CN106915353A - The computational methods of heat management available horsepower, thermal management controller, heat management system - Google Patents

Abstract

The invention provides a kind of computational methods, thermal management controller, the heat management system of heat management available horsepower, the heat management system includes the thermal management controller, the heat management available horsepower that the thermal management controller is come under calculating limit operating mode using the computational methods, the computational methods are while heat management available horsepower is calculated, the calculating for driving available horsepower is considered, and, heat management available horsepower uses first-order low-pass ripple algorithm, and the size of filtering parameter depends on driving the size of demand power rate of change；Available horsepower limit coefficient is driven to use PI algorithms, P parameters and I parameters change with the change for driving available horsepower and driving actual power difference.Using the computational methods that the present invention is provided, under limiting condition, can farthest ensure driving, and avoid electrokinetic cell from crossing to put on the basis of vehicle demand for security is met.

Description

The computational methods of heat management available horsepower, thermal management controller, heat management system

Technical field

The present invention relates to Development of HEV Technology field, more particularly to a kind of calculating side of heat management available horsepower Method, thermal management controller, heat management system.

Background technology

The problems such as energy crisis, environmental pollution and greenhouse effects it is increasingly serious, new-energy automobile is turned into automobile industry The inexorable trend of change.Hybrid power electrical automobile has efficient, energy-conservation, the advantage that continual mileage is long, dynamic property is strong, by scientific research The extensive concern of mechanism and enterprise, and the distribution for how carrying out heat management available horsepower be lifting hybrid vehicle economy and One of the key factor of driving, the emphasis as mixing electrical automobile area research.

When hybrid vehicle is in the larger operating mode of operator demand's power, it is necessary to farthest utilize power electric Pond energy to meet vehicle dynamic property and security requirement as far as possible, while needing to avoid battery to cross to put and cause its performance and longevity again Life decay, therefore, how to optimize heat management available horsepower computational methods of the hybrid vehicle under limiting condition, become this Art personnel technical problem urgently to be resolved hurrily.

The content of the invention

In view of this, the invention provides a kind of computational methods, thermal management controller, the heat management of heat management available horsepower System, the heat management system includes the thermal management controller, and the thermal management controller is counted using the computational methods The heat management available horsepower under limiting condition is calculated, on the premise of preventing from electrokinetic cell from crossing putting, can be made by the computational methods Vehicle ensures driving as much as possible on the basis of meeting demand for security.

In order to achieve the above object, the present invention provides following technical scheme：

A kind of computational methods of heat management available horsepower, for the heat management available horsepower under calculating limit operating mode, including：

Step A, the heat management available horsepower is calculated by following formula：

In formula, P_TMSAvl- heat management available horsepower；

P_TMSReq- thermal management requirements power；

P_TMSMin- heat management defrosting-defogging demand power；

K-filter factor；

Wherein, filter factor k is calculated by following formula：

In formula, P_DrvReq- drive demand power；

T-time；

A, b-calibrating parameters；

Step B, is calculated by following formula and drives available horsepower：

P_DrvAvl=δ × (P_Avl-P_Elecnse-P_TMSAct)

In formula, P_DrvAvl- drive available horsepower；

P_Avl- vehicle available horsepower；

P_Elecnse- electric accessories consume power；

P_TMSAct- heat management actual power consumption；

δ-driving available horsepower limit coefficient；

Wherein, available horsepower limit coefficient δ is driven to be calculated by PI algorithms, calculating formula is：

Proportionality coefficient P is calculated by following formula：

P=m × (P_DrvAvl-P_DrvAct)

Integral coefficient I is calculated by following formula：

In formula, P_DrvAct- drive actual power；

M, n-calibrating parameters.

Preferably, in above-mentioned computational methods, calculate the heat management available horsepower and the driving available horsepower it Before, judging whether vehicle meets enable condition, the enable condition is：

The vehicle available horsepower is not more than vehicle demand power；And

Engine is in running status；And

Vehicle heat management has defrosting-defogging power demand.

Preferably, in above-mentioned computational methods, the vehicle available horsepower P is calculated by following formula_Avl：

P_Avl=P_Engine+P_Batt

In formula, P_Engine- engine output；

P_Batt- battery discharge power；

The vehicle demand power is calculated by following formula：

P_Req=P_DrvReq+P_TMSReq+P_Elecnse

In formula, P_Req- vehicle demand power.

A kind of thermal management controller, including for the limitation power calculation of the heat management available horsepower under calculating limit operating mode Module, the limitation power computation module is included by calculating the first computing unit of the heat management available horsepower and based on Calculate the second computing unit for driving available horsepower；

First computing unit calculates the heat management available horsepower using following formula：

In formula, P_TMSAvl- heat management available horsepower；

P_TMSReq- thermal management requirements power；

P_TMSMin- heat management defrosting-defogging demand power；

K-filter factor；

Wherein, filter factor k is calculated by following formula：

In formula, P_DrvReq- drive demand power；

T-time；

A, b-calibrating parameters；

Second computing unit is calculated using following formula and drives available horsepower：

P_DrvAvl=δ × (P_Avl-P_Elecnse-P_TMSAct)

In formula, P_DrvAvl- drive available horsepower；

P_Avl- vehicle available horsepower；

P_Elecnse- electric accessories consume power；

P_TMSAct- heat management actual power consumption；

δ-driving available horsepower limit coefficient；

Wherein, available horsepower limit coefficient δ is driven to be calculated by PI algorithms, calculating formula is：

Proportionality coefficient P is calculated by following formula：

P=m × (P_DrvAvl-P_DrvAct)

Integral coefficient I is calculated by following formula：

In formula, P_DrvAct- drive actual power；

M, n-calibrating parameters.

Preferably, it is described also including the enable judge module for judging enable condition in above-mentioned thermal management controller Enable condition is：

The vehicle available horsepower is not more than vehicle demand power；And

Engine is in running status；And

Vehicle heat management has defrosting-defogging power demand.

Preferably, in above-mentioned thermal management controller, including needed for calculating the vehicle available horsepower and the vehicle Asking the pretreatment module of power, the pretreatment module includes receiving unit and pre-calculation unit；

The receiving unit is used for reception and drives demand power, thermal management requirements power, electric accessories to consume power, start Machine power output and battery discharge power；

The pre-calculation unit calculates the vehicle available horsepower P using following formula_Avl：

P_Avl=P_Engine+P_Batt

In formula, P_Engine- engine output；

P_Batt- battery discharge power；

The pre-calculation unit calculates the vehicle demand power using following formula：

P_Req=P_DrvReq+P_TMSReq+P_Elecnse

In formula, P_Req- vehicle demand power.

A kind of heat management system, including thermal management controller disclosed in any of the above-described.

The heat management available horsepower that the computational methods that the present invention is provided are used under calculating limit operating mode, by above-mentioned technical proposal Understand, the computational methods have considered the calculating for driving available horsepower while heat management available horsepower is calculated, and, Heat management available horsepower uses first-order low-pass ripple algorithm, and the size of filtering parameter depends on driving the big of demand power rate of change It is small；Available horsepower limit coefficient is driven to use PI algorithms, P parameters and I parameters are with driving available horsepower and driving actual power The change of difference and change.Using the computational methods that the present invention is provided, under limiting condition, vehicle demand for security can met On the basis of, farthest ensure driving, and avoid electrokinetic cell from crossing to put.

Brief description of the drawings

In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis The accompanying drawing of offer obtains other accompanying drawings.

Fig. 1 is the heat management available horsepower calculation flow chart under limiting condition provided in an embodiment of the present invention；

Fig. 2 is driving available horsepower and the change signal of heat management available horsepower under limiting condition provided in an embodiment of the present invention Figure.

Specific embodiment

In order to make it easy to understand, the invention will be further described below in conjunction with the accompanying drawings.

It is the heat management available horsepower calculation flow chart under limiting condition provided in an embodiment of the present invention referring to Fig. 1, works as heat When Management Controller is waken up, calculated according to below scheme：

S1, receives the function coherent signal.

Function coherent signal is used to judge whether vehicle meets function trigger condition (enable condition), the function coherent signal Including battery discharge power, engine speed, engine torque, engine behavior, speed, thermal management requirements power, oil The signals such as door pedaling torque.

S2, conditional parameter is calculated.

(1) engine output is calculated according to engine speed and engine torque, and according to battery discharge power and Engine output calculates vehicle available horsepower.

(2) according to speed, gas pedal moment of torsion and radius of wheel are calculated and drive demand power, and according to driving demand work( Rate, thermal management requirements power and electric accessories consumption power meter calculate vehicle demand power.

In the particular embodiment, thermal management controller can be included for calculating vehicle available horsepower and vehicle demand work( The pretreatment module of rate, pretreatment module includes receiving unit and pre-calculation unit；

Receiving unit is used to receive engine output, battery discharge power, drives demand power, thermal management requirements work( Rate and electric accessories consumption power；

Pre-calculation unit calculates vehicle available horsepower using following formula：

P_Avl=P_Engine+P_Batt

In formula, P_Avl- vehicle available horsepower；

P_Engine- engine output；

P_Batt- battery discharge power.

Pre-calculation unit calculates vehicle demand power using following formula：

P_Req=P_DrvReq+P_TMSReq+P_Elecnse

In formula, P_Req- vehicle demand power；

P_DrvReq- drive demand power；

P_TMSReq- thermal management requirements power；

P_Elecnse- electric accessories consume power.

S3, function trigger condition (enable condition) judges.

In specific embodiment, thermal management controller includes the enable judge module for judging enable condition, enables condition For：

Vehicle available horsepower is not more than vehicle demand power；And

Engine is in running status；And

Vehicle heat management has defrosting-defogging power demand.

It should be noted that " vehicle heat management has defrosting-defogging power demand " refers to, defrosting-defogging function is in opens State.

S4, energy distribution is calculated.

Energy distribution calculating includes：(1) heat management available horsepower is calculated；(2) calculate and drive available horsepower.

In specific embodiment, thermal management controller includes the limitation for the heat management available horsepower under calculating limit operating mode Power computation module, limitation power computation module is included by calculating the first computing unit of heat management available horsepower and based on Calculate the second computing unit for driving available horsepower.

First computing unit calculates the heat management available horsepower using following formula：

In formula, P_TMSAvl- heat management available horsepower；

P_TMSReq- thermal management requirements power；

P_TMSMin- heat management defrosting-defogging demand power；

K-filter factor.

Second computing unit is calculated using following formula and drives available horsepower：

P_DrvAvl=δ × (P_Avl-P_Elecnse-P_TMSAct)

In formula, P_DrvAvl- drive available horsepower；

P_Avl- vehicle available horsepower；

P_Elecnse- electric accessories consume power；

P_TMSAct- heat management actual power consumption；

δ-driving available horsepower limit coefficient.

, it is necessary to use regulation limit coefficient in energy distribution is calculated, including filter factor k and driving available horsepower limitation Coefficient δ, therefore, include between S1 and S4：S5, regulation limit coefficient is calculated.

In specific embodiment, filter factor k is calculated by following formula：

In formula, P_DrvReq- drive demand power；

T-time；

A, b-calibrating parameters；

Available horsepower limit coefficient δ is driven to be calculated by PI algorithms, calculating formula is：

Proportionality coefficient P is calculated by following formula：

P=m × (P_DrvAvl-P_DrvAct)

Integral coefficient I is calculated by following formula：

In formula, P_DrvAct- drive actual power；

M, n-calibrating parameters.

It should be noted that " calibrating parameters " are the ginsengs that the data by surveying are demarcated and drawn for functional relation Numerical value.

S6, function exit criteria judges.

When vehicle available horsepower is more than vehicle demand power, thermal management controller exits the function.

Available horsepower and heat management available horsepower is driven to become using computational methods disclosed in above-described embodiment, under limiting condition Change schematic diagram as shown in Fig. 2 under limiting condition, on the basis of vehicle demand for security is met, farthest ensure that driving Property, and avoid electrokinetic cell from crossing putting.

Present invention also offers a kind of heat management system, the heat management system includes heat management control disclosed in above-described embodiment Device processed, because thermal management controller disclosed in above-described embodiment has above-mentioned technique effect, therefore with the thermal management controller Heat management system equally have above-mentioned technique effect, repeat no more herein.

The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or uses the present invention. Various modifications to embodiment will be apparent for those skilled in the art, as defined herein general Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention will not Can be restricted to embodiment illustrated herein, and be to fit to consistent with principles disclosed herein and features of novelty most wide Scope.

Claims (7)

1. a kind of computational methods of heat management available horsepower, for the heat management available horsepower under calculating limit operating mode, its feature It is, including：

Step A, the heat management available horsepower is calculated by following formula：

$P_{TMSAvl}=P_{TMS\mathrm{Re}q}-\left(\frac{P_{TMS\mathrm{Re}q}-P_{TMSMin}}{k}\right)$

In formula, P_TMSAvl- heat management available horsepower；

P_TMSReq- thermal management requirements power；

P_TMSMin- heat management defrosting-defogging demand power；

K-filter factor；

Wherein, filter factor k is calculated by following formula：

$k=a\×\left(\frac{{\mathrm{\ΔP}}_{Drv\mathrm{Re}q}}{\mathrm{\Δ}t}\right)+b$

In formula, P_DrvReq- drive demand power；

T-time；

A, b-calibrating parameters；

Step B, is calculated by following formula and drives available horsepower：

P_DrvAvl=δ × (P_Avl-P_Elecnse-P_TMSAct)

In formula, P_DrvAvl- drive available horsepower；

P_Avl- vehicle available horsepower；

P_Elecnse- electric accessories consume power；

P_TMSAct- heat management actual power consumption；

δ-driving available horsepower limit coefficient；

Wherein, available horsepower limit coefficient δ is driven to be calculated by PI algorithms, calculating formula is：

$\mathrm{\δ}=1+\[P\×(P_{DrvAvl}-P_{DrvAct})+I\×{\∫}_{t_1}^{t_2}(P_{DrvAvl}-P_{DrvAct})d\mathrm{\τ}\]$

Proportionality coefficient P is calculated by following formula：

P=m × (P_DrvAvl-P_DrvAct)

Integral coefficient I is calculated by following formula：

$I=n\×\frac{\mathrm{\Δ}(P_{DrvAvl}-P_{DrvAct})}{\mathrm{\Δ}t}$

In formula, P_DrvAct- drive actual power；

M, n-calibrating parameters.

2. computational methods according to claim 1, it is characterised in that calculating the heat management available horsepower and the drive Before dynamic available horsepower, judge whether vehicle meets enable condition, the enable condition is：

The vehicle available horsepower is not more than vehicle demand power；And

Engine is in running status；And

Vehicle heat management has defrosting-defogging power demand.

3. computational methods according to claim 2, it is characterised in that the vehicle available horsepower P is calculated by following formula_Avl：

P_Avl=P_Engine+P_Batt

In formula, P_Engine- engine output；

P_Batt- battery discharge power；

The vehicle demand power is calculated by following formula：

P_Req=P_DrvReq+P_TMSReq+P_Elecnse

In formula, P_Req- vehicle demand power.

4. a kind of thermal management controller, it is characterised in that including the limit for the heat management available horsepower under calculating limit operating mode Power computation module processed, the limitation power computation module includes the first calculating list for calculating the heat management available horsepower Unit and the second computing unit for calculating driving available horsepower；

First computing unit calculates the heat management available horsepower using following formula：

$P_{TMSAvl}=P_{TMS\mathrm{Re}q}-\left(\frac{P_{TMS\mathrm{Re}q}-P_{TMSMin}}{k}\right)$

In formula, P_TMSAvl- heat management available horsepower；

P_TMSReq- thermal management requirements power；

P_TMSMin- heat management defrosting-defogging demand power；

K-filter factor；

Wherein, filter factor k is calculated by following formula：

$k=a\×\left(\frac{{\mathrm{\ΔP}}_{Drv\mathrm{Re}q}}{\mathrm{\Δ}t}\right)+b$

In formula, P_DrvReq- drive demand power；

T-time；

A, b-calibrating parameters；

Second computing unit is calculated using following formula and drives available horsepower：

P_DrvAvl=δ × (P_Avl-P_Elecnse-P_TMSAct)

In formula, P_DrvAvl- drive available horsepower；

P_Avl- vehicle available horsepower；

P_Elecnse- electric accessories consume power；

P_TMSAct- heat management actual power consumption；

δ-driving available horsepower limit coefficient；

Wherein, available horsepower limit coefficient δ is driven to be calculated by PI algorithms, calculating formula is：

$\mathrm{\δ}=1+\[P\×(P_{DrvAvl}-P_{DrvAct})+I\×{\∫}_{t_1}^{t_2}(P_{DrvAvl}-P_{DrvAct})d\mathrm{\τ}\]$

Proportionality coefficient P is calculated by following formula：

P=m × (P_DrvAvl-P_DrvAct)

Integral coefficient I is calculated by following formula：

$I=n\×\frac{\mathrm{\Δ}(P_{DrvAvl}-P_{DrvAct})}{\mathrm{\Δ}t}$

In formula, P_DrvAct- drive actual power；

M, n-calibrating parameters.

5. thermal management controller according to claim 4, it is characterised in that also including the enable for judging enable condition Judge module, the enable condition is：

The vehicle available horsepower is not more than vehicle demand power；And

Engine is in running status；And

Vehicle heat management has defrosting-defogging power demand.

6. thermal management controller according to claim 5, it is characterised in that including for calculating the vehicle available horsepower With the pretreatment module of the vehicle demand power, the pretreatment module include receiving unit and pre-calculation unit；

The receiving unit is used for reception and drives demand power, thermal management requirements power, electric accessories consumption power, engine defeated Go out power and battery discharge power；

The pre-calculation unit calculates the vehicle available horsepower P using following formula_Avl：

P_Avl=P_Engine+P_Batt

In formula, P_Engine- engine output；

P_Batt- battery discharge power；

The pre-calculation unit calculates the vehicle demand power using following formula：

P_Req=P_DrvReq+P_TMSReq+P_Elecnse

In formula, P_Req- vehicle demand power.

7. a kind of heat management system, including thermal management controller, it is characterised in that the thermal management controller is such as claim Thermal management controller in 4~6 described in any one.