Heat exchange device and energy storage device

Abstract

The utility model provides a kind of heat exchange device and energy storage equipment, wherein heat exchange device includes: liquid cooling plate, configuration is carried out heat exchange with battery component;Heating element, install in liquid cooling plate;And controller, configuration is controlled the power coupling state between heating element and external power supply;Power coupling state includes the first conduction state that heating element and external power supply constitute connection path, in the first conduction state, heating element is heated to adjust the temperature of liquid cooling plate to liquid cooling plate.In the embodiment of the present application, heating element can use the electric energy provided by external power supply to heat liquid cooling plate, in this power supply mode, heating element is not limited by the electric quantity of battery component itself, can have higher heating power, to realize the rapid heating of battery component by the heat exchange of liquid cooling plate, improve the charging efficiency of battery component in low temperature environment.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a heat exchange device and an energy storage device. Background Technology

[0002] To ensure that the battery maintains good charging efficiency in low-temperature environments (such as cold regions or winter), the battery's liquid cooling plate is usually equipped with a heating function to regulate the battery temperature.

[0003] In related technologies, the heating function of liquid cooling plates usually depends on the battery's own power, and the heating power is limited, making it difficult to meet the battery's heating requirements. Utility Model Content

[0004] The present invention provides a heat exchange device and an energy storage device to at least partially solve the above-mentioned technical problems.

[0005] In a first aspect, embodiments of the present invention provide a heat exchange device, comprising:

[0006] Liquid cooling plate, configured for heat exchange with battery modules;

[0007] Heating element, mounted on the liquid cooling plate; and

[0008] The controller is configured to control the power coupling state between the heating element and the external power supply; the power coupling state includes a first conduction state in which the heating element and the external power supply form a connection path, and in the first conduction state, the heating element heats the liquid cooling plate to adjust the temperature of the liquid cooling plate.

[0009] By adopting the above scheme, the power coupling state between the heating element and the external power supply is controlled by the controller. In the first conducting state where the heating element and the external power supply form a connection path, the heating element uses the electrical energy provided by the external power supply to heat the liquid cooling plate. Under this power supply method, the heating element is not limited by the power of the battery pack itself and can have a high heating power. Thus, the battery pack can be heated quickly through the heat exchange of the liquid cooling plate, thereby improving the charging efficiency of the battery pack in low-temperature environments.

[0010] Optionally, in some embodiments of this application, the heat exchange device further includes:

[0011] A switching element, the switching element having a first connection terminal, a second connection terminal, and a control terminal;

[0012] Wherein, the first connection end is electrically connected to the heating element, and the second connection end is electrically connected to the external power source or battery assembly;

[0013] The controller is also configured to be electrically connected to the control terminal of the switch to control the on / off state between the first connection terminal and the second connection terminal.

[0014] By adopting the above scheme and configuring the switching device, the heating element can be switched on and off, improving its operational reliability. Simultaneously, the switching device can also adjust the current output to the heating element under the control of the controller, thereby adjusting the heating power of the heating element.

[0015] Optionally, in some embodiments of this application, the heat exchange device further includes:

[0016] A first temperature sensor is configured to collect first temperature data inside the battery assembly;

[0017] The controller is further configured to output a first control signal to the switch based on the first temperature data, so as to control the on / off connection between the first connection terminal and the second connection terminal.

[0018] By adopting the above scheme, the controller can control the switching on and off of the switching components based on the first temperature data, so as to achieve reasonable control of the working state of the heating element and make the working state of the heating element adapt to the first temperature data inside the battery pack.

[0019] Optionally, in some embodiments of this application, the heat exchange device further includes:

[0020] A second temperature sensor is configured to collect second temperature data of the exterior of the battery assembly;

[0021] The controller is further configured to output a second control signal to the switching element based on the second temperature data, so as to control the output current of the switching element.

[0022] By adopting the above scheme, the controller can control the switching on and off of the switching components by combining the overall situation of the first temperature data and the second temperature data, so as to achieve reasonable control of the working state of the heating element, and make the working state of the heating element adapt to the first temperature data inside the battery pack and the second temperature data outside the battery pack.

[0023] Furthermore, the controller can also control the output current of the switching device based on the second temperature data to achieve reasonable control of the heating power of the heating element, so that the heating power of the heating element matches the second temperature data.

[0024] Optionally, in some embodiments of this application, the heat exchange device further includes:

[0025] Adapter;

[0026] A first connector, which is connected to a first connection end via a first connecting line, and a second connecting line, which is connected to the controller; and

[0027] The second connector is connected to the heating element via a third connecting line;

[0028] The first connector and the second connector are respectively inserted into the adapter; the second temperature sensor is installed on the second connector to form an integral unit with the second connector.

[0029] The above solution, achieved through the cooperation of the first connector, the second connector, and the adapter, simplifies the wiring layout.

