CN207781830U - Battery pack - Google Patents

Battery pack Download PDF

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Publication number
CN207781830U
CN207781830U CN201721062948.5U CN201721062948U CN207781830U CN 207781830 U CN207781830 U CN 207781830U CN 201721062948 U CN201721062948 U CN 201721062948U CN 207781830 U CN207781830 U CN 207781830U
Authority
CN
China
Prior art keywords
battery pack
interface
battery
protection plate
voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201721062948.5U
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Chinese (zh)
Inventor
田伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Geil Power Technology Co Ltd
Original Assignee
Nanjing Geil Power Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Priority to CN201721062948.5U priority Critical patent/CN207781830U/en
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Publication of CN207781830U publication Critical patent/CN207781830U/en
Expired - Fee Related legal-status Critical Current
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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Abstract

A kind of battery pack; including power module, battery pack output end and the control module being electrically connected between power module and battery pack output end; control module includes battery pack protection plate; battery pack protection plate includes voltage sample and monitoring temperature interface; the cathode of each single battery passes through electric Sampling Machine monitoring temperature interface described in a voltage sample connection; for the cathode of a portion battery by voltage sample machine monitoring temperature interface described in a temperature sampling connection, the control terminal of the battery pack protection plate further includes an electric voltage equalization interface.The service switch of the utility model battery pack realizes high_voltage isolation; voltage and temperature are sent to the battery pack protection plate to carry out analysis and extend the service life cycle of battery pack by relevant control by the electrifying timing sequence of the break-make control bus of electromagnetic contactor, voltage sample circuit and the temperature sampling circuit.

