CN218333862U

CN218333862U - Positive plate for self-balancing energy storage battery, single battery and self-balancing energy storage battery

Info

Publication number: CN218333862U
Application number: CN202222391720.8U
Authority: CN
Inventors: 杨滔
Original assignee: Chaowei Power Group Co Ltd
Current assignee: Chaowei Power Group Co Ltd
Priority date: 2022-09-05
Filing date: 2022-09-05
Publication date: 2023-01-17
Anticipated expiration: 2032-09-05

Abstract

The utility model relates to a from balanced for energy storage battery positive plate, battery cell and from balanced energy storage battery belongs to the lead acid battery field for the polar plate resistance of solving current lead acid battery's positive plate is higher, the relatively poor problem of electric conductive property. The positive plate for the self-balancing energy storage battery comprises a frame and a lug, wherein the frame comprises an upper frame, a lower frame, a left frame and a right frame; set up many horizontal vertical cross ribs in the frame of positive plate, the rib includes many first ribs along the horizontal distribution of utmost point face and many second ribs along the vertical distribution of utmost point face, and first rib sets up to the wave. The utility model discloses a from balanced energy storage positive plate for battery's resistance is low, and electric conductive property is good.

Description

Positive plate for self-balancing energy storage battery, single battery and self-balancing energy storage battery

Technical Field

The utility model relates to a lead acid battery field especially relates to a from balanced positive plate, battery cell and from balanced energy storage battery for energy storage battery.

Background

The ribs of the positive plate of the conventional lead storage battery for energy storage are mostly arranged into rectangles, so that the resistance of the positive plate is higher, and the conductivity is poorer; the voltage of the existing lead storage battery for energy storage is 2V, and the general use voltage needs to reach more than 24V, so that a plurality of batteries can be generally connected in series for use, and when a plurality of single batteries are connected in series for use, if one battery has local problems or short circuit, the whole battery group can be influenced; eventually affecting the normal operation of the equipment.

SUMMERY OF THE UTILITY MODEL

In view of the foregoing analysis, the utility model aims at providing a from balanced for energy storage battery positive plate, battery cell and from balanced energy storage battery for the polar plate resistance of solving current lead acid battery's positive plate is higher, the relatively poor problem of electric conductive property.

On one hand, the utility model provides a positive plate for a self-balancing energy storage battery, which comprises a frame and a lug, wherein the frame comprises an upper frame, a lower frame, a left frame and a right frame; the frame of positive plate sets up many anyhow crisscross ribs, and the rib includes many first ribs along utmost point face horizontal distribution and many second ribs along utmost point face longitudinal distribution, and first rib sets up to the wave.

Furthermore, the height difference between the highest point and the lowest point of the wavy first ribs is 3-4 mm.

Furthermore, the tabs of the positive plate comprise a first tab and a second tab, and the first tab and the second tab are symmetrically arranged on the upper frame along the length direction of the upper frame; the plane of the first lug and the second lug is parallel to the plate surface of the positive plate.

Further, the first tab and the second tab have the same size.

Furthermore, the resistance of the positive plate for the self-balancing energy storage battery is 1.4-1.85 m omega.

The utility model also provides a from balanced battery cell for the energy storage battery, including a plurality of foretell from balanced battery cell positive plates.

Further, the negative plate comprises a plurality of negative plates.

Furthermore, each negative plate comprises a frame and a tab, and the frame comprises an upper frame, a lower frame, a left frame and a right frame; the number of the pole lugs of each negative plate is 1, the pole lugs are called as unipolar lugs, the unipolar lugs are located in the middle of the upper frame of the negative plates, and the plane where the unipolar lugs are located is parallel to the plate surface of the negative plates.

Furthermore, the pole group of the single battery for the self-balancing energy storage battery is designed to be tightly assembled.

The utility model also provides a self-balancing energy storage battery, which comprises a plurality of module batteries, wherein each module battery comprises the single battery for the self-balancing energy storage battery; the plurality of module batteries are connected in parallel.

Compared with the prior art, the utility model discloses can realize one of following beneficial effect at least:

(1) The utility model provides a from first rib of balanced positive plate for energy storage battery sets up to the wave, so set up can accelerate electron conduction speed, reduces polar plate resistance, promotes polar plate electric conductive property.

