Battery heating and heat preservation device

Abstract

The utility model discloses a battery heating and heat preservation device. The device comprises a first battery module, a second battery module, a first single-pole switch, a second single-pole switch and a boost control module, the negative electrode of the first battery module and a first wiring terminal of the boost control module are both connected with the first end of the first single-pole switch, and the positive electrode of the first battery module and a second wiring terminal of the boost control module are both connected with the first end of the second single-pole switch. The second end of the second single-pole switch is connected with a fourth wiring terminal of the boost control module and the positive electrode of the second battery module. The negative electrode of the second battery module and the third wiring terminal of the boost control module are connected with the second end of the first single-pole switch. Wherein the boost control module is used for regulating and controlling the voltage between the first battery module and the second battery module so as to generate a voltage difference, and the battery is enabled to generate current and disturbance temperature rise through the voltage difference. According to the utility model, the heating efficiency is improved, the space cost and the heating cost are reduced, and the safety and the reliability are also greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, in particular to a battery heating and heat preservation device. Background Art

[0002] Nowadays, power batteries have been widely used in transportation or energy storage fields such as electric vehicles and ships. However, in low temperature environments, the battery's charging and discharging performance is poor, and the battery needs to be heated to a certain temperature before the battery can perform its normal charging and discharging performance.

[0003] Therefore, in order to ensure the performance of batteries in low temperature environments, there are two main existing technical solutions: one is to heat the battery through external heating; the other is to heat the battery through high-frequency pulse heating. However, the first solution may not only have problems with heating efficiency loss or medium heat conduction loss, but also uneven heat conduction; in addition, using external equipment to heat the battery will increase the equipment cost and space cost of the battery system. The second solution uses high-frequency pulses to heat the battery, which will damage the battery itself or the circuit components and poses a great safety risk.

[0004] Therefore, no effective solution has been proposed for the problems of low battery heating efficiency, high heating cost and great safety hazards in low temperature environments in the prior art. Summary of the invention

[0005] The embodiment of the utility model provides a battery heating and heat preservation device, which aims to solve the problems of low battery heating efficiency, high heating cost and great safety hazards in low temperature environments in the prior art methods.

[0006] In a first aspect, an embodiment of the utility model provides a battery heating and heat preservation device, which includes: a first battery module, a second battery module, a first unipolar switch, a second unipolar switch and a boost control module;

[0007] The negative electrode of the first battery module and the first wiring terminal of the boost control module are both connected to the first end of the first single-pole switch, and the positive electrode of the first battery module and the second wiring terminal of the boost control module are both connected to the first end of the second single-pole switch;

[0008] The second end of the second single-pole switch is respectively connected to the fourth terminal of the boost control module and the positive electrode of the second battery module, and the negative electrode of the second battery module and the third terminal of the boost control module are both connected to the second end of the first single-pole switch;

[0009] The boost control module is used to regulate the voltage between the first battery module and the second battery module to generate a voltage difference, and to cause the battery to generate current through the voltage difference to disturb the temperature.

[0010] Furthermore, the first battery module and the second battery module are obtained by splitting an integral battery into two partial batteries.

[0011] Further, the boost control module includes a charger and a bipolar switch;

[0012] The first pin of the charger and the negative electrode of the first battery module are both connected to the first end of the first single-pole switch, and the positive electrode of the first battery module and the second pin of the charger are both connected to the first end of the second single-pole switch;

[0013] The third pin and the fourth pin of the charger are respectively connected to the two poles of the first end of the bipolar switch, and the two poles of the second end of the bipolar switch are respectively connected to the negative pole and the positive pole of the second battery module;

[0014] The bipolar switch is used to disconnect the charger, and the charger is used to regulate the voltage of the first battery module and the second battery module.

[0015] Furthermore, a charging input interface is also included;

[0016] The positive and negative electrodes of the charging input interface are respectively connected to the third pin and the fourth pin of the charger;

[0017] The charging input interface is used to obtain an external power source, and the entire battery is charged through the external power source.

[0018] Furthermore, it also includes a discharge output interface;

[0019] The positive electrode of the first battery module and the first end of the second single-pole switch are both connected to the positive electrode of the discharge output interface, and the negative electrode of the second battery module and the second end of the first single-pole switch are both connected to the negative electrode of the discharge output interface;

[0020] The discharge output interface is used to connect to an external power-consuming device, so that the first battery module and the second battery module discharge to the external power-consuming device as a whole battery.

[0021] Further, a temperature sensor is included;

[0022] The first battery module and the second battery module are connected to the temperature sensor; the temperature sensor is used to detect the temperature of the battery cell.

[0023] Further, it also includes a temperature controller;

[0024] The battery heating and heat preservation device is connected to the temperature controller via a remote control circuit;

[0025] The temperature controller is used to perform insulation and heating determination on the first battery module and the second battery module based on the monitored battery cell temperature and battery operating time, obtain a determination result, and perform corresponding insulation treatment or heating treatment on the first battery module and the second battery module based on the determination result.