Description

Battery pack
【Technical field】
The utility model is related to a kind of battery pack more particularly to a kind of battery packs of the multiple batteries in parallel connection of monitoring.
【Background technology】
It is many as China implements in electric vehicle or the implementation of hybrid electric vehicle items research plan, numerous manufacturers and research and development Multi-vendor and research and development entity has also put into a large amount of strength and has been engaged in related development project.In electric vehicle or hybrid vehicle, In order to ensure that there is driving motor enough power performance, power battery pack often there is high voltage, the voltage usually may be used Up to 300V or more.Voltage high in this way is in the case where breaking down or improper use, it is possible to produce serious adverse consequences. In order to avoid making the devices such as power battery and its current feed circuit, power-equipment cause permanent damage, while in order to which vehicle safety is examined Consider, it is necessary to which the corresponding detection of setting, control and protection circuit are to protect battery pack.Battery in vehicle in the prior art The protection circuit of packet balanced generally can not accurately control single battery in battery pack, but in battery pack multiple batteries temperature Equilibrium can influence the overall operation efficiency of battery pack, and the service life for being unfavorable for battery pack continues.
In view of drawbacks described above, it is really necessary to design a kind of new battery pack with monitoring function.
【Utility model content】
The technical problem to be solved by the utility model is to:A kind of battery pack with monitoring protection is provided.
In order to solve the above technical problems, technical solutions of the utility model are:A kind of battery pack, including power module, battery Packet output end and the control module being electrically connected between the power module and battery pack output end, the power module include The cathode of several single batteries being serially connected, the battery of the most head end forms total negative output node, the electricity of the least significant end The anode in pond forms total positive output node, and the battery pack output end includes a High voltage output interface and a low pressure output interface, The control module includes battery pack protection plate, and the battery pack protection plate includes several control terminals, and the control terminal includes electricity The cathode of pressure sampling and monitoring temperature interface, each single battery is electrically connected the electricity by a voltage sample circuit The cathode of corresponding voltage sample interface in Sampling Machine monitoring temperature interface, a portion battery of the single battery is logical Cross the temperature sampling interface that a temperature sampling circuit is electrically connected in the voltage sample machine monitoring temperature interface, the battery pack The control terminal of protection board further includes an electric voltage equalization interface, and the voltage of each single battery is adopted in the battery pack protection plate completion After sample, the voltage differences of single battery cathode part are judged by internal balance algorithm, and electrical by the electric voltage equalization interface Connect the voltage sample circuit.
Further, the control module further includes an electromagnetic contactor, and the electromagnetic contactor includes one first contact, one The control terminal in the second contact and electromagnetic touch portion, the battery pack protection plate includes contactor control port and contactor adhesion control Interface processed, the control terminal in the electromagnetic touch portion are electrically connected the contactor control of the battery pack protection plate by two-way cable Port and the contactor adhesion control interface that battery pack protection plate is connected by other two-way cable.
Further, the control module further includes current sensor, and the battery pack protection plate includes bus circuit monitoring Interface, the circuit sensor include the input terminal for being electrically connected the positive output node, a connection High voltage output interface Output end and four by cable connect the battery pack protection plate bus circuits monitor interface control output end.
Further, the battery pack protection plate is powered using a dc chopper, and the dc chopper includes height It includes the positive access for being electrically connected total positive output node to press side incoming end and low-pressure side incoming end, the high-pressure side incoming end The negative incoming end of total negative output node is held and is electrically connected, the battery pack protection plate includes power interface, the low pressure Side output end includes the positive and negative output end for the power interface that the battery pack protection plate is electrically connected.
Further, the high-pressure side incoming end of the dc chopper is electrically connected the output end of the circuit sensor and leads to It crosses the circuit sensor and is electrically connected total positive output node.
Further, one is electrically accessed between the positive incoming end and the output end of current sensor of the high-pressure side incoming end The high-pressure sides DC-DC fuse.
Further, first contact is electrically connected the low pressure output interface by a major loop fuse.
Further, the control module further includes one being electrically connected at total positive output node and the High voltage output connects Service switch between mouthful, includes a fuse in the service switch, described in a contact of the fuse is electrically connected Total positive output node, another contact are electrically connected the High voltage output interface.
Further, between two contacts of the fuse of the service switch and the High voltage output interface and the low pressure output It is reserved that high-voltage interlocking is equipped between interface.
Further, the control terminal of the battery pack protection plate includes program debugging interface and CAN communication interface, described program Debugging interface and the CAN communication interface by the connection of double glue shielding lines by being placed in the interface on the outside of the battery pack.
