CN219513817U - Anti-feeding protector for accumulator - Google Patents
Anti-feeding protector for accumulator Download PDFInfo
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- CN219513817U CN219513817U CN202320344039.XU CN202320344039U CN219513817U CN 219513817 U CN219513817 U CN 219513817U CN 202320344039 U CN202320344039 U CN 202320344039U CN 219513817 U CN219513817 U CN 219513817U
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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
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Abstract
The utility model discloses a storage battery feed-preventing protection device, which is characterized in that a main power switch is arranged between a storage battery anode and an equipment electrical cabinet wiring terminal, the protection device is arranged between the main power switch and the electrical cabinet wiring terminal, the protection device comprises a main circuit and a control circuit, the main circuit is connected with the main power switch and the electrical cabinet wiring terminal in series, the main circuit comprises an electromagnetic control switch, and the control circuit comprises a voltage acquisition functional block, a switch control functional block and a feed-state standby energy starting functional block which are electrically connected with each other; the voltage acquisition functional block acquires the voltage of the storage battery, and the switch control functional block controls the electromagnetic control switch according to the acquired voltage; when the voltage value of the storage battery is lower than the set protection voltage critical value, the switch control function block controls the electromagnetic control switch to be opened, and when the voltage value of the storage battery is higher than the set working voltage critical value, the switch control function block controls the electromagnetic control switch to be closed. The protection device can automatically disconnect the power supply loop of the storage battery when the storage battery is excessively discharged, and manual disconnection is not needed.
Description
Technical Field
The utility model relates to the technical field of power storage protection, in particular to a power storage battery power supply preventing protection device.
Background
Some devices powered by a storage battery, such as a track engineering vehicle, are on the market, a driver often forgets to turn off a main power switch after returning the track engineering vehicle to a garage, and power consumption of the storage battery is continuously carried out by power consumption equipment which is not turned off on the vehicle, so that the storage battery is overdischarged. When the subsequent track engineering vehicle driver starts the engine again, the engine cannot be started due to the feeding of the storage battery.
Therefore, most of the prior devices do not perform discharge protection on the storage battery, and only the device operator can actively disconnect the power switch to protect the storage battery from discharging after the construction of the device is finished, but manual operation always has careless mistakes, and the percentage cut-off rate of the power switch cannot be ensured.
The patent with the publication number of CN211018311U discloses a storage battery overdischarge cell system, which is shown in the attached figure 3 of the specification and comprises a rectifying module, a protector, a storage battery pack and electric equipment; the input end of the rectifying module is connected with the mains supply, and the output end of the rectifying module is electrically connected with the input end of the protector; the output end of the protector is electrically connected with the electric equipment; the protector is electrically connected with the storage battery pack to finish the charging and discharging process of the storage battery pack. The storage battery overdischarge cell system outputs-48V voltage, and can be applied to a 10V-50V power supply system; the system can completely and autonomously detect and intervene the electric quantity in the storage battery process, ensure that the storage battery keeps a state with sufficient electric quantity and avoid failure.
Although the above patent also mentions the protection against the discharge of the storage battery, the technical scheme mainly relates to the automatic detection and intervention, and monitors the charge and discharge of the storage battery to keep the storage battery in a sufficient electric quantity state, for most of the devices on the market at present, how to avoid the continuous consumption of electric energy when the storage battery forgets to power the main switch under the condition that the main switch of the power supply is still required to be manually and actively closed is a problem to be solved.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide the storage battery anti-feeding protection device capable of timely and effectively performing discharge protection.
The utility model aims at realizing the following technical scheme:
the storage battery anti-feeding protection device comprises a main circuit and a control circuit, wherein the main circuit is connected with the main power switch and the power supply wiring terminal in series, the main circuit comprises an electromagnetic control switch, and the control circuit comprises a voltage acquisition functional block, a switch control functional block and a feed state standby energy starting functional block which are electrically connected with each other; the voltage acquisition functional block is used for acquiring the voltage of the storage battery, and the switch control functional block controls the electromagnetic control switch according to the voltage acquired by the voltage acquisition functional block; when the voltage value of the storage battery is lower than a set protection voltage critical value, the switch control function block controls the electromagnetic control switch to be opened, and when the voltage value of the storage battery is higher than a set working voltage critical value, the switch control function block controls the electromagnetic control switch to be closed; and the storage battery feed state standby energy source starting functional block is used for restarting equipment operation after the storage battery is protected and disconnected.
Further, the main circuit further comprises a manual switch connected in parallel with two ends of the electromagnetic control switch, and the manual switch controls the main circuit to be manually switched on or off.