[0026] In a second aspect, the utility model further provides a battery heating and heat preservation device, comprising: a first battery module, a second battery module, a first unipolar switch, a second unipolar switch and a boost control module, and a third battery module and a third unipolar switch;

[0027] The negative electrode of the first battery module and the first wiring terminal of the boost control module are both connected to the first end of the first single-pole switch, and the positive electrode of the first battery module and the second wiring terminal of the boost control module are both connected to the first end of the second single-pole switch;

[0028] The second end of the second single-pole switch is respectively connected to the fourth terminal of the boost control module and the positive electrode of the second battery module, and the negative electrode of the second battery module and the third terminal of the boost control module are both connected to the second end of the third single-pole switch and the second end of the first single-pole switch;

[0029] The negative electrode of the third battery module and the first wiring terminal of the boost control module are both connected to the first end of the third single-pole switch, and the positive electrode of the third battery module and the second wiring terminal of the boost control module are both connected to the first end of the second single-pole switch;

[0030] The boost control module is used to regulate the voltage among the first battery module, the second battery module and the third battery module to generate a voltage difference, and to make the battery generate current through the voltage difference to disturb the temperature.

[0031] Furthermore, the first battery module, the second battery module and the third battery module are obtained by splitting an integral battery into three partial batteries.

[0032] Further, the boost control module includes a charger and a bipolar switch;

[0033] The first pin of the charger and the negative electrode of the first battery module are both connected to the first end of the first single-pole switch, and the first pin of the charger and the negative electrode of the third battery module are both connected to the first end of the third single-pole switch;

[0034] The second pin of the charger and the positive electrode of the first battery module are both connected to the first end of the second single-pole switch, and the second pin of the charger and the positive electrode of the third battery module are also connected to the first end of the second single-pole switch;

[0035] The third pin and the fourth pin of the charger are respectively connected to the two poles of the first end of the bipolar switch, and the two poles of the second end of the bipolar switch are respectively connected to the negative pole and the positive pole of the second battery module;

[0036] The bipolar switch is used to disconnect the charger, and the charger is used to regulate the voltage of the first battery module, the second battery module and the third battery module.

[0037] The embodiment of the utility model provides a battery heating and heat preservation device. The device includes a first battery module, a second battery module, a first unipolar switch, a second unipolar switch and a boost control module; the negative pole of the first battery module and the first terminal of the boost control module are both connected to the first end of the first unipolar switch, the positive pole of the first battery module and the second terminal of the boost control module are both connected to the first end of the second unipolar switch; the second end of the second unipolar switch is respectively connected to the fourth terminal of the boost control module and the positive pole of the second battery module, the negative pole of the second battery module and the third terminal of the boost control module are both connected to the second end of the first unipolar switch; wherein the boost control module is used to adjust the voltage between the first battery module and the second battery module to generate a voltage difference, and the voltage difference is used to make the battery generate current and disturb the temperature.

[0038] In the above device, when the battery needs to be heated, the voltage between the multiple battery modules is adjusted by the boost control module, and the voltage difference between the multiple battery modules is used to make the electric energy between the multiple battery modules flow, generate current, and thus disturb the temperature rise. Not only can the energy efficiency loss and heat transfer loss caused by using an external heater to heat the battery be reduced, but also the use of heating components can be reduced, the heating efficiency is improved, the space cost and heating cost are reduced, and the safety and reliability are also greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 A schematic diagram of the circuit structure of a battery heating and heat preservation device provided in an embodiment of the utility model;

[0041] Figure 2 A schematic diagram of the circuit structure of a boost control module in a battery heating and heat preservation device provided by an embodiment of the utility model;

[0042] Figure 3 A schematic diagram of the circuit structure of the battery heating and heat preservation state in the battery heating and heat preservation device provided in an embodiment of the utility model;

[0043] Figure 4 A schematic diagram of the circuit structure of the battery charging state in the battery heating and heat preservation device provided by an embodiment of the utility model;

[0044] Figure 5 A schematic diagram of the circuit structure of the battery power supply state in the battery heating and heat preservation device provided by an embodiment of the utility model;

[0045] Figure 6 A schematic diagram of the circuit structure of another battery heating and heat preservation device provided by an embodiment of the utility model;

[0046] Figure 7 A schematic diagram of the circuit structure of a battery heating and heat preservation state in another battery heating and heat preservation device provided by an embodiment of the utility model;

[0047] Figure 8 A schematic diagram of the circuit structure of a battery charging state in another battery heating and heat preservation device provided by an embodiment of the utility model;

[0048] Fig. 9 A schematic diagram of the circuit structure of the battery in another battery heating and heat preservation device provided by an embodiment of the utility model in the external power supply state of the battery. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0050] The directional terms mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "side", etc., are only for reference to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention. In addition, in the drawings, structures with similar or identical structures are represented by the same reference numerals.

