolyte level during the battery water filling process is detected by a battery level sensor, and a marine acceleration sensor is used Detect the swaying state of the ship in the waves; reversely compensate for the liquid level swing error of the battery caused by the swaying of the ship in the waves; when the ship swings left and right and superimposes the ups and downs and accelerates and decelerates, the left and right swings of the ship superimpose the ups and downs and accelerates and decelerates to form the dynamic liquid level of the battery; set the static horizontal state as the static liquid level of the battery; count the dynamic and static liquid level errors between the dynamic liquid level of the battery and the static liquid level of the battery under the conditions of the left and right swings of the ship superimposed the ups and downs and accelerates and decelerates; according to the dynamic and static liquid level errors, perform dynamic and static liquid level error compensation to obtain battery electrolyte level detection data; the detection accuracy of the battery electrolyte level is significantly improved under the dynamic conditions of the electrolyte level of the ship swinging with the waves and accelerating and decelerating; the detection accuracy of the flow rate of the water injection pipe at the end of the divergent pipe network is significantly improved during the battery water injection process.

[0037] In one embodiment, S04 includes: S041, according to the battery electrolyte level detection data and the water injection pipe flow detection data at the end of the pipe network, control the invisible current limiter to keep the water outlet pressure of the water injection port at the head end and the end of the divergent pipe network balanced, so that the water injection process of multiple batteries is synchronized and balanced; S042, controls the water injection flow shut-off unit of the automatic water injection normal divergent pipe network architecture through the battery water injection monitoring center, and shuts off the water injection pipeline when the electrolyte overflow prevention limit index is reached during the synchronous water injection process of multiple batteries, thereby solving the problem of electrolyte overflow or electrolyte shortage during the synchronous water injection process of a large number of batteries in the battery pack.

[0038] The principle and effect of the above technical solution are as follows: according to the battery electrolyte level detection data and the water injection pipe flow detection data at the end of the pipe network, the invisible current limiter is controlled to keep the water outlet pressure of the water injection port at the head end and the end of the divergent pipe network balanced, so that the water injection process of multiple batteries is synchronized and balanced; the water injection flow shut-off unit of the automatic water injection normal divergent pipe network architecture is controlled by the battery water injection monitoring center, and the water injection pipeline is shut off when the electrolyte overflow prevention limit index is reached during the synchronous water injection process of multiple batteries, so as to solve the problem of electrolyte overflow or electrolyte shortage during the synchronous water injection process of a large number of batteries in the battery pack; Figure 1 As shown: the automatic water injection normal divergence pipe network architecture is controlled by the battery water injection monitoring center to perform fully automatic water injection, and the pipe network water injection flow and pressure balance control include: each outlet port in the branch water pipe is connected by a tee and a straight connector, and a flow restrictor is embedded in the intermediate connecting pipe between the tee and the straight to construct an invisible flow restrictor, and the invisible flow restrictor is tightly matched with the intermediate connecting pipe wall; the invisible flow restrictor changes the inner diameter of the pipe section to change the flow and is expressed by multiple pipe sections, changing the inner diameter of the pipe section, that is, changing the flow restriction coefficient of the pipe section, where changing the aperture of the pipe section is a coarse adjustment, and changing the length of the pipe section is a fine adjustment; the water flow balance of each output port is obtained (Q1=Q2=⋯=Qn); the parameters are expressed as follows: Pa: main circuit water inlet flow Pa (1…n) main circuit water outlet flow TP (1…n) main circuit tee Pa (11…n1) branch circuit each water flow TP (11...n1) branch circuit tee Pa (21...n1) branch circuit each water flow TP (12…n2) branch circuit tee Pa (n1…nn) branch circuit each water flow TP (1n…nn) branch circuit tee fx (1...n) main circuit water flow adjustment limiter (variable) f (1…n) Main circuit water flow resistance (constant) SB (11…n1) battery SB (12…n2) battery SB (1n…nn) battery fx (11...n1) branch circuit water flow adjustment limiter (variable) fx (12...n2) branch circuit water flow adjustment limiter (variable) fx (1n…nn) branch circuit water flow adjustment limiter (variable) f (11…n1) branch circuit water flow resistance (constant) f (12…n2) branch circuit water flow resistance (constant) f (1n…nn) branch circuit water flow resistance (constant) illustrate: The water flow resistance is constant, and the pipe diameter and length of this part are equal; Depend on Figure 1 It can be seen that: Inlet flow Equal to the main circuit port The sum of water flow; Branch Circuit The water flow rate is equal to the branch port The sum of water flow; Branch Circuit The water flow rate is equal to the branch port The sum of water flow; … Branch Circuit The water flow rate is equal to the branch port The sum of water flow; get: Adjustment , current limiting coefficient, we get Pa1=Pa2=…=Pan Pa1= Pa11+Pa21+…+Pan1 Adjustment The current limiting factor is Pa11=Pa21=…=Pan1 Pa2= Pa12+Pa22+…+Pan2 Adjustment The current limiting factor is Pa12=Pa22=…=Pan2 Same reason Pan=Pa1n+Pa2n+…+Pann Adjustment The current limiting factor is Pa1n=Pa2n=…=Pann : Output tube current limit (constant) fa1= fa2=…= fan Water flow of each branch section of the main circuit Pa1=Pa-P1 Pa2=P1-P2= Pa-Pa1-P2 Pa3=P2-P3= Pa-Pa1-Pa2-P4 Pa1=Pa 1 / n=Pa-Paf1-(Pa-Paf1)fx1-P1 =Pa-Paf1-(Pa-Paf1)fx1-P1 =(Pa-Paf1)(1-fx1)-P1 =Pa(1-f1)(1-fx1)-P1 Pax=Pa-(x-1)P1-P(x-1) The water outlet flow of each port Pa1=Pa2=…=Pan of the main circuit meets the design requirements. Similarly, the water flow limiting coefficient is adjusted in each branch circuit to achieve precise balance of the water injection flow, which significantly improves the accuracy of water injection flow control.

[0039] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A pressure balance control system for a liquid output port of a normal divergent pipe network, characterized in that: include: Diverge the pipe network battery group structure subsystem, obtain the large-scale battery monomer water injection parameters of the lead-acid battery group, set the electrolyte overflow prevention limit index of the lead-acid battery group, and obtain the water injection pipe diameter of the main loop and branch loop of the water injection pipe network and the water pressure of the main water injection loop; The automatic water injection normal divergence pipe network subsystem constructs the automatic water injection normal divergence pipe network architecture for lead-acid battery groups based on the water injection parameters of the battery cells, combined with the diameter of the water injection pipe and the water pressure of the main water injection circuit, to automatically and synchronously inject water into a large number of batteries; The electrolyte level and water injection flow detection subsystem detects the battery electrolyte level during the battery water injection process and obtains the battery electrolyte level detection data; detects the flow of the water injection pipe at the end of the divergent pipe network during the battery water injection process and obtains the flow detection data of the water injection pipe at the end of the pipe network; The flow-limiting and flow-shutoff control balancing subsystem controls and maintains the water outlet pressure balance at the water injection ports at the head end and the end of the diverging pipe network, so that the water injection process of multiple batteries is synchronized and balanced; and the water injection pipeline is shut off when the electrolyte overflow prevention limit index is reached; Solve the problem of electrolyte overflow or electrolyte shortage during the simultaneous water injection process of a large number of batteries in a battery pack.

2. A pressure balance control system for a liquid output port of a normal divergent pipe network according to claim 1, characterized in that: The divergent pipe network battery group structure subsystem includes: The water injection parameter overflow prevention index subsystem obtains the large-scale battery monomer water injection parameters of the lead-acid battery group; sets the electrolyte overflow prevention limit index of the lead-acid battery group; The pipeline diameter loop water pressure subsystem obtains the water injection pipeline diameter of the main loop and branch loop of the water injection network and the water pressure of the main loop of the water injection network; The electrolyte overflow prevention limit indicators include: the electrolyte level reaching standard height indicator and the maximum overflow prevention liquid level indicator.

3. A pressure balance control system for a liquid output port of a normal divergent pipe network according to claim 1, characterized in that: The automatic water injection normal divergence pipe network subsystem includes: The water injection supply battery quantity analysis subsystem analyzes the number of batteries supplied by the water injection network branch circuit according to the water injection parameters of the battery cells, combined with the water injection pipe diameters of the main circuit and branch circuit of the water injection network and the water pressure of the main circuit; The automatic water injection normal divergence pipe network architecture subsystem combines and constructs the automatic water injection normal divergence pipe network architecture for lead-acid battery groups according to the number of batteries supplied by water injection; The divergent pipe network synchronous water injection subsystem, through the automatic water injection normal divergent pipe network architecture, according to the lead-acid battery group architecture and the number of batteries, performs fully automatic battery synchronous water injection for the lead-acid battery group composed of a large number of single batteries according to the actual power combination.

4. A pressure balance control system for a liquid output port of a normal divergent pipe network according to claim 1, characterized in that: The electrolyte level and water injection flow detection subsystem includes: The electrolyte level detection subsystem detects the battery electrolyte level during the battery water filling process through a battery level sensor according to the electrolyte overflow prevention limit index, and obtains the battery electrolyte level detection data; the battery level sensor is arranged in the battery electrolyte; The divergent pipe network flow metering subsystem detects the flow of the water injection pipe at the end of the divergent pipe network during the battery water injection process through the divergent pipe network outlet flow meter, and obtains the water injection pipe flow detection data at the end of the pipe network; the divergent pipe network outlet flow meter is set at the water outlet of the divergent pipe network outlet.

5. The pressure balance control system for the liquid output port of a normal divergent pipe network according to claim 1, characterized in that: The flow-limiting, flow-shutoff control and balancing subsystem includes: The invisible current limiting control subsystem controls the invisible current limiter according to the battery electrolyte level detection data and the water injection pipe flow detection data at the end of the pipe network, so as to keep the water outlet pressure of the water injection port at the head end and the end end of the divergent pipe network balanced, so that the water injection process of multiple batteries is synchronized and balanced; The water injection flow shut-off synchronization subsystem controls the water injection flow shut-off unit of the automatic water injection normal divergence pipe network architecture through the battery water injection monitoring center. The water injection process of multiple batteries is synchronized and balanced, and the water injection pipeline is shut off when the electrolyte overflow prevention limit index is reached, so as to solve the problem of electrolyte overflow or electrolyte shortage during the synchronous water injection process of a large number of batteries in the battery group.

6. A pressure balance control method for a liquid output port of a normal divergent pipe network, characterized in that: include: S01, obtaining large-scale battery cell water injection parameters of the lead-acid battery group, setting the electrolyte overflow prevention limit index of the lead-acid battery group, and obtaining the water injection pipe diameters of the main loop and branch loop of the water injection network and the water pressure of the main loop of the water injection network; S02, based on the battery cell water injection parameters, combined with the water injection pipe diameter and the water pressure of the main water injection circuit, a normal divergent pipe network architecture for automatic water injection of lead-acid battery groups is constructed to perform fully automatic synchronous water injection of a large number of batteries; S03, detecting the battery electrolyte level during the battery water filling process, and obtaining the battery electrolyte level detection data; detecting the flow rate of the water filling pipe at the end of the divergent pipe network during the battery water filling process, and obtaining the flow rate detection data of the water filling pipe at the end of the pipe network; S04, control and maintain the balance of water outlet pressure at the water injection port at the head end and the end of the divergent pipe network, so that the water injection process of multiple batteries is synchronized and balanced; and shut off the water injection pipeline when the electrolyte overflow prevention limit index is reached; Solve the problem of electrolyte overflow or electrolyte shortage during the simultaneous water injection process of a large number of batteries in a battery pack.

7. A pressure balance control method for a liquid output port of a normal divergent pipe network according to claim 6, characterized in that: S01 includes: S011, obtaining large-scale battery monomer water injection parameters of the lead-acid battery group; setting electrolyte overflow prevention limit indicators of the lead-acid battery group; S012, obtaining the diameters of the water injection pipes of the main water injection network loop and the branch water injection network loop and the water pressure of the main water injection network loop; The electrolyte overflow prevention limit indicators include: the electrolyte level reaching standard height indicator and the maximum overflow prevention liquid level indicator.

8. A pressure balance control method for a liquid output port of a normal divergent pipe network according to claim 6, characterized in that: S02 includes: S021, analyzing the number of batteries supplied by the water injection of the water injection network branch circuit according to the water injection parameters of the battery cells, combined with the water injection pipe diameters of the main circuit and the branch circuit of the water injection network and the water pressure of the main circuit; S022, based on the number of batteries supplied with water, a normal divergent pipe network architecture for automatic water injection of lead-acid battery groups is constructed; S023, through the automatic water injection normal divergence pipe network architecture, according to the lead-acid battery group architecture and the number of batteries, the lead-acid battery group composed of a large number of single batteries according to the actual power combination is fully automatically injected with water.

9. A pressure balance control method for a liquid output port of a normal divergent pipe network according to claim 6, characterized in that: S03 includes: S031, according to the electrolyte overflow prevention limit index, detecting the battery electrolyte level during the battery water filling process by means of a battery liquid level sensor, and obtaining battery electrolyte level detection data; the battery liquid level sensor is disposed in the battery electrolyte; S032, detecting the flow rate of the water injection pipe at the end of the divergent pipe network during the battery water injection process by using a divergent pipe network outlet flow meter to obtain the water injection pipe flow rate detection data at the end of the pipe network; the divergent pipe network outlet flow meter is set at the water outlet of the divergent pipe network outlet.

10. A pressure balance control method for a liquid output port of a normal divergent pipe network according to claim 6, characterized in that: S04 includes: S041, according to the battery electrolyte level detection data and the water injection pipe flow detection data at the end of the pipe network, control the invisible current limiter to keep the water outlet pressure of the water injection port at the head end and the end of the divergent pipe network balanced, so that the water injection process of multiple batteries is synchronized and balanced; S042, controls the water injection flow shut-off unit of the automatic water injection normal divergent pipe network architecture through the battery water injection monitoring center, and shuts off the water injection pipeline when the electrolyte overflow prevention limit index is reached during the synchronous water injection process of multiple batteries, thereby solving the problem of electrolyte overflow or electrolyte shortage during the synchronous water injection process of a large number of batteries in the battery pack.

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