CN220154602U - Battery pack capacity test circuit and battery pack test equipment - Google Patents
Battery pack capacity test circuit and battery pack test equipment Download PDFInfo
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- CN220154602U CN220154602U CN202321473971.9U CN202321473971U CN220154602U CN 220154602 U CN220154602 U CN 220154602U CN 202321473971 U CN202321473971 U CN 202321473971U CN 220154602 U CN220154602 U CN 220154602U
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- 238000012360 testing method Methods 0.000 title claims abstract description 86
- 238000001514 detection method Methods 0.000 claims abstract description 131
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 36
- 238000004891 communication Methods 0.000 claims description 16
- 230000001276 controlling effect Effects 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 239000013543 active substance Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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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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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a battery pack capacity test circuit and battery pack test equipment, wherein the battery pack capacity test circuit comprises a bidirectional power supply circuit, a battery access end to be tested, a performance detection circuit, a switch circuit, an electric quantity detection circuit and a control circuit. The utility model detects the electric quantity of the connected battery pack to be detected through the electric quantity detection circuit and outputs a corresponding electric quantity detection signal, and the control circuit controls the switch circuit to work when detecting that the battery pack to be detected is low electric quantity according to the electric quantity detection signal so as to control the bidirectional power supply circuit to charge the battery pack to be detected; the control circuit controls the switch circuit to work when detecting that the battery pack to be detected is full, so as to control the battery pack to be detected to discharge to the bidirectional power supply circuit, and the battery pack to be detected is charged and discharged for a plurality of times through the bidirectional power supply circuit, so that the performance detection circuit detects the performance parameters of the battery pack to be detected for a plurality of times to detect the capacity of the battery pack to be detected, the operation is simpler and more convenient, and the test cost is lower.
Description
Technical Field
The utility model relates to the technical field of battery pack testing, in particular to a battery pack containing test circuit and battery pack testing equipment.
Background
The battery pack is a chargeable device composed of a plurality of battery packs, can activate the active substances in a charging mode after discharging to continue to use, has the advantages of economy and environmental protection, and is widely used. Therefore, the battery pack is required to be subjected to relevant performance test before leaving the factory, namely, each performance of the battery pack is tested by the battery pack testing device so as to check whether the quality of the battery pack is qualified.
The battery pack testing device is used for detecting the capacity, service life and other performances of a battery pack, and usually needs to conduct charge and discharge testing on the battery pack.
Disclosure of Invention
The utility model mainly aims to provide a battery pack capacity test circuit, which aims to solve the problems that the operation is complicated and the test cost is high because a direct-current power supply module and a load are adopted to respectively carry out charge and discharge tests on a battery pack for multiple times.
To achieve the above object, the present utility model provides a battery pack capacity test circuit including:
the battery access end to be tested is used for accessing the battery pack to be tested;
a bidirectional power supply circuit;
the performance detection circuit is used for testing the performance parameters of the battery pack to be tested during working and outputting corresponding performance detection signals;
the switch circuit is arranged between the bidirectional power supply circuit and the battery access end to be tested in series, and is used for controlling connection on/off between the bidirectional power supply circuit and the battery access end to be tested;
the electric quantity detection circuit is connected with the battery access end to be detected, and is used for detecting the electric quantity of the battery pack to be detected which is accessed and outputting a corresponding electric quantity detection signal;
the control end of the control circuit is connected with the controlled end of the switch circuit, and the control circuit is connected with the electric quantity detection circuit; the control circuit is used for controlling the switching circuit to work when the battery pack to be detected is detected to be low in electric quantity according to the electric quantity detection signal so as to control the bidirectional power supply circuit to charge the battery pack to be detected; when the battery to be detected is detected to be full, the switching circuit is controlled to work so as to control the battery pack to be detected to discharge to the bidirectional power supply circuit.
In one embodiment, the performance detection circuit includes:
the voltage detection circuit is used for detecting the voltage of the battery pack to be detected and outputting a corresponding voltage detection signal, and the control circuit is connected with the output end of the battery voltage detection circuit.
In an embodiment, the voltage detection circuit includes a voltage division circuit, an input end of the voltage division circuit is connected with an output end of the battery pack to be detected, an output end of the voltage division circuit is connected with the control circuit, and the voltage division circuit is used for outputting the voltage detection signal after performing voltage reduction processing on an output voltage of the battery pack to be detected.
