CN112635863B

CN112635863B - Capacity grading cabinet for charging and discharging battery

Info

Publication number: CN112635863B
Application number: CN202011499379.7A
Authority: CN
Inventors: 巩庆青; 杨光华; 张照云; 亓立财
Original assignee: Shandong Zhengneng Battery Co Ltd
Current assignee: Shandong Zhengneng Battery Co Ltd
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-10-22
Anticipated expiration: 2040-12-17
Also published as: CN112635863A

Abstract

The invention provides a capacity grading cabinet for charging and discharging a battery, which comprises a cabinet body, clamping components, a heat dissipation component, a control panel, contact components and a cabinet door, wherein battery ports which are in one-to-one correspondence with the clamping components are arranged on the cabinet door, each clamping component comprises a battery tool, a supporting plate, a movable clamping plate and a telescopic mechanism, two pole pieces are arranged inside the battery tools, one contact component is arranged on the rear side of each clamping component in the same row, each contact component comprises a mounting plate, a spring contact is arranged on each mounting plate, the front end of each spring contact is movably connected with the corresponding pole piece, square holes matched with square columns on a connecting plate located inside the cabinet body are arranged on two sides of each mounting plate, and a water cooling pipe and a mother pipe are arranged on the inner side of the cabinet door. According to the invention, the contact assembly and the clamping assembly are movably connected, so that the rotation flexibility of the cabinet door is improved, and the problem of poor contact caused by frequent plugging and unplugging of batteries is avoided; the space utilization of the internal structure of the whole cabinet body is high, the maintenance is convenient, and the heat dissipation performance is good.

Description

Capacity grading cabinet for charging and discharging battery

Technical Field

The invention belongs to the technical field of battery production equipment, and particularly relates to a battery charging and discharging capacity grading cabinet.

Background

In recent years, batteries are widely applied to various fields of electronic products and the like with excellent performances of high energy density, high voltage, high cycle, high safety, environmental protection and the like, after the batteries are manufactured, in order to verify the quality and performance of the product batteries and further dredge the transmission path of ions between a positive electrode and a negative electrode, improve the cycle performance of the batteries in the later use process and ensure the safety performance of the products after delivery, the batteries need to be charged and discharged for several times before delivery, the process is called capacity grading, and the capacity grading and the performance screening grading are simply understood. The capacity grading of the battery is completed by a chemical composition and capacity grading cabinet (since the basic principles of chemical composition and capacity grading are the same, the chemical composition and capacity grading functions are integrated in the same cabinet and are called as the chemical composition and capacity grading cabinet), and the function of differentiating into the capacity grading cabinet is actually the same as a charger, but the capacity grading cabinet can be used for charging and discharging a large number of batteries simultaneously.

The existing capacity grading cabinet comprises an electrical part and a mechanical part, wherein the electrical part comprises a circuit board, an electric wire, a control circuit, a detection circuit, a charging and discharging circuit and the like, and the mechanical part comprises a cabinet body, a clamping assembly, a contact assembly, a heat dissipation assembly and the like. Because most cabinets have no cabinet door, the clamping assemblies and the contact assemblies are basically arranged on the front side panel of the cabinet, and a large number of contact assemblies and clamping assemblies need to be dismounted during maintenance work, so that the maintenance workload is increased; for some structures with cabinet doors, because the contact assemblies need to be connected with the circuit board, and in order to ensure the electrical connection capacity, the distribution of electric wires is very dense, which is not favorable for the flexible rotation of the cabinet doors and causes certain difficulty for maintenance; meanwhile, the clamping device and the contact assembly basically adopt a wired mode to enable the pole of the battery to be electrically connected with the electric part, so that the problem of poor contact caused by frequent plugging and unplugging of the battery is very easy to occur, the workload is increased, the effective service cycle of the equipment is short, and the production efficiency is influenced. Moreover, the clamping assembly of the capacity grading cabinet is simple in structure, basically only batteries of one specification can be used, different capacity grading cabinets are required to be added for forming and grading the capacity for batteries of different sequences, the comprehensive utilization rate of the capacity grading cabinets is low, and the cost is high; secondly, the heat dissipation capability of the grading cabinet is poor, which affects the reliability of the detection result on one hand, and on the other hand, is not beneficial to ensuring that each element can reach the design life to the maximum extent.

Disclosure of Invention

Aiming at the technical problems of the grading cabinet, the invention provides the grading cabinet which has the advantages of reasonable design, strong connecting capability, high detection reliability, long service life, high comprehensive utilization rate and contribution to improving the production efficiency.

