CN203840036U

CN203840036U - Boost-type storage battery group

Info

Publication number: CN203840036U
Application number: CN201420276305.0U
Authority: CN
Inventors: 耿直
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-05-28
Filing date: 2014-05-28
Publication date: 2014-09-17
Anticipated expiration: 2024-05-28

Abstract

The utility model introduces a boost-type storage battery group which is formed by storage battery modules formed by a plurality of signal storage batteries connected in series, a load capacitor, DC-DC converters, storage battery module branch charging controllers, storage battery module monitor controllers, a head monitor, a displacement sensor and temperature sensors, so that a plurality of working modes of the boost-type storage battery group are realized, all storage battery modules in the formed boost-type storage battery group are allowed to be isolated mutually and work independently in the charging and discharging process, the mutual influence of the storage battery modules after group forming can be prevented, excessive charging and discharging of the signal storage batteries can be prevented, and inherent high-voltage phenomena in the storage battery group is prevented; the life span and application security of the storage battery group are improved; and the storage battery group has the advantages of high practicality and convenient implement.

Description

Boost type batteries

Technical field

The utility model is boost type batteries, belongs to accumulator of electric car art field in groups.

Background technology

In existing accumulator of electric car burst mode, for meeting the requirement of load voltage, be all to adopt the mode of cell batteries and battery module series boosting to be combined the batteries that obtains the desired high voltage output of load; Due to the restriction of the current production technology of storage battery and technique, cause the technical indicator consistency of each cell batteries poor, influencing each other after in groups, there is following defect in the high tension battery group therefore obtaining in the mode of series connection battery module:

In being carried out to discharge process, batteries easily make some cell batteries wherein occur overdischarge phenomenon; In being carried out to charging process, batteries easily make some cell batteries wherein occur the phenomenon of overcharging; Although switch and insurance measure can be set in batteries discharge loop, the in the situation that of needs, turn-off the electric discharge work of batteries, but because the reason of structure of series boosting mode own makes the intrinsic high pressure of existing of batteries, therefore application safety is had to certain influence.

Summary of the invention

For convenience of narration, the individual name in the utility model, parameter symbol and dependency relation are done to following introduction:

Cell batteries: for forming each the minimum secondary battery unit in battery module, also comprise storage battery in parallel by a plurality of cell batteries and that form;

Battery module: refer to be connected and the storage battery that forms by a plurality of cell batteries, its output voltage is lower than the output voltage of batteries;

High tension battery group: the high voltage output batteries that refers to be composed in series by a plurality of battery modules, the output voltage of high tension battery group is higher than the output voltage of single battery module wherein;

Boost type batteries: refer to by a plurality of battery modules, by the batteries that after independent DC-DC converter boost, also stream forms;

In view of the foregoing, the purpose of this utility model is to propose a kind of boost type batteries, adopt and a plurality ofly by cell batteries, be composed in series low tension battery module, then to each low tension battery module, adopt the working method of independent DC-DC converter boost to reach the required voltage indexes of load, and the output current after boosting is merged the method for work of output and obtained boost type batteries, make each battery module mutually to isolate and to work alone, can avoid each battery module influencing each other in discharging and recharging work, avoid excessively discharging and recharging of cell batteries wherein, because battery module is lower than the output voltage after combining, and can eliminate high voltage as long as turn-off the work of DC-DC converter, therefore can avoid the intrinsic high-pressure phenomena in batteries, improve battery life and application safety, and there is the feature easily of implementing.

For achieving the above object, the utility model is introduced a kind of boost type batteries, contain a plurality of battery modules that formed by cell batteries series connection, it is characterized in that having a plurality of battery modules charge controller, a plurality of DC-DC converter, a plurality of battery module monitor controller, a total monitor, a load capacitor, a displacement transducer along separate routes, each cell batteries has a temperature sensor, in each DC-DC converter, there are an input current transducer, an output current transducer, the current output terminal of each battery module is connected with a DC-DC converter input, and each DC-DC converter output terminal is connected with load capacitor, each battery module along separate routes charge controller has multipair charge independence output, the every a pair of charge independence output of same battery module charger respectively with same battery module in a cell batteries be in parallel, temperature sensor, input current transducer, each data output end of output current transducer is connected with the data acquisition input of battery module monitor controller respectively, the operating state switch control end of each DC-DC converter, input current adjustable side is connected with corresponding battery module monitor controller control output end respectively, the parameter output of displacement transducer, one group of signal input output end of each battery module monitor controller, battery module along separate routes one group of signal input output end of charge controller is connected with the pilot signal input/output terminal of total monitor respectively.

