Heating system of battery module, heating equipment of battery module and heating method of battery module

Abstract

The invention provides a heating system of a battery module, heating equipment of the battery module and a heating method of the battery module, and the heating system of the battery module comprises a heating device (1) used for heating the battery module; a temperature detection unit (2) including a first temperature detection member (21) configured to detect the temperature of the heating device (1); the circuit control part (4) comprises a power adjusting device (41) which is arranged in a power supply circuit (3) electrically connected with the heating part (1) and is used for adjusting the heating power of the heating part (1); and the temperature control device (5) is in signal connection with the first temperature detection part (21) and the power adjusting device (41) and is configured to adjust the heating power of the heating device (1) through the circuit control part (4) based on the difference value between the temperature detected by the first temperature detection part (21) and the preset temperature so as to adjust the temperature of the heating device (1) to the preset temperature.

Description

Battery module heating system, battery module heating device and battery module heating method Technical Field

[0001] The present disclosure relates to the field of battery technology, and in particular to a heating system for a battery module, a heating device for a battery module, and a heating method for a battery module. Background Art

[0002] During the production of power battery modules, a module heating process is required, which plays a decisive role in the curing of the colloid inside the module.

[0003] Summary of the Invention

[0004] The present disclosure provides a battery module heating system, a battery module heating device, and a battery module heating method capable of accurately controlling the heating temperature.

[0005] The present disclosure provides a heating system for a battery module, the heating system comprising:

[0006] A heating device, used for heating the battery module;

[0007] a temperature detecting portion including a first temperature detecting member configured to detect a temperature of the heating device;

[0008] a circuit control component, comprising a power regulating component provided in a power supply circuit electrically connected to the heating component and regulating the heating power of the heating device; and

[0009] The temperature control device is signal-connected to the first temperature detection component and the power adjustment device and is configured to:

[0010] Based on the difference between the temperature detected by the first temperature detecting component and the predetermined temperature, the heating power of the heating device is adjusted by the circuit control component to adjust the temperature of the heating device toward the predetermined temperature.

[0011] In some embodiments,

[0012] The temperature detection unit further includes a second temperature detection component for detecting a temperature at a different position of the heating device than the first temperature detection component;

[0013] The circuit control component further includes a first switch component provided in the power supply circuit and connected in series with the power regulating device and the heating device;

[0014] The temperature control device is signal-connected to the second temperature detection component and the first switch component respectively and is configured to control the first switch component to cut off the power supply circuit in response to a difference between the temperatures detected by the first and second temperature detection components being greater than a predetermined difference.

[0015] In some embodiments, the temperature control device comprises:

[0016] a first temperature controller, signal-connected to the first temperature detecting component and the power regulating device, respectively, and configured to regulate the heating power of the heating device through the power regulating device based on a difference between a temperature detected by the first temperature detecting component and a predetermined temperature;

[0017] The second temperature controller is signal-connected to the second temperature detection component, the first switch component and the first temperature controller respectively. The second temperature controller is configured to control the second switch component to cut off the power supply circuit in response to the difference between the temperatures detected by the first temperature detection component and the second temperature detection component being greater than a predetermined difference.

[0018] In some embodiments, the first temperature controller comprises a PID controller.

[0019] In some embodiments, the power conditioning device includes one of a second switching component, a voltage regulator, and a frequency regulator.

[0020] In some embodiments,

[0021] The temperature detection unit further includes a third temperature detection component for detecting the temperature of the electric heating element of the heating device;

[0022] The circuit control component includes a third switch component, which is provided in the power supply circuit and connected in series with the heating device; and

[0023] The temperature control device is signal-connected to the third switch component and the third temperature detection component, and is configured to control the third switch component to cut off the power supply circuit in response to the temperature detected by the third temperature detection component reaching the limit temperature.

[0024] In some embodiments, the temperature control device includes a third temperature controller, which is signal-connected to the third switch component and the third temperature detection component respectively, and is configured to control the third switch component to cut off the power supply circuit in response to the temperature detected by the third temperature detection component reaching the limit temperature.

[0025] In some embodiments, the heating system of the battery module further comprises:

[0026] A current detection component is provided in the power supply circuit to detect the current in the power supply circuit;

[0027] The main control device is connected to the current detection component by signal. The main control device is configured to issue an alarm message in response to the current detected by the current component exceeding a predetermined range.

[0028] In some embodiments, the heating system of the battery module further includes a main control device, which is signal-connected to the first temperature controller and the second temperature controller respectively.

[0029] In some embodiments, a human-computer interaction device connected to the temperature control device by signal is further included, and the human-computer interaction device is provided with a first input portion for a user to input a predetermined temperature.

[0030] In some embodiments, the human-computer interaction device is provided with multiple first input parts, and the multiple first input parts are configured for the user to input multiple predetermined temperatures from low to high, and the temperature control device is configured to control the heating device to heat to the predetermined temperatures input by the multiple first input parts in sequence.

