Battery discharge device

Abstract

The utility model relates to the technical field of battery recycling, in particular to the field of battery discharging devices. The heating piece is electrically connected with the battery, specifically, the positive electrode of the battery can be connected with one end of the heating piece or the positive electrode of the heating piece through a wire, and the negative electrode of the battery is connected with the other end of the heating piece or the negative electrode of the heating piece, so that the battery and the heating piece are connected in series. When the battery discharges, the heating wire is used as a load in a series circuit to generate heat. Furthermore, a heat recycling box is arranged to be in contact connection with the heating piece, so that heat of the heating piece is transmitted to the heat recycling box, a heat storage medium in the heat recycling box absorbs the heat and reuses the heat, and therefore the situation that the heat is directly discharged into the environment, and resource waste is caused is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of battery recycling, and particularly relates to a battery discharging device. Background Art

[0002] The large-scale application of electrochemical energy storage and power batteries has brought challenges to the retirement recycling and reuse of batteries. Retired or replaced batteries often carry electricity, posing certain safety hazards. Therefore, battery discharging is an essential step in the retirement recycling process. Common discharging methods include physical discharging and chemical discharging. Chemical discharging involves immersing the battery in an electrolyte and relying on the conductive effect of the electrolyte for electrolytic discharging. This method has thorough discharging, but is slow, prone to corrosion, and may cause pollution, unable to meet the rapid discharging requirements. Physical discharging connects the battery to a load with a wire, which has the advantages of fast speed and no leakage.

[0003] Physical discharging is a commonly used battery discharging method at present. However, physical discharging mainly generates heat, and the heat accumulation during discharging poses a threat to battery safety. Moreover, directly discharging the heat generated by the battery into the environment causes waste of resources. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a battery discharging device that can recover the heat generated during battery discharging to avoid waste of resources.

[0005] To achieve the above purpose, the utility model provides a battery discharging device, including:

[0006] A heating element, which is electrically connected to the battery;

[0007] A heat recovery box, which is in contact connection with the heating element and is used for storing a heat storage medium.

[0008] Optionally, a temperature sensor is provided inside the heat recovery box.

[0009] Optionally, a display device is provided on the outer wall of the heat recovery box, and the display device is in communication connection with the temperature sensor.

[0010] Optionally, it further includes a wiring box, and a resistance regulator is provided inside the wiring box. The resistance regulator is electrically connected to the heating element;

[0011] Inside the wiring box, a positive terminal and a negative terminal are provided at one end far from the resistance regulator. The positive terminal and the negative terminal are arranged at intervals, and the positive terminal and the negative terminal are respectively electrically connected to the positive electrode and the negative electrode of the battery.

[0012] Optionally, a resistance adjustment button is provided on the outer wall of the junction box. The resistance adjustment button is electrically connected to the resistance regulator, and the resistance adjustment button is used to adjust the resistance of the heating element.

[0013] Optionally, a heating box is further included. The heating element is arranged in the heating box, and the heating box is communicated with the junction box.

[0014] Optionally, at least three universal wheels are arranged on one side of the heating box close to the ground and are distributed at intervals along the circumferential direction of the heating box.

[0015] Optionally, the positive terminal and the negative terminal are arranged in pairs.

[0016] Optionally, a wiring hole is formed in the junction box.

[0017] Optionally, an opening and closing cover plate is arranged on the junction box.

[0018] The technical solution provided by the present utility model has the following advantages compared with the prior art:

[0019] For the battery discharge device provided by the present utility model, by arranging the heating element to be electrically connected to the battery, specifically, the positive electrode of the battery can be connected to one end of the heating element or the positive electrode of the heating element through a wire, and the negative electrode of the battery can be connected to the other end of the heating element or the negative electrode of the heating element, so that the battery and the heating element form a series connection mode. When the battery discharges, the heating element will generate heat as a load in the series circuit. Further, a heat recovery box is arranged to be in contact connection with the heating element, so that the heat of the heating element is transferred to the heat recovery box, and the heat storage medium in the heat recovery box absorbs the heat and is reused, thereby avoiding direct discharge of heat into the environment and causing waste of resources. Description of the Drawings

[0020] The drawings here are incorporated into the description and form a part of this description, showing the embodiments consistent with the present utility model and used together with the description to explain the principles of the present utility model.