In an embodiment, the performance detection circuit further comprises:
the detection end of the current detection circuit is connected with the second end of the switch circuit, the output end of the battery current detection circuit is connected with the control circuit, and the current detection circuit is used for detecting the current flowing through the switch circuit and outputting a corresponding current detection signal to the control circuit.
In one embodiment, the battery pack capacity test circuit includes:
the output end of the temperature detection circuit is connected with the control circuit, and the temperature detection circuit is used for detecting the temperature in the battery pack testing equipment and outputting a corresponding temperature detection signal;
the control end of the temperature control circuit is connected with the control circuit, and the temperature control circuit is used for regulating and controlling the temperature of air in the battery pack testing equipment when in operation;
the control circuit is also used for controlling the temperature control circuit to work according to the temperature detection signal so as to regulate and control the temperature of air in the battery pack testing equipment.
In an embodiment, the temperature detection circuit includes at least one temperature sensor, a detection end of each temperature sensor is disposed in the battery pack testing device, and an output end of each temperature sensor is connected with the control circuit.
In one embodiment, the battery pack capacity test circuit includes:
the controlled end of the indicating circuit is connected with the control circuit, and the indicating circuit is used for outputting corresponding indicating signals when working;
the main control circuit also controls the indicating circuit to work according to the electric quantity detection signal so as to indicate that the battery pack to be tested is in a charging or discharging state.
In one embodiment, the battery pack capacity test circuit includes:
the controlled end of the display circuit is connected with the control circuit, and the display circuit is used for displaying the performance parameters of the battery pack to be tested when in operation;
the control circuit is also used for controlling the display circuit to work according to the performance detection signal.
In one embodiment, the battery pack capacity test circuit further comprises:
the wireless communication circuit is in communication connection with the terminal equipment, is connected with the control circuit and is used for establishing communication connection with the terminal equipment;
the control circuit is further configured to upload the performance detection signal to the terminal device.
The utility model also provides battery pack testing equipment which comprises the battery pack containing test circuit.
According to the technical scheme, the electric quantity of the connected battery pack to be detected is detected through the electric quantity detection circuit, the corresponding electric quantity detection signal is output, and the control circuit controls the switch circuit to work when detecting that the battery pack to be detected is low in electric quantity according to the electric quantity detection signal so as to control the bidirectional power supply circuit to charge the battery pack to be detected; the control circuit controls the switch circuit to work when detecting that the battery pack to be detected is full, so as to control the battery pack to be detected to discharge to the bidirectional power supply circuit, and the battery pack to be detected is charged and discharged for a plurality of times through the bidirectional power supply circuit, so that the performance detection circuit detects the performance parameters of the battery pack to be detected for a plurality of times to detect the capacity of the battery pack to be detected, the operation is simpler and more convenient, and the test cost is lower.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an overall block diagram of one embodiment of a battery pack capacity test circuit according to the present utility model;
FIG. 2 is a block diagram of another embodiment of a battery pack capacity test circuit according to the present utility model;
fig. 3 is a block diagram of a battery pack capacity test circuit according to another embodiment of the utility model.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 10 | Bidirectional power supply circuit | 80 | Display circuit |
| 20 | Switching circuit | 90 | Wireless communication circuit |
| 30 | Electric quantity detection circuit | 91 | Terminal equipment |
| 40 | Control circuit | 51 | Voltage detection circuit |
| 50 | Performance detection circuit | 52 | Current detection circuit |
| 60 | Temperature detection circuit | 1 | Battery pack to be tested |
| 61 | Temperature control circuit | 601 | Temperature sensor |
| 70 | Indication circuit |
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
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
The battery pack is a chargeable device composed of a plurality of battery packs, can activate the active substances in a charging mode after discharging to continue to use, has the advantages of economy and environmental protection, and is widely used. Therefore, the battery pack is required to be subjected to relevant performance test before leaving the factory, namely, each performance of the battery pack is tested by the battery pack testing device so as to check whether the quality of the battery pack is qualified. The battery pack testing device is used for detecting the capacity, service life and other performances of a battery pack, and usually needs to conduct charge and discharge testing on the battery pack.
In order to solve the above problems, the present utility model proposes a battery pack capacity measurement circuit.