[0031] In some embodiments, the human-computer interaction device includes multiple second input parts arranged in one-to-one correspondence with the first input part, the second input part is configured to allow the user to input a predetermined time for maintaining a predetermined temperature input in the corresponding first input part, and the temperature control device is configured to control the heating device to maintain the predetermined temperature for the corresponding predetermined time.

[0032] In some embodiments, the heating device includes a plate-shaped component and electric heating elements uniformly arranged in the plate-shaped component, and the electric heating elements are electrically connected to a power supply circuit.

[0033] The present disclosure also provides a heating device for a battery module, the heating device comprising:

[0034] a placement device configured to carry the battery module;

[0035] In the above-mentioned battery module heating system, the heating device is installed on the placement device.

[0036] In some embodiments, the placement device includes two clamping components spaced apart from each other, and the heating device is disposed on the clamping components.

[0037] In some embodiments, the heating device comprises:

[0038] A plurality of heating reservoirs, each heating reservoir comprising at least one placement device;

[0039] A plurality of sub-distribution cabinets are provided corresponding to the plurality of heating storages, and the sub-distribution cabinets are provided with temperature control devices configured to control the temperature of the heating devices in the corresponding heating storages; and

[0040] The main distribution cabinet is provided with a main control device, which is signal-connected to the temperature control devices in multiple sub-distribution cabinets.

[0041] The present disclosure also provides a method for heating a battery module, the heating method comprising:

[0042] Obtaining temperature information of a heating device for heating a battery module;

[0043] Based on the difference between the temperature of the heating device and the predetermined temperature, a command is issued to adjust the heating power of the heating device to adjust the temperature of the heating device toward the predetermined temperature.

[0044] In some embodiments, the heating method further comprises:

[0045] obtaining temperature information of a first position of the heating device and temperature information of a second position different from the first position,

[0046] In response to a difference between the temperature at the first location and the temperature at the second location being greater than a predetermined difference, a command is issued to cut off a power supply circuit that supplies power to the heating device.

[0047] In some embodiments, the heating method further comprises:

[0048] Obtaining temperature information of the electric heating element of the heating device;

[0049] In response to the temperature of the electric heating element being greater than the limit temperature, a command is issued to cut off the power supply circuit that supplies electric energy to the heating device.

[0050] In some embodiments, the heating method further comprises:

[0051] Obtain multiple predetermined temperatures from low to high input by the user;

[0052] A command is issued to adjust the heating power of the heating device so as to heat the temperature of the heating device to a plurality of predetermined temperatures in sequence, with the maximum predetermined temperature being the target temperature.

[0053] In some embodiments, the heating method further comprises:

[0054] Obtaining a plurality of predetermined times corresponding to a plurality of predetermined temperatures input by a user;

[0055] A command is issued to adjust the heating power of the heating device to maintain the heating device at a predetermined temperature for a predetermined time.

[0056] In some embodiments, a control deviation is formed based on the difference between the predetermined temperature and the actual temperature of the heating device 1, and the deviation is linearly combined by proportion, integration and differentiation to form a control quantity to control the heating power of the heated device.

[0057] In the disclosed technical solution, a temperature control device is used to adjust the heating power of the heating device based on the difference between the temperature of the heating device detected by the first temperature detection component and the predetermined temperature, which is beneficial to improving the temperature stability and accuracy of the heating device, thereby ensuring the stability of the battery module to improve the quality of glue curing in the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on the drawings without any creative work.

[0059] FIG1 is a schematic structural diagram of a vehicle disclosed in one embodiment of the present disclosure;

[0060] FIG2 is a schematic diagram of an exploded structure of a battery pack disclosed in one embodiment of the present disclosure;

[0061] FIG3 is a system block diagram of a battery module heating system disclosed in one embodiment of the present disclosure;

[0062] FIG4 is a partial circuit diagram of a heating system for a battery module disclosed in one embodiment of the present disclosure;

[0063] FIG5 is a schematic structural diagram of a heating device of a heating system for a battery module disclosed in one embodiment of the present disclosure;

[0064] FIG6 is a schematic diagram of an interface of a human-computer interaction device of a battery module heating system disclosed in one embodiment of the present disclosure;

[0065] FIG7 is a schematic structural diagram of a heating device for a battery module disclosed in one embodiment of the present disclosure;

[0066] FIG8 is a schematic structural diagram of a battery module placement device of a battery module heating device disclosed in one embodiment of the present disclosure;

[0067] FIG9 is a partial structural diagram of a battery module placement device of a battery module heating device disclosed in one embodiment of the present disclosure;

[0068] FIG10 is an electrical layout diagram of a heating device for a battery module disclosed in one embodiment of the present disclosure;

[0069] FIG11 is a control flow chart of a heating system for a battery module according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0070] The following detailed description of the embodiments of the present disclosure is provided in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of the present disclosure, but are not intended to limit the scope of the present disclosure, that is, the present disclosure is not limited to the described embodiments.