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0022] Figure 1 It is a schematic structural diagram of the battery discharge device described in the embodiment of the present utility model;

[0023] Figure 2 It is a schematic structural diagram of the first perspective of the heat dissipation plate of the battery discharge device described in the embodiment of the present utility model;

[0024] Figure 3 This is a schematic structural diagram of the second perspective of the heat dissipation plate of the battery discharge device according to the embodiment of the present invention.

[0025] Among them, 1. Heating element; 2. Heat recovery box; 3. Temperature sensor; 4. Display device; 5. Junction box; 51. Positive terminal; 52. Wiring hole; 53. Opening and closing cover plate; 54. Negative terminal; 6. Resistance regulator; 61. Resistance adjustment button; 7. Heating box; 8. Universal wheel. Detailed implementation manners

[0026] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the solutions of the present invention will be further described below. It should be noted that, without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0027] Many specific details are set forth in the following description in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0028] The battery discharge device will be described in detail below through specific embodiments:

[0029] As Figure 1 shown, the battery discharge device provided by the present invention includes: a heating element 1, and the heating element 1 is electrically connected to the battery. A heat recovery box 2, the heat recovery box 2 is in contact connection with the heating element 1, and the heat recovery box 2 is used to store a heat storage medium.

[0030] In this embodiment, the heating element 1 can be a heating wire, a heating rod or a conductor with conductive function such as a resistance wire. Taking the heating wire as an example, one end of the heating wire is electrically connected to the positive electrode of the battery, specifically, it can be connected through a wire, and the other end of the heating wire is electrically connected to the negative electrode of the battery, so that the heating wire and the battery form a series circuit. In some other embodiments, the heating element can also be a conductor element with positive and negative electrodes. Then the series connection method is to electrically connect the positive electrode of the heating element to the positive electrode of the battery through a wire, and electrically connect the negative electrode of the heating element to the negative electrode of the battery through a wire, as long as heat can be generated after the heating element and the battery are connected in series.

[0031] Further, a heat recovery tank 2 is provided. In this embodiment, the heat recovery tank 2 can be a container of any shape with heat conduction function. The heat recovery tank 2 is arranged in contact connection with the heating element 1. After the heating element 1 is electrically connected to the battery, the battery discharges, the heating element 1 generates heat, and the heat is transferred to the heat recovery tank 2 after the heat recovery tank 2 contacts the heating element 1. Among them, a heat storage medium, such as water, silicone oil, etc., can be stored in the heat recovery tank 2. Then, the heat storage medium in the heat recovery tank 2 absorbs heat, and the heated water or silicone oil and other heat storage media can be utilized through other channels, avoiding the waste of resources caused by the direct discharge of the heat generated by the heating element 1 into the environment. In some other embodiments, other elements with heat storage functions or heat storage fillers, etc., can also be stored in the heat recovery tank 2, as long as the storage of heat can be achieved.

[0032] In some embodiments, the heating element 1 can be arranged inside the heat recovery tank 2. As Figure 1 shown in the direction, the heating element 1 can be placed on the bottom surface of the heat recovery tank 2, so that the heat storage medium can directly contact the heating element 1, improving the heat transfer efficiency. Of course, it can be understood that the heating element 1 can also be arranged on the side wall or the top surface of the heat recovery tank 2 or on the outer bottom surface of the heat recovery tank 2 or any other position, as long as the heating element 1 contacts the heat recovery tank 2 to achieve heat transfer.

[0033] Furthermore, a plurality of heating elements 1 can be provided. The plurality of heating elements 1 are connected in series with the battery, thereby increasing the heat recovery while improving the battery discharge efficiency. Specifically, the number of the heating elements 1 can be determined according to the battery specifications. Of course, it can be understood that a fuse can be arranged in the series circuit of the heating element 1 and the battery. Specifically, the fuse can be connected in series in the circuit to protect the circuit in real time and avoid potential safety hazards caused by excessive current burning out the circuit.

[0034] The battery discharge device provided by the present utility model electrically connects the heating element to the battery. Specifically, the positive electrode of the battery can be connected to one end of the heating element or the positive electrode of the heating element through a wire, and the negative electrode of the battery is connected to the other end of the heating element or the negative electrode of the heating element, so that the battery and the heating element form a series connection mode. When the battery discharges, the heating wire will generate heat as a load in the series circuit. Further, a heat recovery tank is arranged in contact connection with the heating element, so that the heat of the heating element is transferred to the heat recovery tank, and the heat storage medium in the heat recovery tank absorbs the heat and is reused, thus avoiding the direct discharge of heat into the environment and causing resource waste.

[0035] As Figure 1 shown, a temperature sensor 3 is arranged in the heat recovery tank 2.

[0036] In this embodiment, the temperature sensor 3 can be arranged at the bottom of the heat recovery box 2. Of course, it can be understood that the temperature sensor 3 can also be arranged on the side wall of the heat recovery box 2 or any other position, as long as the temperature change inside the heat recovery box 2 can be monitored. The temperature sensor 3 can be communicatively connected to an external display device, such as a computer or a mobile phone, etc., so as to observe the temperature change in real time, and thus master the discharge process of the battery. According to the temperature change situation, the resistance of the heating wire can be reasonably adjusted, and then the discharge rate can be controlled, so as to realize the fast and complete discharge of the battery. For example, when the temperature continues to rise, it indicates that the battery is in the initial or middle stage of discharge. At this time, the battery is continuously discharging. If the temperature change rate is relatively fast during this process, the internal resistance of the heating wire can be increased to reduce the discharge current. When the temperature change is slow and the battery is in the middle and late stages of discharge, the internal resistance of the heating wire can be appropriately reduced to increase the discharge current until the temperature is in a stable state, indicating that the battery discharge is over. At this time, the battery can be retired and recycled to avoid potential safety hazards.

[0037] Furthermore, a display device 4 can be arranged on the outer wall of the heat recovery box 2. The display device 4 is communicatively connected to the temperature sensor 3, so that the temperature change inside the heat recovery box 2 can be observed more conveniently. Specifically, the display device 4 can be arranged on any side of the outer wall of the heat recovery box 2, or can be arranged on the top surface of the heat recovery box 2, as long as it can be communicatively connected to the temperature sensor 3 and display data in real time. In this embodiment, the display device 4 can also display the temperature rise rate, so as to facilitate observing the discharge rate of the battery and be used to adjust the resistance or power of the heating wire.

[0038] In some embodiments, when the battery power is relatively low, the heat generated during its discharge process is also relatively small and cannot be directly recycled and reused. At this time, the heat recovery box 2 can be replaced with a heat dissipation plate, as Figure 2 and Figure 3 shown. One side of the heat dissipation plate is provided with heat dissipation teeth, and the other side is provided with a heat dissipation fan. The side of the heat dissipation plate with the heat dissipation fan is close to the heating element 1. Specifically, the heat dissipation plate can be fixed on the heating element 1 by using heat dissipation glue. It can be understood that there is no interference between the heat dissipation fan and the heating element 1 during operation. When the heating element 1 generates heat, the heat dissipation fan absorbs the heat and discharges the heat to the external environment through the heat dissipation teeth, avoiding damage caused by excessive local temperature of the discharge device.

[0039] In some other embodiments, the battery discharge device further includes a junction box 5. A resistance regulator 6 is arranged in the junction box 5, and the resistance regulator 6 is electrically connected to the heating element 1.

[0040] In the junction box 5, a positive terminal 51 and a negative terminal 54 are arranged at one end far away from the resistance regulator 6. The positive terminal 51 and the negative terminal 54 are arranged at intervals, and the positive terminal 51 and the negative terminal 54 are respectively electrically connected to the positive electrode and the negative electrode of the battery.

[0041] Specifically, a terminal can be set on the resistance regulator 6. The terminal of the resistance regulator 6 is connected to one end of the heating element 1 through a wire, and the other end of the heating element 1 is electrically connected to the negative electrode of the battery. Thus, a series circuit is formed among the battery, the heating element 1, and the resistance regulator 6. It can be understood that one end of the resistance regulator 6 far from the heating element 1 is electrically connected to the positive terminal 51 and the negative terminal 54. The positive electrode of the battery is connected to the positive terminal 51 through a wire, and the negative electrode of the battery is connected to the negative terminal 54 through a wire. The purpose is to flexibly adjust the resistance of the heating element 1 according to different stages of battery discharge, effectively preventing the resistance wire from heating up too fast and the battery voltage from rebounding after discharge ends. For example, before discharge starts, the resistance is adjusted to the maximum value using the resistance regulator 6, and then adjusted to a suitable resistance value according to battery historical data or battery information to discharge the battery. The temperature and heating rate inside the heat recovery box 2 are observed through the display device 4, and the discharge process is adjusted at any time to ensure battery safety. Near the end of discharge, the resistance value is gradually reduced according to the change in the heating rate to ensure complete discharge of the battery. In this embodiment, the resistance regulator 6 can be a variable resistor, an adjustable resistor, a potentiometer, etc., which can be specifically set according to actual needs.

[0042] Further, a resistance adjustment button 61 is provided on the outer wall of the junction box 5. The resistance adjustment button 61 is electrically connected to the resistance regulator 6, and the resistance adjustment button 61 is used to adjust the resistance of the heating element 1.

[0043] In this embodiment, the resistance adjustment button 61 can be set at any position on the outer wall of the junction box 5 as long as it is convenient for the staff to adjust. It can be understood that multiple resistance adjustment buttons 61 can be set to correspond to the adjustable resistors one by one. In addition, the resistance adjustment button 61 can also be a numeric button or a touch screen button as long as it can achieve controllable adjustment of the resistance.

[0044] Furthermore, the battery discharge device further includes a heating box 7. The heating element 1 is arranged inside the heating box 7, and the heating box 7 is communicated with the junction box 5.

[0045] The heating element 1 can be arranged at any position inside the heating box 7. For example Figure 1 in the shown direction, the heating element 1 can be arranged at the bottom of the heating box 7 or on the side wall of the heating box 7 as long as it can protect the heating element 1. It can be understood that Figure 1 in the shown horizontal cross-section, the cross-sectional area of the heating box 7 is larger than that of the heat recovery box 2 so that the heating element 1 is in contact connection with the heat recovery box 2. Setting the heating box 7 to be communicated with the junction box 5 has two advantages. On the one hand, it is convenient to electrically connect the heating element 1 and the resistance regulator 6. On the other hand, it is convenient to integrally form the heating box 7 with the junction box 5 during processing, improving work efficiency.

[0046] In some embodiments, at least three universal wheels 8 are provided on one side of the heating box 7 close to the ground and are distributed at intervals along the circumferential direction of the heating box 7.

[0047] According to the fact that three points determine a plane, the number of the universal wheels 8 can be three or more, which can be specifically set according to the needs of the device. Therefore, the battery discharging device can be moved to different sites for use as needed. Of course, a locking mechanism can also be provided on the universal wheels 8 to lock the universal wheels 8 during the discharging process to prevent the device from moving randomly and ensure the stability and high efficiency of the discharging process.

[0048] In some other embodiments, the positive terminals 51 and the negative terminals 54 are provided in pairs, which means that there are multiple positive terminals 51 and multiple negative terminals 54, and the numbers of the positive terminals 51 and the negative terminals 54 correspond one by one. Therefore, not only can the battery cells be discharged, but also the battery modules or multiple battery cells can be discharged simultaneously to improve the working efficiency.

[0049] Furthermore, wiring holes 52 can be formed in the wiring box 5. The wiring holes 52 can be formed at any position of the wiring box 5, and the shape of the wiring holes 52 can be any shape as long as the wires can pass through and be connected to the terminals. In this embodiment, the wiring holes 52 are circular, and one pair of terminals corresponds to one wiring hole 52, that is, one wiring hole 52 corresponds to one positive terminal 51 and one negative terminal 54. A plurality of wiring holes 52 are provided on the side wall of the wiring box 5 away from the heating element 1, so as to facilitate leading out the wires to be connected to the battery.

[0050] Even further, an opening and closing cover plate 53 is provided on the wiring box 5.

[0051] The opening and closing cover plate 53 can be provided at any position of the wiring box 5 as long as it is convenient to connect the wires to the terminals after the opening and closing cover plate 53 is opened. In this embodiment, as shown in the position, the opening and closing cover plate 53 is provided directly above the terminals. When wiring is required, only need to open the opening and closing cover plate 53 to connect the wires to the positive and negative terminals, and then close the opening and closing cover plate 53 to ensure the safety of the discharging process. Specifically, the size and the opening direction of the opening and closing cover plate 53 can be set according to actual needs. Figure 1 As shown in the figure, the opening and closing cover plate 53 is provided directly above the terminals. When wiring is required, only need to open the opening and closing cover plate 53 to connect the wires to the positive and negative terminals, and then close the opening and closing cover plate 53 to ensure the safety of the discharging process. Specifically, the size and the opening direction of the opening and closing cover plate 53 can be set according to actual needs.

[0052] It should be noted that relational terms such as "first" and "second" in this text are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0053] The above are only specific embodiments of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments described herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A battery discharge device, characterized in that: include: A heating element (1), wherein the heating element (1) is electrically connected to the battery; A heat recovery box (2), the heat recovery box (2) being in contact with and connected to the heating element (1), and the heat recovery box (2) being used to store a heat storage medium; A junction box (5), wherein a resistance regulator (6) is arranged inside the junction box (5), and the resistance regulator (6) is electrically connected to the heating element (1); A positive terminal (51) and a negative terminal (54) are provided at one end of the junction box (5) away from the resistance adjuster (6), the positive terminal (51) and the negative terminal (54) are arranged at intervals, and the positive terminal (51) and the negative terminal (54) are electrically connected to the positive electrode of the battery and the negative electrode of the battery respectively.

2. The battery discharge device according to claim 1, characterized in that: A temperature sensor (3) is provided in the heat recovery box (2).

3. The battery discharge device according to claim 2, characterized in that: The outer wall of the heat recovery box (2) is provided with a display device (4), and the display device (4) is communicatively connected with the temperature sensor (3).

4. The battery discharge device according to claim 1, characterized in that: The outer wall of the junction box (5) is provided with a resistance adjustment button (61), the resistance adjustment button (61) is electrically connected to the resistance adjuster (6), and the resistance adjustment button (61) is used to adjust the resistance of the heating element (1).

5. The battery discharge device according to claim 1, characterized in that: It also comprises a heating box (7), the heating element (1) is arranged in the heating box (7), and the heating box (7) is connected to the connection box (5).

6. The battery discharge device according to claim 5, characterized in that: The heating box (7) is provided with at least three universal wheels (8) spaced apart along the circumference of the heating box (7) on a side close to the ground.

7. The battery discharge device according to claim 1, characterized in that: The positive terminal (51) and the negative terminal (54) are arranged in pairs.

8. The battery discharge device according to claim 7, characterized in that: The junction box (5) is provided with a wiring hole (52).

9. The battery discharge device according to any one of claims 1 to 8, characterized in that: The junction box (5) is provided with an opening and closing cover plate (53).

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