CN212229493U - Battery self-heating device and vehicle with same - Google Patents
Battery self-heating device and vehicle with same Download PDFInfo
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- CN212229493U CN212229493U CN202020964785.5U CN202020964785U CN212229493U CN 212229493 U CN212229493 U CN 212229493U CN 202020964785 U CN202020964785 U CN 202020964785U CN 212229493 U CN212229493 U CN 212229493U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The utility model discloses a battery self-heating device and vehicle that has it. The battery self-heating device includes: heating circuit, the control module who is connected with heating circuit. The heating circuit comprises a first power switch tube, a first energy storage element and a second energy storage element which are connected with the first power switch tube, a second power switch tube which is connected with the first energy storage element, and diodes which are respectively connected with the first energy storage element and the first power switch tube, wherein the first power switch tube is connected with one end of the battery pack, and the second power switch tube and the second energy storage element are connected with the other end of the battery pack; the control module controls the on-off of a first power switch tube and a second power switch tube in the heating circuit, so that the first energy storage element, the second energy storage element and the battery pack are charged and discharged in a reciprocating mode through the heating circuit, and the generated alternating current enables the internal resistance of the battery pack to generate heat. The utility model discloses can shorten battery intensification time under the low temperature environment greatly.
Description
Technical Field
The utility model relates to an electric automobile technical field especially relates to a battery self-heating device and vehicle that has this battery self-heating device.
Background
The power battery is used as a power source and is widely used in energy systems of pure electric series and hybrid power train types. However, the external characteristics of the power battery are affected by the low-temperature environment temperature, the endurance mileage is reduced, lithium deposition occurs during the dc charging process, permanent damage is caused to the battery, and the service life and capacity of the battery are reduced. Therefore, in a low-temperature environment, before the battery is used, especially before low-temperature charging, the battery needs to be heated to raise the temperature of the battery cell, so that the charging capability of the battery returns to normal along with the temperature rise.
In the related art, a PTC (Positive Temperature Coefficient) heating scheme is generally adopted, that is, a PTC heating water path is used to circularly transfer heat to a battery through the water path, so that the Temperature of the battery module increases from the outer casing to the inner casing and from the outer casing to the inner casing, and a schematic diagram of the PTC heating scheme is shown in fig. 1. However, the battery is indirectly heated by the PTC heating water path, and the temperature rise time is long, which results in low heat exchange efficiency.
Disclosure of Invention
The present invention aims at solving at least one of the above-mentioned technical problems to a certain extent.
In a first aspect, an embodiment of the present invention provides a battery self-heating device, including:
the heating circuit comprises a first power switch tube, a first energy storage element and a second energy storage element which are connected with the first power switch tube, a second power switch tube which is connected with the first energy storage element, and diodes which are respectively connected with the first energy storage element and the first power switch tube, wherein the first power switch tube is connected with one end of a battery pack, and the second power switch tube and the second energy storage element are connected with the other end of the battery pack;
and the control module controls the on-off of the first power switch tube and the second power switch tube in the heating circuit so as to enable the first energy storage element, the second energy storage element and the battery pack to perform cyclic and reciprocating mutual charging and discharging through the heating circuit, and the generated alternating current enables the internal resistance of the battery pack to generate heat.
The utility model discloses battery self-heating device, the break-make of first power switch pipe and second power switch pipe among the accessible control module control heating circuit to make first energy storage component, second energy storage component and group battery carry out the reciprocal charge-discharge each other of circulation through heating circuit, the alternating current who produces makes the internal resistance of group battery produce the heat, thereby reach the effect that the group battery self-heated. The utility model discloses used device quantity reduces, and need not external heating resistor, only leans on group battery self internal resistance to generate heat, makes electric core temperature rise, because utilize the internal resistance of group battery to produce thermal reason and make the battery heat up rapidly, can shorten battery intensification time under the low temperature environment greatly, makes the battery can resume the charging ability in short time.
In addition, the battery self-heating device according to the above embodiment of the present invention may further have the following additional technical features:
the first end of the first power switch tube is connected to one end of a battery pack, the second end of the first power switch tube is connected to the first end of the first energy storage element and the first end of the second energy storage element respectively, the second end of the first energy storage element is connected to the first end of the second power switch tube, the second end of the second power switch tube is connected to the other end of the battery pack, the second end of the second energy storage element is connected to the other end of the battery pack, the first end of the diode is connected to the second end of the first energy storage element, and the second end of the diode is connected to the first end of the first power switch tube.
The first power switch tube, the second power switch tube, the first energy storage element and the second energy storage element form a charging circuit; the first energy storage element, the second energy storage element and the diode form an energy feedback circuit.
