Integrated thermal management system and method for pure electric mining truck

Abstract

The invention discloses an integrated thermal management system and method for a pure electric mining truck, and relates to the technical field of vehicle thermal management, a temperature sensor is arranged at a water outlet of a heat source device in a chassis motor cooling system, and a first water path of the chassis motor cooling system and a second water path of a power battery thermal management system are connected through a switch assembly. The vehicle control unit obtains the operation state of the heat management unit; under the condition that the operation state is the working state, a temperature adjusting target of the power battery sent by the heat management unit is received; if the temperature adjustment target is temperature rise, obtaining first water temperature output by a temperature sensor, second water temperature, output by a heat management unit, of a water outlet of the heat management unit and the cell temperature of the power battery; judging whether integration conditions are met or not according to the first water temperature, the second water temperature and the battery cell temperature; and if yes, the switch assembly is controlled to be in a conducting state, so that water in the first water path enters the second water path to heat the power battery. Therefore, the heat generated by the chassis motor cooling system is used for heating the power battery.

Description

Technical Field

[0001] The present application relates to the field of vehicle thermal management technology, and in particular to an integrated thermal management system and method for a pure electric mining vehicle. Background Art

[0002] Currently, in the vehicle cooling system of pure electric mining vehicles, the power battery thermal management system and the chassis motor cooling system are independent of each other, and the two systems work independently without interfering with each other.

[0003] The power battery thermal management system not only needs to cool the power battery, but also needs to heat it up. As for the chassis motor cooling system, its function is to remove the heat generated by the motor and controller through the radiator assembly. Obviously, the heat generated by the chassis motor cooling system will be wasted and cannot be used to heat the power battery. Summary of the invention

[0004] In view of the above problems, the present application provides an integrated thermal management system and method for a pure electric mining vehicle, so as to provide the heat of the chassis motor cooling system to the power battery thermal management system to heat up the power battery. The specific scheme is as follows:

[0005] In a first aspect, the present application provides an integrated thermal management system for a pure electric mining vehicle, the integrated thermal management system for the pure electric mining vehicle comprising: a chassis motor cooling system, a power battery thermal management system and a vehicle controller, the chassis motor cooling system comprising a heat source device, a temperature sensor and a first water circuit, the power battery thermal management system comprising a thermal management unit, a power battery and a second water circuit, the temperature sensor being located at a water outlet of the heat source device, the first water circuit being used to cool the heat source device, the second water circuit being used to adjust the temperature of the power battery, and the first water circuit being connected to the second water circuit via a switch assembly;

[0006] The vehicle controller is used to obtain the operating status of the thermal management unit; when the operating status is the working status, receive the temperature control target of the power battery sent by the thermal management unit; if the temperature control target is heating, obtain the first water temperature output by the temperature sensor, the second water temperature output by the thermal management unit at its water outlet, and the battery cell temperature of the power battery; determine whether the integration condition is met based on the first water temperature, the second water temperature and the battery cell temperature; if the integration condition is met, control the switch component to be in the on state so that the water in the first water path enters the second water path to heat the power battery.

[0007] In a possible implementation, the heat source device includes: a motor and a controller, and the temperature sensor is located at a water outlet of the motor.

[0008] In a possible implementation, a first connection point and a second connection point are provided on the first waterway, the first connection point is located at the downstream end of the first waterway flowing through the motor, and the second connection point is located at the downstream end of the first waterway flowing through the first connection point;

[0009] A third connection point and a fourth connection point are provided on the second waterway, the third connection point is located at an upstream end of the second waterway flowing through the power battery, and the fourth connection point is located at a downstream end of the second waterway flowing through the power battery;

[0010] The first connection point, the second connection point, the third connection point and the fourth connection point are respectively provided with waterway tees for connecting the first waterway with the second waterway through a waterway;

[0011] The switch assembly includes a first electromagnetic on-off valve, a second electromagnetic on-off valve and a third electromagnetic on-off valve, the first electromagnetic on-off valve is located on the waterway between the first connection point and the second connection point, the second electromagnetic on-off valve is located on the waterway between the first connection point and the third connection point, and the third electromagnetic on-off valve is located on the waterway between the second connection point and the fourth connection point.