[0030] Optionally, in some embodiments of this application, the controller is further configured to control the battery coupling state between the heating element and the battery assembly; the battery coupling state includes a second conductive state in which the heating element and the battery assembly form a connection path, and in the second conductive state, the heating element heats the liquid cooling plate to adjust the temperature of the liquid cooling plate.

[0031] The above scheme controls the battery coupling state between the heating element and the battery module through a controller. In the second conductive state, where the heating element and battery module form a connection path, the heating element utilizes the electrical energy provided by the battery module to heat the liquid cooling plate. This heat exchange through the liquid cooling plate achieves rapid heating of the battery module, improving its charging efficiency in low-temperature environments. Furthermore, by controlling the battery coupling state between the heating element and the battery module, selectable power supply schemes are provided for the heating element to meet different heating requirements.

[0032] Optionally, in some embodiments of this application, the liquid cooling plate has: a heat exchange channel;

[0033] At least a portion of the heating element is inserted into the heat exchange channel.

[0034] By adopting the above scheme, at least part of the heating element is inserted into the heat exchange channel, so that the heat provided by the heating element can be transferred to different positions of the liquid cooling plate along with the heat exchange medium, thus avoiding local overheating of the liquid cooling plate.

[0035] Optionally, in some embodiments of this application, at least one end of the liquid cooling plate has an opening that communicates with the heat exchange channel;

[0036] The heating element is inserted into the heat exchange channel through the opening.

[0037] By adopting the above solution and setting the opening, the heating element can be quickly inserted into the heat exchange channel or removed, which facilitates the disassembly, assembly and maintenance of the heating element.

[0038] Optionally, in some embodiments of this application, the heating element includes:

[0039] The connection part has a power connector for electrical connection to one of the external power source and the battery assembly; and

[0040] At least two heating elements are respectively fixedly connected to the connecting part;

[0041] At least two of the heating elements are spaced apart along the extension direction of the connecting element.

[0042] By employing the above scheme, with at least two heating elements, each of which can be inserted into different positions within the heat exchange channel, the uniformity of heating the liquid cooling plate by the heating element is improved. Furthermore, the fact that at least two heating elements are respectively fixedly connected to the connecting part facilitates the assembly and disassembly of the heating element.

[0043] Secondly, embodiments of the present invention provide an energy storage device, including a battery assembly and a heat exchange device as described above.

[0044] Optionally, in some embodiments of this application, the energy storage device further includes:

[0045] The equipment housing has a first accommodating space and a second accommodating space;

[0046] The battery assembly is located in the first accommodating space, and the controller is located in the second accommodating space.

[0047] By adopting the above solution and installing the battery components and controller in different housing spaces, the assembly difficulty of the battery components and controller in the equipment housing can be reduced, and the reliability and safety of the energy storage equipment can be improved.

[0048] Optionally, in some embodiments of this application, at least a portion of the heating element is located outside the device housing.

[0049] By adopting the above solution, since at least part of the heating element is located outside the equipment housing, it is convenient to clamp the heating element, thereby enabling the heating element to be installed and removed without disassembling the equipment housing.

[0050] Optionally, in some embodiments of this application, the heat exchange device further includes:

[0051] A second temperature sensor is configured to collect second temperature data of the exterior of the battery assembly;

[0052] The second temperature sensor is located outside the device housing.

[0053] By adopting the above solution, the second temperature sensor can be located outside the device housing, thus enabling the second temperature sensor to collect ambient temperature more accurately.

[0054] Optionally, in some embodiments of this application, the energy storage device further includes:

[0055] External connectors must be configured to connect to an external power source.

[0056] The battery assembly and the heating element are electrically connected to the external connector, which is installed in the device housing.

[0057] By adopting the above scheme, an external connector is set up to connect to an external power source, thereby enabling the charging of the battery pack and the power supply of the heating element. Attached Figure Description

[0058] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0059] Figure 1 This is a three-dimensional schematic diagram of the heat exchange device and battery assembly provided in an embodiment of this utility model;

[0060] Figure 2 This is a schematic block diagram of the heat exchange device provided in an embodiment of this utility model;

[0061] Figure 3 This is a three-dimensional schematic diagram of the heat exchange device provided in an embodiment of this utility model;

[0062] Figure 4 This is a three-dimensional schematic diagram of the heat exchange device provided in an embodiment of the present invention from another perspective;

[0063] Figure 5 This is an exploded view of the first connector, adapter, and second connector in the heat exchange device provided in an embodiment of this utility model;

[0064] Figure 6 This is an exploded view of the heating element and liquid cooling plate in the heat exchange device provided in an embodiment of this utility model;

[0065] Figure 7 This is a three-dimensional schematic diagram of the heating element, the second temperature sensor, and the second connector in the heat exchange device provided in an embodiment of this utility model;

[0066] Figure 8 This is an exploded view of the heating element, the second temperature sensor, and the second connector in the heat exchange device provided in an embodiment of this utility model;

[0067] Figure 9 This is an exploded view of another heating element and liquid cooling plate in the heat exchange device provided in an embodiment of this utility model;

[0068] Figure 10 This is a three-dimensional schematic diagram of the energy storage device provided in an embodiment of this utility model;

[0069] Figure 11 This is an exploded view of the energy storage device provided in an embodiment of this utility model;

[0070] Figure 12 This is a perspective view of a portion of the energy storage device provided in an embodiment of this utility model;

[0071] Figure 13 This is a top view of a portion of the energy storage device provided in an embodiment of this utility model.

[0072] Explanation of reference numerals in the attached figures:

[0073] 100. Heat exchange device;

[0074] 110. Liquid cooling plate; 111. Heat exchange channel; 112. Opening;

[0075] 120. Heating element; 121. Connecting part; 122. Heating part; 123. Power connector;

[0076] 130. Controller;

[0077] 140. Switching component; 141. First connection terminal; 142. Second connection terminal; 143. Control terminal;

[0078] 151. First temperature sensor; 152. Second temperature sensor;

[0079] 161. Adapter socket; 162. First connector; 163. Second connector; 164. First connecting cable; 165. Second connecting cable; 166. Third connecting cable;

[0080] 10. Energy storage equipment;

[0081] 210. Battery components;

[0082] 220. Equipment housing; 221. First receiving space; 222. Second receiving space;

[0083] 230. External connector; 240. Conductive component;

[0084] 300. External power supply. Detailed Implementation

[0085] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Furthermore, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model.

[0086] In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in its actual use or operating state, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device. Furthermore, in the description of this application, the term "comprising" means "including but not limited to". The terms first, second, third, etc., are used merely as illustrative purposes and do not impose numerical requirements or establish a numerical order.

[0087] In this application, "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. A and B can be singular or plural.

[0088] Firstly, referring to Figure 1 and Figure 2 This application provides a heat exchange device 100, including: a liquid cooling plate 110, a heating element 120 and a controller 130.

[0089] The liquid cooling plate 110 is configured to exchange heat with the battery assembly 210 to adjust the temperature of the battery assembly 210; the heating element 120 is mounted on the liquid cooling plate 110; the controller 130 is configured to control the power coupling state between the heating element 120 and the external power supply 300; the power coupling state includes a first conduction state in which the heating element 120 and the external power supply 300 form a connection path, and in the first conduction state, the heating element 120 heats the liquid cooling plate 110 to adjust the temperature of the liquid cooling plate 110.

[0090] It is understood that the heating element 120 is installed on the liquid cooling plate 110, and there is a heat transfer path between the heating element 120 and the liquid cooling plate 110, so that the heat generated by the heating element 120 can be transferred to the battery assembly 210 through the liquid cooling plate 110; the connection path formed by the heating element 120 and the external power source 300 can be realized by directly connecting the heating element 120 and the external power source 300 or by connecting them intermittently, so that the heating element 120 can obtain electrical energy from the external power source 300.

[0091] Using the above scheme, the controller 130 controls the power coupling state between the heating element 120 and the external power supply 300. In the first conducting state where the heating element 120 and the external power supply 300 form a connection path, the heating element 120 uses the electrical energy provided by the external power supply 300 to heat the liquid cooling plate 110. Under this power supply method, the heating element 120 is not limited by the power of the battery pack 210 itself and can have a high heating power. Thus, the heat exchange of the liquid cooling plate 110 can realize the rapid heating of the battery pack 210 and improve the charging efficiency of the battery pack 210 in a low-temperature environment.

[0092] It should be noted that the external power supply 300 can independently provide power to the heating element 120; or, while the heating element 120 and the external power supply 300 form a connection path, the external power supply 300 is also charging the battery assembly 210.

[0093] In one example of this application, the battery assembly 210 may be part of the vehicle's power battery, and the external power source 300 may be a charging station. By adopting the above solution, the charging efficiency of the vehicle in cold environments can be effectively improved.

[0094] In one example of this application, the controller 130 may be a battery management system (BMS). By reusing the BMS to control the heating element 120, functional integration can be achieved. Of course, the controller 130 may also be a separate controller 130 dedicated to the control of the heating element 120.

[0095] In some embodiments of this application, the power coupling state also includes a first off state in which the heating element 120 is disconnected from the external power supply 300. In the first off state, the heating element 120 is not connected to the current of the external power supply 300. At this time, the heating element 120 can stop working, or the heating element 120 can be connected to the current of the battery assembly 210 for heating.

[0096] In some embodiments of this application, reference is made to Figures 2 to 4 The heat exchange device 100 also includes a switch element 140.

[0097] The switch 140 has a first connection terminal 141, a second connection terminal 142, and a control terminal 143; the first connection terminal 141 is electrically connected to the heating element 120, and the second connection terminal 142 is electrically connected to an external power supply 300 or a battery assembly 210; the controller 130 is also configured to be electrically connected to the control terminal 143 of the switch 140 to control the on / off state between the first connection terminal 141 and the second connection terminal 142.

[0098] It is understood that the switch 140 is connected to the current of the external power supply 300 or the battery assembly 210 through the second connection terminal 142, and the second connection terminal 142 is used to output current when the first connection terminal 141 and the second connection terminal 142 are connected.

[0099] By adopting the above scheme, the switching element 140 can be used to control the switching of the heating element 120, thereby improving the reliability of the heating element 120's operation. Simultaneously, the switching element 140 can also adjust the current output to the heating element 120 under the control of the controller 130, thereby adjusting the heating power of the heating element 120.

[0100] In one example of this application, reference is made to Figures 2 to 4 One switch 140 may be provided. The first connection end 141 of the switch 140 is electrically connected to the heating element 120, and the second connection end 142 is electrically connected to the external power supply 300.

[0101] In another example of this application, two switches 140 may be provided. One switch 140 has its first connection terminal 141 electrically connected to the heating element 120 and its second connection terminal 142 electrically connected to an external power supply 300 to control the power coupling state between the heating element 120 and the external power supply 300. The other switch 140 has its first connection terminal 141 electrically connected to the heating element 120 and its second connection terminal 142 electrically connected to the battery assembly 210 to control the battery coupling state between the heating element 120 and the battery assembly 210.

[0102] In some specific implementations, the switching element 140 may be a relay.

[0103] In some embodiments of this application, the controller 130 is configured to control the heating element 120 to connect to the external power supply 300 when at least one of the first temperature data and the second temperature data satisfies a first preset condition. The first temperature data refers to the temperature data inside the battery assembly 210, and the second temperature data refers to the temperature data outside the battery assembly 210.

[0104] It is understood that the first temperature data can characterize the temperature inside the battery module 210, while the second temperature data can characterize the temperature of the environment in which the battery module 210 is located; the first preset condition can be at least one of the first temperature data being less than or equal to the first temperature threshold and the second temperature data being less than or equal to the second temperature threshold.

[0105] By adopting the above scheme, the heating element 120 can be connected to the external power supply 300 according to at least one of the first temperature data and the second temperature data, so as to achieve reasonable control of the working state (power on and power off) of the heating element 120.

[0106] In one example of this application, the controller 130 is configured to connect the heating element 120 to the external power supply 300 when the first temperature data is less than or equal to a first temperature threshold. The first temperature threshold can be in the range of 15 degrees Celsius to 25 degrees Celsius.

[0107] In another example of this application, the controller 130 is configured to connect the heating element 120 to the external power supply 300 when the second temperature data is less than or equal to a second temperature threshold. The second temperature threshold can be in the range of 15 degrees Celsius to 25 degrees Celsius.

[0108] In another example of this application, the controller 130 is configured to connect the heating element 120 to the external power supply 300 when the first temperature data is less than or equal to a first temperature threshold and the second temperature data is less than or equal to a second temperature threshold. By comprehensively considering the first and second temperature data, this approach allows for precise control of the heating element 120, ensuring that the battery assembly 210 is charged within an optimal temperature range. Specifically, the first temperature threshold can be in the range of 15 degrees Celsius to 25 degrees Celsius, and the second temperature threshold can also be in the range of 15 degrees Celsius to 25 degrees Celsius.

[0109] It should be noted that the first temperature threshold and the second temperature threshold can have the same value; or they can have different values. For example, the first temperature threshold can be 20 degrees Celsius, and the second temperature threshold can be 20 degrees Celsius; or the first temperature threshold can be 20 degrees Celsius, and the second temperature threshold can be 15 degrees Celsius.

[0110] In some embodiments of this application, reference is made to Figure 2 The heat exchange device 100 further includes a first temperature sensor 151. The first temperature sensor 151 is configured to collect first temperature data inside the battery assembly 210, and the first temperature sensor 151 is electrically connected to the controller 130.

[0111] It is understood that the first temperature sensor 151 is disposed inside the battery assembly 210. The controller 130 is also configured to output a first control signal to the switch 140 based at least on the first temperature data to control the on / off state between the first connection terminal 141 and the second connection terminal 142 (hereinafter referred to as the on / off state of the switch 140).

[0112] Using the above scheme, the controller 130 can control the switching element 140 to open and close according to the first temperature data, so as to achieve reasonable control of the working state of the heating element 120, and make the working state of the heating element 120 adapt to the first temperature data inside the battery assembly 210.

