CN219287177U - High-power lithium battery protection board - Google Patents
High-power lithium battery protection board Download PDFInfo
- Publication number
- CN219287177U CN219287177U CN202320090182.0U CN202320090182U CN219287177U CN 219287177 U CN219287177 U CN 219287177U CN 202320090182 U CN202320090182 U CN 202320090182U CN 219287177 U CN219287177 U CN 219287177U
- Authority
- CN
- China
- Prior art keywords
- lithium battery
- triode
- circuit
- battery protection
- discharge
- 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
Classifications
-
- 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 utility model discloses a high-power lithium battery protection board, which comprises a switching tube circuit, a lithium battery protection circuit, a discharge driving circuit and a charge driving circuit, wherein the switching tube circuit is arranged on a charge-discharge loop of a lithium battery pack; the lithium battery protection circuit is connected with the lithium battery pack to perform charge and discharge detection on the lithium battery pack; the lithium battery protection circuit is connected with the switching tube circuit through the discharge driving circuit so as to perform discharge driving control on the switching tube circuit under the action of the lithium battery protection circuit; the lithium battery protection circuit is connected with the switching tube circuit through the charging driving circuit so as to perform charging driving control on the switching tube circuit under the action of the lithium battery protection circuit. In this way, when high-power is supplied, the discharging driving circuit and the charging driving circuit can realize the rapid on-off control of the switching circuit on the charging and discharging circuit of the lithium battery pack.
Description
Technical Field
The utility model relates to the technical field of lithium battery protection circuits, in particular to a high-power lithium battery protection board.
Background
Lithium (Li) ion batteries are increasingly used as energy storage and power supply batteries, and in the use process of the lithium (Li) ion batteries, the lithium batteries are generally required to be fully electrically protected by a protection circuit board so as to avoid the phenomenon of overcharge or overdischarge of the lithium batteries in the use process, thereby ensuring the service life of the lithium batteries. The lithium battery protection board mainly detects each lithium battery through the lithium battery detection chip and outputs a control signal to a loop control switch on a lithium battery loop, and when the loop current is relatively large, the signal output by the lithium battery detection chip is difficult to timely conduct or cut off the loop control switch.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems in the related art to some extent. To this end, an object of the present utility model is to provide a high-power lithium battery protection plate.
To achieve the above object, an embodiment of the present utility model provides a high-power lithium battery protection board, including:
the switching tube circuit is arranged on a charge-discharge loop of the lithium battery pack;
the lithium battery protection circuit is connected with the lithium battery pack to perform charge and discharge detection on the lithium battery pack;
the lithium battery protection circuit is connected with the switching tube circuit through the discharge driving circuit so as to perform discharge driving control on the switching tube circuit under the action of the lithium battery protection circuit;
and the lithium battery protection circuit is connected with the switching tube circuit through the charging driving circuit so as to perform charging driving control on the switching tube circuit under the action of the lithium battery protection circuit.
Further, according to an embodiment of the present utility model, the high power lithium battery protection plate further includes: and the voltage reducing circuit is respectively connected with the lithium battery pack, the discharge driving circuit and the charging driving circuit so as to reduce the voltage of a power supply of the lithium battery pack and then supply power for the discharge driving circuit and the charging driving circuit.
Further, according to an embodiment of the present utility model, the discharge driving circuit includes:
the first triode Q3, the collector of the first triode Q3 is connected with a driving power supply, the base of the first triode Q3 is connected with the driving power supply through a first resistor R8 and a second resistor R7, the emitter of the first triode Q3 is connected with the discharge control end of the switching tube circuit, and the emitter of the first triode Q3 is also connected with the negative end of the lithium battery pack through a third resistor R101;
one end of the fourth resistor R99 is connected with the base electrode of the first triode Q3, and the other end of the fourth resistor R99 is also connected with the reference ground;
the base electrode of the first triode Q3 is used for conducting or cutting off under the effect of a discharge control signal output by the lithium battery protection circuit.
