Energy storage center, heat management unit and control method of heat management unit

Abstract

The invention relates to a thermal management unit. The thermal management unit comprises a first load; a second load; the cold carrying module comprises a first loop, the first loop comprises a first pump, and the first loop is used for heat management of a first load; the second loop can be connected with the first loop through a first valve, the second loop is used for heat management of the first load and / or the second load, and the second loop comprises a second pump and a dry cooler module; when preset conditions are met, the dry cooler module can conduct heat management on the first load and the second load at the same time through switching of the first valve, and good economical efficiency and high heat management efficiency are achieved.

Description

Technical Field

[0001] The present application relates to the field of thermal management units, and in particular to a chiller. Background Art

[0002] At present, in the energy storage container integrated system, the application technology of liquid cooling as the cooling method has been widely promoted. However, in the current liquid cooling heat dissipation system, the cold source or heat source is mainly provided by a water cooling unit to provide cooling or heating needs for the battery cell, and most of the heat dissipation methods of the PCS (Power Conversion System, energy storage converter) in the energy storage system are air-cooled, and its cooling efficiency is relatively low. The existing PCS liquid cooling unit generally integrates the energy storage battery and the PCS module into a cooling loop to cool the energy storage battery and the PCS module at the same time. However, this method has low energy efficiency and the effect is not ideal. Summary of the invention

[0003] In order to solve the above problems, the present application provides a thermal management unit in the first aspect, comprising:

[0004] First load;

[0005] Second load;

[0006] A cooling module, the cooling module includes a first circuit, the first circuit includes a first pump, and the first circuit is used for thermal management of a first load;

[0007] The second circuit can be connected to the first circuit through the first valve component, and the second circuit is used for thermal management of the first load and / or the second load. The second circuit includes a second pump and a dry cooler module. By setting the dry cooler module to perform thermal management for the first load, when a predetermined condition is met, the dry cooler module can be switched by the first valve component to achieve thermal management for the first load and the second load at the same time, thereby achieving good economy and high thermal management efficiency.

[0008] Optionally, the first valve component includes an inlet valve and an outlet valve, the inlet valve includes valve port A, valve port B, and valve port C, valve port A and valve port B are respectively connected to the second circuit, valve port A is connected to the outlet of the second pump, valve port B is connected to the inlet of the second pump, and valve port C is connected to the outlet of the first pump; the outlet valve includes valve port D, valve port E, and valve port F, valve port D and valve port E are respectively connected to the first circuit, valve port D is connected to the outlet of the first pump, valve port E is connected to the inlet of the first pump, and valve port F is connected to the outlet of the second pump; pipeline switching is achieved by two three-way valves, with high efficiency and simple structure.

[0009] Optionally, the first valve component includes valve port G, valve port H, valve port I, and valve port J, valve port G is connected to the outlet of the first pump, valve port H is connected to the inlet of the first pump, valve port I is connected to the outlet of the second pump, and valve port J is connected to the inlet of the second pump. The first valve component has at least a first state and a second state. In the first state, valve port H is connected to valve port G, and valve port J is connected to valve port I; in the second state, valve port H is connected to valve port I, and valve port J is connected to valve port G; the four-way valve solution system is simpler, the management system is more simplified, and the efficiency is higher.

[0010] Optionally, the second circuit includes a first branch and a second branch connected in parallel, the first branch is used to set a second load and is provided with a second pump, the second branch is provided with a second valve component, the second valve component includes a one-way valve, the one-way valve includes a valve port L and a valve port M, the valve port L is connected to the valve port B, and the valve port M is connected to the valve port A or the valve port F; when the first circuit is connected to the second circuit, the regulating valve can adjust the flow distribution of the first branch and the second branch as needed, so that more working fluid passes through the second branch, which can simultaneously speed up the circulation speed of the second circuit, improve the thermal management efficiency, and take into account the thermal management of the first load and the second load, while the second load is allocated a smaller working fluid flow rate by the second branch to ensure that the thermal management of the second load is carried out normally, the parallel branches make the flow coordination of the working fluid more coordinated, and the thermal management distribution is more intelligent and efficient, and the setting of the one-way valve can prevent the working fluid of the second branch from flowing back through the first branch, making the working fluid flow of the second circuit more coordinated.

[0011] Optionally, the second circuit includes a first branch and a second branch connected in parallel, the first branch is used to set a second load and is provided with a second pump, the second branch is provided with a second valve component, the second valve component includes a one-way valve, the one-way valve includes a valve port L and a valve port M, the one-way valve flows in from valve port L and flows out from valve port M, valve port L is connected to valve port J, and valve port M is connected to valve port I; the parallel branches make the flow coordination of the working fluid more coordinated and the thermal management distribution more intelligent and efficient. The setting of the one-way valve can prevent the working fluid of the second branch from backflowing through the first branch, making the flow of the working fluid in the second circuit more coordinated.

