CN102169166A - Battery pack replacing device and method in simulation test - Google Patents
Battery pack replacing device and method in simulation test Download PDFInfo
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- CN102169166A CN102169166A CN2011100313163A CN201110031316A CN102169166A CN 102169166 A CN102169166 A CN 102169166A CN 2011100313163 A CN2011100313163 A CN 2011100313163A CN 201110031316 A CN201110031316 A CN 201110031316A CN 102169166 A CN102169166 A CN 102169166A
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- 238000012360 testing method Methods 0.000 title claims abstract description 18
- 238000004088 simulation Methods 0.000 title claims abstract description 17
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- 230000009466 transformation Effects 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 5
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- 230000000873 masking effect Effects 0.000 claims description 2
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Abstract
The invention a battery pack replacing device and method in a simulation test. The device comprises a battery module and a corresponding battery management module. In the method, n single batteries which are produced in the same batch and form a tested battery pack are connected in series into a battery module; the amplification factor of a voltage sampling circuit in a battery management system of the tested battery pack is adjusted to b/n; the power wire of the battery module is wound on a current sensor in the battery management system for a turns in the same direction, thus the battery management module is obtained after reform; the tested battery pack comprises a parallel modules and each parallel module is formed by connecting b single batteries in series, or the tested battery pack comprises b tandem modules and each tandem module is formed by connecting a single batteries in parallel, wherein a, b and n are all natural numbers. According to the replacing device and the method thereof, the tested battery pack in the simulation test can be replaced flexibly, accurately, simply and efficiently by combining with a corresponding equivalent algorithm and the advantages of low equipment requirement, wide application range, energy saving and environmental friendliness are obtained.
Description
Technical field
The present invention relates to electrokinetic cell l-G simulation test, and in particular to battery pack replacing device and its method in a kind of l-G simulation test.
Background technology
Now, electric automobile and hybrid vehicle are more and more used as its energy-storage units to substitute or part replacing gasoline and internal combustion engine using using the battery pack constituted after multiple cells and series connection.In order that electric automobile and hybrid vehicle approach, meet or exceed orthodox car, battery need be managed by battery management system.And in battery management system intelligent control program exactly current development key areas, its design and optimize all need by substantial amounts of l-G simulation test and experiment obtain experimental data, the battery pack with battery management system is directly connected in electric automobile（Containing hybrid vehicle）Tested, cost height, cycle length, efficiency are low, this is unworkable in design early stage.Another method, battery pack is connected to battery simulation system, the battery work of simulated automotive actual motion, useful data is obtained by l-G simulation test, cost is relatively low, efficiency is of a relatively high, but the general capacity of battery pack is big, charged/discharged electric current is big, requires high to testing equipment, cost height, inefficient, space-consuming are big, while also dumb and energy-conserving and environment-protective.
The content of the invention
The technical problem to be solved in the invention is how to provide battery pack replacing device and its method in a kind of l-G simulation test, and cost is lower, more efficient and energy-conserving and environment-protective on the basis of battery simulation experiment is met.
First technical problem of the present invention is so solved：Battery pack alternative in a kind of l-G simulation test is built, is comprised the following steps：
The same batch cell of the tested battery pack of n composition is concatenated into battery module；
The multiplication factor of voltage sampling circuit in the battery management system of tested battery pack is adjusted to again, and by the power electric wire of battery module, equidirectional winding a is enclosed on current sensor in the battery management system, and the corresponding battery management module of the battery module is used as after transformation；
The tested battery pack includes a parallel module, each parallel module and formed by b cell concatenation, or the tested battery pack is formed in parallel including b serial module structure, each serial module structure by a cell, and a, b, n are natural number.
The alternative provided according to the present invention, the battery module electric discharge or charging current are
, voltage is
,It is to be tested the corresponding equivalent electric discharge of battery pack or charging current,It is the corresponding equivalent voltage of tested battery pack.
The alternative provided according to the present invention, according to the charging and recharging model of tested battery pack
Obtain the charging and recharging model of the battery module
, wherein：T is the working time, and SOC is the dump energy of tested battery pack or the battery module.
The alternative provided according to the present invention, the transformation also includes masking cell replacement part in the battery management system.
Another technical problem of the present invention is so solved：Battery pack replacing device in a kind of l-G simulation test is built, including：
Battery module, the same batch cell that tested battery pack is constituted by n is concatenated into；
Battery management module, the control connection battery module is formed by the battery management system transformation for being tested battery pack：The multiplication factor of its voltage sampling circuit is original times, and equidirectional winding a is enclosed the power electric wire of the battery module on current sensor in the battery management system；
The tested battery pack includes a parallel module, each parallel module and formed by b cell concatenation, or the tested battery pack is formed in parallel including b serial module structure, each serial module structure by a cell, and a, b, n are natural number.
The replacement device provided according to the present invention, n is preferably 2-9.