In order to achieve the above purpose, the technical scheme adopted by the invention is that the battery charging and discharging capacity-dividing cabinet provided by the invention comprises a cabinet body, wherein a plurality of clamping assemblies and heat dissipation assemblies are arranged on the cabinet body, the clamping assemblies are distributed in a rectangular array, a control panel is arranged on one side of the cabinet body, a contact assembly is arranged inside the cabinet body and connected with the clamping assemblies, a cabinet door is rotatably arranged on the front side of the cabinet body, a plurality of battery ports which are in one-to-one correspondence with the clamping assemblies are arranged on the cabinet door, each clamping assembly comprises a battery fixture arranged on the inner side of the cabinet door and a supporting plate arranged on the outer side of the cabinet door, a movable clamping plate is arranged on the front side of the supporting plate, a telescopic mechanism is arranged between the rear side of the movable clamping plate and the front end face of the supporting plate, the battery fixture is of a frame structure, and a bottom plate is arranged at the bottom of the battery fixture, the top surface, the left surface and the right surface of the battery tool are all provided with metal nets, two pole pieces are arranged inside the battery tool, the cross sections of the pole pieces are L-shaped, one ends of the pole pieces extend out of the back surface of the battery tool and extend towards the inside of the cabinet body, the rear end of the battery tool is provided with two contact grooves, pole piece holes for passing the pole pieces are arranged in the contact grooves, the rear side of the clamping assembly in the same row is provided with a contact assembly, the contact assembly comprises an installation plate, the installation plate is provided with a plurality of through holes, the through holes comprise contact connection holes, spring contacts are arranged in the contact connection holes, the front ends of the spring contacts are movably connected with the pole pieces, the top and the bottom of the installation plate are respectively provided with insertion grooves and insertion strips which are consistent with the length direction of the installation plate, and the two sides of the installation plate are respectively provided with a plurality of pairs of square holes, the cabinet body is provided with the connecting plate in its inside and the position that is close to the mounting panel, be provided with on the connecting plate with square hole complex square column, the inboard of cabinet door is provided with the water-cooled tube with every row of centre gripping subassembly interval distribution, the public female pipe in bottom of water-cooled tube, the both ends of female pipe are provided with the end cap.

Preferably, the two pole pieces are arranged in the battery tool side by side and close to the lower left corner of the rear end face of the battery tool, the height of the pole pieces is 1/2-3/4 of the height of the battery tool, and the width of the pole pieces is 1/3 of the battery tool.

Preferably, the spring contact comprises an electric pole electrically connected with a circuit board arranged in the cabinet body, the electric pole is in threaded connection with the contact connecting hole, a contact spring is arranged at the front end of the electric pole, a contact ball is arranged at the front end of the contact spring, and the diameter of the contact ball is smaller than the width of the contact groove.

Preferably, the telescopic mechanism comprises an extension spring, the rear end of the extension spring is connected with a spring groove formed in the end part of the supporting plate, a rotary joint is fixedly arranged at the front end of the extension spring, and an adjusting rod in threaded connection with the movable clamping plate is arranged at the front end of the rotary joint.

Preferably, the movable clamping plate comprises a first vertical part, a first horizontal part, a second vertical part and a second horizontal part which are sequentially connected, a guide strip is arranged on the bottom surface of the first horizontal part, and the guide strip is movably matched with a guide groove formed in the supporting surface of the supporting plate.

Preferably, the through hole further comprises a horizontal hole and a vertical hole which are located on the periphery of the contact connecting hole, the top of the mounting plate is provided with two U-shaped structure holes which are symmetrically distributed about the insertion groove, and the bottom of the mounting plate is provided with two U-shaped structure holes which are symmetrically distributed about the insertion strip.

Compared with the prior art, the invention has the advantages and positive effects that:

1. according to the capacity grading cabinet for charging and discharging the battery, the contact assembly is movably connected with the clamping assembly, so that the flexibility of rotation of the cabinet door is improved, and the problem of poor contact caused by frequent plugging and unplugging of the battery is solved; meanwhile, all the contact assemblies are independent of the cabinet door and the battery tool and are arranged inside the cabinet body, the space utilization rate of the internal structure of the cabinet body is greatly improved, the cabinet is convenient to overhaul, the heat dissipation performance is good, the design is reasonable, and the cabinet is suitable for large-scale popularization.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

FIG. 1 is an isometric view of a battery charging and discharging capacity grading cabinet provided by an embodiment;

fig. 2 is a rear view of a battery charging and discharging capacity grading cabinet (without a cabinet body) provided by the embodiment;

FIG. 3 is an isometric view of a clamp assembly and contact assembly provided by an embodiment;

figure 4 is a side view of a clamping assembly and contact assembly provided by an embodiment;

in the above figures;