[0051] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0052] It should also be understood that the terms used in the utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in the utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0053] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0054] For any switch mentioned in the embodiments of the present invention, if the switch is horizontally arranged in the circuit diagram, then from left to right are the first end of the switch and the second end of the switch; if the switch is arranged perpendicular to the horizontal direction in the circuit diagram, then from top to bottom are the first end of the switch and the second end of the switch.

[0055] It should be noted that the following two specific embodiments of the present invention only show the minimum example structure in which the battery is divided into an even number or an odd number. When the number of independent batteries in the device or the number of split batteries exceeds two or three, the following minimum example structure can be used for expansion and extension.

[0056] See also Figures 1 to 5 , Figure 1 A schematic diagram of the circuit structure of a battery heating and heat preservation device provided in an embodiment of the utility model; Figure 2 A schematic diagram of the circuit structure of a boost control module in a battery heating and heat preservation device provided by an embodiment of the utility model; Figure 3 A schematic diagram of the circuit structure of the battery heating and heat preservation state in the battery heating and heat preservation device provided in an embodiment of the utility model; Figure 4 A schematic diagram of the circuit structure of the battery charging state in the battery heating and heat preservation device provided by an embodiment of the utility model; Figure 5 A schematic diagram of the circuit structure of the battery in the battery heating and heat preservation device provided in an embodiment of the utility model when the battery supplies power to the outside.

[0057] See also Figure 1The embodiment of the utility model provides a battery heating and heat preservation device, wherein the battery heating and heat preservation device comprises: a first battery module E1, a second battery module E2, a first unipolar switch T1, a second unipolar switch T2 and a boost control module U1; wherein the negative electrode of the first battery module E1 and the first terminal 1 of the boost control module U1 are both connected to the first end of the first unipolar switch T1, and the positive electrode of the first battery module E1 and the second terminal 2 of the boost control module U1 are both connected to the first end of the second unipolar switch T2; the second end of the second unipolar switch T2 is respectively connected to the fourth terminal 4 of the boost control module U1 and the positive electrode of the second battery module E2, and the negative electrode of the second battery module E2 and the third terminal 3 of the boost control module U1 are both connected to the second end of the first unipolar switch T1; wherein the boost control module U1 is used to regulate the voltage between the first battery module E1 and the second battery module E2 to generate a voltage difference, and through the voltage difference, the battery generates a current to disturb the temperature.

[0058] See also Figure 2 and Figure 3 In the embodiment of the utility model, the boost control module U1 includes a charger and a bipolar switch. The first pin 1 of the charger and the negative electrode of the first battery module E1 are both connected to the first end of the first unipolar switch T1, and the positive electrode of the first battery module E1 and the second pin 2 of the charger are both connected to the first end of the second unipolar switch T2; the third pin 3 and the fourth pin 4 of the charger are respectively connected to the two poles of the first end of the bipolar switch EF, and the two poles of the second end of the bipolar switch EF are respectively connected to the negative electrode and the positive electrode of the second battery module E2, so that when the bipolar switch EF is closed, the third pin 3 of the charger is connected to the negative electrode of the second battery module E2, and the fourth pin 4 of the charger is connected to the positive electrode of the second battery module E2. The bipolar switch EF is used to disconnect the charger, and the charger is used to regulate the voltage of the first battery module E1 and the second battery module E2.

[0059] Specifically, Figure 3 As shown, when the number of batteries in the device is even, the first unipolar switch T1 and the second unipolar switch T2 are disconnected, and the bipolar switch EF is closed to turn on the charger; then, the voltage in one battery module is extracted and regulated to another battery module through the DCDC boost module in the charger, so that a preset voltage difference is generated between the first battery module E1 and the second battery module E2, and then the bipolar switch EF is disconnected, and the first unipolar switch T1 and the second unipolar switch T2 are closed. Based on the voltage difference between the two battery modules, the electric energy in the battery module with a higher voltage flows to the battery module with a lower voltage, activating the flow of electrons in the battery to disturb the temperature rise. It should be noted that the electric energy flow process of the above two battery modules mainly includes the following three situations:

[0060] In the first case, the first unipolar switch T1 and the second unipolar switch T2 are disconnected, and the bipolar switch EF is closed to turn on the charger. The DCDC boost module in the charger extracts the voltage in the first battery module E1 into the second battery module E2, so that the voltage of the first battery module E1 is lower than the voltage of the second battery module E2. When the voltage difference between the two battery modules reaches the preset voltage difference, the bipolar switch EF is disconnected, and the first unipolar switch T1 and the second unipolar switch T2 are closed. At this time, the electric energy of the second battery module E2 with a high voltage will flow to the first battery module E1 with a low voltage, activating the flow of electrons in the battery to disturb the temperature rise. When the voltages of the two battery modules are balanced, the above process is continued until the temperature rises to a temperature value suitable for battery insulation or normal discharge of the battery, for example, 10 to 25 degrees.