(2) The utility model provides a from controlling both sides of being located frame on the positive plate of two utmost point ear symmetries of balanced positive plate for energy storage battery, whole polar plate face current distribution is even, reduces the potential loss, can reduce the thermal production of battery when heavy current charge-discharge, is favorable to battery high power work, prolongs the life of battery.

(3) The self-balancing energy storage battery provided by the utility model has the advantages that the plurality of module batteries are connected in parallel, when a single module battery has a problem, the use of the self-balancing energy storage battery is not influenced, and the high capacity is still kept; the current distribution is balanced and the reliability is increased.

(4) The utility model provides a from balanced energy storage battery's specific energy improves, and battery efficiency improves.

(5) The utility model provides a connect in parallel from balanced energy storage battery adopts a plurality of module batteries, consequently, every module battery's polar plate size reduces, can reduce because of the high too high serious sour layering phenomenon that leads to of polar plate.

The utility model discloses in, can also make up each other between the above-mentioned each technical scheme to realize more preferred combination scheme. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout the drawings.

Fig. 1 is a schematic structural diagram of a positive plate of a conventional energy storage battery;

fig. 2 is a schematic structural view of the positive plate for the self-balancing energy storage battery of the present invention;

fig. 3 is a schematic structural diagram of the self-balancing energy storage battery of the present invention.

Reference numerals:

1-shell, 2-module battery, 31-first pole ear, 32-second pole ear, 41-first rib, 42-second rib, 5-output terminal, 6-terminal protecting cover, 7-handle, 8-positive output copper bar and 9-negative output copper bar.

Detailed Description

The following detailed description of the preferred embodiments of the invention, which is to be read in connection with the accompanying drawings, forms a part of the invention, and together with the embodiments of the invention, serve to explain the principles of the invention and not to limit the scope of the invention.

As shown in fig. 1, which is a schematic structural diagram of a positive plate of an energy storage battery in the prior art, ribs of the positive plate of the energy storage battery are mostly rectangular, a plate resistance is 5.3m Ω, the plate resistance is high, and a conductive performance is poor; through long-term intensive research, the applicant improves the positive plate so as to reduce the resistance of the plate and improve the conductivity of the plate.

The utility model provides a positive plate for a self-balancing energy storage battery, which comprises a frame and a lug, wherein the frame comprises an upper frame, a lower frame, a left frame and a right frame; fig. 2 is a schematic structural diagram of the positive plate; the frame of the positive plate is internally provided with a plurality of ribs which are crossed transversely and vertically, the ribs comprise a plurality of first ribs 41 which are distributed transversely along the polar plate surface and a plurality of second ribs 42 which are distributed longitudinally along the polar plate surface, and the first ribs 41 are arranged in a wave shape.

Compared with the prior art, the utility model discloses a from first rib of balanced positive plate for energy storage battery sets up to the wave, so set up and to accelerate electron conduction speed, reduces polar plate resistance, promotes polar plate electric conductive property.

Specifically, in order to reduce the cost, the height difference between the highest point and the lowest point of the wavy first ribs 41 is 3-4 mm.

Specifically, the tabs of the positive plate include a first tab 31 and a second tab 32, and the first tab 31 and the second tab 32 are symmetrically arranged on the upper frame along the length direction of the upper frame; the first tab 31 and the second tab 32 are located on a plane parallel to the plate surface of the positive plate.

Specifically, in the positive electrode plate, the first tab 31 and the second tab 32 have the same size.

Specifically, the relationship between the distance d between the first tab 31 and the second tab 32 (d refers to the distance between the two nearest edges of the first tab 31 and the second tab 32, and hereinafter also refers to this distance) and the width w of the monopolar tab and the length L1 of the upper frame is as follows: l1 > d > w.

Specifically, the utility model discloses a resistance of positive plate for self-balancing energy storage battery is 1.4 ~ 1.85m omega, and the lower battery internal resistance of polar plate is lower, and discharge performance is better.

On the other hand, the utility model also provides a from balanced battery cell for energy storage battery, the aforesaid is from balanced battery cell for energy storage battery including a plurality of the above-mentioned positive plate, a plurality of baffles and a plurality of negative plate for balanced battery cell from the range upon range of setting in turn.

