CN216354637U - Special lead accumulator of high pressure express delivery - Google Patents

Abstract

The utility model discloses a lead storage battery special for high-voltage express delivery, which overcomes the problems of short service life, low specific energy and long charging time of lead-acid batteries produced by using a traditional process in the prior art, and comprises a battery pack formed by connecting any several batteries in parallel, wherein each battery comprises a storage battery shell and a storage battery end cover arranged on the storage battery shell, a battery cluster is arranged in each storage battery shell and comprises a plurality of single-cell batteries, each single-cell battery comprises a battery shell and a pole nail arranged on the battery shell, a pole plate is arranged in each battery shell and comprises a positive pole plate and a negative pole plate, and the single-cell batteries are connected and conducted in series through the pole nails penetrating through the battery shell walls. The service life is long, the charging time is short, and the quick charging requirement is met. The specific energy is large, the energy consumption of the battery of the electric vehicle is reduced, and the overall performance of the electric vehicle is improved.

Description

Special lead accumulator of high pressure express delivery

Technical Field

The utility model relates to the technical field of lead storage battery preparation, in particular to a high-voltage express special lead storage battery.

Background

Lead-acid batteries are one of the batteries with the widest range of use at present, the development of which has been over 150 years from the 19 th century to the present, and the application fields of which are very wide. In recent years, electric vehicles have been rapidly developed in China due to their superior mobility, lower storage space requirements, and superior price advantages. 90% of the electric transportation vehicles in cities such as express electric vehicles and the like use lead-acid batteries produced by the traditional process at present. The lead accumulator belongs to reversible DC power supply, and can convert chemical energy into electric energy and also convert electric energy into chemical energy. The current lead storage battery mainly comprises electrolyte, a tank cover and a polar group, wherein the electrolyte of the lead storage battery is sulfuric acid solution, the polar group mainly comprises a positive plate, a negative plate and a partition plate, and the partition plate mainly stores the electrolyte and serves as a gas channel for compounding oxygen to prevent active substances from falling off and prevent short circuit between the positive and negative electrodes. However, the lead-acid battery produced by the traditional process has the following defects: 1) the service life is short, and is only about 300 times; 2) the specific energy is small and is about 35 Wh/Kg; 3) the charging time is long and is more than 6 hours.

The patent office of china, 2020, 10.09.s, discloses a utility model entitled long-life sealed power lead storage battery, whose publication number is CN 211654978U. The utility model discloses an including battery body, battery body's left side fixedly connected with base. This long-life sealed power lead accumulator, seal between base and footstock and the battery body respectively through first sealing washer and second sealing washer, carry out secondary seal between base and first sealing washer and the battery body through the sealing strip, strengthen sealed between base and the battery body to the easy weeping, through the inseparable laminating between sealing strip and the battery body, upgrade sealed condition, the leakproofness has been strengthened, can effectually prevent the weeping, closely laminate through three heat conduction circle, the heat direction conducting strip that gives off the battery body outside, the heat on the conducting strip is bloied to the rethread forced air cooling fan, make the temperature reduction of battery body when dashing discharge, the protection battery is not overheated, promote battery life, this lead accumulator, sealed good and long-life. But the utility model has no obvious improvement on the specific energy and charging time of the battery.

Disclosure of Invention

The utility model aims to solve the problems of short service life, low specific energy and long charging time of a lead-acid battery produced by using a traditional process in the prior art, and provides a high-voltage express special lead storage battery which is long in service life, short in charging time and capable of meeting the demand of quick charging. The specific energy is large, the energy consumption of the battery of the electric vehicle is reduced, and the overall performance of the electric vehicle is improved.

In order to achieve the purpose, the utility model adopts the following technical scheme: include the group battery of constituteing by several arbitrary batteries are parallelly connected, the battery includes battery case and installs the battery end cover on battery case, the inside battery cluster that is equipped with of battery case, the battery cluster includes a plurality of cell, cell include battery case and install the utmost point post nail on battery case, install the polar plate in the battery case, the polar plate comprises a slice positive pole polar plate and a slice negative pole polar plate, accomplish series connection through the utmost point post nail that pierces through the battery case wall between the cell and switch on.

The battery shell is provided with the plurality of pole studs capable of conducting the two adjacent cells, the formed structure is that each cell consists of a positive pole plate and a negative pole plate, the cells and the cells are in a series structure formed by pre-embedded pole studs on the adjacent battery shell, and the pole studs are electrically conducted with the pole plates during assembly welding, so that the two adjacent cells are connected at the shortest distance. The battery pack can be formed by connecting any plurality of batteries in parallel, the whole voltage is completely determined by the voltage of a single battery, and the voltage can be arbitrarily made into multiple voltage of even number 2 as the output voltage. In the formula of electric power: p = UI, an increase in voltage will decrease current in use, equivalent to a longer discharge time and an increased range. The battery combination mode can add 2V, 4V or more at will on the basis of the traditional working voltage, thereby increasing the starting explosive force and the endurance mileage of the electric vehicle.