[0113] In some specific embodiments, the first temperature sensor 151 can be one of a thermocouple, a thermistor, a resistance temperature detector, or a fiber optic sensor. The first temperature sensor 151 can be powered by the battery assembly 210 to maintain its operation. One or more first temperature sensors 151 can be provided. With multiple first temperature sensors 151, the temperature at different locations within the battery assembly 210 can be obtained, thereby achieving accurate detection of the internal temperature of the battery assembly 210.

[0114] In some embodiments of this application, reference is made to Figure 2 and Figure 3 The heat exchange device 100 further includes a second temperature sensor 152. The second temperature sensor 152 is configured to collect second temperature data of the outside of the battery assembly 210; the second temperature sensor 152 is electrically connected to the controller 130.

[0115] It is understood that the second temperature sensor 152 is arranged outside the battery assembly 210 to obtain the temperature of the environment in which the battery assembly 210 is located. The controller 130 is also configured to output a first control signal to the switch 140 based on the first temperature data and the second temperature data to control the on / off state between the first connection terminal 141 and the second connection terminal 142.

[0116] Using the above scheme, the controller 130 can control the switching on and off of the switch 140 by combining the overall situation of the first temperature data and the second temperature data, so as to achieve reasonable control of the working state of the heating element 120, and make the working state of the heating element 120 compatible with the first temperature data inside the battery assembly 210 and the second temperature data outside the battery assembly 210.

[0117] In some specific embodiments, the second temperature sensor 152 can be one of a thermocouple, a thermistor, a resistance temperature detector, or a fiber optic sensor. One or more second temperature sensors 152 can be provided. With multiple second temperature sensors 152, the external ambient temperature at different locations of the battery assembly 210 can be obtained respectively, thereby achieving accurate detection of the external temperature of the battery assembly 210.

[0118] In some embodiments of this application, the controller 130 may also be configured to output a second control signal to the switch 140 based on the second temperature data, so as to control the output current of the switch 140.

[0119] Using the above scheme, the controller 130 can control the output current of the switch 140 according to the second temperature data to achieve reasonable control of the heating power of the heating element 120, so that the heating power of the heating element 120 matches the second temperature data. For example, it can operate at high power consumption and full load when the second temperature data is less than or equal to 20 degrees Celsius, and operate at low power consumption and low load when the second temperature data is greater than 20 degrees Celsius.

[0120] In some specific embodiments, the second temperature sensor 152 may be powered by the battery assembly 210 to maintain the operation of the second temperature sensor 152; or, a battery specifically designed to power the second temperature sensor 152 may be configured, which may be charged by an external power source 300 or the battery assembly 210.

[0121] In some embodiments of this application, reference is made to Figures 3 to 5 The heat exchange device 100 also includes: an adapter 161, a first connector 162 and a second connector 163.

[0122] The first connector 162 is connected to the first connection end 141 via the first connecting line 164, and the first connector 162 is connected to the controller 130 via the second connecting line 165; the second connector 163 is connected to the heating element 120 via the third connecting line 166; the first connector 162 and the second connector 163 are respectively inserted into the adapter 161; the second temperature sensor 152 is installed on the second connector 163 to form an integral unit with the second connector 163.

[0123] It can be understood that the first connecting line 164 is used to realize the transmission of power supply current between the switch 140 and the first connector 162, so as to supply electrical energy for the operation of the heating element 120; the second connecting line 165 is used to realize the transmission of detection signal between the first connector 162 and the controller 130, so that the controller 130 can obtain the second temperature data of the second temperature sensor 152; the third connecting line 166 is used to realize the transmission of power supply current between the second connector 163 and the heating element 120, so as to supply electrical energy for the operation of the heating element 120.

[0124] The first connector 162 and the second connector 163 are respectively inserted into the adapter 161 to realize the transmission of power supply current and detection signal respectively; the specific structure of the first connector 162, the second connector 163 and the adapter 161 has been described in related technologies and will not be repeated here.

[0125] By adopting the above scheme, the transmission of power supply current and detection signal is achieved through the cooperation of the first connector 162, the second connector 163 and the adapter 161, which simplifies the wiring layout.

[0126] In some embodiments of this application, reference is made to Figure 2 The controller 130 is also configured to control the battery coupling state between the heating element 120 and the battery assembly 210; the battery coupling state includes a second conduction state in which the heating element 120 and the battery assembly 210 form a connection path, and in the second conduction state, the heating element 120 heats the liquid cooling plate 110 to adjust the temperature of the liquid cooling plate 110.

[0127] Using the above scheme, the controller 130 controls the battery coupling state between the heating element 120 and the battery assembly 210. In the second conductive state, where the heating element 120 and the battery assembly 210 form a connection path, the heating element 120 uses the electrical energy provided by the battery assembly 210 to heat the liquid cooling plate 110. This heat exchange through the liquid cooling plate 110 achieves rapid heating of the battery assembly 210, improving its charging efficiency in low-temperature environments. Furthermore, by controlling the battery coupling state between the heating element 120 and the battery assembly 210, selectable power supply schemes are provided for the heating element 120 to meet different heating requirements.

[0128] It should be noted that the battery coupling state also includes a second shutdown state in which the heating element 120 is disconnected from the battery assembly 210. In the second shutdown state, the heating element 120 is not connected to the current of the battery assembly 210. At this time, the heating element 120 can stop working, or the heating element 120 can be connected to the current of the external power supply 300 for heating.

[0129] In some embodiments of this application, the heating power of the heating element 120 in the second conducting state is less than that of the heating element 120 in the first conducting state, thereby satisfying different heating efficiency requirements.

[0130] In some embodiments of this application, the controller 130 is configured to control the heating element 120 to connect to the battery assembly 210 when the first temperature data and the second temperature data meet a second preset condition. The first temperature data refers to the temperature data inside the battery assembly 210, and the second temperature data refers to the temperature data outside the battery assembly 210.

[0131] It is understandable that the second preset condition can be that the first temperature data is less than or equal to the first temperature threshold, and the second temperature data is greater than the second temperature threshold.

[0132] By adopting the above scheme, the connection between the heating element 120 and the battery assembly 210 can be controlled according to the first temperature data and the second temperature data, so as to achieve reasonable control of the working state (power on and power off) of the heating element 120.

[0133] In some embodiments of this application, the heating element 120 may be directly connected to the battery assembly 210 or connected to the battery assembly 210 via the switching element 140.

[0134] In one example of this application, reference is made to Figure 2 The same heating element 120 can be connected to an external power source 300 and a battery assembly 210 respectively under the control of the controller 130 to obtain electrical energy from the external power source 300 or the battery assembly 210.

[0135] In another example of this application, the heat exchange device 100 of this application includes at least two heating elements 120, one of which can obtain electrical energy from an external power source 300 under the control of a controller 130, while the other heating element 120 can obtain electrical energy from a battery assembly 210 under the control of a controller 130.

[0136] The control principle of the heating element 120 in this embodiment of the application will be described below with an example.

[0137] The controller 130 receives a charging signal from the external power supply 300 and acquires the first temperature data and the second temperature data.

[0138] When both the first and second temperature data are greater than 20°C, the controller 130 controls the switch 140 to open, and the heating element 120 does not receive current and does not work.

[0139] When the first temperature data is less than or equal to 20°C and the second temperature data is less than or equal to 20°C, the controller 130 controls the switch 140 to turn on, and the heating element 120 connects to the current of the external power supply 300 and starts heating.

[0140] When the first temperature data is greater than 20°C and the second temperature data is less than or equal to 20°C, the controller 130 controls the switch 140 to open, and the heating element 120 does not work as no current is connected.

[0141] When the first temperature data is less than or equal to 20°C and the second temperature data is greater than 20°C, the controller 130 controls the switch 140 to open, but the heating element 120 receives current from the battery assembly 210 and begins heating.

[0142] It should be noted that the current supplied to the heating element 120 by the external power supply 300 is set to be greater than the current supplied to the heating element 120 by the battery assembly 210. In this way, the heating power of the heating element 120 in the second conduction state is less than that in the first conduction state, thereby meeting different heating efficiency requirements. For example, the heating element can use the external power supply 300 to heat the battery assembly 210 with high power and fast heating, and use the battery assembly 210's own power to heat the battery assembly 210 with low power.

[0143] In some embodiments of this application, reference is made to Figure 6 The liquid cooling plate 110 has a heat exchange channel 111. At least a portion of the heating element 120 is inserted into the heat exchange channel 111.

[0144] It is understood that at least a portion of the heating element 120 is immersed in the heat exchange medium of the heat exchange channel 111 to heat the heat exchange medium, thereby heating the battery assembly 210.

[0145] By adopting the above scheme, at least a portion of the heating element 120 is inserted into the heat exchange channel 111, so that the heat provided by the heating element 120 can be transferred to different positions of the liquid cooling plate 110 along with the heat exchange medium, thereby avoiding local overheating of the liquid cooling plate 110.

[0146] In some embodiments of this application, reference is made to Figure 6 The liquid cooling plate 110 has an opening 112 at at least one end, which is connected to the heat exchange channel 111; the heating element 120 is inserted into the heat exchange channel 111 through the opening 112.

[0147] By adopting the above solution, the opening 112 allows the heating element 120 to be quickly inserted into the heat exchange channel 111 or removed, which facilitates the disassembly and maintenance of the heating element 120.

[0148] In one example of this application, one end of the liquid cooling plate 110 has an opening 112, and correspondingly, the heating element 120 is only disposed at one end of the liquid cooling plate 110.

[0149] In some embodiments of this application, reference is made to Figure 7 and Figure 8 The heating element 120 includes a connecting part 121 and a heating part 122.

[0150] The connecting part 121 has a power connector 123 for electrical connection to one of the external power source 300 and the battery assembly 210; at least two heating parts 122 are respectively fixedly connected to the connecting part 121, and the at least two heating parts 122 are spaced apart along the extending direction of the connecting part 121.

[0151] It is understood that the connecting part 121 is connected to the second connector 163 via the power connector 123 and the third connecting line 166.

[0152] By adopting the above scheme, with the arrangement of at least two heating parts 122, each heating part 122 can be inserted into different positions of the heat exchange channel 111 to improve the uniformity of heating of the liquid cooling plate 110 by the heating element 120. Furthermore, by fixing at least two heating parts 122 to the connecting part 121 respectively, the assembly and disassembly of the heating element 120 can be facilitated.

[0153] In some specific embodiments, a control board may be provided in the connecting part 121, and the working state of each heating part 122 is controlled by the control board. In one example of this application, all heating parts 122 in the heating element 120 operate with the same heating power, and the control method is simple.

[0154] Alternatively, in another example of this application, at least two heating elements 122 in the heating element 120 operate with different heating powers, which can adapt to the temperature differences in different areas of the liquid cooling plate 110, thereby achieving uniform heating of the battery assembly 210.

[0155] In other embodiments of this application, reference is made to Figure 9 Each heating element 120 may include a connecting part 121 and a heating part 122, and each heating element 120 may be provided with a power connector 123, so that each heating element 120 can be independently connected to the switch 140 or the battery assembly 210 to achieve independent heating control and disassembly.

[0156] In some other embodiments of this application, the heating element 120 may also be installed on the outside of the liquid cooling plate 110 to directly heat the liquid cooling plate 110.

[0157] Secondly, referring to Figure 10 and Figure 11This application provides an energy storage device 10, including a battery assembly 210 and a heat exchange device 100 as described above. The energy storage device 10 has all the beneficial effects of the heat exchange device 100 described above, which will not be repeated here.

[0158] In some specific embodiments, the battery assembly 210 may be a conventionally bonded battery module, for example, multiple individual battery cells are bonded together into a battery module using straps, and the energy storage device 10 includes one or at least two battery modules; or, refer to Figure 11 The battery assembly 210 can also eliminate the binding strap, and the individual cells can be directly grouped by bonding or stacking. Multiple individual cells arranged in the front-to-back direction can be regarded as a battery assembly 210.

[0159] In one example of this application, the energy storage device 10 may be the vehicle's power battery.

[0160] In some embodiments of this application, reference is made to Figures 11 to 13 The energy storage device 10 also includes a device housing 220. The device housing 220 has a first receiving space 221 and a second receiving space 222; the battery assembly 210 is located in the first receiving space 221, and the controller 130 is located in the second receiving space 222.

[0161] It is understandable that the first containment space 221 and the second containment space 222 are isolated from each other.

[0162] By adopting the above solution, by installing the battery module 210 and the controller 130 in different housing spaces, the assembly difficulty of the battery module 210 and the controller 130 in the device housing 220 can be reduced, and the reliability and safety of the energy storage device 10 can be improved.

[0163] In some specific embodiments, the switch 140 is also located in the second receiving space 222.

[0164] In some embodiments of this application, reference is made to Figure 10 and Figure 11 At least a portion of the heating element 120 is located outside the device housing 220.

[0165] By adopting the above solution, since at least a portion of the heating element 120 is located outside the equipment housing 220, it is convenient to clamp the heating element 120, thereby enabling the heating element 120 to be installed or removed without disassembling the equipment housing 220.

[0166] In one example of this application, reference is made to Figure 11 and Figure 12The connecting part 121 is located outside the equipment housing 220, while the heating part 122 is inserted into the heat exchange channel 111, so that the heating element 120 can be pulled out from the liquid cooling plate 110.

[0167] In some specific implementation methods, refer to Figure 10 and Figure 11 The equipment housing 220 covers the liquid cooling plate 110, and at least a portion of the heating element 120 is located outside the integral formed by the liquid cooling plate 110 and the equipment housing 220.

[0168] In some embodiments of this application, reference is made to Figure 10 The second temperature sensor 152 is located outside the device housing 220. It can be understood that the second temperature sensor 152 collects the ambient temperature outside the device housing 220 as a second temperature data.

[0169] By adopting the above solution, the second temperature sensor 152 is located outside the device housing 220, so that the second temperature sensor 152 can collect the ambient temperature more accurately.

[0170] In some embodiments of this application, reference is made to Figure 10 The adapter 161 is fixedly connected to the device housing 220, and the device housing 220 provides support for the adapter 161; the first connector 162 is located in the second receiving space 222, and the second connector 163 is located inside the device housing 220.

[0171] By adopting the above solution, at least a portion of the second connector 163 and the heating element 120 are disposed outside the device housing 220, which facilitates the overall assembly and disassembly of the second connector 163 and the heating element 120.

[0172] In some embodiments of this application, reference is made to Figure 3 , Figures 4 to 10 The energy storage device 10 also includes an external connector 230. The external connector 230 is configured to be electrically connected to an external power source 300; the battery assembly 210 and the heating element 120 are respectively electrically connected to the external connector 230; the external connector 230 is mounted on the device housing 220.

[0173] By adopting the above scheme, the external connector 230 is connected to the external power supply 300, thereby enabling the charging of the battery assembly 210 and the power supply of the heating element 120.

[0174] In one example of this application, reference is made to Figure 3 , Figures 4 to 10The energy storage device 10 includes two external connectors 230, one of which serves as a positive connector and the other as a negative connector; the two external connectors 230 are respectively connected to the switch 140 through conductive elements 240.

[0175] In some specific embodiments, the battery assembly 210 and the heating element 120 can be electrically connected to the same external connector 230 or different external connectors 230, which can be selected according to the design requirements of the energy storage device 10.

[0176] Thirdly, this application provides a vehicle including the energy storage device 10 as described above. This vehicle possesses all the beneficial effects of the energy storage device 10, which will not be elaborated upon here.

[0177] In some embodiments of this application, the energy storage device 10 serves as the power battery of the vehicle.

[0178] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A heat exchange device, characterized in that, include: Liquid cooling plate, configured for heat exchange with battery modules; Heating element, mounted on the liquid cooling plate; and The controller is configured to control the power coupling state between the heating element and the external power supply; the power coupling state includes a first conduction state in which the heating element and the external power supply form a connection path, and in the first conduction state, the heating element heats the liquid cooling plate to adjust the temperature of the liquid cooling plate.

2. The heat exchange device according to claim 1, characterized in that, The heat exchange device further includes: A switching element, the switching element having a first connection terminal, a second connection terminal, and a control terminal; Wherein, the first connection end is electrically connected to the heating element, and the second connection end is electrically connected to the external power source or battery assembly; The controller is also configured to be electrically connected to the control terminal of the switch to control the on / off state between the first connection terminal and the second connection terminal.

3. The heat exchange device according to claim 2, characterized in that, The heat exchange device further includes: A first temperature sensor is configured to collect first temperature data inside the battery assembly; The first temperature sensor is electrically connected to the controller.

4. The heat exchange device according to claim 3, characterized in that, The heat exchange device further includes: A second temperature sensor is configured to collect second temperature data of the exterior of the battery assembly; The second temperature sensor is electrically connected to the controller.

5. The heat exchange device according to claim 4, characterized in that, The heat exchange device further includes: Adapter; A first connector, which is connected to a first connection end via a first connecting line, and a second connecting line, which is connected to the controller; and The second connector is connected to the heating element via a third connecting line; The first connector and the second connector are respectively inserted into the adapter; the second temperature sensor is installed on the second connector to form an integral unit with the second connector.

6. The heat exchange device according to any one of claims 1 to 5, characterized in that, The controller is also configured to control the battery coupling state between the heating element and the battery assembly; the battery coupling state includes a second conductive state in which the heating element and the battery assembly form a connection path, and in the second conductive state, the heating element heats the liquid cooling plate to adjust the temperature of the liquid cooling plate.

7. The heat exchange device according to any one of claims 1 to 5, characterized in that, The liquid cooling plate has: a heat exchange channel; At least a portion of the heating element is inserted into the heat exchange channel.

8. The heat exchange device according to claim 7, characterized in that, At least one end of the liquid cooling plate has an opening, which communicates with the heat exchange channel; The heating element is inserted into the heat exchange channel through the opening.

9. The heat exchange device according to any one of claims 1 to 5, characterized in that, The heating element includes: The connection part has a power connector for electrical connection to one of the external power source and the battery assembly; and At least two heating elements are respectively fixedly connected to the connecting part; At least two of the heating elements are spaced apart along the extension direction of the connecting element.

10. An energy storage device, characterized in that, It includes a battery assembly and a heat exchange device as described in any one of claims 1 to 9.

11. The energy storage device according to claim 10, characterized in that, The energy storage device also includes: The equipment housing has a first accommodating space and a second accommodating space; The battery assembly is located in the first accommodating space, and the controller is located in the second accommodating space.

12. The energy storage device according to claim 11, characterized in that, At least a portion of the heating element is located outside the device housing.

13. The energy storage device according to claim 11, characterized in that, The heat exchange device further includes: A second temperature sensor is configured to collect second temperature data of the exterior of the battery assembly; The second temperature sensor is located outside the device housing.

14. The energy storage device according to claim 11, characterized in that, The energy storage device also includes: External connectors must be configured to connect to an external power source. The battery assembly and the heating element are electrically connected to the external connector, which is installed in the device housing.

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