Compared with prior art, the service switch of the utility model battery pack can realize high_voltage isolation, electromagnetic contactor It is described that break-make can control the electrifying timing sequence of busbar, voltage sample circuit and the temperature sampling circuit to be sent to voltage and temperature Battery pack protection plate, battery pack protection plate analyze data to extend the service life cycle of battery pack by control.
【Description of the drawings】
Fig. 1 is the module connection diagram of the battery pack of the utility model.
Fig. 2 is the circuit connection schematic diagram of the battery pack of the utility model.
Fig. 3 is the enlarged diagram of the power module of battery pack in Fig. 2.
Fig. 4 is the enlarged diagram after battery pack removal power module in Fig. 2.
Fig. 5 is the method schematic diagram of the battery pack protection plate of battery pack in Fig. 2.
【Specific implementation mode】
It please refers to Fig.1 to shown in Fig. 5, the utility model power protection module 100 is for controlling and protecting in a battery pack The power module 200 that forms of the single battery being serially connected by 12.The battery pack is equipped with battery pack output end 300. The power protection module 100 includes the battery pack protection plate 10 for being electrically connected the power module 200, is controlled by the battery Protection board 10 and control module 30 and the CAN signal processing being connected between the power module 200 and battery pack output end 300 Module 40.The battery pack output end 300 includes that a High voltage output interface 301 and a low pressure output interface 302, the high pressure are defeated It is equipped with high-voltage interlocking between outgoing interface 301 and the low pressure output interface 302 and reserves (not indicating), realizes high voltage control interlocking.
The power module 200 includes the first battery 201, the second battery 202, third battery 203, the 4th battery 204, the Five batteries 205, the 6th battery 206, the 7th battery 207, the 8th battery 208, the 9th battery 209, the tenth battery the 210, the 11st Battery 211, the 12nd battery 212, the 13rd battery 213, the 14th battery 214, the 15th battery 215 and the 16th battery 216.First battery 201 to second battery 212 is sequentially connected in series in sequence.First battery 201, the second battery 202, third battery 203 and the 4th battery 204 are arranged as a row, and so on, every four batteries are arranged as a row, the electricity Source module 200 includes four row's batteries altogether.The cathode of first battery 201 forms total negative output node of battery module 200 2011, the anode of the 16th battery 216 forms total positive output node 2121 of battery module 200.
In the present embodiment, battery uses high-energy type 50Ah rechargeable lithium batteries.The specified electricity of the single battery Pressure is 3.2V.Battery charging when operating temperature range be:- 20 DEG C~60 DEG C.Operating temperature range of the battery in electric discharge For:0 DEG C~45 DEG C.The charging ability of battery is ranging from:100A~150A.The discharge capability of battery is ranging from:150A~250A.
The single-unit rated capacity in parallel for the battery module 200 that 16 single batteries are constituted is 600Ah, rated voltage It is 51.2V.Continuous discharge electric current is 400A, and peak discharge current is 500A (in 30s), and it is 200A, peak value to continue charging current Charging current (in 15s) is 300A.The use temperature range of battery is:- 20 DEG C~45 DEG C.The operating temperature range of battery is:- 40 DEG C~85 DEG C.
The battery pack protection plate 10 includes several control terminals 101.The control terminal 101 includes electric voltage equalization interface 1011, voltage sample and monitoring temperature interface 1012, bus current monitoring interface 1013, contactor control interface 1014, contact Device adhesion control interface 1015, the power interface 1016 of battery pack protection plate 10, program debugging interface 1017, CAN communication interface 1018 and other control interfaces 1019.The power interface 1016 includes anode interface and cathode interface (not indicating).It is described its His control interface 1019 includes that a power supply wakes up interface 1010.
The cathode of each single battery is all made of the voltage sample and temperature prison of cable connection battery pack protection plate 10 Corresponding voltage sample interface (not shown) in control interface 1012 is realized with forming 16 road voltage sample circuits 21 for each Single battery carries out voltage acquisition.The cathode of the two of which single battery of each row's battery is connected by cable simultaneously The voltage sample of battery pack protection plate 10 and the corresponding temperature sampling interface (not shown) of monitoring temperature interface 1012 are to form 8 Road temperature sampling circuit 22 realizes that the two of which single battery for each row's battery carries out selected temperature acquisition.At this In embodiment, second battery 202, the 4th battery 204, the 6th battery 206, the 8th battery 208, the tenth battery 210, The cathode of 12 batteries 212, the 13rd battery 213 and 215 battery of the 15th battery connects corresponding temperature sampling by cable Interface.The voltage sample circuit 21 and the temperature sampling circuit 22 collectively form and are connected to the power module 200 and institute Battery cell voltage, the temperature sampling circuit 20 between battery pack protection plate 10 are stated, to realize to single in battery module 100 The detecting of battery.
The electric voltage equalization interface 1011 of the battery pack protection plate 10 is electrically connected the 16 road voltage sample circuit 21 With by the adjustment of the voltage of the cathode of each single battery, so that it is reached an agreement.
The control module 30 is realizing the high pressure to battery module 200, overcurrent, cross the protection putting, overcharge.The control Molding block 30 includes an electromagnetic contactor 31, a current sensor 32, a service switch 33 and a major loop fuse 34.
The current sensor 32 includes one being electrically connected the input terminal (not indicating) of total positive output node 2121, one Output end (not indicating) and four bus currents that the battery pack protection plate 10 is connected by cable monitor the control of interface 1013 Output end (not indicating) processed.The battery pack protection plate 10 is by sampling the current value of four control output ends to realize pair The current monitoring of battery module 200.