When the control module controls the first power switch tube and the second power switch tube to be conducted, the battery pack charges the first energy storage element and the second energy storage element through the charging circuit; when the control module controls the first power switch tube and the second power switch tube to be switched off, the first energy storage element and the second energy storage element feed back energy to the battery pack through the energy feedback circuit.
The battery self-heating device further comprises:
the temperature sensor is respectively connected with the battery pack and the control module, and is used for measuring the temperature of the battery pack and sending the measured temperature of the battery pack to the control module; the control module controls the heating circuit to work according to the temperature of the battery pack measured by the temperature sensor.
The control module controls the first power switch tube and the second power switch tube to switch between an on state and an off state based on a target pulse width modulation control signal when the temperature of the battery pack measured by the temperature sensor is smaller than a first threshold value, and controls the heating circuit to stop working when the temperature of the battery pack measured by the temperature sensor is larger than a second threshold value; wherein the second threshold is greater than or equal to the first threshold.
The first power switch tube and the second power switch tube are IGBT tubes.
The first energy storage element is an inductor.
The second energy storage element is a capacitor.
In a second aspect, an embodiment of the present invention further provides a vehicle, which includes the battery self-heating apparatus in the above-mentioned embodiment of the first aspect.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a diagram illustrating an example of heating a battery pack by a PTC and a water circuit in the related art.
Fig. 2 is a first structural block diagram of a battery self-heating device according to an embodiment of the present invention.
Fig. 3 is a first circuit example of the battery self-heating device according to the embodiment of the present invention.
Fig. 4 is a second circuit example of the battery self-heating device according to the embodiment of the present invention.
Fig. 5 is a second structural block diagram of a self-heating device for a battery according to an embodiment of the present invention.
Fig. 6 is a first exemplary diagram illustrating a flow direction of energy between the heating circuit and the battery pack according to an embodiment of the present invention.
Fig. 7 is a second exemplary diagram illustrating a flow direction of energy between the heating circuit and the battery pack according to an embodiment of the present invention.
Fig. 8A is an exemplary diagram of pwm control signals for the first power switch T1 and the second power switch T2 according to an embodiment of the present invention.
Fig. 8B is an exemplary diagram of ac current values on the battery pack, the capacitor, and the inductor according to an embodiment of the present invention.
Fig. 9 is a schematic structural diagram of a vehicle according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
The following describes a battery self-heating apparatus and a vehicle having the same according to embodiments of the present invention with reference to the drawings.
Fig. 2 is a schematic structural diagram of a battery self-heating device according to an embodiment of the present invention. As shown in fig. 2, the battery self-heating apparatus 100 may include: a heating circuit 10 and a control module 20. Wherein, this heating circuit 10 can include: the energy storage device comprises a first power switch tube T1, a first energy storage element 11 and a second energy storage element 12 connected with the first power switch tube T1, a second power switch tube T2 connected with the first energy storage element 11, and a diode D respectively connected with the first energy storage element 11 and the first power switch tube T1. The first power switch tube T1 is connected to one end of the battery B1, and the second power switch tube T2 and the second energy storage element 12 are connected to the other end of the battery B1.
The control module 20 may control on/off of the first power switch T1 and the second power switch T2 in the heating circuit 10, so that the first energy storage element 11, the second energy storage element 12, and the battery B1 are charged and discharged reciprocally through the heating circuit 10, and the generated ac current causes the internal resistance of the battery B1 to generate heat.
Fig. 3 is a first circuit example of the battery self-heating device according to the embodiment of the present invention. A first end of the first power switch tube T1 is connected to one end of the battery pack B1, a second end of the first power switch tube T1 is connected to the first end of the first energy storage element 11 and the first end of the second energy storage element 12, respectively, a second end of the first energy storage element 11 is connected to a first end of the second power switch tube T2, a second end of the second power switch tube T2 is connected to the other end of the battery pack B1, a second end of the second energy storage element 12 is connected to the other end of the battery pack B1, a first end of the diode D is connected to the second end of the first energy storage element 11, and a second end of the diode D is connected to the first end of the first power switch tube T1. As shown in fig. 3, the first power switch T1, the second power switch T2, the first energy storage element 11, and the second energy storage element 12 may form a charging circuit; the first energy storage element 11, the second energy storage element 12 and the diode D may constitute an energy feedback circuit.
