CN102508089A - Device for testing battery protection board based on peripheral component interconnect (PCI) bus structure - Google Patents

Abstract

The invention discloses a device for testing a battery protection board based on a peripheral component interconnect (PCI) bus structure. The device comprises a power supply board card, an electronic load board card, a digital multimeter board card, an oscilloscope and digital input/output (I/O) board card, an interface circuit and an industrial personal computer; the power supply board card and the electronic load board card are electrically connected with each other through the interface circuit and the battery protection board of an object to be tested; the power supply board card is electrically connected with the electronic load board card through an RS485 interface circuit and the industrial personal computer; the digital multimeter board card is electrically connected with the oscilloscope and digital I/O board card through the interface circuit and the object to be tested; and the digital multimeter board card is electrically connected with the oscilloscope and digital I/O board card through a PCI bus interface and the industrial personal computer. The device has the advantages that: the battery protection board is detected by a test platform, so products of which functions cannot reach the standard and the performance is not reliable can be rejected, and the overall quality of batteries can be guaranteed. A user can select a test process, and test accuracy and time, and the device is easy to operate and saves cost.

Description

A kind of battery protection board test device based on the pci bus structure

Technical field

The present invention relates to a kind of battery protection board test device, particularly relate to a kind of battery protection board test device, belong to the proving installation technical field based on the pci bus structure.

Background technology

The quality of lithium ion battery quality not merely depends on the performance of every battery, prior be battery protecting plate reliably whether.The security of lithium battery, stability, serviceable life very big degree the influence that receives battery protecting plate; In case fender breaks down; Gently then reduce the electric battery life-span, heavy then cause the major accident of serious even life-threatening property safety such as short circuit, electric leakage, detonation.Therefore, in the production run, the fender of lithium battery is carried out reliability detect and have necessity.

The detection line signal source whether stablize the accuracy that direct relation testing result.What use at present is that the flying-spot video generator of core exists poor stability with the Analogous Integrated Electronic Circuits, and noise is big, needs defectives such as preheating instrument before using.Substitute the inexorable trend that conventional analog circuits is the signal generator development with high-speed digital integrated circuit.

Granted publication number is the practical new patent of CN202033439U; Title is portable laboratory; This patent specifically discloses the PXI integrated circuit board of instrument moduleization; Comprise, oscillograph integrated circuit board, multimeter integrated circuit board numeral I/O integrated circuit board and power supply integrated circuit board, and introduced the composition and the principle of work of above-mentioned modular PXI integrated circuit board in detail.

Summary of the invention

Technical matters to be solved by this invention is, overcomes defective of the prior art, and a kind of battery protection board test device based on the pci bus structure is provided.

The technical scheme that the present invention adopted is; A kind of battery protection board test device based on the pci bus structure; Comprise; Linear power supply integrated circuit board, electronic load integrated circuit board, digital multimeter integrated circuit board, oscillograph and digital I/O integrated circuit board, interface circuit and industrial computer; Described linear power supply integrated circuit board and electronic load integrated circuit board are electrically connected with the determinand battery protecting plate through described interface circuit each other, and described linear power supply integrated circuit board and electronic load integrated circuit board are electrically connected with described industrial computer through the RS485 interface circuit each other; Described digital multimeter integrated circuit board and oscillograph and digital I/O integrated circuit board are electrically connected with the determinand battery protecting plate through described interface circuit each other, and described digital multimeter integrated circuit board and oscillograph and digital I/O integrated circuit board are electrically connected with described industrial computer through pci bus interface each other.

Described linear power supply integrated circuit board, electronic load integrated circuit board, digital multimeter integrated circuit board, oscillograph and digital I/O integrated circuit board are the PCI integrated circuit boards, are provided with in the PCI slot that is installed in the industrial computer.

Described interface circuit is the interface circuit of proving installation and battery protecting plate; Comprise; Control circuit, driving circuit, commutation circuit, integrated circuit board interface circuit and battery protecting plate interface circuit, described control circuit is controlled said commutation circuit through said driving circuit, realizes the conversion of the integrated circuit board interface circuit of testing requirement through described battery protecting plate interface circuit and battery protecting plate tie point; When the fender proving installation was in holding state, the terminals of the integrated circuit board of testing tool were put sky.

The model of described digital multimeter integrated circuit board is PCI-4065, and the model of described oscillograph and digital I/O integrated circuit board is PCI-6250.