Referring to fig. 1 and 2, in an embodiment of the present utility model, the battery pack capacity measurement circuit includes:
the battery access end to be tested is used for accessing the battery pack 1 to be tested;
a bidirectional power supply circuit 10;
the performance detection circuit 50, the detection end of the performance detection circuit 50 is connected with the battery pack 1 to be detected, the performance detection circuit 50 is used for testing the performance parameters of the battery pack 1 to be detected during operation and outputting corresponding performance detection signals;
the switch circuit 20 is arranged in series between the bidirectional power supply circuit 10 and the battery access terminal to be tested, and the switch circuit 20 is used for controlling connection on/off between the bidirectional power supply circuit 10 and the battery access terminal to be tested;
the electric quantity detection circuit 30 is connected with the battery access end to be detected, and the electric quantity detection circuit 30 is used for detecting the electric quantity of the connected battery pack 1 to be detected and outputting a corresponding electric quantity detection signal;
a control circuit 40, wherein a control end of the control circuit 40 is connected with a controlled end of the switch circuit 20, and the control circuit 40 is connected with the electric quantity detection circuit 30; the control circuit 40 is configured to control the switch circuit 20 to operate when the battery pack 1 to be tested is detected to be low in power according to the power detection signal, so as to control the bidirectional power supply circuit 10 to charge the battery pack 1 to be tested; when the battery to be tested is detected to be full, the switch circuit 20 is controlled to work so as to control the battery pack 1 to be tested to discharge to the bidirectional power supply circuit 10.
In the present embodiment, the bidirectional power supply circuit 10 may be implemented by using a bidirectional power supply circuit 10 such as an LLC bidirectional power supply. The switching circuit 20 may be implemented by using a switching transistor such as a MOS transistor or a triode. In this embodiment, the switch circuit 20 may be a power tube, taking the high-level turn-on of the switch circuit 20 as an example, when the control circuit 40 outputs a high-level signal to the controlled end of the switch circuit 20, the switch circuit 20 may be controlled to be in an on state, so as to output the dc voltage output by the bidirectional power supply circuit 10 to the to-be-tested battery pack 1 electrically connected therewith, so that the to-be-tested battery pack 1 charges according to a preset charging current; when the control circuit 40 outputs a low-level signal to the controlled end of the switch circuit 20, the switch circuit 20 can be controlled to be in a closed state, but the voltage output by the battery pack 1 to be tested can be directly transmitted to the bidirectional power circuit 10 through the body diode of the power tube to discharge, compared with the case that the direct current power module and the load respectively perform the charge and discharge test on the battery pack 1 to be tested, the bidirectional power circuit 10 is adopted to perform the charge and discharge test on the battery pack 1 to be tested for multiple times, so that the operation is simpler and the test cost is lower.
In the present embodiment, the performance detection circuit 50 may be implemented by a performance detection circuit 50 such as a current measurement circuit and a voltage detection circuit 51. It can be understood that the control circuit 40 can detect the performance parameters of the battery pack 1 to be tested, such as the voltage or current of the battery pack 1 to be tested, according to the performance detection signal, that is, the capacity of the battery pack 1 to be tested is detected by the performance parameters of the battery pack 1 to be tested during discharging, so as to complete the performance test of the battery pack 1 to be tested.
In this embodiment, the control circuit 40 may be implemented by a control circuit 40 such as an MCU, a DSP (Digital Signal Process, digital signal processing Chip), an FPGA (Field Programmable Gate Array, programmable gate array Chip), an SOC (System On Chip), or the like. The electric quantity detection circuit 30 may be implemented by any electric quantity detection circuit 30 capable of detecting the electric quantity of the connected battery pack 1 to be tested, for example, an LM339 chip. It can be understood that when the control circuit 40 detects that the battery pack 1 to be tested is low in power according to the power detection signal, the control switch circuit 20 is controlled to operate so as to control the bidirectional power supply circuit 10 to charge the battery pack 1 to be tested, i.e. to output the dc voltage outputted by the bidirectional power supply circuit 10 to the battery pack 1 to be tested; when the control circuit 40 detects that the battery pack 1 to be tested is full, the switch circuit 20 is controlled to operate to control the battery pack 1 to be tested to discharge to the bidirectional power circuit 10, that is, the output voltage of the battery pack 1 to be tested is input to the bidirectional power circuit 10, that is, the battery pack 1 to be tested is controlled to charge and discharge for multiple times, so that the performance detection circuit 50 detects the performance parameters of the battery pack 1 to be tested for multiple times, and the accuracy of capacity test of the battery pack 1 to be tested is improved.