1. a cabinet body;

2. a clamping assembly; 21. a support plate; 22. a movable splint; 221. a first vertical portion; 222. a first horizontal portion; 223. a second vertical portion; 224. a second horizontal portion; 23. a telescoping mechanism; 231. an extension spring; 232. a rotary joint; 233. adjusting a rod; 24. a battery tool; 241. a base plate; 242. a metal mesh; 243. pole pieces; 244. a contact groove;

3. a heat dissipating component; 31. a water-cooled tube; 32. a main pipe; 33. a plug;

4. a control panel;

5. a contact assembly; 51. mounting a plate; 52. a through hole; 521. a contact connecting hole; 522. a horizontal hole; 523. a vertical hole; 524. a U-shaped structural hole; 53. a spring contact; 531. connecting a power post; 532. contacting the ball; 54. a square hole; 55. inserting grooves; 56. inserting strips;

6. a cabinet door; 61. and a battery port.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" used herein refer to the same directions as the drawings, and do not limit the structure.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.

In an embodiment, as shown in fig. 1, fig. 2, fig. 3, and fig. 4, the battery charging and discharging capacity grading cabinet provided by the invention includes a cabinet body 1, wherein the cabinet body 1 is provided with a plurality of clamping assemblies 2 and heat dissipation assemblies 3, the plurality of clamping assemblies 2 are distributed in a rectangular array, one side of the cabinet body 1 is provided with a control panel 4, a contact assembly 5 is arranged inside the cabinet body 1, and the contact assembly 5 is connected with the clamping assemblies 2. Wherein, the cabinet body 1, the control panel 4, the air cooling part of the heat dissipation assembly and the detection circuit inside the cabinet body are the prior mature technologies, and the present embodiment is not described herein again. On the basis, the invention mainly provides improvement on the structures of the clamping component 2 and the contact component 5 and the connection mode of the clamping component and the contact component, so as to greatly improve the utilization rate of the whole equipment.

Specifically, the cabinet door 6 is rotatably arranged at the front side of the cabinet body 1, a plurality of battery openings 61 corresponding to the clamping assemblies 2 one by one are arranged on the cabinet door 6, each clamping assembly 2 comprises a battery fixture 24 arranged at the inner side of the cabinet door and a supporting plate 21 arranged at the outer side of the cabinet door, a movable clamping plate 22 is arranged at the front side of the supporting plate 21, a telescopic mechanism 23 is arranged between the rear side of the movable clamping plate 22 and the front end surface of the supporting plate 21, the battery fixture 24 is of a frame structure, a bottom plate 241 is arranged at the bottom of the battery fixture 24, metal nets 242 are arranged on the top surface, the left surface and the right surface of the battery fixture 24, two pole pieces 243 are arranged inside the battery fixture 24, the cross section of each pole piece 243 is in an L shape, one end of each pole piece 243 extends out from the rear surface of the battery fixture 24 and extends towards the inside of the cabinet body, two contact grooves 244 are arranged at the rear end of the battery fixture 24, pole piece holes for passing through the pole pieces are arranged in the contact grooves 244, the rear side of the clamping component 2 in the same row is provided with a contact component 5, the contact component 5 comprises a mounting plate 51, the mounting plate 51 is provided with a plurality of through holes 52, the through holes 52 comprise contact connecting holes 521, spring contacts 53 are arranged in the contact connecting holes 521, the front ends of the spring contacts 53 are movably connected with a pole piece 243, the top and the bottom of the mounting plate 51 are respectively provided with a plugging groove 55 and a plugging strip 56 which are consistent with the length direction of the mounting plate, the two sides of the mounting plate 51 are respectively provided with a plurality of pairs of square holes 54, the cabinet body 51 is provided with a connecting plate (not shown in the figure) in the position close to the mounting plate, the connecting plate is provided with square columns matched with the square holes, the inner side of the cabinet door 1 is provided with water cooling pipes 31 which are distributed at intervals with each row of clamping components, the bottom of each water cooling pipe 31 shares a female pipe 32, and two ends of the female pipe are provided with plugs 33.