Furthermore, the manual switch adopts an isolating switch and is used when construction maintenance or a storage battery protection device is abnormal.
Further, the control circuit further comprises a display function block, wherein the display function block is used for displaying the voltage state of the storage battery and the working state of the protection device in real time.
Further, the set protection voltage threshold is 22V, and the set working voltage threshold is 24V.
Further, the storage battery feed state standby energy source starting functional block comprises a click operation button, the click operation button is clicked manually, after the feed state standby energy source starting functional block receives a starting instruction, an electromagnetic control switch is closed within a set time T1, and an operator finishes starting the standby energy source within the time T1.
Further, T1 is 12 to 18s.
Further, when the operator does not complete the start of the standby energy within the time T1, he needs to wait for the set time T2 and then click the click button again.
Furthermore, the storage battery power-supply-preventing protection device is characterized in that T2 is 25-35 s.
Further, the electromagnetic control switch is a relay, and the control circuit controls the on and off of the relay by controlling the power on and power off of a control coil of the relay.
Compared with the prior art, the utility model has the following beneficial effects:
1) When the storage battery is excessively discharged, the power supply loop of the storage battery can be automatically disconnected by the power supply protection device, manual disconnection is not needed, the condition that the service life of the storage battery is reduced or damaged due to the overdischarge of the storage battery caused by human errors is avoided, and meanwhile, the equipment can be normally started when the equipment is used next time;
2) When the standby power supply is required to be started in the feeding state of the storage battery, the anti-feeding protection device can timely disconnect the power supply loop of the storage battery, and prevent the storage battery from being over-discharged continuously.
Drawings
Fig. 1 is a main circuit diagram of a battery power supply system of a rail engineering vehicle according to embodiment 1;
fig. 2 is a schematic diagram of a battery anti-power-supply protection device according to embodiment 1;
fig. 3 is a schematic diagram of a battery overdischarge system according to the related art.
Detailed Description
In order to clearly illustrate the technical characteristics of the present solution, the following detailed description will explain the present solution by means of specific embodiments and with reference to the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than those described herein, and therefore the scope of the present utility model is not limited to the specific embodiments disclosed below.
In addition, in the description of the present utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; 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 present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Example 1
The main circuit diagram of the storage battery power supply system of the track engineering vehicle is shown in figure 1, the negative electrode of the storage battery is grounded, and the positive electrode is connected to the main power supply wiring terminal of the electrical cabinet after passing through the main power supply switch of the track engineering vehicle. The storage battery feed-preventing protection device is connected in series between the manual switch of the main power supply and the wiring terminal of the electrical cabinet shown in fig. 1. As shown in fig. 2; the storage battery feed-preventing protection device is divided into a main circuit and a control circuit, wherein the main circuit is formed by connecting an electromagnetic control switch and a manual switch in parallel, one end of the main circuit is connected with a main power switch, and the other end of the main circuit is connected with a wire inlet terminal of a main power supply of a circuit cabinet; the manual switch adopts an isolating switch and is used when construction maintenance or a storage battery protection device is abnormal. The electromagnetic control switch adopts a relay, and the coil of the relay is controlled by a control circuit.
The control circuit comprises a voltage acquisition functional block, a switch control functional block, a feed state standby energy source starting functional block and a display functional block, wherein the functional blocks are electrically connected to each other to perform interaction of information and control instructions; the display function block is a display panel capable of performing input operation; the voltage acquisition functional block is electrically connected with the storage battery, can acquire the current voltage value of the storage battery in real time and display the current voltage value on the display panel.
The switch control function block outputs DO signals to the coil of the relay according to the voltage value of the storage battery acquired by the voltage acquisition function block, controls the on and off of the relay circuit to turn on or off a main circuit of the storage battery power supply system, and displays the current state of the main circuit on the display panel; in the embodiment, when the voltage of the storage battery is greater than or equal to 24V, the switch control functional block outputs DO signals to energize the coil of the relay, the relay is closed, and the storage battery supplies power to the track engineering vehicle through the main power supply wiring terminal of the electrical cabinet; when the voltage of the storage battery is lower than 22V, the storage battery is in an overdischarge state, and the switch control function block outputs DO signals to disconnect the electricity of the relay coil, so that the relay is disconnected, and the storage battery cannot supply power to the track engineering vehicle, thereby achieving the purposes of preventing the overdischarge of the storage battery and protecting the storage battery; when the voltage of the storage battery is between 22V and 24V, the switch control function block maintains the current state and does not perform reverse operation. If the switch control function block controls the relay to be conducted at the beginning and the storage battery is in a discharging state, when the voltage of the storage battery is reduced to a certain voltage value between 22V and 24V, the switch control function controls the relay to be kept on all the time, and the relay is controlled to be disconnected until the voltage of the storage battery is reduced to 22V or below, so that the over-discharging of the storage battery is avoided; if the switch control function block controls the relay to be disconnected just, the storage battery is in a static state or a charging state, and if the storage battery is in the charging state, when the voltage of the storage battery is charged to a certain voltage value between 22V and 24V, the switch control function controls the relay to be in a disconnected state all the time, and the relay is not controlled to be conducted until the storage battery is charged to 24V or more.