[0012] Optionally, it also includes a refrigeration module and an intermediate heat exchanger. The refrigeration module and the cooling module exchange heat through the intermediate heat exchanger. The refrigeration module, the intermediate heat exchanger, and the cooling module are connected by pipelines.

[0013] Optionally, the refrigeration module includes a first refrigeration module and a second refrigeration module, the first refrigeration module and the second refrigeration module are arranged in parallel, the first refrigeration module includes a condenser, a throttling element and a compressor, and the second refrigeration module includes a condenser, a throttling element and a compressor; the refrigeration module has two refrigeration modules, the first refrigeration module and the second refrigeration module back up each other, which can improve the reliability and continuous stability of the refrigeration module and ensure the normal operation of the first load.

[0014] Optionally, at least one of the refrigeration module, the cooling module, and the second circuit is provided with a temperature sensor; the temperature sensor is used to collect the ambient temperature; the thermal management unit is provided with multiple temperature sensors, which can accurately detect the ambient temperature, facilitating adjustments to the unit.

[0015] Also disclosed is an energy storage center, comprising any of the above-mentioned thermal management units, and also comprising

[0016] A working compartment is used to install a first load and / or a second load, the first load is an energy storage battery, and the second load is a PCS module;

[0017] The refrigeration module and the intermediate heat exchanger of the thermal management unit are arranged outside the working chamber, and part of the first circuit of the cooling module extends into the working chamber to perform thermal management on the first load.

[0018] Part of the second circuit extends into the working compartment to perform thermal management on the first load and / or the second load; thermal management is performed for the energy storage battery through mechanical refrigeration of the first circuit, and refrigeration is provided for the PCS through the dry cooler module of the second circuit, and the first circuit and the second circuit are connected under preset conditions, and the dry cooler module provides joint refrigeration for the energy storage battery and the PCS module. For example, in the north or in winter, it can ensure sufficient refrigeration of the PCS module, and can make full use of the ambient temperature difference to share or replace the work of mechanical refrigeration, with higher energy efficiency, lower cost and good economic value.

[0019] The present application also discloses a control method for a thermal management unit, comprising the following steps:

[0020] Sense the ambient temperature T and feed it back to the main control board;

[0021] The ambient temperature T and the preset temperature T0 are judged. When T≥T0, the first valve component is controlled to operate in the first mode, the first circuit performs thermal management on the first load, and the second circuit performs thermal management on the second load; when T<T0, the first valve component is controlled to operate in the second mode, the second circuit is connected to the first circuit, and thermal management of the first load and the second load is performed.

[0022] The main control board determines the ambient temperature T and the preset temperature T0, specifically including the following steps: when T≥T0, the valve port A of the inlet valve is connected to the valve port B, and the valve port C is closed; the valve port D of the outlet valve is connected to the valve port E, and the valve port F is closed; when T<T0, the main control board controls the valve port A of the inlet valve to be closed, and the valve port C is connected to the valve port B; the valve port E of the outlet valve is connected to the valve port F, and the valve port D is closed, and the refrigeration module operates at low power or is at least partially closed; the ambient temperature difference can be fully and flexibly utilized to perform thermal management for the first load and the second load, ensuring that the PCS module can be fully cooled, and as a supplement or substitute for the first load, the economic benefit is higher.

[0023] The main control board determines the ambient temperature T and the preset temperature T0 specifically including the following steps: when T≥T0, the valve port G of the first valve component is connected to the valve port H, and the valve port I is connected to the inlet J; when T<T0, the valve port G of the first valve component is connected to the valve port J, and the valve port I is connected to the valve port H, and the refrigeration module operates at low power or is at least partially closed; the ambient temperature difference can be fully and flexibly utilized to perform thermal management for the first load and the second load, ensuring that the PCS module can be fully cooled, and as a supplement or substitute for the first load, it has higher economic benefits.

[0024] A control device is also disclosed, including a processor and a memory, wherein the memory stores a computer program that can be executed by the processor, and when the computer program is executed by the processor, a control method for a thermal management unit as described above is implemented.

[0025] A computer-readable storage medium is also disclosed. A computer program is stored on the computer-readable storage medium. When the computer program is executed by a controller, any of the above-mentioned control methods for a thermal management unit is implemented.

[0026] The present invention sets a dry cooler module to perform thermal management for the second load. When a predetermined condition is met, the dry cooler module can be switched by the first valve to perform thermal management for the first load and the second load at the same time, thereby achieving good economy and high thermal management efficiency.