Operation principle of the present utility model is: adopt Series Sheet accumulator body to form battery module, each DC-DC converter carries out after respectively the output voltage of each battery module being boosted and flows output, so just obtained the boost type batteries of output voltage higher than each battery module, in electric discharge operating state, between each battery module, due to the buffer action of DC-DC converter, do not had and influence each other, in electric discharge work, monitor the current voltage of each cell batteries, when the current voltage of certain cell batteries is during lower than set cell batteries discharge voltage limit value, while exceeding the scope of cell batteries discharge voltage limit value, close the output of the DC-DC converter that the battery module at this cell batteries place connects, close the input and output electric current of DC-DC converter that the battery module at this cell batteries place connects or the output current of the battery module at this cell batteries place, so just avoid the overdischarge phenomenon of each cell batteries, and other, the battery module at the place of each cell batteries of current voltage in normal condition continues electric discharge, maintain the output services of boost type batteries, under electric discharge operating state, if the Current Temperatures parameter value of certain cell batteries has exceeded the cell batteries working temperature limit value arranging, or the current voltage parameter value of certain cell batteries exceeds set cell batteries discharge voltage limit value, battery module monitor controller is closed the input and output electric current of the DC-DC converter that the battery module at this cell batteries place connects, be equivalent to close the electric current output of battery module, so just avoided because the deleterious effects that under indivedual cell batteries ambient temperature effect, accumulators group is brought, under electric discharge operating state, if the shock value of current battery module, impact value, location status value, translational speed value has exceeded the vibrations limit value of the battery module setting, impact limit value, location status limit value, translational speed limit value, total monitor is by the input and output electric current of the closeall DC-DC converter of all battery module monitor controllers, or under electric discharge work closed condition, total monitor cuts out the input and output electric current of all DC-DC converters by each battery module monitor controller, that is: total monitor cuts out the transformation output services of all DC-DC converters by each battery module monitor controller, also be equivalent to the electric current output of closeall battery module, owing to having closed the input and output electric current of DC-DC converter, be to adopt the mode that stops the work of DC-DC converter transformation to be achieved, and close after DC-DC converter, boost type batteries no longer includes high voltage output, inherent voltage in boost type batteries is the voltage of battery module, and when battery module formula is set, adopt output voltage relatively lower than the battery module of the output voltage of DC-DC converter, as adopted 12V or the battery module below safe voltage, therefore this boost type batteries does not have down the hidden danger of intrinsic high pressure in off position, under charging operating state, each cell batteries in each battery module is taked to the method for work of charge independence, when the voltage parameter of certain cell batteries wherein or temperature parameter exceed the allowed band of the cell batteries charging voltage limit value that sets or cell batteries working temperature limit value, storage battery charge controller is closed the charging to this cell batteries, while so just having avoided boost type batteries to charge, there is overcharge condition in indivedual cell batteries, and then avoided boost type batteries to reduce the phenomenon in life-span.

Accompanying drawing explanation

Fig. 1 is that the boost type batteries of the utility model one embodiment forms electrical schematic diagram;

Fig. 2 is the formation electrical schematic diagram of the battery module shunt charge controller of the utility model one embodiment;

Fig. 3 is the battery module pie graph of the utility model one embodiment;

Fig. 4 is the formation electrical schematic diagram of the utility model one embodiment DC-DC converter;

In Fig. 1, Fig. 2, Fig. 3 and Fig. 4, for the parts with same function, in each accompanying drawing, adopt identical numbering to represent, to avoid numbering too much to bring confusion.

Embodiment

Take below accompanying drawing as example illustrates embodiment of the present utility model:

Fig. 1 is that the boost type batteries of the utility model one embodiment forms electrical schematic diagram, wherein:

A is battery module charge controller along separate routes, B is battery module, adopts a plurality of conventional cell batteries series connection and formation, C is DC-DC converter, and its circuit principle of compositionality refers to shown in accompanying drawing 2, D is load capacitor, adopts large value capacitor and withstand voltage and DC-DC converter output voltage to match, E is battery module monitor controller, adopts the microprocessor system with data acquisition interface to form, F is total watch-dog, adopts the microprocessor with data acquisition interface and display to form, each battery module along separate routes each charging output of charge controller respectively with a cell batteries phase and connect, the current output terminal of each battery module is connected with the low-tension current input of a DC-DC converter, the high-tension current output of all DC-DC converters is all connected with load capacitance, the output voltage terminal of each cell batteries, output current sensor output signal end, temperature sensor output signal end, displacement transducer output signal end is all connected with the signals collecting input of battery module monitor controller and total monitor respectively, the operating switch control end of DC-DC converter and output current regulate control end to be connected with the control output end of battery module monitor controller respectively,