According to the technical scheme, the electric quantity of the connected battery pack 1 to be tested is detected by the electric quantity detection circuit 30, and a corresponding electric quantity detection signal is output, and when the battery pack 1 to be tested is detected to be low in electric quantity according to the electric quantity detection signal, the control circuit 40 controls the switch circuit 20 to work so as to control the bidirectional power supply circuit 10 to charge the battery pack 1 to be tested; the control circuit 40 controls the switch circuit 20 to work when detecting that the battery pack 1 to be tested is full, so as to control the battery pack 1 to be tested to discharge to the bidirectional power supply circuit 10, and the battery pack 1 to be tested is charged and discharged for a plurality of times through the bidirectional power supply circuit 10, so that the performance detection circuit 50 detects the performance parameters of the battery pack 1 to be tested for a plurality of times to detect the capacity of the battery pack 1 to be tested, the operation is simpler and more convenient, and the test cost is lower.
Referring to fig. 2, in one embodiment, the performance detection circuit 50 includes:
the voltage detection circuit 51, a detection end of the voltage detection circuit 51 is connected with the battery pack 1 to be detected, an output end of the battery voltage detection circuit 51 is connected with the control circuit 40, and the voltage detection circuit 51 is used for detecting the voltage of the battery pack 1 to be detected and outputting a corresponding voltage detection signal to the control circuit 40.
In this embodiment, the voltage detection circuit 51 may be implemented by using any voltage detection circuit 51 capable of detecting the voltage of the battery pack 1 to be tested, and in this embodiment, the voltage detection circuit 51 may be selected as a voltage division circuit, an input end of the voltage division circuit is connected to an output end of the battery pack 1 to be tested, an output end of the voltage division circuit is connected to the control circuit 40, and the voltage division circuit is configured to step down the output voltage of the battery pack 1 to be tested and output the voltage detection signal. It can be understood that the voltage detection circuit 51 detects the voltage of the battery pack 1 to be tested and outputs a corresponding voltage detection signal, and the control circuit 40 detects the voltage parameter of the battery pack 1 to be tested according to the voltage detection signal, thereby realizing the capacity test of the battery pack 1 to be tested.
In one embodiment, the performance detection circuit 50 further comprises:
the detecting end of the current detecting circuit 52 is connected with the battery pack 1 to be detected, the output end of the battery current detecting circuit 52 is connected with the control circuit 40, and the current detecting circuit 52 is used for detecting the current of the battery pack 1 to be detected and outputting a corresponding current detecting signal to the control circuit 40.
In this embodiment, the current detection circuit 52 may be implemented by any current detection circuit 52 capable of detecting the current of the battery pack 1 to be tested, and in order to reduce the voltage drop effect caused by the resistor, the current detection circuit 52 may be implemented by using a current sensing resistor or a current divider with a smaller resistance value, for example, a current sensing resistor with a resistance value below 50mΩ. It can be understood that the current detection circuit 52 detects the current of the battery pack 1 to be tested and outputs a corresponding current detection signal to the control circuit 40, and the control circuit 40 detects the current parameter of the battery pack 1 to be tested according to the current detection signal, so as to realize the capacity test of the battery pack 1 to be tested.
Referring to fig. 2 and 3, in one embodiment, the battery pack capacity test circuit includes:
the output end of the temperature detection circuit 60 is connected with the control circuit 40, and the temperature detection circuit 60 is used for detecting the temperature in the battery pack testing device and outputting a corresponding temperature detection signal;
the temperature control circuit 61, the controlled end of the temperature control circuit 61 is connected with the control circuit 40, and the temperature control circuit 61 is used for controlling the temperature of the air in the battery pack testing device during working;
the control circuit 40 is further configured to control the temperature control circuit 61 to operate according to the temperature detection signal, so as to regulate and control the temperature of the air in the battery pack testing device.
In the present embodiment, the temperature detection circuit 60 may be implemented using any temperature detection circuit 60 that can detect the temperature inside the battery pack testing device, such as a temperature sensor 601, or the like. The temperature control circuit 61 may be implemented by any temperature control circuit 61 that can regulate and control the temperature of air in the battery pack testing device, such as a fan. It can be understood that the temperature detection circuit 60 detects the temperature in the battery pack testing device and outputs a corresponding temperature detection signal to the control circuit 40, the control circuit 40 controls the temperature control circuit 61 to operate according to the temperature detection signal so as to regulate the temperature of the air in the battery pack testing device, for example, when the temperature value (27 degrees) corresponding to the temperature detection signal exceeds the preset temperature value (25 degrees), the control circuit 40 controls the temperature control circuit 61 to operate so as to reduce the temperature of the air in the battery pack testing device, and the temperature regulation and control of the air in the battery pack testing device by the temperature detection circuit 60 and the temperature control circuit 61 is realized.
