阅读说明：本技术 一种蓄电池充放电故障排除装置 (Charge and discharge fault removing device for storage battery ) 是由 葛青青 杨成钢 唐毅博 傅颖 李长宇 李贤良 黄镠 仲跻极 孙永斌 吴宏熊 于 2019-08-01 设计创作，主要内容包括：本发明公开了一种蓄电池充放电故障排除装置,包括有外壳、盖板、端盖以及蓄电池组,所述盖板与外壳形成密封室,所述蓄电池组设置在密封室中,所述端盖与外壳固定连接；还包括有电路板,所述电路板固定设置在端盖内侧壁上,所述电路板集成有若干控制电路；任一个控制电路包括多个续流电路、多个报警电路以及一个降温电路,一个续流电路与单节蓄电池并联,一个报警电路与一个续流电路并联,所述降温电路与多个单节蓄电池组成的电池模组并联。本发明设计的蓄电池充放电故障排除装置,设置有电路板,电路板设置有控制电路,可以实现开路续流,故障报警以及局部降温的功能,保障蓄电池高效安全的运行。(The invention discloses a charging and discharging fault removing device for a storage battery, which comprises a shell, a cover plate, an end cover and a storage battery pack, wherein the cover plate and the shell form a sealed chamber; the circuit board is fixedly arranged on the inner side wall of the end cover and is integrated with a plurality of control circuits; any control circuit includes a plurality of afterflow circuits, a plurality of warning circuit and a cooling circuit, and an afterflow circuit is parallelly connected with single section battery, and an warning circuit is parallelly connected with an afterflow circuit, the battery module that cooling circuit and a plurality of single section battery are constituteed is parallelly connected. The charging and discharging fault removing device for the storage battery is provided with the circuit board, the circuit board is provided with the control circuit, the functions of open-circuit follow current, fault alarming and local cooling can be realized, and the efficient and safe operation of the storage battery is guaranteed.)

1. A charging and discharging fault removing device for a storage battery comprises a shell, a cover plate, an end cover and a storage battery pack, wherein the cover plate and the shell form a sealed chamber, the storage battery pack is arranged in the sealed chamber, and the end cover is fixedly connected with the shell; the end cover is characterized by further comprising a circuit board, wherein the circuit board is fixedly arranged on the inner side wall of the end cover, and a plurality of control circuits are integrated on the circuit board.

2. The battery charging and discharging fault removing device according to claim 1, wherein any one of the control circuits comprises a plurality of follow current circuits, a plurality of alarm circuits and a temperature reduction circuit, one follow current circuit is connected with a single battery in parallel, one alarm circuit is connected with one follow current circuit in parallel, and the temperature reduction circuit is connected with a battery module consisting of a plurality of single batteries in parallel.

3. The battery charging and discharging fault removing device according to claim 2, wherein the freewheeling circuit comprises a freewheeling diode D1, the cathode terminal of the freewheeling diode D1 is electrically connected with the positive terminal of the battery B1, the anode terminal of the freewheeling diode D1 is electrically connected with the first terminal of the relay K1, and the second terminal of the relay K1 is electrically connected with the negative terminal of the battery B1.

4. The battery charging and discharging fault removing device according to claim 3, wherein the alarm circuit comprises an alarm lamp L1, a first end of the alarm lamp L1 is electrically connected with a cathode end of a freewheeling diode D1, a second end of the alarm lamp L1 is electrically connected with a first end of a normally open contact J3, a second end of a normally open contact J3 is electrically connected with a first end of a normally open contact J1, a second end of the normally open contact J1 is electrically connected with a first end of a relay K1, a first end of a normally open contact J1 is electrically connected with a first end of a current limiting resistor R1, a second end of a current limiting resistor R1 is electrically connected with a first end of a relay K3, and a second end of a relay K3 is electrically connected with a first end of an alarm lamp L.

5. The battery charging and discharging troubleshooting device of claim 4 wherein said cooling circuit includes a fan M having a positive terminal electrically connected to said second terminal of said relay K3, a negative terminal electrically connected to said first terminal of said contact J5, a second terminal of said contact J5 electrically connected to said first terminal of said resistor R3, and a second terminal of said resistor R3 electrically connected to said negative terminal of said battery module.

6. The battery charging and discharging fault removing device according to claim 1, wherein the cover plate is provided with a plurality of exhaust valves, an anode bus bar and a cathode bus bar, each terminal of the anode bus bar is electrically connected with the positive plate of the single battery, and each terminal of the cathode bus bar is electrically connected with the negative plate of the single battery.

7. The battery charging and discharging troubleshooting device of claim 6 wherein said circuit board has a positive terminal and a negative terminal, said positive terminal being electrically connected to said positive terminal of said positive bus bar and said negative terminal being electrically connected to said negative terminal of said negative bus bar.

8. The battery charging and discharging troubleshooting device of claim 7 wherein said end cap is provided with a display screen, an air hole corresponding to the position of the vent valve and a shutter for heat dissipation, said display screen being electrically connected to the display circuit of the circuit board.