Specifically, each negative plate comprises a frame and a tab, and the frame comprises an upper frame, a lower frame, a left frame and a right frame; the number of the pole lugs of each negative plate is 1, the pole lugs are called as unipolar lugs, the unipolar lugs are located in the middle of the upper frame of the negative plates, and the plane where the unipolar lugs are located is parallel to the plate surface of the negative plates.

On the other hand, the utility model also provides a from balanced energy storage battery includes shell 1 and cavity, divide into a plurality of units in the cavity, be equipped with module battery 2 in every unit, a plurality of module batteries 2 are parallelly connected, and every module battery 2 includes a plurality of the above-mentioned monomer batteries for the self-balanced energy storage battery.

The existing energy storage battery mostly adopts a 2V1000Ah battery, compared with the prior art, the self-balancing energy storage battery provided by the utility model has the advantages that a plurality of module batteries are connected in parallel, when a single module battery has a problem, the use of the whole battery group is not influenced, and the higher capacity is still kept; the current distribution is balanced and the reliability is increased.

Specifically, the specification of the module battery 2 is 4V20Ah to 4V200Ah, for example, 4V 77Ah.

Specifically, the number of the module cells 2 is 2 to 20, for example, the number of the module cells 2 is 10.

Specifically, the parallel connection of the module cells 2 is a 1 × n or 2 × n structure.

Specifically, the size of the outer frame 1 is (490 to 515) mmX (290 to 315) mmX (180 to 200) mm. Preferably, the dimensions of the outer frame 1 are 506mm × 309mm × 190mm.

Specifically, the size of the module cell 2 is (145 to 155) mmx (95 to 105) mmx (160 to 180) mm. Preferably, the module cells 2 have dimensions of 153mm × 100mm × 170mm.

Specifically, the 10 module cells 2 may be connected in parallel in a 2 × 5 configuration.

Specifically, the weight of the module cell 2 is about 6.5 to 8.5kg, for example, the weight of the module cell 2 is 7.3kg.

Taking the specification of a module battery of 4V 77Ah, the weight of the module battery is about 7.3kg, and the number of the module batteries is 10 as an example, the specific energy of the self-balancing energy storage battery is 4V × 770Ah/73kg =42.1wh/kg. The weight of the conventional 2V1000Ah battery is about 73kg; the specific energy of the conventional battery is calculated by the following method: 2V × 1000Ah/73kg =27.3Wh/Kg; therefore, the specific energy of the self-balancing energy storage battery is improved by about 54 percent.

Specifically, each module battery 2 comprises 4 single batteries, the specification of each single battery is 2V 10-100 Ah, and after each 2 single batteries are connected in series, two groups of single batteries connected in series are connected in parallel.

Specifically, the module battery 2 comprises a battery case made of ABS resin, and a vertical exhaust groove is designed in the battery case, so that heat dissipation between batteries is facilitated.

Specifically, the pole group of the single battery is designed to be tightly assembled, because the conventional 2V1000Ah type battery has a large pole plate surface, the assembling pressure cannot be designed to be too large, the manufacturing difficulty is large due to the too large assembling pressure, and the battery acidification is influenced, so the battery performance is influenced; and the utility model discloses a single battery is little pole piece structure, and the face height is little, can design great assembly pressure, increases about 10kpa ~ 15kpa than conventional energy storage battery utmost point crowd pressure, and assembly pressure suitably increases and is favorable to promoting battery cycle life.

Specifically, the shell 1 of the self-balancing energy storage battery is made of aluminum alloy.

Specifically, the upper surface of the shell 1 of the self-balancing energy storage battery can be detached, and the module battery 2 is convenient to load or take out.

Specifically, all be provided with a plurality of exhaust holes on the face of shell 1, avoid inside atmospheric pressure too high and produce the potential safety hazard.

Specifically, a plurality of uniformly distributed support bars are arranged on the inner wall of the shell 1, and the arrangement of the support bars is favorable for heat dissipation of the battery.

Specifically, an output terminal mounting hole is formed in one side face of the housing 1, the output terminal mounting hole is made of rubber, and the output terminal mounting hole is fixed to one side face of the housing 1. When in use, the output terminal 5 is screwed.

