CN219458688U - Charging and discharging device of parallel storage battery pack and parallel storage battery pack equipment - Google Patents
Charging and discharging device of parallel storage battery pack and parallel storage battery pack equipment Download PDFInfo
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- CN219458688U CN219458688U CN202222997919.5U CN202222997919U CN219458688U CN 219458688 U CN219458688 U CN 219458688U CN 202222997919 U CN202222997919 U CN 202222997919U CN 219458688 U CN219458688 U CN 219458688U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The embodiment of the utility model relates to the technical field of batteries, and discloses a charge and discharge device of a parallel storage battery pack, which comprises the following components: the device comprises a device body for accommodating a plurality of storage batteries, wherein a charging and discharging circuit is also arranged in the device body; each storage battery is electrically connected with the charging and discharging circuit respectively, a relay protector is correspondingly arranged between each storage battery and the charging and discharging circuit, and the relay protector is used for cutting off the connection between the storage battery and the charging and discharging circuit when the charging or discharging is abnormal. According to the embodiment of the utility model, the relay protector is arranged, so that the storage battery can be detected in real time, and when the storage battery has faults, the storage battery can be immediately cut off from the whole storage battery pack, so that the use of the whole storage battery pack is not influenced, the practicability of the device is improved, and the protection effect of the device is improved.
Description
Technical Field
The embodiment of the utility model relates to the technical field of batteries, in particular to a charging and discharging device of a parallel storage battery pack and parallel storage battery pack equipment.
Background
At present, the storage battery charge-discharge protection device is single in functionality, when a storage battery breaks down, the storage battery which breaks down can not be cut off, and then the use of the whole storage battery is affected, and the practicality of the device is reduced.
The existing parallel storage battery pack charge-discharge protection device has single functionality, and when a storage battery fails, the failed storage battery cannot be cut off, so that the use of the whole storage battery pack is affected, and the practicability of the device is reduced; in addition, the existing parallel storage battery pack charge-discharge protection device only protects during charging, and the stability of current during discharging directly influences the use of a load, so that the protection effect of the device is reduced.
Disclosure of Invention
In view of the above problems, the embodiments of the present utility model provide a charging and discharging device for a parallel storage battery and a parallel storage battery device, so as to solve the problem that when a storage battery fails, the existing storage battery cannot be cut off, thereby affecting the use of the whole storage battery and reducing the practicality of the device.
According to an aspect of the embodiment of the present utility model, there is provided a charge and discharge device of a parallel battery pack, the charge and discharge device including: the device comprises a device body for accommodating a plurality of storage batteries, wherein a charging and discharging circuit is also arranged in the device body; each storage battery is electrically connected with the charging and discharging circuit respectively, a relay protector is correspondingly arranged between each storage battery and the charging and discharging circuit, and the relay protector is used for cutting off the connection between the storage battery and the charging and discharging circuit when the charging or discharging is abnormal.
In an alternative manner, the charge-discharge circuit includes an upper connection pad and a lower connection pad; one end of the relay protector is connected with the upper connecting sheet, and the other end of the relay protector is connected with the first electrode of the storage battery; the second electrode of the storage battery is electrically connected with the lower connecting sheet.
In an alternative mode, the charging and discharging circuit comprises a charging port and a thermosensitive element which are arranged on the charging and discharging device; the thermosensitive element is electrically connected with the charging port and is used for disconnecting the charging port from the charging and discharging circuit when the temperature of the charging port is greater than a preset threshold value.
In an optional mode, the charging and discharging circuit further comprises a voltage stabilizing module, wherein the voltage stabilizing module is electrically connected with the charging port and the upper connecting sheet respectively and is used for stabilizing the charging voltage input by the charging port.
In an optional manner, the charging and discharging circuit further includes a charging voltage detection module, where the charging voltage detection module is disposed between the upper connection piece and the lower connection piece, and is configured to detect a charging voltage, and disconnect the charging port from the storage battery when the charging voltage exceeds a preset charging threshold.
In an alternative mode, one end of the charging port is electrically connected with the other end of the upper connecting sheet through a thermosensitive element; the other end of the charging port is electrically connected with the other end of the lower connecting sheet.
In an alternative manner, the charge-discharge circuit further includes a discharge port provided on the device body; one end of the discharging port is electrically connected with the storage battery; the other end of the discharging port is connected with a load and used for charging the load.
