CN210838004U

CN210838004U - Storage battery

Info

Publication number: CN210838004U
Application number: CN201922115492.XU
Authority: CN
Inventors: 阙奕鹏
Original assignee: Chaowei Power Group Co Ltd
Current assignee: Chaowei Power Group Co Ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-06-23
Anticipated expiration: 2029-11-29

Abstract

The utility model provides a storage battery, which comprises a battery shell, an end cover, a plurality of partition plates, a plurality of positive plates and a plurality of negative plates, wherein the end cover is sealed at the opening end of the battery shell, and the partition plates, the positive plates and the negative plates are arranged in a containing cavity in a staggered manner; the positive plate comprises a positive grid with a frame body net structure and a plurality of positive lugs arranged on the frame of the positive grid; the negative plate comprises a negative grid with a frame body net structure and a plurality of negative lugs which are respectively arranged on the frame of the negative grid; the storage battery is also provided with a positive terminal and a negative terminal, wherein the positive lug is electrically connected with the positive terminal, and the negative lug is electrically connected with the negative terminal. A plurality of positive lugs and negative lugs are correspondingly installed on the frames of the positive grid and the negative grid of the storage battery respectively, and the voltage distribution inside the positive plate and the negative plate is ensured to be even through a plurality of different lug conduction currents, so that the utilization rate of active substances at different positions inside the positive plate and the negative plate is greatly improved.

Description

Storage battery

Technical Field

The utility model relates to a power battery technical field specifically relates to a battery.

Background

With the continuous development of science and technology, petroleum resources are gradually deficient, the ecological environment is increasingly worsened, and novel batteries are produced. At present, high-energy nickel-cadmium batteries, nickel-metal hydride batteries, nickel-zinc batteries, maintenance-free lead-acid batteries, lead-cloth batteries, lithium ion batteries, lithium polymer batteries and other novel secondary batteries are favored in the market. The quantity of tools for riding instead of walk in China is further enlarged along with the preservation of automobiles, motorcycles, electric bicycles and the like, so that the demand of lead-acid storage battery products is continuously increased.

The main component in the lead-acid storage battery is a polar plate, and the grid is a main structure forming the polar plate, occupies 20-30% of the total mass of the lead-acid storage battery, and mainly plays a role in conducting current and supporting active substances. In the field of power battery application, because the lead-acid storage battery is in a high-rate discharge state in most of the using process, the lead-acid storage battery has high requirements on the distribution of current on the surface of a polar plate and the resistance of a grid, generally, the resistivity of the polar plate close to the periphery of a polar lug is smaller, the utilization rate of an active substance at the position is relatively higher, and the resistivity of the polar plate far away from the polar lug is opposite to the activity utilization rate. In order to ensure that the grid can have the capacity of passing large current, the resistivity of a plate is reduced by reducing the number of transverse ribs (or reducing the cross section area) in the grid and increasing the number of vertical ribs (or increasing the cross section area of the vertical ribs) so that the grid has the capacity of passing large current, however, the method can cause the combination capacity between the grid and active substances borne by the grid to be reduced, the voltage drop of the upper part and the lower part of the plate cannot be obviously improved, the utilization rate of the active substances borne on the plate is low, and the high-rate discharge performance of the lead-acid storage battery is influenced.

Therefore, a need exists for a battery that solves at least one of the problems described above.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a storage battery, the problem that active material utilization ratio is low on the polar plate among the prior art can be solved to this storage battery, provides a storage battery, through set up a plurality of utmost points ear in order to improve the voltage drop at the different positions of polar plate on the positive grid of the principal part and the negative grid of the positive plate that constitute this storage battery and negative plate, improves the utilization ratio of active material on the polar plate.