[0061] In the second case, the first unipolar switch T1 and the second unipolar switch T2 are disconnected, and the bipolar switch EF is closed to turn on the charger. The DCDC boost module in the charger extracts the voltage in the second battery module E2 into the first battery module E1, so that the voltage of the first battery module E1 is higher than the voltage of the second battery module E2. When the voltage difference between the two battery modules reaches the preset voltage difference, the bipolar switch EF is disconnected, and the first unipolar switch T1 and the second unipolar switch T2 are closed. At this time, the electric energy of the first battery module E1 with a high voltage will flow to the second battery module E2 with a low voltage, activating the flow of electrons in the battery to disturb the temperature rise. When the voltages of the two battery modules are balanced, the above process is continued until the temperature rises to a temperature value suitable for battery insulation or normal discharge of the battery.

[0062] In the third case, the first unipolar switch T1 and the second unipolar switch T2 are disconnected, and the bipolar switch EF is closed to turn on the charger. The DCDC boost module in the charger extracts the voltage in the first battery module E1 into the second battery module E2, so that the voltage of the first battery module E1 is lower than the voltage of the second battery module E2. When the voltage difference between the two battery modules reaches the preset voltage difference, the bipolar switch EF is disconnected, and the first unipolar switch T1 and the second unipolar switch T2 are closed; at this time, the electric energy of the second battery module E2 with a high voltage will flow to the first battery module E1 with a low voltage, activating the flow of electrons in the battery to disturb the temperature rise. Generally, the battery temperature has not reached a temperature value suitable for battery insulation or normal discharge of the battery. Therefore, when the voltages of the two battery modules are balanced, The first unipolar switch T1 and the second unipolar switch T2 are disconnected, and the bipolar switch EF is closed to turn on the charger. The DCDC boost module in the charger extracts the voltage in the second battery module E2 into the first battery module E1, so that the voltage of the first battery module E1 is higher than the voltage of the second battery module E2. When the voltage difference between the two battery modules reaches the preset voltage difference again, the bipolar switch EF is disconnected, and the first unipolar switch T1 and the second unipolar switch T2 are closed. At this time, the electric energy of the first battery module E1 with a high voltage will flow to the second battery module E2 with a low voltage, causing the temperature to rise. If the temperature has not reached a temperature value suitable for battery heat preservation or normal discharge of the battery, the above process is continued to cycle until the temperature rises to a temperature value suitable for battery heat preservation or normal discharge of the battery.

[0063] It should be noted that the preset voltage difference in this embodiment needs to be specifically set according to the capacity of the two battery modules. Since the acceptable voltage difference values ​​of different batteries are different, it is necessary to calculate the acceptable voltage difference value of each battery module according to the internal resistance value of the split battery. That is, in the absence of current control, under the influence of this voltage difference value between one battery module and another battery module, the maximum current value generated is within the allowable current value of the battery.

[0064] In addition, it should be noted that in this embodiment, a charger or an improved charger having a DCDC boost module may be used, and related charging equipment having a voltage control module may also be used.

[0065] See also Figure 4The battery heating and heat preservation device provided by the utility model also includes a charging input interface A1B1; the positive and negative poles of the charging input interface A1B1 are respectively connected to the third pin 3 and the fourth pin 4 of the charger; wherein the charging input interface A1B1 is used to obtain an external power source, and the entire battery is charged by the external power source. Specifically, when the number of batteries in the device is an even number, the bipolar switch EF is disconnected, the first single-pole switch T1 and the second single-pole switch T2 are closed, the charging input interface A1B1 is connected, and the charging input interface A1B1 is connected to the positive and negative poles of the external AC power source to obtain the external power source, thereby charging the entire battery by the external power source.

[0066] See also Figure 5 , the battery heating and heat preservation device provided by the utility model also includes a discharge output interface AB. When the number of batteries in the device is an even number, when the battery is static and not working or the battery is supplying power to the outside, the positive pole of the first battery module E1 and the first end of the second monopole switch T2 are both connected to the positive pole of the discharge output interface AB, and the negative pole of the second battery module E2 and the second end of the first monopole switch T1 are both connected to the negative pole of the discharge output interface AB; wherein the discharge output interface AB is used to connect an external electrical device, so that the first battery module E1 and the second battery module E2 are discharged to the external electrical device as a whole battery. The specific example process includes: disconnecting the boost control module U1, closing the first monopole switch T1 and the second monopole switch T2, so that the first battery module E1 and the second battery module E2 become a whole battery, and discharge to the external electrical device through the discharge output interface AB.

[0067] Furthermore, the battery heating and heat preservation device provided in the embodiment of the utility model also includes a temperature sensor; the first battery module E1 and the second battery module E2 in the device are both connected to the temperature sensor; wherein the temperature sensor is used to detect the temperature of the battery cell.

[0068] Furthermore, the battery heating and heat preservation device provided in the embodiment of the utility model also includes a temperature controller; it should be noted that the temperature controller used in this embodiment can be a battery manager or other automatic control equipment that can be used to control the temperature. Among them, the battery heating and heat preservation device is connected to the temperature controller through a remote control line; the temperature controller is used to perform heat preservation and heating judgment on the batteries in the device based on the monitored battery cell temperature and battery running time, obtain the judgment result, and perform corresponding heat preservation or heating treatment on all batteries based on the judgment result.