Preferably, the grid of the polar plate is in a rectangular structure. The polar plate is composed of a grid and active substances attached to the grid.

Preferably, the edge of the grid frame of the polar plate is provided with a polar post nail welding hole as a conductive polar lug. Corresponding holes are reserved on the periphery and correspondingly welded with the pole nails when the grid of the polar plate is manufactured.

Preferably, the conductive tabs are uniformly distributed on the outer edge of the rectangular frame of the grid, and can be distributed on four sides, three sides or two sides. The pole holes are distributed around, so that the charging and discharging current is uniformly distributed, and the large-current charging and discharging performance is improved.

Preferably, the number and the positions of the pole stud welding holes on the battery shell and the pole stud welding holes on the pole plate grid correspond to each other one by one. So that the post nail can penetrate through the battery shell through the post nail welding hole.

Preferably, a layer of AGM diaphragm paper is respectively arranged between the positive electrode plate and the battery shell and between the negative electrode plate and the battery shell. The active material on the grid is prevented from falling off, the polar plate is protected, the strength of the positive active material is enhanced, the negative electrode shrinkage is reduced, and the service life of the battery is prolonged.

Preferably, an AGM separator is further provided between the positive electrode plate and the negative electrode plate as a third electrode for storing an electrolyte. The AGM separator is an adsorption type glass fiber separator, so that the battery is tightly assembled, and the volume of the battery is reduced; prevent the pole plate from deforming, bending and falling off of the active material; the necessary amount of electrolyte is stored in a porous separator between the polar plates so as to ensure higher conductivity and the requirement of battery reaction; the migration and diffusion of substances harmful to the electrodes are prevented, the risk of short circuit of the storage battery caused by contact of positive and negative lead pastes due to paste falling of the polar plates in the use process of the storage battery is reduced, and the service life of the storage battery is prolonged.

Preferably, the thickness of the AGM membrane paper is 0.3mm-0.5 mm. Excessive thickness of AGM separator paper may affect battery performance.

Preferably, the battery case is made of an injection-molded polymer material. And determining that the single compartment does not have air leakage and the ionic connection in the electrolyte is cut off.

Therefore, the utility model has the following beneficial effects: 1. by readjusting the design of the overall performance of materials, structures and batteries, the service life is prolonged, the charging time is shortened, the specific energy is increased, the energy consumption caused by the weight of the battery of the electric vehicle is reduced, and the overall performance of the electric vehicle is improved; 2. the battery combination mode can add 2V, 4V or more at will on the basis of the existing traditional working voltage, thereby increasing the starting explosive force and the endurance mileage of the electric vehicle; 3. the requirements of the current industries of express delivery special, urban logistics and fast food delivery on quick charging of the battery of the electric vehicle and long service life of the battery are met; 4. the single-cell battery series connection mode is short in conductive path, internal ohmic resistance is obviously reduced, the pole nails are distributed around, so that charging and discharging currents are uniformly distributed, and high-current charging and discharging performance is improved.

Drawings

Fig. 1 is a cross-sectional view of a battery of the present invention;

fig. 2 is an enlarged schematic view of the battery pack of the present invention;

FIG. 3 is a schematic view of the positive side plate structure of the present invention;

FIG. 4 is a schematic structural view of a battery case according to the present invention;

fig. 5 is a schematic diagram of the construction of a grid of the present invention;

in the figure: 1. a battery case; 2. a battery end cap; 3. a battery case; 4. a pole stud; 5. a positive electrode plate; 6. welding a hole by a post nail; 7. AGM separator paper; 8. an AGM separator; 9. and a negative electrode plate.

Detailed Description

The utility model is described in further detail below with reference to the following detailed description and accompanying drawings:

this embodiment is a special lead accumulator of high-pressure express delivery, as shown in fig. 1, every battery includes battery case 1 and installs battery end cover 2 on battery case, the inside battery cluster that is equipped with of battery case, the battery cluster includes a plurality of cell, and the battery group enlargies the schematic diagram and is shown in fig. 2. The utility model relates to a battery pack formed by connecting any number of batteries in parallel.