[0071] In the description of the present disclosure, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inside", "outside", etc., indicating directions or positional relationships, are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present disclosure. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly perpendicular, but is within the allowable error range. "Parallel" is not strictly parallel, but is within the allowable error range.

[0072] The directional words appearing in the following description are all directions shown in the figures and do not limit the specific structure of the present disclosure. In the description of the present disclosure, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0073] FIG1 shows a schematic structural diagram of an electric device that uses a battery as a power source; as shown in FIG1 , the electric device of this embodiment includes a vehicle 1000, which may be a pure electric vehicle, a hybrid electric vehicle, or an extended-range vehicle, etc. A battery pack 100 is provided inside the vehicle 1000, and the battery pack 100 may be provided at the bottom, head, or tail of the vehicle 1000. The battery pack 100 may be used to power the vehicle 1000, for example, the battery pack 100 may serve as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery pack 100 to power the motor 300, for example, for starting, navigating, and operating power requirements of the vehicle 1000 during driving.

[0074] Electrical devices may be mobile phones, portable devices, laptop computers, electric vehicles, electric cars, ships, spacecraft, electric toys and electric tools, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc. Electric tools include metal cutting power tools, grinding power tools, assembly power tools and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planers.

[0075] In some embodiments of the present disclosure, the battery pack 100 can serve not only as the operating power source of the vehicle 1000, but also as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0076] Please refer to Figure 2, which is an exploded view of a battery pack 100 provided in some embodiments of the present disclosure. The battery pack 100 includes a case 110 and a battery module 120 provided in the case 110. The battery module 120 includes a plurality of battery cells, and the battery cells are accommodated in the case 110. Among them, the case 110 is used to provide a storage space for the battery cells, and the case 110 can adopt a variety of structures. In some embodiments, the case 110 may include a first part 111 and a second part 112, the first part 111 and the second part 112 covering each other, and the first part 111 and the second part 112 jointly define a storage space for accommodating the battery cells. The second portion 112 can be a hollow structure with one end open, and the first portion 111 can be a plate-like structure. The first portion 111 covers the open side of the second portion 112, so that the first portion 111 and the second portion 112 jointly define a storage space. The first portion 111 and the second portion 112 can also be hollow structures with one end open, with the open side of the first portion 111 covering the open side of the second portion 112. Of course, the box 110 formed by the first portion 111 and the second portion 112 can have various shapes, such as a cylinder, a rectangular parallelepiped, etc.

[0077] In the battery pack 100, there can be multiple battery cells, and the electrode terminal conductive connectors of two battery cells are connected to realize the series connection or parallel connection of the two battery cells. Multiple battery cells can be connected in series, in parallel, or in mixed connection. Mixed connection means that multiple battery cells are connected in series and in parallel. Multiple battery cells can be directly connected in series, in parallel, or in mixed connection, and then the whole composed of multiple battery cells is accommodated in the box 110; of course, the battery pack 100 can also be a battery module 120 in the form of multiple battery cells first connected in series, in parallel, or in mixed connection, and the multiple battery modules 120 are then connected in series, in parallel, or in mixed connection to form a whole, and accommodated in the box 110. The battery pack 100 can also include other structures. For example, the battery pack 100 can also include a busbar component for realizing electrical connection between multiple battery cells.

[0078] Each battery cell can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell can be cylindrical, flat, rectangular, or in other shapes.

[0079] During the process of heating the battery module to cure the glue inside, the stability of the heating temperature and the uniformity of the heating device across all positions affect the quality of the glue curing in the battery module. Furthermore, the heating device's target temperature and target heating time control scheme is also a very important step in ensuring the module glue curing area and quality.

[0080] In order to improve the temperature stability of the battery module, this embodiment provides a battery module heating system. As shown in Figures 3 and 4, the battery module heating system includes a heating device 1, a temperature detection unit 2, a circuit control component 4 and a temperature control device 5.

[0081] Heating device 1 is used to heat a battery module. Temperature detection unit 2 includes a first temperature detection component 21 configured to detect the temperature of heating device 1. Circuit control component 4 includes a power adjustment component 41 disposed in power supply circuit 3 electrically connected to heating device 1 and configured to adjust the heating power of heating device 1.

[0082] The temperature control device 5 is signal-connected to the first temperature detection component 21 and the power adjustment device 41 respectively and is configured to: based on the difference between the temperature detected by the first temperature detection component 21 and the predetermined temperature, adjust the heating power of the heating device 1 through the circuit control component 4 to adjust the temperature of the heating device 1 to the predetermined temperature.

[0083] In this embodiment, a temperature control device is used to adjust the heating power of the heating device 1 based on the difference between the temperature of the heating device 1 detected by the first temperature detection component 21 and the predetermined temperature, which is beneficial to improving the temperature stability and accuracy of the heating device 1, thereby ensuring the stability of the heating temperature of the battery module to improve the quality of glue curing in the battery module.

[0084] In some embodiments, the first temperature detection component 21 includes a thermocouple. In some embodiments, the thermocouple is a K-type thermocouple.