In an alternative mode, the charge-discharge circuit further comprises a current stabilizer arranged between the storage battery and the discharge port; the current stabilizer is electrically connected with the discharge port and is used for stabilizing the discharge current.
In an alternative manner, a plurality of heat dissipation grids are formed on the side wall of the device body for dissipating heat from the respective storage batteries in the device body.
According to another aspect of the embodiment of the present utility model, there is provided a parallel battery pack apparatus including the charge-discharge device of a parallel battery pack, and a plurality of batteries disposed in the charge-discharge device.
According to the embodiment of the utility model, the relay protector is correspondingly arranged between each storage battery and the charging and discharging circuit, and is used for cutting off the connection between the storage battery and the charging and discharging circuit when the charging or discharging is abnormal, so that the storage battery and the charging and discharging circuit can be detected in real time, and when the storage battery or the charging and discharging circuit has faults, the storage battery can be immediately cut off from the charging and discharging circuit of the whole storage battery body, the use of the whole storage battery body is not influenced, and the practicability of the device is improved.
The foregoing description is only an overview of the present utility model, and is intended to be implemented in accordance with the teachings of the present utility model in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present utility model more readily apparent.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
fig. 1 shows a schematic structural diagram of a charge-discharge device of a parallel storage battery pack according to an embodiment of the present utility model;
fig. 2 is a cross-sectional view of a device body in a charge and discharge device of a parallel battery pack according to an embodiment of the present utility model;
fig. 3 is a side view showing a charge and discharge device of a parallel battery pack according to an embodiment of the present utility model.
Reference numerals in the specific embodiments are as follows:
1. a heat-dissipating grille; 2. a battery pack body; 3. a discharge port; 4. a charging voltage detection module; 5. a thermosensitive element; 6. a guide piece; 7. an upper connecting sheet; 8. a current stabilizer; 9. a relay protector; 10. a lower connecting piece; 11. a storage battery; 12. a voltage stabilizing module; 13. and a charging port.
Detailed Description
Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.
First, the problems in the prior art corresponding to the embodiments of the present utility model will be described in further detail:
the storage battery is a device for directly converting chemical energy into electric energy, is a battery designed to be rechargeable, realizes recharging through reversible chemical reaction, and is usually referred to as a lead-acid storage battery, which is one of the batteries, belongs to a secondary battery, and needs to be charged and discharged frequently in use.
The utility model provides a storage battery charge-discharge protection device has been designed among the prior art scheme, including main control unit, total positive circuit, discharge contactor, charge positive circuit, charge contactor, voltage and temperature acquisition integrated line module and current sensor, total positive circuit divide into two branches, one the branch passes through the discharge contactor and connects discharge positive circuit, another the branch passes through the charge contactor and connects charge positive circuit, current sensor one end is connected total positive circuit, and main control unit is connected to the other end, and main control unit is connected respectively to charge contactor and discharge contactor, and voltage and temperature acquisition integrated line module connect main control unit. The device reduces the connecting line between the battery protection device and the storage battery, and more effectively protects the storage battery from phenomena of overvoltage, undervoltage, overcurrent, short circuit and overtemperature in the process of simultaneously charging and discharging.
However, the storage battery pack charge-discharge protection device in the prior art scheme has single functionality, when the storage battery fails, the failed storage battery cannot be cut off, the use of the whole storage battery pack is further affected, the practicability of the device is reduced, in addition, the existing parallel storage battery pack charge-discharge protection device only protects the charging, the use of the load is directly affected by the stability of the current during discharging, and the protection effect of the device is reduced. The following problems exist:
1. the existing parallel storage battery charge-discharge protection device is single in functionality, when a storage battery fails, the failed storage battery cannot be cut off, the use of the whole storage battery is further affected, and the practicality of the device is reduced.
2. The existing parallel storage battery pack charge-discharge protection device only protects during charging, and the stability of current during discharging directly influences the use of a load, so that the protection effect of the device is reduced.
Based on this, the embodiment of the utility model provides a charge-discharge device of a parallel storage battery pack to solve the above problems.