In order to achieve the above object, an embodiment of the present invention provides a battery, including: a battery case having an accommodating chamber and an opening at one end; an end cap covering the open end of the cell housing; the plurality of separators, the plurality of positive plates and the plurality of negative plates are arranged in the accommodating cavity; the positive plates and the negative plates are arranged in a staggered mode, and a partition plate is arranged between every two adjacent positive plates and negative plates; each positive plate comprises a positive grid with a frame body net structure and a plurality of positive lugs which are respectively arranged on the top frame and the bottom frame of the positive grid; each negative plate comprises a negative grid of a frame body net structure and a plurality of negative lugs which are respectively arranged on the top frame and the bottom frame of the negative grid; the storage battery is further provided with a positive terminal and a negative terminal, each positive lug is electrically connected with the positive terminal, and each negative lug is electrically connected with the negative terminal.

Specifically, the positive lugs are detachably mounted on the positive grid.

Specifically, the bottom of the battery shell is correspondingly provided with a plurality of first placing holes matched with the positions of positive lugs on the bottom frame of the positive grid, and when the positive plate is installed in the accommodating cavity, the positive lugs on the bottom frame of the positive grid can be embedded into the first placing holes to fix the positive lugs on the bottom frame of the positive grid.

Specifically, the bottom of the battery shell is paved with a positive electrode lead, and each positive electrode lug embedded into the first placing hole is electrically connected with the positive electrode terminal of the storage battery through the positive electrode lead.

Specifically, the negative electrode tabs are detachably mounted on the negative grid.

Specifically, a plurality of second placing holes matched with negative lugs on a bottom frame of the negative grid are correspondingly formed in the bottom of the battery shell, and when the negative plate is installed in the accommodating cavity, the negative lugs on the bottom frame of the negative grid can be embedded into the second placing holes to fix the negative lugs on the bottom frame of the negative grid.

Specifically, a negative electrode lead is laid at the bottom of the battery shell, and each negative electrode lug embedded into the second placing hole is electrically connected with the negative electrode terminal of the storage battery through the negative electrode lead.

Specifically, the end cover orientation has seted up the seal groove on the one side of holding the chamber, be provided with the sealing washer in the seal groove the end cover closing cap pass through during the open end the sealing washer is sealed hold the chamber.

Specifically, there are two positive terminals and two negative terminals respectively, be provided with a positive terminal and a negative terminal on the end cover, the bottom of battery case is provided with a positive terminal and a negative terminal.

Specifically, a positive tab mounted on the top frame of the positive grid is electrically connected with a positive terminal arranged on the end cover, and a negative tab mounted on the top frame of the negative grid is electrically connected with a negative terminal arranged on the end cover; the positive electrode lug mounted on the bottom frame of the positive grid is electrically connected with the positive electrode terminal arranged at the bottom of the battery shell, and the negative electrode lug mounted on the bottom frame of the negative grid is electrically connected with the negative electrode terminal arranged at the bottom of the battery shell.

The utility model provides a storage battery, install a plurality of positive lugs on the top frame and the bottom frame of the positive grid of the positive plate of storage battery, install a plurality of negative lugs on the top frame and the bottom frame of the negative grid of negative plate, guarantee when the storage battery is charged or discharges, can be through a plurality of lugs conduction current simultaneously, make the voltage distribution inside corresponding positive plate or negative plate more even unanimous; through installing a plurality of anodal ears on the top frame and the bottom frame at positive grid, the mode of installing a plurality of negative ears on the top frame and the bottom frame of negative grid has increased the conduction route of electric current on positive plate and the negative plate, under the circumstances that does not reduce the horizontal rib quantity of grid, does not increase vertical rib quantity, can play the effect of conduction current through a plurality of utmost point ears of installation, and can not influence the cohesion between the active material that the grid bore rather than.

The utility model provides a storage battery, through a plurality of anodal ears and the negative pole ear of installing respectively on the top frame and the bottom frame of positive grid and negative grid, provide a plurality of routes for the electric current conduction, through different utmost point ear conduction current, it is even to have ensured that the inside voltage distribution of positive plate and negative plate is even, has improved the voltage drop at the different positions of positive plate and negative plate to make the active material's of the inside different positions of positive plate and negative plate utilization ratio improve greatly, improved the high rate discharge performance of battery simultaneously.

