CN218037027U - Dual-current detection system - Google Patents
Dual-current detection system Download PDFInfo
- Publication number
- CN218037027U CN218037027U CN202221891174.8U CN202221891174U CN218037027U CN 218037027 U CN218037027 U CN 218037027U CN 202221891174 U CN202221891174 U CN 202221891174U CN 218037027 U CN218037027 U CN 218037027U
- Authority
- CN
- China
- Prior art keywords
- current
- fuse
- shunt
- storage battery
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model discloses a double-current detection system, which comprises a direct-current power supply bus, a first fuse wire, a storage battery pack, a second fuse wire, a shunt and a Hall current sensor; the positive pole of the direct-current power supply bus, the first fuse, the storage battery pack, the second fuse, the shunt and the negative pole of the direct-current power supply bus form a detection loop, and the Hall current sensor is arranged between the positive pole of the direct-current power supply bus and the first fuse in a penetrating mode; one end of the first fuse wire is electrically connected with the positive electrode of the direct-current power supply bus, and the other end of the first fuse wire is electrically connected with the positive electrode of the storage battery pack; one end of the second fuse is electrically connected with the negative electrode of the storage battery pack, and the other end of the second fuse is electrically connected with one end of the shunt; the shunt and the Hall current sensor are respectively electrically connected with the monitoring module. The collected current signals are fed back to the monitoring module through the shunt and the Hall current sensor, and then the discharging current and the charging current are controlled, so that the effect of accurately controlling the discharging current and the charging current is achieved, and the service life of the storage battery pack is greatly prolonged.
Description
Technical Field
The utility model relates to an electric power system monitoring technology field, more specifically relates to a two current detection system.
Background
The current commonly used detection system is 1200A/1600A system, the capacity of the battery input fuse is generally 1250A/1600A, the passed discharge current can reach 500-1000A, and the shunt is mostly selected as the detection accessory, the measuring range of the shunt generally corresponds to the fuse: 1250A/1600A, but when the current for charging the battery pack is generally set to 0.1c10, that is, the battery charging current of 800AH is limited within 80A, the battery charging current of 1000AH is only within 100A, the error ratio of current precision in measuring 80-100A by using the current divider of 1250A/1600A is large, the charging current may reach 0.15c10-0.2c10 current, even larger, and the service life of the battery can be greatly shortened; or much less than 0.1C10, such as only 0.05C10, will greatly extend the charge time.
The prior document 1 discloses a current detection system, which includes a DC power supply bus 1', a storage battery pack 2', a fuse 3', a shunt 4' and a monitoring module 5', wherein a positive electrode DC + of the DC power supply bus 1' is electrically connected to the storage battery pack 2 'through the fuse 3', the storage battery pack 2 'is electrically connected to a negative electrode of the DC power supply bus 1' through the shunt 4', the shunt 4' is electrically connected to the monitoring module 5', the shunt 4' is used for collecting a large current signal, the shunt 4 'feeds a discharge current value back to the monitoring module 5', and the monitoring module 5 'is used for receiving the current value fed back by the shunt 4', so that the discharge current can be controlled to discharge, the monitoring module 5 'adopts a 240V high voltage DC monitoring module, but the shunt 4' can only detect the discharge current, and cannot detect the charge current, so that the charge time of the storage battery pack can be prolonged, and the service life of the storage battery can be shortened.
Prior document 2 (CN 212872809U) discloses a device for monitoring a floating charge current of a storage battery, which includes a main control device, a display device, a current monitoring module, an alarm module, a shunt, and a hall current sensor, wherein the shunt is connected in series in a power supply loop of the storage battery, and the hall current sensor is inserted into the power supply loop through an input through hole; the shunt and the Hall current sensor are respectively connected with the main control device through an AD conversion module, and the main control device is used for acquiring a real-time current value of the tested storage battery; the current monitoring module is connected with the main control device and used for receiving a preset current threshold range input by a user and sending the preset current threshold range to the main control device.