In the embodiment of the present invention, the first power switch tube T1 and the second power switch tube T2 may be IGBT tubes; the first energy storage element 11 may be an inductor L; the second energy storage element 12 may be a capacitor C. For example, taking the first power switch tube and the first power switch tube as IGBT tubes, the first energy storage element as an inductor, and the second energy storage element as a capacitor as an example, the circuit connection relationship between each element in the heating circuit and the battery pack can be as shown in fig. 4. The drain of the first power switch tube T1 is connected to the anode of the battery B1, the source of the first power switch tube T1 is connected to the first end of the inductor L and the first end of the capacitor C, respectively, the second end of the inductor L is connected to the drain of the second power switch tube T2, the source of the second power switch tube T2 is connected to the cathode of the battery B1, the second end of the capacitor C is connected to the cathode of the battery B1, the anode of the diode D is connected to the second end of the inductor L, and the cathode of the diode D is connected to the drain of the first power switch tube T1. As shown in fig. 4, the first power switch T1, the second power switch T2, the inductor L and the capacitor C may form a charging circuit; the inductor L, the capacitor C and the diode D may constitute an energy feedback circuit.
In the embodiment of the present invention, when the control module 20 controls the first power switch T1 and the second power switch T2 to be turned on, the battery B1 charges the first energy storage element 11 and the second energy storage element 12 through the charging circuit; when the control module 20 controls the first power switch T1 and the second power switch T2 to turn off, the first energy storage element 11 and the second energy storage element 12 feed back energy to the battery B1 through the energy feed back circuit. That is, the control module 20 can control the first power switch T1 and the second power switch T2 to be turned on, and at this time, the battery B1 is chargedThe electric circuit charges the first energy storage element 11 and the second energy storage element 12, and the first energy storage element 11 and the second energy storage element 12 obtain large current instantly after being charged. The control module 20 may control the first power switch T1 and the second power switch T2 to turn off, and at this time, the first energy storage element 11 and the second energy storage element 12 feed back energy to the battery B1 through the energy feedback circuit, that is, the energy stored in the first energy storage element 11 and the second energy storage element 12 is fed back to the battery B1 through the diode D in the energy feedback circuit. In the whole process, the alternating current which circulates and reciprocates in the battery pack flows through the battery pack, so that the internal resistor of the battery pack rapidly heats, and the power P is I2And R (wherein, I takes an alternating current effective value, and R is the internal resistance of the battery pack), thereby achieving the effect of self-heating of the battery. It can be seen that the diode D described above acts as a free-wheeling current in the circuit.
Optionally, in an embodiment of the present invention, as shown in fig. 5, the battery self-heating apparatus 100 may further include: a temperature sensor 30. Wherein, the temperature sensor 30 is connected with the battery pack B1 and the control module 20, respectively, and the temperature sensor 30 can be used for measuring the temperature of the battery pack B1 and sending the measured temperature of the battery pack B1 to the control module 20. Wherein, the control module 20 can control the heating circuit 10 to operate according to the temperature of the battery pack B1 measured by the temperature sensor 30. In the present invention, the temperature of the battery B1 measured by the temperature sensor 30 may be the average temperature of the battery B1, which may be obtained by averaging the temperatures of all the battery cells in the battery B1.
For example, when receiving the temperature of the battery pack B1 sent by the temperature sensor 30, the control module 20 may determine whether the battery pack B1 needs to be self-heated currently according to the current temperature of the battery pack B1, for example, when determining that the current temperature of the battery pack B1 is less than the first threshold, the battery pack B1 may be considered to be in a low-temperature environment currently, and at this time, the control module may control the first power switch T1 and the second power switch T2 to switch between the on state and the off state based on the target pwm control signal, so that the first energy storage element 11, the second energy storage element 12, and the battery pack B1 are charged and discharged reciprocally through the heating circuit 10, and the generated ac current generates heat in the internal resistance of the battery pack B1, thereby achieving the effect of self-heating of the battery.
During the process of controlling the first power switch T1 and the second power switch T2 to switch between the on state and the off state through the control module 20, the temperature sensor 30 may measure the temperature of the battery pack B1 in real time and transmit the measured temperature to the control module 20. When the control module 20 determines that the current temperature of the battery pack B1 is greater than the second threshold (where the second threshold is greater than or equal to the first threshold), the heating circuit 10 may be controlled to stop working, that is, the temperature of the battery pack B1 is already raised at this time, and the temperature of the battery pack core can meet the usage requirement, so that the charging and discharging capability of the battery pack is recovered to normal along with the temperature rise. That is, when the temperature T of the battery pack reaches the second threshold, i.e., the preset temperature T1, the control module may control the heating circuit to stop operating, and the charging and discharging process for the battery pack is terminated.