Further, according to an embodiment of the present utility model, the discharge driving circuit further includes:
the second triode Q7, second triode Q7's collecting electrode with first triode Q3's base is connected, second triode Q7's projecting pole is connected with reference ground, second triode Q7's base still through fifth resistance R100 with lithium cell protection circuit output's discharge control signal output is connected, second triode Q7's base still is connected with reference ground through sixth resistance R15.
Further, according to an embodiment of the present utility model, the discharge driving circuit further includes:
and the collector of the third triode Q4 is connected with the base electrode of the first triode Q3, the emitter of the third triode Q4 is connected with the reference ground, the base electrode of the third triode Q4 is also connected with the discharge current detection end through a seventh resistor R10, and the base electrode of the third triode Q4 is also connected with the reference ground through an eighth resistor R11.
Further, according to an embodiment of the present utility model, the charge driving circuit includes:
and a base electrode of the fourth triode Q8 is connected with a charging control signal output end of the lithium battery protection circuit, an emitter electrode of the fourth triode Q8 is connected with the reference ground, a collector electrode of the fourth triode Q8 is connected with a charging control end of the switching tube circuit through a ninth resistor RM1-6, and the collector electrode of the fourth triode Q8 is also connected with a driving power supply.
Further, according to an embodiment of the present utility model, the charging driving circuit further includes:
the base electrode of the fourth triode Q8 is connected with the charging control signal output end of the lithium battery protection circuit through the first diode ZD 5; the anode of the first diode ZD5 is connected with the charging control signal output end of the lithium battery protection circuit, and the cathode of the first diode ZD5 is connected with the base electrode of the fourth triode Q8;
the collector of the fourth triode Q8 is connected with the driving power supply through a tenth resistor R3 and the second diode ZD 4; the collector of the fourth triode Q8 is connected with one end of the tenth resistor R3, the other end of the tenth resistor R3 is connected with the cathode of the second diode ZD4, and the anode of the second diode ZD4 is connected with the driving power supply.
Further, according to an embodiment of the present utility model, the charging driving circuit further includes:
and a voltage stabilizing diode ZD8, wherein the cathode of the voltage stabilizing diode ZD8 is connected with the collector of the fourth triode Q8, and the anode of the voltage stabilizing diode ZD8 is connected with the reference ground.
Further, according to an embodiment of the present utility model, the switching tube circuit includes:
the source electrode of the first MOS tube M11-16 is connected with the negative end of the lithium battery pack, and the grid electrode of the first MOS tube M11-16 is connected with the discharge control signal output end of the discharge driving circuit;
the drain electrode of the second MOS tube M1-6 is connected with the drain electrode of the first MOS tube M11-16, the source electrode of the second MOS tube M1-6 is connected with the negative output end of charge and discharge, and the grid electrode of the second MOS tube M1-6 is connected with the charge control signal output end of the charge driving circuit.
Further, according to an embodiment of the present utility model, the lithium battery protection circuit includes:
the lithium battery protection chips are respectively provided with a plurality of lithium battery protection chips, each lithium battery protection chip is sequentially connected, and each lithium battery protection chip is respectively connected with one lithium battery so as to carry out overcharge and overdischarge detection on each lithium battery of the lithium battery pack.
The high-power lithium battery protection board provided by the embodiment of the utility model is arranged on a charge-discharge loop of a lithium battery pack through a switching tube circuit; the lithium battery protection circuit is connected with the lithium battery pack to perform charge and discharge detection on the lithium battery pack; the lithium battery protection circuit is connected with the switching tube circuit through the discharge driving circuit so as to perform discharge driving control on the switching tube circuit under the action of the lithium battery protection circuit; the lithium battery protection circuit is connected with the switching tube circuit through the charging driving circuit so as to perform charging driving control on the switching tube circuit under the action of the lithium battery protection circuit. In this way, when high-power is supplied, the discharging driving circuit and the charging driving circuit can realize the rapid on-off control of the switching circuit on the charging and discharging circuit of the lithium battery pack.