Specifically, in order to protect the output terminal 5 from other metal contacts affecting the battery use; the self-equalizing energy storage cell also comprises a terminal shield 6. The terminal cover 6 is for covering the output terminals 5.

Specifically, two opposite side surfaces of the shell 1 are further provided with detachable handles 7, and after the installation is completed, the handles 7 can be taken down automatically, so that the space is saved.

Specifically, from balanced energy storage battery still includes positive output copper bar 8 and negative output copper bar 9, and the positive terminal of all module batteries is connected to the one end of positive output copper bar 8, and the other end of positive output copper bar 8 is connected with outside positive output terminal, and the negative terminal of all module batteries is connected to the one end of negative output copper bar 9, and another terminal and the outside negative output terminal of negative output copper bar 9 are in succession.

Compared with the prior art, the self-balancing energy storage battery provided by the utility model has the advantages that the plurality of module batteries are connected in parallel, when a single module battery has a problem, the use of the whole battery pack is not influenced, and the higher capacity is still kept; the current distribution is balanced and the reliability is increased.

The utility model provides a from balanced energy storage battery's specific energy improves, and battery efficiency improves.

The utility model provides a connect in parallel from balanced energy storage battery adopts a plurality of module batteries, consequently, every module battery's polar plate size reduces, can reduce because of the high too high serious sour stratification phenomenon that leads to of polar plate.

The utility model provides a from controlling both sides of being located frame on the positive plate of two utmost point ear symmetries of balanced positive plate for energy storage battery, whole polar plate face current distribution is even, reduces the potential loss, can reduce the thermal production of battery when heavy current charge-discharge, is favorable to battery high power work, prolongs the life of battery.

The utility model provides a from first rib of balanced positive plate for energy storage battery sets up to the wave, so set up and to accelerate electron conduction speed, reduces polar plate resistance, promotes polar plate electric conductive property.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.

Claims

1. The positive plate for the self-balancing energy storage battery is characterized by comprising a frame and tabs, wherein the frame comprises an upper frame, a lower frame, a left frame and a right frame; set up many horizontal vertical cross ribs in the frame of positive plate, the rib includes many first ribs (41) along the horizontal distribution of utmost point face and many second ribs (42) along the vertical distribution of utmost point face, first rib (41) set up to the wave.

2. The positive plate for a self-equalizing energy storage battery according to claim 1, characterized in that the height difference between the highest point and the lowest point of the wavy first ribs (41) is 3-4 mm.

3. The positive plate for a self-balancing energy storage battery according to claim 1, characterized in that the tabs of the positive plate comprise a first tab (31) and a second tab (32), and the first tab (31) and the second tab (32) are symmetrically arranged on the upper frame along the length direction of the upper frame; the plane of the first lug (31) and the second lug (32) is parallel to the plate surface of the positive plate.

4. Positive plate for a self-equalizing energy storage battery according to claim 3, characterized in that said first tab (31) and said second tab (32) are of the same size.

5. The positive plate for a self-balancing energy storage battery according to claim 4, wherein the resistance of the positive plate for a self-balancing energy storage battery is 1.4 to 1.85m Ω.

6. A cell for a self-balancing energy storage battery, comprising a plurality of positive plates for a self-balancing energy storage battery according to any one of claims 1 to 5.

7. The cell for a self-equalizing energy storage battery as defined in claim 6, further comprising a plurality of negative plates.

8. The cell for the self-balancing energy storage battery according to claim 7, wherein each of the negative plates comprises a frame and a tab, and the frame comprises an upper frame, a lower frame, a left frame and a right frame; the number of the pole lugs of each negative plate is 1, the pole lugs are called as unipolar lugs, the unipolar lugs are located in the middle of the upper frame of the negative plates, and the plane where the unipolar lugs are located is parallel to the plate surface of the negative plates.

9. The cell for a self-balancing energy storage cell according to claim 8, wherein the pole group of the cell is designed to be tightly fitted.

10. A self-balancing energy storage cell, characterized by comprising a plurality of module cells (2), said module cells (2) comprising a single cell for a self-balancing energy storage cell according to any one of claims 6 to 9; a plurality of the module cells (2) are connected in parallel.