CN219417610U - Battery module voltage sampling line sequence detecting system - Google Patents
Battery module voltage sampling line sequence detecting system Download PDFInfo
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- CN219417610U CN219417610U CN202320346423.3U CN202320346423U CN219417610U CN 219417610 U CN219417610 U CN 219417610U CN 202320346423 U CN202320346423 U CN 202320346423U CN 219417610 U CN219417610 U CN 219417610U
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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 relates to a battery module voltage sampling line sequence detection system, which is used for detecting a battery module, wherein the battery module comprises batteries which are sequentially connected in series, and the system comprises the following components: the number of the sampling modules is the same as that of the batteries, the sampling modules are sequentially connected in series, each sampling module corresponds to one battery, the input end of each sampling module is connected to the positive electrode of the battery of the corresponding stage, and the output end of each sampling module is connected to the negative electrode of the battery of the corresponding stage; the sampling module comprises light emitting diodes, the light emitting diodes are arranged at the output end of the sampling module, and the single light emitting diode can accept the high-voltage end and the low-voltage end of the battery of the corresponding stage so as to be lightened.
Description
Technical Field
The utility model relates to the field of line sequence detection systems, in particular to a battery module voltage sampling line sequence detection system.
Background
The battery module can be understood as an intermediate product of a battery core and a pack formed by combining lithium ion battery cores in a serial-parallel connection mode and adding a single battery monitoring and managing device. In the process of assembling the battery module, voltage sampling is needed to be carried out on the battery module so as to detect whether the assembly and the function of the battery cell are normal.
The existing equipment for detecting the voltage sampling line sequence of the battery module is complex, equipment purchase price is high for factories, the speed of identifying and outputting results is low when the equipment is used, the equipment is unfavorable for arranging more people to detect the line sequence, portability is poor, and the equipment cannot be flexibly called in the production and test processes. The method for manually detecting by adopting the universal meter is low in cost, but has the defects of missing detection, voltage accumulated value calculation, lower detection efficiency and inapplicability to the modules with more battery strings, and the risk of short circuit caused by false collision is very easy to occur if the universal meter pen is not matched with the sampling line plug.
The utility model aims at solving the problems existing in the prior art and designing a battery module voltage sampling line sequence detection system.
Disclosure of Invention
The utility model aims to solve the problems in the prior art, and provides a battery module voltage sampling line sequence detection system which can effectively solve at least one problem in the prior art.
The technical scheme of the utility model is as follows:
a battery module voltage sampling line preface detecting system for detect battery module, battery module is including the battery of serial connection in proper order, includes: the number of the sampling modules is the same as that of the batteries, the sampling modules are sequentially connected in series, each sampling module corresponds to one battery, the input end of each sampling module is connected to the positive electrode of the battery of the corresponding stage, and the output end of each sampling module is connected to the negative electrode of the battery of the corresponding stage;
the sampling module comprises light emitting diodes, the light emitting diodes are arranged at the output end of the sampling module, and the single light emitting diode can accept the high-voltage end and the low-voltage end of the battery of the corresponding stage so as to be lightened.
Further, the sampling module comprises an NPN triode, a base electrode of the NPN triode is connected to the positive electrode of the corresponding battery, a collector electrode of the NPN triode is connected to the positive electrode of the corresponding battery, an emitting electrode of the NPN triode is connected with the light emitting diode, the other end of the light emitting diode is connected to the positive electrode of the upper-stage battery or the negative electrode of the corresponding-stage battery, and the NPN triode receives the positive electrode output voltage of the corresponding-stage battery through the base electrode so as to open a loop between the light emitting diode and the upper-stage sampling module.
Further, a current limiting resistor is connected between the base electrode of the NPN triode and the positive electrode of the corresponding battery.
Further, a diode is connected between the collector of the NPN triode and the positive electrode of the corresponding battery, and the diode is conducted unidirectionally from the positive electrode of the corresponding battery to the collector of the NPN triode.
Further, the output end of the sampling module of the lowest voltage stage is grounded.
The utility model has the advantages that:
according to the utility model, the voltage sampling line sequence detection condition can be obtained rapidly and clearly according to the lighting condition of the light emitting diode through the connection relation between the sampling modules and the battery and the connection relation between the sampling modules.
According to the utility model, the NPN triode is used as a switching element, the main loop after the switching element is conducted passes through the total negative electrode of the battery, if the sampling line where the total negative electrode is located is broken, the triode of all channels is not conducted due to the unidirectional conduction characteristic of the diode, and therefore, the light emitting diode is not lightened. And the principle that the NPN triode is controlled to be conducted by the battery forward voltage is utilized, and a loop corresponding to the light emitting diode can be opened only when the power is correctly connected, so that the principle of the application is conveniently realized.
The utility model has the advantages of simple detection circuit, low cost, convenient batch production for standby, positioning of the parts with problems, convenient maintenance, reduced working difficulty of testers and improved efficiency.