The electromagnetic contactor 31 includes contact 311, contact 312 and electromagnetic touch portion 313.The contact 312 electrically connects Connect total negative output node 2011 of the battery module 200.The control terminal in the electromagnetic touch portion 313 is electrical by two-way cable It connects the contactor control interface 1014 of the battery pack protection plate 10 and battery pack protection plate is connected by other two-way cable 10 contactor adhesion control interface 1015.The two-way circuit for being connected to contactor control interface 1014 realizes that battery pack is protected The control of backplate 10 contact 311, contact 312 switched on and off, and then control the electrifying timing sequence of the power module 200.Institute The two-way circuit realization battery pack protection plate 10 for being connected to contactor adhesion control port 1015 is stated to the viscous of battery contactor 31 Even detect.The contact 311 is electrically connected the low pressure output interface 302 by a major loop fuse 34.
The service switch 33 is electrically connected at the output end and the High voltage output interface 301 of the current sensor 32 Between.Include a fuse 331 in the service switch 33, a contact of the fuse 331 is electrically connected the electric current The output end of sensor 32, another contact are electrically connected the High voltage output interface 301.It is additionally provided in the service switch 33 High-voltage interlocking is reserved, realizes high voltage control interlocking.
The contact 311 of the electromagnetic contactor 31 connects the low pressure output interface by the major loop fuse 34 302, to prevent the output current overcurrent of power module 200.
The operating voltage of the battery pack protection plate 10 is 12VDC, and low-voltage-powered consumption is less than 150W.The battery pack is protected Backplate 10 using a dc chopper 102 to total negative output node 2011 of power module 200 and total positive output node 2121 it Between output voltage converted to export the voltage of 12V, and be correspondingly connected with the power interface of the battery pack protection plate 10 1016 anode interface and cathode interface realizes the power supply to battery pack protection plate 10.The dc chopper 102 includes high pressure Side incoming end 1021 and low-pressure side output end 1022.The high-pressure side incoming end 1021 includes being electrically connected the current sensor The positive incoming end (not indicating) of 32 output end and the negative incoming end (not indicating) for being electrically connected total negative output node 2011. The low-pressure side output end 1022 include be electrically connected the battery pack protection plate 10 power interface 1016 it is positive and negative defeated Outlet (does not indicate).It is electrically accessed between the positive incoming end and the output end of current sensor 32 of the high-pressure side incoming end 1021 One high-pressure sides DC-DC fuse 35, to prevent the on high-tension side overcurrent of dc chopper 102.
The program debugging interface 1017 of the battery protecting plate 10 is placed in by the connection of double glue shielding lines outside the battery pack The debugging interface 3001 of side.The CAN communication interface 1018 of the battery protecting plate 30 is placed in described by the connection of double glue shielding lines The corresponding interface position 3003 of low-voltage interface 3002 on the outside of battery pack.Other control interfaces 1019 of the battery protecting plate 30 By cable connect described in be placed in other interface positions 3004 of low-voltage interface 3002 on the outside of the battery pack.Double glue shieldings Line and the cable being connected between other control interfaces 1019 and low-voltage interface and debugging interface 3001 and low-voltage interface 3002 constitute the CAN signal processing module 40.
The utility model power protection module 100 can pull up service switch 33 first when the battery pack repairs, So that high tension loop is isolated with power module 200.When institute's battery pack charges and discharges, it can be protected by battery pack Backplate 10 is to control the break-make of electromagnetic contactor 31, and then the electrifying timing sequence of control bus.The voltage sample circuit 21 and institute It states temperature sampling circuit 22 and voltage and temperature is sent to the battery pack protection plate 10, the battery pack protection plate 10 is by data It carries out analysis and the vehicle control system being equipped with by the battery pack is fed back to by CN communication interfaces 1018.The battery pack protection The electric voltage equalization interface 1011 of plate 10 is electrically connected the 16 road voltage sample circuit 21 with by each single battery The adjustment of the voltage of cathode, so that it is reached an agreement.Realize the judgement of the state-of-charge difference between adjacent two single battery, And the extra electricity of the higher single battery of electricity is transferred to by the lower single electricity of the electricity according to internal balance algorithm Pond, to extend the service life cycle of battery pack.
The utility model battery pack is detectd by 32 circuit for detecting total current of current sensor by voltage acquisition circuit 21 The voltage for surveying the single battery in power module 200 is filled in the single battery low battery needs detected in power module 200 When electric, battery pack protection plate 10 can send out warning reminding charging in time, to prevent battery from damaging making for battery because of over-discharge Use the service life.The information of voltage of the single battery is acquired by voltage acquisition circuit 21 and is stored in battery pack protection plate 10 In memory in interior battery detecting IC, data can be binary format data, according to battery management system agreement, need pair Data are converted, and the rule formulated according to agreement transmits data by program debugging interface 1017 to battery pack outside.And Battery pack protection plate 10 also has the function of power prediction, transmitting fault information and correlation estimation.
The foregoing is merely a kind of embodiment of the utility model, it is not all of or unique embodiment, this field is general Any equivalent variation that logical technical staff takes technical solutions of the utility model by reading the utility model specification, It is that the utility model claims are covered.