Drawings
FIG. 1 is a block diagram of a high-power lithium battery protection board according to an embodiment of the present utility model;
fig. 2 is a schematic diagram of a lithium battery protection circuit according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram of a discharge driving circuit according to an embodiment of the present utility model;
fig. 4 is a schematic diagram of a structure of a charging driving circuit and a switch tube protection circuit according to an embodiment of the present utility model;
fig. 5 is a schematic diagram of a step-down circuit according to an embodiment of the present utility model.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
In order to enable those skilled in the art to better understand the present utility model, the following description will make clear and complete descriptions of the technical solutions according to the embodiments of the present utility model with reference to the accompanying drawings. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
Referring to fig. 1, an embodiment of the present utility model provides a high-power lithium battery protection plate, including: the lithium battery pack comprises a switching tube circuit, a lithium battery protection circuit, a discharge driving circuit and a charging driving circuit, wherein the switching tube circuit is arranged on a charge-discharge loop of the lithium battery pack; specifically, as shown in fig. 4, the switching tube circuit includes: the lithium battery pack comprises a first MOS tube M11-16 and a second MOS tube M1-6, wherein the source electrode of the first MOS tube M11-16 is connected with the negative end of the lithium battery pack, and the grid electrode of the first MOS tube M11-16 is connected with a discharge control signal output end DOV of the discharge driving circuit; the first MOS transistors M11-16 may be turned on or off under the effect of the discharge control signal of the discharge driving circuit, so as to realize discharge or stop discharge control of the lithium battery pack, for example, when the discharge control signal output end DOV is at a high level, the first MOS transistors M11-16 are turned on, the lithium battery pack may discharge to the outside through the first MOS transistors M11-16, and conversely, when the first MOS transistors M11-16 are turned off, the lithium battery pack stops discharging to the outside.
The drain electrode of the second MOS tube M1-6 is connected with the drain electrode of the first MOS tube M11-16, the source electrode of the second MOS tube M1-6 is connected with the negative end of the charge and discharge output, and the grid electrode of the second MOS tube M1-6 is connected with the charge control signal output end of the charge driving circuit. The second MOS transistor M1-6 may be turned on or off under the effect of the charging control signal of the charging driving circuit, so as to implement charging or stopping charging control of the lithium battery pack, for example, when the discharging control signal CO is at a high level, the second MOS transistor M1-6 is turned on, the charging power source may charge the lithium battery pack through the second MOS transistor M1-6, and conversely, when the second MOS transistor M1-6 is turned off, the charging power source stops charging the lithium battery.
The lithium battery protection circuit is connected with the lithium battery pack to perform charge and discharge detection on the lithium battery pack; specifically, as shown in fig. 2, the lithium battery protection circuit includes: lithium battery protection chips (U2-U20), lithium battery protection chips are respectively provided with a plurality of (U2-U20), each lithium battery protection chip is connected in sequence, and each lithium battery protection chip is respectively connected with one lithium battery so as to carry out overcharge and overdischarge detection on each lithium battery of the lithium battery pack. Therefore, the charging and discharging voltage detection of each lithium battery of the lithium battery pack can be realized through the plurality of lithium battery protection chips (U2-U20). And the overcharge and overdischarge signal detection ends DO and CO output an overcharge detection signal CO or an overdischarge detection signal DO, and cut-off control is carried out on the first MOS tube M11-16 and the second MOS tube M1-6, so that overcharge and overdischarge detection is realized.
The lithium battery protection circuit is connected with the switching tube circuit through the discharge driving circuit so as to perform discharge driving control on the switching tube circuit under the action of the lithium battery protection circuit; the lithium battery protection circuit is connected with the switching tube circuit through the charging driving circuit so as to perform charging driving control on the switching tube circuit under the action of the lithium battery protection circuit. Because the drive current of the overcharge and overdischarge signal detection ends DO and CO output by the lithium battery protection chip (U2-U20) is relatively smaller, in the high-power lithium battery protection board, the first MOS tube M11-16 and the second MOS tube M1-6 of the switch tube circuit are difficult to drive to be rapidly conducted or cut off, and in order to rapidly drive the first MOS tube M11-16 and the second MOS tube M1-6 of the switch tube circuit to be conducted or cut off, the overcharge and overdischarge signal detection ends DO and CO output by the lithium battery protection circuit or the overdischarge detection signal DO can be output to the first MOS tube M11-16 and the second MOS tube M1-6 after power amplification is carried out by the discharge drive circuit and the charge drive circuit, so that the switch tube circuit is rapidly conducted or cut off under a high-power working state.