[0069] Specifically, the control process of achieving battery insulation and heating through a temperature controller includes: obtaining the length of time the battery stops working; if the battery outage time is within a preset period, such as 1-2 days, obtaining the battery cell temperature through a temperature sensor; judging whether the battery needs to be heated based on the monitored battery cell temperature and battery operating time; if the current battery cell temperature is not within the temperature value range of normal battery charge and discharge, sending a command to the temperature controller through a mobile terminal device so that the temperature controller starts the battery heating and insulation device to heat the battery until it is heated to a temperature value suitable for normal battery charge and discharge, and then stops heating; wherein, when making a heating judgment based on the monitored battery cell temperature and battery operating time, due to the influence of the insulation layer, if the battery stops running for too long, such as more than 8 hours, then the battery cell temperature cannot be lower than 10 degrees; if the outage time is short, such as within 4 hours, the battery cell temperature can be set to be no lower than 0 degrees. If the battery is not used for too long, exceeding the preset period, a command is directly sent to the temperature controller through the mobile terminal device, so that the temperature controller starts the battery heating and insulation device to heat the battery until it reaches a temperature value suitable for normal charging and discharging of the battery, and then stops heating.

[0070] Preferably, the first battery module E1 and the second battery module E2 in the utility model can be obtained by splitting an integral battery into two partial batteries in addition to being two independent battery modules as described in the above embodiment. Specifically, in this embodiment, a battery is divided into multiple partial batteries, and a boost control module is connected in the middle of the multiple partial batteries. When the battery needs to be heated, the voltage between the multiple partial batteries is adjusted by the boost control module, and the voltage difference between the multiple partial batteries is used to make the electric energy flow between the multiple partial batteries, generate current, and thus disturb the temperature rise. Among them, when the batteries in the device are split into an even number, the circuit connection method and electric energy flow of the battery heating and heat preservation device are the same as those in the embodiment in which the number of independent batteries in the above device is an even number, so they are not repeated in this embodiment.

[0071] See also Figures 6 to 9 , Figure 6 A schematic diagram of the circuit structure of another battery heating and heat preservation device provided by an embodiment of the utility model; Figure 7 A schematic diagram of the circuit structure of a battery heating and heat preservation state in another battery heating and heat preservation device provided by an embodiment of the utility model; Figure 8 A schematic diagram of the circuit structure of a battery charging state in another battery heating and heat preservation device provided by an embodiment of the utility model; Fig. 9 A schematic diagram of the circuit structure of the battery in another battery heating and heat preservation device provided by an embodiment of the utility model in the external power supply state of the battery.

[0072] See also Figure 6The utility model also provides a battery heating and heat preservation device, which includes: a first battery module E1, a second battery module E2, a first unipolar switch T1, a second unipolar switch T2 and a boost control module U1, and a third battery module E3 and a third unipolar switch T3; specifically, the negative electrode of the first battery module E1 and the first wiring terminal 1 of the boost control module U1 are both connected to the first end of the first unipolar switch T1, the positive electrode of the first battery module E1 and the second wiring terminal 2 of the boost control module U1 are both connected to the first end of the second unipolar switch T2; the second end of the second unipolar switch T2 is respectively connected to the fourth wiring terminal 4 of the boost control module U1 and the second battery module The positive electrode of the second battery module E2 is connected, the negative electrode of the second battery module E2 and the third terminal 3 of the boost control module U1 are connected to the second end of the third single-pole switch T3 and the second end of the first single-pole switch T1; the negative electrode of the third battery module E3 and the first terminal 1 of the boost control module U1 are connected to the first end of the third single-pole switch T3, and the positive electrode of the third battery module E3 and the second terminal 2 of the boost control module U1 are connected to the first end of the second single-pole switch T2; wherein the boost control module U1 is used to regulate the voltage between the first battery module E1, the second battery module E2 and the third battery module E3 to generate a voltage difference, and through the voltage difference, the battery generates a current to disturb the temperature. Similarly, if the third battery module E3 and the third single-pole switch T3 are set on the left side of the first battery module E1 and the first single-pole switch T1, the wiring circuit of the third battery module E3, the third single-pole switch T3 and the boost control module U1 is equivalent to the wiring circuit of the second battery module E2, the second single-pole switch T2 and the boost control module U1.

[0073] See also Figure 2 and Figure 7 The preferred boost control module U1 in the utility model is composed of a charger and a bipolar switch. Among them, the first pin 1 of the charger and the negative electrode of the first battery module E1 are both connected to the first end of the first unipolar switch T1, and the first pin 1 of the charger and the negative electrode of the third battery module E3 are both connected to the first end of the third unipolar switch T3; the second pin 2 of the charger and the positive electrode of the first battery module E1 are both connected to the first end of the second unipolar switch T2, and the second pin 2 of the charger and the positive electrode of the third battery module E3 are both connected to the first end of the second unipolar switch; the third pin 3 and the fourth pin 4 of the charger are respectively connected to the two poles of the first end of the bipolar switch EF, and the two poles of the second end of the bipolar switch EF are respectively connected to the negative electrode and the positive electrode of the second battery module E2; wherein the bipolar switch EF is used to disconnect the charger, and the charger is used to regulate the voltage of the first battery module E1, the second battery module E2 and the third battery module E3.