Drawings
Fig. 1 is a schematic circuit diagram according to one embodiment of the present utility model.
Fig. 2 is a schematic diagram of the correct operation state when all the voltage sampling lines are connected.
Fig. 3 is a schematic diagram of an operating state when the 3 rd stage voltage sampling line is disconnected.
Fig. 4 is a schematic diagram of the working state when the 2 nd and 3 rd voltage sampling lines are connected in the wrong order.
Fig. 5 is a schematic diagram showing an operating state when the number of battery strings (n) to be tested is smaller than the number of channels (i) of the line sequence detecting circuit.
Detailed Description
For the convenience of understanding by those skilled in the art, the structure of the present utility model will now be described in further detail with reference to the accompanying drawings:
example 1
Referring to fig. 1, a battery module voltage sampling line sequence detecting system for detecting a battery module 1, the battery module 1 includes batteries 101 connected in series in sequence, including: the number of the sampling modules 2 is the same as that of the batteries 101, the sampling modules 2 are sequentially connected in series, each sampling module 2 corresponds to one battery 101, the input end of each sampling module 2 is connected to the positive electrode of the corresponding battery 101, and the output end of each sampling module 2 is connected to the negative electrode of the corresponding battery 101;
in this embodiment, the battery of the corresponding stage refers to a battery connected to the input end and the output end of a single sampling module, where the input end and the output end of the single sampling module are connected to the positive electrode and the negative electrode of the same battery. The sampling modules are connected in series, that is, the input end of the ith sampling module is connected with the output end of the (i+1) th sampling module, the output end of the ith sampling module is connected with the input end of the (i-1) th sampling module, and meanwhile, the input end and the output end of each sampling module are connected to the anode and the cathode of the battery. Thus, when the phase sequence of the battery module is correct and the connection of the sampling modules is correct, the sampling modules connected in series sequentially obtain sampling voltages from high to low, the sampling voltages correspond to battery levels, for example, in a circuit diagram shown in fig. 1, assuming that a battery voltage is 1.5V, the uppermost sampling module obtains a voltage of 6V at its input end, and the uppermost sampling module obtains a voltage of 4.5V at its output end, so that a voltage difference of 1.5V is obtained between its input end and output end.
The sampling module 2 includes a light emitting diode 205, the light emitting diode 205 is disposed at an output end of the sampling module 2, and a single light emitting diode 205 may receive a high voltage end and a low voltage end of the battery 101 of a corresponding stage to be lit.
In this embodiment, all the sampling modules are in a serial connection relationship, and each sampling module is respectively connected to a corresponding battery, where i is defined as the number of stages of the sampling modules, so that the sampling module of the i-th stage can form a loop with the sampling module of the i-1 st stage and the i-2 nd stage … st stage, and meanwhile, the i-1 st stage can also form a loop with the sampling module of the i-2 nd stage and the i-3 rd stage … st stage. Therefore, when the i-th sampling circuit has access error or voltage error, the loop formed by the i-1-th and i-2-th and i-3-th … -1-th sampling modules can still work normally, the corresponding light-emitting diode below the i-th stage can be lighted, and the light-emitting diode above the i-th stage is not lighted. Thereby detecting the voltage sampling line sequence of the battery module through the lighting condition of the light emitting diode.
Further, the sampling module includes an NPN triode 201, a base electrode of the NPN triode 201 is connected to a positive electrode of the corresponding battery 101, a collector electrode of the NPN triode 201 is connected to the positive electrode of the corresponding battery 101, an emitter electrode of the NPN triode 201 is connected to the light emitting diode 205, another end of the light emitting diode 205 is connected to the positive electrode of the previous-stage battery 101 or a negative electrode of the corresponding-stage battery 101, and the NPN triode 201 receives an output voltage of the positive electrode of the corresponding-stage battery 101 through the base electrode so as to open a loop between the light emitting diode 205 and the previous-stage sampling module 2.
Referring to fig. 1, the sampling module receives the positive voltage of the battery through the turn-on principle of the NPN triode when the voltage sampling line sequence is correctly accessed, so that the current is turned on, and if the i-1 st stage and the i-2 nd stage and the i-3 rd stage … st stage sampling module form a loop which can normally work, the light emitting diode of the i-th stage is also lighted.
Further, a current limiting resistor 203 is connected between the base of the NPN triode 201 and the positive electrode of the corresponding battery 101.
Further, a diode 202 is connected between the collector of the NPN triode 201 and the positive electrode of the corresponding battery, and the diode 202 is unidirectional conducted from the positive electrode of the corresponding battery 101 to the collector of the NPN triode 201.
Further, the output end of the sampling module 2 of the lowest voltage stage is grounded.