[0012] In a possible implementation, the vehicle controller for controlling the switch component to be in an on state is specifically used for:

[0013] The first electromagnetic on-off valve is controlled to be closed, and the second electromagnetic on-off valve and the third electromagnetic on-off valve are controlled to be opened, so that the water in the first water path flows through the second electromagnetic on-off valve, the power battery and the third electromagnetic on-off valve and then flows back to the first water path.

[0014] In a possible implementation, the vehicle controller is further used for:

[0015] When the operating state is a non-operating state, the switch component is controlled to be in an off state.

[0016] In a possible implementation, the vehicle controller is further used for:

[0017] If the temperature adjustment target is cooling, or the integration condition is not met, the switch component is controlled to be in an off state.

[0018] In a possible implementation, the vehicle controller for judging whether the integration condition is met according to the first water temperature, the second water temperature and the battery core temperature is specifically used for:

[0019] Determine whether the second water temperature is greater than the battery cell temperature; if the second water temperature is greater than the battery cell temperature, determine whether the first water temperature is greater than the battery cell temperature; if the first water temperature is greater than the battery cell temperature, determine that the integration condition is met; if the first water temperature is not greater than the battery cell temperature, determine that the integration condition is not met; if the second water temperature is not greater than the battery cell temperature, determine whether the first water temperature is greater than the second water temperature; if the first water temperature is greater than the second water temperature, determine that the integration condition is met; if the first water temperature is not greater than the second water temperature, determine that the integration condition is met.

[0020] The second aspect of the present application provides an integrated thermal management method for a pure electric mining vehicle, the integrated thermal management method for a pure electric mining vehicle is applied to a vehicle controller in an integrated thermal management system of the pure electric mining vehicle, the integrated thermal management system of the pure electric mining vehicle also includes a chassis motor cooling system and a power battery thermal management system, the chassis motor cooling system includes a heat source device, a temperature sensor and a first water circuit, the power battery thermal management system includes a thermal management unit, a power battery and a second water circuit, the temperature sensor is located at the water outlet of the heat source device, the first water circuit is used to cool the heat source device, the second water circuit is used to adjust the temperature of the power battery, the first water circuit and the second water circuit are connected through a switch assembly, the integrated thermal management method for the pure electric mining vehicle includes:

[0021] Obtaining the operating status of the thermal management unit;

[0022] When the operating state is the working state, receiving the temperature control target of the power battery sent by the thermal management unit;

[0023] If the temperature adjustment target is to increase the temperature, obtaining a first water temperature output by the temperature sensor, a second water temperature output by the thermal management unit at its water outlet, and a cell temperature of the power battery;

[0024] Determining whether an integration condition is met according to the first water temperature, the second water temperature, and the battery core temperature;

[0025] If the integration condition is met, the switch assembly is controlled to be in an on state, so that the water in the first water channel enters the second water channel to heat the power battery.

[0026] In a possible implementation, the integrated thermal management method for a pure electric mining vehicle further includes:

[0027] When the operating state is a non-operating state, the switch component is controlled to be in an off state.

[0028] In a possible implementation, the integrated thermal management method for a pure electric mining vehicle further includes:

[0029] If the temperature adjustment target is cooling, or the integration condition is not met, the switch component is controlled to be in an off state.

[0030] By means of the above technical scheme, the present application provides an integrated thermal management system and method for a pure electric mining vehicle, the system includes a chassis motor cooling system, a power battery thermal management system and a vehicle controller, a temperature sensor is set at the water outlet of the heat source device in the chassis motor cooling system, and the first water circuit of the chassis motor cooling system and the second water circuit of the power battery thermal management system are connected through a switch component. The vehicle controller obtains the operating state of the thermal management unit; when the operating state is the working state, the temperature control target of the power battery sent by the thermal management unit is received; if the temperature control target is to increase the temperature, the first water temperature output by the temperature sensor, the second water temperature output by the thermal management unit at its water outlet, and the battery cell temperature of the power battery are obtained; according to the first water temperature, the second water temperature and the battery cell temperature, it is judged whether the integration condition is met; if it is met, the switch component is controlled to be in the on state, so that the water in the first water circuit enters the second water circuit to increase the temperature of the power battery. The present application can introduce the heat generated by the chassis motor cooling system into the power battery thermal management system. When the power battery needs to be heated up, this part of the heat will pass through the power battery through the water path to heat the power battery, so that the power battery can reach a suitable operating temperature faster, reducing the heating time of the power battery by the thermal management unit. In addition, the temperature of the water returning from the power battery by the chassis motor cooling system will also be reduced, which will greatly improve the cooling effect of the chassis motor cooling system and improve the adaptability of the motor to working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the accompanying drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and the originals and elements are not necessarily drawn to scale.

[0032] Figure 1 A schematic diagram of the structure of an integrated thermal management system for a pure electric mining vehicle provided in an embodiment of the present application;

[0033] Figure 2 Another structural schematic diagram of an integrated thermal management system for a pure electric mining vehicle provided in an embodiment of the present application;

[0034] Figure 3 A schematic flow chart of an integrated thermal management method for a pure electric mining vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0035] The following describes the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. The terms used in the implementation method section of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application.

[0036] The embodiments of the present application are described below in conjunction with the accompanying drawings. Those skilled in the art will appreciate that, with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0037] The terms "first", "second" etc. in the specification of the application and the above-mentioned drawings are used to distinguish similar objects, and need not be used to describe a specific order or sequential order. It should be understood that the terms used in this way can be interchangeable in appropriate circumstances, and this is only to describe the distinction mode adopted by the objects of the same attributes when describing in the embodiments of the application. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, so that the process, method, system, product or equipment comprising a series of units need not be limited to those units, but may include other units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0038] See also Figure 1 , Figure 1 This is a schematic diagram of the structure of an integrated thermal management system for a pure electric mining vehicle provided in an embodiment of the present application. Figure 1 As shown, an integrated thermal management system for a pure electric mining vehicle provided in an embodiment of the present application includes a chassis motor cooling system A, a power battery thermal management system B and a vehicle controller ( Figure 1 not shown).

[0039] like Figure 1 As shown, the chassis motor cooling system A includes a motor A-1, a controller A-2, an electronic water pump A-3, a radiator assembly A-4 and an expansion water tank A-5. The motor A-1, the controller A-2, the electronic water pump A-3 and the radiator assembly A-4 are connected through a first water circuit A-6. The radiator assembly A-4 and the expansion water tank A-5 are connected through a degassing pipe, and the expansion water tank E is connected to the first water circuit A-6 through a water supply pipe. The motor A-1 is used to drive the whole vehicle to work, and the controller A-2 is used to control the work of the motor A-1. Therefore, the motor A-1 and the controller A-2 serve as heat source devices of the chassis motor cooling system A. In addition, the electronic water pump A-3 is used to drive the circulation of the first water circuit A-6, and the radiator assembly A-4 takes away the heat on the fins through the electronic fan to dissipate the hot water in the first water circuit A-6.

[0040] Continue to see Figure 1The power battery thermal management system B includes a thermal management unit B-1 and a power battery B-2, and the thermal management unit B-1 and the power battery B-2 are connected through a second water path B-3. In addition, the power battery thermal management system B also includes a battery management system (Battery Management System, BMS, Figure 1 The power battery B-2 is used as the energy source of the whole vehicle, and drives the whole vehicle to operate through charging and discharging. During the charging and discharging process of the power battery B-2, the internal battery cells need to work within a suitable temperature range. The BMS manages the thermal management unit B-1 by monitoring the battery cell temperature of the power battery G, and adjusts the temperature of the water in the second water path B-3 through the thermal management unit B-1 to heat or cool the power battery B-2.

[0041] The applicant has found through research that if the power battery B-2 needs to be heated up, the heat generated by the chassis motor cooling system A can be introduced into the water circuit of the power battery thermal management system B, and the hot water from the motor A-1 can be used to heat the power battery B-2. This not only improves energy utilization and enables the power battery B-2 to reach the allowable operating temperature range faster, but also reduces the working time of the thermal management unit B-1 and saves electricity. In addition, the water temperature flowing through the power battery thermal management system B and then flowing into the radiator assembly A-4 will be lower, and the temperature of the water outlet of the radiator assembly A-4 will also be lower, which will also make the cooling effect of the chassis motor cooling system A better.

[0042] In this regard, in the embodiment of the present application, a temperature sensor C is provided at the water outlet of the heat source device of the chassis motor cooling system A. Figure 1 As shown, the temperature sensor C is located at the water outlet of the motor A-1 to ensure the accuracy of the water temperature monitoring of the first water path A-6. In addition, the first water path A-6 and the second water path B-3 are connected through a switch assembly D.

[0043] The vehicle controller is used to obtain the operating status of the thermal management unit B-1; when the operating status is the working status, it receives the temperature control target of the power battery B-2 sent by the thermal management unit B-1; if the temperature control target is heating, it obtains the first water temperature output by the temperature sensor C, the second water temperature output by the thermal management unit B-1 at its water outlet, and the battery cell temperature of the power battery B-2; it determines whether the integration condition is met according to the first water temperature, the second water temperature and the battery cell temperature; if the integration condition is met, it controls the switch component D to be in the on state to allow the water in the first water path A-6 to enter the second water path B-3 to heat the power battery.

[0044] In the embodiment of the present application, the thermal management unit B-1 can report its operating status to the vehicle controller in real time, and the operating status includes a working status and a non-working status. In the working status, the thermal management unit B-1 adjusts the temperature (heating up or cooling) of the water in the second water channel B-3 to make the power battery B-2 enter the allowable operating temperature range. In the non-working status, the thermal management unit B-1 indicates that the power battery B-2 has entered the allowable operating temperature range and no temperature adjustment is required.

[0045] When the operation state of the thermal management unit B-1 is in the working state, the vehicle controller receives the temperature control target for the power battery sent by the thermal management unit B-1, which is heating or cooling. If the temperature control target is heating, the vehicle controller obtains the first water temperature output by the temperature sensor C, the second water temperature output by the thermal management unit B-1, and the battery cell temperature of the power battery B-2, wherein the second water temperature is detected by the temperature sensor located at the water outlet of the thermal management unit B-1 and then sent to the vehicle controller by the thermal management unit B-1, and the battery cell temperature is reported to the vehicle controller by the BMS. The vehicle controller determines whether the integration condition is currently met based on the first water temperature, the second water temperature and the battery cell temperature, and when the integration condition is met, controls the switch assembly D to be in the on state, so that the water in the first water path A-6 enters the second water path B-3 to heat the power battery B-2. This can introduce the heat generated by the chassis motor cooling system into the power battery thermal management system to heat the power battery.

[0046] See also Figure 2 , Figure 2 Another structural schematic diagram of an integrated thermal management system for a pure electric mining vehicle provided in an embodiment of the present application. Figure 2 As shown, the first water channel A-6 is provided with a first connection point a1 and a second connection point a2. The first connection point a1 is located at the downstream end of the first water channel A-6 flowing through the motor A-1, and the second connection point a2 is located at the downstream end of the first water channel A-6 flowing through the first connection point a1.

[0047] A third connection point b1 and a fourth connection point b2 are provided on the second water channel B-3. The third connection point b1 is located at the upstream end of the second water channel B-3 flowing through the power battery B-2, and the fourth connection point b2 is located at the downstream end of the second water channel B-3 flowing through the power battery B-2.

[0048] The first connection point a1, the second connection point a2, the third connection point b1 and the fourth connection point b2 are respectively provided with water channel tees for connecting the first water channel with the second water channel through water channels.

[0049] Continue to see Figure 2The switch assembly D includes a first electromagnetic on-off valve D-1, a second electromagnetic on-off valve D-2 and a third electromagnetic on-off valve D-3. The first electromagnetic on-off valve D-1 is located on the waterway between the first connection point a1 and the second connection point a2, the second electromagnetic on-off valve D-2 is located on the waterway between the first connection point a1 and the third connection point b1, and the third electromagnetic on-off valve D-3 is located on the waterway between the second connection point a2 and the fourth connection point b2.

[0050] In one possible implementation, when the vehicle controller controls the switch assembly D to be in the on state, the first electromagnetic on-off valve D-1 can be controlled to open, the second electromagnetic on-off valve D-2 can be controlled to open, and the third electromagnetic on-off valve D-3 can be controlled to close. This allows a portion of the water in the first water path A-6 to enter the second water path B-3 to heat up the power battery B-2. However, at this time, the water flowing into the second water path B-3 from the first water path A-6 cannot flow back to the first water path A-6, resulting in the expansion water tank A-5 needing to provide a large amount of water for the first water path A-6.

[0051] In this regard, in a possible implementation, when the vehicle controller controls the switch assembly D to be in the on state, the first electromagnetic on-off valve D-1 can be controlled to be closed, the second electromagnetic on-off valve D-2 can be controlled to be opened, and the third electromagnetic on-off valve D-3 can be controlled to be opened, so that the water in the first water circuit A-6 can flow through the second electromagnetic on-off valve D-2, the power battery B-2 and the third electromagnetic on-off valve D-3 and then flow back to the first water circuit A-6.

[0052] In a possible implementation, when the operating state of the thermal management unit B-1 is in a non-operating state, the vehicle controller can also control the switch component D to be in an off state. Figure 2 When the vehicle controller controls the switch assembly D in the disconnected state, the first electromagnetic on-off valve D-1 can be controlled to open, the second electromagnetic on-off valve D-2 can be controlled to close, and the third electromagnetic on-off valve D-3 can be controlled to close. At this time, the chassis motor cooling system A and the power battery thermal management system B are two independent systems, and the water circuits do not affect each other.

[0053] In a possible implementation, when the operation state of the thermal management unit B-1 is in the working state, if the temperature control target of the power battery B-2 is cooling, or the integration condition is not met, the vehicle controller can also control the switch component D to be in the disconnected state. Figure 2 When the vehicle controller controls the switch assembly D in the disconnected state, the first electromagnetic on-off valve D-1 can be controlled to open, the second electromagnetic on-off valve D-2 can be controlled to close, and the third electromagnetic on-off valve D-3 can be controlled to close. At this time, the chassis motor cooling system A and the power battery thermal management system B are two independent systems, and the water circuits do not affect each other.

[0054] In a possible implementation, the vehicle controller determines whether the integration condition is currently met by comparing the first water temperature, the second water temperature and the battery cell temperature. In this regard, the vehicle controller used to determine whether the integration condition is met according to the first water temperature, the second water temperature and the battery cell temperature is specifically used to:

[0055] Determine whether the second water temperature is greater than the battery cell temperature; if the second water temperature is greater than the battery cell temperature, determine whether the first water temperature is greater than the battery cell temperature; if the first water temperature is greater than the battery cell temperature, determine that the integration conditions are met; if the first water temperature is not greater than the battery cell temperature, determine that the integration conditions are not met; if the second water temperature is not greater than the battery cell temperature, determine whether the first water temperature is greater than the second water temperature; if the first water temperature is greater than the second water temperature, determine that the integration conditions are met; if the first water temperature is not greater than the second water temperature, determine that the integration conditions are met.

[0056] In the embodiment of the present application, the vehicle controller first compares the second water temperature with the battery cell temperature to determine whether the second water temperature is greater than the battery cell temperature.

[0057] If the second water temperature is greater than the battery cell temperature, it means that the water temperature of the second water circuit B-3 is higher than the battery cell temperature, and the power battery thermal management system B has the ability to heat up the power battery B-2. In this regard, further determine whether the first water temperature is greater than the battery cell temperature. If the first water temperature is greater than the battery cell temperature, it means that the water temperature of the first water circuit A-6 is also higher than the battery cell temperature. In order to quickly heat up the power battery, the heat generated by the chassis motor cooling system A can be introduced into the power battery thermal management system B. At this time, it can be determined that the integration conditions are currently met. If the first water temperature is less than or equal to the battery cell temperature, it means that the water temperature of the first water circuit A-6 is not higher than the battery cell temperature and cannot heat up the power battery. At this time, it can be determined that the integration conditions are not currently met.

[0058] If the second water temperature is less than or equal to the battery cell temperature, it means that the water temperature of the second water circuit B-3 is not higher than the battery cell temperature, and further determine whether the first water temperature is greater than the second water temperature. If the first water temperature is greater than the second water temperature, it means that the water temperature of the first water circuit A-6 is higher than the water temperature of the second water circuit B-3, and the heat generated by the chassis motor cooling system A can be introduced into the power battery thermal management system B. At this time, it can be determined that the integration conditions are currently met. If the first water temperature is less than or equal to the second water temperature, it means that the water temperature of the first water circuit A-6 is not higher than the water temperature of the second water circuit B-3, and the power battery cannot be heated. At this time, it can be determined that the integration conditions are currently not met.

[0059] It should be noted that in the embodiment of the present application, while the vehicle controller controls the switch assembly D to conduct the heat generated by the chassis motor cooling system A into the power battery thermal management system B, the thermal management unit B-1 can heat the water in the second water circuit B-3 to meet the working requirements of the power battery. The embodiment of the present application does not limit this.

[0060] Through the above description, an integrated thermal management system for a pure electric mining vehicle provided in an embodiment of the present application can introduce the heat generated by the chassis motor cooling system into the power battery thermal management system. When the power battery needs to be heated up, this part of the heat will pass through the power battery through the water path to heat the power battery, so that the power battery can reach a suitable operating temperature faster, reducing the heating time of the power battery by the thermal management unit, and the temperature of the water refluxed from the power battery by the chassis motor cooling system will also be reduced, which will greatly improve the cooling effect of the chassis motor cooling system and improve the adaptability of the motor to working conditions.

[0061] An integrated thermal management system for a pure electric mining vehicle provided in an embodiment of the present application is introduced above, and an integrated thermal management method for a pure electric mining vehicle will be introduced below.

[0062] See also Figure 3 , Figure 3 A flow chart of an integrated thermal management method for a pure electric mining vehicle provided in an embodiment of the present application. The integrated thermal management method for a pure electric mining vehicle is applied to the vehicle controller in the integrated thermal management system of the pure electric mining vehicle. The integrated thermal management system of the pure electric mining vehicle also includes a chassis motor cooling system and a power battery thermal management system. The chassis motor cooling system includes a heat source device, a temperature sensor and a first water circuit. The power battery thermal management system includes a thermal management unit, a power battery and a second water circuit. The temperature sensor is located at the water outlet of the heat source device. The first water circuit is used to cool the heat source device, and the second water circuit is used to adjust the temperature of the power battery. The first water circuit and the second water circuit are connected via a switch assembly. Figure 3 As shown, an integrated thermal management method for a pure electric mining vehicle provided in an embodiment of the present application includes the following steps:

[0063] S10, obtaining the operating status of the thermal management unit.

[0064] S20, when the running state is the working state, receiving the temperature control target of the power battery sent by the thermal management unit.

[0065] S30: If the temperature adjustment target is to increase the temperature, obtain a first water temperature output by the temperature sensor, a second water temperature output by the thermal management unit at its water outlet, and a cell temperature of the power battery.

[0066] S40, judging whether the integration condition is met according to the first water temperature, the second water temperature and the battery cell temperature; if so, executing step S50.

[0067] S50, controlling the switch assembly to be in an on state, so that the water in the first water channel enters the second water channel to heat the power battery.

[0068] In a possible implementation, the heat source device includes: a motor and a controller, and the temperature sensor is located at a water outlet of the motor.

[0069] In a possible implementation, a first connection point and a second connection point are provided on the first waterway, the first connection point is located at the downstream end of the first waterway flowing through the motor, and the second connection point is located at the downstream end of the first waterway flowing through the first connection point;

[0070] A third connection point and a fourth connection point are provided on the second waterway, the third connection point is located at the upstream end of the second waterway flowing through the power battery, and the fourth connection point is located at the downstream end of the second waterway flowing through the power battery;

[0071] The first connection point, the second connection point, the third connection point and the fourth connection point are respectively provided with waterway tees for connecting the first waterway with the second waterway through the waterway;

[0072] The switch assembly includes a first electromagnetic on-off valve, a second electromagnetic on-off valve and a third electromagnetic on-off valve. The first electromagnetic on-off valve is located on the waterway between the first connection point and the second connection point, the second electromagnetic on-off valve is located on the waterway between the first connection point and the third connection point, and the third electromagnetic on-off valve is located on the waterway between the second connection point and the fourth connection point.

[0073] In a possible implementation, in the above step S50, “controlling the switch component to be in a conducting state” may be performed by the following steps:

[0074] The first electromagnetic on-off valve is controlled to be closed, and the second and third electromagnetic on-off valves are controlled to be opened, so that the water in the first water path flows back to the first water path after passing through the second electromagnetic on-off valve, the power battery and the third electromagnetic on-off valve.

[0075] In a possible implementation, the integrated thermal management method for the pure electric mining vehicle further includes the following steps:

[0076] When the operating state is a non-working state, the control switch component is in a disconnected state.

[0077] In a possible implementation, the integrated thermal management method for the pure electric mining vehicle further includes the following steps:

[0078] If the temperature control target is cooling, or the integration condition is not met, the control switch component is in the disconnected state.

[0079] In a possible implementation, the above step S40 "determining whether the integration condition is met according to the first water temperature, the second water temperature and the battery cell temperature" can adopt the following steps:

[0080] Determine whether the second water temperature is greater than the battery core temperature;

[0081] If the second water temperature is greater than the battery core temperature, determining whether the first water temperature is greater than the battery core temperature;

[0082] If the first water temperature is greater than the battery cell temperature, it is determined that the integration condition is met;

[0083] If the first water temperature is not greater than the battery cell temperature, it is determined that the integration condition is not met;

[0084] If the second water temperature is not greater than the battery core temperature, determining whether the first water temperature is greater than the second water temperature;

[0085] If the first water temperature is greater than the second water temperature, it is determined that the integration condition is met;

[0086] If the first water temperature is not greater than the second water temperature, it is determined that the integration condition is not met.

[0087] It should be noted that the specific implementation of each step in the embodiment of the present application can be found in the corresponding disclosed part of the embodiment of the integrated thermal management system of the above-mentioned pure electric mining vehicle, which will not be repeated here.

[0088] The above is a detailed introduction to the integrated thermal management system and method for a pure electric mining vehicle provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application; at the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

[0089] It should be noted that each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0090] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device that includes a series of elements is inherent to the elements, or also includes elements inherent to these processes, methods, articles or devices. In the absence of further restrictions, the elements defined by the sentence "including a..." do not exclude the presence of other identical elements in the process, method, article or device that includes the elements.

[0091] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An integrated thermal management system for a pure electric mining vehicle, characterized in that: The integrated thermal management system of the pure electric mining vehicle includes: a chassis motor cooling system, a power battery thermal management system and a vehicle controller. The chassis motor cooling system includes a heat source device, a temperature sensor and a first water circuit. The power battery thermal management system includes a thermal management unit, a power battery and a second water circuit. The temperature sensor is located at the water outlet of the heat source device. The first water circuit is used to cool the heat source device. The second water circuit is used to adjust the temperature of the power battery. The first water circuit and the second water circuit are connected through a switch assembly. The vehicle controller is used to obtain the operating status of the thermal management unit; when the operating status is the working status, receive the temperature control target of the power battery sent by the thermal management unit; if the temperature control target is heating, obtain the first water temperature output by the temperature sensor, the second water temperature output by the thermal management unit at its water outlet, and the battery cell temperature of the power battery; determine whether the integration condition is met based on the first water temperature, the second water temperature and the battery cell temperature; if the integration condition is met, control the switch component to be in the on state so that the water in the first water path enters the second water path to heat the power battery.

2. The integrated thermal management system of a pure electric mining vehicle according to claim 1, characterized in that: The heat source device comprises: a motor and a controller, and the temperature sensor is located at the water outlet of the motor.

3. The integrated thermal management system of a pure electric mining vehicle according to claim 2, characterized in that: The first waterway is provided with a first connection point and a second connection point, the first connection point is located at the downstream end of the first waterway flowing through the motor, and the second connection point is located at the downstream end of the first waterway flowing through the first connection point; A third connection point and a fourth connection point are provided on the second waterway, the third connection point is located at an upstream end of the second waterway flowing through the power battery, and the fourth connection point is located at a downstream end of the second waterway flowing through the power battery; The first connection point, the second connection point, the third connection point and the fourth connection point are respectively provided with waterway tees for connecting the first waterway with the second waterway through a waterway; The switch assembly includes a first electromagnetic on-off valve, a second electromagnetic on-off valve and a third electromagnetic on-off valve, the first electromagnetic on-off valve is located on the waterway between the first connection point and the second connection point, the second electromagnetic on-off valve is located on the waterway between the first connection point and the third connection point, and the third electromagnetic on-off valve is located on the waterway between the second connection point and the fourth connection point.

4. The integrated thermal management system of a pure electric mining vehicle according to claim 3, characterized in that: The vehicle controller for controlling the switch assembly to be in an on state is specifically used for: The first electromagnetic on-off valve is controlled to be closed, and the second electromagnetic on-off valve and the third electromagnetic on-off valve are controlled to be opened, so that the water in the first water path flows back to the first water path after passing through the second electromagnetic on-off valve, the power battery and the third electromagnetic on-off valve.

5. The integrated thermal management system of a pure electric mining vehicle according to claim 1, characterized in that: The vehicle controller is also used for: When the operating state is a non-operating state, the switch component is controlled to be in an off state.

6. The integrated thermal management system of a pure electric mining vehicle according to claim 1, characterized in that: The vehicle controller is also used for: If the temperature adjustment target is cooling, or the integration condition is not met, the switch component is controlled to be in an off state.

7. The integrated thermal management system of a pure electric mining vehicle according to claim 1, characterized in that: The vehicle controller used to judge whether the integration condition is met according to the first water temperature, the second water temperature and the battery core temperature, is specifically used to: Determine whether the second water temperature is greater than the battery core temperature; if the second water temperature is greater than the battery core temperature, determine whether the first water temperature is greater than the battery core temperature; if the first water temperature is greater than the battery core temperature, determine that the integration condition is met; if the first water temperature is not greater than the battery core temperature, determine that the integration condition is not met; If the second water temperature is not greater than the battery core temperature, determining whether the first water temperature is greater than the second water temperature; if the first water temperature is greater than the second water temperature, determining that the integration condition is met; If the first water temperature is not greater than the second water temperature, it is determined that the integration condition is not met.

8. An integrated thermal management method for a pure electric mining vehicle, characterized in that: The integrated thermal management method of the pure electric mining vehicle is applied to the vehicle controller in the integrated thermal management system of the pure electric mining vehicle. The integrated thermal management system of the pure electric mining vehicle also includes a chassis motor cooling system and a power battery thermal management system. The chassis motor cooling system includes a heat source device, a temperature sensor and a first water circuit. The power battery thermal management system includes a thermal management unit, a power battery and a second water circuit. The temperature sensor is located at the water outlet of the heat source device. The first water circuit is used to cool the heat source device, and the second water circuit is used to adjust the temperature of the power battery. The first water circuit and the second water circuit are connected through a switch assembly. The integrated thermal management method of the pure electric mining vehicle includes: Obtaining the operating status of the thermal management unit; When the operating state is the working state, receiving the temperature control target of the power battery sent by the thermal management unit; If the temperature adjustment target is to increase the temperature, obtaining a first water temperature output by the temperature sensor, a second water temperature output by the thermal management unit at its water outlet, and a cell temperature of the power battery; Determining whether an integration condition is met according to the first water temperature, the second water temperature, and the battery core temperature; If the integration condition is met, the switch assembly is controlled to be in an on state, so that the water in the first water channel enters the second water channel to heat the power battery.

9. The integrated thermal management method for a pure electric mining vehicle according to claim 8, characterized in that: The integrated thermal management method of the pure electric mining vehicle also includes: When the operating state is a non-operating state, the switch component is controlled to be in an off state.

10. The integrated thermal management method for a pure electric mining vehicle according to claim 8, characterized in that: The integrated thermal management method of the pure electric mining vehicle also includes: If the temperature adjustment target is cooling, or the integration condition is not met, the switch component is controlled to be in an off state.

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