The invention has the beneficial effects as follows that through the detection of test platform to battery protecting plate, but removing function is not up to standard, the insecure product of performance, to guarantee the total quality of lithium battery.Testing process, measuring accuracy and test duration, can independently select according to the actual requirements, the handled easily person rationalizes adjustment, to reduce the used time of test, practices thrift cost.

Description of drawings

Fig. 1 is the battery protection board test device synoptic diagram that the present invention is based on the pci bus structure;

Fig. 2 is that the oscillograph integrated circuit board that the present invention uses is formed synoptic diagram;

Fig. 3 is that the digital multimeter integrated circuit board that the present invention uses is formed synoptic diagram;

Fig. 4 is that the digital I/O integrated circuit board that the present invention uses is formed synoptic diagram;

Fig. 5 is that the pci interface circuit that the present invention uses is formed synoptic diagram;

Fig. 6 is the PID controller principle block diagram of the electronic load integrated circuit board that uses of the present invention;

Fig. 7 is proving installation of the present invention and li-ion cell protection plate interface circuit diagram;

Fig. 8 a is proving installation of the present invention and li-ion cell protection plate interface circuit theory diagrams A;

Fig. 8 b is proving installation of the present invention and li-ion cell protection plate interface circuit theory diagrams B.

Embodiment

Below in conjunction with accompanying drawing and embodiment the present invention is done further explain:

Fig. 1 is the battery protection board test device synoptic diagram that the present invention is based on the pci bus structure; As shown in Figure 1; A kind of battery protection board test device of the present invention based on the pci bus structure; It is characterized in that; Comprise; Linear power supply integrated circuit board, electronic load integrated circuit board, digital multimeter integrated circuit board, oscillograph and digital I/O integrated circuit board, interface circuit and industrial computer, described linear power supply integrated circuit board and electronic load integrated circuit board are electrically connected with the determinand battery protecting plate through described interface circuit each other, and described linear power supply integrated circuit board and electronic load integrated circuit board are electrically connected with described industrial computer through the RS485 interface circuit each other; Described digital multimeter integrated circuit board and oscillograph and digital I/O integrated circuit board are electrically connected with the determinand battery protecting plate through described interface circuit each other, and described digital multimeter integrated circuit board and oscillograph and digital I/O integrated circuit board are electrically connected with described industrial computer through pci bus interface each other.

Fig. 2 is that the oscillograph integrated circuit board that the present invention uses is formed synoptic diagram; Fig. 3 is that the digital multimeter integrated circuit board that the present invention uses is formed synoptic diagram; Fig. 4 is that the digital I/O integrated circuit board that the present invention uses is formed synoptic diagram; Fig. 5 is that the pci interface circuit that the present invention uses is formed synoptic diagram; To shown in Figure 5, described linear power supply integrated circuit board, electronic load integrated circuit board, digital multimeter integrated circuit board, oscillograph and digital I/O integrated circuit board are the PCI integrated circuit boards like Fig. 2, are provided with in the PCI slot that is installed in the industrial computer.

Fig. 6 is the PID controller principle block diagram of the electronic load integrated circuit board that uses of the present invention; As shown in Figure 6, the reference input at the software operation interface through 12 bit A/D converters sampling on the PCI integrated circuit board, returns the actual output quantity collection of controlling object in the integrated circuit board, transfers to industrial computer.After handling through the digital operation of industrial computer, the D/A conversion chip through integrated circuit board carries out D/A switch, obtains actual simulation controlled quentity controlled variable and goes to control controlled device, makes it the operation work that is provided with according to system.What this electronic load was used is a digital electronic load PID controller, supposes that at present it is a system of load current being advanced PID control.

R among Fig. 6 (t) is a current setting value, and y (t) is the actual measured value of electronic load, and e (t) is the deviation signal of input controller, and u (t) is the controlled quentity controlled variable of controller output, and then PID control formula is suc as formula shown in (1):

$U\left(t\right)=K_p[e\left(t\right)+\frac{1}{T_I}{\∫}_0^{t}e\left(t\right)\mathrm{dt}+T_D\frac{\mathrm{de}\left(t\right)}{\mathrm{dt}}]+u_0---\left(1\right)$

Wherein: Kp is a scale-up factor, T _IBe integration time constant, T _DIt is derivative time constant.Following formula is the PID control formula of analog form; Adopt industrial computer to realize digital PID control now, industrial computer control is a kind of controlling of sampling, and it can only make according to sampling can get the deviation calculation controlled quentity controlled variable; And can not as simulation control, export controlled quentity controlled variable continuously; Carry out stepless control, integration in the following formula and differential term can not directly use, and must carry out discretize and handle.The method of discretize processing is: as the sampling period, K is as sampling sequence number with T, and then discrete sampling time T corresponding continuous time of t with the form replacement integration of summation, with the form replacement differential of increment, can do suc as formula changing shown in (2).

$\left.\begin{array}{c}t\≈\mathrm{kT}\\ {\∫}_0^{t}e\left(t\right)\mathrm{dt}\≈T\underset{j=0}{\overset{k}{\mathrm{\Σ}}}e\left(\mathrm{jT}\right)=T\underset{j=0}{\overset{k}{\mathrm{\Σ}}}{e}_j\\ \frac{\mathrm{de}\left(t\right)}{\mathrm{dt}}\≈\frac{e\left(\mathrm{kT}\right)-e\left[(k-1)T\right]}{T}=\frac{e_k-e_{k-1}}{T}\end{array}\right\}---\left(2\right)$

Wherein k=(0,1,2,3 ...), for representing conveniently e (kT) to be reduced to e _k, e [(k-1) T] is reduced to e _K-1With the PID expression formula that just can disperse in following formula substitution (1) formula:

$u_k=K_p[e_k+\frac{T}{T_I}\underset{j=0}{\overset{k}{\mathrm{\Σ}}}{e}_j+\frac{T_D}{T}(e_k-e_{k-1})]+u_0---\left(3\right)$

If it is enough little that the sampling period gets, then above approximate treatment can obtain enough precise results, and discrete control procedure and stepless control process are very approaching.For increasing the reliability of control system, adopt increment type PID control formula, promptly let computing machine only export the increment Delta u (k) of controlled quentity controlled variable.Formula (3) is the output quantity of the k time PID controller, and the output of the k-1 time PID controller is suc as formula shown in (4) so:

$u_{k-1}=K_P[e_{k-1}+\frac{T}{T_I}\underset{j=0}{\overset{k-1}{\mathrm{\Σ}}}{e}_j+\frac{T_D}{T}(e_{k-1}-e_{k-2})]+u_0---\left(4\right)$

(3) formula is subtracted each other to such an extent that equation (5) is exactly the increment type PID control formula of using in this control program with (4) formula:

$\mathrm{\Δ}{u}_k=u_k-u_{k-1}=K_p[1+\frac{T}{T_I}+\frac{T_D}{T}]e_k-$

$K_p(1+\frac{2T_D}{T})e_{k-1}+K_p\frac{T_D}{T}{e}_{k-2}={\mathrm{Ae}}_k+{\mathrm{Be}}_{k-1}+{\mathrm{Ce}}_{k-2}---\left(5\right)$

Wherein:

$A=K_p[1+\frac{T}{T_I}+\frac{T_D}{T}],$ $B=-K_p(1+\frac{2T_D}{T}),$ $C=K_p\frac{T_D}{T}$

Can find out by formula (5), if the industrial computer control system adopts constant sampling period T, in case confirmed A, B, C is as long as the deviation that three times are measured before and after having just can be obtained controlled quentity controlled variable.It only is to change to some extent on the algorithm that increment type PID control is compared with position model PID control, and it just changes output increment, and to the influence of control system, and it is out of control can not to produce integration when having reduced the computing machine maloperation.

Fig. 7 is proving installation of the present invention and li-ion cell protection plate interface circuit diagram; Fig. 8 a is proving installation of the present invention and li-ion cell protection plate interface circuit theory diagrams A; Fig. 8 a is proving installation of the present invention and li-ion cell protection plate interface circuit theory diagrams B; Shown in Fig. 7, Fig. 8 a and Fig. 8 b; Described interface circuit is the interface circuit of proving installation and battery protecting plate; Comprise; Control circuit, driving circuit, commutation circuit, integrated circuit board interface circuit and battery protecting plate interface circuit, described control circuit is controlled said commutation circuit through said driving circuit, realizes the conversion of the integrated circuit board interface circuit of testing requirement through described battery protecting plate interface circuit and battery protecting plate tie point.

The model of described digital multimeter integrated circuit board is PCI-4065, and the model of described oscillograph and digital I/O integrated circuit board is PCI-6250.

Principle of work of the present invention is a host computer with the industrial computer, and the PCI integrated circuit board is installed in the interior PCI slot of industrial computer; Controlled by industrial computer, linear power supply integrated circuit board, electronic load integrated circuit board connect the calibrating terminal of mesuring battary fender, and digital multimeter integrated circuit board, oscillograph integrated circuit board are with the data that collect; Transfer in the industrial computer through communication modes such as RS485, pci buss; Draw test result by industrial computer through analysis software, carry out unified Analysis, and generate test report.

Battery protecting plate has P+, P-, B+, B-, ID, six calibrating terminals of TH; Need carry out over-charge protective when carrying out Performance Detection, cross the test of putting tens of protection, overcurrent protection, short-circuit protection, consumable electric current, internal resistances etc.Each item is tested required instrument integrated circuit board (linear power supply integrated circuit board, oscillograph and digital I/O integrated circuit board, electronic load integrated circuit board, digital multimeter integrated circuit board etc.) and is had nothing in common with each other.The interface circuit of proving installation and battery protecting plate is accepted I/O integrated circuit board instruction, six calibrating terminals of battery protecting plate is switched with being connected of testing tool integrated circuit board, to reach different test purposes.Simultaneously, I/O integrated circuit board output power is lower, is not enough to drive relay work, therefore, in the interface circuit of proving installation and battery protecting plate, comprises relay drive circuit.

When the fender proving installation was in holding state, the terminals of the integrated circuit board of various testing tools (linear power supply integrated circuit board, oscillograph and digital I/O integrated circuit board, electronic load integrated circuit board, digital multimeter integrated circuit board etc.) need be put sky, damaged to prevent testing apparatus.The interface circuit of this proving installation and battery protecting plate can be realized the break-make of dashboard clamping line end through the control of host computer.

The present invention is through the detection of test platform to battery protecting plate; But removing function is not up to standard, the insecure product of performance, to guarantee the total quality of lithium battery, testing process, measuring accuracy and test duration; Can independently select according to the actual requirements; The handled easily person rationalizes adjustment, to reduce the used time of test, practices thrift cost.

It is worthy of note; Protection scope of the present invention is not limited to above-mentioned instantiation mode; According to basic fundamental design of the present invention, also available essentially identical structure can realize the purpose that this is novel, as long as those of ordinary skills need not through creative work; The embodiment that can associate all belongs to protection scope of the present invention.

Claims (4)

1. battery protection board test device based on the pci bus structure; Comprise; Linear power supply integrated circuit board, electronic load integrated circuit board, digital multimeter integrated circuit board, oscillograph and digital I/O integrated circuit board; It is characterized in that, also comprise, interface circuit and industrial computer; Described linear power supply integrated circuit board and electronic load integrated circuit board are electrically connected with the determinand battery protecting plate through described interface circuit each other, and described linear power supply integrated circuit board and electronic load integrated circuit board are electrically connected with described industrial computer through the RS485 interface circuit each other; Described digital multimeter integrated circuit board and oscillograph and digital I/O integrated circuit board are electrically connected with the determinand battery protecting plate through described interface circuit each other, and described digital multimeter integrated circuit board and oscillograph and digital I/O integrated circuit board are electrically connected with described industrial computer through pci bus interface each other.

2. the battery protection board test device of a kind of pci bus structure according to claim 1; It is characterized in that; Described linear power supply integrated circuit board, electronic load integrated circuit board, digital multimeter integrated circuit board, oscillograph and digital I/O integrated circuit board are the PCI integrated circuit boards, are provided with in the PCI slot that is installed in the industrial computer.

3. the battery protection board test device of a kind of pci bus structure according to claim 2; It is characterized in that; Described interface circuit is the interface circuit of proving installation and battery protecting plate, comprises control circuit, driving circuit, commutation circuit, integrated circuit board interface circuit and battery protecting plate interface circuit; Described control circuit is controlled said commutation circuit through said driving circuit; Realize the conversion of the integrated circuit board interface circuit of testing requirement through described battery protecting plate interface circuit and battery protecting plate tie point, when the fender proving installation was in holding state, the terminals of the integrated circuit board of testing tool were put sky.

4. according to the battery protection board test device of claim 1 or 2 or 3 described a kind of pci bus structures, it is characterized in that the model of described digital multimeter integrated circuit board is PCI-4065, the model of described oscillograph and digital I/O integrated circuit board is PCI-6250.

Images