[0085] In some embodiments, the temperature detection unit 2 also includes a second temperature detection component 22 that detects the temperature at a different position of the heating device 1 than the first temperature detection component 21; the circuit control component 4 also includes a first switch component 42 arranged in the power supply circuit 3 and connected in series with the power regulating device 41 and the heating device 1.

[0086] The temperature control device 5 is signal-connected to the second temperature detection component 22 and the first switch component 42 respectively and is configured to: in response to the difference in temperature detected by the first temperature detection component 21 and the second temperature detection component 22 being greater than a predetermined difference, control the first switch component 42 to cut off the power supply circuit 3.

[0087] The temperature control device 5 cuts off the power supply circuit 3 when the temperature difference at different positions of the heating device 1 is greater than a predetermined temperature difference, so as to prevent the temperature difference at different positions of the heating device 1 from being too large and affecting the consistency of the degree of fixation of the glue at different positions of the battery module. This is beneficial to ensure the uniformity of the temperature at each position of the heating device 1, and further helps to improve the uniformity of the glue curing in the battery module.

[0088] In some embodiments, the second temperature detection component 22 comprises a thermocouple. In some embodiments, the thermocouple is a K-type thermocouple.

[0089] In some embodiments, the first switch component 42 includes a relay. In some implementations, the relay as the first switch component 42 includes a power relay.

[0090] In some embodiments, the temperature control device 5 includes a first temperature controller 51 and a second temperature controller 52 .

[0091] The first temperature controller 51 is signal-connected to the first temperature detection component 21 and the power adjustment device 41, and is configured to adjust the heating power of the heating device 1 through the power adjustment component 41 based on the difference between the temperature detected by the first temperature detection component 21 and the predetermined temperature;

[0092] The second temperature controller 52 is signal-connected to the second temperature sensing component 22, the first switch component 42, and the first temperature controller 51. The second temperature controller 52 is configured to control the first switch component 42 to disconnect the power supply circuit 3 in response to a temperature difference between the first temperature sensing component 2 and the second temperature sensing component 3 being greater than a predetermined difference. When the temperature difference between different locations of the heating device 1 is greater than the predetermined temperature difference, the second temperature controller 52 controls the first switch component 42 to disconnect the power supply circuit 3, thereby providing a layer of protection for the heating device 1.

[0093] The power regulating device 41 and the first switch component 42 are controlled by the first temperature controller 51 and the second temperature controller 52 respectively, which is beneficial to prevent problems with any temperature controller from causing the temperature of the heating device 1 to become uncontrollable, and is beneficial to reducing the probability of unexpected high temperature causing damage to the battery module.

[0094] In some embodiments, the first temperature controller 51 comprises a PID controller. A control deviation is formed based on the difference between the predetermined temperature and the actual temperature of the heating device 1. The deviation is linearly combined using proportional, integral, and differential methods to form a control variable, thereby controlling the heating power of the heated device 1. This helps improve the robustness and reliability of the control system.

[0095] In some embodiments, the power regulating device 41 includes a second switch component. The first temperature controller 51 controls the on and off of the second switch component by continuously detecting the temperature of the heating device 1 detected by the first temperature detecting component 21, thereby controlling the power of the heating device 1 to maintain the temperature of the heating device 1 at a predetermined temperature. In some embodiments, the second switch component includes a solid-state relay.

[0096] In other embodiments, the power regulating device 41 includes one of a voltage regulator and a frequency regulator.

[0097] In other embodiments, the temperature detection unit 2 further includes a third temperature detection component 23 for detecting the temperature of the electric heating element 1a of the heating device 1; the circuit control component 4 includes a third switch component 43. The third switch component 43 is disposed in the power supply circuit 3 and is connected in series with the heating device 1. The temperature control device 5 is signal-connected to the third switch component 43 and the third temperature detection component 23, respectively, and is configured to control the third switch component 43 to cut off the power supply circuit 3 in response to the temperature detected by the third temperature detection component 23 reaching a limit temperature.

[0098] The third temperature sensing component 23 directly detects the temperature of the heating element 1a. When the temperature of the heating element 1a reaches the limit temperature, it is determined that the heating element 1a is abnormally high. The control device 5 controls the third switch component 43 to disconnect the power supply circuit 3, thereby providing an additional layer of protection for the heating device 1. Using the temperature of the heating element 1a detected by the third temperature sensing component 23 as a reference for disconnecting the power supply circuit 3 facilitates timely control of the temperature of the heating device 1, preventing high temperatures from being transmitted to the battery module outside the heating element 1 and causing damage to the battery module.

[0099] In some embodiments, the third temperature detection component 23 includes a thermocouple. In some embodiments, the thermocouple is a K-type thermocouple.

[0100] In some embodiments, the third switch component 43 includes a leakage protector.

[0101] As shown in FIG5 , the heating device 1 includes a plate-shaped component and electric heating elements 1a uniformly arranged within the plate-shaped component. The electric heating elements 1a are electrically connected to a power supply circuit 3. In some embodiments, a third temperature sensing component 23 is embedded within the plate-shaped component and adjacent to the electric heating elements 1a to directly sense the temperature of the electric heating elements 1a.

