CN222420490U - A battery cell monitoring unit system - Google Patents
A battery cell monitoring unit system Download PDFInfo
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- CN222420490U CN222420490U CN202323542260.5U CN202323542260U CN222420490U CN 222420490 U CN222420490 U CN 222420490U CN 202323542260 U CN202323542260 U CN 202323542260U CN 222420490 U CN222420490 U CN 222420490U
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 63
- 230000002093 peripheral effect Effects 0.000 claims abstract description 16
- 238000005070 sampling Methods 0.000 claims description 47
- 238000011161 development Methods 0.000 abstract description 22
- 238000012360 testing method Methods 0.000 abstract description 10
- 238000012795 verification Methods 0.000 abstract description 4
- 238000004904 shortening Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 5
- 238000009960 carding Methods 0.000 description 4
- 238000002407 reforming Methods 0.000 description 4
- 238000002788 crimping Methods 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
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- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011981 development test 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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Abstract
本实用新型公开了一种电芯监控单元系统，包括电芯监控单元和转接电路板；所述电芯监控单元包括AFE芯片和外围电路，所述外围电路和转接电路板用于将AFE芯片和电池模组中的电芯连接，所述转接电路板用于对电芯信号进行整理，将电芯信号转换为与电芯监控单元适配的接插件排布顺序。在应用场景中转接板结构相对简单，开发和测试难度低，使得技术人员仅开发一款CMU的情况下，配合转接电路板，通过转接电路板对线路和连接进行调整，就能满足电芯多串数、多排布方案的多样化需求，节省了开发测试经费，缩短了开发验证时间，能更快响应开发需求。
The utility model discloses a battery cell monitoring unit system, including a battery cell monitoring unit and an adapter circuit board; the battery cell monitoring unit includes an AFE chip and a peripheral circuit, the peripheral circuit and the adapter circuit board are used to connect the AFE chip and the battery cells in the battery module, and the adapter circuit board is used to sort the battery cell signals and convert the battery cell signals into a connector arrangement sequence that is compatible with the battery cell monitoring unit. In the application scenario, the adapter board structure is relatively simple, and the development and testing difficulty is low, so that when the technicians only develop one CMU, they can adjust the lines and connections through the adapter circuit board to meet the diverse needs of multiple strings and multiple arrangement schemes of the battery cells, saving development and testing funds, shortening the development verification time, and responding to development needs more quickly.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery cell monitoring unit system.
Background
With the continuous development of electric automobiles, users have increasingly abundant demands for more electric quantity of batteries. The battery power is enriched, so that the arrangement of the battery cells in the battery pack and the diversification of the number of the battery cells are brought, and each time a new requirement appears, technicians need to design a battery cell control unit corresponding to the requirement, so that the versions of corresponding battery Cell Monitoring Units (CMUs) are increased, a large number of heavy development tasks and test tasks are brought, and a large number of manpower and material resources are consumed.
Disclosure of utility model
Based on the problems, the utility model provides a battery cell monitoring unit system, which meets the requirement of diversified battery cell arrangement on the premise of not bringing a large number of heavy development tasks and test tasks.
The embodiment of the utility model discloses the following technical scheme:
A battery cell monitoring unit system comprises a battery cell monitoring unit and a switching circuit board;
The battery cell monitoring unit comprises an AFE chip and a peripheral circuit, wherein the peripheral circuit and the switching circuit board are used for connecting the AFE chip with the battery cells in the battery module, and the switching circuit board is used for sorting the battery cell signals and converting the battery cell signals into connector arrangement sequences matched with the battery cell monitoring unit.
Optionally, the peripheral circuit includes N sampling channels that the AFE chip corresponds, the switching circuit board pass through N sampling channels with the AFE chip is connected, the switching circuit board passes through M electric core connecting wire and is connected with the electric core in the battery module, M and N are positive integer.
Optionally, when the number of the battery cells is different from the number of sampling channels of the battery cell monitoring unit, the adapter plate is used for matching the number of the battery cell connecting wires with the number of the sampling channels of the battery cell monitoring unit by adjusting an internal circuit of the adapter circuit board.
Optionally, when the outlet wire arrangement sequence of the electric core is not matched with the sampling channel arrangement sequence of the electric core monitoring unit, the adapter plate is used for adjusting the outlet wire arrangement sequence of the electric core, so that the outlet wire arrangement sequence obtained by adjustment is matched with the sampling channel arrangement sequence of the electric core monitoring unit.
Optionally, when the number of the electric cores is different from the number of sampling channels of the electric core monitoring unit, and the outlet wire arrangement sequence of the electric cores is not matched with the sampling channel arrangement sequence of the electric core monitoring unit, the adapter plate is used for adjusting the internal circuit of the adapter circuit board and the outlet wire arrangement sequence of the electric cores, so that the number of the electric core connecting wires is matched with the number of the sampling channels of the electric core monitoring unit, and the outlet wire arrangement sequence obtained by adjustment is matched with the sampling channel arrangement sequence of the electric core monitoring unit.
Optionally, the AFE chip is configured to collect at least one of voltage information of the electrical core, collect current information of the electrical core, collect temperature information of the electrical core, and monitor fault information of the electrical core.
Optionally, the battery module comprises a plurality of parallel or serial battery cells.
Optionally, the adapter plate includes a PCB board, where the PCB board includes an inlet port and an outlet port of the sampling line, and the inlet port and the outlet port are respectively connected with the AFE chip and the module electric core.
Optionally, the switching circuit board comprises a soft board type or a hard board type switching circuit.
Compared with the prior art, the utility model has the following beneficial effects:
The utility model provides a battery cell monitoring unit system which comprises a battery cell monitoring unit and a switching circuit board, wherein the battery cell monitoring unit comprises an AFE chip and a peripheral circuit, the peripheral circuit and the switching circuit board are used for connecting the AFE chip with a battery cell in a battery module, and the switching circuit board is used for sorting battery cell signals and converting the battery cell signals into connector arrangement sequences matched with the battery cell monitoring unit. The transfer board structure is relatively simple in application scene, development and test difficulty are low, so that under the condition that a technician only develops one CMU, the transfer circuit board is matched, and lines and connections are adjusted through the transfer circuit board, so that the diversified requirements of multiple strings and multiple rows of distribution schemes of the battery cells can be met, development and test expenses are saved, development and verification time is shortened, and development requirements can be responded more quickly.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic diagram of a system of a cell monitoring unit according to an embodiment of the present utility model;
Fig. 2 is a schematic diagram of an application scenario of a system of a cell monitoring unit according to an embodiment of the present utility model;
fig. 3 is a schematic diagram of an application scenario of a system of a cell monitoring unit according to an embodiment of the present utility model;
Fig. 4 is a schematic diagram of an application scenario of a system of a cell monitoring unit according to an embodiment of the present utility model.
Detailed Description
As described above, with the continuous development of electric vehicles, the user needs more and more electric power of the battery. The battery power is rich, so that the arrangement of the battery cells in the battery pack and the number of the battery cells are diversified, the versions of corresponding battery Cell Monitoring Units (CMUs) are increased, and a large number of heavy development tasks and test tasks are brought.
In order to make the present utility model better understood by those skilled in the art, the following description will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. 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.
Referring to fig. 1, fig. 1 is a schematic diagram of a system of a cell monitoring unit provided by an embodiment of the present utility model, where the system includes a cell monitoring unit and a switching circuit board, the cell monitoring unit includes an AFE chip and a peripheral circuit, the peripheral circuit and the switching circuit board are used to connect the AFE chip with a cell in a battery module, and the switching circuit board is used to sort cell signals and convert the cell signals into a connector arrangement sequence adapted to the cell monitoring unit.
The switch circuit board may convert signals on one circuit board to signals on another circuit board. The patch circuit boards are commonly used to connect different types of circuit boards or to connect the circuit boards to computers or other devices. The switching circuit board is used for reforming and carding the cell signals, and converting the cell signals into the connector arrangement sequence of the CMU. The design combination does not need to redesign a complex CMU circuit board, and only needs to redesign a conversion circuit board. Under the condition that a development designer only develops one CMU, the multi-string number and multi-arrangement scheme of the battery cells can be met, development and test expenses are saved, development and verification time is shortened, and development requirements can be responded more quickly.
In one possible implementation manner, the peripheral circuit includes N sampling channels corresponding to the AFE chip, the switching circuit board is connected with the AFE chip through the N sampling channels, the switching circuit board is connected with the battery cells in the battery module through M battery cell connecting lines, and M and N are positive integers.
The CMU is designed to take into account the highest sampling channel that may be subsequently applied, and recommends that the sampling channel of the AFE be as full as possible. The CMU is composed of an AFE chip and peripheral circuitry. The AFE chip is one of key chips in the collector and is responsible for converting an analog signal into a digital signal so as to facilitate subsequent processing. The peripheral circuit may include various passive components and active components, such as capacitors, resistors, transistors, etc., for supporting the operation of the AFE chip, and may also perform certain processing and filtering on the signal. Thus, the CMU in this embodiment is composed of an AFE chip and peripheral circuits.
In one possible implementation manner, when the number of the battery cells is different from the number of the sampling channels of the battery cell monitoring unit, the adapter plate is used for matching the number of the battery cell connecting wires with the number of the sampling channels of the battery cell monitoring unit by adjusting the internal circuit of the adapter circuit board.
The number of cells refers to the number of cells in the battery. The CMU sampling channel number refers to the number of cell sampling channels that the CMU module in the battery management system has.
The application scene is that the number of the battery cells is inconsistent with the number of the CMU sampling channels. In this scenario, the number of battery cells and the number of AFE sampling channels are configured in a matching manner by adjusting the internal circuit of the adapter plate. Connection schematic referring to fig. 2, fig. 2 is a schematic diagram of an application scenario of a cell monitoring unit system provided by the embodiment of the utility model, wherein the number of cells is 3, the number of CMU sampling channels is 4, at this time, the number of cells is inconsistent with the number of CMU sampling channels, the number of cells and the number of AFE sampling channels are matched and configured by internal circuit adjustment of an adapter plate, so that reforming and carding of cell signals are realized, and the cell signals are converted into a connector arrangement sequence of CMU adaptation.
In one possible implementation manner, when the outlet wire arrangement sequence of the battery core is not matched with the sampling channel arrangement sequence of the battery core monitoring unit, the adapter plate is used for adjusting the outlet wire arrangement sequence of the battery core, so that the outlet wire arrangement sequence obtained by adjustment is matched with the sampling channel arrangement sequence of the battery core monitoring unit.
The battery cell outgoing line means that the anode and the cathode of the battery cell are connected to the circuit board through the electrode plate and the lead wire on the battery cell shell, so that the electric energy of the battery cell is output. The connection mode of the battery cell outgoing line is two modes of welding and crimping. The welding mode is to connect the lead wire of the battery core to the circuit board in a welding mode, and the crimping mode is to connect the lead wire of the battery core with the socket on the circuit board in a crimping mode. The connection quality of the battery cell outgoing line directly influences the service life and the safety performance of the mobile power supply.
Namely, the arrangement sequence of the battery cell outgoing lines in the application scene cannot be matched with the arrangement sequence of the CMU interfaces. In this scenario, the patch panel sorts and rearranges the outgoing line sequence of the battery cells to match the arrangement sequence of the CMU interfaces. Referring to fig. 3, fig. 3 is a schematic diagram of an application scenario of the cell monitoring unit system provided by the embodiment of the utility model, wherein the number of cells is 4, the number of CMU sampling channels is 4, at this time, the number of cells is consistent with the number of CMU sampling channels, but the arrangement sequence of the cells is from cell 4 to cell 1, the arrangement sequence of CMU interfaces is from channel 1 to channel 4, the arrangement sequence of cell outgoing lines cannot be matched with the arrangement sequence of CMU interfaces, and the adapter plate sorts and rearranges the wire outgoing sequences of the cells to match the arrangement sequence of CMU interfaces, that is, reforming and carding of cell signals are realized, and the cell signals are converted into the arrangement sequence of connectors for CMU adaptation.
In one possible implementation manner, when the number of the electric cores is different from the number of the sampling channels of the electric core monitoring unit, and the outlet wire arrangement sequence of the electric cores is not matched with the sampling channel arrangement sequence of the electric core monitoring unit, the adapter plate is used for adjusting the internal circuit of the adapter circuit board and adjusting the outlet wire arrangement sequence of the electric cores so that the number of the electric core connecting wires is matched with the number of the sampling channels of the electric core monitoring unit, and the outlet wire arrangement sequence obtained by adjustment is matched with the sampling channel arrangement sequence of the electric core monitoring unit.
That is, the number of the battery cells in the application scene and the arrangement sequence of the battery cell wires cannot be matched with the interface of the CMU. In this scenario, the adapter plate not only needs to adjust the number of sampling channels of the battery cells, but also rearranges the outlet sequence of the battery cells to match the arrangement sequence of the CMU interfaces. Referring to fig. 4, fig. 4 is a schematic diagram of an application scenario of a cell monitoring unit system provided by the embodiment of the utility model, wherein the number of cells is 3, the number of CMU sampling channels is 4, at this time, the number of cells is inconsistent with the number of CMU sampling channels, the arrangement sequence of the cells is from cell 3 to cell 1, the arrangement sequence of CMU interfaces is from channel 1 to channel 4, the arrangement sequence of cell outgoing lines cannot be matched with the arrangement sequence of CMU interfaces, and the adapter plate sorts and rearranges the wire outgoing sequences of the cells to match the arrangement sequence of CMU interfaces, that is, reforming and carding of cell signals are realized, and the cell signals are converted into the arrangement sequence of CMU-adapted connectors.
In one possible implementation, the AFE chip is configured to at least one of collect voltage information of the battery cell, collect current information of the battery cell, collect temperature information of the battery cell, and monitor fault information of the battery cell.
In Battery Management Systems (BMS), the role of the AFE chip is mainly to monitor and protect the battery. The battery can generate various signals such as voltage, current, temperature and the like in the charging and discharging process, and the AFE chip can collect, process and analyze the signals, so that the monitoring and the protection of the battery are realized.
Specifically, the main roles of AFE chips in BMS include:
And voltage acquisition, namely acquiring the voltage of each battery monomer in the battery pack by the AFE chip, so as to know the state and capacity of the battery and judge whether the problems of overcharge, undercharge, unbalance and the like exist.
And the current acquisition, namely the AFE chip can acquire the current information of the battery pack, including the charging current and the discharging current, so that the state and the residual capacity of the battery are monitored in real time.
And the AFE chip can collect temperature information of the battery pack, so that temperature change and thermal runaway of the battery are known, and the battery is protected from the influence of overheat and other problems.
The AFE chip can monitor the state and parameters of the battery pack in real time, and can timely respond to the fault conditions such as overcharge, overdischarge, short circuit and the like of the battery to protect the battery from damage.
In one possible implementation, the battery module includes a plurality of parallel or series-connected battery cells.
The number of cells and the number of modules of the battery pack are two important components of the battery pack. The number of the battery cells of the battery pack depends on the design and application of the battery pack, and the battery module is composed of a plurality of battery cells. For example, a battery module may be composed of tens or hundreds of cells, which may be connected in parallel or in series to meet different voltage and capacity requirements. The battery module further includes components such as a thermal management system, a Battery Management System (BMS), an electrical system, and structural members to ensure safety and performance stability of the battery.
