Temperature control system, vehicle provided with the temperature control system, and method for controlling operation of the temperature control system

Abstract

A temperature control system for a vehicle, comprising a main circuit (1), the main circuit comprising: a pipeline (2), in which a coolant is arranged; a main circuit pump (3), the main circuit pump being configured to pump the coolant through the pipeline (2) of the main circuit (1) in a first direction. A first sub-circuit and a second sub-circuit are connected in parallel to the main circuit for cooling or heating components connected thereto. In the sub-circuit (7, 12), a first and a second pump (17, 18) are arranged, the first and the second pumps pumping the coolant from a first end (10, 15) to a second end (11, 16) through the sub-circuit, at the first end and the second end, the respective sub-circuit (7, 12) being connected to the main circuit (1). The first end (10, 15) is upstream of the second end (11, 16) as seen in the first direction in the first circuit (1), and the first end (10) of the first sub-circuit (7) and the first end (15) of at least one second sub-circuit (12) are joined to a common pipe section (27), which in turn is connected to the pipe (2) of the main circuit (1).

Description

Technical Field

[0001] The present invention relates to a temperature control system for a vehicle, comprising:

[0002] a primary circuit, the primary circuit comprising: a pipeline provided with a coolant; a primary circuit pump, the primary circuit pump being configured to pump the coolant through the pipeline of the primary circuit in a first direction; and at least one unit for cooling or heating the coolant in the primary circuit,

[0003] a first sub-circuit for cooling or heating a first component, the first sub-circuit comprising a pipe having a first end and a second end, the first end and the second end being connected to respective openings in the pipe of the main circuit at positions spaced apart from each other as seen in the longitudinal direction of the pipe of the main circuit, wherein the first end is connected to the pipe of the main circuit at a position upstream of the position at which the second end is connected to the pipe of the main circuit as seen in the first direction, and

[0004] at least one second sub-circuit for cooling or heating a second component, the second sub-circuit comprising a pipe having a first end and a second end, the first end and the second end being connected to respective openings in the pipe of the main circuit at positions spaced apart from each other as seen in the longitudinal direction of the pipe of the main circuit, wherein the first end is connected to the pipe of the main circuit at a position upstream of the position at which the second end is connected to the pipe of the main circuit as seen in the first direction, wherein

[0005] - the first sub-circuit comprises a first pump configured to pump coolant in a direction from the first end of the line of the first sub-circuit to the second end thereof, and

[0006] - said second sub-circuit comprises a second pump configured to pump coolant in a direction from said first end of the pipes of said second sub-circuit to a second end thereof.

[0007] The invention also relates to a vehicle provided with a temperature control system as defined in this application.

[0008] The invention also relates to a method of controlling the operation of a temperature control system according to the invention.

[0009] The term "pipe" as used in the present disclosure should be considered in a broad sense and may include all types of structural elements that define a passage through which a coolant can flow. A pipe as used in the present disclosure may also include a plurality of structural elements that together define a pipe, the structural elements not necessarily having the traditional geometric tubular shape of a pipe. Background Art

[0010] When designing any coolant system involving multiple components, it is always difficult to ensure that all components have adequate flow and coolant temperature. Connecting these components in series allows the same coolant to flow to all components. However, as the coolant warms from each component, it will cool the subsequent components less and less. If, as an alternative, the components are connected in parallel flow, the coolant temperature will be the same. However, the flow rate depends on the pressure drop across the components and the length and diameter of the hoses / pipes. Therefore, the goal is to find a device that provides the required coolant flow rate and coolant temperature to all components, with the temperature of all components controlled by heat exchange with the coolant.

[0011] In modern coolant systems for vehicles, most coolant systems utilize a single pump and try to balance the characteristics of all components until a device is found that works and requires as little over-dimensioning of the pump as possible. Using a larger pump to increase the coolant flow rate or using a larger radiator for more powerful coolant cooling is always a solution, but it will also incur additional cost and additional space.

[0012] For a battery arrangement that is provided in a vehicle, for example as a power source for the vehicle, it is important to ensure equal cooling of all batteries. To this end, the batteries may require the same coolant temperature and the same coolant flow rate. This can be solved by placing the batteries close to each other, sizing the coolant pump for a given number of batteries and arranging the pipes in parallel loops. However, this requires the batteries to be close to each other and whenever another battery is added to the arrangement, the existing pump will need to be replaced with a more powerful pump if it is not sized for redundancy. Therefore, the solutions of the prior art are not easily adaptable to changing the arrangement of components that need to be cooled or heated by the coolant in the temperature control system.

[0013] Sometimes, it may be necessary to deliver different degrees of cooling to different components in a temperature cooling system. In a system with a single pump and multiple parallel cooling circuits (coolant is pumped therein by the pump), such differential cooling is solved by flow regulating valves set in the corresponding circuits. Summary of the invention

[0014] The object of the present invention is to propose a temperature control system which reduces the above mentioned drawbacks of the prior art and proposes an alternative solution to the existing solutions.The temperature control system should be designed so as to be able to deliver coolant of substantially the same temperature to the components of the respective sub-circuits.

[0015] The objects of the invention are achieved by a temperature control system as defined above and in the preamble of claim 1, characterized in that the first end of the first sub-circuit and the first end of the at least one second sub-circuit are joined to a common pipe section which in turn is connected to the pipes of the main circuit.

[0016] For each added component to be cooled, another sub-circuit as defined above can be added. In order to adapt the system to the addition of such components, it may not be necessary to replace the pump of the main circuit. By controlling the corresponding pumps of the sub-circuits separately, different coolant flow rates of different sub-circuits can be easily achieved. In those operating states where the sum of the coolant pumped by the pumps of the sub-circuits, i.e., the output, is greater than the amount of coolant pumped by the main circuit pump, there will be a return flow of coolant in the section of the main circuit between the inlet of the sub-circuit defined by the common pipeline section and the outlet of the sub-circuit. As long as there is a coolant flow from the main circuit pump, the coolant from the main circuit pump will mix with the coolant of the return flow in the common pipeline section, and the temperature of the coolant delivered to different sub-circuits from the common pipeline section will be substantially the same. On the other hand, the individual connection points of each inlet of the sub-circuit to the pipeline of the main circuit will cause the temperature of the coolant delivered to different sub-circuits to be different.

[0017] The term "upstream" is used to define the position of one component relative to another component along the pipeline of the main circuit. The outlet of the main circuit pump is used as the reference position in this article. Therefore, a first component upstream of a second component means in this article that the first component is arranged closer to the outlet of the main circuit pump than the second component from a connection perspective.

[0018] According to one embodiment, the common line section has a length sufficient to mix in the common line the coolant flow delivered by the main circuit pump and the coolant flows delivered by the first pump of the first sub-circuit and by the second pump of the at least one second sub-circuit, so that at the end of the common line where the first sub-circuit and the second sub-circuit are separated from each other, the temperature of the coolant is uniform.

[0019] According to one embodiment, the temperature control system comprises a control unit, wherein at least in one operating mode, the control unit is configured to control the outputs measured in volume / time units of the main circuit pump, the first pump of the first sub-circuit and the second pump of the at least one second sub-circuit, so that the sum of the output of the first pump of the first sub-circuit and the output of the second pump of the at least one second sub-circuit exceeds the output of the main circuit pump. Thus, a return flow of the coolant in the above-mentioned section of the main circuit is achieved.

[0020] According to one embodiment, the temperature control system comprises:

[0021] a first sensor configured to measure a parameter reflecting the temperature t1 of the first component,

[0022] a second sensor configured to measure a parameter reflective of the temperature t2 of the second component, and

[0023] a control unit connected to the first sensor and the second sensor and configured to control the operation of the first pump based on input received from the first sensor and to control the operation of the second pump based on input received from the second sensor. The parameter reflecting the temperature may be the temperature itself (direct measurement) or any other parameter, such as a characteristic of a component reflecting the temperature of the component, such as the current flowing through the component (indirect measurement). The control unit may be configured to make a temperature prediction based on repeated measurements made by each sensor and thus control the respective pump based not only on the instantaneous temperature indication but also on the temperature variation trend.

[0024] According to one embodiment, the control unit is connected to the pump of the main circuit and to at least one unit for cooling or heating the coolant in the main circuit and is configured to control the operation of the pump of the main circuit and the unit for cooling or heating the coolant in the main circuit based on input received from the first sensor and the second sensor.

[0025] According to one embodiment, the control unit is configured to activate the pump of the main circuit and / or the unit for cooling or heating the coolant in the main circuit in response to an input received from the first sensor or the second sensor or from a sensor measuring the temperature of the coolant in the first and second sub-circuit, the input indicating that sufficient heating or cooling of the first component or the second component is not achieved by controlling the first and second pumps.

[0026] According to one embodiment, the pump of the primary circuit has a maximum output measured in litres per minute which is lower than the sum of the maximum outputs of the first pump and the second pump.

[0027] According to one embodiment, the portion of the conduit of the main circuit presenting openings to which the first and second ends of the first and second sub-circuits are connected can be separated from an upstream portion of the conduit and a downstream portion of the conduit by a conduit connection, via which the portion is connected to the upstream portion and the downstream portion, respectively. Thus, the portion can be provided as an additional component, which can be added to an existing system, which can then be provided with a sub-circuit according to the teaching of the present invention. Depending on the number of components to be cooled or heated by the temperature control system, different such additional portions provided with different numbers of openings can be provided.

[0028] According to one embodiment, the first component and the second component are components of a vehicle.

[0029] According to one embodiment, at least one of the first component and the second component is a battery for accumulating electrical energy.

[0030] According to one embodiment, the first component has a preferred operating temperature range a-b, and the second component has a preferred operating temperature range c-d, and a-b overlaps with c-d.

[0031] The present invention also relates to a vehicle, which includes a first component having a preferred operating temperature range a-b and at least one second component having a preferred operating temperature range c-d. The vehicle is characterized in that it includes the temperature control system according to the present invention, wherein the first component is arranged to be connected to the first sub-circuit and is configured to be heated or cooled by heat exchange with the coolant flowing through the first sub-circuit, and wherein the second component is arranged to be connected to the second sub-circuit and is configured to be heated or cooled by heat exchange with the coolant flowing through the second sub-circuit.

[0032] According to one embodiment, the first component and the second component are any one of the following

[0033] - a battery for accumulating electrical energy,

[0034] - a compressor,

[0035] - an electric heater device,

[0036] - a condenser,

[0037] - power electronics.

[0038] According to one embodiment, at least one of the first and second components is a battery for accumulating electrical energy.

[0039] The present invention also relates to a method for controlling the operation of the temperature control system as defined above or below. The method includes the following steps:

[0040] - measuring a parameter reflecting the temperature t1 of the first component,

[0041] - comparing the measured parameter with the preferred operating temperature range a-b of the first component,

[0042] - controlling the output of the first pump based on the comparison such that a < t1 < b,

[0043] - measuring a parameter reflecting the temperature t2 of the second component,

[0044] - comparing the measured parameter with the preferred operating temperature range c-d of the second component,

[0045] - controlling the output of the second pump based on the comparison such that c < t2 < d, and

[0046] Repeat the steps continuously.

[0047] The method is preferably implemented by using a control unit provided with a computer program, the computer program including computer program code that causes a computer to implement the method disclosed above or below. The control unit preferably defines a computer program product including a storage medium that can be read by a computer and on which the program code is stored.

[0048] According to one embodiment, the method further comprises the following steps.

[0049] - If neither of the conditions a < t1 < b or c < t2 < d is achieved by controlling the output of the first pump or the second pump, in addition to controlling the output of the first pump and the second pump, also control the operation of the pump in the main circuit and the operation of the unit for cooling or heating the coolant in the main circuit so that a < t1 < b and c < t2 < d.

[0050] Other features and advantages of the present invention are presented in the following detailed description of the embodiments. Description of the Drawings

[0051] Embodiments of the present invention will now be described in more detail by way of example with reference to the accompanying drawings, in which:

[0052] Figure 1 is a schematic diagram of a temperature control system according to the present invention,

[0053] Figure 2 is a schematic diagram of an alternative embodiment, and

[0054] Figure 3 is a flowchart showing the basic steps of an embodiment of the method according to the present invention. Detailed Description of the Embodiments

[0055] Figure 1 is a schematic diagram of a temperature control system according to the present invention. Preferably, the temperature control system is arranged in a vehicle, such as a bus or a truck, for the purpose of heating or cooling components, including a large amount of gas and / or a large amount of liquid. According to one embodiment, the temperature control system is configured to cool a plurality of batteries, the plurality of batteries being configured to be used as electrical energy storage batteries and serving as an energy storage device for feeding one or more electric motors / engines configured for propelling the vehicle.

[0056] The temperature control system includes a main circuit 1, which includes a pipeline 2 in which a coolant is provided. The system further includes a main circuit pump 3, which is configured to Figure 1The temperature control system further comprises at least one unit 4, 5, 6 for cooling or heating the coolant in the main circuit 1. The units 4, 5, 6 may comprise a fan-cooled radiator 4, a heater 5 and / or a cooler 6. The cooler 6 may comprise an evaporator, via which the coolant exchanges heat with a refrigerant of a cooling system, the cooling system being provided with a compressor, a condenser and the evaporator. In the illustrated embodiment, the radiator 4 is connected in parallel with the heater 5 and the cooler 6. A pilot valve 26 is provided for controlling the coolant flow to the radiator 4 and the heater 5 and the cooler 6. Of course, other arrangements and arrangements may be envisaged. For example, the unit for heating or cooling may comprise at least one additional circuit, from which a coolant of a predetermined temperature is introduced into the main circuit. Therefore, by definition, such additional circuits become part of the main circuit disclosed in the present application.

[0057] In addition to the main circuit 1, the temperature control system also comprises a first sub-circuit 7 for cooling or heating a first component 8, the first sub-circuit comprising a pipe 9 having a first end 10 and a second end 11, the first end and the second end being connected to respective openings in the pipe 2 of the main circuit at positions spaced apart from each other as seen in the longitudinal direction of the pipe of the main circuit. The first end 10 is connected to the pipe 2 of the main circuit 1 at a position upstream of the position where the second end 11 is connected to the pipe 2 of the main circuit 1 as seen in the first direction.

[0058] The temperature control system further comprises a second sub-circuit 12 for cooling or heating a second component 13, the second sub-circuit 12 comprising a pipe 14 having a first end 15 and a second end 16, the first end and the second end being connected to respective openings in the pipe 2 of the main circuit 1 at positions spaced apart from each other as seen in the longitudinal direction of the pipe of the main circuit 1. The first end 15 is connected to the pipe 2 of the main circuit 1 at a position upstream of the position where the second end 16 is connected to the pipe 2 of the main circuit 1 as seen in the first direction.

[0059] According to one embodiment, the first component 8 has a preferred operating temperature range ab and the second component 13 has a preferred operating temperature range cd, wherein ab overlaps cd.

[0060] A sensor 25 is also provided for sensing the temperature of the coolant in the section of the main circuit between the common line section 27 and the second end 11 of the first sub-circuit 7 and the second end 16 of the second sub-circuit 12. Alternatively, the sensor 25 is supplemented or replaced by a corresponding sensor arranged for measuring the coolant temperature in the common line section 27 or in the first sub-circuit 7 and the second sub-circuit 12 downstream of the first end 10 of the first sub-circuit 7 and the second end 15 of the second sub-circuit 13 but upstream of the first component 8 and the second component 13 as seen in the flow direction generated in the first sub-circuit 7 and the second sub-circuit 12.

[0061] In addition to the above features, the first sub-circuit 7 comprises a first pump 17 configured to pump coolant in a direction from said first end 10 of the line 9 of the first sub-circuit 7 to a second end 11 of the first sub-circuit 7 .

[0062] The second sub-circuit 12 comprises a second pump 18 configured to pump coolant in a direction from said first end 15 of the line 14 of the second sub-circuit 12 to a second end 16 of the second sub-circuit 12 .

[0063] The first end 10 of the first sub-circuit 7 and the first end 15 of the second sub-circuit 12 are joined to a common line section 27 which in turn is connected to the line 2 of the main circuit 1 .

[0064] The common pipe section 27 has a length sufficient to mix the coolant flow delivered by the main circuit pump 3 and the coolant flow delivered by the first pump 17 of the first sub-circuit 7 and by the second pump 18 of the second sub-circuit 12 in the common pipe section 27, so that the temperature of the coolant is uniform at the end of the common pipe section 27 where the first sub-circuit 7 and the second sub-circuit 12 are separated from each other, that is, equal over the cross section of the common pipe section 27.

[0065] The temperature control system further comprises a control unit 21. In at least one operation mode, the control unit 21 is configured to control the outputs measured in volume / time units of the main circuit pump 3, the first pump 17 of the first sub-circuit 7 and the second pump 18 of the second sub-circuit 12 so that the sum of the output of the first pump 17 of the first sub-circuit 7 and the output of the second pump 18 of the second sub-circuit 12 exceeds the output of the main circuit pump 3.

[0066] exist Figure 2 In the alternative embodiment shown, the second end 11 of the first sub-circuit 7 and the second end 16 of the second sub-circuit 12 are joined to a second common line section 28 which in turn is connected to the line 2 of the main circuit 1 .

[0067] The temperature control system further includes a first sensor 19 configured to measure a parameter reflecting the temperature t1 of the first component 8 and a second sensor 20 configured to measure a parameter reflecting the temperature t2 of the second component 13. A control unit 21 is connected to the first sensor 19 and the second sensor 20 and is configured to control the operation of the first pump 17 based on an input received from the first sensor 19 and to control the operation of the second pump 18 based on an input received from the second sensor 20.

[0068] The control unit 21 is connected to the pump 3 of the main circuit 1 and to at least one unit 4, 5, 6 for cooling or heating the coolant in the main circuit 1, and is configured to control the operation of the pump 3 of the main circuit 1 and the units 4, 5, 6 for cooling or heating the coolant in the main circuit 1 based on inputs received from the first sensor 19 and the second sensor 20. The control unit 21 is also connected to the pilot valve 26 and is configured to control the pilot valve.

[0069] The control unit 21 is configured to activate the pump 3 of the main circuit 1 and / or the units 4, 5, 6 for cooling or heating the coolant in the main circuit 1 in response to an input received from the first sensor 19 or the second sensor 20, which indicates that sufficient heating or cooling of the first component 8 or the second component 13 cannot be achieved by controlling the first pump 17 and the second pump 18.

[0070] The pipeline 2 of the main circuit 1 presents the first and second ends 10, 11, 15, 16 of the first and second sub-circuits 8, 12 via the first end 10, 15 ( Figure 1 and Figure 2 ) of the common pipeline section 27 and the second end 11, 16 ( Figure 2 The portion 22 of the openings to which the common line section 28 of the pipe 2 is connected can be separated from the upstream portion of the pipe and the downstream portion of the pipe 2 by line connections 23, 24, via which the portions are connected to the upstream portion and the downstream portion, respectively. Thus, the portion 22 carrying the openings forms an easily replaceable unit which can be replaced as required by another 16 corresponding unit with another opening arrangement.

[0071] According to some embodiments, the pipe connections 23, 24 may include one or more of threaded connections, O-rings, washers, snap-fit ​​devices, etc. In addition, according to some embodiments, the pipe connections 23, 24 may be soldered, welded, glued, attached via vibration welding of plastic, etc. The distance between the pump 3 of the main circuit 1 and the pipe connection 23 may be large or may be short. According to some embodiments, the pipe connection 23 may be directly attached to the outlet conduit of the pump 3 of the main circuit 1.

[0072] Figure 3A flowchart showing the steps of the method according to the present invention is presented. The method includes the following steps:

[0073] Measure the temperature t of the coolant downstream of the second ends 11 of the first sub-loop 7 and 16 of the second sub-loop 12 as seen in the first direction by measuring in the mixing zone and / or by individual measurements of the coolant temperature in the first sub-loop 7 and the second sub-loop 12 downstream of the first ends 10 of the first sub-loop 7 and 15 of the second sub-loop 12, but upstream of the first component 8 and the second component 13, block S1.

[0074] Compare the measured coolant temperature t with the preferred operating temperature range a-b of the first component 8 and with the preferred operating temperature range c-d of the second component 13, block S2.

[0075] If the measured coolant temperature t is outside the ranges a-b and / or c-d, the operation of the pump 3 of the main loop 1 and the units 4, 5, 6 for cooling or heating the coolant in the main loop 1 should be controlled such that the measured coolant temperature t becomes within the ranges a-b and c-d, block S3.

[0076] Measure a first parameter reflecting the temperature t1 of the first component 8 in the first sub-loop, and measure a second parameter reflecting the temperature t2 of the second component 13 in the second sub-loop, block S4.

[0077] Compare the temperature t1 reflected by the first measurement parameter with the preferred operating temperature range a-b of the first component 8 to determine whether a < t1 < b, and compare the temperature t2 reflected by the second measurement parameter with the preferred operating temperature range c-d of the second component 13 to determine whether c < t2 < d, block S5.

[0078] If a < t1 < b is not satisfied, control the output of the first pump 17 of the first sub-loop 7 based on the comparison to obtain a < t1 < b, and if c < t2 < d, control the output of the second pump 18 based on the comparison such that c < t2 < d, block S6.

[0079] These steps are preferably performed by the interaction of the control unit 21 with the first sensor 19, the second sensor 20, the sensor 25 for measuring the coolant temperature, the pump 3 in the main loop 1, the units 4, 5, 6 for cooling or heating the coolant in the main loop 1, and the first pump 17 and the second pump 18.

[0080] It should be noted that if the temperature t of the coolant is not within the range ab and cd, then this will be interpreted by the control unit 21 as indicating that sufficient heating or cooling of the first component 8 or the second component 13 is not achieved by controlling the first pump 17 and the second pump 18 alone, but it is necessary to increase the functions of the pump 3 in the main circuit 1 and the units 4, 5, 6 for cooling or heating the coolant in the main circuit 1.

[0081] Although the invention has been illustrated by showing only an embodiment in which only two sub-circuits are present, it is to be understood that the intended scope of protection also includes solutions in which there are many such sub-circuits and the temperature of a plurality of components, including a battery, is controlled by means of these sub-circuits. Controlling the temperature of a component also includes controlling the temperature of a bulk gas or liquid, preferably by controlling the temperature of a component, which in turn affects the temperature of the bulk gas or liquid.

[0082] It should be added that, of course, the scope of protection also covers designs in which there are additional components / parts in each corresponding loop. Such components / parts can be arranged in series or in parallel with the components / parts already disclosed in the present disclosure.

Claims

1. A temperature control system for a vehicle, comprising: - a main circuit (1), said main circuit comprising: A pipeline (2), in which a coolant is arranged; a main circuit pump (3) configured to pump the coolant in a first direction through the pipe (2) of the main circuit (1); and at least one unit (4, 5, 6) for cooling or heating the coolant in the main circuit (1), - a first sub-circuit (7) for cooling or heating a first component (8), the first sub-circuit (7) comprising a pipe (9) having a first end (10) and a second end (11), the first end and the second end being connected to respective openings in the pipe (2) of the main circuit (1) at positions spaced apart from one another, wherein the first end (10) is connected to the pipe (2) of the main circuit (1) at a position upstream of the position at which the second end (11) is connected to the pipe (2) of the main circuit (1), as seen in the first direction, and at least one second sub-circuit (12) for cooling or heating a second component (13), the second sub-circuit (12) comprising a pipe (14) having a first end (15) and a second end (16), the first end and the second end being connected to respective openings in the pipe (2) of the main circuit (1) at positions spaced apart from one another, wherein the first end (15) is connected to the pipe (2) of the main circuit (1) at a position upstream of the position at which the second end (16) is connected to the pipe (2) of the main circuit (1), as seen in the first direction, -in - the first sub-circuit (7) comprises a first pump (17) configured to pump coolant in a direction from the first end (10) of the pipe (9) of the first sub-circuit (7) to its second end (11), and The second sub-circuit (12) comprises a second pump (18) which is configured to pump coolant in a direction from the first end (15) of the line (14) of the second sub-circuit (12) to its second end (16), wherein the first end (10) of the first sub-circuit (7) and the first end (15) of the at least one second sub-circuit (12) are joined to a common line section (27), which in turn is connected to the line (2) of the main circuit (1), Wherein, the temperature control system further comprises: a first sensor (19) configured to measure a parameter reflecting the temperature t1 of the first component (8), a second sensor (20) configured to measure a parameter reflecting the temperature t2 of the second component (13), and a control unit (21) connected to the first sensor (19) and the second sensor (20) and configured to control the operation of the first pump (17) based on input received from the first sensor (19) and to control the operation of the second pump (18) based on input received from the second sensor (20), - and wherein the control unit (21) is connected to the pump (3) of the main circuit (1) and to the at least one unit (4, 5, 6) for cooling or heating the coolant in the main circuit (1), and is configured to control the operation of the pump (3) of the main circuit (1) and the unit (4, 5, 6) for cooling or heating the coolant in the main circuit (1) based on inputs received from the first sensor (19) and the second sensor (20), - and wherein, at least in one operating mode, the control unit (21) is configured to control the outputs measured in volume / time units of the main circuit pump (3), the first pump (17) of the first sub-circuit (7) and the second pump (18) of the at least one second sub-circuit (12) so that the sum of the outputs of the first pump (17) of the first sub-circuit (7) and the second pump (18) of the at least one second sub-circuit (12) exceeds the output of the main circuit pump (3).

2. The temperature control system according to claim 1, characterized in that: The common line section (27) has a length sufficient to mix the coolant flow delivered by the main circuit pump (3) and the coolant flow delivered by the first pump (17) of the first sub-circuit (7) and by the second pump (18) of the at least one second sub-circuit (12) in the common line section (27), so that the temperature of the coolant is uniform at the end of the common line section (27) where the first sub-circuit and the second sub-circuit (7, 12) are separated from each other.

3. The temperature control system according to any one of claims 1 to 2, characterized in that: The control unit (21) is configured to activate the pump (3) of the main circuit (1) and / or the unit (4, 5, 6) for cooling or heating the coolant in the main circuit (1) in response to an input received from the first sensor or the second sensor (19, 20) or from a sensor (25) measuring the temperature of the coolant in the first sub-circuit (7) and the second sub-circuit (12), the input indicating that sufficient heating or cooling of the first component (8) or the second component (13) is not achieved by controlling the first and second pumps (17, 18).

4. The temperature control system according to any one of claims 1 to 3, characterized in that: The pump (3) of the main circuit (1) has a maximum output, measured in litres per minute, which is lower than the sum of the maximum outputs of the first pump and the second pump (17, 18).

5. The temperature control system according to any one of claims 1 to 4, characterized in that: The portion (22) of the pipeline (2) of the main circuit (1) presenting the first ends and second ends (10, 11, 15, 16) of the first sub-circuit and the second sub-circuit (7, 12) connected thereto can be separated from the upstream portion and the downstream portion of the pipeline (2) through pipeline connections (23, 24), and the portion is respectively connected to the upstream portion and the downstream portion via the pipeline connections.

6. The temperature control system according to any one of claims 1 to 5, characterized in that: The first component (8) and the second component (13) are components of a vehicle.

7. The temperature control system according to claim 6, characterized in that: At least one of the first component (8) and the second component (13) is a battery for accumulating electrical energy.

8. The temperature control system according to any one of claims 1 to 7, characterized in that: The first component (8) has an operating temperature range a - b, and the second component (13) has an operating temperature range c - d, and a - b overlaps with c - d.

9. A vehicle, the vehicle includes a first component (8) having an operating temperature range a - b and at least one second component (13) having an operating temperature range c - d, characterized in that it includes a temperature control system according to any one of claims 1 - 8, wherein the first component (8) is arranged to be connected to the first sub-circuit (7) and is configured to be heated or cooled by heat exchange with the coolant flowing through the first sub-circuit (7), and wherein the second component (13) is arranged to be connected to the second sub-circuit (12) and is configured to be heated or cooled by heat exchange with the coolant flowing through the second sub-circuit (12).

10. The vehicle according to claim 9, characterized in that The first component (8) and the second component (13) are any one of the following - A battery for accumulating electrical energy, - A compressor, - An electric heater device, - A condenser, - Power electronics.

11. The vehicle according to claim 10, characterized in that At least one of the first component and the second component (8, 13) is a battery for accumulating electrical energy.

12. A method for controlling the operation of a temperature control system according to any one of claims 1 - 8, the method includes the following steps: - Measuring a parameter reflecting the temperature t1 of the first component (8), - Comparing the measured parameter with the operating temperature range a - b of the first component (8), - Controlling the output of the first pump (17) based on the comparison such that a < t1 < b, - Measuring a parameter reflecting the temperature t2 of the second component (13), - Comparing the measured parameter with the operating temperature range c - d of the second component (13), - Controlling the output of the second pump (18) based on the comparison such that c < t2 < d, and continuously repeating the steps, wherein the method further includes the following steps: - If either of the conditions a < t1 < b or c < t2 < d is not achieved by controlling the output of the first pump (17) or the second pump (18), then in addition to controlling the output of the first pump and the second pump, also control the operation of the pump of the main circuit (1) and the operation of the unit for cooling or heating the coolant in the main circuit (1) such that a < t1 < b and c < t2 < d.

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