In this device, cabinet door 6 can be completely independent of contact subassembly 5 as the main male portion of battery, has effectively improved rationality and the space utilization that the electric wire that contact subassembly 5 needs to be connected distributes at the internal portion of cabinet, shortens with the interconnecting link of the internal portion's of cabinet circuit distribution like contact subassembly 5, and based on the form of piecing together of contact subassembly 5 adoption about adjacent moreover for whole contact subassembly 5 obtains higher assembly nature, easy access and installation. Further, the design shape and area of the pole piece 243 in the same battery tool can be in contact connection with a plurality of batteries in different sequences and specifications, and the movable clamping plate 22 clamps the batteries, so that a preparation state for detection is achieved. The rear end of one battery frock 24 corresponds two spring contact 53, including anodal spring contact and negative pole spring contact, through pressing cabinet door 6 to the contact subassembly, the pole piece 243 of battery frock 24 is connected with corresponding spring contact 53, and contact slot 244 can make spring contact 53 and contact strip 243 have the connection characteristics of high stability, make the battery inserted in battery frock 24 put through the internal detection circuitry and the charge-discharge circuit of cabinet to keep stable operating condition, and then make the function that the partial volume cabinet realized the partial volume. Furthermore, the water cooling pipes 31 are arranged on the two sides of the battery tool 24, so that high cooling performance is provided for the battery in detection, and cooling water can be replaced periodically; meanwhile, the battery tool 24 adopts a frame structure and is matched with the metal net 242, so that heat dissipation can be facilitated, and the cooling effect of the medium air cooling part of the heat dissipation assembly 3 is facilitated, so that the device has higher reliability for the result of capacity grading detection of the battery, and is reasonable in design, lower in cost and higher in utilization rate.

In order to improve the connection performance of the clamping assembly 2 to batteries with different specifications and the contact assembly 5 and consider the connection characteristics of the batteries and the battery tool 24, the two pole pieces 243 are arranged in the battery tool 24 side by side and are close to the lower left corner of the rear end face of the battery tool 24, the height of the pole pieces 243 is 1/2-3/4 of the height of the battery tool 24, and the width of the pole pieces 243 is 1/3 of the battery tool 24, so that poles designed by batteries with more specifications can be in contact connection with the corresponding pole pieces, the electrical connection with the contact assembly 5 is established, and the situation that the two poles of the same battery are short-circuited is avoided.

In order to improve the connection reliability of the spring contact 53 and the pole piece 243, the invention designs the contact groove 244 to limit the end of the spring contact 53, and designs the spring contact 53 to have a certain elastic interval. Specifically, the spring contact 53 includes an electric post 531 electrically connected to a circuit board disposed inside the cabinet, the electric post 531 is threadedly connected to the contact connection hole, a contact spring (not shown) is disposed at a front end of the electric post 531, a contact ball 532 is disposed at a front end of the contact spring, and a diameter of the contact ball 532 is smaller than a width of the contact groove 244. In the process of pressing the cabinet door 6 communicated with the battery tool to the contact assembly, the contact ball 532 can contact the pole piece 243 in advance, and after the whole cabinet door 6 is completely locked on the cabinet body 1, the contact ball 532 compresses the spring to generate elastic potential energy, and the pressure of the spring is utilized to ensure that the contact ball 532 and the pole piece 243 keep a high-stability connection state.

In order to improve the clamping stability of the clamping assembly 2 for batteries of different specifications, the telescopic mechanism 23 in the invention comprises an extension spring 231, the rear end of the extension spring 231 is connected with a spring groove arranged at the end part of the supporting plate 21, the front end of the extension spring 231 is fixedly provided with a rotary joint 232, and the front end of the rotary joint 232 is provided with an adjusting rod 233 in threaded connection with the movable clamping plate 22. The rotary joint 232 is mainly matched with the rotation action of the adjusting rod 233, so that the tension spring is prevented from being twisted due to the adjustment of the adjusting rod 233; the longest distance between the movable clamping plate 22 and the rear end of the battery tooling 24 can be changed by changing the matching depth of the adjusting rod 233 on the movable clamping plate 22, so that the movable clamping plate 22 can abut against the end face of the battery without a pole, and the battery has higher stability in the battery tooling.

Further, the movable clamping plate 22 provided by the present invention comprises a first vertical portion 221, a first horizontal portion 222, a second vertical portion 223 and a second horizontal portion 224 which are connected in sequence, wherein a bottom surface of the first horizontal portion 221 is provided with a guide bar (not shown in the figure), and the guide bar is movably matched with a guide groove arranged on the supporting surface of the pallet. The guide strips and the guide grooves can adopt a dovetail structure to ensure the stability of the movable clamping plate 22 in the process of clamping the battery and avoid the condition of overturning. First vertical portion 221 can cooperate the battery of less specification and stretch into the battery frock inside and treat that detect the battery and carry out the centre gripping fixed, and can make movable clamp plate 22 fix corresponding battery with epitaxial form to the battery of great specification, has improved the utilization ratio and the practicality of centre gripping subassembly 2 on the one hand, and on the other hand then is favorable to the total volume of reasonable control whole cabinet door 6 and battery frock 24, and then improves the space utilization of whole equipment.