When the battery voltage sampling line is in correct line sequence, the battery supplies power to enable the emitter electrode of each corresponding NPN triode to be applied with forward voltage and the collector electrode to be applied with reverse voltage, so that the collector electrode is conducted to the emitter electrode, the total voltage of the battery is enabled to act on each light emitting diode, and current flows to the collector electrode, the emitter electrode, the resistor and the light emitting diode of each NPN triode to reach the negative electrode through the diode at the uppermost (highest voltage) to form a loop by referring to an arrow shown in FIG. 2. And a diode is connected between the collector of the NPN triode and the anode of the corresponding battery, and when a pressure difference exists between adjacent batteries, current cannot flow back to the cathode of the corresponding battery. The leds may thus be fully lit.
When the ith string of voltage sampling lines starts to have poor contact and even break, the triode where the positive electrode sampling line of the broken battery is positioned starts to cut off, the highest voltage only reaches the i-1 battery, and the current only starts to flow to the i-1 to 1 st light emitting diode through the i-1 st diode, so that the 1-i-1 light emitting diodes are lightened. Referring to fig. 3, fig. 3 illustrates that the 3 rd voltage sampling line is disconnected, and only the 1 st and 2 nd light emitting diodes are lighted.
When the adjacent voltage sampling lines are in wrong order, as shown in fig. 4, when the 2 nd and 3 rd series are in wrong order, the voltage of the positive connection of the 2 nd diode is higher than that of the third group, so that the 3 rd and above triodes are cut off, the 1 st and 2 nd diodes are conducted, the highest voltage is the positive electrode of the 3 rd battery, and the current flows to the 1 st and 2 nd light emitting diodes to the negative electrode through the 2 nd diode, so that the 1 st and 2 nd light emitting diodes are lightened.
When the number (n) of the tested battery strings is smaller than the number (i) of the channels of the line sequence detection circuit, the highest voltage is determined according to the positive electrode where the nth group is positioned, when the line sequence is correct, the nth group of triodes are conducted, and current flows to 1-i light emitting diodes through the nth group of diodes. As shown in fig. 5, when the number of battery strings is 3, the 4-line sequence detection effect is used.
Therefore, according to the embodiment, the voltage sampling line sequence detection condition can be obtained quickly and clearly according to the lighting condition of the light emitting diode through the connection relation between the sampling modules and the battery and the connection relation between the sampling modules.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The utility model may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order. These words may be interpreted as names.
While preferred embodiments of the present utility model have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
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; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
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 should not be understood as necessarily being 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. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The foregoing description is only of the preferred embodiments of the utility model, and all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (5)
1. A battery module voltage sampling line preface detecting system for detect battery module, battery module is including the battery of serial connection in proper order, its characterized in that: comprising the following steps: the number of the sampling modules is the same as that of the batteries, the sampling modules are sequentially connected in series, each sampling module corresponds to one battery, the input end of each sampling module is connected to the positive electrode of the battery of the corresponding stage, and the output end of each sampling module is connected to the negative electrode of the battery of the corresponding stage;
the sampling module comprises light emitting diodes, the light emitting diodes are arranged at the output end of the sampling module, and the single light emitting diode can accept the high-voltage end and the low-voltage end of the battery of the corresponding stage so as to be lightened.
2. The battery module voltage sampling line sequence detection system according to claim 1, wherein: the sampling module comprises an NPN triode, wherein the base electrode of the NPN triode is connected to the positive electrode of the corresponding battery, the collector electrode of the NPN triode is connected to the positive electrode of the corresponding battery, the emitting electrode of the NPN triode is connected with the light emitting diode, the other end of the light emitting diode is connected to the positive electrode of the upper-stage battery or the negative electrode of the corresponding-stage battery, and the NPN triode receives the positive electrode output voltage of the corresponding-stage battery through the base electrode so as to open a loop between the light emitting diode and the upper-stage sampling module.
3. The battery module voltage sampling line sequence detection system according to claim 2, wherein: and a current limiting resistor is connected between the base electrode of the NPN triode and the positive electrode of the corresponding battery.
4. The battery module voltage sampling line sequence detection system according to claim 2, wherein: and a diode is connected between the collector of the NPN triode and the positive electrode of the corresponding battery, and the diode is conducted unidirectionally from the positive electrode of the corresponding battery to the collector of the NPN triode.
5. The battery module voltage sampling line sequence detection system according to claim 1, wherein: the output end of the sampling module of the lowest voltage stage is grounded.
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| CN202320346423.3U CN219417610U (en) | 2023-02-28 | 2023-02-28 | Battery module voltage sampling line sequence detecting system |
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| CN202320346423.3U CN219417610U (en) | 2023-02-28 | 2023-02-28 | Battery module voltage sampling line sequence detecting system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116819405A (en) * | 2023-08-31 | 2023-09-29 | 绿进新能源科技(常熟)有限公司 | BMS sampling line detection system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116819405A (en) * | 2023-08-31 | 2023-09-29 | 绿进新能源科技(常熟)有限公司 | BMS sampling line detection system and method |
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