In one embodiment, the temperature detection circuit 60 includes at least one temperature sensor 601, a detection end of each temperature sensor 601 is disposed in the battery pack testing device, and an output end of each temperature sensor 601 is connected to the control circuit 40. In this example, a plurality of temperature sensors 601 are provided to detect the temperature in the battery pack testing device, so that the accuracy of data is improved.
Referring to fig. 2, in one embodiment, the battery pack capacity test circuit includes:
the control end of the indication circuit 70 is connected with the control circuit 40, and the indication circuit 70 is used for outputting corresponding indication signals when working;
the main control circuit also controls the indicating circuit 70 to operate according to the electric quantity detection signal so as to indicate that the battery pack 1 to be tested is in a charging or discharging state.
In this embodiment, the indication circuit 70 may be implemented by any indication circuit 70 capable of outputting indication signals, for example, LED lamps, and the number and color of the LED lamps may be set according to practical situations. In this embodiment, the control circuit 40 controls the indicating circuit 70 to work according to the electric quantity detection signal, the indicating circuit 70 includes a blue LED lamp and a red LED lamp, specifically, when the electric quantity of the battery pack 1 to be tested is low, the red LED lamp is controlled to be on, so that a worker knows that the battery pack 1 to be tested is in a charging state; when the battery pack 1 to be tested is full, the blue LED lamp is controlled to be on, so that a worker knows that the battery pack 1 to be tested is in a discharging state, and the worker can conveniently and rapidly judge that the battery pack 1 to be tested is in a charging or discharging state, and the battery pack is extremely simple and convenient.
Referring to fig. 2, in one embodiment, the battery pack capacity test circuit includes:
the controlled end of the display circuit 80 is connected with the control circuit 40, and the display circuit 80 is used for displaying the performance parameters of the battery pack 1 to be tested when in work;
the control circuit 40 is further configured to control the operation of the display circuit 80 according to the performance detection signal.
In the present embodiment, the display circuit 80 may be implemented by any display circuit 80 that can display the performance parameters of the battery pack 1 to be tested, such as an LED display screen. It can be understood that the control circuit 40 can control the display circuit 80 to operate according to the performance detection parameter to display the performance parameter of the battery pack 1 to be tested, such as "voltage is 5V" or "current is 1A", so that the staff can quickly know the performance parameter of the battery pack 1 to be tested.
Referring to fig. 2, in an embodiment, the battery pack capacity test circuit further includes:
a wireless communication circuit 90, the wireless communication circuit 90 being communicatively connected to a terminal device 91, the wireless communication circuit 90 being connected to the control circuit 40, the wireless communication circuit 90 being configured to establish a communication connection with the terminal device 91;
the control circuit 40 is further configured to upload the performance detection signal to the terminal device 91.
In the present embodiment, the wireless communication circuit 90 may be implemented by any wireless communication circuit 90 that can establish a communication connection with the terminal device 91, such as a fiber-optic transceiver, bluetooth, wiFi, or the like. It will be appreciated that, after the control circuit 40 receives the performance detection signal output by the performance detection circuit 50, the performance detection signal is uploaded to the terminal device 91 through the wireless communication circuit 90, so that an offsite staff can monitor the performance parameter value of the battery pack 1 to be detected in real time, which is more convenient.
The utility model also provides battery pack testing equipment, which comprises the battery pack containing test circuit; the specific structure of the battery pack capacity test circuit refers to the above embodiments, and since the battery pack test device adopts all the technical solutions of all the embodiments, the battery pack capacity test circuit has at least all the beneficial effects brought by the technical solutions of the embodiments, and is not described in detail herein.