Technical Field

The invention relates to the field of storage battery charging and discharging control, in particular to a storage battery charging and discharging fault removing device.

Background

The storage battery packs of direct-current power supply systems and energy storage substations for electric power, communication and the like are operated in series, and when any battery pack has an open-circuit fault, the battery cannot provide working current, so that the whole battery pack loses due effect. In recent years, due to the open-circuit fault of the storage battery, the protection control equipment is often rejected, a large-area power failure accident is caused for many times, and the safe and stable operation of the power system is seriously threatened.

At present, the operation, maintenance and management of the series storage battery pack mainly comprise: detecting out a lagging fault battery by measuring parameters such as terminal voltage, internal resistance and temperature of the storage battery and analyzing and judging; and (4) checking the capacity of the storage battery pack regularly, wherein the discharge capacity of the storage battery pack is required to be not lower than 80% of rated capacity and the like. However, despite the maintenance work, there still exist the problems that open-circuit fault cells cannot be found in time, and when some storage batteries are open-circuited, the storage battery pack cannot continue to supply working current to the load in time, which greatly reduces the stability and reliability of system operation.

The lead-acid accumulator consists of mainly positive and negative plates, partition board, electrolyte, cell body and other parts. The bus bar is used for connecting all polar plates to the bus bar of the polar post, the connecting process from the polar plates to the bus bar adopts a welding process, and the heat generated under the impact of large current is easy to fall off to cause the open-circuit fault of the storage battery.

Chinese patent, publication No.: CN109244572A, publication date: 2019, 1 month and 18 days, discloses and provides a storage battery open-circuit follow current and alarm device, which comprises: the open-circuit follow current device is connected with the single storage batteries in parallel in a one-to-one correspondence mode and comprises a diode used for conducting a corresponding follow current circuit when the single storage batteries are open-circuited, a radiator is arranged on the diode, and a temperature switch is arranged on the radiator; the open-circuit alarm device comprises a control circuit which is communicated with the background host and is used for realizing alarm and takes the temperature switch as a control switch, and the output end of the control circuit is provided with a warning lamp; the control circuit comprises a first circuit and a second circuit, and the temperature switch is arranged on the first circuit. When the battery is enabled to continue current in time, the position of the detected fault is kept, the maintenance is convenient, but the device does not have corresponding cooling protection measures, and the frequency of the storage battery having faults is higher.

Disclosure of Invention

The first purpose of the invention is to solve the problem that the storage battery pack loses the charging and discharging function due to the circuit break of a single storage battery in the charging and discharging process of the storage battery; the second purpose is to solve the problem of local overhigh temperature caused by the circuit failure of the storage battery; the device is characterized in that a circuit board is arranged between a storage battery pack and an end cover, the circuit board is provided with a control circuit, the control circuit is provided with a follow current circuit for follow current of the fault circuit and a heat dissipation circuit, and the charge and discharge stable operation of the storage battery is ensured.

In order to achieve the technical purpose, the invention provides a technical scheme that the device for eliminating the charging and discharging faults of the storage battery comprises a shell, a cover plate, an end cover and a storage battery pack, wherein the cover plate and the shell form a sealed chamber, the storage battery pack is arranged in the sealed chamber, and the end cover is fixedly connected with the shell; the circuit board is fixedly arranged on the inner side wall of the end cover, and a plurality of control circuits are integrated on the circuit board. In this scheme, form independent space between apron and the end cover, on the circuit board set up the apron inner wall, be provided with control circuit on the circuit board, in case, battery charge-discharge breaks down, control circuit can move, and the concrete function that can realize includes the afterflow, and cooling and warning can improve the charge-discharge rate of battery and guarantee the battery safe operation.

Any control circuit includes a plurality of afterflow circuits, a plurality of warning circuit and a cooling circuit, and an afterflow circuit is parallelly connected with single section battery, and an warning circuit is parallelly connected with an afterflow circuit, the battery module that cooling circuit and a plurality of single section battery are constituteed is parallelly connected. In the scheme, according to the design requirements of the batteries, the storage battery pack can be set into a plurality of storage battery modules, each storage battery module is provided with a cooling circuit, each storage battery module is formed by connecting a plurality of single storage batteries in series, the number of the storage batteries and the number of the alarm circuits are equal to that of the single storage batteries, when one single storage battery is disconnected, the follow current circuit starts to act, so that the charging and discharging functions of the storage battery are ensured to be normal, meanwhile, an alarm lamp of the alarm circuit is turned on, and maintenance personnel can specifically know which single battery is disconnected; the cooling circuit is started, the fan dissipates heat to the inner space, the local overheating phenomenon of the circuit caused by circuit faults is avoided, and the service life of the battery is prolonged.

The freewheeling circuit comprises a freewheeling diode D1, the cathode end of the freewheeling diode D1 is electrically connected with the anode end of the storage battery B1, the anode end of the freewheeling diode D1 is electrically connected with the first end of the relay K1, and the second end of the relay K1 is electrically connected with the cathode end of the storage battery B1. In this scheme, when battery B1's busbar terminal because overheated circuit contact fault who leads to, freewheeling diode can produce short duration delay current, and relay K1 switches on, and relay K1 moves, leads to normally opening contact J1 closed, and battery circuit current directly bypasses the trouble battery, guarantees the normal of battery charge-discharge function.