Therefore, it is highly desirable to provide a dual current detection system, which can not only control the discharging current and the charging current to achieve the effect of precisely controlling the discharging current and the charging current, but also improve the safety of the operation of the device as a whole.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a dual current detection system, including direct current power supply bus, first fuse, storage battery, second fuse, shunt and hall current sensor;
the positive electrode of the direct-current power supply bus, the first fuse, the storage battery pack, the second fuse, the shunt and the negative electrode of the direct-current power supply bus form a detection loop, and the Hall current sensor is arranged between the positive electrode of the direct-current power supply bus and the first fuse in a penetrating mode;
one end of the first fuse wire is electrically connected with the positive electrode of the direct-current power supply bus, and the other end of the first fuse wire is electrically connected with the positive electrode of the storage battery pack;
one end of the second fuse is electrically connected with the negative electrode of the storage battery pack, the other end of the second fuse is electrically connected with one end of the current divider, and the other end of the current divider is connected with the negative electrode of the direct-current power supply bus;
the shunt and the Hall current sensor are respectively and electrically connected with a monitoring module, and the monitoring module is used for receiving current values fed back by the shunt and the Hall current sensor.
Optionally, the hall current sensor is a contactless hall current sensor.
Optionally, the battery pack is a 240V battery pack.
Optionally, the monitoring module is a 240V high voltage direct current monitoring system.
Compared with the prior art, the utility model provides a two current detection system has realized following beneficial effect at least:
the utility model feeds the collected current signal back to the monitoring module through the shunt and the Hall current sensor, so as to control the discharging current and the charging current, thereby achieving the effect of accurately controlling the discharging current and the charging current, and greatly prolonging the service life of the storage battery; the storage battery can be charged in a current-limiting manner more accurately during charging, so that the safety and reliability of the storage battery for standby power are greatly guaranteed; the first fuse wire and the second fuse wire are electrically connected with the positive electrode and the negative electrode of the storage battery respectively, the storage battery can be better protected by the first fuse wire and the second fuse wire, meanwhile, due to the fact that the used voltage level is high, system output belongs to suspension power supply, the operation safety of equipment is integrally improved, the first fuse wire and the second fuse wire can be disconnected when maintenance is needed, and the maintenance safety is integrally improved.
Of course, it is not necessary for any product of the present invention to achieve all of the above-described technical effects simultaneously.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a circuit diagram of a current detection system according to a related art;
fig. 2 is a circuit diagram of a dual current detection system according to the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.
Fig. 2 is a circuit diagram of a dual current detection system provided by the present invention, referring to fig. 2, the present embodiment provides a dual current detection system, which includes a dc power bus 1, a first fuse 2, a battery pack 3, a second fuse 4, a shunt 5, and a hall current sensor 6;
the positive electrode of the direct-current power supply bus, the first fuse 2, the storage battery pack 3, the second fuse 4, the shunt 5 and the negative electrode of the direct-current power supply bus form a detection loop, wherein the Hall current sensor 6 is arranged between the positive electrode of the direct-current power supply bus and the first fuse 2 in a penetrating mode;
one end of the first fuse 2 is electrically connected with the anode of the direct-current power supply bus, and the other end of the first fuse is electrically connected with the anode of the storage battery pack 3;
one end of the second fuse 4 is electrically connected with the negative electrode of the storage battery 3, the other end of the second fuse is electrically connected with one end of the shunt 5, and the other end of the shunt 5 is connected with the negative electrode of the direct-current power supply bus;
the shunt 5 and the hall current sensor 6 are respectively electrically connected with a monitoring module 7, and the monitoring module 7 is used for receiving current values fed back by the shunt 5 and the hall current sensor 6.