For example, if a battery pack is required to provide high voltage and large capacity, it may need to be composed of hundreds of cells that may be connected in parallel to provide a sufficient current output. These cells may be assembled into a plurality of battery modules, each having its own thermal management system and BMS, to ensure the safety and performance stability of the battery. In addition, the design and application of the battery pack also affect the number and size of the battery modules. For example, some electric vehicles require a large battery module to provide sufficient range, while some portable electronic devices require a small battery module to provide sufficient power
In one possible implementation, the adapter plate includes a PCB board including an inlet port and an outlet port of the sampling line, and the PCB board is connected to the AFE chip and the module cell, respectively.
In one possible implementation, the patch circuit board includes a patch circuit of a soft board type or a hard board type.
In summary, this scheme makes under the condition that development designer only developed a section CMU, just can satisfy the diversified demand of many cluster numbers of electric core, multirow arrangement scheme, has saved development test expense, has shortened development verification time, can respond development demand sooner, simultaneously, the adapter plate structure is relatively simple, development and test degree of difficulty are low. The combined design scheme can reduce development cost and test cost and improve the competitiveness of the product.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The battery cell monitoring unit system is characterized by comprising a battery cell monitoring unit and a switching circuit board;
The battery cell monitoring unit comprises an AFE chip and a peripheral circuit, wherein the peripheral circuit and the switching circuit board are used for connecting the AFE chip with the battery cells in the battery module, and the switching circuit board is used for sorting the battery cell signals and converting the battery cell signals into connector arrangement sequences matched with the battery cell monitoring unit.
2. The cell monitoring unit system according to claim 1, wherein the peripheral circuit comprises N sampling channels corresponding to the AFE chip, the switching circuit board is connected with the AFE chip through the N sampling channels, the switching circuit board is connected with the cells in the battery module through M cell connecting wires, and M and N are positive integers.
3. The system of claim 1, wherein when the number of cells is different from the number of sampling channels of the cell monitoring unit, the switching circuit board is configured to adjust the internal circuit of the switching circuit board so that the number of cell connection lines matches the number of sampling channels of the cell monitoring unit.
4. The system of claim 1, wherein when the wire-out arrangement order of the electrical core is not matched with the sampling channel arrangement order of the electrical core monitoring unit, the switching circuit board is configured to adjust the wire-out arrangement order of the electrical core so that the wire-out arrangement order obtained by the adjustment matches with the sampling channel arrangement order of the electrical core monitoring unit.
5. The system of claim 1, wherein when the number of the cells is different from the number of sampling channels of the cell monitoring unit, and the arrangement sequence of the outgoing lines of the cells is not matched with the arrangement sequence of the sampling channels of the cell monitoring unit, the switching circuit board is used for adjusting the internal circuit of the switching circuit board and the arrangement sequence of the outgoing lines of the cells so that the number of the cell connecting lines is matched with the number of the sampling channels of the cell monitoring unit, and the arrangement sequence of the outgoing lines obtained by adjustment is matched with the arrangement sequence of the sampling channels of the cell monitoring unit.
6. The cell monitoring unit system of claim 1, wherein the AFE chip is configured to at least one of collect voltage information of a cell, collect current information of a cell, collect temperature information of a cell, and monitor fault information of a cell.
7. The cell monitoring unit system of claim 1, wherein the battery module comprises a plurality of cells connected in parallel or in series.
8. The cell monitoring unit system of claim 1, wherein the switching circuit board comprises a PCB board including an inlet port and an outlet port for the sampling line, the AFE chip and the module cell being connected, respectively.
9. The cell monitoring unit system of claim 1, wherein the switching circuit board comprises a flex-board or a hard-board switching circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323542260.5U CN222420490U (en) | 2023-12-25 | 2023-12-25 | A battery cell monitoring unit system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323542260.5U CN222420490U (en) | 2023-12-25 | 2023-12-25 | A battery cell monitoring unit system |
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| CN222420490U true CN222420490U (en) | 2025-01-28 |
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| CN202323542260.5U Active CN222420490U (en) | 2023-12-25 | 2023-12-25 | A battery cell monitoring unit system |
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- 2023-12-25 CN CN202323542260.5U patent/CN222420490U/en active Active
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