Claims (10)

1. a kind of battery pack, including power module, battery pack output end and it is electrically connected at the power module and battery pack is defeated Control module between outlet, the power module include several single batteries being serially connected, the battery of the most head end Cathode forms total negative output node, and the anode of the battery of the least significant end forms total positive output node, the battery pack output end Including a High voltage output interface and a low pressure output interface, it is characterised in that:The control module includes battery pack protection plate, institute It includes several control terminals to state battery pack protection plate, and the control terminal includes voltage sample and monitoring temperature interface, each list The cathode of a battery is electrically connected by a voltage sample circuit corresponding in the voltage sample and monitoring temperature interface The cathode of voltage sample interface, a portion battery of the single battery passes through described in temperature sampling circuit electric connection The control terminal of temperature sampling interface in voltage sample and monitoring temperature interface, the battery pack protection plate further includes that a voltage is equal Weigh interface, after the battery pack protection plate is completed to the voltage sample of each single battery, is judged by internal balance algorithm single The voltage differences of a battery cathode part, and the voltage sample circuit is electrically connected by the electric voltage equalization interface.
2. battery pack as described in claim 1, it is characterised in that:The control module further includes an electromagnetic contactor, described Electromagnetic contactor includes one first contact, one second contact and electromagnetic touch portion, and the control terminal of the battery pack protection plate includes Contactor control port and contactor adhesion control interface, the control terminal in the electromagnetic touch portion are electrically connected by two-way cable The contactor control port of the battery pack protection plate is simultaneously viscous by the contactor of other two-way cable connection battery pack protection plate Even control interface.
3. battery pack as described in claim 1, it is characterised in that:The control module further includes current sensor, the electricity Pond group protection board includes bus circuit monitoring interface, and the current sensor includes the input for being electrically connected the positive output node It holds, the output end and four bus circuits that the battery pack protection plate is connected by cable of a connection High voltage output interface Monitor the control output end of interface.
4. battery pack as claimed in claim 3, it is characterised in that:The battery pack protection plate is carried out using a dc chopper Power supply, the dc chopper include high-pressure side incoming end and low-pressure side output end, and the high-pressure side incoming end includes electrically connecting It connects the positive incoming end of total positive output node and is electrically connected the negative incoming end of total negative output node, the battery pack is protected Backplate includes power interface, and the low-pressure side output end includes the power interface that the battery pack protection plate is electrically connected Positive and negative output end.
5. battery pack as claimed in claim 4, it is characterised in that:The high-pressure side incoming end of the dc chopper is electrically connected The output end of the current sensor is simultaneously electrically connected total positive output node by the current sensor.
6. battery pack as claimed in claim 5, it is characterised in that:The positive incoming end and current sense of the high-pressure side incoming end The high-pressure sides a DC-DC fuse is electrically accessed between the output end of device.
7. battery pack as claimed in claim 2, it is characterised in that:First contact is electrically connected by a major loop fuse Connect the low pressure output interface.
8. battery pack as described in claim 1, it is characterised in that:The control module further include one be electrically connected at it is described total Service switch between positive output node and the High voltage output interface, the interior service switch includes a fuse, described molten One contact of disconnected device is electrically connected total positive output node, another contact is electrically connected the High voltage output interface.
9. battery pack as claimed in claim 8, it is characterised in that:It is between two contacts of the fuse of the service switch and described It is reserved that high-voltage interlocking is equipped between High voltage output interface and the low pressure output interface.
10. battery pack as described in claim 1, it is characterised in that:The control terminal of the battery pack protection plate includes program tune It tries mouth and CAN communication interface, described program debugging interface and the CAN communication interface are connected by passing through double glue shielding lines The interface being placed on the outside of the battery pack.
CN201721062948.5U 2017-08-24 2017-08-24 Battery pack Expired - Fee Related CN207781830U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721062948.5U CN207781830U (en) 2017-08-24 2017-08-24 Battery pack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721062948.5U CN207781830U (en) 2017-08-24 2017-08-24 Battery pack

Publications (1)

Publication Number Publication Date
CN207781830U true CN207781830U (en) 2018-08-28

Family

ID=63218303

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721062948.5U Expired - Fee Related CN207781830U (en) 2017-08-24 2017-08-24 Battery pack

Country Status (1)

Country Link
CN (1) CN207781830U (en)

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GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20180828

Termination date: 20190824

CF01 Termination of patent right due to non-payment of annual fee