The embodiment of the utility model provides an in, battery self-heating device realizes can be as follows to the theory of operation of the self-heating of group battery: in the first stage, the control module controls the first power switch tube and the second power switch tube to be conducted, at the moment, the battery pack can charge the capacitor C through a loop formed by the second power switch tube and the capacitor C, and charges the inductor L through a loop formed by the second power switch tube, the inductor L and the first power switch tube. For example, as shown in fig. 6, an example diagram of the energy flow direction between the heating circuit and the battery pack, wherein the arrows indicate the energy flow direction. The first power switch tube T1 and the second power switch tube T2 are turned on simultaneously, and control signals of the two are in phase, at this time, the battery pack B1 charges the capacitor C through a loop formed by the second power switch tube and the capacitor C, and charges the inductor L through a loop formed by the second power switch tube, the inductor L and the first power switch tube. Setting the duty ratio of the first power switch tube T1 and the second power switch tube T2 as D, setting the switching period as T, and setting the on-time of the first power switch tube T1 and the second power switch tube T2 as D × T, when the on-time of the first power switch tube T1 and the second power switch tube T2 reaches D × T, the control module controls the first power switch tube and the second power switch tube to be turned off at the same time, that is, enters the second stage.
In the second stage, during the turn-off time of the first power switch T1 and the second power switch T2, the inductor L and the capacitor C feed back energy to the battery B1 through a loop consisting of the inductor L, the capacitor C, the diode D, and the battery B1, i.e., the energy in the inductor L and the capacitor C is fed back to the battery B1, and there is a current flowing through the battery, wherein the current flowing direction can be as shown in fig. 7, wherein arrows indicate the energy flowing direction. When the turn-off duration of the first power switch tube T1 and the second power switch tube T2 reaches (1-D) × T, the control module controls the first power switch tube and the second power switch tube to be simultaneously turned on, that is, the first stage is entered again, so that the cycle is repeated, and in the process, alternating current can be generated in the battery pack. The control module can control the on and off of the first power switch tube T1 and the second power switch tube T2 based on the target pulse width modulation control signal. For example, as shown in fig. 8A, an exemplary graph of the pwm control signals for the first power switch T1 and the second power switch T2 is shown, where D × T represents the on duration of the first power switch T1 and the second power switch T2, and (1-D) × T represents the off duration of the first power switch T1 and the second power switch T2.
It can be understood that, since the capacitor that is not charged is in a short circuit state at the moment of conducting, a relatively large current flows through the capacitor. The peak current can increase the effective value of the alternating current in the charge-discharge cycle. For example, as shown in fig. 8B, which is an exemplary diagram of ac current values on the battery pack, the capacitor and the inductor, respectively, it can be seen that the battery pack side generates an ac current by turning on and off the first power switch T1 and the second power switch T2, the ac current flows through the internal resistance of the battery pack, the power P ═ I ^2R (I takes an ac effective value, and R is the internal resistance of the battery), and the internal resistance consumes power to raise the battery temperature.
The utility model discloses battery self-heating device, the break-make of first power switch pipe and second power switch pipe among the accessible control module control heating circuit to make first energy storage component, second energy storage component and group battery carry out the reciprocal charge-discharge each other of circulation through heating circuit, the alternating current who produces makes the internal resistance of group battery produce the heat, thereby reach the effect that the group battery self-heated. The utility model discloses used device quantity reduces, and need not external heating resistor, only leans on group battery self internal resistance to generate heat, makes electric core temperature rise, because utilize the internal resistance of group battery to produce thermal reason and make the battery heat up rapidly, can shorten battery intensification time under the low temperature environment greatly, makes the battery can resume the charging ability in short time.
In order to realize the embodiment, the utility model also provides a vehicle.
Fig. 9 is a schematic structural diagram of a vehicle according to an embodiment of the present invention. As shown in fig. 9, the vehicle 90 may include: the battery self-heating device 100. The structural and functional descriptions of the battery self-heating device 100 can be referred to the structural and functional descriptions of the battery self-heating device according to any embodiment of the present invention, which are not repeated herein. It should be noted that the vehicle may be a pure electric vehicle, and may also be a hybrid electric vehicle.
The utility model discloses vehicle, accessible battery are from the break-make of first power switch pipe and second power switch pipe in the control heating circuit among the heating device to make first energy storage component, second energy storage component and group battery carry out the reciprocal charge-discharge each other that circulates through heating circuit, the alternating current who produces makes the internal resistance of group battery production of heat, thereby reach the effect of group battery self-heating. The utility model discloses used device quantity reduces, and need not external heating resistor, only leans on group battery self internal resistance to generate heat, makes electric core temperature rise, because utilize the internal resistance of group battery to produce thermal reason and make the battery heat up rapidly, can shorten battery intensification time under the low temperature environment greatly, makes the battery can resume the charging ability in short time.
In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. A battery self-heating device, comprising:
the heating circuit comprises a first power switch tube, a first energy storage element and a second energy storage element which are connected with the first power switch tube, a second power switch tube which is connected with the first energy storage element, and diodes which are respectively connected with the first energy storage element and the first power switch tube, wherein the first power switch tube is connected with one end of a battery pack, and the second power switch tube and the second energy storage element are connected with the other end of the battery pack;
and the control module controls the on-off of the first power switch tube and the second power switch tube in the heating circuit so as to enable the first energy storage element, the second energy storage element and the battery pack to perform cyclic and reciprocating mutual charging and discharging through the heating circuit, and the generated alternating current enables the internal resistance of the battery pack to generate heat.
2. The battery self-heating device according to claim 1, wherein a first end of the first power switch tube is connected to one end of a battery pack, a second end of the first power switch tube is connected to the first end of the first energy storage element and the first end of the second energy storage element, respectively, a second end of the first energy storage element is connected to a first end of the second power switch tube, a second end of the second power switch tube is connected to the other end of the battery pack, a second end of the second energy storage element is connected to the other end of the battery pack, a first end of the diode is connected to a second end of the first energy storage element, and a second end of the diode is connected to the first end of the first power switch tube.
3. The battery self-heating device according to claim 1 or 2, wherein the first power switch tube, the second power switch tube, the first energy storage element and the second energy storage element form a charging circuit; the first energy storage element, the second energy storage element and the diode form an energy feedback circuit.
4. The battery self-heating apparatus according to claim 3,
when the control module controls the first power switch tube and the second power switch tube to be conducted, the battery pack charges the first energy storage element and the second energy storage element through the charging circuit;
when the control module controls the first power switch tube and the second power switch tube to be switched off, the first energy storage element and the second energy storage element feed back energy to the battery pack through the energy feedback circuit.
5. The battery self-heating apparatus according to claim 1, further comprising:
the temperature sensor is respectively connected with the battery pack and the control module, and is used for measuring the temperature of the battery pack and sending the measured temperature of the battery pack to the control module;
the control module controls the heating circuit to work according to the temperature of the battery pack measured by the temperature sensor.
6. The battery self-heating device according to claim 5, wherein the control module controls the first power switch tube and the second power switch tube to switch between an on state and an off state based on a target pulse width modulation control signal when the temperature of the battery pack measured by the temperature sensor is less than a first threshold value, and controls the heating circuit to stop working when the temperature of the battery pack measured by the temperature sensor is greater than a second threshold value; wherein the second threshold is greater than or equal to the first threshold.
7. The battery self-heating device according to claim 1, wherein the first power switch tube and the second power switch tube are IGBT tubes.
8. The battery self-heating apparatus of claim 1, wherein the first energy storage element is an inductor.
9. The battery self-heating apparatus of claim 1, wherein the second energy storage element is a capacitor.
10. A vehicle, characterized by comprising: a battery self-heating apparatus as claimed in any one of claims 1 to 9.
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| CN202020964785.5U CN212229493U (en) | 2020-05-29 | 2020-05-29 | Battery self-heating device and vehicle with same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113809765A (en) * | 2021-09-16 | 2021-12-17 | 远景能源有限公司 | Energy storage system and self-heating method |
| CN114374199A (en) * | 2022-01-24 | 2022-04-19 | 阳光电源股份有限公司 | Energy storage system |
| CN115832525A (en) * | 2021-09-28 | 2023-03-21 | 宁德时代新能源科技股份有限公司 | Heating system, heating method and device and electric equipment |
-
2020
- 2020-05-29 CN CN202020964785.5U patent/CN212229493U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113809765A (en) * | 2021-09-16 | 2021-12-17 | 远景能源有限公司 | Energy storage system and self-heating method |
| CN115832525A (en) * | 2021-09-28 | 2023-03-21 | 宁德时代新能源科技股份有限公司 | Heating system, heating method and device and electric equipment |
| US11876160B2 (en) | 2021-09-28 | 2024-01-16 | Contemporary Amperex Technology Co., Limited | Heating system, heating method and apparatus, and electric device |
| CN115832525B (en) * | 2021-09-28 | 2024-05-14 | 宁德时代新能源科技股份有限公司 | Heating system, heating method and device and electric equipment |
| CN114374199A (en) * | 2022-01-24 | 2022-04-19 | 阳光电源股份有限公司 | Energy storage system |
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