The high-power lithium battery protection board provided by the embodiment of the utility model is arranged on a charge-discharge loop of a lithium battery pack through a switching tube circuit; the lithium battery protection circuit is connected with the lithium battery pack to perform charge and discharge detection on the lithium battery pack; the lithium battery protection circuit is connected with the switching tube circuit through the discharge driving circuit so as to perform discharge driving control on the switching tube circuit under the action of the lithium battery protection circuit; the lithium battery protection circuit is connected with the switching tube circuit through the charging driving circuit so as to perform charging driving control on the switching tube circuit under the action of the lithium battery protection circuit. In this way, when high-power is supplied, the discharging driving circuit and the charging driving circuit can realize the rapid on-off control of the switching circuit on the charging and discharging circuit of the lithium battery pack.
More specifically, referring to fig. 3, the discharge driving circuit includes: the lithium battery pack comprises a first triode Q3, a triode Q9 and a fourth resistor R99, wherein the collector electrode of the first triode Q3 is connected with a driving power supply V15V, the base electrode of the first triode Q3 is connected with the driving power supply V15V through a first resistor R8 and a second resistor R7, the emitter electrode of the first triode Q3 is connected with the discharge control end of the switching tube circuit, and the emitter electrode of the first triode Q3 is also connected with the negative end of the lithium battery pack through a third resistor R101; the base electrode of the triode Q9 is connected with the emitter electrode of the first triode Q3, the emitter electrode of the triode Q9 is connected with the reference ground, and the collector electrode of the triode Q9 is also connected with the base electrode of the first triode Q3; one end of the fourth resistor R99 is connected with the base electrode of the first triode Q3, and the other end of the fourth resistor R99 is also connected with the reference ground; the base electrode of the first triode Q3 is used for conducting or cutting off under the effect of a discharge control signal output by the lithium battery protection circuit. As shown in fig. 3, the driving power V15V may provide a conductive power to the first transistor Q3 through the first resistor R8 and the second resistor R7, and the conductive power flows from the base to the emitter of the first transistor Q3, and flows from the third resistor R101 to the negative terminal of the lithium battery. At this time, the first transistor Q3 is turned on, and the discharge switch tube first MOS tube M11-16 is turned on by the high level signal of the DOV to the discharge switch tube first MOS tube M11-16. When the discharge control signal DO output by the lithium battery protection circuit enables the first triode Q3 to be cut off, the on current of the first MOS tube M11-16 of the discharge switch tube can be rapidly released through the triode Q9, and the first MOS tube M11-16 of the discharge switch tube can be rapidly cut off.
Referring to fig. 3, the discharge driving circuit further includes: the second triode Q7, second triode Q7's collecting electrode with first triode Q3's base is connected, second triode Q7's projecting pole is connected with reference ground, second triode Q7's base still through fifth resistance R100 with lithium cell protection circuit output's discharge control signal output is connected, second triode Q7's base still is connected with reference ground through sixth resistance R15.
Specifically, the lithium battery protection circuit outputs a discharge control signal through the DO end, when the battery is overdischarged, in order to protect the lithium battery pack from overdischarge, the lithium battery protection circuit outputs a high-level discharge control signal through the DO end, the high-level discharge signal can enable the second triode Q7 to be conducted, and after the second triode Q7 is conducted, the base electrode of the first triode Q3 is enabled to be converted from a high level to a low level state. At this time, the first transistor Q3 is switched from an on state to an off state, and the DOV signal is switched from a high level to a low level, so that the first MOS transistors M11-16 of the discharge switch tube are turned off.