The power supply state standby energy source starting functional block comprises a inching operation button, the inching operation button is arranged on the display panel, and the power supply state standby energy source starting functional block can timely disconnect the relay again when the power supply state of the storage battery fails after disconnecting the relay so as to avoid continuous overdischarge of the storage battery in the power supply state; in this embodiment, the standby energy source is an engine. When the voltage of the storage battery is lower than 22V, after the storage battery feed-preventing protection device opens the relay, if the engine needs to be started, the click operation button can be manually clicked on the display panel, and after the feed-state standby energy starting functional block receives a starting instruction, the control switch control functional block outputs a DO signal to power on a coil of the relay, and the relay is closed within 15 seconds. At the moment, a driver needs to finish starting the engine within 15 seconds, if the driver fails to successfully start the engine within 15 seconds, the feed state standby energy starting functional block controls the switch control functional block to output DO signals to power off the coil of the relay, the relay is disconnected, and the storage battery is prevented from being continuously over-discharged; after the engine fails to start, the operator can continuously click a click operation button on the display panel manually after waiting for 30 seconds, and the operation of starting the engine is performed again (the click operation is invalid within 30 seconds, and the relay cannot be closed again); the click information and the timing information are synchronously displayed on the display panel.
Example 2
The main circuit diagram of the storage battery power supply system of the track engineering vehicle is shown in figure 1, the negative electrode of the storage battery is grounded, and the positive electrode is connected to the main power supply wiring terminal of the electrical cabinet after passing through the main power supply switch of the track engineering vehicle. The storage battery feed-preventing protection device is connected in series between the manual switch of the main power supply and the wiring terminal of the electrical cabinet shown in fig. 1. As shown in fig. 2; the storage battery feed-preventing protection device is divided into a main circuit and a control circuit, wherein the main circuit is formed by connecting an electromagnetic control switch and a manual switch in parallel, one end of the main circuit is connected with a main power switch, and the other end of the main circuit is connected with a wire inlet terminal of a main power supply of a circuit cabinet; the manual switch adopts an isolating switch and is used when construction maintenance or a storage battery protection device is abnormal. The electromagnetic control switch adopts a relay, and the coil of the relay is controlled by a control circuit.
The control circuit comprises a voltage acquisition functional block, a switch control functional block, a feed state standby energy source starting functional block and a display functional block, wherein the functional blocks are electrically connected to each other to perform interaction of information and control instructions; the display function block is a display panel capable of performing input operation; the voltage acquisition functional block is electrically connected with the storage battery, can acquire the current voltage value of the storage battery in real time and display the current voltage value on the display panel.
The switch control function block outputs DO signals to the coil of the relay according to the voltage value of the storage battery acquired by the voltage acquisition function block, controls the on and off of the relay circuit to turn on or off a main circuit of the storage battery power supply system, and displays the current state of the main circuit on the display panel; in the embodiment, when the voltage of the storage battery is greater than or equal to 24V, the switch control functional block outputs DO signals to energize the coil of the relay, the relay is closed, and the storage battery supplies power to the track engineering vehicle through the main power supply wiring terminal of the electrical cabinet; when the voltage of the storage battery is lower than 22V, the storage battery is in an overdischarge state, and the switch control function block outputs DO signals to disconnect the electricity of the relay coil, so that the relay is disconnected, and the storage battery cannot supply power to the track engineering vehicle, thereby achieving the purposes of preventing the overdischarge of the storage battery and protecting the storage battery; when the voltage of the storage battery is between 22V and 24V, the switch control function block maintains the current state and does not perform reverse operation. If the switch control function block controls the relay to be conducted at the beginning and the storage battery is in a discharging state, when the voltage of the storage battery is reduced to a certain voltage value between 22V and 24V, the switch control function controls the relay to be kept on all the time, and the relay is controlled to be disconnected until the voltage of the storage battery is reduced to 22V or below, so that the over-discharging of the storage battery is avoided; if the switch control function block controls the relay to be disconnected just, the storage battery is in a static state or a charging state, and if the storage battery is in the charging state, when the voltage of the storage battery is charged to a certain voltage value between 22V and 24V, the switch control function controls the relay to be in a disconnected state all the time, and the relay is not controlled to be conducted until the storage battery is charged to 24V or more.