[0102] In some embodiments, the temperature control device includes a third temperature controller 53. The third temperature controller 53 is signal-connected to the third switch component 43 and the third temperature detection component 23, and is configured to control the third switch component 43 to disconnect the power supply circuit 3 in response to the temperature detected by the third temperature detection component 23 reaching a limit temperature. Providing a separate third temperature controller to control the third switch component 43 helps prevent the other temperature controllers from failing to disconnect the power supply circuit 3 when an abnormality occurs, thereby forming an independent protective measure.

[0103] In some embodiments, a fuse 44 is further provided in the power supply circuit 3 to prevent excessive current from flowing in the power supply circuit 3. In some embodiments, the fuse comprises a fast-blow switch.

[0104] In some embodiments, the third temperature controller 53 includes a temperature alarm module.

[0105] In some embodiments, the heating system further includes a current detection component 6 and a main control device 7. The current detection component 6 is provided in the power supply circuit 3 to detect the current in the power supply circuit 3; the main control device 7 is signal-connected to the current detection component 6 and is configured to issue an alarm message in response to the current detected by the current detection component 6 exceeding a predetermined range, so as to prevent accidents from causing high temperatures in the heating device 1.

[0106] The main control device 7 is signal-connected to the first temperature controller 51 and the second temperature controller 52. In some embodiments, the current detection component 6 is signal-connected to the second temperature controller 52, and the second temperature controller 52 feeds back the current detected by the current detection component 6 to the main control device 7.

[0107] In some embodiments, the master control device comprises a PLC.

[0108] In some embodiments, the heating system of the battery module also includes a human-computer interaction device 8 connected to the temperature control device 5 by signal. See Figure 6. The human-computer interaction device 8 is provided with a first input part 81 for the user to input a predetermined temperature, so that the user can set the predetermined temperature according to different needs. The control device 5 is configured to adjust the temperature of the heating device 1 to the predetermined temperature input by the user by controlling the power regulating device 41.

[0109] In some embodiments, the human-computer interaction device 8 is provided with multiple first input units 81, each configured to allow a user to input a plurality of predetermined temperatures ranging from low to high. The temperature control device 5 is configured to control the heating device 1 to heat sequentially to the predetermined temperatures input by the first input units 81. The maximum predetermined temperature is the final target temperature, and the control device 5 gradually adjusts the temperature of the heating device 1 to the target temperature based on the plurality of predetermined temperatures input. The heating system of this embodiment allows the user to adjust the heating process of the heating device 1 according to actual needs to meet the requirements of different types of battery modules.

[0110] In some embodiments, the human-computer interaction device 8 includes multiple second input units 82 arranged in a one-to-one correspondence with the first input unit 81, and the second input unit 82 is configured to allow the user to input a predetermined time for maintaining a predetermined temperature input in the corresponding first input unit 81, and the temperature control device 5 is configured to control the heating device 1 to maintain the predetermined temperature for a corresponding predetermined time.

[0111] In some embodiments, the human-computer interaction device 8 further includes a third input unit 83 for inputting temperature compensation parameters.

[0112] The control device 5 controls the heating device 1 to heat to the predetermined temperatures input into the plurality of first input parts 81 in sequence through PID regulation, and keeps the temperature at each predetermined temperature for a predetermined time, thereby improving the functional diversity of the heating system.

[0113] In some embodiments, the human-computer interaction device 8 includes a touch screen.

[0114] This embodiment also provides a battery module heating device, which includes a placement device 9 and the above-mentioned battery module heating system. The placement device 9 is configured to carry the battery module; the heating device 1 of the battery module heating system is installed on the placement device 9, see Figures 8 and 9.

[0115] The placement device 9 includes two spaced-apart clamping members 91. The heating device 1 is mounted on the inner surface of the clamping members 91 facing the battery module, with the opposite sides of the battery module facing the two clamping members 91. The heating device 1 is generally plate-shaped. The two clamping members 91 can move relative to each other to clamp the battery module therebetween.

[0116] The placement device 9 also includes a base 93, on which at least one clamping member 91 is movably mounted to clamp the battery module between two clamping members 91. The placement device 9 also includes a first driving unit 94 for driving the clamping members 91 to move relative to the base. In some embodiments, the first driving unit 94 includes a pneumatic cylinder or a hydraulic cylinder.

[0117] The placement device 9 also includes a pressing component 92 for pressing the battery module's terminal. In some embodiments, the placement device 9 also includes a second driving portion 95 for driving the pressing component 92 to press the battery module's terminal, and a transmission mechanism 96 in transmission connection with the second driving portion 95. In some embodiments, the transmission mechanism 96 includes a lead screw and a slider threadedly engaged with the lead screw.

[0118] The plate-shaped component of the heating device 1 is made of a heat-conducting material. In some embodiments, the plate-shaped component is made of aluminum. A silicone pad 97 is provided on the surface of the heating device 1 adjacent to the battery module to prevent the battery module from being burned.