Referring to fig. 3 and 4, the discharge driving circuit further includes: and the collector of the third triode Q4 is connected with the base electrode of the first triode Q3, the emitter of the third triode Q4 is connected with the reference ground, the base electrode of the third triode Q4 is also connected with the discharge current detection end through a seventh resistor R10, and the base electrode of the third triode Q4 is also connected with the reference ground through an eighth resistor R11. As shown in fig. 4, a current detection resistor RL1-9 is disposed on a charge-discharge loop of the lithium battery pack, and the current on the discharge loop can be detected by the current detection resistor RL1-9 and output to the base electrode of the third triode Q4 through a P-signal terminal. Specifically, after the P-signal is divided by the seventh resistor R10, the resistor R9, and the eighth resistor R11, the P-signal is output to the base electrode of the third triode Q4, and when the discharge loop is over-current, the P-signal can make the third triode Q4 be turned on, so that the base electrode of the first triode Q3 is converted from high level to low level. At this time, the first transistor Q3 is switched from an on state to an off state, and the DOV signal is switched from a high level to a low level, so that the first MOS transistors M11-16 of the discharge switch tube are turned off. And the discharge overcurrent protection of the lithium battery pack is realized.
Referring to fig. 4, the charge driving circuit includes: and a base electrode of the fourth triode Q8 is connected with a charging control signal output end CO of the lithium battery protection circuit, an emitter electrode of the fourth triode Q8 is connected with the reference ground, a collector electrode of the fourth triode Q8 is connected with a charging control end of the switching tube circuit through a ninth resistor RM1-6, and the collector electrode of the fourth triode Q8 is also connected with a driving power supply. As shown in fig. 4, the base electrode of the fourth triode Q8 is connected with the lithium battery protection circuit through a charging control signal CO, when the lithium battery protection circuit detects that the lithium battery pack is overcharged, the charging control signal CO is outputted at a high level, so that the fourth triode Q8 is turned on, and the gate electrode of the charging switch tube M1-6 is pulled down, so that the charging switch tube M1-6 is turned off, and the lithium battery is charged and protected. During normal charging, the charging control signal CO is in a low level or high resistance state, so that the fourth triode Q8 is cut off, and the grid electrode of the charging switch tube M1-6 is in a conducting state under the action of the driving power supply V15V, so that the lithium battery pack can be charged normally.
Referring to fig. 4, the charging driving circuit further includes: the base electrode of the fourth triode Q8 is connected with the charging control signal output end of the lithium battery protection circuit through the first diode ZD 5; the anode of the first diode ZD5 is connected with the charging control signal output end of the lithium battery protection circuit, and the cathode of the first diode ZD5 is connected with the base electrode of the fourth triode Q8; the collector of the fourth triode Q8 is connected with the driving power supply through a tenth resistor R3 and the second diode ZD 4; the collector of the fourth triode Q8 is connected with one end of the tenth resistor R3, the other end of the tenth resistor R3 is connected with the cathode of the second diode ZD4, and the anode of the second diode ZD4 is connected with the driving power supply.
Specifically, through the unidirectional conductivity of the first diode ZD5 and the second diode ZD4, current feedback can be avoided, and in a state that the charge-discharge loop of the lithium battery works in a large current, the lithium battery protection circuit and the driving power supply can be protected through the first diode ZD5 and the second diode ZD 4.
Referring to fig. 4, the charging driving circuit further includes: and a voltage stabilizing diode ZD8, wherein the cathode of the voltage stabilizing diode ZD8 is connected with the collector of the fourth triode Q8, and the anode of the voltage stabilizing diode ZD8 is connected with the reference ground. The zener diode ZD8 is arranged between the grid electrode and the source electrode of the first discharge switch tube M11-16, so that the zener diode ZD8 can be protected, and the first discharge switch tube M11-16 is prevented from being damaged by a pulse high-voltage signal.
Referring to fig. 1 and 5, the high-power lithium battery protection plate further includes: and the voltage reducing circuit is respectively connected with the lithium battery pack, the discharge driving circuit and the charging driving circuit so as to reduce the voltage of a power supply of the lithium battery pack and then supply power for the discharge driving circuit and the charging driving circuit. As shown in fig. 5, the voltage-reducing circuit converts the voltage of the output power supply b+ of the lithium battery pack into a 15V driving power supply, so as to provide the driving power supply for the discharge driving circuit and the charge driving circuit. As shown in fig. 5, the voltage reducing circuit includes a triode Q1, a triode Q2, a zener diode ZD3 and a zener diode ZD2, wherein the triode Q1, the triode Q2 and the zener diode ZD3 form a linear voltage reducing circuit to convert a power supply output by the lithium battery pack into a 15-drive power supply, and the zener diode ZD2 is arranged at an output end of the voltage reducing circuit to stabilize and protect an output power supply of the voltage reducing circuit.