Other features and advantages of embodiments of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention, but do not constitute a limitation of the embodiments of the invention. In the drawings:

fig. 1 is a schematic structural diagram of a storage battery provided according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a positive grid structure in a storage battery provided according to an embodiment of the present invention;

fig. 3 is a schematic view of another arrangement structure of the positive terminal and the negative terminal of the storage battery according to the embodiment of the present invention;

fig. 4 is a schematic diagram of a negative grid structure in a storage battery according to an embodiment of the present invention.

Description of the reference numerals

1 Battery case 2 end caps

3 separator 4 positive plate

5 negative electrode plate 8 positive electrode terminal

9 negative terminal 41 positive grid

42 positive lug 51 negative grid

52 negative electrode tab

Detailed Description

The following describes in detail embodiments of the present invention with reference to the accompanying drawings. It is to be understood that the description herein is only intended to illustrate and explain embodiments of the present invention, and is not intended to limit embodiments of the present invention.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, top, bottom" and "upper" are generally used with respect to the orientation shown in the drawings or the positional relationship of the components with respect to each other in the vertical, vertical or gravitational direction.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The utility model provides a storage battery, figure 1 is the battery structure schematic diagram, and figure 2 is the structure schematic diagram of positive grid, and figure 4 is the structure schematic diagram of negative grid, as shown in figure 1, figure 2 and figure 4, the battery includes: a battery case 1 having an accommodating chamber and one open end; an end cap 2 covering the open end of the battery case 1; and a plurality of separators 3, a plurality of positive plates 4 and a plurality of negative plates 5 mounted in the accommodation chamber; the positive plates 4 and the negative plates 5 are arranged in a staggered mode, and a separator 3 is arranged between every two adjacent positive plates 4 and negative plates 5; each positive plate 4 comprises a positive grid 41 with a frame net structure and a plurality of positive lugs 42 respectively arranged on the top frame and the bottom frame of the positive grid 41; each negative plate 5 comprises a negative grid 51 of a frame net structure and a plurality of negative lugs 52 respectively arranged on the top frame and the bottom frame of the negative grid 51; the storage battery is further provided with a positive terminal 8 and a negative terminal 9, each positive tab 42 is electrically connected with the positive terminal 8, and each negative tab 52 is electrically connected with the negative terminal 9.

The utility model provides a storage battery, through installing a plurality of anodal ears 42 on the top frame and the bottom frame of positive grid 41, install a plurality of negative pole ears 52 on the top frame and the bottom frame of negative plate grid 51, for the electric current conduction provides many routes, through different utmost point ear conduction current, make the inside voltage distribution of positive plate 4 and negative plate 5 even, the inhomogeneous problem of the inside voltage distribution of polar plate has been improved, through different utmost point ear conduction current, the active material's of the inside different positions of positive plate 4 and negative plate 5 utilization ratio obtains improving.

In one embodiment, as shown in fig. 2, two positive lugs 42 are respectively installed on the top frame and the bottom frame of the positive grid 41, so that when the storage battery is charged or discharged, current is conducted through the four positive lugs 42 on the positive grid 41, which is equivalent to conducting current through four different paths, the voltage distribution inside the positive plate 4 is more uniform due to the current conduction of the different paths, the voltage drop at different positions inside the positive plate 4 is improved, the potential distribution on the surface of the positive grid 41 is more uniform, the resistivity of the grid is smaller in the process of conducting current, and the storage battery is favorable for large-current discharge; the current is conducted through a plurality of different paths, so that the active substances in the positive plate 4 can be better utilized, and the discharge performance of the storage battery is improved.

In the process of assembling the positive plates 4 during the assembly of the storage battery, the situation that the positive tab 42 is damaged may occur, for example, the positive tab 42 is broken, at this time, the assembly personnel can replace a new positive plate 4 for the assembly of the storage battery, and the damaged positive plate 4 of the positive tab 42 usually becomes waste, which causes waste of resources, and in order to avoid waste, specifically, a plurality of positive tabs 42 are detachably mounted on the positive grid 41. Positive ear 42 detachable connects on the top frame and the bottom frame of positive grid 41, makes things convenient for assembly personnel quick replacement new positive ear 42 under the condition that positive ear 42 damaged, avoids the wasting of resources. In order to facilitate the connection between the positive tab 42 and the positive grid 41, the positive tab 42 and the positive grid 41 can be connected quickly by means of threaded connection and plug connection.