Specifically, the dual-current detection system comprises a direct-current power supply bus 1, a first fuse 2, a storage battery pack 3, a second fuse 4, a shunt 5 and a hall current sensor 6, wherein one end of the first fuse 2 is electrically connected with a positive electrode DC + of the direct-current power supply bus, the other end of the first fuse 2 is electrically connected with a positive electrode of the storage battery pack 3, one end of the second fuse 4 is electrically connected with a negative electrode of the storage battery pack 3, the other end of the second fuse 4 is electrically connected with one end of the shunt 5, and the other end of the shunt 5 is connected with a negative electrode DC-of the direct-current power supply bus, namely, the positive electrode DC + of the direct-current power supply bus, the first fuse 2, the storage battery pack 3, the second fuse 4, the shunt 5 and the negative electrode DC-of the direct-current power supply bus form a detection loop; the storage battery pack 3 is positioned between the first fuse 2 and the second fuse 4, namely the anode and the cathode of the storage battery pack 3 are respectively and electrically connected with the first fuse 2 and the second fuse 4, and the storage battery pack 3 is better protected by the first fuse 2 and the second fuse 4, so that the service life of the storage battery pack 3 can be prolonged;
the Hall current sensor 6 is arranged between the positive electrode of the direct-current power supply bus and the first fuse 2 in a penetrating mode, the Hall current sensor 6 is used for measuring charging current, and the Hall current sensor 6 penetrates through a positive electrode cable of the direct-current power supply bus to facilitate detection of the charging current;
the shunt 5 and the Hall current sensor 6 are respectively electrically connected with the monitoring module 7, the shunt 5 is used for measuring discharge current, the Hall current sensor 6 is used for measuring charge current, the discharge current value and the charge current value which are acquired by the shunt 5 and the Hall current sensor 6 are respectively fed back to the monitoring module 7, and the monitoring module 7 is used for receiving the current values fed back by the shunt 5 and the Hall current sensor 6, so that the discharge current can be controlled to discharge, the charge current can be controlled to charge accurately, and the service life of the storage battery is greatly prolonged; the current value acquired is directly fed back to the monitoring module 7 through the shunt 5 and the Hall current sensor 6, so that high-precision measurement of large current and small current can be realized, and the precision of current detection is improved; the monitoring module 7 can also adopt a 240V high-voltage direct-current monitoring module, the monitoring module 7 is the same as the monitoring module 5 'in the prior document 1, and the monitoring module 5' is not improved in the application;
the Hall current sensor 6 can be 0.1C10 or a non-contact Hall current sensor slightly larger than the current range, the non-contact Hall current sensor 6 only needs to pass through a positive cable of a direct-current power supply bus, the shunt 5 is connected in series in the detection circuit, voltage drop exists after the shunt flows through the detection circuit, the current is calculated by measuring the voltage drop, the Hall current sensor 6 is not connected in series in the detection circuit, only a lead passes through the middle of the detection circuit, and the charging current is calculated by sensing the voltage;
the Hall sensor collects a current signal and feeds the current signal back to the monitoring module, so that the charging current is controlled, and the purpose of accurately controlling the charging current is achieved;
the specific working principle is as follows: at storage battery 3 as the power provider, when the heavy current discharges, the heavy current passes through shunt 5 and the outside electric energy that provides of second fuse 4, at this moment, hall current sensor 6 does not participate in work, but after discharging, when charging storage battery 3, hall sensor 6 puts into operation, hall sensor 6 carries out current acquisition 8, feed back the current value of gathering to monitoring module 7, and then control charging current very accurate charging, greatly increase battery life, simultaneously because first fuse 2 and second fuse 4 are connected to the positive negative pole difference electricity at storage battery 3, can protect storage battery 3 more effectively, prolong its life.
It should be noted that: the double-current detection system can be applied to current detection in a large-current system, and particularly comprises a current detection system of a backup battery; the first fuse 2 and the second fuse 4 can adopt battery fuses, and the shunt 5 can adopt an FL01 shunt; the storage battery pack 3 can be a 240V storage battery pack, and of course, the above models can be replaced according to actual conditions.
According to the above embodiment, the utility model provides a two current detection system has realized following beneficial effect at least:
the utility model feeds the collected current signal back to the monitoring system through the shunt and the Hall current sensor, and then controls the discharging current and the charging current, so as to achieve the effect of accurately controlling the discharging current and the charging current, thereby greatly prolonging the service life of the storage battery; the storage battery can be charged in a current-limiting manner more accurately during charging, so that the safety and reliability of the storage battery for power supply are greatly guaranteed; through connect first fuse and second fuse in storage battery's positive negative pole electricity respectively, first fuse and second fuse can protect storage battery better, simultaneously because used voltage class is higher, system output belongs to the suspension power supply, has improved equipment operation's security on the whole, can break off first fuse and second fuse when needing to maintain, has improved maintenance security on the whole, consequently, on the basis of current document 1, combine current document 2 can not obtain the technical scheme of the utility model.