Referring to fig. 1 to 3, fig. 1 is a perspective view showing an embodiment of a charging and discharging device for a parallel battery pack according to the present utility model. The charge-discharge device of the parallel storage battery pack comprises: a device body 2 for accommodating a plurality of storage batteries, wherein a charge-discharge circuit is also arranged in the device body 2; each storage battery 11 (only one storage battery is schematically indicated in the embodiment of the present utility model) is electrically connected to the charging and discharging circuit, and a relay protector 9 (only one relay protector is schematically indicated in the embodiment of the present utility model) is correspondingly disposed between each storage battery 11 and the charging and discharging circuit, where the relay protector 9 is used for cutting off the connection between the storage battery 11 and the charging and discharging circuit when charging or discharging is abnormal. According to the charging and discharging device of the parallel storage battery pack, the relay protector is arranged between each storage battery and the charging and discharging circuit correspondingly, and is used for cutting off the connection between the storage battery and the charging and discharging circuit when the charging or discharging is abnormal, so that the storage battery and the charging and discharging circuit can be detected in real time, and when the storage battery or the charging and discharging circuit has faults, the storage battery can be immediately cut off from the charging and discharging circuit of the whole storage battery pack body, the use of the whole storage battery pack body is not affected, and the practicability of the charging and discharging device is improved. In the embodiment of the present utility model, each storage battery 11 may correspond to at least one relay protector 9, where the relay protector 9 is configured to detect one or more of voltage, current, frequency, power, impedance, harmonic, differential and other electric quantities in the charging and discharging process, so as to determine whether a short circuit or an abnormality occurs in the storage battery 11 or other elements in the charging and discharging circuit, so that connection between the storage battery 11 and the charging and discharging circuit is cut off during the abnormality. If the relay protector 9 detects that the current or voltage of the storage battery 11 exceeds or falls below a preset threshold value when the storage battery 11 is in fault during discharging, the connection between the storage battery 11 and the charge-discharge circuit is disconnected, so that other elements and loads in the charge-discharge circuit can be protected. In addition, for example, when the storage battery 11 is charged, the connection between the battery 11 and the charge/discharge circuit is disconnected due to the abnormal current or voltage in the charge/discharge circuit, so that the storage battery 11 can be protected. And because each storage battery 11 is connected with at least one relay protector 9, when a certain storage battery 11 fails, the connection with a charge and discharge circuit can be cut off through the relay protector 9 corresponding to the storage battery 11, so that the charge and discharge device of the whole parallel storage battery pack is not affected.
As shown in fig. 2, in the embodiment of the present utility model, the charge and discharge circuit includes an upper connection pad 7 and a lower connection pad 8. The upper connecting piece 7 is arranged above the relay protector 9 and the storage batteries 11, and the lower connecting piece 8 is arranged below the storage batteries 11. One end of the relay protector 9 is connected with the upper connecting sheet 7, and the other end of the relay protector 9 is connected with the corresponding first electrode of the storage battery 11; a second electrode of the battery 11 is electrically connected to the lower connecting piece 10. One end of the relay protector 9 is connected with the first surface of the upper connecting sheet 7 through welding.
The charging and discharging circuit comprises a charging port 13 arranged on the charging and discharging device, wherein an opening of the charging port 13 is used for being connected with a charging power supply and transmitting electric quantity of the charging power supply to each storage battery 11 so as to charge the storage batteries 11. The first end of the charging port 13 is connected with the upper connecting sheet 7, and the other end of the charging port 13 is connected with the lower connecting sheet 8. The charging port 13, the upper connecting piece 7, the lower connecting piece 8, the relay protector 9 and the storage battery 11 can form a charging loop. In the embodiment of the utility model, the thermosensitive element 5 is also arranged at the charging port 13. The thermal element 5 is electrically connected with the charging port 13, and is arranged between the upper connecting sheet 7 and the first end of the charging port, one end of the charging port 13 is connected with one end of the thermal element 5, the other end of the thermal element 5 is connected with the upper connecting sheet 7, the thermal element 5 is used for detecting the temperature of the charging port 13, and when the temperature of the charging port 13 is greater than a preset threshold value, the connection between the charging port 13 and the upper connecting sheet 7 in the charging and discharging circuit is disconnected. The charging port 13 is formed on the left side wall of the device body 2, and the charging port 13 may be an interface of USB type or the like, which is not particularly limited in the embodiment of the present utility model. The thermosensitive element 5 may be a self-restoring fuse, a fuse, or the like.