[0119] In some embodiments, the flatness of the heating device is less than 0.2 mm to ensure sufficient contact with the battery module and improve the uniformity of heating the battery module. The parallelism of the heating devices 1 respectively provided on the two clamping members 91 is less than 0.4 mm to ensure that the two heating devices 1 are in sufficient contact with the two opposite sides of the battery module.

[0120] In some embodiments, the placement device 9 further includes a bottom surface supporting the battery module, and the flatness of the bottom surface is less than 0.1 mm.

[0121] The heating device 1 is perpendicular to the bottom surface of the placement device 9, and the perpendicularity between the heating device 1 and the bottom surface is 0.15 mm.

[0122] 7 and 10 , the battery module heating equipment includes multiple heating chambers 10, multiple sub-distribution cabinets 11, and a main distribution cabinet 12. In some embodiments, the heating chambers 10 are provided with multiple layers of placement devices 9 arranged in sequence along a vertical direction, and each layer of placement devices 9 includes multiple layers of placement devices 9 arranged side by side.

[0123] Each heating storage 10 includes at least one placement device 9; multiple sub-distribution cabinets 11 are arranged in a one-to-one correspondence with the multiple heating storages 10, and the sub-distribution cabinets 11 are provided with a temperature control device 5, which is configured to control the temperature of the heating device 1 in the corresponding heating storage 10; the main distribution cabinet 12 is provided with a main control device 7, and the main control device 7 is respectively connected to the temperature control devices 5 in the multiple sub-distribution cabinets 11 by signal.

[0124] As shown in Figure 7, the battery module heating equipment also includes a conveyor line 13 and a first robot 14 located on one side of the conveyor line. The heating reservoir 10 is located on one side of the conveyor line 13. In some embodiments, the first robot 14 is used to transport battery modules on the conveyor line 13 to the heating reservoir 10 for heating and / or to transport battery modules heated in the heating reservoir 10 to the conveyor line 13. The conveyor line 13 transports the heated battery modules downstream.

[0125] Downstream of the heating chamber 10 along the conveyor line 13 is a resting chamber 16 and a second robot 15. The second robot 15 is configured to move heated battery modules that require resting, delivered from the conveyor line 13, to the resting chamber 16. If the heated battery modules do not require resting, the second robot moves them to the turnover platform 17.

[0126] The heating system's power distribution cabinet implements modular, distributed control. The main control device 7 monitors and exchanges data with the control device 5 in each sub-distribution cabinet. The temperature control device 5 in the sub-distribution cabinet 11 controls the heating device 1 in the corresponding heating reservoir.

[0127] This embodiment also provides a method for heating a battery module, the heating comprising:

[0128] Obtaining temperature information of the heating device 1 of the heating battery module;

[0129] Based on the difference between the temperature of the heating device 1 and the predetermined temperature, a command to adjust the heating power of the heating device 1 is issued to adjust the temperature of the heating device 1 toward the predetermined temperature.

[0130] Adjusting the heating power of the heating device 1 based on the difference between the temperature of the heating device 1 and the predetermined temperature is beneficial to improving the temperature stability of the heating device 1, thereby ensuring the stability of the battery module and improving the quality of glue curing in the battery module.

[0131] Heating methods also include:

[0132] Acquire the temperature of a first position of the heating device 1 and the temperature information of a second position different from the first position,

[0133] In response to the difference between the temperature at the first position and the temperature at the second position being greater than a predetermined difference, a command is issued to cut off the power supply circuit 3 that supplies power to the heating device 1 .

[0134] When the temperature difference between different positions of the heating device 1 is greater than the predetermined temperature difference, the power supply circuit 3 is cut off to prevent the temperature difference between different positions of the heating device 1 from being too large and affecting the degree of fixation of the glue at different positions of the battery module. This is beneficial to ensure the uniformity of the temperature at each position of the heating device, and further helps to improve the uniformity of the glue fixation in the battery module.

[0135] The heating method also includes:

[0136] Obtaining temperature information of the electric heating element 1a of the heating device 1;

[0137] In response to the temperature of the electric heating element 1 a being greater than the limit temperature, a command is issued to cut off the power supply circuit 3 that supplies electric energy to the heating device 1 .

[0138] When the temperature of the heating element 1a reaches the limit temperature, the heating element 1a is judged to be abnormally high, and the power supply circuit 3 is then disconnected, thereby providing another layer of protection for the heating device 1. Using the temperature of the heating element 1a as a reference for disconnecting the power supply circuit 3 facilitates timely control of the temperature of the heating device 1, preventing the high temperature from being transmitted to the battery module outside the heating element 1 and causing damage to the battery module.

[0139] The heating method also includes:

[0140] Obtain multiple predetermined temperatures from low to high input by the user;

[0141] A command is issued to adjust the heating power of the heating device 1 so as to heat the temperature of the heating device 1 to a plurality of predetermined temperatures in sequence, with the maximum predetermined temperature being the target temperature.

[0142] Heating methods also include:

[0143] Obtaining a plurality of predetermined times corresponding to a plurality of predetermined temperatures input by a user;

[0144] A command is issued to adjust the heating power of the heating device 1 so as to maintain the heating device 1 at a corresponding predetermined temperature for a predetermined time.

[0145] In this embodiment, the heating process is controlled based on the set heating process information, and the user adjusts the temperature rising process of the heating device 1 according to actual needs to meet the needs of different types of battery modules.

[0146] In this embodiment, a control deviation is formed according to the difference between the predetermined temperature and the actual temperature of the heating device 1, and the deviation is linearly combined by proportion, integration and differentiation to form a control quantity, so as to control the heating power of the heated device 1, which is beneficial to improving the robustness and reliability of the control system.

[0147] Referring to Figure 11, the heating process of the battery module is as follows: after the battery module is transported to the heating storage 10, the clamping component 91 clamps the battery module, and then the control device 5 heats the heating device 1 to a first predetermined temperature according to the user setting, and maintains the heating device 1 at the first predetermined temperature for a first predetermined time based on PID control; then the control device 5 heats the heating device 1 to a second predetermined temperature according to the user setting, and maintains the heating device 1 at the second predetermined temperature for a second predetermined time based on PID control; then the control device 5 heats the heating device 1 to a third predetermined temperature according to the user setting, and maintains the heating device 1 at the third predetermined temperature for a third predetermined time based on PID control.

[0148] From the above, it can be seen that the heating device and heating method of this embodiment can achieve high-precision and accurate control of temperature through PID control, and perform double-sided safe control of the temperature of the heating device 1 through the first switch component 42 and the third switch component 43. The user can set the heating process by himself to achieve high compatibility.

[0149] While the present disclosure has been described with reference to preferred embodiments, various modifications may be made thereto and equivalent components may be substituted without departing from the scope of the present disclosure. In particular, the various technical features described in the various embodiments may be combined in any manner, provided no structural conflicts exist. The present disclosure is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A heating system for a battery module, comprising: A heating device (1) for heating the battery module; A temperature detection unit (2) comprising a first temperature detection component (21) configured to detect the temperature of the heating device (1); a circuit control component (4), comprising a power regulating device (41) provided in a power supply circuit (3) electrically connected to the heating component (1) and regulating the heating power of the heating device (1); and The temperature control device (5) is signal-connected to the first temperature detection component (21) and the power adjustment device (41) respectively and is configured to: Based on the difference between the temperature detected by the first temperature detection component (21) and a predetermined temperature, the circuit control component (4) adjusts the heating power of the heating device (1) to adjust the temperature of the heating device (1) toward the predetermined temperature.

2. The heating system for a battery module according to claim 1, wherein: The temperature detection unit (2) further comprises a second temperature detection component (22) for detecting the temperature of a position different from that of the first temperature detection component (21) on the heating device (1); The circuit control component (4) further comprises a first switch component (42) which is arranged in the power supply circuit (3) and is connected in series with the power regulating device (41) and the heating device (1); The temperature control device (5) is signal-connected to the second temperature detection component (22) and the first switch component (42) respectively and is configured to: in response to the difference between the temperatures detected by the first temperature detection component (21) and the second temperature detection component (22) being greater than a predetermined difference, control the first switch component (42) to cut off the power supply circuit (3).

3. The heating system for a battery module according to claim 2, wherein the temperature control device (5) comprises: A first temperature controller (51) is signal-connected to the first temperature detection component (21) and the power adjustment device (41) respectively, and is configured to detect the temperature of the first temperature detection component (21) based on the first temperature detection component (21). The difference between the detected temperature and the predetermined temperature is used to adjust the heating power of the heating device (1) through the power adjustment component (41); A second temperature controller (52) is signal-connected to the second temperature detection component (22), the first switch component (42) and the first temperature controller (51), respectively. The second temperature controller (52) is configured to control the second switch component (42) to cut off the power supply circuit (3) in response to the difference between the temperatures detected by the first temperature detection component (2) and the second temperature detection component (3) being greater than the predetermined difference.

4. The heating system for a battery module according to claim 3, wherein the first temperature controller (51) comprises a PID controller.

5. A heating system for a battery module according to any one of claims 1 or 4, wherein the power regulating device (41) comprises one of a second switch component, a voltage regulator and a frequency regulator.

6. The heating system for a battery module according to any one of claims 1 to 5, wherein: The temperature detection portion (2) further comprises a third temperature detection component (23) for detecting the temperature of the electric heating element (1a) of the heating device (1); The circuit control component (4) comprises a third switch component (43), the third switch component (43) being arranged in the power supply circuit (3) and connected in series with the heating device (1); and The temperature control device (5) is signal-connected to the third switch component (43) and the third temperature detection component (23), respectively, and is configured to control the third switch component (43) to cut off the power supply circuit (3) in response to the temperature detected by the third temperature detection component (23) reaching a limit temperature.

7. A heating system for a battery module according to claim 6, wherein the temperature control device comprises a third temperature controller (53), the third temperature controller (53) being signal-connected to the third switch component (43) and the third temperature detection component (23), respectively, and being configured to control the third switch component (43) to cut off the power supply circuit (3) in response to the temperature detected by the third temperature detection component (23) reaching the limit temperature.

8. The heating system for a battery module according to any one of claims 1 to 7, further comprising: a current detection component (6), arranged in the power supply circuit (3) to detect the current in the power supply circuit (3); A main control device (7), the current detection component (6) being connected to the main control device (7) by signal, and the main control device (7) being configured to issue an alarm message in response to the current detected by the current component (6) exceeding a predetermined range.

9. The heating system for the battery module according to any one of claims 3 to 7, further comprising a main control device (7), wherein the main control device (7) is signal-connected to the first temperature controller (51) and the second temperature controller (52), respectively.

10. A heating system for a battery module according to any one of claims 1 to 9, further comprising a human-computer interaction device (7) connected to the temperature control device (5) by signal, wherein the human-computer interaction device (8) is provided with a first input unit (81) for a user to input the predetermined temperature.

11. A heating system for a battery module according to claim 10, wherein the human-computer interaction device (8) is provided with a plurality of the first input parts (81), the plurality of the first input parts (81) are configured for a user to input a plurality of the predetermined temperatures from low to high, and the temperature control device (5) is configured to control the heating device (1) to heat to the predetermined temperatures input by the plurality of the first input parts (81) in sequence.

12. A heating system for a battery module according to claim 11, wherein the human-computer interaction device (8) comprises a plurality of second input parts (82) arranged one-to-one corresponding to the first input part (81), the second input part (82) being configured for a user to input a predetermined time for maintaining the predetermined temperature inputted at the corresponding first input part (81), and the temperature control device (5) being configured to control the heating device (1) to maintain the predetermined temperature for the corresponding predetermined time.

13. A heating system for a battery module according to any one of claims 1 to 12, wherein the heating device (1) comprises a plate-like component and electric heating elements (1a) evenly arranged in the plate-like component, and the electric heating elements (1a) are electrically connected to the power supply circuit (3).

14. A heating device for a battery module, comprising: A placement device (9) configured to carry the battery module; The battery module heating system according to any one of claims 1 to 13, wherein the heating device (1) is mounted on the placement device (9).

15. The heating device for a battery module according to claim 14, wherein the placement device (9) comprises two clamping parts (91) arranged at an interval, and the heating device (1) is arranged on the clamping parts (91).

16. The heating device for a battery module according to claim 14 or 15, comprising: A plurality of heating reservoirs (10), each of the heating reservoirs (10) comprising at least one of the placement devices (9); A plurality of sub-distribution cabinets (11) are arranged in one-to-one correspondence with the plurality of heating storages (10), the sub-distribution cabinets (11) being provided with the temperature control device (5), the temperature control device (5) being configured to control the temperature of the heating device (1) in the corresponding heating storage (10); as well as The main power distribution cabinet (12) is provided with a main control device (7), and the main control device (7) is signal-connected to the temperature control devices (5) in the plurality of sub-power distribution cabinets (11).

17. A method for heating a battery module, comprising: Acquiring temperature information of a heating device (1) for heating a battery module; Based on the difference between the temperature of the heating device (1) and a predetermined temperature, a command is issued to adjust the heating power of the heating device (1) so as to adjust the temperature of the heating device (1) toward the predetermined temperature.

18. The heating method according to claim 17, further comprising: acquiring temperature information of a first position of the heating device (1) and temperature information of a second position different from the first position, In response to a difference between the temperature at the first position and the temperature at the second position being greater than a predetermined difference, a command is issued to cut off a power supply circuit (3) that supplies electric energy to the heating device (1).

19. The heating method according to claim 17 or 18, further comprising: Acquiring temperature information of the electric heating element (1a) of the heating device (1); In response to the temperature of the electric heating element (1a) being greater than a limit temperature, a command is issued to cut off a power supply circuit (3) that supplies electric energy to the heating device (1).

20. The heating method according to any one of claims 17 to 19, further comprising: Acquire a plurality of predetermined temperatures from low to high input by a user; A command is issued to adjust the heating power of the heating device (1) so as to heat the temperature of the heating device (1) to a plurality of predetermined temperatures in sequence, the maximum predetermined temperature being the target temperature.

21. The heating method according to claim 20, further comprising: Acquire a plurality of predetermined times input by a user and corresponding to the plurality of predetermined temperatures respectively; A command is issued to adjust the heating power of the heating device (1) so as to keep the heating device (1) at the corresponding predetermined temperature for the predetermined time.

22. A heating method according to any one of claims 17 to 21, wherein a control deviation is formed according to the difference between the predetermined temperature and the actual temperature of the heating device 1, and the deviation is linearly combined by proportion, integration and differentiation to form a control quantity to control the heating power of the heated device (1).

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