In order to stably fix the positive lugs 42 on the bottom frame of the positive grid 41 at the bottom of the battery case 1 and ensure that the positive lugs 42 fixed at the bottom of the battery case 1 stably conduct current, specifically, the bottom of the battery case 1 is correspondingly provided with a plurality of first placing holes matched with the positions of the positive lugs 42 on the bottom frame of the positive grid 41, and when the positive plate 4 is installed in the accommodating cavity, the positive lugs 42 on the bottom frame of the positive grid 41 can be inserted into the first placing holes to fix the positive lugs 42 on the bottom frame of the positive grid 41. The positive tab 42 is embedded into the first placing hole, and the position of the positive tab 42 is fixed, so that the positive tab 42 can stably conduct current.

In order to make the current conducted by the positive lugs 42 mounted on the bottom frame of the positive grid 41 be intensively conducted to the positive terminal 8 of the battery, specifically, a positive lead is laid on the bottom of the battery case 1, and each positive lug 42 embedded in the first placing hole is electrically connected with the positive terminal 8 of the battery through the positive lead.

In one embodiment, a plurality of first placing holes are formed in the bottom of the battery case 1, elastic contact pieces are installed at the bottom of the first placing holes, when the positive plates 4 are installed in the accommodating cavity of the battery case 1, the positive lugs 42 on the bottom frame of the positive plate grid 41 can be inserted into the first placing holes, meanwhile, the elastic contact pieces installed in the first placing holes are compressed, the elastic contact pieces are tightly contacted with the positive lugs 42 under the action of elastic restoring force of the elastic contact pieces, each elastic contact piece is connected with the positive terminal 8 of the storage battery through a positive lead, thus, the connection between the positive lugs 42 and the positive terminal 8 of the storage battery is facilitated through the elastic contact pieces and the positive lead, in case that some positive plates 4 in the storage battery are damaged, the damaged positive plates 4 are pulled out from the accommodating cavity, and the corresponding positive lugs 42 can be quickly disconnected from the positive terminal 8 of the storage battery, and then, a new positive plate 4 is arranged in the accommodating cavity, the positive lug 42 is embedded into the first accommodating hole to be contacted with the elastic contact piece, and the positive lug 42 is electrically communicated with the positive terminal 8 of the storage battery, so that the storage battery is convenient and quick. The positive lugs 42 on the top frame of the positive grid 41 of the positive plates 4 can be electrically connected with the positive terminal 8 on the end cover 2 after being connected in parallel through positive leads.

In order to prevent the negative electrode tab 52 from being damaged accidentally and the whole negative electrode plate 5 from being discarded, a plurality of negative electrode tabs 52 are detachably mounted on the negative grid 51. Negative pole ear 52 can be dismantled with negative plate bars 51 and be connected, even negative pole ear 52 damages, also can reinstall new negative pole ear 52 in order save material on negative plate bars 51's frame, and negative pole ear 52 is connected with negative plate bars 51 accessible threaded connection, plug connection's the quick connection of mode, convenient change, avoid unnecessary extravagant.

In order to ensure stable conduction of current, specifically, the bottom of the battery case 1 is correspondingly provided with a plurality of second placing holes matched with the negative lugs 52 on the bottom frame of the negative grid 51, when the negative plate 5 is installed in the accommodating cavity, the negative lugs 52 on the bottom frame of the negative grid 51 can be embedded into the second placing holes to fix the negative lugs 52 on the bottom frame of the negative grid 51, and the negative lugs 52 are embedded and fixed into the second placing holes, so that stable conduction of current is facilitated.

In order to make the current conducted by the negative tab 52 mounted on the bottom frame of the negative grid 51 be collected to the negative terminal 9 of the battery, specifically, a negative lead is laid on the bottom of the battery case 1, and each negative tab 52 embedded in the second placing hole is electrically connected to the negative terminal 9 of the battery through the negative lead. The negative electrode lugs 52 on the top frame of the negative grid 51 of the plurality of negative electrode plates 5 can be connected in parallel with each other through a negative electrode lead and then connected with the negative electrode terminal 9 on the end cover 2.

Positive plate 4 and negative plate 5 in the battery need dry operational environment, in order to create good operational environment for positive plate 4 and negative plate 5, specifically, 2 orientations of end cover have seted up the seal groove on the one side of holding the chamber, be provided with the sealing washer in the seal groove 2 closing cap of end cover passes through during the open end the sealing washer is sealed hold the chamber.

Specifically, there are two positive terminals 8 and two negative terminals 9, respectively, one positive terminal 8 and one negative terminal 9 are disposed on the end cap 2, and one positive terminal 8 and one negative terminal 9 are disposed at the bottom of the battery case 1.

Specifically, the positive tab 42 mounted on the top frame of the positive grid 41 is electrically connected with the positive terminal 8 disposed on the end cover 2, and the negative tab 52 mounted on the top frame of the negative grid 51 is electrically connected with the negative terminal 9 disposed on the end cover 2; the positive tab 42 mounted on the bottom frame of the positive grid 41 is electrically connected to the positive terminal 8 disposed at the bottom of the battery case 1, and the negative tab 52 mounted on the bottom frame of the negative grid 51 is electrically connected to the negative terminal 9 disposed at the bottom of the battery case 1.

In one embodiment, as shown in fig. 3, a positive terminal 8 and a negative terminal 9 are disposed at the bottom of the battery case 1, positive lugs 42 mounted on the bottom frame of the positive plates 4 in the accommodating cavity are connected in parallel with each other by lead-liquid cast welding, negative lugs 52 mounted on the bottom frame of the negative plates 5 in the accommodating cavity are connected in parallel with each other by lead-liquid cast welding, when the positive lugs 42 on the bottom frame of the positive plates 4 are connected in parallel with each other by cast welding and the negative lugs 52 on the bottom frame of the negative plates 5 are connected in parallel with each other by cast welding, the positive lugs 42 on the bottom frame of the positive plate 41 are electrically connected with the positive terminal 8 at the bottom of the battery case 1, the negative lugs 52 on the bottom frame of the negative plate 51 are electrically connected with the negative terminal 9 at the bottom of the battery case 1, the positive lugs 42 on the top frame of the positive plates 41 of the positive plates 4 are connected in parallel with the positive terminal 8 on the end cap 2 by lead-, negative pole ear 52 on the frame of negative plate bars 51 top of a plurality of negative plates 5 adopts the parallelly connected back of plumbous liquid cast joint's mode and negative terminal 9 electric connection on the end cover 2, fills for the battery like this, discharges and provides more electrically conductive returning, does benefit to the inside active material of activation positive plate 4 and negative plate 5, enough solves the problem that the active material utilization ratio on the polar plate is low among the prior art.

The utility model provides a storage battery, install a plurality of anodal ears 42 on the top frame and the bottom frame of the positive grid 41 of the positive plate 4 of storage battery, install a plurality of negative pole ears 52 on the top frame and the bottom frame of the negative plate 51 of negative plate 5, ensure that the storage battery can be through a plurality of utmost points ear conduction current simultaneously when charging or discharging, make the voltage distribution inside corresponding positive plate 4 or negative plate 5 more even unanimous; through installing a plurality of positive lugs 42 on the top frame and the bottom frame of positive grid 41, install a plurality of negative lugs 52's mode on the top frame and the bottom frame of negative grid 51, increased the conduction route of electric current on positive plate 4 and the negative plate 5, under the circumstances that does not reduce the horizontal rib quantity of grid, does not increase vertical rib quantity, can play the effect of conduction electric current through a plurality of lugs of installation, and can not influence the cohesion between the active material that the grid bore rather than.

The utility model provides a storage battery, through a plurality of anodal ears 42 and the negative pole ear 52 of installing respectively on the top frame of positive grid 41 and negative grid 51 and bottom frame, provide a plurality of routes for the electric current conduction, through different utmost point ear conduction current, it is even to have ensured that the inside voltage distribution of positive plate 4 and negative plate 5, the voltage drop at the different positions of positive plate 4 and negative plate 5 has been improved, thereby make the active material's of the inside different positions of positive plate 4 and negative plate 5 utilization ratio improve greatly, the high multiplying power discharge performance of battery has been improved simultaneously.

The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features.

In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.

Claims

1. A battery, characterized in that the battery comprises: a battery case (1) having an accommodating chamber and one open end; an end cap (2) for capping the open end of the battery case (1); and a plurality of separators (3), a plurality of positive plates (4) and a plurality of negative plates (5) mounted in the accommodating chamber;

the positive plates (4) and the negative plates (5) are arranged in a staggered manner, and a partition plate (3) is arranged between every two adjacent positive plates (4) and negative plates (5); each positive plate (4) comprises a positive grid (41) with a frame net structure and a plurality of positive lugs (42) which are respectively arranged on the top frame and the bottom frame of the positive grid (41); each negative plate (5) comprises a negative grid (51) with a frame net structure and a plurality of negative lugs (52) which are respectively arranged on the top frame and the bottom frame of the negative grid (51);

the storage battery is further provided with a positive terminal (8) and a negative terminal (9), each positive lug (42) is electrically connected with the positive terminal (8), and each negative lug (52) is electrically connected with the negative terminal (9).

2. The accumulator according to claim 1, characterized in that a plurality of said positive lugs (42) are removably mounted on said positive grid (41).

3. The storage battery according to claim 2, wherein the bottom of the battery case (1) is correspondingly provided with a plurality of first placing holes matched with the positions of the positive lugs (42) on the bottom frame of the positive grid (41), and when the positive plate (4) is installed in the accommodating cavity, the positive lugs (42) on the bottom frame of the positive grid (41) can be inserted into the first placing holes to fix the positive lugs (42) on the bottom frame of the positive grid (41).

4. The accumulator according to claim 3, characterized in that the bottom of the battery shell (1) is laid with a positive lead, and each positive lug (42) embedded in the first placing hole is electrically connected with the positive terminal (8) of the accumulator through the positive lead.

5. The accumulator according to claim 1, characterized in that a plurality of said negative tabs (52) are removably mounted on said negative grid (51).

6. The storage battery according to claim 5, characterized in that the bottom of the battery shell (1) is correspondingly provided with a plurality of second placing holes matched with the negative lugs (52) on the bottom frame of the negative grid (51), and when the negative plate (5) is installed in the accommodating cavity, the negative lugs (52) on the bottom frame of the negative grid (51) can be inserted into the second placing holes to fix the negative lugs (52) on the bottom frame of the negative grid (51).

7. The accumulator according to claim 6, characterized in that the bottom of the cell shell (1) is laid with a negative lead, and each negative lug (52) inserted into the second placing hole is electrically connected with the negative terminal (9) of the accumulator through the negative lead.

8. The storage battery according to claim 1, characterized in that a sealing groove is formed on one surface of the end cover (2) facing the accommodating cavity, a sealing ring is arranged in the sealing groove, and the accommodating cavity is sealed by the sealing ring when the end cover (2) covers the opening end.

9. The accumulator according to claim 1, characterized in that there are two of said positive terminals (8) and said negative terminals (9), respectively, said end cap (2) being provided with one positive terminal (8) and one negative terminal (9), said bottom of the battery casing (1) being provided with one positive terminal (8) and one negative terminal (9).

10. The accumulator according to claim 9, characterized in that the positive tab (42) mounted on the top rim of the positive grid (41) is electrically connected to the positive terminal (8) provided on the end cap (2), and the negative tab (52) mounted on the top rim of the negative grid (51) is electrically connected to the negative terminal (9) provided on the end cap (2); the positive electrode lug (42) mounted on the bottom frame of the positive grid (41) is electrically connected with the positive electrode terminal (8) arranged at the bottom of the battery shell (1), and the negative electrode lug (52) mounted on the bottom frame of the negative grid (51) is electrically connected with the negative electrode terminal (9) arranged at the bottom of the battery shell (1).