Although certain specific embodiments of the present invention have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (4)
1. A double-current detection system is characterized by comprising a direct-current power supply bus, a first fuse, a storage battery pack, a second fuse, a shunt and a Hall current sensor;
the positive electrode of the direct-current power supply bus, the first fuse, the storage battery pack, the second fuse, the shunt and the negative electrode of the direct-current power supply bus form a detection loop, and the Hall current sensor is arranged between the positive electrode of the direct-current power supply bus and the first fuse in a penetrating mode;
one end of the first fuse wire is electrically connected with the positive electrode of the direct-current power supply bus, and the other end of the first fuse wire is electrically connected with the positive electrode of the storage battery pack;
one end of the second fuse is electrically connected with the negative electrode of the storage battery pack, the other end of the second fuse is electrically connected with one end of the current divider, and the other end of the current divider is connected with the negative electrode of the direct-current power supply bus;
the shunt and the Hall current sensor are respectively and electrically connected with a monitoring module, and the monitoring module is used for receiving current values fed back by the shunt and the Hall current sensor.
2. The dual current detection system of claim 1, wherein the hall current sensor is a non-contact hall current sensor.
3. The dual current detection system of claim 1, wherein said battery pack is a 240V battery pack.
4. The dual current detection system according to any one of claims 1-3, wherein the monitoring module is a 240V high voltage direct current monitoring system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221891174.8U CN218037027U (en) | 2022-07-21 | 2022-07-21 | Dual-current detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221891174.8U CN218037027U (en) | 2022-07-21 | 2022-07-21 | Dual-current detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218037027U true CN218037027U (en) | 2022-12-13 |
Family
ID=84385213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221891174.8U Active CN218037027U (en) | 2022-07-21 | 2022-07-21 | Dual-current detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218037027U (en) |
-
2022
- 2022-07-21 CN CN202221891174.8U patent/CN218037027U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103802763B (en) | A kind of armored vehicle high direct voltage big current combination power distribution protective device | |
| EP2887080B1 (en) | Power supply apparatus | |
| CN102570558B (en) | Intelligent charger of nickel-hydrogen nickel-cadmium battery and control method thereof | |
| CN110346682B (en) | Output connection state detection circuit and method for DCDC converter of electric vehicle | |
| CN101247050A (en) | DC power device and its charge and discharge monitoring method | |
| CN112394302A (en) | Storage battery pack sampling line breakage detection device and method | |
| CN107884722B (en) | Online distributed storage battery monitoring equipment | |
| CN110336357A (en) | A kind of novel lithium battery protection board | |
| CN106299180B (en) | The combination of electric tool and battery pack | |
| CN218037027U (en) | Dual-current detection system | |
| CN210225002U (en) | Charging control device and system | |
| CN219204173U (en) | Direct-current grounding auxiliary power supply device capable of achieving road pulling and searching | |
| CN204302468U (en) | Lithium battery on-line monitoring early warning system | |
| CN207732514U (en) | A kind of direct current cabinet | |
| CN216563283U (en) | Online self-maintenance system for storage battery | |
| CN109596880A (en) | One kind being based on substation's alternating current-direct current down Monitor Unit system and monitoring method | |
| CN209419296U (en) | A kind of charging circuit of pair of super capacitor | |
| CN209764998U (en) | Storage battery pack insulation descending positioning monitoring device | |
| CN112737053A (en) | Battery online detection technology and device for energy storage system | |
| CN208127933U (en) | Signal acquisition circuit and battery management system | |
| CN202159997U (en) | Lithium battery system | |
| CN210577939U (en) | Lithium battery powered UPS | |
| CN216121824U (en) | Battery on-line detection device for energy storage system | |
| CN221574874U (en) | Short-circuit protection device | |
| CN118358427A (en) | Charging system of electric automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |