CN214542333U - Battery series formation and capacity grading equipment - Google Patents
Battery series formation and capacity grading equipment Download PDFInfo
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- CN214542333U CN214542333U CN202120641148.9U CN202120641148U CN214542333U CN 214542333 U CN214542333 U CN 214542333U CN 202120641148 U CN202120641148 U CN 202120641148U CN 214542333 U CN214542333 U CN 214542333U
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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 provides a battery serialization becomes partial volume equipment, including the host computer, with host computer communication connection's meso position machine, with meso position machine communication connection's DC power module, AC DC power module and a plurality of bypass board of being connected with DC power module. The bypass board is integrated with an input end, an output end, a first field effect transistor, an MCU control unit connected with the DC/DC power supply module, a bypass circuit connected with the MCU control unit and a monitoring unit connected with the MCU control unit. The grid electrode of the first field effect transistor is connected with the MCU control unit, the drain electrode of the first field effect transistor is connected with the input end, the source electrode of the first field effect transistor is connected with the output end, and two ends of the bypass circuit are respectively connected with the input end and the output end. And the input ends and the output ends of the two serially connected bypass boards are connected with the DC/DC power supply module. Shunt is realized in a linear region through the work of the first field effect transistor, the voltage of the battery reaches a constant voltage point, the constant voltage effect is realized, and the constant voltage structure is simple and the cost is low.
Description
[ technical field ] A method for producing a semiconductor device
The utility model belongs to the technical field of the technique of battery ization becomes partial volume and specifically relates to a battery serialization becomes partial volume equipment is related to.
[ background of the invention ]
As is well known, the formation of a battery is to perform a first constant current charging with a small current to the manufactured lithium ion battery, and form a passivation layer, i.e., a solid electrolyte interface film (SE I film), on the surface of the negative electrode in order to activate the battery. The traditional battery formation method is that a power battery channel is provided with a power supply module, a plurality of batteries are formed, namely the power supply modules with corresponding quantity need to be configured, the number of equipment channels is large when the batteries are formed in a large scale, so that the equipment occupies a large area and is high in cost, the equipment does not have advantages on a single device, and the energy efficiency is high in operation cost of charging and discharging the batteries in a large scale compared with the electricity charge operation cost of series component capacitance equipment.
Therefore, a plurality of bypass circuits which are connected in series and can switch in and out the batteries are arranged on the market, for example, in the prior art, two reverse series field effect transistors are connected in series on the batteries, two reverse series field effect transistors are connected in parallel at two ends of the batteries to serve as bypasses, after the power batteries are fully charged, the two reverse series field effect transistors on the bypasses are controlled to be conducted, the batteries are switched out, and the charging of the next battery is not influenced, as shown in fig. 1. However, in the conventional battery formation and capacity grading equipment, a constant voltage circuit for performing constant voltage on the battery is multiple in components and increases the cost.
Accordingly, the prior art is in need of improvement and development.
[ Utility model ] content
An object of the utility model is to provide a battery series connection ization becomes partial volume equipment for solve current battery ization partial volume equipment and carry out the problem that the circuit components and parts of constant voltage lead to the equipment cost increase a great deal more to the battery.
The technical scheme of the utility model as follows: a battery tandem formation capacity division apparatus comprising: the system comprises an upper computer, a middle computer in communication connection with the upper computer, a DC/DC power supply module in communication connection with the middle computer, an AC/DC power supply module connected with the DC/DC power supply module, and a plurality of bypass boards; the bypass plate is integrated with: the battery protection circuit comprises an MCU control unit connected with a DC/DC power supply module, an input end, an output end, a first field effect transistor, a bypass circuit connected with the MCU control unit and used for charging the battery and cutting out the battery, and a monitoring unit connected with the MCU control unit and used for monitoring the battery;
the grid electrode of the first field effect transistor is connected with the MCU control unit and used for keeping the voltage constant for the battery, the drain electrode of the first field effect transistor is connected with the input end, the source electrode of the first field effect transistor is connected with the output end, and two ends of the bypass circuit are respectively connected with the input end and the output end; and the input ends and the output ends of two ends of the plurality of bypass plates after being connected in series are connected with the DC/DC power supply module.
Further, the bypass circuit comprises a second field effect transistor, a third field effect transistor and a fourth field effect transistor;
the grid electrodes of the second field effect transistor, the third field effect transistor and the fourth field effect transistor are all connected with the MCU control unit; the third field effect transistor and the fourth field effect transistor are connected in series in a reverse direction, and drain electrodes at two ends of the third field effect transistor and the fourth field effect transistor are respectively connected with the input end and the anode of the battery after the third field effect transistor and the fourth field effect transistor are connected in series; and the drain electrode and the source electrode of the second field effect transistor are respectively connected with the input end and the output end, and the output end is also connected with the negative electrode of the battery.
Furthermore, the battery is connected in series into the component capacity grading equipment, and the component capacity grading equipment further comprises a forwarding board, wherein the forwarding board is respectively connected with the middle position machine and the MCU control unit.
Further, the bypass circuit further comprises a fuse connected in series between the anode of the battery and the drain of the fourth field effect transistor.
Furthermore, the DC/DC power module and the middle position machine, the forwarding board and the middle position machine, and the DC/DC power module and the MCU control unit are connected through CAN buses.
Further, the first field effect transistor, the second field effect transistor, the third field effect transistor and the third field effect transistor are all N-type field effect transistors.
Furthermore, the upper computer is connected with the middle computer through a network cable.
The beneficial effects of the utility model reside in that: compared with the prior art, the utility model discloses a first field effect transistor and bypass circuit parallel connection, MCU the first field effect transistor of battery voltage control work in the linear region according to the monitor cell feedback realizes that first field effect transistor switches on the reposition of redundant personnel, realizes that the voltage of battery reaches the constant voltage point, realizes the constant voltage effect, and the simple structure that this constant voltage is constituteed, and is with low costs.
[ description of the drawings ]
Fig. 1 is a prior art bypass circuit.
Fig. 2 is a schematic block diagram of the present invention.
Fig. 3 is a schematic circuit diagram of the bypass circuit of the present invention.
FIG. 4 is a circuit diagram of a plurality of bypass circuit connections according to the present invention.
[ detailed description ] embodiments
The present invention will be further described with reference to the accompanying drawings and embodiments.
Referring to fig. 2-4, an embodiment of the present invention provides a battery tandem formation and capacity grading apparatus.
The battery series connection component capacity grading equipment comprises an upper computer 1, a middle computer 2, a DC/DC power module 3, an AC/DC power module 4 and a plurality of bypass boards 5. The middle computer 2 is respectively in communication connection with the upper computer 1 and the DC/DC power module 3, and the middle computer 2 receives a control instruction of the upper computer 1 and controls the DC/DC power module 3. The DC/DC power module 3 is respectively connected with the upper AC/DC power module 4 and the bypass board 5, the AC/DC power module 4 is used for processing current after being externally connected with a power supply and then transmitting the processed current to the DC/DC power module 3, and the bypass board 5 is used for switching in and out the battery 53 and playing a role in keeping the voltage of the battery 53 constant.
The bypass board 5 is integrated with an MCU control unit 55, an input terminal 51, an output terminal 52, a first field effect transistor Q1, a bypass circuit, and a monitoring unit 54. The MCU control unit 55 is connected with the DC/DC power supply module 3, the bypass circuit is connected with the MCU control unit 55, two ends of the bypass circuit are respectively connected with the input end 51 and the output end 52, and the bypass circuit is controlled by the MCU control unit 55 to be used for switching in and charging the battery 53 and switching out the battery 53. The monitoring unit 54 is connected to the MCU control unit 55, the gate of the first field effect transistor Q1 is connected to the MCU control unit 55, the drain of the first field effect transistor Q1 is connected to the input terminal 51, and the source of the first field effect transistor Q1 is connected to the output terminal 52. The bypass boards 5 are connected in series, and the input end 51 and the output end 52 of the two ends of the bypass boards 5 after being connected in series are both connected with the DC/DC power supply module 3. And in the bypass board 5 series, the output terminal 52 connects the input terminals 51 of the adjacent bypass boards 5.
Therefore, the first field effect transistor Q1 is connected in parallel with the bypass circuit, the monitoring unit 54 is used for monitoring the voltage, the current, the capacity and the like of the battery 53, the MCU control unit 55 can control the first field effect transistor Q1 to work in a linear region through the voltage of the battery 53 fed back by the monitoring unit 54, so as to realize the conduction and shunt of the first field effect transistor Q1, realize the voltage of the battery 53 reaching a constant voltage point, realize a constant voltage function, and the constant voltage component has a simple structure and low cost.
In the present embodiment, the bypass circuit includes a second field effect transistor Q2, a third field effect transistor Q3, and a fourth field effect transistor Q4. The gates of the second field effect transistor Q2, the third field effect transistor Q3 and the fourth field effect transistor Q4 are all connected with the MCU control unit 55, the third field effect transistor Q3 and the fourth field effect transistor Q4 are connected in series in an inverted manner, and the drains at the two ends of the series are respectively connected with the input terminal 51 and the positive electrode of the battery 53. The drain and source of the second field effect transistor Q2 are connected to the input terminal 51 and the output terminal 52, respectively, the output terminal 52 also being connected to the negative pole of the battery 53. Thus, the third field effect transistor Q3, the fourth field effect transistor Q4 and the battery 53 are connected in series and then connected in parallel with the second field effect transistor Q2.
When the battery 53 is connected between the drain of the fourth field effect transistor Q4 and the output terminal 52, and the battery 53 needs to be charged or the battery 53 needs to be switched, the MCU control unit 55 controls the third field effect transistor Q3 and the fourth field effect transistor Q4 to be turned on, and controls the second field effect transistor Q2 to be turned off, and the current input by the DC/DC power module 3 sequentially passes through the input terminal 51, the third field effect transistor Q3, and the fourth field effect transistor Q4 to charge the battery 53. When the bypass boards 5 are connected in series, the current output from the DC/DC power supply module 3 is input from the input terminal 51, and the batteries 53 are charged in series. When the battery 53 is fully charged or the battery 53 needs to be switched off, the MCU control unit 55 controls the third field effect transistor Q3 and the fourth field effect transistor Q4 to be turned off, and controls the second field effect transistor Q2 to be turned on, so that the current output by the DC/DC power module 3 flows through the second field effect transistor Q2, and the battery 53 is switched off without affecting the charging of other batteries 53, thereby realizing that one DC power supply is used to charge a plurality of batteries 53, effectively reducing the volume of the battery series component-capacity device, reducing the occupied area, and reducing the operation cost. The problems that the existing charging for a plurality of batteries 53 needs to be provided with a plurality of DC/DC power supply modules 3, so that the formation and grading equipment is large in size, large in occupied area and high in operation cost can be solved.
Specifically, the reason why the first field effect transistor Q1 and the fourth field effect transistor Q4 are designed separately is as follows:
when the first field effect transistor Q1 is in the constant voltage mode, it operates in the linear region, and the device should be a field effect transistor with large volume, large internal working resistance, large heat generation, and good heat dissipation, for example, a transistor of IRFP7430PBF type, NCEP40T17AT type, etc., without limitation. And the second field effect transistor Q2 adopts a patch device, and the patch device has small volume, low heat generation and small working internal resistance.
The second field effect transistor Q2 is adapted to switch off the battery 53 and if it is operated in a constant voltage mode, it is easily damaged without heat dissipation, and therefore a first field effect transistor Q1 is used in parallel to function as a constant voltage alone, and the second field effect transistor Q2 selects a patch device.
In addition, the same device is complicated to operate in two different modes for control, and if the constant voltage module is damaged, the battery 53 switching-out mode needs to be executed to ensure that the other batteries 53 are normally charged or discharged with constant current, so that the requirement of the condition cannot be met. Therefore, the first field effect transistor Q1 is designed separately from the fourth field effect transistor Q4.