In order to improve the heat dissipation performance of the device, the through hole 52 provided by the invention further comprises a horizontal hole 522 and a vertical hole 523 which are positioned around the contact connection hole, the top of the mounting plate 51 is provided with two U-shaped structure holes 524 which are symmetrically distributed about the plugging slot, and the bottom of the mounting plate 51 is provided with two U-shaped structure holes 524 which are symmetrically distributed about the plugging strip. In all the through holes 52, except the contact connecting holes 521, other structural holes can play a positive role in promoting the circulation of airflow inside the cabinet.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.

Claims

1. A battery charging and discharging capacity grading cabinet comprises a cabinet body, wherein a plurality of clamping assemblies and heat dissipation assemblies are arranged on the cabinet body, the clamping assemblies are distributed in a rectangular array, a control panel is arranged on one side of the cabinet body, a contact assembly is arranged in the cabinet body and connected with the clamping assemblies, the front side of the cabinet body is rotatably provided with a cabinet door, a plurality of battery openings which are in one-to-one correspondence with the clamping assemblies are formed in the cabinet door, the clamping assemblies comprise a battery tool arranged on the inner side of the cabinet door and a supporting plate arranged on the outer side of the cabinet door, a movable clamping plate is arranged on the front side of the supporting plate, a telescopic mechanism is arranged between the rear side of the movable clamping plate and the front end face of the supporting plate, the battery tool is of a frame structure, a bottom plate is arranged at the bottom of the battery tool, and metal nets are arranged on the top surface, the left surface and the right surface of the battery tool, the battery tool is characterized in that two pole pieces are arranged in the battery tool, the cross sections of the pole pieces are L-shaped, one ends of the pole pieces extend out of the back of the battery tool and extend towards the inside of the cabinet body, two contact grooves are formed in the rear end of the battery tool, pole piece holes for passing the pole pieces are formed in the contact grooves, a contact assembly is arranged on the rear side of the clamping assembly in the same row and comprises a mounting plate, a plurality of through holes are formed in the mounting plate and comprise contact connecting holes, spring contacts are arranged in the contact connecting holes, the front ends of the spring contacts are movably connected with the pole pieces, inserting grooves and inserting strips which are consistent with the length direction of the spring contacts are respectively arranged at the top and the bottom of the mounting plate, a plurality of pairs of square holes are formed in the two sides of the mounting plate, and a connecting plate is arranged in the cabinet body and close to the mounting plate, the connecting plate is provided with square columns matched with the square holes, the inner side of the cabinet door is provided with water-cooling pipes which are distributed at intervals with each row of clamping assemblies, the bottom of each water-cooling pipe is provided with a common main pipe, and two ends of each main pipe are provided with plugs.

2. The battery charging and discharging capacity grading cabinet according to claim 1, wherein the two pole pieces are arranged side by side in the battery tool and close to the lower left corner of the rear end face of the battery tool, the height of the pole pieces is 1/2-3/4 of the height of the battery tool, and the width of the pole pieces is 1/3 of the battery tool.

3. The battery charging and discharging capacity grading cabinet according to claim 2, wherein the spring contact comprises an electric connecting post electrically connected with a circuit board arranged inside the cabinet body, the electric connecting post is in threaded connection with the contact connecting hole, a contact spring is arranged at the front end of the electric connecting post, a contact ball is arranged at the front end of the contact spring, and the diameter of the contact ball is smaller than the width of the contact groove.

4. The battery charging and discharging capacity grading cabinet according to claim 3, wherein the telescopic mechanism comprises an extension spring, the rear end of the extension spring is connected with a spring groove arranged at the end part of the supporting plate, a rotary joint is fixedly arranged at the front end of the extension spring, and an adjusting rod in threaded connection with the movable clamping plate is arranged at the front end of the rotary joint.

5. The battery charging and discharging capacity grading cabinet according to claim 4, wherein the movable clamping plate comprises a first vertical part, a first horizontal part, a second vertical part and a second horizontal part which are connected in sequence, a guide strip is arranged on the bottom surface of the first horizontal part, and the guide strip is movably matched with a guide groove arranged on the supporting surface of the supporting plate.

6. The battery charging and discharging capacity grading cabinet according to claim 5, wherein the through holes further comprise horizontal holes and vertical holes around the contact connecting holes, the top of the mounting plate is provided with two U-shaped holes symmetrically distributed about the insertion groove, and the bottom of the mounting plate is provided with two U-shaped holes symmetrically distributed about the insertion strip.