The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (10)
1. A battery pack capacity test circuit, the battery pack capacity test circuit comprising:
the battery access end to be tested is used for accessing the battery pack to be tested;
a bidirectional power supply circuit;
the performance detection circuit is used for testing the performance parameters of the battery pack to be tested during working and outputting corresponding performance detection signals;
the switch circuit is arranged between the bidirectional power supply circuit and the battery access end to be tested in series, and is used for controlling connection on/off between the bidirectional power supply circuit and the battery access end to be tested;
the electric quantity detection circuit is connected with the battery access end to be detected, and is used for detecting the electric quantity of the battery pack to be detected which is accessed and outputting a corresponding electric quantity detection signal;
the control end of the control circuit is connected with the controlled end of the switch circuit, and the control circuit is connected with the electric quantity detection circuit; the control circuit is used for controlling the switching circuit to work when the battery pack to be detected is detected to be low in electric quantity according to the electric quantity detection signal so as to control the bidirectional power supply circuit to charge the battery pack to be detected; when the battery to be detected is detected to be full, the switching circuit is controlled to work so as to control the battery pack to be detected to discharge to the bidirectional power supply circuit.
2. The battery pack capacity test circuit of claim 1, wherein the performance detection circuit comprises:
the voltage detection circuit is used for detecting the voltage of the battery pack to be detected and outputting a corresponding voltage detection signal, and the control circuit is connected with the output end of the voltage detection circuit.
3. The battery pack capacity test circuit according to claim 2, wherein the voltage detection circuit comprises a voltage division circuit, an input end of the voltage division circuit is connected with an output end of the battery pack to be tested, an output end of the voltage division circuit is connected with the control circuit, and the voltage division circuit is used for outputting the voltage detection signal after performing voltage reduction processing on the output voltage of the battery pack to be tested.
4. The battery pack capacity test circuit of claim 1, wherein the performance detection circuit further comprises:
the detection end of the current detection circuit is connected with the second end of the switch circuit, the output end of the battery current detection circuit is connected with the control circuit, and the current detection circuit is used for detecting the current flowing through the switch circuit and outputting a corresponding current detection signal to the control circuit.
5. The battery pack capacity test circuit of claim 1, wherein the battery pack capacity test circuit comprises:
the output end of the temperature detection circuit is connected with the control circuit, and the temperature detection circuit is used for detecting the temperature in the battery pack testing equipment and outputting a corresponding temperature detection signal;
the control end of the temperature control circuit is connected with the control circuit, and the temperature control circuit is used for regulating and controlling the temperature of air in the battery pack testing equipment when in operation;
the control circuit is also used for controlling the temperature control circuit to work according to the temperature detection signal so as to regulate and control the temperature of air in the battery pack testing equipment.
6. The battery pack testing circuit of claim 5, wherein said temperature sensing circuit comprises at least one temperature sensor, a sensing terminal of each of said temperature sensors being disposed within said battery pack testing device, an output terminal of each of said temperature sensors being connected to said control circuit.
7. The battery pack capacity test circuit of claim 1, wherein the battery pack capacity test circuit comprises:
the controlled end of the indicating circuit is connected with the control circuit, and the indicating circuit is used for outputting corresponding indicating signals when working;
the control circuit also controls the indicating circuit to work according to the electric quantity detection signal so as to indicate that the battery pack to be tested is in a charging or discharging state.
8. The battery pack capacity test circuit of claim 1, wherein the battery pack capacity test circuit comprises:
the controlled end of the display circuit is connected with the control circuit, and the display circuit is used for displaying the performance parameters of the battery pack to be tested when in operation;
the control circuit is also used for controlling the display circuit to work according to the performance detection signal.
9. The battery pack capacity test circuit of claim 1, wherein the battery pack capacity test circuit further comprises:
the wireless communication circuit is in communication connection with the terminal equipment, is connected with the control circuit and is used for establishing communication connection with the terminal equipment;
the control circuit is further configured to upload the performance detection signal to the terminal device.
10. A battery pack testing apparatus, characterized in that the battery pack testing apparatus comprises a battery pack capacity testing circuit according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321473971.9U CN220154602U (en) | 2023-06-09 | 2023-06-09 | Battery pack capacity test circuit and battery pack test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321473971.9U CN220154602U (en) | 2023-06-09 | 2023-06-09 | Battery pack capacity test circuit and battery pack test equipment |
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| Publication Number | Publication Date |
|---|---|
| CN220154602U true CN220154602U (en) | 2023-12-08 |
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|---|---|---|---|
| CN202321473971.9U Active CN220154602U (en) | 2023-06-09 | 2023-06-09 | Battery pack capacity test circuit and battery pack test equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220154602U (en) |
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2023
- 2023-06-09 CN CN202321473971.9U patent/CN220154602U/en active Active
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