The power supply state standby energy source starting functional block comprises a inching operation button, the inching operation button is arranged on the display panel, and the power supply state standby energy source starting functional block can timely disconnect the relay again when the power supply state of the storage battery fails after disconnecting the relay so as to avoid continuous overdischarge of the storage battery in the power supply state; in this embodiment, the standby energy source is an engine. When the voltage of the storage battery is lower than 22V, after the storage battery feed-preventing protection device opens the relay, if the engine needs to be started, the click operation button can be manually clicked on the display panel, and after the feed-state standby energy starting functional block receives a starting instruction, the control switch control functional block outputs a DO signal to power on a coil of the relay, and the relay is closed within 12 seconds. At the moment, a driver needs to finish starting the engine within 12s, if the driver fails to successfully start the engine within 12s, the feed state standby energy starting functional block controls the switch control functional block to output DO signals to power off the coil of the relay, the relay is disconnected, and the storage battery is prevented from being continuously over-discharged; after the engine fails to start, the operator can continuously click a click operation button on the display panel manually after waiting 25 seconds, and the operation of starting the engine is performed again (the click operation is invalid within 25 seconds, and the relay cannot be closed again); the click information and the timing information are synchronously displayed on the display panel.
Example 3
The main circuit diagram of the storage battery power supply system of the track engineering vehicle is shown in figure 1, the negative electrode of the storage battery is grounded, and the positive electrode is connected to the main power supply wiring terminal of the electrical cabinet after passing through the main power supply switch of the track engineering vehicle. The storage battery feed-preventing protection device is connected in series between the manual switch of the main power supply and the wiring terminal of the electrical cabinet shown in fig. 1. As shown in fig. 2; the storage battery feed-preventing protection device is divided into a main circuit and a control circuit, wherein the main circuit is formed by connecting an electromagnetic control switch and a manual switch in parallel, one end of the main circuit is connected with a main power switch, and the other end of the main circuit is connected with a wire inlet terminal of a main power supply of a circuit cabinet; the manual switch adopts an isolating switch and is used when construction maintenance or a storage battery protection device is abnormal. The electromagnetic control switch adopts a relay, and the coil of the relay is controlled by a control circuit.
The control circuit comprises a voltage acquisition functional block, a switch control functional block, a feed state standby energy source starting functional block and a display functional block, wherein the functional blocks are electrically connected to each other to perform interaction of information and control instructions; the display function block is a display panel capable of performing input operation; the voltage acquisition functional block is electrically connected with the storage battery, can acquire the current voltage value of the storage battery in real time and display the current voltage value on the display panel.
The switch control function block outputs DO signals to the coil of the relay according to the voltage value of the storage battery acquired by the voltage acquisition function block, controls the on and off of the relay circuit to turn on or off a main circuit of the storage battery power supply system, and displays the current state of the main circuit on the display panel; in the embodiment, when the voltage of the storage battery is greater than or equal to 24V, the switch control functional block outputs DO signals to energize the coil of the relay, the relay is closed, and the storage battery supplies power to the track engineering vehicle through the main power supply wiring terminal of the electrical cabinet; when the voltage of the storage battery is lower than 22V, the storage battery is in an overdischarge state, and the switch control function block outputs DO signals to disconnect the electricity of the relay coil, so that the relay is disconnected, and the storage battery cannot supply power to the track engineering vehicle, thereby achieving the purposes of preventing the overdischarge of the storage battery and protecting the storage battery; when the voltage of the storage battery is between 22V and 24V, the switch control function block maintains the current state and does not perform reverse operation. If the switch control function block controls the relay to be conducted at the beginning and the storage battery is in a discharging state, when the voltage of the storage battery is reduced to a certain voltage value between 22V and 24V, the switch control function controls the relay to be kept on all the time, and the relay is controlled to be disconnected until the voltage of the storage battery is reduced to 22V or below, so that the over-discharging of the storage battery is avoided; if the switch control function block controls the relay to be disconnected just, the storage battery is in a static state or a charging state, and if the storage battery is in the charging state, when the voltage of the storage battery is charged to a certain voltage value between 22V and 24V, the switch control function controls the relay to be in a disconnected state all the time, and the relay is not controlled to be conducted until the storage battery is charged to 24V or more.