Fig. 2 is the formation electrical schematic diagram of the battery module shunt charge controller of the utility model one embodiment, wherein:

A is battery module charge controller along separate routes, and A1, A2, A3, A4, An are module charging output; H1, H2, H3 .., Hn are cell batteries charging current transducer, G is multi-channel charger, G1-G1 ' wherein, G2-G2 ', G3-G3 ' ..., Gn-Gn ', be the output that independently charges separately, so-called charge independence output, be each to the charging output current of charging output and voltage for separately according to the adjusting of charging of the state of the charging load of oneself, do not produce and influence each other; I is charging current collection signal output port; Inner annexation as shown in the figure, wherein G1, G2, G3 ..., Gn is respectively by being connected with A1, A2, A3, A4, An module charging output after current sensor; G1 ', G2 ', G3 ' ..., Gn ' is connected with A2, A3, A4, An module charging output respectively; I is connected with the data acquisition signal input of battery module monitor controller E;

Fig. 3 is the battery module pie graph of the utility model one embodiment, wherein:

B1, B2, B3 ..., Bn is for forming the cell batteries of battery module, the large capacity single accumulator body that this cell batteries also can be formed in parallel for the cell batteries of a plurality of low capacity; The terminal voltage output of each cell batteries is connected with the data acquisition signal input of battery module monitor controller E; Battery module along separate routes A1, A2, A3, A4, the An of charge controller A is that module charging output is connected with the both positive and negative polarity of each cell batteries of battery module respectively;

Fig. 4 is the formation electrical schematic diagram of the utility model one embodiment DC-DC converter, wherein:

C is DC-DC converter, and C1 is input current transducer, and C2 is DC-DC DC booster converter, and C3 is output current transducer, and input current transducer, DC-DC DC booster converter, output current transducer are connected in series mutually; Each current sensor signal output, DC-DC DC converter operating switch control end and output current adjustable side are connected with data acquisition signal input or the control signal output of battery module monitor controller E respectively;

According to components and parts shown in accompanying drawing 1, Fig. 2, Fig. 3 and Fig. 4 and module composition and annexation, and by the described installation of explanation and connect temperature sensor, displacement transducer, complete modules and device interconnect and for total watch-dog, battery module, charge controller and battery module monitor controller establishment relative program software can complete boost type batteries of the present utility model along separate routes.

The utility model has been introduced a kind of by a plurality of battery modules that consist of cell batteries series connection, load capacitor, DC-DC converter, battery module is charge controller along separate routes, battery module monitor controller, , total monitor, displacement transducer, the boost type batteries that temperature sensor forms, realized the multiple method of work of boost type batteries, each battery module in the boost type batteries that makes to form can mutually be isolated and work alone in charge and discharge process, can avoid battery module influencing each other after in groups, avoid excessively discharging and recharging of cell batteries wherein, avoid the intrinsic high-pressure phenomena in batteries, improved battery life and application safety, and have practical, implement feature easily.

Claims

1. a boost type batteries, contain a plurality of battery modules that formed by cell batteries series connection, it is characterized in that having a plurality of battery modules charge controller, a plurality of DC-DC converter, a plurality of battery module monitor controller, a total monitor, a load capacitor, a displacement transducer along separate routes, each cell batteries has a temperature sensor, in each DC-DC converter, there are an input current transducer, an output current transducer, the current output terminal of each battery module is connected with a DC-DC converter input, and each DC-DC converter output terminal is connected with load capacitor, each battery module along separate routes charge controller has multipair charge independence output, the every a pair of charge independence output of same battery module charger respectively with same battery module in a cell batteries be in parallel, temperature sensor, input current transducer, each data output end of output current transducer is connected with the data acquisition input of battery module monitor controller respectively, the operating state switch control end of each DC-DC converter, input current adjustable side is connected with corresponding battery module monitor controller control output end respectively, the parameter output of displacement transducer, one group of signal input output end of each battery module monitor controller, battery module along separate routes one group of signal input output end of charge controller is connected with the pilot signal input/output terminal of total monitor respectively.