[0074] Specifically, Figure 7As shown, when the number of batteries in the device is an odd number, when the battery is heated, it can be divided into multiple situations. The first one is to select two battery modules for heating treatment in sequence. For example, the first battery module E1 and the second battery module E2 are first selected to heat the two battery modules, and then the second battery module E2 and the third battery module E3 or the first battery module E1 and the third battery module E3 are selected to heat the two battery modules. The specific example process includes: disconnecting the first unipolar switch T1 and the second unipolar switch T2, closing the third unipolar switch T3 and the bipolar switch EF; then, the voltage in one battery module is extracted and regulated to another battery module through the DCDC boost module in the charger, so that a preset voltage difference is generated between the first battery module E1 and the second battery module E2, and then the bipolar switch EF and the third unipolar switch T3 are disconnected, and the first unipolar switch T1 and the second unipolar switch T2 are closed. Based on the voltage difference between the two battery modules, the electric energy in the battery module with a higher voltage flows to the battery module with a lower voltage, activating the flow of electrons in the battery, so that the internal disturbance of the first battery module E1 and the second battery module E2 is heated up. Next, the first unipolar switch T1 and the third unipolar switch T3 are disconnected, and the second unipolar switch T2 and the bipolar switch EF are closed; then, the voltage in one battery module is extracted and regulated to another battery module through the DCDC boost module in the charger, so that a preset voltage difference is generated between the first battery module E1 and the second battery module E3, and then the bipolar switch EF and the second unipolar switch T2 are disconnected, and the first unipolar switch T1 and the third unipolar switch T3 are closed. Based on the voltage difference between the two battery modules, the electric energy in the battery module with a high voltage flows to the other battery module with a low voltage, activating the flow of electrons in the battery, so that the internal disturbance of the first battery module E1 and the third battery module E3 is heated up. Among them, the flow of electric energy in the two battery modules is the same as the flow of electric energy when the batteries in the device are divided into an even number, which will not be repeated in this embodiment. The second method is to select all the split batteries and divide all the batteries into two groups, so as to perform voltage regulation on the two groups. For example, the first battery module E1, the second battery module E2 and the third battery module E3 are selected, the first battery module E1 is used as the first group, the second battery module E2 and the third battery module E3 are used as the second group, and the battery is heated by adjusting the voltage between the two parts.The specific example process includes: disconnecting the first unipolar switch T1, the second unipolar switch T2 and the third unipolar switch T3, and closing the bipolar switch EF; then, the voltage in one group of batteries is extracted and regulated to the other group of batteries through the DCDC boost module in the charger, so that a preset voltage difference is generated between the first group of batteries and the second group of batteries, and then the bipolar switch EF is disconnected, and the first unipolar switch T1, the second unipolar switch T2 and the third unipolar switch T3 are closed, and based on the voltage difference between the two groups of batteries, the electric energy in the group of batteries with a high voltage flows to the other group of batteries with a low voltage, activating the flow of electrons in the battery, so that the first group of batteries and the second group of batteries are disturbed and heated. Similarly, the flow of electric energy in the two groups of batteries is the same as the flow of electric energy when the batteries in the device are divided into an even number, and will not be repeated in this embodiment.

[0075] It should be noted that the preset voltage difference in this embodiment needs to be specifically set according to the capacity of the two battery modules. Since the acceptable voltage difference values ​​of different batteries are different, it is necessary to calculate the acceptable voltage difference value of each battery module according to the internal resistance value of the battery. That is, in the absence of current control, under the influence of this voltage difference value between one battery module and another battery module, the maximum current value generated is within the allowable current value of the battery.

[0076] In addition, it should be noted that in this embodiment, a charger or an improved charger having a DCDC boost module may be used, and related charging equipment having a voltage control module may also be used.

[0077] See also Figure 8 The battery heating and heat preservation device provided by the utility model also includes a charging input interface A1B1; the positive and negative poles of the charging input interface A1B1 are respectively connected to the third pin 3 and the fourth pin 4 of the charger; wherein the charging input interface A1B1 is used to obtain an external power source, and the entire battery is charged by the external power source. Specifically, when the number of batteries in the device is an odd number, the bipolar switch EF is disconnected, the first single-pole switch T1, the second single-pole switch T2 and the third single-pole switch T3 are closed, the charging input interface A1B1 is connected, and the charging input interface A1B1 is connected to the positive and negative poles of the external AC power source to obtain the external power source, thereby charging the entire battery by the external power source.