Although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that the present utility model may be modified or equivalents substituted for some of the features thereof. All equivalent structures made by the content of the specification and the drawings of the utility model are directly or indirectly applied to other related technical fields, and are also within the scope of the utility model.
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 do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations may be made in the above embodiments by those skilled in the art without departing from the spirit and principles of the utility model.
Claims (8)
1. A high power lithium battery protection plate, comprising:
the switching tube circuit is arranged on a charge-discharge loop of the lithium battery pack;
the lithium battery protection circuit is connected with the lithium battery pack to perform charge and discharge detection on the lithium battery pack;
the lithium battery protection circuit is connected with the switching tube circuit through the discharge driving circuit so as to perform discharge driving control on the switching tube circuit under the action of the lithium battery protection circuit;
the lithium battery protection circuit is connected with the switching tube circuit through the charging driving circuit so as to perform charging driving control on the switching tube circuit under the action of the lithium battery protection circuit;
wherein, the liquid crystal display device comprises a liquid crystal display device,
the discharge driving circuit includes:
the lithium battery pack comprises a first triode (Q3), wherein a collector electrode of the first triode (Q3) is connected with a driving power supply, a base electrode of the first triode (Q3) is connected with the driving power supply through a first resistor (R8) and a second resistor (R7), an emitting electrode of the first triode (Q3) is connected with a discharge control end of the switching tube circuit, and an emitting electrode of the first triode (Q3) is also connected with a negative end of the lithium battery pack through a third resistor (R101);
one end of the fourth resistor (R99) is connected with the base electrode of the first triode (Q3), and the other end of the fourth resistor (R99) is also connected with the reference ground;
the base electrode of the first triode (Q3) is used for conducting or cutting off under the effect of a discharge control signal output by the lithium battery protection circuit;
the lithium battery protection circuit comprises a first triode (Q3), a second triode (Q7), a third resistor (R100) and a fourth resistor (R15), wherein the collector of the first triode (Q3) is connected with the base of the second triode (Q7), the emitter of the second triode (Q7) is connected with the reference ground, the base of the second triode (Q7) is also connected with the discharge control signal output end of the lithium battery protection circuit through the fifth resistor (R100), and the base of the second triode (Q7) is also connected with the reference ground through the sixth resistor (R15).
2. The high power lithium battery protection plate of claim 1, further comprising: and the voltage reducing circuit is respectively connected with the lithium battery pack, the discharge driving circuit and the charging driving circuit so as to reduce the voltage of a power supply of the lithium battery pack and then supply power for the discharge driving circuit and the charging driving circuit.
3. The high power lithium battery protection plate of claim 1, wherein the discharge driving circuit further comprises:
the base of the third triode (Q4) is further connected with a discharge current detection end through a seventh resistor (R10), and the base of the third triode (Q4) is further connected with the reference ground through an eighth resistor (R11).
4. The high power lithium battery protection plate of claim 1, wherein the charge driving circuit comprises:
and the base electrode of the fourth triode (Q8) is connected with the charging control signal output end of the lithium battery protection circuit, the emitter electrode of the fourth triode (Q8) is connected with the reference ground, the collector electrode of the fourth triode (Q8) is connected with the charging control end of the switching tube circuit through a ninth resistor (RM 1-6), and the collector electrode of the fourth triode (Q8) is also connected with the driving power supply.
5. The high power lithium battery protection plate of claim 4, wherein the charge driving circuit further comprises:
the base electrode of the fourth triode (Q8) is connected with the charging control signal output end of the lithium battery protection circuit through the first diode (ZD 5); the anode of the first diode (ZD 5) is connected with the charging control signal output end of the lithium battery protection circuit, and the cathode of the first diode (ZD 5) is connected with the base electrode of the fourth triode (Q8);
a second diode (ZD 4), wherein the collector of the fourth triode (Q8) is connected with the driving power supply through a tenth resistor (R3) and the second diode (ZD 4); the collector of the fourth triode (Q8) is connected with one end of the tenth resistor (R3), the other end of the tenth resistor (R3) is connected with the cathode of the second diode (ZD 4), and the anode of the second diode (ZD 4) is connected with the driving power supply.