The charge-discharge circuit further comprises a voltage stabilizing module 12, and the voltage stabilizing module 12 can be arranged between the thermosensitive element 5 and the upper connecting sheet 7. One end of the voltage stabilizing module 12 is connected with the charging port 13 through the thermosensitive element 5, and is used for stabilizing the charging voltage input by the charging port 13, and the voltage stabilizing module 12 can ensure the stability of the charging voltage during charging. The other end of the voltage stabilizing module 12 can be connected with the left end part of the upper connecting sheet 7 through the guide sheet 6. In this embodiment of the present utility model, the charge-discharge circuit further includes a charge voltage detection module 4, where the charge voltage detection module 4 is disposed between the upper connection piece 7 and the lower connection piece 9, and is configured to detect a charge voltage, and disconnect the connection between the charge port 13 and each of the storage batteries 11 when the charge voltage exceeds a preset charge threshold. The charging voltage detection module 4 can automatically cut off the charging and discharging circuit when the battery pack is fully charged, so as to prevent the battery pack from being overcharged. The embodiment of the utility model further comprises an alarm, and the thermosensitive element 5 can also be a temperature sensor for sending a signal to the alarm for alarming when the temperature is greater than a preset temperature threshold value.
In the embodiment of the present utility model, the charge-discharge circuit further includes a discharge port 3 disposed on the device body 2. One end of the discharging port 3 is electrically connected with the storage battery 11, and the other end of the discharging port 3 is connected with a load for charging the load. The discharge port 3 is formed on the right side wall of the device body 2, and the discharge port 3 may be a USB type interface, a TPYE-C type interface, or the like, which is not particularly limited in the embodiment of the present utility model. The charging and discharging circuit further comprises a current stabilizer 8 arranged between the storage batteries 11 and the discharging port 3; the current stabilizer 8 is electrically connected with the discharge port 3 and is used for stabilizing the discharge current. The current stabilizer 8 can ensure the stability of the current when the device discharges, further ensure the service performance of the load and improve the protection effect of the device.
The charge-discharge device of the parallel storage battery pack further comprises a heat dissipation structure, and the heat dissipation structure can be a heat dissipation grid 1. As shown in fig. 1, a plurality of heat dissipation grids 1 are formed on the side wall of the device body 2, and are used for dissipating heat of the storage batteries 11 and the charge-discharge circuits in the device body 2, so that heat generated by the charge-discharge devices during charge and discharge is timely discharged.
When each storage battery 11 is charged, charging current passes through the thermosensitive element 5 and the voltage stabilizing module 12 from the charging port 13, is conducted to the relay protector 9 and the storage battery 11 through the guide sheet 6 and the upper connecting sheet 7, and forms a loop through the storage battery 11 and the lower connecting sheet 8, so that the storage battery 11 is charged, the charging voltage detection module 4 detects charging voltage in real time in the charging process, and the connection between the storage battery 11 and the charging and discharging circuit is disconnected due to abnormal current or voltage in the charging and discharging loop, so that the storage battery 11 can be protected. When each storage battery 11 discharges, the electric energy stored in the storage battery 11 is conducted to the upper connecting sheet 7 and the current stabilizer 8 from the storage battery 11 through the relay protector 9 to the discharge port 3, then a discharge loop is formed by the discharge port 3, the lower connecting sheet 8 and the other pole of the storage battery 11 for charging a load connected with the discharge port 3, when the storage battery 11 has a fault, the relay protector 9 detects that the current or the voltage of the storage battery 11 exceeds or is lower than a preset threshold value, and then the connection between the storage battery 11 and a charging and discharging circuit is disconnected, so that other elements and loads in the charging and discharging circuit can be protected.
According to the embodiment of the utility model, the relay protector is correspondingly arranged between each storage battery and the charging and discharging circuit, and is used for cutting off the connection between the storage battery and the charging and discharging circuit when the charging or discharging is abnormal, so that the storage battery and the charging and discharging circuit can be detected in real time, and when the storage battery or the charging and discharging circuit has faults, the storage battery can be immediately cut off from the charging and discharging circuit of the whole storage battery body, the use of the whole storage battery body is not influenced, and the practicability of the device is improved. Further, through setting up the current stabilizer, the current stabilizer can guarantee the stationarity of electric current when the device discharges, and then guarantees the performance of load, improves the device protection effect.
The embodiment of the utility model also provides a parallel storage battery pack device, which comprises: the charge and discharge device of the parallel storage battery pack in the above embodiment, and a plurality of storage batteries arranged in the charge and discharge device, wherein the plurality of storage batteries are connected in parallel to supply power to a load.
It should be noted that unless otherwise indicated, technical or scientific terms used in the embodiments of the present utility model should be given the ordinary meanings as understood by those skilled in the art to which the embodiments of the present utility model belong.
In the description of the novel embodiment, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. refer to the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the embodiment of the present utility model and for simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiment of the present utility model.
Furthermore, the technical terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more unless explicitly defined otherwise.
In the description of the novel embodiments, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or be integrated; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.
In the description of the novel embodiments, unless explicitly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intermediary. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present utility model is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (10)
1. A charge and discharge device for a parallel battery pack, the charge and discharge device comprising: the device comprises a device body for accommodating a plurality of storage batteries, wherein a charging and discharging circuit is also arranged in the device body; each storage battery is electrically connected with the charging and discharging circuit respectively, a relay protector is correspondingly arranged between each storage battery and the charging and discharging circuit, and the relay protector is used for cutting off the connection between the storage battery and the charging and discharging circuit when the charging or discharging is abnormal.
2. The charge and discharge device of claim 1, wherein the charge and discharge circuit comprises an upper connecting piece and a lower connecting piece; one end of the relay protector is connected with the upper connecting sheet, and the other end of the relay protector is connected with the first electrode of the storage battery; the second electrode of the storage battery is electrically connected with the lower connecting sheet.
3. The charge and discharge device according to claim 2, wherein the charge and discharge circuit includes a charge port and a thermosensitive element provided on the charge and discharge device; the thermosensitive element is electrically connected with the charging port and is used for disconnecting the charging port from the charging and discharging circuit when the temperature of the charging port is greater than a preset threshold value.
4. The charge and discharge device of claim 3, wherein the charge and discharge circuit further comprises a voltage stabilizing module electrically connected to the charge port and the upper connecting piece, respectively, for stabilizing the charge voltage input from the charge port.
5. The charge and discharge device of claim 3, wherein the charge and discharge circuit further comprises a charge voltage detection module disposed between the upper and lower connection tabs for detecting a charge voltage and disconnecting the charge port from the battery when the charge voltage exceeds a preset charge threshold.
6. A charge and discharge apparatus according to claim 3, wherein one end of the charge port is electrically connected to the other end of the upper connecting piece through a thermosensitive element; the other end of the charging port is electrically connected with the other end of the lower connecting sheet.
7. The charge-discharge device according to claim 1, wherein the charge-discharge circuit further comprises a discharge port provided on the device body; one end of the discharging port is electrically connected with the storage battery; the other end of the discharging port is connected with a load and used for charging the load.
8. The charge-discharge device of claim 7, wherein the charge-discharge circuit further comprises a current stabilizer disposed between the battery and the discharge port; the current stabilizer is electrically connected with the discharge port and is used for stabilizing the discharge current.
9. The charge and discharge device according to any one of claims 1 to 8, wherein a plurality of heat dissipation grids for dissipating heat from the respective secondary batteries in the device body are formed on a side wall of the device body.
10. A parallel battery pack apparatus, the parallel battery pack apparatus comprising: the charge-discharge device of a parallel battery pack according to any one of claims 1 to 9, and a plurality of secondary batteries provided in the charge-discharge device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222997919.5U CN219458688U (en) | 2022-11-10 | 2022-11-10 | Charging and discharging device of parallel storage battery pack and parallel storage battery pack equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222997919.5U CN219458688U (en) | 2022-11-10 | 2022-11-10 | Charging and discharging device of parallel storage battery pack and parallel storage battery pack equipment |
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| Publication Number | Publication Date |
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| CN219458688U true CN219458688U (en) | 2023-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222997919.5U Active CN219458688U (en) | 2022-11-10 | 2022-11-10 | Charging and discharging device of parallel storage battery pack and parallel storage battery pack equipment |
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| Country | Link |
|---|---|
| CN (1) | CN219458688U (en) |
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- 2022-11-10 CN CN202222997919.5U patent/CN219458688U/en active Active
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