The single-cell battery comprises a battery shell 3, the battery shell is made of injection molding high polymer materials, gas leakage among the single-cell batteries is ensured, and ion contact in electrolyte is cut off; the battery shell is internally provided with a polar plate, the polar plate consists of a positive polar plate and a negative polar plate, a layer of AGM diaphragm paper 7 is respectively arranged between the positive polar plate and the battery shell and between the negative polar plate and the battery shell, and an AGM separator 8 is also arranged between the positive polar plate 5 and the negative polar plate 9 and is used as a third pole for storing electrolyte. Taking the positive electrode side plate as an example, the structure is shown in fig. 3. When the whole single-lattice battery is assembled, firstly, a layer of 0.3mm AGM diaphragm paper is laid on a battery shell, then a positive electrode plate is pressed on the battery shell for welding, an AGM separator is arranged on the positive electrode plate, a negative electrode plate is arranged on the AGM separator, a layer of 0.3mm AGM diaphragm paper is laid on the negative electrode plate, and then the other half of the battery shell is covered on the battery shell to assemble a single-lattice battery whole.

During the manufacturing process of the battery shell, the pole nails 4 with the number corresponding to the pole nail welding holes 6 are embedded in the injection molding process, as shown in fig. 4. The single-cell batteries are connected in series and conducted through the pole nails penetrating through the walls of the battery shells, and the single-cell batteries can be randomly detached. The manufacturing shape of the plate grid of the polar plate is a rectangular structure, and welding holes for the polar post nail are designed at the edges of the frame of the plate grid of the positive and negative poles to serve as conductive polar lugs. The conductive tabs are uniformly distributed on the outer edge of the rectangular frame, and can be distributed on four sides, three sides or two sides, as shown in fig. 5, taking the positive electrode plate as an example, the pole nail welding holes are uniformly distributed on the four sides of the outer edge of the rectangular frame of the grid.

According to the utility model, the battery shell is provided with the plurality of pole nails capable of conducting the two adjacent cells, corresponding pole nail welding holes are reserved around the plate grid during manufacturing and are correspondingly welded with the pole nails to form the single-cell battery, each single cell consists of a positive pole plate and a negative pole plate, and the single cell are of a series structure of the embedded pole nails on the adjacent battery shell. The battery pack can be formed by connecting any number of single batteries in series, the whole voltage is completely determined by a single voltage, and the whole voltage can be arbitrarily made into multiple voltage of even number 2 as the output voltage. For example, a group of four battery packs can be used for two batteries on a vehicle, and then the rest two batteries are placed in fixed positions for charging, or the rest three batteries are charged, so that starting and running are not influenced. The battery pack only affects the endurance mileage. In the formula of electric power: p = UI, an increase in voltage will decrease current in use, equivalent to a longer discharge time and an increased range. The battery combination mode can add 2V, 4V or more at will on the basis of the traditional working voltage, thereby increasing the starting explosive force and the endurance mileage of the electric vehicle.

The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the utility model as set forth in the claims.

Claims (9)

1. The utility model provides a special lead accumulator of high-pressure express delivery, its characterized in that includes the group battery of constituteing by several arbitrary batteries are parallelly connected, the battery includes battery case and installs the battery end cover on battery case, the inside battery cluster that is equipped with of battery case, the battery cluster includes a plurality of cell, the cell include the battery casing and install the utmost point post nail on the battery casing, install the polar plate in the battery casing, the polar plate comprises a slice positive polar plate and a slice negative pole polar plate, accomplish series connection through the utmost point post nail that pierces through the battery casing wall and switch on between the cell.

2. The lead storage battery special for high-voltage express delivery of claim 1, wherein the grid of the polar plate is of a rectangular structure.

3. The special lead storage battery for high-voltage express delivery of claim 2, wherein the edge of a grid frame of the polar plate is designed with a polar nail welding hole as a conductive polar lug.

4. The lead storage battery special for high-voltage express delivery according to claim 3, wherein the conductive tabs are uniformly distributed on the outer edge of the rectangular frame of the grid, and can be distributed on four sides, three sides or two sides.

5. The special lead storage battery for high-voltage express delivery of claim 4, wherein the number and the positions of the pole stud welding holes on the battery shell correspond to those of the pole stud welding holes on the polar plate grid one by one.

6. The lead storage battery special for high-voltage express delivery according to any one of claims 1 to 5, wherein a layer of AGM diaphragm paper is respectively arranged between the positive electrode plate and the battery shell and between the negative electrode plate and the battery shell.

7. The lead storage battery special for high-voltage express delivery according to claim 6, wherein an AGM separator is further arranged between the positive electrode plate and the negative electrode plate to serve as a third electrode for storing electrolyte.

8. The lead storage battery special for high-voltage express delivery according to claim 6, wherein the thickness of the AGM membrane paper is 0.3mm-0.5 mm.

9. The lead storage battery special for high-voltage express delivery according to claim 1, wherein the battery shell is made of an injection-molded high polymer material.

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