[0027] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of Example 1 of the present application;

[0029] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0030] Figure 3 for Figure 1 The enlarged view of point B in the middle;

[0031] Figure 4 This is a schematic diagram of the first mode of Example 2;

[0032] Figure 5 This is a schematic diagram of the second mode of Example 2;

[0033] Figure 6 is a schematic diagram of the first mode of Example 4;

[0034] Figure 7 for Figure 6 The enlarged image of the middle C;

[0035] Figure 8is a schematic diagram of the second mode of Example 4;

[0036] Fig. 9 for Figure 8 The enlarged view of point D in the middle;

[0037] Reference numerals:

[0038] 1- cooling module, 11- first pump 11

[0039] 2-First load

[0040] 3-first valve member, 31-inlet valve, 311-valve port A, 312-valve port B, 313-valve port C, 32-outlet valve, 314-valve port D, 315-valve port E, 316-valve port F, 317-valve port G, 318-valve port H, 319-valve port I, 320-valve port J

[0041] 4- Second load

[0042] 5- Second pump

[0043] 6-Dry cooler module

[0044] 7-second valve member, 71-check valve, 711-valve port L, 712-valve port M

[0045] 8-refrigeration module, 81-first refrigeration module, 82-second refrigeration module

[0046] 9-Intermediate heat exchanger

[0047] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0048] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0049] It should be clear that the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0050] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0051] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0052] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described at the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element.

[0053] Example 1

[0054] A thermal management unit, comprising

[0055] First load 2;

[0056] Second load 4;

[0057] A cooling module 1, the cooling module 1 comprises a first circuit, the first circuit comprises a first pump 11, and the first circuit is used for thermal management of a first load 2;

[0058] The second circuit can be connected to the first circuit through the first valve component 3. The second circuit is used for thermal management of the first load 2 and / or the second load 4. The second circuit includes a second pump 5 and a dry cooler module 6. In this embodiment, the cold load side has two circuits, namely the first circuit and the second circuit. The first circuit is provided with refrigeration by the refrigeration module 8, which is mechanical refrigeration. The second circuit has its own dry cooler module 6. Under normal circumstances, it is relatively independent of the first circuit. The first circuit is responsible for the thermal management of the first load 2, and the second circuit is responsible for the thermal management of the second load 4. After the predetermined conditions are met, the first valve component 3 can connect the first circuit with the second circuit. The dry cooler module 6 of the second circuit can provide supplementary thermal management for the first circuit. Since the dry cooler module 6 is liquid-cooled and naturally cooled, the second circuit can provide sufficient cooling capacity for the second load 4. When the thermal management of the second load 4 is met, the second circuit is connected to the first circuit through the first valve component 3 to reduce or replace mechanical refrigeration, which is more economical.

[0059] Optionally, the first valve component 3 includes an inlet valve 31 and an outlet valve 32, the inlet valve 31 includes a valve port A311, a valve port B312, and a valve port C313, the valve port A311 and the valve port B312 are respectively connected to the second circuit, the valve port A311 is connected to the outlet of the second pump 5, the valve port B312 is connected to the inlet of the second pump 5, and the valve port C313 is connected to the outlet of the first pump 11; the outlet valve 32 includes a valve port D314, a valve port E315, and a valve port F316, the valve port D314 and the valve port E315 are respectively connected to the first circuit, the valve port D314 is connected to the outlet of the first pump 11, the valve port E315 is connected to the inlet of the first pump 11, and the valve port F316 is connected to the outlet of the second pump 5; in this embodiment, the first valve component 3 includes an inlet valve 31 and an outlet valve 32, both of which are three-way valves, and the inlet valve 31 is connected to the outlet of the first pump 11 through the valve port A3 11 is connected to the valve port B312 for the second loop to form a circulation loop of the second pump 5-dry cooler module 6-valve port A311-valve port B312-second load 4-second pump 5, the inlet valve 31 is arranged at the downstream section of the dry cooler module 6, and the outlet valve 32 is connected to the first loop through the valve port D314 and the valve port E315 to form a circulation loop of the first pump 11-valve port D314-valve port E315-intermediate heat exchanger 9-first load 2-first pump 11, the valve port C313 is connected between the outlet of the first pump 11 and the valve port D314, and the valve port F316 is connected between the outlet of the dry cooler module 6 and the valve port A311; in this embodiment, the inlet valve 31 and the outlet are both electric three-way valves, and in other embodiments, they can be other valves with three-way function, and the three-way valve is a prior art and will not be described here.

[0060] Optionally, the second circuit includes a first branch and a second branch connected in parallel, the first branch is used to set the second load 4 and is provided with a second pump 5, the second branch is provided with a second valve component 7, the second valve component 7 includes a one-way valve 71, the one-way valve 71 includes a valve port L711 and a valve port M712, the valve port L711 is connected to the valve port B312, and the valve port M712 is connected to the valve port A311 or the valve port F316; in this embodiment, the circulating working fluid will be divided into two paths in the second circuit, one path flows to the first branch for thermal management of the second load 4, and the other path passes through the second branch, and the second branch is provided with a one-way valve 71 and a regulating valve, When the first circuit is connected to the second circuit, the regulating valve can adjust the flow distribution between the first branch and the second branch as needed, so that more working fluid passes through the second branch, which can simultaneously speed up the circulation speed of the second circuit and improve the thermal management efficiency, taking into account the thermal management of the first load 2 and the second load 4. The second load 4 is allocated less working fluid flow from the second branch to ensure that the thermal management of the second load 4 is carried out normally. The parallel branches make the flow coordination of the working fluid more coordinated and the thermal management distribution more intelligent and efficient. The setting of the one-way valve 71 can prevent the working fluid of the second branch from flowing back through the first branch, making the flow of the working fluid in the second circuit more coordinated.

[0061] Optionally, it also includes a refrigeration module 8 and an intermediate heat exchanger 9. The refrigeration module 8 and the cooling module 1 exchange heat through the intermediate heat exchanger 9. The refrigeration module 8, the intermediate heat exchanger 9, and the cooling module 1 are connected by pipelines. The refrigeration module is mechanical refrigeration, which can ensure the thermal management of the first load 2. In this embodiment, the first load 2 is the main load and the second load 4 is the secondary load.

[0062] Optionally, at least one of the refrigeration module 8, the cooling module 1, and the second circuit is provided with a temperature sensor; the temperature sensor is used to collect the ambient temperature; in the present embodiment, the thermal management unit is provided with a plurality of temperature sensors, which can accurately detect the ambient temperature, and the temperature sensor can be provided in one of the refrigeration module 8, the cooling module 1, and the dry cooler module 6 of the second circuit, or in multiple locations; in other embodiments, the ambient temperature can be detected by other means.

[0063] Example 2

[0064] The difference from Example 1 is that, optionally, the refrigeration module 8 includes a first refrigeration module 81 and a second refrigeration module 82, the first refrigeration module 81 and the second refrigeration module 82 are arranged in parallel, the first refrigeration module 8 includes a condenser, a throttling element and a compressor, and the second refrigeration module 8 includes a condenser, a throttling element and a compressor; in this embodiment, the refrigeration module 8 has two refrigeration modules, the first refrigeration module 81 and the second refrigeration module 82 back up each other, which can improve the reliability and continuous stability of the refrigeration module 8 and ensure the normal operation of the first load 2.

[0065] Example 3

[0066] A thermal management unit, comprising

[0067] First load 2;

[0068] Second load 4;

[0069] A cooling module 1, the cooling module 1 comprises a first circuit, the first circuit comprises a first pump 11, and the first circuit is used for thermal management of a first load 2;

[0070] The second circuit can be connected to the first circuit through the first valve component 3. The second circuit is used for thermal management of the first load 2 and / or the second load 4. The second circuit includes a second pump 5 and a dry cooler module 6. In this embodiment, the cold load side has two circuits, namely the first circuit and the second circuit. The first circuit is provided with refrigeration by the refrigeration module 8, which is mechanical refrigeration. The second circuit has its own dry cooler module 6. Under normal circumstances, it is relatively independent of the first circuit. The first circuit is responsible for the thermal management of the first load 2, and the second circuit is responsible for the thermal management of the second load 4. After the predetermined conditions are met, the first valve component 3 can connect the first circuit with the second circuit. The dry cooler module 6 of the second circuit can provide supplementary thermal management for the first circuit. Since the dry cooler module 6 is liquid-cooled and naturally cooled, the second circuit can provide sufficient cooling capacity for the second load 4. When the thermal management of the second load 4 is met, the second circuit is connected to the first circuit through the first valve component 3 to reduce or replace mechanical refrigeration, which is more economical.

[0071] Optionally, the first valve component 3 includes a valve port G317, a valve port H318, a valve port I319, and a valve port J320, wherein the valve port G317 is connected to the outlet of the first pump 11, the valve port H318 is connected to the inlet of the first pump 11, the valve port I319 is connected to the outlet of the second pump 5, and the valve port J320 is connected to the inlet of the second pump 5. The first valve component 3 has at least a first state and a second state. In the first state, the valve port H318 is connected to the valve port G317, and the valve port J320 is connected to the valve port I319; in the second state, the valve port H318 is connected to the valve port I319, and the valve port J320 is connected to the valve port G317; in this embodiment, the first valve component 3 is a four-way valve. In the first state, the first circuit forms a first pump 11-valve port G317-valve The circulation loop of port H318-intermediate heat exchanger 9-first load 2-first pump 11, and the second loop forms a circulation loop of second pump 5, dry cooler module 6-valve port I319-valve port J320-second load 4-second pump 5. In the first state, the first loop is not connected to the second loop and circulates separately; in the second state, valve port G317 is connected to valve port J320, and valve port I319 is connected to valve port H318, forming a large circulation loop of second pump 5-dry cooler module 6-valve port I319-valve port H318-intermediate heat exchanger 9-first load 2-first pump 11-valve port G317-valve port J320-second load 4-second pump 5; the four-way valve solution system is simpler, the management system is more simplified, and the efficiency is higher.

[0072] Optionally, the second circuit includes a first branch and a second branch connected in parallel, the first branch is used to set the second load 4, and is provided with a second pump 5, the second branch is provided with a second valve component 7, the second valve component 7 includes a one-way valve 71, the one-way valve 71 includes a valve port L711 and a valve port M712, the one-way valve 71 flows in from the valve port L711 and flows out from the valve port M712, the valve port L711 is connected to the valve port J320, and the valve port M712 is connected to the valve port I319. In this embodiment, the circulating working fluid will be divided into two paths in the second circuit, one path flows to the first branch for thermal management of the second load 4, and the other path passes through the second branch, and a one-way valve is provided on the second branch. Valve 71 and the regulating valve, when the first circuit is connected to the second circuit, the regulating valve can adjust the flow distribution between the first branch and the second branch as needed, so that more working fluid passes through the second branch, which can simultaneously speed up the circulation speed of the second circuit, improve the thermal management efficiency, and take into account the thermal management of the first load 2 and the second load 4, while the second load 4 is allocated less working fluid flow by the second branch to ensure that the thermal management of the second load 4 is carried out normally. The parallel branches make the flow coordination of the working fluid more coordinated, and the thermal management distribution is more intelligent and efficient. The setting of the one-way valve 71 can prevent the working fluid of the second branch from flowing back through the first branch, making the flow of the working fluid in the second circuit more coordinated.

[0073] Optionally, it also includes a refrigeration module 8 and an intermediate heat exchanger 9. The refrigeration module 8 and the cooling module 1 exchange heat through the intermediate heat exchanger 9. The refrigeration module 8, the intermediate heat exchanger 9, and the cooling module 1 are connected by pipelines. The refrigeration module is mechanical refrigeration, which can ensure the thermal management of the first load 2. In this embodiment, the first load 2 is the main load and the second load 4 is the secondary load.

[0074] Optionally, at least one of the refrigeration module 8, the cooling module 1, and the second circuit is provided with a temperature sensor; the temperature sensor is used to collect the ambient temperature; in the present embodiment, the thermal management unit is provided with a plurality of temperature sensors, which can accurately detect the ambient temperature, and the temperature sensor can be provided in one of the refrigeration module 8, the cooling module 1, and the dry cooler module 6 of the second circuit, or in multiple locations; in other embodiments, the ambient temperature can be detected by other means.

[0075] Example 4

[0076] The difference from Example 3 is that, optionally, the refrigeration module 8 includes a first refrigeration module 81 and a second refrigeration module 82, the first refrigeration module 81 and the second refrigeration module 82 are arranged in parallel, the first refrigeration module 8 includes a condenser, a throttling element and a compressor, and the second refrigeration module 8 includes a condenser, a throttling element and a compressor; in this embodiment, the refrigeration module 8 has two refrigeration modules, the first refrigeration module 81 and the second refrigeration module 82 back up each other, which can improve the reliability and continuous stability of the refrigeration module 8 and ensure the normal operation of the first load 2.

[0077] Example 5

[0078] The present application discloses an energy storage center, including the thermal management unit of the above-mentioned embodiment 1, and also including

[0079] The working compartment is used to install the first load 2 and / or the second load 4, the first load 2 is an energy storage battery, and the second load 4 is a PCS module;

[0080] The refrigeration module 8 and the intermediate heat exchanger 9 of the thermal management unit are arranged outside the working chamber, and part of the first circuit of the cooling module 1 extends into the working chamber to perform thermal management on the first load 2.

[0081] Part of the second circuit extends into the working chamber to perform thermal management on the first load 2 and / or the second load 4.

[0082] The energy storage battery is thermally managed through mechanical refrigeration of the first circuit, and the PCS is cooled through the dry cooler module 6 of the second circuit. The first circuit and the second circuit are connected under preset conditions, and the dry cooler module 6 provides joint cooling for the energy storage battery and the PCS module. For example, in the north or in winter, it can ensure sufficient cooling of the PCS module and make full use of the ambient temperature difference to share or replace the work of mechanical refrigeration, with higher energy efficiency, lower cost and good economic value.

[0083] Example 6

[0084] The present application discloses an energy storage center, including the thermal management unit of the above-mentioned embodiment 3, and also including

[0085] The working compartment is used to install the first load 2 and / or the second load 4, the first load 2 is an energy storage battery, and the second load 4 is a PCS module;

[0086] The refrigeration module 8 and the intermediate heat exchanger 9 of the thermal management unit are arranged outside the working chamber, and part of the first circuit of the cooling module 1 extends into the working chamber to perform thermal management on the first load 2.

[0087] Part of the second circuit extends into the working chamber to perform thermal management on the first load 2 and / or the second load 4.

[0088] The energy storage battery is thermally managed through mechanical refrigeration of the first circuit, and the PCS is cooled through the dry cooler module 6 of the second circuit. The first circuit and the second circuit are connected under preset conditions, and the dry cooler module 6 provides joint cooling for the energy storage battery and the PCS module. For example, in the north or in winter, it can ensure sufficient cooling of the PCS module and make full use of the ambient temperature difference to share or replace the work of mechanical refrigeration, with higher energy efficiency, lower cost and good economic value.

[0089] Example 7

[0090] The present application also discloses a control method for a thermal management unit, comprising the following steps:

[0091] Sense the ambient temperature T and feed it back to the main control board;

[0092] The main control board judges the ambient temperature T and the preset temperature T0. When T≥T0, the first valve component 3 is controlled to operate in the first mode, the first circuit performs thermal management on the first load 2, and the second circuit performs thermal management on the second load 4; when T<T0, the first valve component 3 is controlled to operate in the second mode, the second circuit is connected to the first circuit, and the thermal management of the first load 2 and the second load 4 is performed; in this embodiment, two different refrigeration schemes are provided according to different ambient temperatures, and the preset temperature T0 is different according to the thermal management requirements of the first load 2. The ambient temperature T is sensed by the temperature sensor and judged by the main control board. In the first mode, the first circuit is only the first load 2, That is, the energy storage battery performs thermal management, and the second circuit is only for the second load 4, that is, the PCS module performs thermal management, and the two are carried out simultaneously without interfering with each other; in the second mode, through the switching of the first valve component 3, the first load 2 and the second load 4 are connected in series, and the dry cooler module 6 of the second circuit will perform thermal management of the first load 2 and the second load 4 at the same time. At this time, the refrigeration module 8 can operate at a low frequency or stop running. Through the flexible switching of the first valve component 3, the ambient temperature difference can be fully and flexibly utilized to perform thermal management for the first load 2 and the second load 4, ensuring that the PCS module can be fully cooled, and as a supplement or substitute for the first load 2, the economic benefit is higher.

[0093] The main control board determines the ambient temperature T and the preset temperature T0, specifically including the following steps: when T≥T0, the valve port A311 of the inlet valve 31 is connected to the valve port B312, and the valve port C313 is closed; the valve port D314 of the outlet valve 32 is connected to the valve port E315, and the valve port F316 is closed; when T<T0, the main control board controls the valve port A311 of the inlet valve 31 to be closed, the valve port C313 to be connected to the valve port B312; the valve port E315 of the outlet valve 32 is connected to the valve port F316, the valve port D314 is closed, and the refrigeration module 8 operates at low power or at least Partially closed; in the embodiment of this city, the inlet valve 31 and the outlet valve 32 are both electric valves, which are uniformly controlled by the main control board. When T≥T0, valve port A311 and valve port B312 are opened, valve port C313 is closed, valve port D314 and valve port E315 are opened, and valve port F316 is closed. The inlet valve 31 is connected to the second circuit through valve port A311 and valve port B312 to form a circulation loop of the second pump 5-dry cooler module 6-valve port A311-valve port B312-second load 4-second pump 5. The inlet valve 31 is arranged at the downstream section of the dry cooler module 6, and The outlet valve 32 is connected to the first loop through the valve port D314 and the valve port E315, forming a circulation loop of the first pump 11-valve port D314-valve port E315-intermediate heat exchanger 9-first load 2-first pump 11, the valve port C313 is connected between the outlet of the first pump 11 and the valve port D314, and the valve port F316 is connected between the outlet of the dry cooler module 6 and the valve port A311; when T<T0, the ambient temperature is low enough at this time, and at this ambient temperature, the dry cooler module 6 can provide the sum of the cooling capacity required by the first load 2 and the second load 4. At this time, valve port A311 is closed, valve port C313 is opened, valve port B312 is opened, and valve port F316 is opened, valve port D314 is closed, and valve port E315 is opened, forming a large circulation loop of second pump 5-dry cooler module 6-valve port F316-valve port E315-intermediate heat exchanger 9-first load 2-first pump 11-valve port C313-valve port B312-second load 4-second pump 5, and the refrigeration module 8 can operate at a low frequency or stop operating, making full use of the ambient temperature, which further improves the efficiency of PCS liquid cooling.

[0094] Example 8

[0095] The present application also discloses a control method for a thermal management unit, comprising the following steps:

[0096] Sense the ambient temperature T and feed it back to the main control board;

[0097] The main control board judges the ambient temperature T and the preset temperature T0. When T≥T0, the first valve component 3 is controlled to operate in the first mode, the first circuit performs thermal management on the first load 2, and the second circuit performs thermal management on the second load 4; when T<T0, the first valve component 3 is controlled to operate in the second mode, the second circuit is connected to the first circuit, and the thermal management of the first load 2 and the second load 4 is performed; in this embodiment, two different refrigeration schemes are provided according to different ambient temperatures, and the preset temperature T0 is different according to the thermal management requirements of the first load 2. The ambient temperature T is sensed by the temperature sensor and judged by the main control board. In the first mode, the first circuit is only the first load 2, That is, the energy storage battery performs thermal management, and the second circuit is only for the second load 4, that is, the PCS module performs thermal management, and the two are carried out simultaneously without interfering with each other; in the second mode, through the switching of the first valve component 3, the first load 2 and the second load 4 are connected in series, and the dry cooler module 6 of the second circuit will perform thermal management of the first load 2 and the second load 4 at the same time. At this time, the refrigeration module 8 can operate at a low frequency or stop running. Through the flexible switching of the first valve component 3, the ambient temperature difference can be fully and flexibly utilized to perform thermal management for the first load 2 and the second load 4, ensuring that the PCS module can be fully cooled, and as a supplement or substitute for the first load 2, the economic benefit is higher.

[0098] The main control board determines the ambient temperature T and the preset temperature T0, specifically including the following steps: when T≥T0, the valve port G317 of the first valve component 3 is connected to the valve port H318, and the valve port I319 is connected to the inlet J; when T<T0, the valve port G317 of the first valve component 3 is connected to the valve port J320, the valve port I319 is connected to the valve port H318, and the refrigeration module 8 operates at low power or is at least partially closed; when T≥T0, a four-way valve solution is adopted. In the first state, the first circuit forms a circulation circuit of the first pump 11-valve port G317-valve port H318-intermediate heat exchanger 9-first load 2-first pump 11, and the second circuit forms a circulation circuit of the second pump 5. The circulation loop of the dry cooler module 6-valve port I319-valve port J320-second load 4-second pump 5, in the first state, the first loop and the second loop are not connected, and circulate separately; when T<T0, it enters the second state, the valve port G317 is connected to the valve port J320, the valve port I319 is connected to the valve port H318, forming a large circulation loop of the second pump 5-dry cooler module 6-valve port I319-valve port H318-intermediate heat exchanger 9-first load 2-first pump 11-valve port G317-valve port J320-second load 4-second pump 5; the four-way valve solution system is simpler, the management system is more simplified, and the efficiency is higher.

[0099] Example 9

[0100] The present application also discloses a control device, including a processor and a memory, wherein the memory stores a computer program that can be executed by the processor, and when the computer program is executed by the processor, the control method of the thermal management unit in Example 7 or Example 8 described above is implemented.

[0101] Example 10

[0102] The present application also discloses a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a controller, the control method of the thermal management unit of the above-mentioned embodiment 7 or embodiment 8 is implemented.

[0103] The present invention arranges a dry cooler module 6 to perform thermal management for the first load 2 alone. When a predetermined condition is met, the dry cooler module 6 can be switched by the first valve member 3 to perform thermal management for the first load 2 and the second load 4 at the same time, thereby achieving good economy and high thermal management efficiency.

[0104] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A thermal management unit, characterized in that: include: First load; Second load; A cooling module (1), the cooling module (1) comprising a first circuit, the first circuit comprising a first pump (11), the first circuit being used for thermal management of the first load (2); A second circuit, wherein the second circuit can be connected to the first circuit via a first valve member (3), the second circuit is used for heat management of the first load (2) and / or the second load (4), and the second circuit comprises a second pump (5) and a dry cooler module (6).

2. A thermal management unit according to claim 1, characterized in that: The first valve component (3) comprises an inlet valve (31) and an outlet valve (32). The inlet valve (31) comprises a valve port A (311), a valve port B (312), and a valve port C (313). The valve port A (311) and the valve port B (312) are respectively connected to the second circuit. The valve port A (311) is connected to the outlet of the second pump (5). The valve port B (312) is connected to the inlet of the second pump (5). The valve port C (313) is connected to the outlet of the first pump (11). The outlet valve (32) comprises a valve port D (314), a valve port E (315), and a valve port F (316). The valve port D (314) and the valve port E (315) are respectively connected to the first circuit. The valve port D (314) is connected to the outlet of the first pump (11). The valve port E (315) is connected to the inlet of the first pump (11). The valve port F (316) is connected to the outlet of the second pump (5).

3. A thermal management unit according to claim 2, characterized in that: The first valve component (3) comprises a valve port G (317), a valve port H (318), a valve port I (319), and a valve port J (320). The valve port G (317) is connected to the outlet of the first pump (11), the valve port H (318) is connected to the inlet of the first pump (11), the valve port I (319) is connected to the outlet of the second pump (5), and the valve port J (320) is connected to the inlet of the second pump (5). The first valve component (3) has at least a first state and a second state. In the first state, the valve port H (318) is connected to the valve port G (317), and the valve port J (320) is connected to the valve port I (319); in the second state, the valve port H (318) is connected to the valve port I (319), and the valve port J (320) is connected to the valve port G (317).

4. A thermal management unit according to claim 2, characterized in that: The second circuit comprises a first branch and a second branch connected in parallel, the first branch is used to set a second load (4) and is provided with a second pump (5), the second branch is provided with a second valve component (7), the second valve component (7) comprises a one-way valve (71), the one-way valve (71) comprises a valve port L (711) and a valve port M (712), the valve port L (711) is connected to the valve port B (312), and the valve port M (712) is connected to the valve port A (311) or the valve port F (316).

5. A thermal management unit according to claim 3, characterized in that: The second circuit comprises a first branch and a second branch connected in parallel, the first branch is used to set a second load (4) and is provided with a second pump (5), the second branch is provided with a second valve component (7), the second valve component (7) comprises a one-way valve, the one-way valve comprises a valve port L (711) and a valve port M (712), the one-way valve flows in from the valve port L (711) and flows out from the valve port M (712), the valve port L (711) is connected to the valve port J (320), and the valve port M (712) is connected to the valve port I (319).

6. A thermal management unit according to claim 4 or 5, characterized in that: It also includes a refrigeration module (8) and an intermediate heat exchanger (9), wherein the refrigeration module (8) and the cooling module (1) exchange heat via the intermediate heat exchanger (9), and the refrigeration module (8), the intermediate heat exchanger (9) and the cooling module (1) are connected via pipelines.

7. A thermal management unit according to claim 6, characterized in that: The refrigeration module (8) comprises a first refrigeration module (81) and a second refrigeration module (82); the first refrigeration module (81) and the second refrigeration module (82) are arranged in parallel; the first refrigeration module (81) comprises a condenser, a throttling element and a compressor; the second refrigeration module (82) comprises a condenser, a throttling element and a compressor.

8. The thermal management unit according to claim 1, characterized in that: At least one of the refrigeration module (8), the cooling module (1), and the second circuit is provided with a temperature sensor; the temperature sensor is used to collect the ambient temperature.

9. An energy storage center, comprising the thermal management unit according to claims 1-8, characterized in that: Also includes: A working compartment, used for installing a first load (2) and / or a second load (4), wherein the first load (2) is an energy storage battery, and the second load (4) is a PCS module; The refrigeration module (8) and the intermediate heat exchanger (9) of the thermal management unit are arranged outside the working chamber, and part of the first circuit of the cooling module (1) is arranged to extend into the working chamber for performing thermal management on the first load (2). Part of the second circuit is configured to extend into the working chamber for performing thermal management work on the first load (2) and / or the second load (4).

10. A control method for a thermal management unit, characterized in that: The following steps are involved: Sense the ambient temperature T and feed it back to the main control board; The ambient temperature T and the preset temperature T0 are judged. When T≥T0, the first valve component (3) is controlled to operate in a first mode, the first circuit performs thermal management on the first load (2), and the second circuit performs thermal management on the second load (4); when T<T0, the first valve component (3) is controlled to operate in a second mode, the second circuit is connected to the first circuit, and thermal management of the first load (2) and the second load (4) is performed.

11. A control method for a thermal management unit according to claim 10, characterized in that: The determination of the ambient temperature T and the preset temperature T0 specifically includes the following steps: when T≥T0, the valve port A (311) of the inlet valve (31) is connected to the valve port B (312), and the valve port C (313) is closed; the valve port D (314) of the outlet valve (32) is connected to the valve port E (315), and the valve port F (316) is closed; when T<T0, the main control board controls the valve port A (311) of the inlet valve (31) to be closed, and the valve port C (313) to be connected to the valve port B (312); the valve port E (315) of the outlet valve (32) is connected to the valve port F (316), and the valve port D (314) is closed, and the refrigeration module (8) operates at low power or is at least partially closed.

12. The control method of a thermal management unit according to claim 10, characterized in that: The determination of the ambient temperature T and the preset temperature T0 specifically comprises the following steps: when T≥T0, the valve port G (317) of the first valve component (3) is connected to the valve port H (318), and the valve port I (319) is connected to the inlet J; when T<T0, the valve port G (317) of the first valve component (3) is connected to the valve port J (320), and the valve port I (319) is connected to the valve port H (318), and the refrigeration module (8) operates at low power or is at least partially shut down.

13. A control device, characterized in that: It comprises a processor and a memory, wherein the memory stores a computer program executable by the processor, and when the computer program is executed by the processor, the control method of the thermal management unit as claimed in any one of claims 10 to 12 is implemented.

14. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by the controller, the control method of the thermal management unit according to any one of claims 10 to 12 is implemented.

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