The battery 53 may be a power battery, a cylindrical battery or a pouch battery, a blade battery, etc., and is not limited thereto.
The monitoring unit 54 may include a battery temperature sampling unit for acquiring the temperature of the battery 53, a cell main voltage sampling unit for acquiring the cell main voltage of the battery 53, a probe slave voltage sampling unit for acquiring the probe slave voltage of the battery 53, and the like.
The input end 51 and the output end 52 of the two ends of the bypass boards 5 after being connected in series are connected with the DC/DC power supply module 3 through a power bus. The first field effect transistor Q1, the second field effect transistor Q2, the third field effect transistor Q3 and the fourth field effect transistor Q4 are all N-type field effect transistors, and the upper computer 1 is connected with the middle computer 2 through a network cable.
In one embodiment, a different number of fets may be connected in parallel to each of the second, third and fourth fets Q2, Q3, Q4, depending on the different current requirements. However, only one second fet Q2, one third fet Q3 and one fourth fet Q4 are required to meet the protection of the battery 53 against switching in and out and reverse connection, and more fets are meaningless and increase the cost. Just the utility model discloses a second field effect transistor Q2, third field effect transistor Q3 and fourth field effect transistor Q4 do not adopt the relay because field effect transistor itself has small, and can the accurate control, cut into and cut out battery 53 and do not have the time delay, also let constant current charging mode or constant current discharge mode cut out the electric current sudden change electric current spike that the voltage sudden change that produces arouses and can restrain.
And, the utility model discloses an all integrate on every bypass board 5 and have a MCU the control unit 55 to be used for controlling cutting into and cutting out of battery 53 on a passageway, prevent that a plurality of bypass boards 5 from only causing MCU the control unit 55 to damage the problem that then need change all passageways by the control of a MCU the control unit 55, the cost when reducing a passageway trouble also can prevent that a MCU the control unit 55 from controlling a plurality of passageways and leading to the too much problem of pencil etc..
In addition, the conventional DC/DC power supply of the parallel device is in a room with normal temperature, and the battery 53 is in a room with high temperature, so that the power line and the sampling line of the battery 53 need to be connected to the DC/DC power supply of the room with normal temperature through a wall, the excessive power lines bring great loss in the charging mode and the discharging mode in practical application, and the extremely long sampling line brings certain deviation in precision. And the utility model discloses the battery series becomes equipment and charges for each battery 53 and dispose a bypass board 5 separately, bypass board 5 separately sets up with DC/DC power module 3, then can set up DC/DC power module 3 in the room of normal atmospheric temperature, bypass board 5 sets up in the high temperature room, DC/DC power module 3 and bypass board 5 intermediate separation a thick wall, all integrated with an MCU the control unit 55 on every bypass board 5, when gathering battery 53 voltage through the monitor unit 54, the wire of battery 53 sampling shortens, can greatly improve the precision of gathering battery 53 voltage.
In an embodiment, in order to prevent the communication loss between the mid-level computer 2 and the DC/DC power module 3 caused by the control failure of the DC/DC power module 3, the battery tandem formation and capacity grading equipment further includes a forwarding board 6, and the forwarding board 6 is connected with the mid-level computer 2 and the MCU control unit 55 respectively. Thus, the information of the bypass board 5 is fed back to the intermediate computer 2, so that the on-off of the first field effect transistor Q1, the second field effect transistor Q2, the third field effect transistor Q3 and the fourth field effect transistor Q4 can be controlled conveniently, and the states of the voltage, the temperature and the like of the battery 53 can be monitored conveniently. The upper computer 1 is connected with the middle computer 2 through a network cable, and the DC/DC power module 3 is connected with the middle computer 2 and the forwarding board 6 is connected with the middle computer 2 through CAN buses.
In one embodiment, in order to prevent the battery 53 from being reversely connected or the battery 53 from being damaged due to the second fet Q2, the third fet Q3, the fourth fet Q4, and the like, a fuse F1 is further integrated with the bypass board 5, and the fuse F1 is connected in series between the positive electrode of the battery 53 and the drain of the fourth fet Q4. When the nonreactive factor occurs, the battery 53 and the battery 53 on the other bypass board 5 can be protected from the impact by the fuse F1 being blown.
In one embodiment, the MCU control unit 55 is communicatively connected to the DC/DC power module 3 via the CAN bus in order that the bypass board 5 may feed back information to the DC/DC power module 3 that is monitored by the monitoring unit 54 to facilitate control of charging of the battery 53.
The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.
Claims (7)
1. A battery tandem formation capacity dividing apparatus, comprising: the system comprises an upper computer, a middle computer in communication connection with the upper computer, a DC/DC power supply module in communication connection with the middle computer, an AC/DC power supply module connected with the DC/DC power supply module, and a plurality of bypass boards; the bypass plate is integrated with: the battery protection circuit comprises an MCU control unit connected with a DC/DC power supply module, an input end, an output end, a first field effect transistor, a bypass circuit connected with the MCU control unit and used for charging the battery and cutting out the battery, and a monitoring unit connected with the MCU control unit and used for monitoring the battery;
the grid electrode of the first field effect transistor is connected with the MCU control unit and used for keeping the voltage constant for the battery, the drain electrode of the first field effect transistor is connected with the input end, the source electrode of the first field effect transistor is connected with the output end, and two ends of the bypass circuit are respectively connected with the input end and the output end; and the input ends and the output ends of two ends of the plurality of bypass plates after being connected in series are connected with the DC/DC power supply module.
2. The battery tandem compound capacity apparatus according to claim 1, wherein the bypass circuit includes a second field effect transistor, a third field effect transistor, a fourth field effect transistor;
the grid electrodes of the second field effect transistor, the third field effect transistor and the fourth field effect transistor are all connected with the MCU control unit; the third field effect transistor and the fourth field effect transistor are connected in series in a reverse direction, and drain electrodes at two ends of the third field effect transistor and the fourth field effect transistor are respectively connected with the input end and the anode of the battery after the third field effect transistor and the fourth field effect transistor are connected in series; and the drain electrode and the source electrode of the second field effect transistor are respectively connected with the input end and the output end, and the output end is also connected with the negative electrode of the battery.
3. The battery cascading component capacity equipment of claim 2, further comprising a forwarding board, wherein the forwarding board is respectively connected with the middle position machine and the MCU control unit.
4. The battery tandem compound capacitor device of claim 3, wherein the bypass circuit further comprises a fuse connected in series between the positive electrode of the battery and the drain of the fourth field effect transistor.
5. The battery cascading component capacity equipment of claim 4, wherein the DC/DC power module and the middle position machine, the forwarding board and the middle position machine, and the DC/DC power module and the MCU control unit are connected through CAN buses.
6. The battery tandem formation and capacity division apparatus according to claim 5, wherein the first field effect transistor, the second field effect transistor, the third field effect transistor, and the third field effect transistor are all N-type field effect transistors.
7. The battery cascading component and capacity equipment of claim 6, wherein the upper computer is connected with the middle computer through a network cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120641148.9U CN214542333U (en) | 2021-03-30 | 2021-03-30 | Battery series formation and capacity grading equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120641148.9U CN214542333U (en) | 2021-03-30 | 2021-03-30 | Battery series formation and capacity grading equipment |
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| CN214542333U true CN214542333U (en) | 2021-10-29 |
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| CN202120641148.9U Active CN214542333U (en) | 2021-03-30 | 2021-03-30 | Battery series formation and capacity grading equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117154240A (en) * | 2023-10-23 | 2023-12-01 | 苏州华壹智能装备有限公司 | Battery formation system and control method thereof |
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2021
- 2021-03-30 CN CN202120641148.9U patent/CN214542333U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117154240A (en) * | 2023-10-23 | 2023-12-01 | 苏州华壹智能装备有限公司 | Battery formation system and control method thereof |
| CN117154240B (en) * | 2023-10-23 | 2024-01-30 | 苏州华壹智能装备有限公司 | Battery formation system and control method thereof |
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