[0078] See also Fig. 9The battery heating and heat preservation device provided by the utility model also includes a discharge output interface AB. Specifically, when the number of batteries in the device is an odd number and the battery is static and not working or the battery is supplying power to the outside, the positive electrode of the first battery module E1, the first end of the second monopole switch T2 and the positive electrode of the third battery module E3 are all connected to the positive electrode of the discharge output interface AB, and the negative electrode of the second battery module E2, the second end of the first monopole switch T1 and the third battery module E3 are all connected to the negative electrode of the discharge output interface AB; wherein the discharge output interface AB is used to connect to an external electrical device, so that the first battery module E1, the second battery module E2 and the third battery module E3 are discharged to the external electrical device as a whole battery. The specific discharge process includes: disconnecting the boost control module U1, closing the first monopole switch T1, the second monopole switch T2 and the third monopole switch T3, so that the first battery module E1, the second battery module E2 and the third battery module E3 become a whole battery, and discharge to the external electrical device through the discharge output interface AB.

[0079] Furthermore, the battery heating and insulation device provided in the embodiment of the utility model also includes a temperature sensor; all batteries in the device, including the first battery module E1, the second battery module E2, and the third battery module E3, are connected to the temperature sensor; wherein the temperature sensor is used to detect the temperature of the battery cell.

[0080] Furthermore, the battery heating and heat preservation device provided in the embodiment of the utility model also includes a temperature controller; it should be noted that the temperature controller used in this embodiment can be a battery manager or other automatic control equipment that can be used to control the temperature. Among them, the battery heating and heat preservation device is connected to the temperature controller through a remote control line; the temperature controller is used to perform heat preservation and heating judgment on the batteries in the device based on the monitored battery cell temperature and battery running time, obtain the judgment result, and perform corresponding heat preservation or heating treatment on all batteries based on the judgment result.

[0081] Specifically, the control process of achieving battery insulation and heating through a temperature controller includes: obtaining the length of time the battery stops working; if the battery outage time is within a preset period, such as 1-2 days, obtaining the battery cell temperature through a temperature sensor; judging whether the battery needs to be heated based on the monitored battery cell temperature and battery operating time; if the current battery cell temperature is not within the temperature value range of normal battery charge and discharge, sending a command to the temperature controller through a mobile terminal device so that the temperature controller starts the battery heating and insulation device to heat the battery until it is heated to a temperature value suitable for normal battery charge and discharge, and then stops heating; wherein, when making a heating judgment based on the monitored battery cell temperature and battery operating time, due to the influence of the insulation layer, if the battery stops running for too long, such as more than 8 hours, then the battery cell temperature cannot be lower than 10 degrees; if the outage time is short, such as within 4 hours, the battery cell temperature can be set to be no lower than 0 degrees. If the battery is not used for too long, exceeding the preset period, a command is directly sent to the temperature controller through the mobile terminal device, so that the temperature controller starts the battery heating and insulation device to heat the battery until it reaches a temperature value suitable for normal charging and discharging of the battery, and then stops heating.

[0082] Preferably, the first battery module E1, the second battery module E2 and the second battery module E3 in the utility model can be obtained by splitting an integral battery into three partial batteries in addition to being three independent battery modules as described in the above embodiment. Specifically, in this embodiment, a battery is divided into multiple partial batteries, and a boost control module is connected in the middle of the multiple partial batteries. When the battery needs to be heated, the voltage between the multiple partial batteries is adjusted by the boost control module, and the voltage difference between the multiple partial batteries is used to make the electric energy flow between the multiple partial batteries, generate current, and thus disturb the temperature rise. Among them, when the batteries in the device are split into an even number, the circuit connection method and electric energy flow of the battery heating and heat preservation device are the same as those in the embodiment in which the number of independent batteries in the above device is an odd number, so they are not repeated in this embodiment.

[0083] The battery heating and heat preservation device provided in the embodiment of the utility model refers to Figures 1 to 5The device includes a first battery module E1, a second battery module E2, a first unipolar switch T1, a second unipolar switch T2 and a boost control module U1; wherein the negative electrode of the first battery module E1 and the first terminal 1 of the boost control module U1 are both connected to the first end of the first unipolar switch T1, and the positive electrode of the first battery module E1 and the second terminal 2 of the boost control module U1 are both connected to the first end of the second unipolar switch T2; the second end of the second unipolar switch T2 is respectively connected to the fourth terminal 4 of the boost control module U1 and the positive electrode of the second battery module E2, and the negative electrode of the second battery module E2 and the third terminal 3 of the boost control module U1 are both connected to the second end of the first unipolar switch T1; wherein the boost control module U1 is used to regulate the voltage between the first battery module E1 and the second battery module E2 to generate a voltage difference, and through the voltage difference, the battery generates current to disturb the temperature. In the above device, when the battery needs to be heated, the voltage between the multiple battery modules is adjusted by the boost control module, and the voltage difference between the multiple battery modules is used to make the electric energy between the multiple battery modules flow, generate current, and thus disturb the temperature rise. Not only can the energy efficiency loss and heat transfer loss caused by using an external heater to heat the battery be reduced, but also the use of heating components can be reduced, the heating efficiency is improved, the space cost and heating cost are reduced, and the safety and reliability are also greatly improved.