Battery pack replacing device and its method in the l-G simulation test that the present invention is provided, tested battery pack is substituted using the same batch cell of the tested battery pack of n composition, the tested battery cell management system of transformation and correspondence equivalent algorithm, the rated operational current of so corresponding charge-discharge modules can be original times, equipment requirement is low, wide adaptation range, test is flexible, further energy-conservation, efficient, environmental protection.
Brief description of the drawings
Further the present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings：
Fig. 1 is a kind of battery pack replacing device application system attachment structure schematic diagram of the present invention；
Fig. 2 is the charge and discharge control program circuit schematic diagram of control alternative module in Fig. 1.
Embodiment
Below, the concrete application with reference to battery pack replacing device of the present invention in SOC computational accuracy context of detection illustrates the present invention：
As shown in figure 1, this concrete application is the detection of battery pack SOC computational accuracies, the system includes (i) battery module, (ii) battery management module, (iii) temperature control device, (iv) discharge module, (v) charging module, (vi) control detection module and (vii) host computer, wherein：
(i) battery module
Same batch cell n of tested battery pack are constituted by selection（n<10）It is composed in series, n values are influenceed by battery management module ECU supply voltages and voltage sampling circuit for battery.N values are smaller, then power needed for testing is smaller；
(ii) battery management module
It is to be obtained after the battery management system of tested battery pack is made into following modification, the tested battery pack includes a parallel module, each parallel module is formed by b cell concatenation,（The tested battery pack is made up of b block coupled in series, and each module is formed in parallel by a cell）：
1. cell detection part is masked；
2. the multiplication factor of original voltage sampling circuit is multiplied by again；
Example：Tested battery voltage is Vi, and the voltage that microprocessor AD interfaces are output to after original voltage sampling circuit is Vo, then the multiplication factor of original voltage sampling circuit is；After changing sample circuit, when the voltage of battery module is
When, the voltage that microprocessor AD interfaces are output to after new voltage sampling circuit is still Vo；
3. by the power electric wire of battery module, equidirectional winding a is enclosed on the current sensor of battery management system；
(iii) temperature control device
Environment temperature for controlling battery module and battery management module, to detect battery management system is calculated for battery pack SOC under different temperatures precision；
(iv) charging module
For the charging of battery module, charging current can be controlled by communication bus, and discharge module is together to simulate the charge status of battery under actual automobile running working condition；
(v) discharge module
For the electric discharge of battery module, the big I of discharge current is controlled by communication bus, and charging module is together to simulate the charge status of battery under actual automobile running working condition；
(vi) detection module is controlled
Carry out charge and discharge control and obtain the information of battery management module；
(vii) host computer
For showing, storing, processing data；
Remarks：(vi) control detection module and (vii) host computer can be merged together.
Further, the System Working Principle and specific SOC detection methods include：
101）The charging and recharging model of battery pack is obtained by being measured under analog simulation or actual condition
, under identical automobile circulating driving cycle, in order to ensure the balance of battery electric quantity, different battery pack SOC values may result in different battery set charge/discharge electric currents；
102）Determine the charging and discharging currents of battery module, mode input is established into control detection module, to control charging module and discharge module（Battery module dischargesJust, to charge
It is negative）；
103）Total dry run time, battery pack rated capacity are set in control detection module
, battery pack standard discharge current
, battery pack standard discharge cut-off voltage
（I.e. at room temperature, when battery pack is discharged to standard discharge cut-off voltage with standard discharge current, battery pack SOC is 0%）；
104）Battery module environment temperature is set to be constant at desired value according to detection demand regulation temperature control device
；
105）Activation system, starts testing process；Battery management module is initialized, the information such as battery module voltages, electric current, temperature, SOC are exported according to agreement, detection module is controlled to export charging and discharging currents control information to charging module and discharge module according to battery module information and the internal charging and recharging model set up, charging module exports battery charge according to the control information regulation power supply received, and discharge module is according to the control information regulation load output battery discharge current received；
106）Reached between when the system is operated after the setting time, control detection module control charging module and discharge module stop discharge and recharge, and the SOC value of record now battery management module output is c%；
107）Temperature control device is closed, resting batteries for a period of time, make it be returned to room temperature；
108）Control detection module control discharge module with
Constant-current discharge to battery module voltages are
, this constant-current discharge time is recorded, then the true SOC value of battery module is before constant-current discharge, battery management module is to SOC value calculation error
；
109）Repeat step 101 ~ 108）, you can multigroup battery management module is obtained to battery module SOC value calculation error value, and it is the computational accuracy of SOC value to take wherein maximum, that is, be equivalent to tested battery cell management system is in environment temperature
, battery pack is under running situation under state of cyclic operation, to the computational accuracy of battery pack SOC value；
110）The different environment temperature of setting and battery pack working time, repeat step 101 ~ 109）, you can obtain SOC value computational accuracy of the battery management system under different temperatures and different time.
In this system, (vi) charge and discharge control by controlling detection module to realize, specific calculate is realized by (vii) host computer, as shown in Fig. 2 charge and discharge control program specifically includes following steps in control detection module：
201）Accumulation timing, minute book circulation current time t；
202）Receive and obtain the data such as battery module current/voltage/SOC in battery management module；
203）Judge t<, then into next step, otherwise into step 208）；
204）Battery module voltages V>Minimum limitation voltage Vmin, then into next step, otherwise into step 208）；
205）Battery module voltages V<Maximum limit voltage Vmax, then into next step, otherwise into step 208）；
206) battery module electric current is calculated;
207) 
For just, then control charging module to close, discharge module withConstant-current discharge, otherwise control discharge module close, charging module with
Constant-current discharge, return to step 201）；
208）This discharge and recharge terminates.
Finally, presently preferred embodiments of the present invention is the foregoing is only, all equivalent changes and modifications done according to scope of the invention as claimed should all belong to the covering scope of the claims in the present invention.
Claims (6)
1. battery pack alternative in a kind of l-G simulation test, it is characterised in that comprise the following steps：
The same batch cell of the tested battery pack of n composition is concatenated into battery module；
By the multiplication factor of voltage sampling circuit in the battery management system of tested battery pack adjust to
Times, and by the power electric wire of battery module, equidirectional winding a is enclosed on current sensor in the battery management system, and the corresponding battery management module of the battery module is used as after transformation；
The tested battery pack includes a parallel module, each parallel module and formed by b cell concatenation, or the tested battery pack is formed in parallel including b serial module structure, each serial module structure by a cell, and a, b, n are natural number.
2. alternative according to claim 1, it is characterised in that the battery module electric discharge or charging current are
, voltage is
,
It is to be tested the corresponding equivalent electric discharge of battery pack or charging current,It is the corresponding equivalent voltage of tested battery pack.
3. alternative according to claim 1 or claim 2, it is characterised in that according to the charging and recharging model of tested battery pack
Obtain the charging and recharging model of the battery module
, wherein：T is the working time, and SOC is the dump energy of tested battery pack or the battery module.
4. alternative according to claim 1, it is characterised in that the transformation, which also includes masking cell in the battery management system, substitutes part.
5. battery pack replacing device in a kind of l-G simulation test, it is characterised in that also include：
Battery module, the same batch cell that tested battery pack is constituted by n is concatenated into；
Battery management module, the control connection battery module is formed by the battery management system transformation for being tested battery pack：The multiplication factor of its voltage sampling circuit is original times, and equidirectional winding a is enclosed the power electric wire of the battery module on current sensor in the battery management system；
The tested battery pack includes a parallel module, each parallel module and formed by b cell concatenation, or the tested battery pack is formed in parallel including b serial module structure, each serial module structure by a cell, and a, b, n are natural number.
6. replacement device according to claim 5, it is characterised in that n is 2-9.
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| CN 201110031316 CN102169166B (en) | 2011-01-28 | 2011-01-28 | Battery pack replacing device and method in simulation test |
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|---|---|---|---|
| CN 201110031316 CN102169166B (en) | 2011-01-28 | 2011-01-28 | Battery pack replacing device and method in simulation test |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101029920A (en) * | 2006-09-07 | 2007-09-05 | 长安大学 | System for inspecting operation parameter of central/distributed electric vehicle battery set |
| CN101430366A (en) * | 2008-12-12 | 2009-05-13 | 苏州金百合电子科技有限公司 | Battery charge state detection method |
| JP2009264779A (en) * | 2008-04-22 | 2009-11-12 | Panasonic Corp | Battery state detection circuit, battery pack, and charging system |
| CN101741123A (en) * | 2010-02-01 | 2010-06-16 | 鸿源控股有限公司 | Efficient power intelligent management system for vehicle |
| CN101762800A (en) * | 2010-01-28 | 2010-06-30 | 北京航空航天大学 | Battery managing system testing platform |
-
2011
- 2011-01-28 CN CN 201110031316 patent/CN102169166B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101029920A (en) * | 2006-09-07 | 2007-09-05 | 长安大学 | System for inspecting operation parameter of central/distributed electric vehicle battery set |
| JP2009264779A (en) * | 2008-04-22 | 2009-11-12 | Panasonic Corp | Battery state detection circuit, battery pack, and charging system |
| CN101430366A (en) * | 2008-12-12 | 2009-05-13 | 苏州金百合电子科技有限公司 | Battery charge state detection method |
| CN101762800A (en) * | 2010-01-28 | 2010-06-30 | 北京航空航天大学 | Battery managing system testing platform |
| CN101741123A (en) * | 2010-02-01 | 2010-06-16 | 鸿源控股有限公司 | Efficient power intelligent management system for vehicle |
Non-Patent Citations (1)
| Title |
|---|
| 张锐: "纯电动公交电池管理系统的设计与实现", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
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