The power supply state standby energy source starting functional block comprises a inching operation button, the inching operation button is arranged on the display panel, and the power supply state standby energy source starting functional block can timely disconnect the relay again when the power supply state of the storage battery fails after disconnecting the relay so as to avoid continuous overdischarge of the storage battery in the power supply state; in this embodiment, the standby energy source is an engine. When the voltage of the storage battery is lower than 22V, after the storage battery feed-preventing protection device opens the relay, if the engine needs to be started, the click operation button can be manually clicked on the display panel, and after the feed-state standby energy starting functional block receives a starting instruction, the control switch control functional block outputs a DO signal to power on a coil of the relay, and the relay is closed within 18 seconds. At the moment, a driver needs to finish starting the engine within 15s, if the driver fails to successfully start the engine within 18s, the feed state standby energy starting functional block controls the switch control functional block to output DO signals to power off the coil of the relay, the relay is disconnected, and the storage battery is prevented from being continuously over-discharged; after the engine fails to start, the operator can continuously click a click operation button on the display panel manually for 35 seconds, and the operation of starting the engine is performed again (the click operation is invalid within 35 seconds, and the relay cannot be closed again); the click information and the timing information are synchronously displayed on the display panel. The linkage action between the standby energy source starting functional block and the inching operation button and switch control functional block in the technical scheme belongs to the conventional operation in the industry.
It is apparent that the above examples are only examples for clearly illustrating the technical solution of the present utility model, and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.
Claims (10)
1. The storage battery anti-feeding protection device is characterized in that the protection device is arranged between the main power switch and the electric cabinet wiring terminal, the protection device comprises a main circuit and a control circuit, the main circuit is connected with the main power switch and the electric cabinet wiring terminal in series, the main circuit comprises an electromagnetic control switch, and the control circuit comprises a voltage acquisition functional block, a switch control functional block and a feed state standby energy starting functional block which are electrically connected with each other; the voltage acquisition functional block is used for acquiring the voltage of the storage battery, and the switch control functional block controls the electromagnetic control switch according to the voltage acquired by the voltage acquisition functional block; when the voltage value of the storage battery is lower than a set protection voltage critical value, the switch control function block controls the electromagnetic control switch to be opened, and when the voltage value of the storage battery is higher than a set working voltage critical value, the switch control function block controls the electromagnetic control switch to be closed; and the storage battery feed state standby energy source starting functional block is used for restarting equipment operation after the storage battery is protected and disconnected.
2. The battery feed prevention protection device of claim 1, wherein the main circuit further comprises a manual switch connected in parallel across the electromagnetic control switch, the manual switch controlling manual on-off of the main circuit.
3. The battery feed-prevention protection device of claim 2, wherein the manual switch employs a disconnecting switch.
4. The battery anti-feed protection device according to claim 1, wherein the control circuit further comprises a display function block for displaying the voltage state of the battery and the operating state of the protection device in real time.
5. The battery anti-power-feeding protection device according to claim 1, wherein the set protection voltage threshold is 22V and the set operation voltage threshold is 24V.
6. The battery feed-preventing protection device according to claim 1, wherein the battery feed-state standby energy source starting functional block comprises a click operation button, the click operation button is clicked manually, after the feed-state standby energy source starting functional block receives the starting instruction, the electromagnetic control switch is closed within a set time T1, and an operator finishes starting the standby energy source within the time T1.
7. The battery power-feed preventing protector according to claim 6, wherein T1 is 12 to 18s.
8. The battery anti-power supply protection device according to claim 6 or 7, wherein the operator does not wait for the set time T2 and then clicks the click button again when the standby power is started within the time T1.
9. The battery power-feeding preventing protector according to claim 8, wherein T2 is 25 to 35s.
10. The battery feed prevention protection device according to claim 1, wherein the electromagnetic control switch is a relay, and the control circuit controls the on and off of the relay by controlling the power on and off of a control coil of the relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320344039.XU CN219513817U (en) | 2023-02-28 | 2023-02-28 | Anti-feeding protector for accumulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320344039.XU CN219513817U (en) | 2023-02-28 | 2023-02-28 | Anti-feeding protector for accumulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219513817U true CN219513817U (en) | 2023-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320344039.XU Active CN219513817U (en) | 2023-02-28 | 2023-02-28 | Anti-feeding protector for accumulator |
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| CN (1) | CN219513817U (en) |
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- 2023-02-28 CN CN202320344039.XU patent/CN219513817U/en active Active
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