6. The high power lithium battery protection plate of claim 5, wherein the charge driving circuit further comprises:
and the cathode of the voltage stabilizing diode (ZD 8) is connected with the collector of the fourth triode (Q8), and the anode of the voltage stabilizing diode (ZD 8) is connected with the reference ground.
7. The high power lithium battery protection plate of claim 1, wherein the switching tube circuit comprises:
the source electrode of the first MOS tube (M11-16) is connected with the negative end of the lithium battery pack, and the grid electrode of the first MOS tube (M11-16) is connected with the discharge control signal output end of the discharge driving circuit;
the drain electrode of the second MOS tube (M1-6) is connected with the drain electrode of the first MOS tube (M11-16), the source electrode of the second MOS tube (M1-6) is connected with the negative output end of charge and discharge, and the grid electrode of the second MOS tube (M1-6) is connected with the output end of the charge control signal of the charge driving circuit.
8. The high power lithium battery protection plate of claim 1, wherein the lithium battery protection circuit comprises:
the lithium battery protection chips are respectively provided with a plurality of lithium battery protection chips, each lithium battery protection chip is sequentially connected, and each lithium battery protection chip is respectively connected with one lithium battery so as to carry out overcharge and overdischarge detection on each lithium battery of the lithium battery pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320090182.0U CN219287177U (en) | 2023-01-31 | 2023-01-31 | High-power lithium battery protection board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320090182.0U CN219287177U (en) | 2023-01-31 | 2023-01-31 | High-power lithium battery protection board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219287177U true CN219287177U (en) | 2023-06-30 |
Family
ID=86908760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320090182.0U Active CN219287177U (en) | 2023-01-31 | 2023-01-31 | High-power lithium battery protection board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219287177U (en) |
-
2023
- 2023-01-31 CN CN202320090182.0U patent/CN219287177U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102214914B (en) | Charging and discharging protection circuit of lithium iron phosphate battery for electric automobile | |
| CN201750183U (en) | Charge protection device of lithium iron phosphate battery for communication base station | |
| CN103384076B (en) | Zero-v charging circuit for lithium battery protection and working method thereof | |
| CN213402499U (en) | Battery protection circuit | |
| WO2023016574A1 (en) | Switching circuit, battery management system, battery pack, electrical device and control method | |
| CN202930922U (en) | Lithium battery protective circuit | |
| CN214672757U (en) | Automatic heating system for battery pack | |
| CN219287177U (en) | High-power lithium battery protection board | |
| CN214675101U (en) | Quick switching circuit of lithium battery pack loop | |
| CN218675240U (en) | Lithium battery comprehensive test equipment with multifunctional protection | |
| CN102097796A (en) | Voltage peak absorption protection circuit for power switching tube of solar energy charge controller | |
| CN201298735Y (en) | Lithium-ion battery protection device and an application device thereof | |
| CN201113506Y (en) | Circuit capable of charging low voltage batteries | |
| CN202353191U (en) | Protection device with multiple metal oxide semiconductor (MOS) transistors | |
| CN104124723A (en) | Circuit for preventing cell from overcharging/overdischarging | |
| CN219287178U (en) | Lithium battery charge-discharge dual protection circuit | |
| CN106655107A (en) | High power lithium battery protector | |
| CN219779800U (en) | Lithium battery charge and discharge information acquisition control circuit | |
| CN215343899U (en) | High-power lithium battery pack protection circuit | |
| CN218771329U (en) | Battery discharge switch control circuit | |
| CN203104045U (en) | Main circuit of solar charging controller | |
| CN217335159U (en) | High-power lithium battery charging circuit | |
| CN217335160U (en) | Dual lithium battery protection circuit | |
| CN212323786U (en) | Heavy current lithium cell protection device | |
| CN112952924A (en) | Battery management device and electrical apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |