Control device, method, battery and vehicle of a dynamic flow rate uniform liquid cooling plate

Abstract

The present invention relates to the technical field of automobiles, and specifically relates to a control device, method, battery and vehicle for a dynamic flow-uniform liquid cooling plate. It includes a balance controller, a battery liquid cooling plate, a sensor and a battery management system; the battery liquid cooling plate includes an integrally cast upper plate of the battery liquid cooling plate and a lower plate of the battery liquid cooling plate; the balance controller is fixed on the upper plate of the battery liquid cooling plate; the sensor is fixed at the position of the total inlet and outlet flow ports of the battery liquid cooling plate to collect the coolant pressure and coolant temperature; the battery management system is connected to the balance controller and collects the signals of the sensor. The present invention can achieve uniform control of the internal flow of the battery liquid cooling plate, balance the pressure impact of the internal coolant on the liquid cooling plate, and improve the thermal management performance and service life of the battery liquid cooling plate.

Description

Technical Field

[0001] The present invention relates to the technical field of automobiles, and specifically to a control device, method, battery and vehicle for a dynamic flow-uniform liquid cooling plate. Background Art

[0002] As a key core component of new energy vehicles, the importance of the thermal management system of power batteries is self-evident. The current mainstream battery thermal management system is a battery liquid cooling plate, which has a relatively complex structure and has two major problems: 1. The liquid cooling plate has many flow channels, and the flow of the coolant is complex, making it impossible to achieve uniform flow of the coolant, which easily causes poor consistency in the thermal performance of the battery; 2. The liquid cooling plate is filled with coolant inside, which is prone to liquid impact.

[0003] There is a current power battery thermal management system and a power battery thermal management control method. The system includes an expansion tank, an electric water pump, a power battery, a cooling module, a first solenoid valve, a second solenoid valve, a heat exchanger integrated with an expansion valve, a third solenoid valve, an air-conditioning compressor, and a condensation and fuel heater assembly and a fourth solenoid valve. The control method, using the above system, includes the following steps: obtaining the coolant temperature Tb at the inlet of the power battery; if the coolant temperature Tb at the inlet of the power battery is greater than the lower limit temperature Tb0 at the inlet of the power battery, selectively opening the first circulation path or the second circulation path. This thermal management system ensures that the battery operates at an appropriate temperature, and the cooling module, the heat exchanger integrated with the expansion valve, and the fuel heater assembly can be flexibly arranged according to the situation, without being restricted by the vehicle space, with flexible vehicle layout and high space utilization rate.

[0004] A battery thermal management control method, device, medium and equipment. The method includes: predicting the temperature of the battery during the target trip according to the road conditions of the target trip, or predicting the temperature of the battery during the target charging process according to the magnitude of the charging current during the target charging process; controlling the heating or cooling of the battery according to the predicted temperature. That is, predicting the change in the battery temperature during the future charge / discharge process according to the usage of the battery during the process, and performing thermal management according to the predicted temperature can enable the battery to be in a better working state, effectively reduce the redundancy of the system, reduce unnecessary energy waste, and reduce the vehicle thermal management power consumption.

[0005] A battery thermal management control method, a battery management controller, a system and a vehicle. The method includes: obtaining the maximum heating temperature value of the current module and comparing it with a preset temperature threshold. If the maximum heating temperature value of the current module is greater than or equal to the preset temperature threshold, closing the heating circuit of the current module, selecting the module with the shortest shutdown time from the current modules with the heating circuit closed as the target module, obtaining the temperature value of the target module and the maximum temperature values of other non-closed modules, comparing the temperature value of the target module with the maximum temperature values of other non-closed modules. If the maximum temperature value of other non-closed modules is greater than or equal to the temperature value of the target module, closing the heating circuits of other non-closed modules. The battery management controller of the present invention closes the heating circuit of the module according to the comparison result of the module temperature values, reduces the temperature difference of the module, and improves the service life of the power battery system and the driving range of the whole vehicle.

[0006] The control device and method structure of the above battery thermal management system are complex, and the thermal management performance of the power battery is poor. Summary of the Invention

[0007] The present invention provides a control device, method, battery and vehicle for a dynamic flow uniform liquid cooling plate, which can realize uniform control of the internal flow of the battery liquid cooling plate, balance the pressure impact of the internal coolant on the liquid cooling plate, and improve the thermal management performance and service life of the battery liquid cooling plate.

[0008] The technical solution of the present invention is described in conjunction with the accompanying drawings as follows:

[0009] In a first aspect, an embodiment of the present invention provides a control device for a dynamic flow uniform liquid cooling plate, including a balance controller 1, a battery liquid cooling plate, a sensor 4 and a battery management system 5; the battery liquid cooling plate includes a battery liquid cooling plate upper plate 2 and a battery liquid cooling plate lower plate 3 integrally cast; the balance controller 1 is fixed on the battery liquid cooling plate upper plate 2; the sensor 4 is fixed at the position of the total inlet and outlet channels of the battery liquid cooling plate to collect the coolant pressure and coolant temperature; the battery management system 5 is connected to the balance controller 1 and collects the signals of the sensor 4.

[0010] Further, the battery liquid cooling plate upper plate 2 is a flat plate structure; a flow channel structure is arranged inside the battery liquid cooling plate lower plate 3; there are a battery liquid cooling plate inlet channel 101 and a battery liquid cooling plate outlet channel 102 on the battery liquid cooling plate.

[0011] Further, the balance controller 1 has two arrangement methods: the first is to be arranged on the battery liquid cooling plate inlet channel 101 and the battery liquid cooling plate outlet channel 102 to connect the two channels; the second is to be arranged on a group of adjacent battery liquid cooling plate flow channel branches to connect the battery liquid cooling plate inlet channel 101 and the battery liquid cooling plate outlet channel 102.

[0012] Furthermore, the number of the balance controllers 1 ≥ 3. At least two balance controllers 1 are arranged on a set of adjacent battery liquid cooling plate flow path branches, one is arranged near the inlet flow path 101 of the battery liquid cooling plate, and one is arranged at the position on the outlet flow path 102 of the battery liquid cooling plate.

[0013] Furthermore, the balance controller 1 includes a water pipe 103, a tapered hole 104, a wireless electromagnetic controller 105, a valve sphere 106 and an elastic element 107; the water pipe 103 is connected to the flow path of the battery liquid cooling plate and has two types: an incoming flow end and an outgoing flow end; the tapered hole 104 is a tapered structure, the front end of the small hole is connected to the incoming flow end in the water pipe 103, and the large hole is connected to the outgoing flow end in the water pipe 103; the wireless electromagnetic controller 105 is sleeved on the tapered hole 104; the valve sphere 106 is arranged in the tapered hole 104; one end of the elastic element 107 abuts against the rear end of the large hole of the tapered hole 104, and one end abuts against the valve sphere 106.

[0014] Furthermore, the elastic element 107 is always in a compressed state. When the coolant inside the battery liquid cooling plate does not flow, the elastic element 107 pushes the valve sphere 106 to the front end of the small hole of the tapered hole 104, and the balance controller 1 is in a cut-off state, and the coolant cannot flow; the wireless electromagnetic controller 105 communicates with the battery management system 5 wirelessly; the battery management system 5 controls the state of the wireless electromagnetic controller 105, and the wireless electromagnetic controller 105 controls the expansion and contraction of the elastic element 107 through the principle of electromagnetic induction.

[0015] In a second aspect, the present invention also provides a control method for a control device of a dynamic flow uniform liquid cooling plate, including a liquid cooling plate dynamic flow uniform control method and a liquid cooling plate dynamic pressure balance control method;

[0016] The liquid cooling plate dynamic flow uniform control method includes the following steps:

[0017] 11) The battery management system 5 collects the temperature of the battery module.

[0018] 12) The battery management system 5 makes a judgment according to the collected temperature of the battery module, judges which control mode the battery liquid cooling plate is in and executes the corresponding control mode; wherein, there are three control modes: no working mode, normal mode and extreme mode;

[0019] 13) The battery management system 5 collects the temperature of the battery module again, and makes a signal feedback on the collected temperature of the battery module, judges whether it meets the standard, if not, repeats step 12); otherwise, exits the control.

[0020] The liquid cooling plate dynamic pressure balance control method includes the following steps:

[0021] 21) Signal reception: The battery management system 5 collects the pressure of the sensor 4.

[0022] 22) Mode judgment: The battery management system 5 makes a judgment based on the collected pressure to determine which control mode the battery liquid cooling plate is in and execute the corresponding control mode. Among them, there are three control modes: no working mode, normal mode, and extreme mode.

[0023] 23) The battery management system 5 collects the pressure of the sensor 4 again and performs signal feedback on the collected pressure of the sensor 4 to determine whether it meets the standard. If it does not meet the standard, repeat step 22); otherwise, exit the control.

[0024] Furthermore, in step 12), define the highest temperature of the battery module collected by the battery management system 5 as TM; the lowest temperature of the battery module collected by the battery management system 5 as TN; the temperature difference as TC, TC = TM - TN; the temperature difference is calculated from the implementation test data per second.

[0025] No working mode: TC ≤ 5 * tanC, where C is the temperature compensation coefficient, and π / 6 < C < π / 3; the battery management system 5 has no action, and all balance controllers 1 do not work.

[0026] Normal mode: 7 * tanC > TC > 5 * tanC, where C is the temperature compensation coefficient; the battery management system 5 issues a signal command, and the balance controllers 1 arranged on all adjacent battery liquid cooling plate flow path branches perform control, compressing the elastic element 107, and the valve sphere 106 is flushed open by the coolant. The coolant in the larger flow path branch flows through the balance controller 1 to the smaller flow path branch; the balance controllers 1 arranged on the battery liquid cooling plate inlet flow path 101 and the battery liquid cooling plate outlet flow path 102 do not act; after the mode works for 3 minutes, enter the action feedback.

[0027] Extreme mode: TC ≥ 7 * tanC, where C is the temperature compensation coefficient; the battery management system 5 issues a signal command, and the balance controllers 1 arranged on all adjacent battery liquid cooling plate flow path branches and the balance controllers 1 arranged on the battery liquid cooling plate inlet flow path 101 and the battery liquid cooling plate outlet flow path 102 perform control together, compressing the elastic element 107, and the valve sphere 106 is flushed open by the coolant. Among them, the balance controllers 1 arranged on all adjacent battery liquid cooling plate flow path branches are in the normally open state, and the balance controllers 1 arranged on the battery liquid cooling plate inlet flow path 101 and the battery liquid cooling plate outlet flow path 102 are in intermittent action control, with a time interval of normally open for 20S and normally closed for 10S, and keep cycling; the internal flow path of the overall liquid cooling plate performs flow distribution, and after the mode works for 5 minutes, enter the action feedback.

[0028] Thermal runaway mode: When TC ≥ TS, the battery management system BMS sends a demand instruction to the vehicle HCU. The HCU sends an instruction to the vehicle water pump connected in series in the battery thermal management system, which rotates at a speed twice that of normal to supply coolant. Moreover, the vehicle HCU controls the explosion-proof valve, and the explosion-proof valve breaks through the flexible pipe 2, and the coolant accelerates to flow out to extinguish the battery thermal runaway flame, further delaying thermal runaway;

[0029] Step 13), TC ≤ 5 * tanC meets the standard;

[0030] Step 22) Define the allowable pressure difference of the battery liquid cooling plate as P1. The pressure at the inlet and outlet of the flow channel collected by the battery management system 5 is PJ and PC, and the pressure difference is PT = PJ - PC. The pressure difference is calculated from the implementation test data per second;

[0031] No working mode: PT ≤ P1 * sinA * cosB, where A is the flow channel structure compensation coefficient of the liquid cooling plate and B is the pressure shock compensation coefficient; the battery management system 5 has no action and all balance controllers 1 do not work;

[0032] Normal mode: P1 > PT > P1 * sinA * cosB, where A is the flow channel structure compensation safety coefficient of the liquid cooling plate and B is the pressure shock compensation safety coefficient; the battery management system 5 sends a signal instruction, and the balance controllers 1 arranged on the inlet flow channel 101 and the outlet flow channel 102 of the battery liquid cooling plate are controlled to compress the elastic element 107, and the valve sphere 106 is flushed open by the coolant, and the inlet flow channel 101 and the outlet flow channel 102 of the battery liquid cooling plate are connected to reduce the overall flow channel resistance; after the mode works for 20s, it enters the action feedback;

[0033] Extreme mode: PT ≥ P1; the battery management system 5 sends a signal instruction, and the balance controllers 1 arranged on the inlet flow channel 101 and the outlet flow channel 102 of the battery liquid cooling plate are controlled to compress the elastic element 107, and the valve sphere 106 is flushed open by the coolant, and the inlet flow channel 101 and the outlet flow channel 102 of the battery liquid cooling plate are connected to reduce the overall flow channel resistance. After the mode works for 30s and PT ≤ P1 * sinA * cosB, it enters the action feedback;

[0034] Step 23) PT ≤ P1 * sinA * cosB meets the standard.

[0035] Thirdly, the embodiment of the present invention also provides a battery, including a control device for a dynamic flow uniform liquid cooling plate.

[0036] Fourthly, the embodiment of the present invention also provides a vehicle, including a battery.

[0037] The beneficial effects of the present invention are:

[0038] 1) The present invention can perform uniform control of dynamic flow rate and dynamic pressure balance control on the liquid cooling plate;

[0039] 2) In the present invention, the balance controller has a simple structure and can achieve uniform control of dynamic flow rate and dynamic pressure balance control of the liquid cooling plate

[0040] 3) The present invention can achieve uniform control of the internal flow rate of the battery liquid cooling plate, balance the pressure impact of the internal coolant on the liquid cooling plate, and improve the thermal management performance and service life of the battery liquid cooling plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0042] Figure 1 It is a schematic diagram of the overall structure of a control device for a dynamic flow rate uniform liquid cooling plate according to the present invention from one angle;

[0043] Figure 2 It is a schematic diagram of the overall structure of another angle of the present invention;

[0044] Figure 3 It is a schematic diagram of the structure of the balance controller in the present invention;

[0045] Figure 4 It is a schematic diagram of the working state of the balance controller in the present invention;

[0046] Figure 5 It is a flowchart of a control method for a dynamic flow rate uniform liquid cooling plate according to the present invention.

[0047] In the figure:

[0048] 1. Balance controller;

[0049] 101. Inlet flow channel of the battery liquid cooling plate; 102. Outlet flow channel of the battery liquid cooling plate; 103. Water pipe; 104. Tapered hole; 105. Wireless electromagnetic controller; 106. Valve sphere; 107. Elastic element;

[0050] 2. Upper plate of the battery liquid cooling plate;

[0051] 3. Lower plate of the battery liquid cooling plate;

[0052] 4. Sensor;

[0053] 5. Battery management system. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0054] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0055] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include indirect contact between the first and second features through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0056] In the description of this embodiment, the orientation or positional relationship terms such as "upper", "lower", "left" and "right" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0057] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0058] Embodiment 1

[0059] Refer to Figure 1 - Figure 2 , a control device for a dynamic flow uniform liquid cooling plate, comprising a balance controller 1, a battery liquid cooling plate, a sensor 4 and a battery management system 5.

[0060] The battery liquid cooling plate includes an integrally cast upper plate 2 and a lower plate 3 of the battery liquid cooling plate; the balance controller 1 is fixed on the upper plate 2 of the battery liquid cooling plate; the sensor 4 is fixed at the position of the total inlet and outlet channels of the battery liquid cooling plate to collect the coolant pressure and coolant temperature; the battery management system 5 is connected to the balance controller 1 and collects the signals of the sensor 4. The battery management system 5 can control the balance controller 1 and collect the signals of the sensor 4.

[0061] The upper plate 2 of the battery liquid cooling plate is of a flat plate structure.

[0062] The interior of the lower plate 3 of the battery liquid cooling plate is provided with a flow channel structure; there are at least two groups of branch channels in the battery liquid cooling plate channels; there are a battery liquid cooling plate inlet channel 101 and a battery liquid cooling plate outlet channel 102 on the battery liquid cooling plate.

[0063] The balance controller 1 has two arrangement methods: the first is to be arranged on the battery liquid cooling plate inlet channel 101 and the battery liquid cooling plate outlet channel 102 to connect the two channels; the second is to be arranged on a group of adjacent battery liquid cooling plate channel branches to connect the battery liquid cooling plate inlet channel 101 and the battery liquid cooling plate outlet channel 102.

[0064] See Figure 3 and Figure 4 , the number of the balance controllers 1 ≥ 3, at least two balance controllers 1 are arranged on a group of adjacent battery liquid cooling plate channel branches, one is arranged at a position close to the battery liquid cooling plate inlet channel 101, and one is arranged at a position on the battery liquid cooling plate outlet channel 102.

[0065] The balance controller 1 includes a water pipe 103, a tapered hole 104, a wireless electromagnetic controller 105, a valve sphere 106 and an elastic element 107; the water pipe 103 is connected to the channels of the battery liquid cooling plate and has two types: an incoming flow end and an outgoing flow end; the tapered hole 104 is of a tapered structure, the front end of the small hole is connected to the incoming flow end in the water pipe 103, and the large hole is connected to the outgoing flow end in the water pipe 103; the wireless electromagnetic controller 105 is sleeved on the tapered hole 104; the valve sphere 106 is arranged in the tapered hole 104; one end of the elastic element 107 abuts against the rear end of the large hole of the tapered hole 104, and the other end abuts against the valve sphere 106.

[0066] The elastic element 107 is always in a compressed state. When the coolant inside the battery liquid cooling plate does not flow, the elastic element 107 pushes the valve sphere 106 to the front end of the small hole of the tapered hole 104, and the balance controller 1 is in a cut-off state, and the coolant cannot flow; the wireless electromagnetic controller 105 communicates with the battery management system 5 wirelessly; the battery management system 5 controls the state of the wireless electromagnetic controller 105, and the wireless electromagnetic controller 105 controls the expansion and contraction of the elastic element 107 through the principle of electromagnetic induction.

[0067] The above structure can achieve uniform control of the internal flow rate of the battery liquid cooling plate and balance the pressure impact of the internal coolant on the liquid cooling plate.

[0068] Embodiment 2

[0069] Refer to Figure 5 , a control method for a dynamic flow rate uniform liquid cooling plate, comprising the following steps:

[0070] It includes a liquid cooling plate dynamic flow rate uniform control method and a liquid cooling plate dynamic pressure balance control method;

[0071] The liquid cooling plate dynamic flow rate uniform control method includes the following steps:

[0072] 11) The battery management system 5 collects the temperature of the battery module;

[0073] 12) The battery management system 5 makes a judgment based on the collected temperature of the battery module, determines which control mode the battery liquid cooling plate is in and executes the corresponding control mode; wherein, there are three control modes: no working mode, normal mode and extreme mode;

[0074] Define the highest temperature of the battery module collected by the battery management system 5 as TM; the lowest temperature of the battery module collected by the battery management system 5 as TN; the temperature difference as TC, TC = TM - TN; the temperature difference is calculated from the implementation test data per second;

[0075] According to the flow resistance characteristics of the coolant liquid, the flow resistance of the branch flow channels near the total inlet and outlet is smaller, so the flow rate of the branch flow channels near the total inlet and outlet is larger, and the battery temperature on the liquid cooling plate corresponding to the branch flow channels near the total inlet and outlet is lower;

[0076] No working mode: TC ≤ 5 * tanC, where C is the temperature compensation coefficient, and π / 6 < C < π / 3; the battery management system 5 has no action and all balance controllers 1 do not work;

[0077] Normal mode: 7 * tanC > TC > 5 * tanC, where C is the temperature compensation coefficient; the battery management system 5 issues a signal command, and the balance controllers 1 arranged on all adjacent battery liquid cooling plate flow channel branches are controlled to compress the elastic element 107, and the valve sphere 106 is flushed open by the coolant, and the coolant in the larger flow rate branch flows to the smaller flow rate channel branch through the balance controller 1; the balance controllers 1 arranged on the battery liquid cooling plate inlet flow channel 101 and the battery liquid cooling plate outlet flow channel 102 do not act; after the mode works for 3 minutes, it enters the action feedback;

[0078] Extreme mode: TC≥7*tanC, where C is the temperature compensation coefficient; the battery management system 5 issues a signal command, and the balance controllers 1 arranged on all adjacent battery liquid cooling plate flow path branches and the balance controllers 1 arranged on the battery liquid cooling plate inlet flow path 101 and the battery liquid cooling plate outlet flow path 102 control together to compress the elastic element 107, and the valve sphere 106 is flushed open by the coolant; among them, the balance controllers 1 arranged on all adjacent battery liquid cooling plate flow path branches are in the normally open state, and the balance controllers 1 arranged on the battery liquid cooling plate inlet flow path 101 and the battery liquid cooling plate outlet flow path 102 are controlled by intermittent action, with a time interval of normally open for 20S and normally closed for 10S, and it circulates continuously; the internal flow path of the overall liquid cooling plate conducts flow distribution, and after the mode works for 5 minutes, it enters the action feedback;

[0079] Thermal runaway mode: TC≥TS, the battery management system BMS issues a demand command to the vehicle HCU, and the HCU issues a command to the vehicle water pump connected in series in the battery thermal management system to rotate at a speed exceeding twice the normal speed to supply coolant. Moreover, the vehicle HCU controls the explosion-proof valve, and the explosion-proof valve breaks through the flexible top pipe 2, and the coolant accelerates to flow out to extinguish the battery thermal runaway flame, further delaying the thermal runaway;

[0080] 13) The battery management system 5 collects the temperature of the battery module again, and conducts signal feedback on the collected temperature of the battery module to judge whether it meets the standard, TC≤5*tanC meets the standard; if it does not meet the standard, repeat step 12); otherwise, exit the control;

[0081] The dynamic pressure balance control method of the liquid cooling plate includes the following steps:

[0082] 21) Signal reception: The battery management system 5 collects the pressure of the sensor 4;

[0083] 22) Mode judgment: The battery management system 5 judges according to the collected pressure to judge which control modes the battery liquid cooling plate is in and execute the corresponding control modes; among them, there are three control modes: no working mode, normal mode and extreme mode;

[0084] Define the allowable pressure difference of the battery liquid cooling plate as P1, the inlet and outlet pressures of the flow path collected by the battery management system 5 are PJ and PC, and the pressure difference is PT = PJ - PC, and the pressure difference is calculated from the implementation test data per second;

[0085] No working mode: PT≤P1*sinA*cosB, where A is the liquid cooling plate flow path structure compensation coefficient and B is the pressure shock compensation coefficient; the battery management system 5 has no action, and all balance controllers 1 do not work;

[0086] Normal mode: P1 > PT > P1 * sinA * cosB, where A is the compensation safety factor of the liquid cooling plate flow channel structure and B is the pressure shock compensation safety factor; the battery management system 5 issues a signal command, and the balance controller 1 arranged on the battery liquid cooling plate inlet flow channel 101 and the battery liquid cooling plate outlet flow channel 102 controls, compresses the elastic element 107, the valve sphere 106 is flushed open by the coolant, the battery liquid cooling plate inlet flow channel 101 and the battery liquid cooling plate outlet flow channel 102 are connected, reducing the overall flow channel resistance; after the mode works for 20s, it enters the action feedback;

[0087] Extreme mode: PT ≥ P1; the battery management system 5 issues a signal command, and the balance controller 1 arranged on the battery liquid cooling plate inlet flow channel 101 and the battery liquid cooling plate outlet flow channel 102 controls, compresses the elastic element 107, the valve sphere 106 is flushed open by the coolant, the battery liquid cooling plate inlet flow channel 101 and the battery liquid cooling plate outlet flow channel 102 are connected, reducing the overall flow channel resistance. After the mode works for 30s and PT ≤ P1 * sinA * cosB, it enters the action feedback;

[0088] 23) The battery management system 5 collects the pressure of the sensor 4 again, and performs signal feedback on the collected pressure of the sensor 4 to determine whether it meets the standard, PT ≤ P1 * sinA * cosB meets the standard; if it does not meet the standard, repeat step 22); otherwise, exit the control.

[0089] The above method can achieve uniform control of the internal flow rate of the battery liquid cooling plate and balance the pressure impact of the internal coolant on the liquid cooling plate.

[0090] Embodiment III

[0091] This embodiment also provides a battery, which includes the above control device for a dynamically flow-uniform liquid cooling plate, including a balance controller 1, a battery liquid cooling plate, a sensor 4, and a battery management system 5.

[0092] The battery liquid cooling plate includes a battery liquid cooling plate upper plate 2 and a battery liquid cooling plate lower plate 3 cast integrally; the balance controller 1 is fixed on the battery liquid cooling plate upper plate 2; the sensor 4 is fixed at the position of the total inlet and outlet flow ports of the battery liquid cooling plate to collect the coolant pressure and coolant temperature; the battery management system 5 is connected to the balance controller 1 and collects the signals of the sensor 4. The battery management system 5 can control the balance controller 1 and collect the signals of the sensor 4.

[0093] The battery liquid cooling plate upper plate 2 is a flat plate structure.

[0094] The interior of the battery liquid cooling plate lower plate 3 is provided with a flow channel structure; there are at least two groups of branches in the battery liquid cooling plate flow channel; there are a battery liquid cooling plate inlet flow channel 101 and a battery liquid cooling plate outlet flow channel 102 on the battery liquid cooling plate.

[0095] The balance controller 1 has two arrangement methods: First, it is arranged on the inlet flow channel 101 and the outlet flow channel 102 of the battery liquid cooling plate to connect the two flow channels; Second, it is arranged on a group of adjacent battery liquid cooling plate flow channel branches to connect the inlet flow channel 101 and the outlet flow channel 102 of the battery liquid cooling plate.

[0096] Refer to Figure 3 and Figure 4 , the number of the balance controllers 1 ≥ 3, at least 2 balance controllers 1 are arranged on a group of adjacent battery liquid cooling plate flow channel branches, one is arranged at a position close to the inlet flow channel 101 of the battery liquid cooling plate, and one is arranged at a position on the outlet flow channel 102 of the battery liquid cooling plate.

[0097] The balance controller 1 includes a water pipe 103, a tapered hole 104, a wireless electromagnetic controller 105, a valve sphere 106, and an elastic element 107; the water pipe 103 is connected to the flow channel of the battery liquid cooling plate, and there are two types: the incoming flow end and the outgoing flow end; the tapered hole 104 is a tapered structure, the front end of the small hole is connected to the incoming flow end in the water pipe 103, and the large hole is connected to the outgoing flow end in the water pipe 103; the wireless electromagnetic controller 105 is sleeved on the tapered hole 104; the valve sphere 106 is arranged in the tapered hole 104; one end of the elastic element 107 abuts against the rear end of the large hole of the tapered hole 104, and one end abuts against the valve sphere 106.

[0098] The elastic element 107 is always in a compressed state. When the coolant inside the battery liquid cooling plate does not flow, the elastic element 107 pushes the valve sphere 106 to the front end of the small hole of the tapered hole 104, and the balance controller 1 is in a cut-off state, and the coolant cannot flow; the wireless electromagnetic controller 105 communicates with the battery management system 5 wirelessly; the battery management system 5 controls the state of the wireless electromagnetic controller 105, and the wireless electromagnetic controller 105 controls the expansion and contraction of the elastic element 107 through the principle of electromagnetic induction.

[0099] A battery including a control device for a dynamic flow uniform liquid cooling plate is safer and can improve performance and service life.

[0100] Embodiment 4

[0101] This embodiment also provides a vehicle, which includes the above-mentioned battery. The installation of the battery improves the stability and safety of the vehicle.

[0102] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the protection scope of the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, any person skilled in the art within the technical scope disclosed by the present invention can make equivalent substitutions or changes according to the technical solution and inventive concept of the present invention. These simple variations all fall within the protection scope of the present invention.

[0103] In addition, it should be noted that, in the above specific embodiments, the various specific technical features described can be combined in any appropriate manner without contradiction. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods.

[0104] Furthermore, any arbitrary combination can be made between various different embodiments of the present invention, as long as it does not violate the idea of the present invention, and it should also be regarded as the content disclosed by the present invention.

Claims

1. A control device for a dynamic flow-uniform liquid cooling plate, characterized in that, it includes a balance controller (1), a battery liquid cooling plate, a sensor (4) and a battery management system (5); the battery liquid cooling plate includes an integrally cast upper plate (2) and a lower plate (3) of the battery liquid cooling plate; the balance controller (1) is fixed on the upper plate (2) of the battery liquid cooling plate; the sensor (4) is fixed at the total inlet and outlet flow ports of the battery liquid cooling plate to collect the coolant pressure and coolant temperature; the battery management system (5) is connected to the balance controller (1) and collects the signals of the sensor (4); the upper plate (2) of the battery liquid cooling plate is a flat plate structure; the inside of the lower plate (3) of the battery liquid cooling plate is provided with a flow channel structure; the battery liquid cooling plate has a battery liquid cooling plate inlet flow channel (101) and a battery liquid cooling plate outlet flow channel (102); the balance controller (1) has two arrangement methods: the first is to be arranged on the battery liquid cooling plate inlet flow channel (101) and the battery liquid cooling plate outlet flow channel (102) to connect the two flow channels; the second is to be arranged on a group of adjacent battery liquid cooling plate flow channel branches to connect the battery liquid cooling plate inlet flow channel (101) and the battery liquid cooling plate outlet flow channel (102); the balance controller (1) includes a water pipe (103), a tapered hole (104), a wireless electromagnetic controller (105), a valve sphere (106) and an elastic element (107); the water pipe (103) is connected to the flow channel of the battery liquid cooling plate and has two types: an incoming flow end and an outgoing flow end; the tapered hole (104) is a tapered structure, the front end of the small hole is connected to the incoming flow end in the water pipe (103), and the large hole is connected to the outgoing flow end in the water pipe (103); the wireless electromagnetic controller (105) is sleeved on the tapered hole (104); the valve sphere (106) is arranged in the tapered hole (104); one end of the elastic element (107) abuts against the rear end of the large hole of the tapered hole (104), and one end abuts against the valve sphere (106).

2. The control device for a dynamic flow-uniform liquid cooling plate according to claim 1, characterized in that, the number of the balance controllers (1) ≥ 3, at least 2 balance controllers (1) are arranged on a group of adjacent battery liquid cooling plate flow channel branches, one is arranged at a position close to the battery liquid cooling plate inlet flow channel (101), and one is arranged at a position on the battery liquid cooling plate outlet flow channel (102).

3. The control device for a dynamic flow-uniform liquid cooling plate according to claim 2, characterized in that, the elastic element (107) is always in a compressed state. When the coolant inside the battery liquid cooling plate does not flow, the elastic element (107) pushes the valve sphere (106) against the front end of the small hole of the tapered hole (104), and the balance controller (1) is in a cut-off state, and the coolant cannot flow; the wireless electromagnetic controller (105) communicates with the battery management system (5) wirelessly; the battery management system (5) controls the state of the wireless electromagnetic controller (105), and the wireless electromagnetic controller (105) controls the expansion and contraction of the elastic element (107) through the principle of electromagnetic induction.

4. Control method of a control device for a dynamic flow-uniform liquid cooling plate according to any one of claims 1-3, characterized in that, it includes a liquid cooling plate dynamic flow-uniform control method and a liquid cooling plate dynamic pressure balance control method; The liquid cooling plate dynamic flow-uniform control method includes the following steps: 11) The battery management system (5) collects the temperature of the battery module; 12) The battery management system (5) makes a judgment based on the collected temperature of the battery module, determines which control mode the battery liquid cooling plate is in and executes the corresponding control mode; among them, there are three control modes: no working mode, normal mode and extreme mode; 13) The battery management system (5) collects the temperature of the battery module again, and performs signal feedback on the collected temperature of the battery module to determine whether it meets the standard. If it does not meet the standard, repeat step 12); otherwise, exit the control; The liquid cooling plate dynamic pressure balance control method includes the following steps: 21) Signal reception: The battery management system (5) collects the pressure of the sensor (4); 22) Mode judgment: The battery management system (5) makes a judgment based on the collected pressure, determines which control modes the battery liquid cooling plate is in and executes the corresponding control modes; among them, there are three control modes: no working mode, normal mode and extreme mode; 23) The battery management system (5) collects the pressure of the sensor (4) again, and performs signal feedback on the collected pressure of the sensor (4) to determine whether it meets the standard. If it does not meet the standard, repeat step 22); otherwise, exit the control.

5. Control method of a control device for a dynamic flow-uniform liquid cooling plate according to claim 4, characterized in that, In step 12), define the highest temperature of the battery module collected by the battery management system (5) as TM; the lowest temperature of the battery module collected by the battery management system (5) as TN; the temperature difference as TC, TC = TM - TN; the temperature difference is calculated from the implementation test data per second; No working mode: TC ≤ 5 * tanC, where C is the temperature compensation coefficient, and π / 6 < C < π / 3; the battery management system (5) has no action, and all balance controllers (1) do not work; Normal mode: 7 * tanC > TC > 5 * tanC, where C is the temperature compensation coefficient; the battery management system (5) issues a signal command, and the balance controllers (1) arranged on all adjacent battery liquid cooling plate flow path branches are controlled to compress the elastic element (107), and the valve sphere (106) is flushed open by the coolant, and the coolant in the large-flow branch flows through the balance controller (1) to the small-flow path branch; the balance controllers (1) arranged on the battery liquid cooling plate inlet flow path (101) and the battery liquid cooling plate outlet flow path (102) do not act; after the mode works for 3 minutes, enter the action feedback; Extreme mode: TC≥7*tanC, where C is the temperature compensation coefficient; the battery management system (5) issues a signal command, and the balance controllers (1) arranged on all adjacent battery liquid cooling plate flow path branches and the balance controllers (1) arranged on the battery liquid cooling plate inlet flow path (101) and the battery liquid cooling plate outlet flow path (102) control together to compress the elastic element (107), and the valve sphere (106) is flushed open by the coolant; among them, the balance controllers (1) arranged on all adjacent battery liquid cooling plate flow path branches are in the normally open state, and the balance controller 1 arranged on the battery liquid cooling plate inlet flow path (101) and the battery liquid cooling plate outlet flow path (102) is controlled by intermittent action, with a time interval of normally open for 20S and normally closed for 10S, cycling continuously; the internal flow path of the overall liquid cooling plate is subjected to flow distribution, and after the mode works for 5 minutes, it enters the action feedback; Thermal runaway mode: TC≥TS, the battery management system BMS issues a demand command to the vehicle HCU, and the HCU issues a command to the vehicle water pump connected in series in the battery thermal management system to rotate at a speed exceeding twice the normal speed to supply coolant, and moreover, the vehicle HCU controls the explosion-proof valve, and the explosion-proof valve breaks through the flexible top pipe (2), and the coolant accelerates out to extinguish the battery thermal runaway flame, further delaying thermal runaway; Step 13), TC≤5*tanC meets the standard; Step 22) Define the allowable pressure difference of the battery liquid cooling plate as P1, the pressures at the inlet and outlet of the flow path collected by the battery management system (5) are PJ and PC, the pressure difference is PT = PJ - PC, and the pressure difference is calculated from the implementation test data per second; No working mode: PT≤P1*sinA*cosB, where A is the liquid cooling plate flow path structure compensation coefficient and B is the pressure shock compensation coefficient; the battery management system 5 has no action, and all balance controllers (1) do not work; Normal mode: P1>PT>P1*sinA*cosB, where A is the liquid cooling plate flow path structure compensation safety factor and B is the pressure shock compensation safety factor; the battery management system (5) issues a signal command, and the balance controllers (1) arranged on the battery liquid cooling plate inlet flow path (101) and the battery liquid cooling plate outlet flow path (102) control to compress the elastic element (107), and the valve sphere (106) is flushed open by the coolant, and the battery liquid cooling plate inlet flow path (101) and the battery liquid cooling plate outlet flow path (102) are connected to reduce the overall flow path resistance; after the mode works for 20s, it enters the action feedback; Extreme mode: PT≥P1; the battery management system (5) issues a signal command, and the balance controller 1 arranged on the battery liquid cooling plate inlet flow path (101) and the battery liquid cooling plate outlet flow path (102) controls to compress the elastic element (107), and the valve sphere (106) is flushed open by the coolant, and the battery liquid cooling plate inlet flow path 101 and the battery liquid cooling plate outlet flow path (102) are connected to reduce the overall flow path resistance, and after the mode works for 30s and PT≤P1*sinA*cosB, it enters the action feedback; Step 23) PT≤P1*sinA*cosB meets the standard.

6. A battery, characterized in that, A control device for a dynamic flow rate uniform liquid cooling plate according to any one of claims 1-3.

7. A vehicle, characterized in that it includes a battery according to claim 6.

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