The alarm circuit comprises an alarm lamp L1, the first end of the alarm lamp L1 is electrically connected with the cathode end of a freewheeling diode D1, the second end of the alarm lamp L1 is electrically connected with the first end of a normally open contact J3, the second end of the normally open contact J3 is electrically connected with the first end of a normally open contact J1, the second end of the normally open contact J1 is electrically connected with the first end of a relay K1, the first end of the normally open contact J1 is electrically connected with the first end of a current-limiting resistor R1, the second end of the current-limiting resistor R1 is electrically connected with the first end of a relay K3, and the second end of the relay K3 is electrically connected with the first. In the scheme, when a single storage battery B1 is in open circuit fault, the relay K1 acts, the normally open contact J1 is attracted, and the relay K3 is conducted; relay K3 action leads to normally opening contact J3 actuation, and the electric current passes through warning light L1 this moment, and the warning light is lighted, and relay K3 is broken circuit, and maintenance personal can specifically know which section monocell opens a way according to the warning light, the maintenance of being convenient for.

The cooling circuit comprises a fan M, wherein the positive end of the fan M is electrically connected with the second end of the relay K3, the negative end of the fan is electrically connected with the first end of the contact J5, the second end of the contact J5 is electrically connected with the first end of the resistor R3, and the second end of the resistor R3 is electrically connected with the negative end of the battery module. In this scheme, when battery B1 open circuit trouble, when relay K3 actuation, contact J5 actuation, contact J5 has self-locking function, and when relay K3 was lost the electricity by the short circuit, the contact continued to keep the actuation, and the fan that links to each other with it begins the operation, can give the local cooling of battery module, avoids the emergence of further trouble, has prolonged the life of battery.

The cover plate is provided with a plurality of exhaust valves, an anode bus bar and a cathode bus bar, each wiring terminal of the anode bus bar is electrically connected with the positive plate of the single storage battery, and each wiring terminal of the cathode bus bar is electrically connected with the negative plate of the single storage battery. In this scheme, on a plurality of discharge valve, positive pole busbar and negative pole busbar all were provided with the apron, guaranteed storage battery's independent environment, be convenient for maintenance and fan heat.

The circuit board is provided with a positive wiring bar and a negative wiring bar, the terminal of the positive wiring bar is correspondingly and electrically connected with the wiring terminal of the anode bus bar, and the terminal of the negative wiring bar is correspondingly and electrically connected with the wiring terminal of the cathode bus bar. In this scheme, be provided with positive wiring row and negative wiring row on the circuit board for circuit board control circuit has fine expansibility, can match binding post figure according to the number of single section battery, connects and inserts the convenience, is convenient for maintain and overhaul.

The end cover is provided with a display screen, an air hole corresponding to the position of the exhaust valve and a shutter used for heat dissipation, and the display screen is electrically connected with a display circuit of the circuit board. In this scheme, the display screen can conveniently show the electric quantity of the battery of charge-discharge, can report to the police to the trouble simultaneously, and convenience of customers formulates the charge-discharge strategy according to the electric quantity, cooling circuit connection's fan fixed mounting makes things convenient for the hot-air outgoing in independent space in the lower part of shutter, avoids the emergence of further trouble.

The invention has the beneficial effects that: 1. the charge and discharge fault removing device for the storage battery is provided with the circuit board, the circuit board is provided with the control circuit, the functions of open-circuit follow current, fault alarming and local cooling can be realized, and the efficient and safe operation of the storage battery is guaranteed; 2. each section of storage battery is provided with a follow current circuit and a protection circuit, so that maintenance personnel can conveniently maintain the storage battery, and the maintenance efficiency is improved.

Drawings

Fig. 1 is an exploded view of a battery charge and discharge troubleshooting apparatus.

Fig. 2 is a partial circuit schematic diagram of a battery module of a battery charge and discharge failure removal device.

The notation in the figure is: 1-storage battery pack, 2-shell, 3-cover plate, 4-end cover, 5-circuit board, 6-control circuit, 31-exhaust valve, 32-cathode bus bar, 33-anode bus bar, 41-air hole, 42-display screen, 43-shutter, 44-positive pole, 45-negative pole, 51-positive wiring bar and 52-negative wiring bar. The device comprises a follow current circuit 61, an alarm circuit 62 and a temperature reduction circuit 63.

Detailed Description

For the purpose of better understanding the objects, technical solutions and advantages of the present invention, the following detailed description of the present invention with reference to the accompanying drawings and examples should be understood that the specific embodiment described herein is only a preferred embodiment of the present invention, and is only used for explaining the present invention, and not for limiting the scope of the present invention, and all other embodiments obtained by a person of ordinary skill in the art without making creative efforts shall fall within the scope of the present invention.