[0084] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A battery heating and heat preservation device, characterized in that: include: A first battery module, a second battery module, a first unipolar switch, a second unipolar switch and a boost control module; The negative electrode of the first battery module and the first wiring terminal of the boost control module are both connected to the first end of the first single-pole switch, and the positive electrode of the first battery module and the second wiring terminal of the boost control module are both connected to the first end of the second single-pole switch; The second end of the second single-pole switch is respectively connected to the fourth terminal of the boost control module and the positive electrode of the second battery module, and the negative electrode of the second battery module and the third terminal of the boost control module are both connected to the second end of the first single-pole switch; The boost control module is used to regulate the voltage between the first battery module and the second battery module to generate a voltage difference, and to cause the battery to generate current through the voltage difference to disturb the temperature.

2. The battery heating and heat preservation device according to claim 1, characterized in that: The first battery module and the second battery module are obtained by splitting a whole battery into two partial batteries.

3. The battery heating and heat preservation device according to claim 1, characterized in that: The boost control module includes a charger and a bipolar switch; The first pin of the charger and the negative electrode of the first battery module are both connected to the first end of the first single-pole switch, and the positive electrode of the first battery module and the second pin of the charger are both connected to the first end of the second single-pole switch; The third pin and the fourth pin of the charger are respectively connected to the two poles of the first end of the bipolar switch, and the two poles of the second end of the bipolar switch are respectively connected to the negative pole and the positive pole of the second battery module; The bipolar switch is used to disconnect the charger, and the charger is used to regulate the voltage of the first battery module and the second battery module.

4. The battery heating and heat preservation device according to claim 3, characterized in that: It also includes a charging input port; The positive and negative electrodes of the charging input interface are respectively connected to the third pin and the fourth pin of the charger; The charging input interface is used to obtain an external power source, and the entire battery is charged through the external power source.

5. The battery heating and heat preservation device according to claim 1 or 3, characterized in that: Also includes a discharge output interface; The positive electrode of the first battery module and the first end of the second single-pole switch are both connected to the positive electrode of the discharge output interface, and the negative electrode of the second battery module and the second end of the first single-pole switch are both connected to the negative electrode of the discharge output interface; The discharge output interface is used to connect to an external power-consuming device, so that the first battery module and the second battery module discharge to the external power-consuming device as a whole battery.

6. The battery heating and heat preservation device according to claim 1, characterized in that: Also includes a temperature sensor; The first battery module and the second battery module are connected to the temperature sensor; the temperature sensor is used to detect the temperature of the battery cell.

7. The battery heating and heat preservation device according to claim 1, characterized in that: Also includes a temperature controller; The battery heating and heat preservation device is connected to the temperature controller; The temperature controller is used to perform insulation and heating determination on the first battery module and the second battery module based on the monitored battery cell temperature and battery operating time, obtain a determination result, and perform corresponding insulation treatment or heating treatment on the first battery module and the second battery module based on the determination result.

8. A battery heating and heat preservation device, characterized in that: include: A first battery module, a second battery module, a first unipolar switch, a second unipolar switch and a boost control module, and a third battery module and a third unipolar switch; The negative electrode of the first battery module and the first wiring terminal of the boost control module are both connected to the first end of the first single-pole switch, and the positive electrode of the first battery module and the second wiring terminal of the boost control module are both connected to the first end of the second single-pole switch; The second end of the second single-pole switch is respectively connected to the fourth terminal of the boost control module and the positive electrode of the second battery module, and the negative electrode of the second battery module and the third terminal of the boost control module are both connected to the second end of the third single-pole switch and the second end of the first single-pole switch; The negative electrode of the third battery module and the first wiring terminal of the boost control module are both connected to the first end of the third single-pole switch, and the positive electrode of the third battery module and the second wiring terminal of the boost control module are both connected to the first end of the second single-pole switch; The boost control module is used to regulate the voltage among the first battery module, the second battery module and the third battery module to generate a voltage difference, and to make the battery generate current through the voltage difference to disturb the temperature.

9. The battery heating and heat preservation device according to claim 8, characterized in that: The first battery module, the second battery module and the third battery module are obtained by splitting an integral battery into three partial batteries.

10. The battery heating and heat preservation device according to claim 8, characterized in that: The boost control module includes a charger and a bipolar switch; The first pin of the charger and the negative electrode of the first battery module are both connected to the first end of the first single-pole switch, and the first pin of the charger and the negative electrode of the third battery module are both connected to the first end of the third single-pole switch; The second pin of the charger and the positive electrode of the first battery module are both connected to the first end of the second single-pole switch, and the second pin of the charger and the positive electrode of the third battery module are also connected to the first end of the second single-pole switch; The third pin and the fourth pin of the charger are respectively connected to the two poles of the first end of the bipolar switch, and the two poles of the second end of the bipolar switch are respectively connected to the negative pole and the positive pole of the second battery module; The bipolar switch is used to disconnect the charger, and the charger is used to regulate the voltage of the first battery module, the second battery module and the third battery module.

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